JP3411900B2 - Molding method of connector integrated case - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a connector-integrated case made of resin for accommodating electric / electronic parts therein.

[0002]

2. Description of the Related Art A connector-integrated case accommodates electric and electronic parts such as a board and a motor therein, and is often used in computers and their peripheral devices. Such a connector-integrated case will be described with reference to FIG. 1 for convenience. The connector-integrated case 10 is shown in FIG.
As shown in (a), the case body 12 and the connector 14 are provided, and a plurality of L-shaped terminal rows 20 a and 20 b are provided from inside the case body 12 via the connector 14 to the case body 12.
It projects to the outside. The electric / electronic parts (not shown) housed inside the case body 12 are connected to the terminals 24a and 24b inside the case body 12, and are connected to other parts through the connector 14. There is. In addition, after the electric / electronic components are housed in the case body 12 of the connector-integrated case 10, the opening of the case body 12 is closed by a lid (not shown).

Such a connector-integrated case 10 is entirely made of resin and has been conventionally made of a metal terminal 24.
After arranging a and 24b in the mold, a molten resin is injected and molded. When molding the connector-integrated case 10, the plurality of terminals 24a and 24b are arranged in the mold in an aligned state. Therefore, the terminal plates 220a and 22 shown in FIG.
0b and the holding die H are used. FIG. 10 shows the terminal plates 220a and 220b and the holding mold H.
10A is a perspective view of the holding mold H and the terminal plates 220a and 220b, and FIG. 10B is a perspective view of the holding mold H and the terminal plates 220a and 220b.
0b is held in a perspective view, FIG.
Holding die H and terminal plates 220a and 220b shown in (b)
FIG. 4 is a perspective view showing a state in which is placed in a mold 400 described later.

Each of the terminal boards 220a and 220b has one
A plurality of elongated cuts are made in a sheet of metal plate and formed into a comb shape, which is bent into an L-shape. A plurality of elongated terminals 240a and 240b formed by the cuts are connected at one end. The pieces 260a and 260b are connected to each other. Ten terminals 240a and 240b are formed on the terminal boards 220a and 220b shown in FIG.
When such terminal plates 220a and 220b are used, it is possible to save the trouble of arranging the plurality of terminals 240a and 240b in a line, and to easily handle the terminals 240a and 240b. In addition, the connecting piece 2 of the terminal plates 220a and 220b
60a and 260b are separated after molding the case, and each terminal 2
40a and 240b are made independent without contacting each other.

The holding die H has the same number of terminal holding holes h as the number of terminals 240a and 240b. After inserting the tip portions of the terminals 240a and 240b into the respective terminal holding holes h, It is placed in the mold 400.

FIG. 11 shows a conventional connector-integrated case 1.
10 is a cross-sectional view of a mold 400 for molding 00 and a holding mold H. FIG. This mold 400 has a first recessed portion.
11A is a cross-sectional view showing a state in which terminals 240a and 240b are arranged on the first mold 420, and FIG. 11B shows the first mold 420 and the second mold 440. FIG. 11C is a cross-sectional view showing a state in which the mold 440 is closed, and FIG. 11C shows a state in which the second mold and the holding mold are removed after the resin is injected into the cavity C formed by the both molds 400. A cross-sectional view, FIG. 11D shows a molded product 10 taken out from the mold 400.
It is sectional drawing of 0. As shown in FIG. 11A, the first mold 420 is provided with a recess 420c that will form the wall of the case body 12, and terminal receiving portions 422a and 422b. For convenience of molding, the first mold 420 is arranged on the lower side.

Terminal receiving portions 422a, 422 of the first die 420
After inserting the connecting pieces 260a and 260b into the 22b so as to be completely immersed therein, the first die 420 and the second die 440 are closed, and as shown in FIG. A cavity C including a portion for holding the terminal is formed. After injecting the molten resin into the cavity C between the two molds 400, as shown in FIG. 11C, the second mold 440 and the holding mold H are removed, and further the molded product is removed from the first mold 420. .

