JP2018099849A - Resin composite molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that seals a gap created between a metal terminal and a resin molding when the resin molding has expanded.SOLUTION: A resin composite molding includes an oblong plate-shaped metal terminal and a resin molding covering the metal terminal in a state where both longitudinal ends of the metal terminal are exposed. A surface of the metal terminal is provided with a plurality of V-grooves with interval in the longitudinal direction of the metal terminal. Each of the V-grooves extends along the plate width direction and the plate thickness direction over the whole periphery of the metal terminal, and is covered by the resin molding.SELECTED DRAWING: Figure 1

Description

  The technique disclosed in this specification relates to a resin composite molded body including a metal terminal and a resin molded body.

  The resin composite molded body disclosed in Patent Document 1 includes a long plate-shaped metal terminal and a resin molded body covering the metal terminal in a state where the end in the longitudinal direction of the metal terminal is exposed. Yes. A plurality of grooves are provided on the surface of the metal terminal at intervals in the longitudinal direction of the metal terminal. The plurality of grooves are covered with a resin molded body. In the resin composite molded body of Patent Document 1, a groove is deeply formed in a trapezoidal shape in order to seal a gap formed between the metal terminal and the resin molded body when the resin contracts.

JP 2012-101394 A

  In a resin composite molded body including a metal terminal and a resin molded body, the metal terminal and the resin molded body may expand depending on the use environment. For example, when the resin composite molded body is used in a high temperature environment, the metal terminal and the resin molded body are thermally expanded. Since the linear expansion coefficient differs between metal and resin, when the metal terminal and the resin molded body expand, a gap is formed between the metal terminal and the resin molded body. Further, for example, when the resin composite molded body is used in a liquid, the resin molded body may expand due to resin swelling and a gap may be formed between the metal terminal and the resin molded body. Therefore, the present specification provides a technique capable of sealing a gap formed between the metal terminal and the resin molded body when the resin molded body expands.

  A resin composite molded body disclosed in the present specification includes a long plate-shaped metal terminal, and a resin molded body covering the metal terminal in a state where both ends in the longitudinal direction of the metal terminal are exposed. ing. A plurality of V-grooves are provided on the surface of the metal terminal at intervals in the longitudinal direction of the metal terminal. Each of the plurality of V-grooves extends over the entire circumference of the metal terminal along the plate width direction and the plate thickness direction of the metal terminal, and is covered with the resin molded body.

  According to such a configuration, since the V groove is provided on the surface of the metal terminal, when the resin molded body expands, the resin molded body covering the V groove comes into contact with the V groove and the metal A gap between the terminal and the molded resin is sealed. Moreover, since the V-groove extends over the entire circumference of the metal terminal along the plate width direction and the plate thickness direction of the metal terminal, the gap is sealed over the entire circumference of the metal terminal. When the resin molded body expands relatively larger than the metal terminal, it is possible to suppress an increase in the gap between the metal terminal and the resin molded body, and as a result, the gap can be sealed.

  In the resin composite molded body, a through-hole penetrating the metal terminal in the plate thickness direction may be provided between the two V grooves adjacent to each other in the longitudinal direction of the metal terminal. The through hole may be covered with the resin molded body.

  According to such a configuration, since the resin molded body covers the through hole provided in the metal terminal, the resin molded body comes into contact with the inner peripheral surface of the through hole when the resin molded body expands. The relative movement of the metal terminal and the resin molded body is restricted. Thereby, when the resin molded body expands, the relative displacement between the metal terminal and the resin molded body can be suppressed.

  In the resin composite molded body, the through hole may be provided in a central portion between the two V grooves adjacent to each other in the longitudinal direction and a central portion in the plate width direction of the metal terminal. Good.

  According to such a configuration, the relative movement between the metal terminal and the resin molded body can be more strictly regulated.

  In the resin composite molded body, recesses may be provided on both side surfaces in the plate width direction of the metal terminal at a central portion between the two V grooves adjacent to each other in the longitudinal direction. The concave portion may be covered with the resin molded body.

