JP2009099419A - Method of manufacturing case for circuit board loading with connector part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a case for circuit board loading, which has a structure integrally resin-molding a connector part at an opening part of the sidewall of a case body, equipped with a part protruded into the case and a space part against a bottom plate out of terminal fittings covered in the connector part without the need of complicated works of installation and removal of a core. <P>SOLUTION: In forming the connector part 11, a core 161 to be arranged at a site corresponding to a space site G as an undercut part is to be provided at a first molding die 101 in free sliding and in a state biased by an elastic means in a direction pressed out from the space site G. A core-driving slider 181 capable of pressing the core 161 onto the space site G is provided at the first molding die 101, and the manufacturing is carried out by a molding die device equipped with a core driving mechanism so structured that the core 161 is pressed into the space site G as the slider 181 progresses and pressed out as the same retreats. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a circuit board mounting case with a connector portion, and more specifically, a circuit with a connector portion in which a resin connector portion is insert-molded in a state where a terminal fitting is wrapped in an opening portion of a side wall of the case body. The present invention relates to a method for manufacturing a substrate mounting case.

  FIG. 8 is a schematic configuration perspective view showing an example of such a circuit board mounting case with a connector portion (hereinafter also referred to as a case with a connector portion or simply a case), and FIG. 9 is a sectional view for explanation thereof. FIG. The case 1 has a rectangular parallelepiped tray-shaped metal case body 2 that opens upward, and a resin connector 11 formed integrally with an opening 7 provided in a side wall 5 around the bottom plate 3. It is made up of. A part of the terminal fitting 21 is wrapped in the connector 11, and each end thereof protrudes (exposes) inside and outside the case body 2, and a circuit mounted in the case 1 The substrate 31 and the end of the terminal fitting 21 protruding into the case 1 are connected. In such a case 1, the case body 2 and the terminal fitting 21 are positioned and loaded (placed) in the mold as inserts, and resin is injected (filled) into the cavity (space) corresponding to the connector portion 11. Manufactured by injection molding (Patent Document 1). In the case 1 shown in FIGS. 8 and 9, the opening portion 7 of the side wall 5 is illustrated as being cut out from the top, but this is the same even if it is an independent hole shape. Manufactured. In addition, in the case 1 shown in FIGS. 8 and 9, the connector portion 11 is formed only in one (left side) opening 7 for explanation.

  By the way, in the case 1 of FIG. 9, the tip portion 21 a in the case 1 of the terminal fitting 21 extends toward the open side (upper view) of the case 1. Of the connector part 11 that wraps the terminal fitting 21, the part 11 a in the case 1 is in contact with the bottom plate 3 of the case body 2, and the undercut is the same as the inner surface of the side wall 5 of the case body 2. There is no part to be a part. Therefore, in such a case 1 with a connector portion, when the connector portion 11 is insert-molded, the case body 2 is basically sandwiched with the bottom plate 3 sandwiched between the upper and lower sides of the drawing except the outside of the connector portion. Two molds that close together are used. That is, except for the core part necessary for molding the outer portion of the side wall 5 of the case 1 in the connector part 11, the connector part 11 is fitted to the inner surface of the case body 2 to form the connector part 11 on the inner surface side. A forming die (also referred to as a first forming die), and a forming die (also referred to as a second forming die) that is fitted to the outer surface of the case body 2 and forms a part of the connector portion 11 on the outer surface. ) Can be molded by using two molds (molds) that are closed (or opened) in a direction to sandwich the bottom plate 3 of the case 1.

On the other hand, the case 1 shown in FIG. 10 is the same as the case 1 shown in FIGS. 8 and 9, but the case main body 2 is the same. The shape and structure of the connector part 11 are different. That is, in the case 1 shown in FIG. 10, a portion 21 b of the terminal fitting 21 that protrudes into the case 1 has a U shape, and a space is formed between the protruding portion 21 b and the bottom plate 3 of the case body 2. It differs in that there is a part (void) G. 10 exemplifies a case where the space portion G exists between the protruding portion 21b and the resin (resin integrally connected to the connector portion) 11c on the bottom plate 3 of the case main body 2. When the part 21b protruding into the case 1 and having the space part G between the terminal plate 21 and the bottom plate 3 is molded (manufactured) by the insert method as in the case 1, The protruding portion 21b of the terminal fitting 21 is an undercut portion. Therefore, if this is to be punched out in the same manner as in the case of the case of FIG. 9, the mold naturally interferes with the protruding portion 21b, so that such molding and punching cannot be performed. . For this reason, in such a case 1, it is necessary to detachably attach a core (for example, a nesting or placing piece), which is a separate mold part, to a portion corresponding to the undercut portion in the mold. There is.
Japanese Patent Laid-Open No. 10-74560

