JP2003053773A - Connector and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure of a mold for secondary molding. SOLUTION: In secondary insert molding, a molten resin is injected in a secondary molding cavity 36 formed by bringing the pinch-off part 34 of the mold 31 for secondary molding into contact with the outer surface of a primary molded article 16. Since the projected region of the end part 14A of the terminal metal fitting 14 on the outer surface of a resin molding part 10 is constituted of a primary molding resin part 19, the secondary molding cavity 36 and the pinch-off part 34 are arranged at the non-contact positions with the end part 14A of the terminal metal fitting 14. Accordingly, it is unnecessary to form a fine hole part in which the end part 14A of the terminal metal fitting 14 is fitted to the pinch-off part 34 and the structure of the mold 31 for secondary molding does not become complicated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector manufactured by insert molding and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, a connector having a shape in which an end portion of a terminal fitting is projected from an outer surface of a resin molded portion is shown in FIG. In this connector 100, a primary molded product 101 in which a primary molded resin part 102 and a terminal fitting 103 are integrated is molded by primary insert molding, and a primary molded product 101 and a secondary molded resin part 104 are molded by secondary insert molding. By integrating, the end portion 103A of the terminal fitting 103 is projected from the outer surface of the resin molded portion 105.

When the connector 100 is manufactured through the two-step insert molding as described above, the secondary molding die 106 is used.
Includes the cut-out portion 1 that comes into contact with the outer surface of the primary molded product 101.
No. 07 is provided, and the biting portion 107 forms a secondary molding cavity 108 surrounded by the outer surface of the primary molded product 101 and the inner surface of the secondary molding die 106, and is formed in the secondary molding cavity 108. The secondary molding resin portion 104 is molded by injecting the molten resin.

[0004]

SUMMARY OF THE INVENTION The above-mentioned conventional connector 1
00, the terminal metal fitting 1 on the outer surface of the resin molding portion 105
Since the projecting region 03 is formed by the secondary molding resin portion 104, the cut-off portion 10 of the secondary molding die 106 is formed.
In the portion of 7 corresponding to the projecting region of the terminal fitting 103, the cut-out portion 107 needs to be brought into contact with the terminal fitting 103. Then, the biting portion 107 must be formed with a thin hole portion 109 into which the end portion 103A of the terminal fitting 103 is fitted, and therefore,
There is a problem that the structure of the secondary molding die 106 becomes complicated.

A connector manufactured by insert molding is disclosed in Japanese Patent Laid-Open No. 63-211577. The present invention was created in view of the above circumstances, and an object thereof is to simplify the structure of a secondary molding die.

[0006]

According to a first aspect of the present invention, an end portion of a terminal metal fitting is projected from an outer surface of a resin molding portion, and the primary molding resin portion and the terminal metal fitting are formed by primary insert molding. Mold a primary molded product that integrates and
In the secondary insert molding, the chamfered portion provided in the secondary molding die is brought into contact with the outer surface of the primary molded article to be surrounded by the outer surface of the primary molded article and the inner surface of the secondary molding die. A secondary molding cavity is formed, and a molten resin is injected into the secondary molding cavity to mold the secondary molding resin part, and the secondary molding resin part and the primary molding product are integrated to manufacture. In the connector, the protruding region of the end of the terminal fitting on the outer surface of the resin molded portion is formed by the primary molded resin portion.

According to a second aspect of the present invention, in the first aspect of the present invention, in the primary insert molding, a plurality of the terminal fittings are integrated with the primary resin molding part in the form of chain terminals connected by a carrier, and An escape hole is formed so as to penetrate into a region corresponding to the carrier in the primary molding resin portion, and the terminal fittings are separated by cutting the carrier in the escape hole, and a secondary insert-molded connector is formed. In the above, the terminal fittings separated by cutting the carrier are isolated by the secondary molding resin portion that has entered the escape hole.

According to a third aspect of the present invention, in the second aspect of the present invention, the primary molding resin portion is connected to the secondary molding resin portion on a surface of one of the escape holes on which one end of the relief hole is opened. And a configuration in which the escape hole and the secondary molding resin portion are provided with a locking portion that locks the primary molding resin portion and the secondary molding resin portion by engaging with each other. did. According to a fourth aspect of the present invention, in the connector according to the second or third aspect of the invention, the plurality of the terminal fittings are arranged so as to overlap in the same direction as the penetration direction of the escape hole. , A plurality of primary molded components molded into a form in which the terminal fitting and the primary molded resin component are integrated by primary insert molding are formed by stacking them in the same direction as the penetration direction of the escape hole. There is.