  In the configuration in which the resin molded body covers the through hole provided in the metal terminal, a gap is formed between the through hole and the resin molded body when the resin molded body contracts after the resin molded body expands. There is. If it does so, relative movement of a metal terminal and a resin molding may not be controlled, but a metal terminal and a resin molding may shift in position relatively. However, according to the above configuration, since the resin molded body covers the recess provided on the side surface of the metal terminal, when the resin molded body contracts, the resin molded body adheres to the recess and the metal terminal The relative movement of the resin molding is restricted. Thereby, when the resin molding contracts, the relative displacement between the metal terminal and the resin molding can be suppressed.

ただし、上記の関係式（１）及び（２）において、
Ａは、前記金属端子の板幅であり、
Ｂは、前記金属端子の長手方向に隣り合っている２つの前記Ｖ溝の間の距離であり、
Ｃは、前記金属端子の板厚であり、
θ１は、前記金属端子の板幅方向の側面に設けられているＶ溝の角度であり、
θ２は、前記金属端子の板厚方向の側面に設けられているＶ溝の角度である。 The metal terminals of the resin composite molded body may satisfy the following relational expressions (1) and (2).

However, in the above relational expressions (1) and (2),
A is the plate width of the metal terminal,
B is a distance between two V grooves adjacent to each other in the longitudinal direction of the metal terminal;
C is the thickness of the metal terminal,
θ1 is the angle of the V groove provided on the side surface in the plate width direction of the metal terminal,
θ2 is the angle of the V groove provided on the side surface in the plate thickness direction of the metal terminal.

  According to such a configuration, when the resin molded body expands, the resin molded body covering the V-groove appropriately contacts the V-groove. That is, the angle θ1 of the V groove provided on the side surface in the plate width direction of the metal terminal is related to the amount of expansion in the longitudinal direction of the metal terminal and the amount of expansion in the plate width direction when the resin molded body expands. Therefore, when the resin molded body expands, the resin molded body reliably contacts the V-groove. Similarly, the angle θ2 of the V groove provided on the side surface in the plate thickness direction of the metal terminal is the difference between the expansion amount in the longitudinal direction of the metal terminal and the expansion amount in the plate thickness direction when the resin molded body expands. Since it is defined in consideration of the relationship, when the resin molded body expands, the resin molded body reliably contacts the V-groove. Thereby, a gap formed between the metal terminal and the resin molded body can be surely sealed.

  The resin composite molded body may be used for a fuel supply device.

  According to such a structure, when the resin molded body expand | swells by the resin swelling with a fuel, it can suppress that the clearance gap made between a metal terminal and a resin molded body becomes large.

It is a perspective view of the resin compound molded object which concerns on an Example. It is a perspective view of the metal terminal which concerns on an Example. It is a top view which expands and shows the principal part of a metal terminal. It is a side view which expands and shows the principal part of a metal terminal. It is VV sectional drawing of FIG. It is VI-VI sectional drawing of FIG. It is sectional drawing corresponding to FIG. 5 when a metal terminal and a resin molding expand | swell. It is sectional drawing corresponding to FIG. 6 when a metal terminal and a resin molding expand | swell. It is an enlarged view of the principal part IX of FIG. It is a top view which expands and shows the principal part of the metal terminal which concerns on another Example. It is a side view which expands and shows the principal part of the metal terminal which concerns on another Example. It is sectional drawing corresponding to FIG. 5 when the metal terminal and resin molding which concern on another Example shrink | contract. It is an enlarged view of the principal part XIII of FIG. It is a figure which shows schematic structure of a fuel supply apparatus.

  A resin composite molded body 1 according to an example will be described with reference to the drawings. As shown in FIGS. 1 to 6, the resin composite molded body 1 includes a long plate-like metal terminal 2 and a resin molded body 3 covering the metal terminal 2. The metal terminal 2 is inserted into the resin molded body 3. The resin composite molded body 1 is manufactured by insert molding.

  The metal terminal 2 has conductivity. A plurality of V grooves 21 are formed on the surface of the metal terminal 2. In this embodiment, two V grooves 21 are formed in the metal terminal 2. The plurality of V grooves 21 are provided at intervals in the longitudinal direction of the metal terminal 2 (X direction in the figure).