By the way, the terminals 240a and 2 shown in FIG.
40b is a plate-shaped connecting piece 260a, 260b, respectively.
, The terminal receiving portions 422a, 422b of the first mold 420 for receiving the connecting pieces 260a, 260b.
Must be slit-shaped (see FIG. 10 (c)). FIG. 12 shows slit-shaped terminal receiving portions 422a, 422
FIG. 12 is a partially enlarged perspective view of the connector-integrated case molded using the first mold 420 having 22b.
It corresponds to the view seen from the arrow direction of (d). This connector-integrated case, as shown in FIG.
Since resin has entered the gap between a and 240b, it cannot be used as an actual product. This is because the slit-shaped terminal receiving portions 422a, 422b have terminals 240a,
This is because when 240b is inserted, a gap is created between each terminal 240a, 240b and the terminal receiving portion 422a, 422b, and when the resin is injected, the molten resin leaks into this gap.

Therefore, conventionally, as shown in FIG. 13A, the terminal receiving portions 422a and 422 of the first die 420 are formed.
As b, a plurality of holes (terminal receiving holes) 422h, 422h for receiving the terminals 240a, 240b are formed, while the connecting pieces 260a, 260b of the terminal plates 220a, 220b are separated, and the terminals 240a, 240b are separated by the first metal. It was inserted into the terminal receiving holes 422h and 422h of the mold 420, respectively. In addition, as shown in FIG.
The terminals 240 and 240 formed separately from the beginning are used instead of the terminals 20a and 220b, and the ends of the terminals 240 and 240 are held by the holding mold H and the terminal receiving hole 422 of the first mold 420.
In some cases, one was inserted into each h.

[0010]

However, according to the conventional method, the terminals 240a, 240b and 240 are connected to the first mold 420.
The terminals 240a, 2 by using a needle-shaped jig or the like.
Since 40b and 240 must be inserted into the terminal receiving holes 422h of the first mold 420 one by one, there is a problem that mass production cannot be performed because it takes time and labor. In addition, the terminal 240 is inserted into the terminal receiving hole 422h of the first mold 420.
When inserting a, 240b, 240, the terminals 240a,
There is also a problem that 240b and 240 may be bent.

Further, the terminals 240a,
There is a problem that the same number of terminal receiving holes 422h as 240b and 240 must be formed, and the formation of the first mold 420 is troublesome.

[0012]

SUMMARY OF THE INVENTION According to the present invention, a terminal plate in which at least one ends of a plurality of terminals aligned at intervals are connected by a connecting piece, and a plurality of terminals forming a part of a case after molding are formed. Prepare a spacer with a fin that closes the gap between them, insert the fin into the gap between the terminals, insert the connecting piece side of the terminal plate into the slit-shaped terminal insertion portion of the mold, The above problem is solved by a method of molding a connector-integrated case, characterized in that after the molding, the mold is removed and the connecting piece is cut off.

[0013]

According to the method of molding the connector-integrated case of the present invention, since a terminal plate in which a plurality of terminals are connected at least at one end by a connecting piece can be used, the labor for aligning the terminals can be saved. Also, it can be easily attached to the mold. Further, since the fins of the spacers are inserted between the terminals of the terminal plate to hold the terminals, it is difficult for the terminals to bend during mounting to the mold.

[0014]

1 shows a connector-integrated case 10 according to a first embodiment of the present invention, FIG. 1 (a) is a perspective view, and FIG. 1 (b) is b- of FIG. 1 (a). It is a b line sectional view.
The connector-integrated case 10 includes a case-shaped case body 12 and a connector portion 14, and a plurality of L-shaped terminal rows extend from the inside of the case body 12 to the connector portion 14. In the connector-integrated case 10 shown in FIG. 1, two terminal rows 20a and 20b composed of ten terminals are arranged in parallel. Between the two terminal rows 20a and 20b,
A spacer 30 made of an insulating material is interposed and constitutes a part of the case body 12 (see FIG. 1B).

Next, the connector-integrated case 1 shown in FIG.
The molding method of 0 will be described. In the molding method of the present invention, the connector-integrated case 10 is molded by injecting a molten resin into a mold described later and arranged in the mold with a plurality of terminals aligned, as shown in FIG. On the terminal row 2
0a, 20b of the two terminal plates 22a,
22b, the holding die H, and the spacer 30 are used.
FIG. 2 is a perspective view of the terminal plates 22a and 22b, the spacer 30, and the holding mold H. FIG. 2A shows a state in which the terminal plates 22a and 22b and the spacer 30 are attached to the holding mold H.
2 (b) is a state in which the mounting is completed, and FIG. 2 (c) is shown in FIG.
The state which has arrange | positioned the terminal plates 22a and 22b of (b) in the metal mold mentioned later is shown. Similar to the conventional one, the terminal boards 22a, 2
2b is one in which a plurality of elongated L-shaped terminals 24a, 24b aligned with a gap therebetween are connected by connecting pieces 26a, 26b, and the holding mold H has respective terminals 24a, 24b.
terminals 24a, 24b for receiving and holding the ends of b
The same number of terminal holding holes h as that of the terminal holding holes h are formed.

