Metal terminal, composite member, and method for manufacturing the composite member

Abstract

The water resistance and airtightness of the area where the metal terminal is integrated into the resin by insert molding is improved. [Solution] The composite member 1 has a metal terminal 2 and a resin molded body 3 into which the metal terminal 2 is inserted. The metal terminal 2 has an exposed portion 8 exposed to the outside of the resin molded body 3, and an insert portion 7 covered by the resin molded body 3. The insert portion 7 has a plate-shaped first plate portion 23 extending linearly in the terminal longitudinal direction (X direction). The first plate portion 23 has a notch portion 4 at each of its side end portion in the Y1 direction and its side end portion in the Y2 direction. Furthermore, the insert portion 7 has a semi-through processed portion 5 extending from the inner peripheral edge of the notch portion 4 in the terminal width direction (Y direction).

Description

[Technical field]

[0001] The present invention relates to a metal terminal, a composite member, and a method for manufacturing the composite member. [Background technology]

[0002] Conventionally, composite members in which metal terminals are integrated into resin molded bodies by insert molding have been used. For example, in mechanisms of bicycles, cars, airplanes, ships, drones, and the like, in sensor modules such as strain sensors and pressure sensors, metal terminals for external connection are integrated into the resin case of the sensor module. Patent Document 1 describes this type of composite member. In Patent Document 1, a metal terminal (terminal) that penetrates the exterior case of a pressure sensor is integrated into the exterior case by insert molding.

[0003] In this type of composite member, depending on the usage conditions, the resin may float from the metal terminal, forming a gap between the metal terminal and the resin molded body. Therefore, a structure is required that can prevent the ingress or egress of liquids such as water, oil, lubricating fluid, and liquid fuel, gas, or dust from the point where the metal terminal penetrates the resin molded body.

[0004] For example, when a resin molded body constitutes a case, the case may be used in a state where the outside of the case is under negative pressure and the inside of the case is under positive pressure. Or, water pressure may be applied from the outside of the case during cleaning. In such a situation, the resin may deform due to the pressure applied to the resin, which may cause a gap to form between the resin and the metal terminal. However, there is a demand for a structure that can ensure water resistance and airtightness even in such a situation.

[0005] For example, the metal terminal is roughened by laser processing, roughening plating, potential difference dissolution, etc., or the surface of the metal terminal is coated with an adhesive coating. This results in a structure that enhances adhesion between the metal terminal and the resin. Alternatively, a sealant such as an adhesive or an O-ring is used to enhance the waterproofness, airtightness, and dustproofness of the portion where the metal terminal penetrates the resin molded body. For example, a sealant is attached to the boundary between the metal terminal and the resin molded body to enhance waterproofness and airtightness against positive pressure from inside the resin molded body. Patent Document 1 describes a structure that covers the portion where the metal terminal protrudes from the exterior case with an epoxy adhesive, silicone rubber, etc. to block the intrusion path of moisture and gas. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2008-111859 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, when a structure is adopted in which the surface of a metal terminal is roughened or an adhesive coating is applied to enhance adhesion with a resin, an additional roughening step or adhesive coating step is required in addition to the manufacturing step of the metal terminal by pressing. This increases the number of steps and the number of processing facilities, which increases the cost of the metal terminal.

[0008] Furthermore, when sealing the gap between the metal terminal and the resin with a sealant or seal rubber to improve the airtightness, an additional sealant attachment process is required. Also, an additional shape may be required to properly position the sealant on the resin molding. For example, in Patent Document 1, a groove is provided at the boundary where the metal terminal protrudes from the resin molding to allow for the insertion of an epoxy adhesive or silicone rubber. This makes the process more complicated and the structure more complicated. This has become more complex, hindering efforts to reduce the size and weight of the device.

[0009] In view of the above problems, the object of the present invention is to improve the water resistance and airtightness of the area where the metal terminal is inserted into the resin, without performing additional processing steps on the metal terminal or installing a sealing material to fill the gap between the metal terminal and the resin. [Means for solving the problem]

[0010] In order to solve the above problems, one aspect of the metal terminal of the present invention is a metal terminal that is inserted into a resin molded body, and comprises an exposed portion exposed to the outside of the resin molded body, and a plate-shaped insert portion that is covered by the resin molded body, and the insert portion is provided with a notch portion cut into a side end portion of the insert portion in the terminal width direction, or a protruding portion protruding from the side end portion, and is characterized in that a semi-through processed portion is provided extending in the terminal width direction from the tip of the protruding portion or the inner edge of the notch portion.

[0011] According to the present invention, in addition to forming a notch or a protrusion at the side end of the insert part to be joined to the resin, a semi-interposed processed part is formed extending in the terminal width direction from the location where the notch or the protrusion is provided. As a result, an anchor effect is obtained at the side end of the metal terminal by the notch or the protrusion. In addition, the resin that has entered the semi-interposed processed part and hardened is connected to the resin joined to the side end, suppressing deformation of the resin at the side end. Therefore, since it is possible to suppress the resin floating at the side end of the metal terminal, it is possible to improve the water resistance and airtightness of the part where the metal terminal is inserted into the resin.

[0012] According to the present invention, the notch or protrusion and the semi-through processed portion can be formed by flat pressing of the metal plate in the same direction. Therefore, when manufacturing the metal terminal, there is no need to perform a processing step other than pressing. Furthermore, there is no need to use a sealant and perform a process of installing it in order to improve water resistance and airtightness, and there is no need to provide an additional shape for installing the sealant in the metal terminal. Therefore, it is possible to suppress the complication of the manufacturing process of the metal terminal and the increase in parts costs in order to improve water resistance and airtightness.

[0013] In the present invention, it is preferable that the protrusion or the notch is provided at one side end of the insert part in the terminal width direction and at the other side end of the terminal width direction, and the semi-through processing part extends from the notch or the protrusion provided at the one side end to the notch or the protrusion provided at the other side end. In this way, it is possible to suppress the resin floating at both ends of the metal terminal in the width direction.

[0014] In the present invention, the insert portion is preferably provided with the notch portion, and the notch portion is preferably in an undercut shape, thereby enhancing the anchor effect of the resin that has entered the notch portion and hardened.

[0015] In the present invention, the side end portion is provided with two notches and a wall portion extending in the terminal width direction between the two notches, and each of the two notches includes a first groove extending in the terminal width direction from an opening portion opening in the side end portion and a second groove extending from the first groove in the terminal longitudinal direction perpendicular to the terminal width direction, and it is preferable that the second groove in one of the two notches and the second groove in the other of the two notches both extend from the first groove in a direction opposite to the wall portion. In such a shape, the two anchor portions try to deform in opposite directions when pulled out of the notches. Therefore, the two anchor portions hinder each other's deformation, making it difficult to come off the notches. Therefore, the effect of suppressing resin floating at the side end portion of the metal terminal is enhanced. In addition, when the anchor portion tries to come off the notches, the second groove between the two notches extends in a direction opposite to the direction of the wall portion. The anchor portion is kept in close contact with the wall portion, thereby improving the water resistance and airtightness of the portion where the metal terminal is inserted into the resin.