  Each V groove 21 is formed in an alphabetic V shape. Each V groove 21 is provided over the entire circumference of the metal terminal 2. Each V-groove 21 extends along the plate width direction (Y direction in the figure) and the plate thickness direction (Z direction in the figure) of the metal terminal 2.

  A through hole 25 is formed in the metal terminal 2. The through hole 25 is formed in a circular shape in plan view. The through hole 25 penetrates the metal terminal 2 in the plate thickness direction. The through hole 25 is provided in the central portion of the metal terminal 2 in the plate width direction. Further, the through hole 25 is provided at the center between the two V grooves 21 adjacent to each other in the longitudinal direction of the metal terminal 2. One through hole 25 is formed in the middle of the two V grooves 21.

  The resin molded body 3 is formed in a substantially cylindrical shape. The resin molded body 3 covers the metal terminal 2 with both end portions in the longitudinal direction of the metal terminal 2 exposed. The resin molded body 3 covers the central portion of the metal terminal 2. The resin molded body 3 is in close contact with the surface of the metal terminal 2. The resin molded body 3 covers two V grooves 21 formed in the metal terminal 2 and one through hole 25. A part of the resin molded body 3 enters the two V grooves 21 and one through hole 25. The resin linear expansion coefficient in the resin molded body 3 is larger than the metal linear expansion coefficient in the metal terminal 2.

  When the resin molded body 3 covers the metal terminal 2 by insert molding, a part of the resin molded body 3 enters the V groove 21 of the metal terminal 2. Thereby, as shown in FIGS. 5 and 6, a plurality of protrusions 31 are formed on the inner peripheral surface of the resin molded body 3. Each protrusion 31 of the resin molded body 3 is engaged with each V groove 21 of the metal terminal 2. When the resin molded body 3 contracts by insert molding, the resin molded body 3 adheres to the surface of the metal terminal 2. Therefore, in the normal time after insert molding, when the resin molded body 3 is not expanded, the gap between the metal terminal 2 and the resin molded body 3 is so small that it can be ignored.

Further, the metal terminals 2 in the resin composite molded body 1 satisfy the following relational expressions (1) and (2).

  However, in the above relational expressions (1) and (2), A is the plate width of the metal terminal 2 as shown in FIG. More specifically, between the bottom 212 of the V groove 21 provided on one side surface in the plate width direction of the metal terminal 2 and the bottom 212 of the V groove 21 provided on the other side surface in the plate width direction. Distance. B is the distance between the two V grooves 21 formed in the metal terminal 2. More specifically, it is the distance between the bottom 212 and the bottom 212 of the two V grooves 21 adjacent to each other in the longitudinal direction of the metal terminal 2. As shown in FIG. 4, C is the thickness of the metal terminal 2. More specifically, between the bottom 212 of the V groove 21 provided on one side surface in the plate thickness direction of the metal terminal 2 and the bottom 212 of the V groove 21 provided on the other side surface in the plate thickness direction. Distance. Further, as shown in FIG. 3, θ1 is an angle of the V groove 21 when the metal terminal 2 is viewed in plan. More specifically, the angle is the angle of the bottom 212 of the V-groove 21 provided on the side surface of the metal terminal 2 in the plate width direction. Further, as shown in FIG. 4, θ2 is an angle of the V groove 21 when the metal terminal 2 is viewed from the side. More specifically, the angle is the angle of the bottom 212 of the V groove 21 provided on the side surface of the metal terminal 2 in the plate thickness direction.

  As is clear from the above description, the resin composite molded body 1 according to the embodiment is a metal terminal 2 in a state in which the long plate-like metal terminal 2 and both ends in the longitudinal direction (X direction) of the metal terminal 2 are exposed. And a resin molded body 3 covering 2. A plurality of V grooves 21 are provided on the surface of the metal terminal 2 at intervals in the longitudinal direction of the metal terminal 2. Each of the plurality of V grooves 21 extends over the entire circumference of the metal terminal 2 along the plate width direction (Y direction) and the plate thickness direction (Z direction) of the metal terminal 2, and is covered with the resin molded body 3. Yes.