The spacer 30 is integrated with the case after molding, is made of an insulating material, and has a plurality of fins 32 on both side surfaces. Grooves 34 are formed between the fins 32. As shown in FIG. 2A, the open end side terminal of the first terminal plate 22a is inserted into the terminal holding hole h of the holding die H, and the spacer 3 is provided outside the first terminal plate 22a.
After arranging 0, the second terminal board 22 is provided outside the spacer 30.
b is brought into contact and the open end side terminal is similarly inserted into the terminal holding hole h of the holding die H (see FIG. 2B). In addition, the length of the spacer 30 is, as shown in FIG.
The fins 32 are of such a length that they are fitted into the gaps between the terminals in a state where the gaps between the terminals are left between the fins 32 and the terminals 6a and 26b, and are brought into contact with the corner portions of the terminal plate 22b. That is, the part which becomes a terminal separated after molding is left. Figure 2
As shown in (b) and FIG. 2 (c), the first terminal board 22
The terminals a and the terminals 24a and 24b of the second terminal plate 22b are fitted into the grooves 34 inside and outside the spacer 30.

FIG. 3 is a connector-integrated case 1 according to the present invention.
Mold 40 for molding 0, terminal plates 22a, 22b,
3 is a cross-sectional view of a holding die H. FIG. This mold 40 is the first
It is composed of a mold 42 and a second mold 44, and FIG. 3A is a sectional view showing a state in which two terminal plates 22a and 22b are arranged on the first mold 42, and FIG. 3B is a first mold. 42 and the second mold 44 are cross-sectional views in a state where they are closed, FIG. 3C shows that after the resin is injected into the cavity formed by the two molds 40, the second mold 44 and the holding mold H. Fig. 3 is a cross-sectional view of the state with the
FIG. 3D is a sectional view of the molded product 10 taken out from the mold 40.

As shown in FIG. 3A, the first mold 42 is provided with a recess 42c forming the wall of the case body 12 and slit-shaped terminal insertion portions 422a, 422b. The second mold 44 is provided with the convex portion 440, and when the first mold 42 and the second mold 44 are closed, the convex portion 4 is formed.
40 presses the terminals 24a, 24b and presses the terminals 24a, 24b.
b is pushed into the terminal insertion portions 422a and 422b of the first mold 42. Convex portion 440 of second mold 44
May have a horizontally long shape so as to press the terminals 24a and 24b as a whole, or may have a columnar shape so as to press a part of the terminals 24a and 24b. Alternatively, a second mold (not shown) having no convex portion may be used. Molten resin is injected into the cavity C formed between the first mold 42 and the second mold 44, and then the second mold 44 and the holding mold H as shown by arrows in FIG. Remove. When the holding mold H is removed, the terminals on the open end side are exposed.

FIG. 4 shows the connector-integrated case 10 in the state of FIG. 3 (c), FIG. 4 (a) is a perspective view, and FIG. 4 (b).
FIG. 4 is a partially enlarged perspective view of FIG. As shown in the figure, in this state, the connecting pieces 26 of the terminal plates 22a and 22b are connected.
a and 26b are not separated. Terminal boards 22a, 22b
The connecting pieces 26a, 26b of the terminal insert portion 4 of the first mold 42.
Since the first mold 42 is inserted into the terminals 22a and 422b, the terminal insertion portions 422a and 422b of the first mold 42 are formed in a slit shape, but the gaps between the slit-shaped terminal insertion portions 422a and 422b and the terminals 24a and 24b are different from each other. , The fins 32 of the spacer 30 are closed, respectively, and the first mold 4
The space between the terminals 24a and 24b in 2 is the spacer 3
Since it is closed at the lower end surface of 0, even if the molten resin is injected, the molten resin does not leak between the terminals 24a and 24b. Connection piece 26 of terminal plates 22a and 22b shown in FIG.
a and 26b are cut off after molding the resin portion of the connector-integrated case 10, and at that stage, the connecting pieces 26a and 26b
The terminals connected to 26b are separated from each other, and two terminal rows 20a and 20b shown in FIG. 1 are arranged in parallel.