[0016] In the present invention, it is preferable that the corner where the inner peripheral surface of the notch and the side end are connected is rounded. In this way, the opening of the notch is widened, so that the resin can easily enter the notch. Therefore, it is possible to suppress a decrease in adhesion between the metal terminal and the resin due to insufficient filling of the resin into the notch.

[0017] In the present invention, the corners of the concave shape on the inner peripheral surface of the cutout are preferably rounded. In this way, the corners of the resin that has entered the cutout and hardened are rounded, making it less likely to crack during cold shrinkage under thermal cycles.

[0018] In the present invention, the insert portion is provided with the protruding portion, and the protruding portion may have a wide portion having the same plate thickness as the insert portion and a width greater than that of the base portion connected to the side end portion. With this configuration, the anchor effect of the protruding portion can be enhanced.

[0019] In the present invention, it is preferable that a thin-walled portion is provided at the tip of the protrusion, the thin-walled portion being thinner than the plate thickness of the insert portion. In this way, the three-dimensional shape of the protrusion becomes complex. Therefore, the anchor effect can be enhanced, and the resin floating at the side end portion of the metal terminal can be suppressed. In addition, since the thin-walled portion can be formed by flat pressing in the same direction as the pressing process for providing the protrusion and the semi-through processing portion, the complexity of the manufacturing process of the metal terminal and the increase in parts costs can be suppressed.

[0020] In the present invention, the insert part has a peeling prevention part formed on the surface in the plate thickness direction, the peeling prevention part preferably has a lattice-shaped groove and a convex part surrounded by the groove, the groove is inclined with respect to the terminal width direction and is inclined with respect to the terminal longitudinal direction perpendicular to the terminal width direction, and the convex part preferably has a crushed part with a crushed tip. In this way, the lattice-shaped groove has an undercut shape, and the resin that has entered the groove forms an anchor part. Therefore, it is possible to suppress the resin floating on the surface of the insert part in the plate thickness direction. In addition, since the effect of suppressing the deformation of the resin is enhanced, it is possible to enhance the effect of suppressing the resin floating on the side surface of the terminal.

[0021] In the present invention, it is preferable that the groove has an inclination angle with respect to the terminal longitudinal direction smaller than the inclination angle with respect to the terminal width direction, and the planar shape of the protrusion is a rhombus with a diagonal dimension in the terminal longitudinal direction larger than the diagonal dimension in the terminal width direction. In this way, when the resin flow direction around the metal terminal is made to coincide with the terminal longitudinal direction during insert molding, the angle between the resin flow direction and the groove on the terminal surface can be reduced. This makes it possible to reduce the resistance when the molten resin material flows into the groove and the resistance when the molten resin material flows along the groove. Therefore, it is possible to suppress insufficient filling of the resin into the groove and to enhance the anchor effect.

[0022] One aspect of the composite member according to the present invention is characterized by comprising the above-mentioned metal terminal and a resin molded body into which the metal terminal is inserted.

[0023] By using the above-mentioned metal terminal, it is possible to prevent the resin from floating from the metal terminal, and therefore it is possible to improve the water resistance and airtightness of the portion where the metal terminal penetrates the resin molded body.

[0024] In the composite member of the present invention, the resin molding is preferably a nylon resin based on metaxylenediamine, to which a fibrous filler is added. The metaxylenediamine-based resin has low viscosity and high fluidity. Therefore, when the metal terminal has unevenness, the resin molding is preferably made of a nylon resin based on metaxylenediamine, to which a fibrous filler is added. Filling defects are unlikely to occur in the areas where the shape is provided. In particular, filling defects are unlikely to occur in the undercut shape. Therefore, it is possible to suppress a reduction in the anchor effect due to filling defects in the undercut shape. Furthermore, filling defects are unlikely to occur even when a fibrous filler such as glass fiber is added. The addition of the filler enhances the effect of suppressing deformation of the resin. Therefore, it is possible to enhance the effect of suppressing floating of the resin from the metal terminal.

[0025] Another aspect of the composite member of the present invention comprises the above-mentioned metal terminal and a resin molded body into which a plurality of the metal terminals are inserted, wherein the plurality of metal terminals are aligned in the terminal width direction, and the positions of the protrusions of adjacent metal terminals are offset in the terminal longitudinal direction perpendicular to the terminal width direction.

[0026] In this way, even if it is not possible to ensure a large space between adjacent metal terminals, it is possible to prevent the protruding portions of adjacent metal terminals from coming into contact with each other and causing a short circuit.

[0027] One aspect of the method for manufacturing a composite member according to the present invention is a method for manufacturing a composite member having the above-mentioned metal terminal and a resin molded body into which the metal terminal is inserted, characterized in that the gate position of the mold is set so that the direction of resin flow when filling molten resin material into a mold in which the metal terminal is arranged coincides with the longitudinal direction of the terminal, at least on the surface of the peel prevention portion.

[0028] According to the present invention, when a metal terminal is integrated into a resin molded body by insert molding, a groove having a small inclination angle with respect to the longitudinal direction of the terminal is provided in the peeling prevention part provided on the surface of the terminal, and when the molten resin material is filled into the mold, the resin flow direction on the surface of the peeling prevention part is made to coincide with the longitudinal direction of the terminal. In this way, it is possible to reduce the resistance when the molten resin material flows into the groove during insert molding, and the resistance when the molten resin material flows along the groove. Therefore, it is possible to suppress insufficient filling of the resin into the groove and to enhance the anchor effect. Effect of the Invention

[0029] According to the present invention, it is possible to improve the water resistance and airtightness of the portion where the metal terminal is integrated with the resin by insert molding. Also, it is possible to suppress the complication of the manufacturing process of the metal terminal and the increase in the parts cost for improving the water resistance and airtightness. [Brief description of the drawings]

[0030] [Figure 1] 1A and 1B are a plan view and a cross-sectional view of a composite member, and a partially enlarged view of a portion where a metal terminal is inserted. [Diagram 2] 2A and 2B are a plan view and a side view of a metal terminal according to a first embodiment, and a partially enlarged view of a cutout portion. [Diagram 3] FIG. [Figure 4] FIG. 13 is an explanatory diagram showing deformation of resin due to positive pressure. [Diagram 5] 1A and 1B are a plan view and a side view of a metal terminal having a notch portion of Modification 1, and a partially enlarged view of the notch portion. [Figure 6] 11A and 11B are a plan view and a side view of a metal terminal having a notch portion of Modification 2, and a partially enlarged view of the notch portion. [Figure 7] 11A and 11B are a plan view and a side view of a metal terminal according to a second embodiment, and a partially enlarged view of a protruding portion. [Figure 8] 13 is an explanatory diagram of a metal terminal in which the position of a protrusion is shifted. FIG. [Figure 9] 11A to 11C are a plan view, a side view, and a perspective view of a metal terminal having a protrusion of a modified example, and a partially enlarged view of the protrusion. [Figure 10] 1A and 1B are explanatory diagrams of a metal terminal and a composite member each having a peeling prevention portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] Hereinafter, embodiments of a metal terminal, a composite member, and a manufacturing method for a composite member will be described with reference to the drawings. In this specification, the X direction, the Y direction, and the Z direction are mutually perpendicular directions. One side of the X direction is designated as X1, and the other side of the X direction is designated as X2. One side of the Y direction is designated as Y1, and the other side of the Y direction is designated as Y2. One side of the Z direction is designated as Z1, and the other side of the Z direction is designated as Z2.