  In the resin composite molded body 1, the metal terminal 2 and the resin molded body 3 may expand depending on the usage environment. For example, when the resin composite molded body 1 is used in a high temperature environment, the metal terminal 2 and the resin molded body 3 are thermally expanded. At this time, the linear expansion coefficient is different between the metal and the resin, and since the linear expansion coefficient of the resin is larger than the linear expansion coefficient of the metal, when the metal terminal 2 and the resin molded body 3 expand, as shown in FIGS. A gap 100 is formed between the surface of the metal terminal 2 and the resin molded body 3. For example, when the resin composite molded body 1 is used in a liquid fuel such as gasoline, the resin molded body 3 expands due to resin swelling and a gap 100 is formed between the surface of the metal terminal 2 and the resin molded body 3. There are things you can do. Since the linear expansion coefficients of the metal and the resin are different, the inner peripheral surface of the resin molded body 3 expands outward from the outer peripheral surface of the metal terminal 2 to form a gap 100.

  At this time, according to the above configuration, as shown in FIG. 9, since the V groove 21 is provided on the surface of the metal terminal 2, when the resin molded body 3 expands, the V groove 21 is covered. The protrusion 31 of the resin molded body 3 is in contact with the inclined surface 214 of the V groove 21 to seal the gap 100 between the metal terminal 2 and the resin molded body 3. Further, since the V-groove 21 extends over the entire circumference of the metal terminal 2 along the plate width direction and the plate thickness direction of the metal terminal 2, the gap 100 is sealed over the entire circumference of the metal terminal 2. When the resin molded body 3 expands relatively larger than the metal terminal 2, it is possible to suppress an increase in the gap 100 formed between the metal terminal 2 and the resin molded body 3, and as a result, the gap 100 can be sealed. .

  Moreover, since the protrusion 31 of the resin molded body 3 is in close contact with the inclined surface 214 of the V-groove 21 and seals the gap 100, it is possible to suppress liquid such as gasoline from passing through the resin composite molded body 1 through the gap 100. Further, since the groove 21 is V-shaped, when the resin molded body 3 expands, the protrusion 31 of the resin molded body 3 comes into contact with the inclined surface 214 of the V groove 21 without excessively strong contact. The groove 21 is formed in a V-shape for when the resin molded body 3 expands. Moreover, since the groove | channel 21 is V-shaped, the metal terminal 2 can be ensured the cross-sectional area of the metal terminal 2 without notching large. Therefore, the conductivity of the metal terminal 2 can be ensured.

  In the resin composite molded body 1, a through hole 25 that penetrates the metal terminal 2 in the plate thickness direction is provided between two V grooves 21 adjacent to each other in the longitudinal direction of the metal terminal 2. The through hole 25 is covered with the resin molded body 3. According to such a configuration, when the resin molded body 3 expands, the resin molded body 3 entering the through hole 25 comes into contact with the inner peripheral surface of the through hole 25 and the metal terminal 2 and the resin molded body 3 Relative movement is regulated. Thereby, when the resin molding 3 expand | swells, the relative position shift of the metal terminal 2 and the resin molding 3 can be suppressed.

  Further, in the resin composite molded body 1, the through hole 25 is provided in the central portion between the two V grooves 21 adjacent in the longitudinal direction and the central portion in the plate width direction of the metal terminal 2. Yes. According to such a configuration, the relative movement between the metal terminal 2 and the resin molded body 3 can be more strictly regulated. A relative positional shift between the metal terminal 2 and the resin molded body 3 can be suppressed with good balance in each direction.