As shown in FIG. 5, the spacer provided between the terminal plates 22a and 22b may be L-shaped. 5 (a) shows a spacer 30 'having fins 32' formed only on both side surfaces, and FIG. 5 (b) shows a spacer 3 having fins 32 "formed on both side surfaces and upper and lower surfaces.
It is a perspective view of 0 ", and when these spacers 30 and 30" are arrange | positioned between the terminal boards 22a and 22b, each fin 3
Terminals 24a and 24b are fitted and held between 2'and 32 ". In these drawings, reference numeral 3
4 ', 34 "indicate the grooves between the fins 32', 32".

FIG. 6 is a view for explaining a method of molding the connector-integrated cases 10 ', 10 "using the spacers 30', 30" of FIG. 5, and FIG. 6 (a) shows two sheets. Terminal plates 22a, 22b and spacers 30 ', 30 "
6B is a cross-sectional view showing a state in which the terminal plates 22a and 22b of FIG. 6A are arranged in the first mold 42 and the second mold 44. FIG. 6C is a sectional view of the molded product 10 ', 10 "taken out from the mold 40. Like the first embodiment, the slit-shaped terminal insertion provided in the first mold 42 is inserted. By inserting the terminal plates 22a and 22b into the parts 422a and 422b and closing the first mold 42 and the second mold 44, the molten resin is injected into the cavity formed by both molds 40. The connector-integrated cases 10 ', 10 "are molded.

Even when these spacers 30 ', 30 "are used, as shown in FIG. 4B, the slit-shaped terminal insertion portions 422a, 422b of the first mold 42 and the terminals 24 are formed.
Since the gaps between a and 24b are closed by the fins 32 'and 32 "of the spacers 30' and 30", respectively, even if the molten resin is injected, the molten resin leaks between the terminals 24a and 24b. There is no.

In the connector-integrated case of the present invention,
Only one terminal row may be provided. In FIG. 7, the terminal row is 1
FIG. 7A shows a spacer 30s, a terminal plate 22, and a holding die used when molding the row of connector-integrated cases 10s, and FIG. 7A is a perspective view of the spacer 30s.
Is a perspective view showing a state in which the terminal plate 22 is inserted into the holding mold Hs,
FIG. 7C is a perspective view of the terminal plate 22 of FIG. 7B held in the mold 40. As shown in FIG. 7B, the end of the terminal 24 is inserted into the terminal holding hole h of the holding die Hs, the spacer 30s is arranged between the terminal plate 22 and the holding die Hs, and the groove 34s of the spacer 30s. Each terminal 24 is fitted in. Thereafter, as shown in FIG. 7C, the terminal plate 22 is inserted into the terminal insertion portion 422s of the first mold 42.

FIG. 8 is a view for explaining a method of molding the connector-integrated case 10s by using the spacer 30s shown in FIG. 7, and FIG. 8 (a) shows a holding plate for holding the terminal plate 22 and the spacer 30s. FIG. 8B is a cross-sectional view of a state in which the terminal plate 22 of FIG.
2 and a cross-sectional view of the state in which it is placed in the second mold 44, 8
(C) is a cross-sectional view of the molded product 10s taken out from the mold 40. Also in this case, the terminal plate 22 is arranged in the mold 40,
Although the molten resin is injected into the cavity C, the first mold 42
Since the gaps between the slit-shaped terminal insertion portion 422s and the terminal 24 are closed by the fins 32s of the spacer 30s, the molten resin does not leak between the terminals 24. Since the gap between the terminals in the first mold 42 is closed by the lower end surface of the spacer 30s, even if the molten resin is injected, the molten resin does not leak between the terminals.

Next, FIG. 9 is a view for explaining a method of molding the connector-integrated case (see FIG. 1A) according to the second embodiment of the present invention, and FIG. FIG. 9B is a perspective view of the terminal plates 22Ma and 22Mb, the spacer 30M, and the holding mold HM. FIG. 9B is a cross-sectional view of the holding mold HM with the terminal plates 22Ma and 22Mb and the spacer 30M attached. ) Is the connector integrated case 1 after molding
It is a perspective view of 0M. As shown in FIG. 9A, the terminal plates 22Ma and 22Mb used in this embodiment are the terminals 2
Connecting portions 26Ma, 2 are provided at both ends of 4Ma, 24Mb, respectively.
It has 6 Mb. The spacer 30M has an L-shape and has a plurality of fins 32M on both side surfaces and upper and lower surfaces.
Is formed, that is, the same as the spacer shown in FIG. A slit-shaped terminal holding portion S is formed on the holding mold HM.