[0032] (Composite materials) 1 shows a plan view and a cross-sectional view of a composite member 1, and a partially enlarged view of a portion where a metal terminal 2 is inserted. The composite member 1 includes the metal terminal 2 and a resin molded body 3. The metal terminal 2 is integrated with the resin molded body 3 by insert molding. The composite member 1 is used, for example, as a case for a sensor unit such as a strain sensor or pressure sensor. Note that the use of the composite member 1 is not limited to a member constituting a strain sensor or pressure sensor.

[0033] 1, the resin molded body 3 has a bottom 31 along the XY plane and an edge 32 rising in the Z2 direction from the outer periphery of the bottom 31. The bottom 31 and the edge 32 form a partition that separates the internal space S1 of the sensor unit from the external space S2.

[0034] The composite material 1 may be used in a situation where the internal space S1 is under positive pressure. Alternatively, the composite material 1 may be used in a situation where water pressure is applied to the composite material 1 from the external space S2 side. For example, water pressure is applied to the composite material 1 from the external space S2 side during cleaning. The composite material 1 is structured such that water resistance and airtightness can be ensured at the portion where the metal terminal 2 penetrates the resin molded body 3 even under such a situation.

[0035] 1 includes a plurality of metal terminals 2. Each of the plurality of metal terminals 2 extends in the X direction and penetrates the resin molded body 3. The number of metal terminals 2 inserted into the resin molded body 3 may be one, or if there are multiple metal terminals, the number is not limited to four.

[0036] As shown in the partially enlarged view of FIG. 1, the metal terminal 2 includes an insert portion 7 covered by the resin molded body 3, and two exposed portions 8 exposed to the outside of the resin molded body 3. One exposed portion 8 is provided at the end of the metal terminal 2 in the X1 direction and faces the internal space S1 of the sensor unit surrounded by the bottom portion 31 and the edge portion 32. The other exposed portion 8 is provided at the end of the metal terminal 2 in the X2 direction and faces the external space S2 of the sensor unit. The positions and ranges of the exposed portions 8 are not limited to those shown in FIG. 1.

[0037] (metal terminal) 2 is a plan view and a side view of the metal terminal 2 of the first embodiment, and a partially enlarged view of the notch portion 4. The metal terminal 2 is a metal member manufactured by press working. As shown in the side view of FIG. 2, the schematic shape of the metal terminal 2 is a shape in which the end of the X2 direction of a metal plate with a constant thickness that is long in the X direction is bent into a rectangular concave shape that is concave in the Z2 direction. The metal terminal 2 includes a plate-shaped terminal portion 21 that extends linearly in the X direction, and a serration portion 22 that is connected to the end of the terminal portion 21 in the X2 direction. The hatched area in the plan view of FIG. 2 is the range of the serration portion 22.

[0038] In this specification, the direction in which terminal portion 21 extends is referred to as the "terminal longitudinal direction." The terminal longitudinal direction is the X direction. The width direction of terminal portion 21 and serration portion 22 is referred to as the "terminal width direction." The terminal width direction is the Y direction. In this specification, the "terminal planar portion" refers to the surface in the plate thickness direction of the metal plate that constitutes serration portion 22, and the "terminal side portion" refers to the end face in the terminal width direction of the metal plate that constitutes serration portion 22.

[0039] As shown in the plan view of FIG. 2, the terminal portion 21 has a constant width in the Y direction. The serration portion 22 has a constant width in the Y direction except for a portion where a notch portion 4 described later is formed. The serration portion 22 includes a first plate portion 23 extending from the terminal portion 21 in the X2 direction, a second plate portion 24 bent in the Z2 direction from an end portion of the first plate portion 23 in the X2 direction, a third plate portion 25 bent from an end portion of the second plate portion 24 in the Z2 direction to the opposite side (X2 direction) from the first plate portion 23, and a fourth plate portion 26 bent in the Z1 direction from an end portion of the third plate portion 25 in the X2 direction. The fourth plate portion 26 has an exposed portion 8 whose surface in the X2 direction is exposed to the external space S2 shown in FIG. 1.

[0040] 1, the surface of the terminal portion 21 in the Z1 direction has an exposed portion 8 that is exposed to the internal space S1 when the metal terminal 2 is inserted into the resin molded body 3. As shown in the plan view of FIG. 2, two circular through holes 27 are provided at the center of the terminal width direction (Y direction) of the terminal portion 21, spaced apart in the X direction. The two through holes 27 are arranged in the exposed portion 8.

[0041] 1, the first plate portion 23, the second plate portion 24, and the third plate portion 25 of the serration portion 22 are insert portions 7 embedded inside the resin molded body 3. The insert portions 7 are provided with a shape for suppressing resin lifting from the surface of the metal terminal 2 in order to enhance the water resistance and airtightness of the composite member 1. In this embodiment, the insert portions 7 are provided with three types of shapes for suppressing resin lifting: a notched portion 4 formed by cutting out a side end portion in the terminal width direction, a half-through processed portion 5 extending in the terminal width direction, and a peeling prevention portion 6 provided on the surface in the plate thickness direction.

[0042] (Notch) As shown in the plan view of FIG. 2, the serration portion 22 has two notches 4 arranged side by side in the X direction at each of a first side end 28, which is a side end in the Y1 direction, and a second side end 29, which is a side end in the Y2 direction. The notch 4 has an undercut shape in which the width of the inner part is wider than the width of an opening 40 that opens at the first side end 28 or the second side end 29. Specifically, the notch 4 is L-shaped. As shown in the partial enlarged view of FIG. 2, the notch 4 has a first groove 41 that extends in the Y direction from the opening 40 toward the center of the serration portion 22 in the Y direction, and a second groove 42 that extends in the X direction from the first groove 41.

[0043] 2, in the cutout portion 4 opening at the first side end 28, the corners on both sides of the opening 40, in other words, the corners 43 where the first side end 28 and the inner peripheral surface of the cutout portion 4 are all rounded. Similarly, in the cutout portion 4 opening at the second side end 29, the corners on both sides of the opening 40, in other words, the corners 43 where the second side end 29 and the inner peripheral surface of the cutout portion 4 are all rounded. Moreover, in each cutout portion 4, among the corners on the inner peripheral surface of the cutout portion 4, all of the concave corners 44 are rounded.

[0044] In the following description, of the two notches 4 arranged in the X direction at each of the first side end 28 and the second side end 29, the notch 4 in the X1 direction is referred to as the first notch 45, and the notch 4 in the X2 direction is referred to as the second notch 46. Between the first notch 45 and the second notch 46, a wall 47 is formed that extends linearly in the Y direction between the two first grooves 41. The first notch 45 and the second notch 46 are symmetrical with respect to a symmetry axis L that extends in the Y direction at the center of the wall 47 in the X direction. The second groove 42 of the first notch 45 and the second groove 42 of the second notch 46 both extend from the first groove 41 toward the opposite side to the wall 47.