According to a fifth aspect of the present invention, a primary molded product in which the primary molded resin portion and the terminal fitting are integrated is molded by the primary insert molding, and in the secondary insert molding, the bite cut provided on the secondary molding die. A part is brought into contact with the outer surface of the primary molded product to form a secondary molding cavity surrounded by the outer surface of the primary molded product and the inner surface of the secondary molding die, and the secondary molding cavity is formed in the secondary molding cavity. By molding the secondary molded resin portion by injecting the molten resin and integrating the secondary molded resin portion and the primary molded product, the end portion of the terminal fitting is projected from the outer surface of the resin molded portion. According to another aspect of the present invention, there is provided a method of manufacturing a connector having the above-described configuration, wherein a protruding region of an end portion of the terminal fitting on the outer surface of the resin molded portion is formed by the primary molded resin portion.

[0010]

[Advantages and Effects of the Invention] [Inventions 1 and 5] Since the projecting region of the end portion of the terminal fitting on the outer surface of the resin molding portion is constituted by the primary molding resin portion, the secondary molding resin portion and the secondary molding resin portion The secondary molding cavity is arranged in a region separate from the projecting region of the terminal fitting, and the biting part of the secondary molding die is also arranged in a position not in contact with the terminal fitting. Therefore, it is not necessary to form a thin hole portion for fitting the end portion of the terminal fitting in the cut-out portion, and the structure of the secondary molding die is not complicated.

[Invention of Claim 2] Since a plurality of terminal fittings can be set in the primary insert molding die in the form of chain terminals connected by a carrier, compared with the case where the terminal fittings are individually set. Good workability. Further, since the cutting of the carrier is performed inside the escape hole, it is not necessary to remove a part of the primary molding resin portion along with the cutting of the carrier, and the material is not wasted. Further, since the secondary molded resin portion is interposed between the terminal fittings separated by cutting the carrier to isolate the terminal fittings, the terminal fittings can be reliably insulated.

[Invention of Claim 3] Since the escape hole and the secondary molding resin portion are provided with engaging portions for engaging with each other,
Even if the primary molding resin part is connected to the secondary molding resin part on the surface of the outer surface where one end of the escape hole is opened, the primary molding resin part and the secondary molding resin part separate from each other. Can be regulated with certainty. [Invention of Claim 4] When the primary molded resin portion of the primary molded product is molded as a single component, even if a plurality of terminal fittings are arranged so as to overlap in the same direction as the escape hole, the escape The mold cannot be opened because the terminal fittings interfere with forming the hole.

According to the present invention, in the present invention, a plurality of primary molded components are formed by integrating the terminal fitting and the primary molded resin component in the primary insert molding, and the primary molded components are arranged in the escape hole penetrating direction. Since the primary molded product is configured by overlapping in the same direction, it is not necessary to align a plurality of terminal fittings in one primary molded component so as to overlap in the penetrating direction of the escape holes. Therefore,
There is no possibility that the terminal metal fittings interfere with the opening of the escape hole in the primary molding resin component and the mold cannot be opened.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. The connector A of the present embodiment has a plurality of terminals vertically penetrating a resin molding portion 10 in the shape of a rectangular tube whose upper and lower ends are open and a rectangular protrusion 11 formed on the inner wall surface of the resin molding portion 10. The metal fitting 14 is integrated by insert molding. The connector A is manufactured by the primary insert molding in which the chain terminal 13 in which a plurality of vertically elongated terminal fittings 14 are connected by the carrier 15 and the primary molding resin constituent parts 20 and 21 are integrated. One primary molding component 17, 18 is manufactured, and each primary molding component 17, 18 is manufactured.
At 18, the carrier 15 is cut to separate the terminal fittings 14 from each other, and the two primary molded components 17 and 18 that have been cut from the carrier are combined to assemble a single primary molded product 16, and by secondary insert molding, The procedure is to integrate the primary molded product 16 and the secondary molded resin part 37.