  Therefore, the case 1 having this structure is manufactured as shown in FIGS. In the figure, the bottom plate 3 of the case 1 is shown to be on the top. For example, the terminal fitting 21 is positioned and loaded (arranged) on the first mold 101 shown in FIG. 11A as shown in FIG. 11B, and as shown in FIG. The core 61 is positioned and loaded (arranged) in a portion (undercut portion) that forms a space portion G between the portion 21 b protruding into the case 1 and the bottom plate 3 side of the case 1. And as shown to the figure D, the case main body 2 is covered. Then, as shown in FIG. E, the second mold 201 is closed in the first mold 101. In addition, 205 in the same figure E is a core type | mold which shape | molds the connector part 11 grade | etc., On the case 1 outer side. In such a mold closed state, resin is injected (filled) into a cavity (space) K formed corresponding to the connector portion 11.

  By doing so, as shown in FIG. 12-F, the connector portion 11 made of resin is formed integrally with the case body 2 so as to enclose the terminal fitting 21. Then, after cooling and solidifying the resin, in order to take out the formed case (molded body) 1 with a connector portion, the second molding die 201 is opened as shown in FIG. Thus, the molded body 1 is taken out from the first mold 101 together with the core 61. Thereafter, as shown in FIG. I, the core 61 is taken out from the molded body 1 and taken out. That is, as in the case 1 shown in FIG. 10, the portion 21 b of the terminal fitting 21 that protrudes into the case 1 is formed in the opening portion 7 of the side wall 5 of the case body 2 by the insert method. In the case of the case 1 in which an undercut portion is generated between the case body 2 and the bottom plate 3 of the case body 2, in the conventional manufacturing method, the core 61, which is an independent mold part, is arranged in the mold for each case 1 molding. And a step of removing the core 61 from the removed molded body (case 1) after molding, respectively. For this reason, there existed a problem that a process thru | or an operation | work became complicated and complicated, and manufacturing efficiency was bad. In addition, since the core 61 is arranged so as to contact the terminal fitting 21, the core 61 is smoothly removed from the first mold 101 together with the molded case 1 after the mold is opened, for example, in the handling process. When the core 61 is not separated or when the core 61 cannot be smoothly removed from the molded body 1, the terminal fitting 21 may be damaged such as deformation.

  The present invention has been made in view of such problems, and in the case of a structure in which the connector part is integrally resin-molded in the opening of the side wall of the case main body, the terminal metal fitting enclosed in the connector part is the case. An object of the present invention is to provide a method that can be efficiently manufactured without requiring steps or operations for installing or removing a core even if there is a space portion between a portion protruding inward and a bottom plate.

In order to achieve the above object, the manufacturing method according to claim 1 is a state in which at least a part of the terminal fitting is wrapped in an opening provided on a side wall of a case body having a side wall erected on the periphery of the bottom plate. The resin connector part is formed integrally with the case body and the terminal fitting as an insert product, and has a space portion between the portion protruding from the case of the terminal fitting and the bottom plate. A circuit board mounting case with a connector,
The case body and the terminal fitting are inserted into both molds of the first mold that forms the side that fits the inner surface of the case body and the second mold that forms the side that fits the outer surface of the case body. In a state where it is positioned and loaded as a product, both molds are closed with the bottom plate sandwiched between them,
In this closed state, a resin is injected into the cavity for the connector part formed in both molding dies, so that at least a part of the terminal fitting is wrapped, and the connector is connected to the opening in the case body. In the method of manufacturing a circuit board mounting case with a connector part by integrally forming the part,
A core disposed in a portion corresponding to the space portion to be an undercut portion in the formation of the connector portion;
The circuit board mounting case with the connector portion formed after the mold opening is slidable and urged by elastic means in the direction of being pushed out from the space portion so that it can be taken out from the first mold. While being provided in the first mold,
A core driving slider capable of pressing the core into the space portion is provided in the first mold, and the core is moved forward relative to the first mold so that the core moves to the space portion. Manufactured by a mold apparatus having a core drive mechanism configured such that the core is pushed out of the space portion by being pushed back into the core mold and the core drive slider is moved backward relative to the first mold. It is characterized by.