[0045] (half-through processing section) As shown in FIG. 2, the serration portion 22 is provided with a linear semi-intersecting processed portion 5 extending in the terminal width direction (Y direction). The semi-intersecting processed portion 5 includes a groove portion 51 formed on the surface in the plate thickness direction, and a rib 52 protruding from the surface opposite to the surface on which the groove portion 51 is formed. In the metal terminal 2 shown in FIG. 2, the semi-intersecting processed portion 5 includes a groove portion 51 recessed in the Z1 direction, and a rib 52 protruding in the Z1 direction. The semi-intersecting processed portion 5 is formed by flat pressing on a metal plate. The through-processed portion 5 may have a shape pressed in the opposite direction in the Z direction. That is, the semi-through-processed portion 5 may have a shape including a groove recessed in the Z2 direction and a rib protruding in the Z2 direction.

[0046] The semi-through processed portion 5 is formed at one location each on the first plate portion 23 and the third plate portion 25. On the first plate portion 23, the semi-through processed portion 5 is formed at the center of the first cutout portion 45 in the X direction. The semi-through processed portion 5 formed on the first plate portion 23 extends from the inner peripheral surface of the first cutout portion 45 provided on the first side end portion 28 to the inner peripheral surface of the first cutout portion 45 provided on the second side end portion 29. The position where the semi-through processed portion 5 is formed may be the position of the second cutout portion 46. Also, the semi-through processed portion 5 may be formed on both the first cutout portion 45 and the second cutout portion 46. The semi-through processed portion 5 provided on the third plate portion 25 may be omitted.

[0047] When the semi-through processed portion 5 is formed at the position of the cutout portion 4, a complex three-dimensional shape is formed. When this portion is inserted into the resin, the anchor portion made of the resin that has entered the cutout portion 4 and hardened is connected to the resin that has entered the groove portion 51 of the semi-through processed portion 5 and hardened. This inhibits the anchor portion placed in the cutout portion 4 from deforming, and prevents the anchor portion from coming off the cutout portion 4.

[0048] (peeling prevention part) FIG. 3 is an explanatory diagram of the peeling prevention portion 6. The hatched area in the upper left diagram of FIG. 3 is the range where the peeling prevention portion 6 is provided. The upper right diagram of FIG. 3 is a partially enlarged plan view of the peeling prevention portion 6. The lower diagram of FIG. 3 is a partially enlarged perspective view of the peeling prevention portion 6. The peeling prevention portion 6 is formed on the surface in the plate thickness direction of the serration portion 22. In this embodiment, the peeling prevention portion 6 is formed on the surface in the Z1 direction shown in FIG. 2. Note that the peeling prevention portion 6 may be formed on the surface in the Z2 direction shown in FIG. 2. The range in which the peeling prevention portion 6 is formed may be narrower than the hatched range shown in the upper left diagram of FIG. 3. For example, it is sufficient that the peeling prevention portion 6 is formed at least on the surface of the first plate portion 23.

[0049] A plurality of grooves 61 are formed in a lattice pattern in the peeling prevention section 6. The portions between adjacent grooves 61 form rectangular convex portions 62 in plan view. As can be seen from the lower diagram in Fig. 3, the tips of the convex portions 62 are provided with crushed portions 63 that are crushed by flat pressing. For this reason, the cross-sectional shape of the grooves 61 in the peeling prevention section 6 is an undercut shape in which the width of the bottom is wider than the width of the opening.

[0050] 3, the groove 61 is inclined with respect to the X direction and is inclined with respect to the Y direction. The inclination angle R1 of the groove 61 with respect to the X direction is smaller than the inclination angle R2 with respect to the Y direction. Therefore, the planar shape of the protrusion 62 is a rhombus with a diagonal dimension W1 in the X direction longer than a diagonal dimension W2 in the Y direction.

[0051] Specific dimensions of the peeling prevention portion 6 are preferably, for example, as follows: The width W3 of the groove 61 shown in the upper right diagram of Fig. 3 is 0.1 mm, and the interval W4 between adjacent grooves 61 is 0.1 mm. The inclination angle R1 of the groove 61 with respect to the X direction is 40° or less. The depth D of the groove 61 shown in the lower diagram of Fig. 3 is 0.1 mm or more.

[0052] (Deformation of resin) FIG. 4 is an explanatory diagram showing the deformation of resin due to positive pressure. The upper diagram in FIG. 4 shows the state of the resin before internal pressure is applied to the composite material 1. The lower diagram in FIG. 4 shows the state of the resin when internal pressure is applied to the composite material 1. When the internal space S1 of the composite material 1 in FIG. 1 becomes positive pressure, internal pressure is applied. This causes deformation of the resin covering the serration portion 22. Specifically, as shown by the arrows T in the lower diagram in FIG. 4, deformation occurs that causes the resin to peel off from the side surfaces of the serration portion 22 in the Y1 and Y2 directions.

[0053] When the composite member 1 is manufactured by insert molding, at the side ends in the Y1 and Y2 directions of the serration portion 22, resin fills the two notches 4 and hardens to form anchor portions. As shown in Fig. 4, the resin molded body 3 includes, as anchor portions, a first anchor portion 11 that engages with the first notch portion 45 and a second anchor portion 12 that engages with the second notch portion 46.

[0054] When deformation occurs that causes resin to peel off from the side surfaces of the serration portion 22 in the Y1 and Y2 directions due to internal pressure or the like applied to the composite member 1, the first anchor portion 11 deforms into a shape that allows it to come out of the first notch portion 45, and the second anchor portion 12 deforms into a shape that allows it to come out of the second notch portion 46. At this time, the first anchor portion 11 and the second anchor portion 12 have shapes that are opposite to each other in the X direction, so they try to deform in opposite directions in the X direction. Specifically, the first anchor portion 11 deforms in the direction indicated by the arrow T1 in FIG. 4, and the second anchor portion 12 deforms in the direction indicated by the arrow T2 in FIG. 4. Therefore, the first anchor portion 11 and the second anchor portion 12 hinder each other's deformation, and are therefore unlikely to come out of the first notch portion 45 and the second notch portion 46.

[0055] As shown in the partially enlarged view of FIG. 4, the first anchor portion 11 and the second anchor portion 12 each include a base portion 13 made of a resin filled in the first groove 41 and a tip portion 14 made of a resin filled in the second groove 42. The tip portion 14 bends and extends from the tip of the base portion 13. When these two anchor portions are pulled out from the cutout portion 4, the base portion 13 is pulled out from the first groove 41, and the tip portion 14 is pulled out from the second groove 42. At this time, the contact state between the base portion 13 and the inner surface of the first groove 41 is maintained. Furthermore, when the tip portion 14 is pulled out from the second groove 42, the first anchor portion 11 and the second anchor portion 12 are each pressed against the wall portion 47 from both sides in the X direction, and a state of close contact with the wall portion 47 is maintained.