The manufacturing process will be described in detail below.
The description will be given for the rectangular protrusion 11 located on the left side in FIGS. 1 and 2, but for the rectangular protrusion 12 located on the upper side in FIG. 2, only the shape of the terminal fitting is different, and the insert molding method is used. The description is omitted because it is the same. Also, in the following description, the left and right directions are based on FIGS. 3 to 5, and the inside and outside are shown in FIGS. 1 and 6 to 1.
The right side of 5 is called the inside.

As shown in FIGS. 3 and 4, the chain terminal 13 has a plurality of terminal fittings 14 arranged in parallel at a fixed pitch.
The adjacent terminal fittings 14 are connected to each other by a carrier 15 at upper and lower two places, and two chain terminals 13 are used for the rectangular protrusion 11. In the primary insert molding, two primary molding dies (not shown) having different shapes are used.
The chain terminals 13 are set one by one, and the first and second primary molded components 17 and 18 in which the primary molded resin components 20 and 21 and the chain terminal 13 are integrated are obtained (FIG. 6).
~ See Figure 9).

The first primary molding component 17 is shown in FIGS.
As shown in FIG. 2, the chain terminals 13 are exposed flush with the inner surface of the primary molding resin component 20 that is in the form of a rectangular thick plate as a whole, and the upper and lower end portions 14A of each terminal fitting 14 are made into the primary molding resin component. The relief holes 22 are formed so as to protrude from both the upper and lower sides of the secondary molding resin 20 and penetrate a plurality of locations corresponding to the respective carriers 15 in the primary molding resin constituent portion 20 between the inner and outer surfaces. At the inner end of the inner wall of each escape hole 22, a pair of upper and lower engaging portions 24, which are notched in a step shape, are formed. Further, the primary molding resin component portion 20 is formed with a pair of upper and lower fitting grooves 26 that are cut out from both left and right side surfaces to the outer surface. Further, on the inner surface of the primary molding resin component portion 20, a frame portion 27 is formed so as to project along the peripheral portion thereof and over the entire upper, lower, left, and right sides, and the space surrounded by the frame portion 27 is A tray-shaped space 28 communicating with the escape hole 22 is formed.

The second primary molded component 18 is shown in FIGS.
As shown in FIG. 1, the primary molding resin component 2 is rectangular as a whole and has a plate shape thicker than the first primary molding component 17.
On the inner surface of 1, the chain terminals 13 are exposed in the same plane, and the upper and lower end portions 14A of each terminal fitting 14 are projected from the primary molding resin constituent portion 21 to both upper and lower sides. The escape hole 23 is formed so that a plurality of locations corresponding to the carrier 15 are penetrated between the inner and outer surfaces. At the inner end of the inner wall of each escape hole 23, a pair of upper and lower engaging portions 25, which are notched in a step shape, are formed. In addition, the primary molding resin component 2
A pair of upper and lower fitting ribs 29 is formed on the inner surface of the inner surface 1 so as to project inward along the left and right side surfaces. Further, retaining ribs 30 protruding in the left-right direction are formed on the outer edges of the left and right side surfaces of the primary molding resin component portion 21.

Next, in the two primary molding components 17 and 18 molded as described above, each carrier 15 is cut. For cutting, use a cutter (not shown) for each escape hole 2
2 and 23, and the adjacent terminal fittings 14 are separated from each other by cutting the carrier 15 (see FIG. 5). After this, the first primary molding component 17 and the second primary molding component 18 after the carrier 15 has been cut are made to have the outer surface and the inner surface in close contact with each other, and the penetration direction of the escape holes 22 and 23. Assembled in the same direction. At the time of assembling, the fitting groove 26 and the fitting rib 29 are fitted to each other, so that both the primary molding resin components 20, 2
1 are integrated to form the primary molding resin portion 19, and thus a single primary molding 16 is obtained (FIGS. 10 and 1).
See 1). In the assembled primary molded product 16, the terminal fitting 14 of the first primary molded component 17 and the terminal fitting 14 of the second primary molded component 18 are parallel to each other, and the escape holes 22 and 23 are penetrated. A form in which the relief holes 22 and 23 of the first primary molding component 17 and the second primary molding component 18 communicate with each other while being arranged so as to overlap in the same direction (the left-right direction in FIG. 10). Has become. The terminal fitting 14 exposed on the inner surface of the second primary molding resin component 21 is covered by the first primary molding resin component 20.