  In the first aspect of the invention, “the core driving slider advances relative to the first mold” means that when the first mold does not move (is fixed), the core driving slider is It refers to sliding with respect to the first mold, and conversely, when the core driving slider does not move (is fixed), it means that the first molding mold slides with respect to the core driving slider. In addition, both of the core driving slider and the first molding die move (slide) so that the core is pushed into the space.

  In the first aspect of the invention, “the core driving slider moves backward relative to the first mold” means that the core driving slider is moved when the first mold does not move (is fixed). This means that the slider slides with respect to the first mold, and conversely, when the core drive slider does not move (is fixed), the first mold slides with respect to the core drive slider. In addition, both the slider for driving the core and the first molding die move (slide) so that the core is pushed out from the space portion. Furthermore, in the invention of claim 1, regarding the core driving slider, "relatively forward" and "relatively reverse" are the cases where the first mold is not moved (fixed), They are used properly to distinguish the direction of movement of the core driving slider. In the following, it is also simply referred to as “forward” or “backward”.

  The manufacturing method according to claim 2, wherein the core driving slider is provided so as to be slidable relative to the first mold in a direction intersecting with a sliding direction of the core. A manufacturing method of a case for mounting a circuit board with a connector according to Item 1.

  According to a third aspect of the present invention, the slider for driving the core is provided so as to be slidable relative to the first mold in the mold closing direction and mold opening direction of the first and second molds. A method for manufacturing a circuit board mounting case with a connector portion according to claim 1 or 2.

  The manufacturing method according to claim 4, wherein the core is provided in the first mold in a state in which the core is slidable along the bottom plate and is urged by elastic means in a direction of being pushed out from the space portion. It is a manufacturing method of the case for circuit board mounting with a connector part of any one of Claims 1-3 characterized by these.

  In the manufacturing method of the present invention, when a core driving slider (hereinafter also simply referred to as a slider) is slid and is in a retracted position (position when relatively retracted), the core is pushed out from the space portion. The terminal fitting is positioned and loaded at a predetermined position of the first molding die that is to be fitted to the inner surface of the case body, and the slider is advanced by a predetermined stroke (relatively advanced), whereby the core is moved by a predetermined amount, It is pushed into the space part (hereinafter, such a movement of the core is also referred to as advance). Next, the case body is positioned and loaded on the first mold, and the first mold and the second mold are closed. And resin is inject | poured in the cavity for connector parts formed by mold closing. The core may be pushed into the space part after the case body is positioned and loaded on the first mold or after the mold is closed. In the following description, unless otherwise specified, the present invention and the embodiment thereof will be described on the assumption that the core driving slider moves forward or backward with respect to the fixed first mold.

  After the resin injected into the cavity is solidified, the first mold and the second mold are opened, and the slider is retracted by a predetermined stroke (relatively retracts). Then, the core is pushed out from the space portion by the urging force of the elastic means (hereinafter, such movement of the core is also referred to as retreat). Thereby, the formed circuit board mounting case (molded body) with the connector portion can be taken out alone. Note that the molded body may be taken out by retracting the slider by a predetermined stroke to retract the core by a predetermined amount, then opening the mold, and taking it out.

  As described above, in the method for manufacturing a circuit board mounting case with a connector portion according to the present invention, unlike the conventional manufacturing method, a core, which is an independent mold part, is separately positioned and loaded in the first molding die. There is no need to arrange the case main body on the terminal fitting before positioning and loading. Moreover, the operation | work which removes the core from between the terminal metal fitting and bottom plate in the molded object taken out by opening the mold is not required. That is, according to the manufacturing method of the present invention, since the process or operation of installing and removing the core as in the conventional case is not required, the manufacturing efficiency of the case can be increased accordingly. In addition, according to the manufacturing method of the present invention, when the slider is retracted, the core is retracted by the elastic means, and only when the slider is advanced, the core is pushed into the portion corresponding to the space portion that becomes the undercut portion. Since the driving mechanism is provided, the structure of the mechanism is not complicated. Therefore, there is an effect that the circuit board mounting case with the connector portion can be efficiently manufactured by the molding die device having a simple configuration. In addition, the opening part of the side wall in the case main body which makes this invention may be notched so that it may be cut from the opposite side to a baseplate, and the thing of an independent hole shape may be sufficient as it.

  Embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5 and FIG. However, since the case 1 to be manufactured is the same as that shown in FIG. 10 described above, the detailed description thereof is omitted, but as described above, the case main body 2 is a rectangular parallelepiped tray that opens upward. It has a shape, for example, made of aluminum, magnesium, or an alloy thereof, and is substantially thinly manufactured by pressing or die casting. Moreover, although the opening part 7 for forming the connector part 11 is provided in the side wall 5 which opposes, in order to simplify description, below, it demonstrates as what forms the connector part 11 in the one side. Note that an ear piece (flange portion) provided in a protruding shape on the open side of the side wall 5 in the case body 2 is an attachment portion of the case 1. Moreover, although the opening part 7 of the side wall 5 in the case main body 2 shown in FIGS. 8-10 illustrates what was formed in the notch shape from the top, the opening part 7 in this invention is a thing of an independent hole shape. There may be.

  First, the mold apparatus used in this example manufacturing method is demonstrated based on FIGS. The mold apparatus includes a first mold (mold) 101 that is closed with each other and fitted to the inner surface of the case body 2, and a second mold that is fitted to the outer surface of the case body 2 ( Mold) 201 as a main component. Of these, the first mold 101 is attached as a lower mold in this example on a fixed plate (not shown) in the mold apparatus so as to be convex upward (convex portion), and the second mold 201 is an upper mold. It is attached to a movable platen (not shown) in the mold apparatus so as to form a concave (concave) downward. However, among the molds, the core mold 205 for molding the second mold 201 and the connector portion 11 outside the case 1 other than the first mold (including the core and the core driving slider) 101 is a conventional one. And basically the same. Therefore, the description is omitted as appropriate.

  In the first mold 101, the substantially flat top surface 103 of the convex portion 102 is in contact with the bottom plate 3 inside the case main body 2, and the outer peripheral surface 105 of the convex portion 102 is on the inner surface of the side wall 5 of the case main body 2. The shoulder surface 107 of the convex portion 102 is in contact with an end portion of the side wall 5 of the case body 2 that is separated from the bottom plate 3. Basically, the shoulder surface 107 of the convex portion 102 serves as a mold closing surface in contact with the mold closing surface of the second mold 201. Of the outer peripheral surface 105 of the convex portion 102 and the top surface 103, the portion for molding the cavity corresponding to the connector portion 11 (the upper left portion in FIG. 1 of the first molding die 101) In order to form a cavity, it is recessed so as to be separated by a predetermined amount. Further, a recessed portion 109 for positioning and loading the terminal fitting 21 to be inserted is provided at a predetermined position on the outer peripheral surface 105 and the top surface 103 of the convex portion 102, and the top surface 103 includes the inside of the case 1 in the terminal fitting 21. A terminal fitting insertion hole 111 is provided perpendicular to the top surface 103 so that a straight line portion including the tip of the protruding portion (U-shaped portion) 21 b protruding to the top is inserted.

  On the other hand, a hole is provided in the first molding die 101 in a direction perpendicular to the top surface 103, and a space that becomes an undercut portion in the formation of the connector portion 11 in the case 1 in the hole. The core 161 arranged at the site corresponding to the site G is provided as follows. That is, as shown in FIG. 1, the core 161 is guided by a guide (not shown) along the top surface 103 of the convex portion 102 of the first mold 101, and is slidable left and right in FIG. Yes. However, the core 161 is integrally provided with a driving inclined portion 163 on the right side of the first molding die 101 on the right side in the drawing (lower side in the drawing) on the side away from the top surface 103 of the convex portion 102. Then, in the illustrated lower end portion 164 connected to the driving inclined portion 163, the core 161 is always urged rightward in the drawing by the elastic force through, for example, the coil spring 171 (FIG. 1, FIG. 1). 2). In addition, the core 161 has a shape and a size in which the tip portion 161a occupies the space portion G when the core 161 is moved forward by a predetermined stroke S1 in the left direction in FIG. 1 (see FIG. 3). . When the coil spring 171 is retracted to the right (withdrawn from the space part G), the terminal fitting 21 is positioned and loaded on the first molding die 101 without being interfered with the core 161, or It is set so that it can be taken out (see FIGS. 1 and 2). Note that the upper surface 161 b of the core in FIG. 1 is set to be flush with the top surface 103 of the convex portion 102.