[0056] (Resin flow direction during insert molding) When manufacturing the composite material 1 by insert molding, a plurality of metal terminals 2 are set in a mold. At this time, the serration portion 22 of each metal terminal 2 is placed in the space to be filled with resin, and the exposed portion 8 of each metal terminal 2 is abutted against the mold surface. Then, molten resin material is filled from the gate of the mold. After filling is completed, the molten resin material is cured under predetermined curing conditions. After curing, the composite material 1 is released from the mold. In this embodiment, the resin constituting the resin molded body 3 is a resin in which a fibrous filler such as glass fiber is added to a nylon resin based on metaxylenediamine.

[0057] The arrow F shown in FIG. 3 indicates the resin flow direction during insert molding. As shown in FIG. 3, during insert molding, the gate position of the mold is set so that the resin flow direction F around the serration portion 22 coincides with the terminal longitudinal direction (X direction). As a result, in the peeling prevention portion 6 provided in the first plate portion 23, the angle R1 between the resin flow direction F and the groove 61 is smaller than the angle R2 between the groove 61 and a direction perpendicular to the resin flow direction F. The angle R1 between the resin flow direction F and the groove 61 is the angle between the resin flow direction F and the side of the protrusion 62. Therefore, if the resin flow direction F is configured as described above, the angle between the side of the protrusion 62, which generates resistance, and the resin flow direction F when the resin flows into the groove 61 can be reduced.

[0058] In the peel prevention portion 6, the groove 61 has an undercut shape due to the tip of the protrusion 62 being crushed. When the groove 61 has an undercut shape, the opening of the groove 61 is narrow. For this reason, when a fibrous filler such as glass fiber is added to the molten resin material, the molten resin material does not easily flow into the groove 61 from the direction of the arrow G shown in the lower diagram of FIG. 3. Therefore, in this embodiment, the resin flow direction F is made to coincide with the terminal longitudinal direction, and the angle R1 between the groove 61 and the resin flow direction F, in other words, the angle between the side of the protrusion 62 that generates resistance when the resin flows in and the resin flow direction F, is adjusted. A configuration in which the angle R1 is small is adopted. This allows even a molten resin material containing glass fibers to easily flow into the grooves 61 and along the grooves 61. Therefore, insufficient filling of the molten resin material into the grooves 61 is unlikely to occur.

[0059] In the resin molded body 3, the orientation of fillers such as glass fibers is aligned as a result of the molten resin material flowing along the side surfaces of the protrusions 62. As a result, the anchor portions made of resin that have entered the grooves 61 are less likely to deform, so that even if pressure that would deform the resin molded body 3 is applied, the anchor portions are less likely to come out of the grooves 61. Therefore, the resin covering the peel prevention portions 6 is less likely to peel off and is less likely to deform. In this way, if the resin covering the peel prevention portions 6 of the serration portions 22 is less likely to peel off, deformation of the resin covering the side ends of the serration portions 22 is further suppressed. This suppresses deterioration in water resistance and airtightness.

[0060] (Air leak test) An air leak test was conducted on a prototype of the composite material 1 shown in Figure 1 to check the water resistance and airtightness of the part where the metal terminal 2 was inserted. The result was that there was no air leak for one minute when the inside and outside pressure difference was 1 atmosphere.

[0061] (Action and effect) As described above, the composite member 1 of this embodiment has the metal terminal 2 and the resin molded body 3 into which the metal terminal 2 is inserted. The metal terminal 2 has an exposed portion 8 exposed to the outside of the resin molded body 3, and an insert portion 7 covered by the resin molded body 3. The insert portion 7 has a plate-shaped first plate portion 23 extending linearly in the terminal longitudinal direction (X direction). The first plate portion 23 has a notch portion 4 at each of its side end portion in the Y1 direction and its side end portion in the Y2 direction. Furthermore, the insert portion 7 has a semi-through processed portion 5 extending from the inner peripheral edge of the notch portion 4 in the terminal width direction (Y direction).

[0062] In the metal terminal 2 of this embodiment, a notch 4 is formed at the side end of the insert portion 7 to be joined to the resin, and an anchor portion is formed by the resin that has entered the notch 4. Therefore, an anchor effect is obtained. Since the notch 4 has an undercut shape, the anchor effect is high. In addition, the resin that has entered the half-through processing portion 5 and hardened is connected to the resin that is joined to the side end of the metal terminal 2, suppressing deformation of the resin at the side end. Therefore, it is possible to suppress resin floating at the side end of the metal terminal 2. Furthermore, the resin that has entered the groove portion 51 of the half-through processing portion 5 and hardened can maintain a contact state with the inner surface of the groove portion 51 even if resin floating occurs in the terminal width direction (Y direction). Therefore, it is possible to improve the water resistance and airtightness of the portion where the metal terminal 2 is inserted into the resin.

[0063] In the metal terminal 2 of this embodiment, the notch portion 4 and the semi-through processed portion 5 for suppressing the floating of the resin can be formed by flat pressing of the metal plate in the same direction. Therefore, when manufacturing the metal terminal 2, it is not necessary to perform a processing step other than the press processing. Also, in order to increase the water resistance and airtightness of the composite member 1 in which the metal terminal 2 is inserted into the resin molded body 3, it is not necessary to perform a sealing material and its installation process, and it is not necessary to provide an additional shape for installing the sealing material to the metal terminal 2. Therefore, it is possible to suppress the complication of the manufacturing process of the metal terminal 2 and the increase in parts costs for increasing the water resistance and airtightness of the composite member 1.

[0064] In this embodiment, the semi-through processed portion 5 extends from the notch portion 4 provided in the first side end portion 28 to the notch portion 4 provided in the second side end portion 29. Therefore, deformation of the resin can be suppressed at both ends in the width direction of the metal terminal 2, and resin floating can be suppressed. Therefore, the water resistance and airtightness of the portion where the metal terminal 2 is inserted into the resin can be improved. Note that the notch portion 4 may not be provided in one of the first side end portion 28 and the second side end portion 29.

[0065] In this embodiment, the first side end 28 and the second side end 29 are provided with a first notch 45 and a second notch 46 as the notch 4. Between the first notch 45 and the second notch 46, a wall 47 extending in the terminal width direction (Y direction) is provided. The first notch 45 and the second notch 46 are in an inverted L-shape. That is, the first notch 45 and the second notch 46 are provided with a first groove 41 extending in the Y direction from an opening 40 opening at the side end of the metal terminal 2, and a second groove 42 extending in the X direction from the first groove 41. The second groove 42 extends from the first groove 41 in the opposite direction to the wall 47. In this way, when the anchor portions at two locations are bent in opposite directions, they try to deform in opposite directions when pulled out of the notch 4, and thus hinder each other from deforming. Therefore, the anchor portions are less likely to come off the cutout portions 4, which is highly effective in suppressing resin floating. Furthermore, the two anchor portions can maintain contact with the inner surface of the first groove 41 when pulled out of the cutout portions 4. This can improve the water resistance and airtightness of the portion where the metal terminal 2 is inserted into the resin.