  Moreover, in the metal terminal 2 in said resin composite molded object 1, said relational expression (1) and (2) are satisfy | filled. In the above relational expression (1), the angle θ1 of the V groove 21 provided on the side surface in the plate width direction (Y direction) of the metal terminal 2 is the longitudinal direction of the metal terminal 2 when the resin molded body 3 expands. It is defined in consideration of the relationship between the amount of expansion in the (X direction) and the amount of expansion in the plate width direction (Y direction). That is, the expansion amount and ratio of the resin molded body 3 in the longitudinal direction (X direction) and the plate width direction (Y direction) and the angle θ1 of the V groove 21 are adapted. Therefore, when the resin molded body 3 expands, the protrusion 31 of the resin molded body 3 reliably contacts the inclined surface 214 of the V groove 21. Similarly, in the above relational expression (2), the angle θ2 of the V groove 21 provided on the side surface in the plate thickness direction (Z direction) of the metal terminal 2 indicates that the metal terminal 2 when the resin molded body 3 expands. Is defined in consideration of the relationship between the amount of expansion in the longitudinal direction (X direction) and the amount of expansion in the plate thickness direction (Z direction). That is, the expansion amount and ratio of the resin molded body 3 in the longitudinal direction (X direction) and the plate thickness direction (Z direction) and the angle θ2 of the V groove 21 are adapted. Therefore, when the resin molded body 3 expands, the protrusion 31 of the resin molded body 3 reliably contacts the inclined surface 214 of the V groove 21. Thereby, the gap 100 formed between the metal terminal 2 and the resin molded body 3 can be reliably sealed.

  Although one embodiment has been described above, the specific mode is not limited to the above embodiment. In the following description, the same components as those described above are denoted by the same reference numerals and description thereof is omitted.

  In another embodiment, a plurality of recesses 28 may be formed in the metal terminal 2 as shown in FIGS. In this embodiment, two recesses 28 are formed. Concave portions 28 are formed on both side surfaces of the metal terminal 2 in the plate width direction. Each recess 28 opens toward the outside in the plate width direction of the metal terminal 2. Each recess 28 is provided at the center between two V grooves 21 adjacent to each other in the longitudinal direction of the metal terminal 2. Recesses 28 are formed in the middle of the two V grooves 21. Each recess 28 is adjacent to the through hole 25 in the plate width direction of the metal terminal 2. Each recess 28 is formed in a semicircular shape in plan view. As shown in FIG. 12, the resin molded body 3 covers the two V grooves 21 formed in the metal terminal 2, the two recesses 28, and the one through hole 25. The recess 28 is covered with the resin molded body 3.

  In the resin composite molded body 1, when the resin molded body 3 contracts after the resin molded body 3 expands, as shown in FIGS. 12 and 13, the inner peripheral surface of the through hole 25 and the resin molded body. A gap 200 may be formed between the three. If it does so, the relative movement of the metal terminal 2 and the resin molding 3 may not be regulated, but the metal terminal 2 and the resin molding 3 may be displaced relatively. That is, since the resin molded body 3 does not contact the inner peripheral surface of the through hole 25, there is a possibility that the positional deviation cannot be regulated. However, according to the above configuration, since the resin molded body 3 covers the recess 28 provided on the side surface of the metal terminal 2, the resin molded body 3 becomes the recess 28 when the resin molded body 3 contracts. The relative movement of the metal terminal 2 and the resin molded body 3 is regulated by closely contacting. Thereby, not only when the resin molded body 3 expands but also when the resin molded body 3 contracts, relative displacement between the metal terminal 2 and the resin molded body 3 can be suppressed.

  The resin composite molded body 1 can be used in a fuel supply device. Next, an example of a fuel supply device in which the resin composite molded body 1 is used will be described. FIG. 14 is a diagram illustrating a schematic configuration of the fuel supply apparatus 300. A fuel supply device 300 shown in FIG. 14 is a device for supplying fuel in a fuel tank 61 of a vehicle such as an automobile to an internal combustion engine (not shown). The fuel supply device 300 includes a fuel pump unit 62 and a set plate 63. The fuel pump unit 62 is accommodated in the fuel tank 61. The fuel pump unit 62 is attached to the set plate 63. The set plate 63 closes the opening of the fuel tank 61. The set plate 63 is attached to the upper part of the fuel tank 61. The fuel pump unit 62 sucks the fuel in the fuel tank 61 into the fuel pump unit 62, boosts the fuel, and discharges the fuel outside the fuel pump unit 62. The fuel discharged from the fuel pump unit 62 is supplied to an internal combustion engine (not shown). The fuel pump unit 62 includes a motor 65 and sucks the fuel in the fuel tank 61 by the force of the motor 65.