  On the other hand, on the inner side of the first mold 101 and below the core 161, a slider 181 having an inclined portion 182 in contact with the driving inclined portion 163 of the core 161 is formed via the guide means 185. The mold is disposed so as to be slidable in the mold closing direction and the mold opening direction (vertical direction in FIG. 1). The slider 181 is set to slide by a predetermined stroke S2 with an air cylinder (not shown), for example. Thus, the slider 181 is slid by a predetermined stroke S2 so as to push the slider 181 upward from the retracted position (position in FIG. 1) with the air cylinder, so that the inclined portion 182 is inclined for driving the core 161. When the core 161 hits the part 163 and is pushed by a predetermined stroke S1 from the position where the core 161 is pushed out by the coil spring 171 (position in FIG. 1) to the left in the lateral direction, the core 161 is moved forward to the position shown in FIG. On the other hand, when the air cylinder is driven from that state and the slider 181 is slid (retracted) to the original position in the downward direction in the figure, the core 161 is automatically pushed out of the space part G by the elasticity of the coil spring 171. It slides to the right in the figure, and is configured to return to the original position before pushing (advance).

  Note that the stroke S2 for sliding the slider 181 upward in the figure is set to an amount that the left end tip 161a of the core 161 reaches a predetermined position in the back of the space part G. This is done by hitting a convex portion 187 provided on 181 to a stopper 190 provided on the first mold 101 (see FIG. 3). Further, the stroke S2 for sliding the slider 181 downward in the figure is such that the core 161 is pushed out of the space part G by the coil spring 171 so that the left end position of the core 161 is covered with the tip of the terminal fitting 21 inside the case 1. It is set to be a position that does not touch. That is, according to the core drive mechanism of this embodiment, when the slider 181 slides in the drawing, the core 161 is pushed by a predetermined amount S1 against the coil spring 171 to the left in the drawing by the action of the inclined cam. In the formation of the connector part 11 in the case 1, it is pushed into a part corresponding to the space part G to be an undercut part. On the other hand, when the slider 181 slides downward in the drawing, the core 161 is automatically pushed out from the portion corresponding to the space portion G by the urging force of the coil spring 171.

  The second mold 201 has a recess 202 that is a downward recess so as to fit and contact the bottom plate 3 of the case body 2 and the outer surface of the side wall 5. However, the cavity for forming the cavity corresponding to the connector portion 11 is recessed so as to be separated from the outer surface of the case body 2 by a predetermined amount in order to form the cavity. Note that reference numeral 205 in FIG. 3 denotes a core mold that molds the connector portion 11 and the like outside the case 1 and is provided so as to slide to the left and right in FIG.

  Next, the process of manufacturing the case 1 with the mold apparatus provided with such a core drive mechanism will be described with reference to FIGS. As shown in FIGS. 1 and 2, when the mold 181 is open, the slider 181 is in the retracted position and the core 161 is also retracted, as shown in FIG. The terminal fitting 21 which is an insert product is positioned and loaded at the position.

  Next, the slider 181 is moved forward by a predetermined stroke, and the core 161 is moved forward by a predetermined amount (see FIGS. 3 and 4-B). Next, the case main body 2 as an insert product is positioned and loaded so as to cover the convex portion 102 of the first mold 101 (see FIG. 4-C). Then, the second mold 201 is closed on the first mold 101 (see FIG. 4-D). At this time, the core die 205 for molding the inner surface of the connector portion 11 outside the case 1 is advanced by a predetermined amount. The core 161 may be advanced after the case body 2 is positioned and loaded on the first mold 101, or after the mold is closed, and at the same time as the mold is closed.

  After the mold is closed in this way, resin is injected into the cavity K for the connector section 11 formed in the molding mold, and the connector section 11 is injection molded (see FIG. 5-E). By carrying out like this, the case main body 2 and the terminal metal fitting 21 are insert-molded. In addition, from the relationship between the case main body 2 and the connector portion 11, the case main body 2 can be said to be an outsert product rather than an insert product, but there is no essential difference in that both are integrated with the resin. Therefore, in this specification, all are set as insert products.