The first terminal plate 22Ma and the second terminal plate 22
Spacer 30M is arranged between Mb and both terminal boards 22M
One of the connecting pieces 26Ma and 26Mb of a and 22Mb is inserted into the slit-shaped terminal holding portion S provided in the holding die HM. The other connecting piece 26Ma, 26Mb is inserted into the terminal insertion portion of the first mold (not shown), the first mold and the second mold are closed together, and the inside of the cavity formed by both molds is closed. After injecting the resin, the molded product 10M is removed from the mold (see FIG. 9C). After that, the terminal boards 22Ma, 22M
When the connecting pieces 26Ma and 26Mb of b are cut off, at that stage, the terminals 24Ma and 24Mb connected to the connecting pieces 26Ma and 26Mb are separated from each other.

As in this embodiment, connecting pieces 26 are provided at both ends.
A holding die HM provided with terminal plates 22Ma and 22Mb including Ma and 26Mb, and a slit-shaped terminal holding portion S.
Is used to hold the terminal plate 22Ma, 22Mb holding mold H
Insertion into M becomes easier. Also, the terminal board 22M
a, 22Mb and the holding die HM are attached to the first die, one end surface of the spacer 30M has a holding die H.
Since the other end face of the holding die HM is in contact with the first die, the slit-shaped terminal insertion portion S and the terminal 2 of the holding die HM.
The gaps between 4 Ma and 24 Mb, and the gaps between the slit-shaped terminal holding portion of the first mold and the terminals are closed by the fins 32M of the spacer 30M.
The molten resin does not leak between 4 Ma and 24 Mb.
Since the gap between the terminals in the first mold and the holding mold is closed by each end face of the spacer, even if the molten resin is injected, the molten resin does not leak between the terminals.

In the above, the case where the number of terminal rows is 1 and 2 in the connector-integrated case has been described. However, even in the case of the connector-integrated case in which the number of terminal rows is 3 or more, by using an appropriate spacer, It can be molded by the same method as described above. Moreover, although the linear terminal row has been described, a connector-integrated case having a curved terminal row can be formed by using an appropriate terminal plate, spacer, and holding die. The shape of the terminal plate is not limited to the L shape.

[0029]

According to the method of molding a connector-integrated case of the present invention, at least one end of a terminal plate, which is connected by a connecting piece, may be inserted into a slit-shaped receiving portion provided in the mold. As a result, the terminal plate can be easily attached to the mold, and the molten resin injected into the cavity of the mold can be prevented from leaking into the gaps between the terminals.

Further, since the fins of the spacers are inserted between the terminals and held by the fins while the terminal plate is held by the holding mold, the terminals are difficult to bend when mounted on the mold. .

[Brief description of drawings]

FIG. 1 shows a connector-integrated case of the present invention.
1A is a perspective view, and FIG. 1B is a cross-sectional view taken along the line bb of FIG.

2 is a perspective view of a terminal plate, a spacer, and a holding mold used when molding the connector-integrated case of FIG. 1, and FIG. 2 (a) shows the terminal plate and the spacer as a holding mold. FIG. 2 (b) shows a state in which the holding mold having the terminal plate and the spacer attached is arranged in the mold, and FIG. 2 (c) shows the connecting piece of the terminal plate in the mold in FIG. 2 (b). Inserted into the terminal insertion part of.

FIG. 3 shows a mold and a holding mold for molding the connector-integrated case of FIG. 1, and FIG. 3 (a) is a cross-sectional view showing a state where the terminal and the holding mold are attached to the first mold. FIG. 3B is a cross-sectional view showing a state in which the first mold and the second mold are closed, and FIG. 3C is a state in which the second mold and the holding mold are removed after the resin is injected into the cavity. 3D is a sectional view of FIG.
Sectional drawing of the molded connector integrated type case.

4A and 4B show the connector-integrated case shown in FIG. 3D, FIG. 4A is a perspective view, and FIG. 4B is a partially enlarged perspective view of FIG. 4A.

FIG. 5 shows a spacer having an L-shaped cross section, which is used in the method for molding a connector-integrated case according to the present invention.
FIG. 5A is a perspective view of a spacer having fins formed on a side surface, and FIG. 5B is a perspective view of a spacer having fins formed on a side surface and an upper surface.