The primary molded product 16 is set in a pair of upper and lower secondary molding dies 31 (see FIG. 12). The secondary molding die 31 has a rectangular frame-shaped molding space 32 for molding the secondary molding resin portion 37, and a housing space 33 for immovably housing the primary molding resin portion 19 of the primary molded product 16.
And the cut-out portion 34 that comes into contact with the outer surface of the primary molded product 16.
And a terminal accommodating recess 35 for accommodating the end portions 14A of the plurality of terminal fittings 14 protruding from both upper and lower surfaces of the primary molding resin portion 19 of the primary molding 16 together.

With the primary molded product 16 set in the secondary molding die 31, the outer surface of the primary molding resin portion 19 accommodated in the accommodation space 33 and the retaining rib 3 are set in the molding space 32.
0 is facing. The chamfered portion 34 is the primary molding resin portion 1
The upper and lower end surfaces of 9 (the surfaces from which the end portions 14A of the terminal fittings 14 project) and the left and right side surfaces are abutted over the entire circumference, whereby the outer surface of the primary molded resin portion 19 of the primary molded product 16 and the molding space 32. A secondary molding cavity 36 is formed which is surrounded by (the inner surface of the secondary molding die 31) and is isolated from the terminal accommodating recess 35. And the cutting part 3
By contacting the upper and lower and left and right surfaces of the primary molding resin portion 19, the leakage of the molten resin injected into the secondary molding cavity 36 into the accommodation space 33 and the terminal accommodation recess 35 is restricted. It In addition, the terminal accommodating recess 35 is not an elongated hole shape aligned with the end portion 14A of the terminal fitting 14,
It has a rectangular shape that is long in the left-right direction so that the ends of the plurality of terminal fittings 14 can be housed together, and the inner wall surface of the terminal housing recess 35 is not in contact with the ends of the terminal fittings 14. .

After the primary molded product 16 is set in the secondary molding die 31 as described above, the molten resin for molding the secondary molding resin portion 37 is injected into the secondary molding cavity 36. The injected molten resin is used in the secondary molding cavity 3
6 into the escape holes 22 and 23, and further into the tray-shaped space 28 on the inner surface of the primary molding resin portion 19. By this secondary insert molding, the secondary molded resin part 37 is molded, and the connector A in which the secondary molded resin part 37 and the primary molded resin part 19 of the primary molded product 16 are integrated is obtained. The primary molded resin portion 19 that protrudes inward from the secondary molded resin portion 37 constitutes the rectangular protrusion 11, and the end portions of the terminal fitting 14 protrude from the upper and lower surfaces of the rectangular protrusion 11.

In the escape holes 22 and 23, the secondary molding resin portion 37 is interposed between the terminal fittings 14 separated by cutting the carrier 15 to isolate the terminal fittings 14 from each other (see FIG. 15). reference). In addition, the secondary molding resin portion 37
The engaging portion 38 formed on the engaging portion engages with the engaging portions 24 and 25 of the escape holes 22 and 23, whereby the secondary molded resin portion 37 is formed.
Is prevented from being separated from the primary molding resin portion 19 to the outside. It should be noted that the secondary molding resin portion 37 may be detached from the primary molding resin portion 19 to the outside even when the retaining rib 30 of the primary molding resin portion 19 is engaged with the retaining groove 39 of the secondary molding resin portion 37. Are prevented (see FIG. 15). Further, the terminal fitting 14 exposed on the inner surface of the first primary molding resin component 20 is covered by the portion of the secondary molding resin portion 37 that has entered the tray-shaped space 28 (FIG. 14). See). Further, the inner surface of the secondary molding resin portion 37 that has entered the tray-shaped space 28 is flush with the inner surface of the frame portion 27 of the primary molding resin portion 19.