  After the resin filled in the cavity K is solidified, the first mold 101 and the second mold 201 are opened (see FIG. 5-F), and the slider 181 is moved backward by a predetermined stroke S2 (FIG. 5). See 5-G). Then, the core 161 is pushed out (retracted) from the space portion G by the urging force of the spring coil 171. Thereby, as shown to FIG. 5-G, the core 161 becomes a position which does not interfere with the site | part 21b which protrudes in the case 1 in the terminal metal fitting 21. FIG. For this reason, the formed circuit board mounting case 1 with the connector portion 11 can be taken out from the first mold 101 as it is (see FIG. 5H). Note that the case 1 that is a molded body may be taken out after the core 161 is moved backward by moving the slider 181 backward by a predetermined stroke S2.

  As described above, according to the manufacturing method of the case 1 of the present invention, as in the prior art, the terminal 161 in which the core 161 that is an independent mold component is separately positioned and loaded in the first molding die 101 is manufactured. It is not necessary to arrange the case main body 2 on the substrate 21 before positioning and loading, and to remove the core 161 from between the terminal fitting 21 and the bottom plate 3 in the molded body taken out by opening the mold. do not do. Therefore, according to the manufacturing method of the present invention, the manufacturing efficiency can be increased by the amount that does not require the installation or removal process or operation of the core 161.

  In the above embodiment, the core drive mechanism is exemplified by the inclined cam structure, but the present invention is not limited to this. Further, in the present embodiment, the slide direction of the slider 181 has been described as being provided so as to be slidable in the mold closing direction and the mold opening direction of the first and second molding dies 101, 201. Any direction that intersects with the sliding direction of. Furthermore, although the sliding direction of the core 161 is the direction along the bottom plate 3 of the case body 2, it is sufficient that the core 161 is positioned correctly at a portion corresponding to the space portion G. May be set according to the shape of the case body 2 and the protruding form of the terminal fitting 21 into the case 1. In the above example, the case where the elastic body is a coil spring (spring) is illustrated, but a bamboo shoot spring, a leaf spring, or the like can be used, or a slide mechanism using an angular pin or the like can be applied.

  Furthermore, in the said form, although the 1st shaping | molding die 101 did not move (fixed), the case where it embodied as a thing which slides the slider 181 for a core drive up or down with an air cylinder, As described above, on the contrary, the first mold 101 may be slid up and down, assuming that the slider 181 does not move (is fixed) in the mold apparatus. Alternatively, the core 161 may be driven as both the core driving slider 181 and the first mold 101 move (slid).

  6 and 7, the slider 181 is not moved (fixed) in the mold apparatus, and the slider 181 is relatively moved with respect to the first mold 101 by sliding the first mold 101 up and down. Shows an example of moving forward or backward. In this configuration, the slider 181 in the above embodiment is fixed upright on the stationary platen 301 of the mold apparatus, while the first mold 101 is placed on the stationary plate 301 of the mold apparatus, for example, a compression coil spring or the like. By holding elastically via an elastic body (hereinafter referred to as a coil spring) 305 and pressing down the second mold 201 and closing the mold, the first mold 101 is pressed down against the coil spring 305, As shown in FIG. 7, the slider 181 is moved forward relative to the first mold 101. 6 and 7 are different from those shown in FIGS. 1 to 3 and the like only in this point. Therefore, the same parts as those shown in FIG. Detailed description is omitted.

  That is, in this case, as shown in FIG. 7, when the second molding die 201 is pressed down, the coil spring 305 is compressed and the first molding die 101 is pushed down by a predetermined amount, the core 161 is moved to the first state. Together with the mold 101, the slider 181 moves downward relative to the slider 181. At the same time, the slider 181 moves forward relative to the first mold 101. Accordingly, the inclined portion 182 pushes the driving inclined portion 163 of the core 161 laterally (left side in the figure) by the action of the inclined cam, so that the core is exactly the same as that shown in FIGS. 161 moves to be pushed into the space. In this embodiment, since the driving of the core 161 and the slider 181 uses mold closing, driving means such as an air cylinder is not required, so that the structure can be simplified. Incidentally, according to this apparatus, after the molding, the mold 161 is opened, and at the same time, the core 161 is retracted, and the circuit board mounting case 1 in which the connector portion is formed can be taken out.