[0066] In this embodiment, since corner 43 at the entrance of cutout 4 is rounded, resin easily enters cutout 4. This makes it possible to prevent insufficient filling of resin into cutout 4. Also, concave corner 44 on the inner peripheral surface of cutout 4 is rounded. As a result, the corners of the resin that has entered cutout 4 and hardened are rounded, so there is little risk of cracks occurring in the corners of the resin during cold shrinkage under thermal cycles, reducing the anchor effect.

[0067] It is preferable that corner 43 at the entrance of cutout portion 4 and concave corner 44 on the inner circumferential surface of cutout portion 4 be rounded, but they do not have to be rounded.

[0068] In this embodiment, the peeling prevention part 6 is formed on the surface of the insert part 7 in the plate thickness direction. The peeling prevention part 6 includes a lattice-shaped groove 61 and a convex part 62 surrounded by the groove 61. The groove 61 is inclined with respect to the terminal longitudinal direction (X direction) and is also inclined with respect to the terminal width direction (Y direction). The convex part 62 includes a crushed part 63 with a crushed tip. Such a shape of the groove 61 and the convex part 62 can be formed by flat pressing in the same direction as when forming the notch part 4 and the half-through processing part 5. Therefore, the peeling prevention part 6 including the undercut groove 61 can be formed without performing a processing step different from the press processing. The resin that has entered the undercut groove 61 forms an anchor part. Therefore, it is possible to suppress the resin floating on the surface of the serration part 22 in the plate thickness direction. In addition, since the effect of suppressing the deformation of the resin is enhanced, it is possible to enhance the effect of suppressing the resin floating on the side surface of the terminal.

[0069] In the manufacturing method of the composite member 1 according to this embodiment, the gate position of the mold is set so that the resin flow direction F when the molten resin material is filled into the mold in which the metal terminal 2 is arranged coincides with the terminal longitudinal direction (X direction) at least on the surface of the peeling prevention part 6. The molten resin material filled into the mold from the gate is a metaxylenediamine-based nylon resin with added fibrous filler.

[0070] In the metal terminal 2 of this embodiment, the groove 61 provided in the peel prevention part 6 has an inclination angle R1 with respect to the terminal longitudinal direction (X direction) that is smaller than an inclination angle R2 with respect to the terminal width direction (Y direction). The planar shape of the protrusion 62 is a rhombus with a diagonal dimension W1 in the terminal longitudinal direction (X direction) that is larger than a diagonal dimension W2 in the terminal width direction (Y direction). This shape can reduce the resistance when the molten resin material flows into the groove 61 and the resistance when the molten resin material flows along the groove 61 by setting the resin flow direction F to the same direction as the terminal longitudinal direction (X direction). This makes it difficult for the resin to be insufficiently filled into the groove 61, thereby increasing the bonding strength between the peel prevention part 6 and the resin.

[0071] In this embodiment, since a nylon resin based on metaxylenediamine is used as the molten resin material, the molten resin material has a low viscosity and a high fluidity. If this is done, even if a filler is added, insufficient filling of the undercut groove 61 is unlikely to occur. This makes it possible to increase the bonding strength between the peel prevention portion 6 and the resin, and to enhance the effect of suppressing the resin from floating away from the metal terminal 2. This makes it possible to increase the water resistance and airtightness of the portion where the metal terminal 2 penetrates the resin.

[0072] (Modification of cutout portion) The cutout portion of the metal terminal is not limited to an L-shape as shown in FIG. 2. For example, it may be a T-shape or another undercut shape. Alternatively, it does not have to be an undercut shape. The number of cutout portions is not limited to two. In the following description, the same components as those of the metal terminal 2 of the above embodiment are denoted by the same reference numerals, and different components are denoted by different reference numerals.

[0073] 5 is a plan view and a side view of a metal terminal 2A having a cutout portion 4A of the first modification, and a partially enlarged view of the cutout portion 4A. The metal terminal 2A has a terminal portion 21 and a serration portion 22A. The first side end portion 28 and the second side end portion 29 of the serration portion 22A each have two cutout portions 4A aligned in the X direction. In addition, the serration portion 22A is formed with a half-through processed portion 5 and a peeling prevention portion 6. The half-through processed portion 5 is provided at the position of one of the two cutout portions 4B.

[0074] As shown in the partially enlarged view of Fig. 5, the cutout portion 4A includes a first groove 41 extending in the Y direction and a second groove 42A extending from the first groove 41 to both sides in the X direction. A wall portion 47A is provided between the two cutout portions 4A. The width of the portion of the wall portion 47A between the second grooves 42 is narrower than the width of the portion between the first grooves 41. The length of the portion of the second groove 42A extending toward the wall portion 47A is shorter than the length of the portion extending toward the opposite side to the wall portion 47A.

[0075] FIG. 6 is a plan view and a side view of a metal terminal 2B having a notch portion 4B of the second modification, and a partially enlarged view of the notch portion 4B. The metal terminal 2B has a terminal portion 21 and a serration portion 22B. The first side end portion 28 and the second side end portion 29 of the serration portion 22B each have one notch portion 4B. In addition, the serration portion 22B has a half-through processing portion 5 and a peeling prevention portion 6. The half-through processing portion 5 extends from the notch portion 4B of the first side end portion 28 to the notch portion 4B of the second side end portion 29. As shown in FIG. 6, the notch portion 4B has a first groove 41 extending in the Y direction and a second groove 42B extending from the first groove 41 to both sides in the X direction with the same length. Therefore, the notch portion 4B is T-shaped.

[0076] In the composite material 1 shown in FIG. 1, when the metal terminal 2A of FIG. 5 was used instead of the metal terminal 2, and when the metal terminal 2B of FIG. 6 was used, in either case, no air leaks were observed for one minute with an inside / outside pressure difference of 1 atmosphere in the air leak test.

[0077] (Embodiment 2) The shape for suppressing the resin floating at the side end of the metal terminal is not limited to a notch. For example, a protrusion that serves as an anchor may be used. FIG. 7 shows a plan view and a side view of a metal terminal 2C of the second embodiment, and a partially enlarged view of a protrusion 9. The metal terminal 2C includes a terminal portion 21 and a serration portion 22C. Two protrusions 9 are formed on the first side end 28 and the second side end 29 of the serration portion 22C. One of the two protrusions 9 is formed on the first plate portion 23. The other is formed on the third plate portion 25.

[0078] The serration portion 22C is formed with a semi-intersecting portion 5 and a peeling prevention portion 6. The semi-intersecting portion 5 is provided at each of the two protruding portions 9. The semi-intersecting portion 5 extends from the tip of the protruding portion 9 provided at the first side end portion 28 to the tip of the protruding portion 9 provided at the second side end portion 29.

[0079] The protrusion 9 has the same plate thickness as the serration portion 22C. As shown in the partially enlarged view of Fig. 7, the protrusion 9 includes a base 91 connected to the first side end portion 28 or the second side end portion 29, and a wide portion 92 that is wider in the X direction than the base 91. In the protrusion 9 shown in Fig. 7, the tip of the protrusion 9 is the widest part of the wide portion 92.