As described above, in this embodiment, the projecting region of the end portion 14A of the terminal fitting 14 on the outer surface of the resin molding portion 10, that is, the upper and lower surfaces of the resin molding portion 10 are constituted by the primary molding resin portion 19, The secondary molding resin portion 37 and the secondary molding cavity 36 are arranged in a region separate from the projecting region of the terminal fitting 14, and the secondary molding die 31 is formed.
The chamfered portions 34 are in contact with the upper and lower surfaces of the resin molded portion 10 at positions which are not in contact with the terminal fittings 14. Since the contact areas of the bite-cutting portions 34 on the upper and lower surfaces of the resin molding portion 10 are flat, the contacting portions of the bite-cutting portion 34 on the resin molding portion 10 are also flat and simple. It is not necessary to form a thin hole for fitting the end portion 14A of the terminal fitting 14 in the cut-away portion 34. As described above, in the present embodiment, it is avoided that the structure of the secondary molding die becomes complicated due to the complicated shape of the cut-off portion. Further, since the end portion 14A of the terminal fitting 14 is not subjected to the molding pressure during the secondary insert molding, there is no risk of deformation.

Further, the plurality of terminal fittings 14 are the carrier 15
Since it can be set in the primary insert molding die in the form of the chain terminal 13 connected by, the workability is better than when the terminal fittings 14 are individually set. Moreover, since the cutting of the carrier 15 is performed inside the escape holes 22 and 23, the primary molding resin portion 1 is cut along with the cutting of the carrier 15.
It is not necessary to remove a part of 9 and the material is not wasted. Further, since the secondary molded resin portion 37 is interposed between the terminal fittings 14 separated by cutting the carrier 15, the terminal fittings 14 are isolated from each other.
It is possible to reliably insulate the spaces.

Although the primary molding resin portion 19 is connected to the secondary molding resin portion 37 on a surface of the outer surface of the primary molding resin portion 19 where the outer end of the relief hole 23 is opened, the relief molding holes 22, Since the locking portions 24, 25, and 38 that lock with each other are provided on the 23 and the secondary molding resin portion 37, the separation of the primary molding resin portion 19 and the secondary molding resin portion 37 is reliably regulated. Also, when molding the primary molded resin part of the primary molded product as a single part, even if you try to arrange multiple terminal fittings so that they overlap in the same direction as the penetration direction of the escape hole, Therefore, the mold cannot be opened because the terminal metal fittings interfere with each other, but in the present embodiment, the terminal metal fitting 14 is used in the primary insert molding.
And the primary molding resin components 20 and 21 are integrated to form two primary molding components 17 and 18, and the primary molding components 17 and 18 are in the same direction as the penetration direction of the escape holes 22 and 23. Primary molded product 16
Since one of the primary molding components 17 and 18
In the above, the plurality of terminal fittings 14 do not have to be aligned so as to overlap in the penetrating direction of the escape holes 22 and 23. Therefore, the relief holes 2 are formed in the primary molding resin components 20 and 21.
There is no possibility that the terminal fittings 14 interfere with the molding of the molds 2 and 23 and the mold cannot be opened.

[Other Embodiments] The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention. (1) In the above-described embodiment, the terminal metal fitting is integrated with the primary molding resin portion in the state of the chain terminal in the primary insert molding. However, according to the present invention, the terminal metal fitting not connected by the carrier is formed on the primary molding resin portion. It may be integrated.

(2) In the above embodiment, the primary molded product was provided with a through hole for cutting the carrier. However, according to the present invention, the carrier is molded with the primary molded resin portion without providing a through hole. The carrier may be cut together with the thin portion of the primary molding resin portion so that the carrier overlaps the thin portion. (3) In the above-described embodiment, the escape hole of the primary molded product is provided with the engaging portion for engaging the secondary molded resin portion. However, according to the present invention, the engaging portion is the escape portion in the primary molded resin portion. You may provide in areas other than a hole.

(4) In the above embodiment, the plurality of terminal fittings are arranged so as to overlap in the penetration direction of the escape hole, but according to the present invention, the plurality of terminal fittings do not overlap in the penetration direction of the escape hole. You may arrange. In this case, the primary molded resin component of the primary molded product can be molded as a single part.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment.

2 is a plan view

FIG. 3 is a front view of the chain terminal.

FIG. 4 is a front view of a first primary molding component.

FIG. 5 is a front view of the first primary molding component with the carrier cut.

FIG. 6 is a plan view showing a separated state of the first and second primary molding components.