  The resin composite molded body 1 is attached to the set plate 63 of the fuel supply apparatus 300. The resin molded body 3 of the resin composite molded body 1 is integrated with the set plate 63. One end portion 27 of the metal terminal 2 of the resin composite molded body 1 faces the inside of the fuel tank 61. The other end portion 29 of the metal terminal 2 of the resin composite molded body 1 faces the outside of the fuel tank 61. One end 27 of the metal terminal 2 may come into contact with the fuel in the fuel tank 61. The other end 29 of the metal terminal 2 does not contact the fuel in the fuel tank 61. One end 27 of the metal terminal 2 is electrically connected to the motor 65 through the first power line 51. The other end 29 of the metal terminal 2 is electrically connected to a power source (not shown) via the second power line 52. The resin composite molded body 1 is used as a connector for supplying electric power from a power source to the motor 65.

  In the resin composite molded body 1 used in the fuel supply device 300 described above, even if the resin molded body 3 expands due to resin swelling due to the fuel in the fuel tank 61, it can be formed between the metal terminal 2 and the resin molded body 3. An increase in the gap can be suppressed.

  In the above embodiment, the set plate 63 is attached to the upper part of the fuel tank 61, but the present invention is not limited to this configuration. In another embodiment, the set plate 63 may be attached to the bottom of the fuel tank 61. In this case, the one end 27 of the metal terminal 2 is always in contact with the fuel in the fuel tank 61.

  In the above embodiment, the resin composite molded body 1 is used as a connector for supplying power from the power source to the motor 65. However, the present invention is not limited to this configuration. In another embodiment, the resin composite molded body 1 may be used as a connector for transmitting a control signal from a controller (not shown) to the motor 65.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings can achieve a plurality of objects at the same time, and has technical usefulness by achieving one of the objects.

1: Resin composite molded body 2: Metal terminal 3: Resin molded body 21: V groove 25: Through hole 27: One end portion 28: Recessed portion 29: Other end portion 31: Projection 51: First power line 52: Second power line 61: Fuel tank 62: Fuel pump unit 63: Set plate 65: Motor 100: Gap 200: Gap 212: Bottom 214: Slope 300: Fuel supply device

Claims (6)

A long metal terminal,
A resin molded body covering the metal terminal in a state in which both ends in the longitudinal direction of the metal terminal are exposed, and
The surface of the metal terminal is provided with a plurality of V grooves spaced in the longitudinal direction of the metal terminal,
Each of the plurality of V-grooves extends over the entire circumference of the metal terminal along the plate width direction and the plate thickness direction of the metal terminal, and is coated with the resin molding. Between the two V grooves adjacent to each other in the longitudinal direction of the metal terminal, a through-hole penetrating the metal terminal in the plate thickness direction is provided,
The resin composite molded body according to claim 1, wherein the through hole is covered with the resin molded body.   3. The resin composite according to claim 2, wherein the through hole is provided in a central portion between two V grooves adjacent to each other in the longitudinal direction and in a central portion in the plate width direction of the metal terminal. Molded body. Concave portions are provided on both side surfaces of the metal terminal in the plate width direction at the center between the two V grooves adjacent to each other in the longitudinal direction,
The resin composite molded body according to claim 2 or 3, wherein the concave portion is covered with the resin molded body. The resin composite molded body according to any one of claims 1 to 4, wherein the metal terminal satisfies the following relational expressions (1) and (2).

However, in the above relational expressions (1) and (2),
A is the plate width of the metal terminal,
B is a distance between two V grooves adjacent to each other in the longitudinal direction of the metal terminal;
C is the thickness of the metal terminal,
θ1 is an angle of the V groove provided on the side surface in the plate width direction of the metal terminal,
θ2 is the angle of the V-groove provided on the side surface in the plate thickness direction of the metal terminal. The resin composite molded body according to any one of claims 1 to 5, which is used in a fuel supply device.

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