[0080] In the composite member 1 shown in FIG. 1, when the metal terminal 2C of FIG. 7 is used instead of the metal terminal 2, the protrusion 9 functions as an anchor. In addition, the resin around the protrusion 9 enters the groove 51 of the half-through processing part 5 and connects with the hardened resin to suppress deformation of the resin at the side end, enhancing the function as an anchor. Therefore, it is possible to suppress the resin from floating at the side end of the metal terminal 2C. In addition, the resin that enters the groove 51 of the half-through processing part 5 and hardens can maintain contact with the inner surface of the groove 51 even if resin floating occurs in the terminal width direction (Y direction). Therefore, it is possible to improve the water resistance and airtightness of the part where the metal terminal 2C penetrates the resin.

[0081] Fig. 8 is an explanatory diagram of metal terminals 2C with the positions of the protrusions 9 shifted. When multiple metal terminals 2C shown in Fig. 7 are inserted into the composite material 1 shown in Fig. 1, it is preferable to shift the positions of the protrusions 9 of adjacent metal terminals 2C in the X direction as shown in Fig. 8. In this way, even if a space cannot be secured to widen the gap between adjacent metal terminals 2C, it is possible to prevent the protrusions 9 of adjacent metal terminals 2C from coming into contact with each other and causing a short circuit.

[0082] (Modification of protrusion) The protrusion of the metal terminal is not limited to the shapes shown in Fig. 7 and Fig. 8. Fig. 9 shows a plan view, a side view, and a perspective view of a metal terminal 2D having a modified protrusion 9D, and a partially enlarged view of the protrusion 9D. The metal terminal 2D has a terminal portion 21 and a serration portion 22D. The first side end portion 28 and the second side end portion 29 of the serration portion 22D each have one protrusion 9D. The protrusion 9D is formed on the first plate portion 23.

[0083] The serration portion 22D is formed with a half-through processing portion 5 and a peeling prevention portion 6. The half-through processing portion 5 extends from the protruding portion 9D provided at the first side end 28 to the protruding portion 9D provided at the second side end 29. Furthermore, a thin-walled portion 93 that is thinner than the plate thickness of the serration portion 22D is provided at the tip of the protruding portion 9D. By providing the thin-walled portion 93, the three-dimensional shape of the protruding portion 9 becomes more complex. This enhances the effect of suppressing the deformation of the resin, making it possible to make it more difficult for the resin to float. In addition, the thin-walled portion 93 can be formed by flat pressing in the same direction as the pressing process for providing the protruding portion 9D and the half-through processing portion 5, so that the manufacturing process of the metal terminal 2D can be prevented from becoming complicated and the cost of parts can be prevented from increasing.

[0084] As shown in the partially enlarged view of FIG. 9, the protrusion 9D has a shape in which the width in the X direction is greater at the tip than at the base connected to the first side end 28. In addition, a corner 96 connecting a side surface 94 of the protrusion 9D to a tip surface 95, and a corner 97 connecting the side surface 94 of the protrusion 9D to the first side end 28 or the second side end 29 are all rounded. This causes the corners of the resin around the protrusion 9D to be rounded. Therefore, it is possible to suppress a decrease in the anchor effect caused by cracks occurring at the corners of the resin during cold shrinkage under a thermal cycle.

[0085] (Other forms) FIG. 10 is an explanatory diagram of a metal terminal 2E and a composite member 1E having a peeling prevention portion 6E. As shown in the lower diagram of FIG. 10, the composite member 1E has a metal terminal 2E and a resin molded body 3E. The composite member 1E is used as a case for a sensor unit, similar to the above embodiment. The metal terminal 2E has a round bar-shaped insert portion 7E that penetrates the resin molded body 3E. The insert portion 7E extends linearly in the terminal longitudinal direction (X direction). The insert portion 7E has a circular It may be rod-shaped or plate-shaped in cross section other than the above.

[0086] As shown in the upper left diagram of Fig. 10, a peeling prevention part 6E is formed on the entire surface of the insert part 7E. As shown in the upper right diagram of Fig. 10, the peeling prevention part 6E has the same configuration as the peeling prevention part 6 formed in each of the above-mentioned forms, except that it is formed on a cylindrical surface instead of a flat surface. That is, the groove 61E of the peeling prevention part 6E has an undercut shape because a crushed part 63E is provided at the tip of the convex part 62E. Therefore, it is possible to suppress the resin floating on the surface of the insert part 7E.

[0087] The groove 61E of the peel prevention portion 6E is inclined with respect to the terminal longitudinal direction (X direction) shown in the upper left diagram of Fig. 10. It is also inclined with respect to the circumferential direction of the outer peripheral surface of the insert portion 7E. Therefore, when insert molding is performed, if the resin flow direction is aligned with the X direction or the circumferential direction, it is possible to reduce the resistance when the molten resin material flows into the groove 61E and the resistance when the molten resin material flows along the groove 61E. Therefore, it is possible to suppress insufficient filling of the resin into the groove 61E and to enhance the anchor effect.

[0088] As shown in the upper right diagram of FIG. 10, the planar shape of the protrusion 62E is a rhombus in which the diagonal dimension in the terminal longitudinal direction (X direction) is smaller than the diagonal dimension in the circumferential direction. The planar shape of the protrusion 62E may be a rhombus in which the diagonal dimension in the terminal longitudinal direction (X direction) is larger than the diagonal dimension in the circumferential direction. In this way, when the resin flow direction is aligned with the X direction, the angle between the side surface of the protrusion 62E and the resin flow direction can be made smaller. Therefore, the resistance when the molten resin material flows along the groove 61E can be made smaller.

[0089] The peeling prevention portion 6E is formed in the round bar-shaped insert portion 7E by, for example, the following method. First, the surface of the round bar is knurled in a mesh pattern by rolling. This forms a lattice-shaped groove 61E. Then, by drawing the bar through a hole in a cylindrical die, the tip of the protrusion 62E is crushed to form a crushed portion 63E. This gives the groove 61E an undercut shape.

[0090] The metal terminal 2E has a peeling prevention portion 6E, but does not have a notch or a half-through processed portion. In the above-mentioned metal terminals, the half-through processed portion, the notch or the protruding portion can be omitted, as in the metal terminal 2E. When the half-through processed portion, the notch or the protruding portion is omitted, it is preferable to provide a peeling prevention portion having a lattice-shaped undercut groove on the entire outer peripheral surface of the serration portion, as in the metal terminal 2E.

[0091] As described above, this specification discloses the following configurations. (1) A metal terminal to be inserted into a resin molded body, The resin molded body has an exposed portion exposed to an outside thereof, and an insert portion covered by the resin molded body. A peeling prevention portion is formed on the surface of the insert portion, the peeling prevention portion includes a lattice-shaped groove and a protrusion surrounded by the groove, The metal terminal is characterized in that the protrusion has a crushed portion with a crushed tip.

[0092] (2) The metal terminal according to (1) above, wherein the inclination angle of the groove with respect to the resin flow direction on the surface of the peeling prevention portion is smaller than the inclination angle of the groove with respect to a direction perpendicular to the resin flow direction.