FIG. 7 is a side view showing a separated state of the first and second primary molding components.

FIG. 8 is a vertical cross-sectional view showing a separated state of the first and second primary molding components.

FIG. 9 is a horizontal sectional view showing a separated state of the first and second primary molding components.

FIG. 10 is a vertical cross-sectional view showing a state in which the first and second primary molding components are assembled into a single primary molding product.

FIG. 11 is a horizontal sectional view showing a state in which the first and second primary molding components are assembled into a single primary molding product.

FIG. 12 is a vertical cross-sectional view of the state where the primary molded product is set in the secondary molding die.

FIG. 13 is a vertical cross-sectional view of the connector as manufactured.

FIG. 14 is a partially enlarged vertical sectional view of the connector.

FIG. 15 is a partially enlarged horizontal sectional view of the connector.

FIG. 16 is a sectional view of a conventional example.

[Explanation of symbols]

A ... Connector 10 ... Resin molding part 13 ... Chain terminal 14 ... Terminal fittings 14A ... End of terminal fitting 15 ... Career 16 ... Primary molded product 17 ... First primary molding component 18 ... Second primary molding component 19 ... Primary molding resin part 20, 21 ... Primary molding resin component 22, 23 ... Escape hole 24, 25 ... Relief hole locking part 31 ... Secondary molding die 34 ... Cutting part 36 ... Secondary molding cavity 37 ... Secondary molding resin part 38 ... Locking part of secondary molding resin part

Claims (5)

[Claims] 1. A primary molded product having a shape in which an end portion of a terminal fitting is projected from an outer surface of a resin molded portion, wherein a primary molded resin portion and the terminal fitting are integrated by primary insert molding. Then, in the secondary insert molding, the chamfered portion provided in the secondary molding die is brought into contact with the outer surface of the primary molded article so that it is surrounded by the outer surface of the primary molded article and the inner surface of the secondary molding die. A secondary molding cavity is formed, and a molten resin is injected into the secondary molding cavity to mold the secondary molding resin portion, and the secondary molding resin portion and the primary molding product are integrated. In the connector manufactured as described above, the protruding region of the end portion of the terminal fitting on the outer surface of the resin molded portion is formed by the primary molded resin portion. 2. In the primary insert molding, a plurality of the terminal fittings are integrated with the primary resin molding part in the form of a chain terminal connected by a carrier, and a region of the primary molding resin part corresponding to the carrier. An escape hole is formed so as to penetrate, and in a state where the terminal fittings are separated by cutting the carrier in the escape hole, in a connector that is secondary insert molded, the terminal separated by cutting the carrier The connector according to claim 1, wherein the metal fittings are separated from each other by the secondary molding resin portion that has entered the escape hole. 3. The primary molding resin portion is connected to the secondary molding resin portion on a surface of an outer surface of the primary molding resin portion where one end of the relief hole is opened, the relief hole and the secondary molding resin portion being connected to each other. The connector according to claim 2, wherein the portion is provided with a locking portion that locks the primary molding resin portion and the secondary molding resin portion to each other so as to restrict the separation of the primary molding resin portion and the secondary molding resin portion. 4. A connector in which a plurality of the terminal fittings are arranged so as to overlap in the same direction as the penetration direction of the escape hole, wherein the primary molded product is formed by primary insert molding with the terminal fittings and a primary molded resin structure. 4. A plurality of primary molding components molded in a form in which the parts are integrated with each other are overlapped in the same direction as the penetration direction of the escape hole. Connector described in. 5. A primary molded product in which a primary molded resin portion and a terminal fitting are integrated by primary insert molding, and in the secondary insert molding, a chamfered portion provided in a secondary molding die is used for the primary molding. A secondary molding cavity surrounded by the outer surface of the primary molded product and the inner surface of the secondary molding die is formed by contacting the outer surface of the product, and a molten resin is injected into the secondary molding cavity. By molding the secondary molded resin part by integrating the secondary molded resin part and the primary molded product, a connector in a form in which the end of the terminal fitting is projected from the outer surface of the resin molded part is formed. A method of manufacturing a connector, characterized in that a protruding region of an end portion of the terminal fitting on the outer surface of the resin molded portion is constituted by the primary molded resin portion.