  In the above description, the case where the mold is closed by moving the second mold 201 down is described. Of course, the mold can be closed by moving the first mold 101 up. In the mold apparatus shown in FIG. 6, the first mold 101 is pushed down by a predetermined amount, but the second mold 201 is pushed down to close the mold by compressing the compression coil spring 305. However, instead of this mold closing action, the slider 181 is moved forward relative to the first mold 101 by pushing the first mold 101 against the coil spring 305 by a separate means. The mold may be closed.

Sectional drawing for description of the shaping | molding die apparatus used for manufacture of the case of FIG. 10 used in embodiment of this invention. The principal part enlarged view of FIG. Sectional drawing when a slider is advanced in FIG. FIG. 10 is an explanatory process diagram of a mold closed state before injecting resin among the processes of manufacturing the case of FIG. 10 using the mold apparatus of FIGS. FIG. 10 is an explanatory process chart of the process of manufacturing the case of FIG. 10 using the molding die apparatus of FIGS. 1 to 3 until the mold is opened after the resin is injected and the molded body is taken out. Sectional drawing for description which shows another example of a shaping | molding die apparatus. Sectional drawing for description when a mold is closed in the mold apparatus of FIG. The schematic structure perspective view which shows an example of the case for circuit board mounting with a connector part. Sectional drawing of the case of FIG. The schematic structure sectional drawing which shows another example of the case for circuit board mounting with a connector part, and the principal part enlarged view. FIG. 11 is an explanatory process diagram of a mold closed state before injecting resin in the conventional manufacturing process of the case of FIG. 10. FIG. 11 is an explanatory process chart of the conventional manufacturing process of the case of FIG. 10 from injection of resin, mold opening to take out the molded body, and withdrawal of the core.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case for circuit board mounting with connector part 2 Case main body 3 Bottom plate 5 Side wall 7 Opening part 11 Connector part 21 Terminal metal fitting 21b The part 101 protruded in a case of terminal metal fittings 101 1st shaping | molding die 161 Core 171 Coil spring (elasticity means)
181 Core driving slider 201 Second mold G Space part K Connector cavity

Claims (4)

In the case body that has a side wall standing upright at the periphery of the bottom plate, the resin connector part wraps at least part of the terminal metal fitting in the opening provided on the side wall of the case main body, and the case main body and the terminal metal fitting are inserted products As a circuit board mounting case with a connector part, which is formed as a single piece, and has a space part between the part protruding from the case of the terminal fitting and the bottom plate,
The case body and the terminal fitting are inserted into both molds of the first mold that forms the side that fits the inner surface of the case body and the second mold that forms the side that fits the outer surface of the case body. In a state where it is positioned and loaded as a product, both molds are closed with the bottom plate sandwiched between them,
In this closed state, a resin is injected into the cavity for the connector part formed in both molding dies, so that at least a part of the terminal fitting is wrapped, and the connector is connected to the opening in the case body. In the method of manufacturing a circuit board mounting case with a connector part by integrally forming the part,
A core disposed in a portion corresponding to the space portion to be an undercut portion in the formation of the connector portion,
The circuit board mounting case with the connector portion formed after the mold opening is slidable and urged by elastic means in the direction of being pushed out from the space portion so that it can be taken out from the first mold. While being provided in the first mold,
A core driving slider capable of pressing the core into the space portion is provided in the first mold, and the core is moved forward relative to the first mold so that the core moves to the space portion. Manufactured by a mold apparatus having a core drive mechanism configured such that the core is pushed out of the space portion by being pushed back into the core mold and the core drive slider is moved backward relative to the first mold. A method of manufacturing a case for mounting a circuit board with a connector, characterized in that:   2. The connector-attached connector according to claim 1, wherein the core driving slider is provided so as to be slidable relative to the first mold in a direction intersecting a sliding direction of the core. 3. A method of manufacturing a case for mounting a circuit board.   The core driving slider is provided so as to be slidable relative to the first mold in the mold closing direction and mold opening direction of the first and second molds. Or the manufacturing method of the case for circuit board mounting with a connector part of 2 description.   The core is provided in the first mold in a state of being slidable along the bottom plate and being urged by an elastic means in a direction of being pushed out from the space portion. The manufacturing method of the case for circuit board mounting with a connector part of any one of -3.

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