6 is a diagram for explaining a method of molding a connector-integrated case using the spacer shown in FIG. 5, and FIG. 6 (a) is a diagram showing a spacer and a terminal plate shown in FIG. FIG. 6B is a cross-sectional view of the state
FIG. 6 is a cross-sectional view of the terminal plate of FIG.
(C) is sectional drawing of the molded product taken out from the metal mold | die.

7A and 7B show a spacer, a terminal plate, and a holding mold used when molding a connector-integrated case having one row of terminals. FIG. 7A is a perspective view of the spacer, and FIG. Is a perspective view of the holding mold with the terminal plate and the spacer attached,
FIG. 7C is a perspective view showing a state where the terminal plate of FIG. 7B is attached to a mold.

FIG. 8 is a view for explaining a method of molding a connector-integrated case using the spacer, the terminal plate, and the holding mold of FIG. 7, and FIG. 8 (a) shows the terminal plate and the spacer attached. FIG. 8B is a sectional view of the holding mold.
FIG. 8 is a cross-sectional view of the terminal plate of FIG.
(C) is sectional drawing of the molded product taken out from the metal mold | die.

9A and 9B are views for explaining a method for molding a connector-integrated case according to a second embodiment of the present invention, FIG. 9A being a perspective view of a terminal plate, a spacer, and a holding die; FIG. 9B is a cross-sectional view showing a state in which a terminal plate and a spacer are attached to a holding mold, and FIG. 9C is a perspective view of a connector-integrated case after molding.

FIG. 10 shows a terminal plate and a holding mold used when molding a conventional connector-integrated case, and FIG.
Is a perspective view of the terminal plate and the holding mold, FIG. 10 (b) is a perspective view of the holding mold with the terminal plate attached, and FIG. 10 (c) is FIG.
The perspective view which shows the state which arrange | positions a 0 (b) terminal board in a metal mold | die.

FIG. 11 shows a mold and a holding mold for molding a conventional connector-integrated case, and FIG. 11A is a cross-sectional view showing a state in which the holding mold is arranged on the first mold. FIG. 11B is a cross-sectional view of the molds in a closed state, and FIG. 11C is a cross-sectional view after the resin is injected into the cavity formed by the molds.
FIG. 11 is a sectional view showing a state in which the upper mold and the holding mold are removed.
(D) is sectional drawing of the molded product taken out from the metal mold | die.

FIG. 12 is a partially enlarged perspective view of FIG. 11 (d) viewed from the direction of the arrow.

FIG. 13 shows a conventional terminal, FIG. 13 (a) is a perspective view showing a state in which a terminal having no connecting piece at its end is inserted into a terminal insertion portion of a mold, and FIG. The perspective view of the formed some terminal.

[Explanation of symbols]

10, 10 ', 10 ", 10s, 10M: Connector-integrated cases 22a, 22b, 22, 22Ma, 22Mb: Terminal plates 24a, 24b, 24, 24Ma, 24Mb: Terminals 26a, 26b, 26, 26Ma, 26Mb: Connection Piece 30, 30 ', 30 ", 30s, 30M: Spacer 32, 32', 32", 32s, 32M: Fin 40: Mold 422a, 422b: Terminal insertion part H, Hs, HM: Holding mold h: Terminal Holding hole S: Terminal holding part

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B29C 45/00-45/84

Claims (5)

(57) [Claims] 1. A terminal plate in which at least one ends of a plurality of terminals aligned at intervals are connected by a connecting piece, and a fin which forms a part of a case after molding and closes a gap between the plurality of terminals. The spacer is prepared, the fin is fitted into the gap between the terminals, the connecting piece side of the terminal plate is inserted into the slit-shaped terminal insertion portion of the mold, and the mold is removed after molding with molten resin. A method for molding a connector-integrated case, which comprises cutting the connecting piece. 2. The method for molding a connector-integrated case according to claim 1, wherein both ends of the plurality of terminals are connected by connecting pieces, and each connecting piece side is inserted into a slit-shaped terminal insertion portion of a mold. 3. The method for molding a connector-integrated case according to claim 1, wherein the spacer is arranged between the plurality of terminal plates. 4. The method for molding a connector-integrated case according to claim 1, wherein the terminal plate is L-shaped. 5. The method for molding a connector-integrated case according to claim 1, wherein the spacer is L-shaped.