[0093] (3) The insert portion extends in a plate shape in the longitudinal direction of the terminal, The peeling prevention portion is formed on a surface of the insert portion in a plate thickness direction, The metal terminal according to (1) or (2) above, wherein the groove is inclined with respect to a longitudinal direction of the terminal and is inclined with respect to a width direction of the terminal perpendicular to the longitudinal direction of the terminal.

[0094] (4) The groove has an inclination angle with respect to the longitudinal direction of the terminal that is smaller than an inclination angle with respect to the width direction of the terminal, The metal terminal according to claim 3, wherein the planar shape of the protrusion is a rhombus having a diagonal dimension in the longitudinal direction of the terminal greater than a diagonal dimension in the width direction of the terminal.

[0095] (5) The insert portion extends in a rod-like shape in the longitudinal direction of the terminal, The peeling prevention portion is formed on an outer peripheral surface of the insert portion, The metal terminal according to (1) or (2) above, wherein the groove is inclined with respect to the longitudinal direction of the terminal.

[0096] (6) The insert portion extends in a longitudinal direction of the terminal in a round bar shape, The peeling prevention portion is formed on an outer peripheral surface of the insert portion, The metal terminal according to (1) or (2) above, wherein the groove is inclined with respect to a longitudinal direction of the terminal and is also inclined with respect to a circumferential direction of an outer circumferential surface of the insert portion. [Explanation of symbols]

[0097] 1, 1E...Composite member, 2, 2A, 2B, 2C, 2D, 2E...Metal terminal, 3, 3E...Resin molded body, 4, 4A, 4B...Notch, 5...Half-through processing part, 6, 6E...Peeling prevention part, 7, 7E...Insert part, 8...Exposed part, 9, 9D...Protruding part, 11...First anchor Car part, 12...Second anchor part, 13...Base, 14...Tip part, 21...Terminal part, 22, 22A, 22B, 22C, 22D...Serration part, 23...First plate part, 24...Second plate part, 25...Third plate part, 26...Fourth plate part, 27...Through hole, 28...First side end part, 29...second side end, 31...bottom, 32...edge, 40...opening, 41...first groove, 42, 42A, 42B...second groove, 43, 44...corner, 45...first notch, 46...second notch, 47, 47A...wall, 51...groove, 52...rib, 61, 61E...groove, 62, 62E...projection, 63, 63E...crushed portion, 91...base, 92...wide portion, 93...thin portion, 94...side, 95...tip surface, 96, 97...corner, F...resin flow direction, L...axis of symmetry, S1...internal space, S2...external space, X...terminal longitudinal direction, Y...terminal width direction

Claims

1. A metal terminal to be inserted into a resin molded body, an exposed portion exposed to an outside of the resin molded body, and a plate-shaped insert portion covered by the resin molded body; The insert portion is provided with a notch portion formed by cutting out a side end portion of the insert portion in a terminal width direction, and a semi-through processed portion is provided extending in the terminal width direction from an inner peripheral edge of the notch portion, The metal terminal is characterized in that the notch portion has an undercut shape in which the width of the inner portion is wider than the width of the opening that opens to the side end portion.

2. The notch portion is provided at one side end portion of the insert portion in the terminal width direction and at the other side end portion of the insert portion in the terminal width direction, 2. The metal terminal according to claim 1, wherein the semi-processed portion extends from the notch provided at the side end portion on the one side to the notch provided at the side end portion on the other side.

3. The side end portion is provided with two notches and a wall portion extending in the terminal width direction between the two notches, Each of the two notches includes a first groove extending in the terminal width direction from an opening that opens at the side end, and a second groove extending in the terminal longitudinal direction perpendicular to the terminal width direction from the first groove, The metal terminal according to claim 2, characterized in that the second groove in one of the two cutout portions and the second groove in the other of the two cutout portions both extend from the first groove in a direction opposite to the wall portion.

4. 4. The metal terminal according to claim 3, wherein a corner where an inner peripheral surface of the notch and the side end portion are connected is rounded.

5. 4. The metal terminal according to claim 3, wherein a corner of the concave shape on the inner peripheral surface of the notch is rounded.

6. A metal terminal to be inserted into a resin molded body, an exposed portion exposed to an outside of the resin molded body, and a plate-shaped insert portion covered by the resin molded body; The insert portion is provided with a protruding portion protruding from a side end portion of the insert portion in a terminal width direction, and a semi-through processed portion is provided extending in the terminal width direction from a tip of the protruding portion, The metal terminal is characterized in that the protrusion has a plate thickness equal to that of the insert portion and has a wide portion that is wider than a base portion connected to the side end portion.

7. The protrusion is provided at one side end of the insert portion in the terminal width direction and at the other side end of the insert portion in the terminal width direction, 7. The metal terminal according to claim 6, wherein the semi-processed portion extends from the protruding portion provided at the side end portion on the one side to the protruding portion provided at the side end portion on the other side.

8. 8. The metal terminal according to claim 7, wherein a thin portion having a thickness smaller than a plate thickness of the insert portion is provided at a tip of the protruding portion.

9. A metal terminal to be inserted into a resin molded body, an exposed portion exposed to an outside of the resin molded body, and a plate-shaped insert portion covered by the resin molded body; The insert portion is provided with a notch portion formed by cutting out a side end portion of the insert portion in a terminal width direction, or a protruding portion protruding from the side end portion, and a semi-through processed portion is provided extending in the terminal width direction from a tip of the protruding portion or an inner peripheral edge of the notch portion, The insert portion has a peeling prevention portion formed on a surface in a plate thickness direction, the peeling prevention portion includes a lattice-shaped groove and a protrusion surrounded by the groove, the groove is inclined with respect to the terminal width direction and with respect to the terminal longitudinal direction perpendicular to the terminal width direction, The metal terminal is characterized in that the protrusion has a crushed portion with a crushed tip.

10. The groove has an inclination angle with respect to the longitudinal direction of the terminal that is smaller than an inclination angle with respect to the width direction of the terminal, 10. The metal terminal according to claim 9, wherein the planar shape of the protrusion is a rhombus having a diagonal dimension in the terminal's longitudinal direction greater than a diagonal dimension in the terminal's width direction.

11. A composite member comprising: the metal terminal according to claim 1 ; and a resin molded body into which the metal terminal is inserted.

12. 12. The composite member according to claim 11, wherein the resin molding is a nylon resin based on metaxylenediamine, and a fibrous filler is added to the nylon resin.

13. A connector comprising: the metal terminal according to any one of claims 6 to 8; and a resin molded body into which a plurality of the metal terminals are inserted; The plurality of metal terminals are arranged in the terminal width direction, A composite member, characterized in that the positions of the protrusions of adjacent metal terminals are shifted in a terminal longitudinal direction perpendicular to the terminal width direction.

14. A method for manufacturing a composite member having the metal terminal according to claim 10 and a resin molded body into which the metal terminal is inserted, comprising the steps of: A manufacturing method for a composite member, characterized in that the gate position of the mold is set so that the resin flow direction when molten resin material is filled into the mold in which the metal terminal is arranged coincides with the longitudinal direction of the terminal at least on the surface of the peel-prevention portion, and also coincides with the diagonal direction of the convex portion on the side with the larger diagonal dimension.

Images