KR102112875B1 - Mold for molding, manufacture method of resin molded article using the same and resin molded article - Google Patents

Abstract

The present invention can easily position and maintain the section of the terminal inside the first and second mold cavities, and furthermore, a molding mold capable of miniaturizing a resin molded product, a method for manufacturing the resin molded product using the molded product, and a resin molded product It aims to provide.
In order to solve the above object, the molding mold of the present invention, the first, second mold (10), (20) having a cavity (C1) that can be accommodated at least the section portion (220a) of the terminal (200a) I have it. The first mold 10 has a first surface 221a of the cutout portion 220a and a convex portion 11 that can be contacted, and a projection 13a formed with a gap between the convex portions 11. The protrusion 13a is an edge on the root side of the protrusion 13a, and the first edge 13a1 contactable with the second surface 222a opposite to the first surface 221a of the section 220a. Wow, the second edge 13a2 which is the edge of the front end portion of the projection 13a, and the inclined surface 13a3 inclined to be spaced from the convex portion 11 from the first edge 13a1 to the second edge 13a2. ).

Description

Molding mold, manufacturing method of resin molded product using this, and resin molded product {MOLD FOR MOLDING, MANUFACTURE METHOD OF RESIN MOLDED ARTICLE USING THE SAME AND RESIN MOLDED ARTICLE}

The present invention relates to a mold for molding, a method for manufacturing a resin molded article using the mold, and a resin molded article.

Some conventional resin molded products have a body and a terminal. The body has a base, an annular side wall formed on the base, and a partition formed on the base. The partition part divides the inner space of the side wall into first and second spaces. The terminal has a frame that connects the first, second, third, and fourth fragments and the first, second, third, and fourth fragments. The leading end of the first section is embedded in the partition so that its cross section is exposed to the first space. The distal end of the second section is embedded in the partition so that its cross section is exposed to the second space. The third section portion is embedded in the side wall so that its cross section is exposed to the first space. The fourth section is buried in the side wall so that its cross section is exposed to the second space.

The resin molded article is prepared as follows. Between the inner surface of the first convex portion of the first mold and the convex portion of the second mold, the proximal end portion of the second section is formed between the inner surface of the second convex portion of the first mold and the convex portion of the second mold. While being sandwiched and held between, the distal end portions of the first and second section portions and the third and fourth section portions are disposed inside the first and second mold cavities. Thereafter, an insulating resin is injected into the cavity to cure. The insulating resin becomes the body, and the first and second convex portions of the first mold form first and second spaces of the body. The front end portions of the first and second section portions of the terminal are embedded in the partition portion of the body, and the third and fourth section portions of the terminal are embedded in the side wall of the body. Thereafter, the first, second, third, and fourth section portions are separated from the frame.

[Patent Document 1] Japanese Patent Publication No. 07-099016

The third and fourth section portions are positioned and held inside the cavity by the base end portions of the first and second section portions being held in the first and second molds. That is, since the first and second section portions for positioning and maintaining the third and fourth section portions inside the cavity are indispensable, the terminal is enlarged. Therefore, it has been difficult to downsize the resin molded product.

The present invention has been devised in view of the above circumstances, and the purpose thereof is that the section of the terminal can be easily positioned and maintained inside the first and second mold cavities, and furthermore, the resin molded product can be miniaturized. It is possible to provide a mold for molding, a method for manufacturing a resin molded article using the mold, and a resin molded article.

In order to solve the above problems, the molding mold of the present invention includes first and second molds having a cavity that can accommodate at least a section of a terminal. The first mold has a convex portion that can be brought into contact with the first surface of the section, and a protrusion formed with a gap at the convex portion. The protrusion is an edge on the root side of the protrusion, and further includes a first edge contactable with a second surface opposite to the first surface of the section, a second edge that is an edge toward the tip end of the protrusion, and the It has an inclined surface or a curved curved surface that is inclined to be spaced from the convex portion from the first edge to the second edge.

In the case of this type of molding die, the first surface of the section of the terminal is brought into contact with the convex portion of the first mold, and the second surface of the section of the terminal is brought into contact with the first edge of the projection of the first mold. As a result, since the sectioned portion is held by the convex portion of the first mold and the first edge of the projection, the sectioned portion of the terminal can be easily positioned and maintained inside the cavity in the first and second molds. In addition, since the section portion is held by the first mold convex portion and the first edge of the projection, it is possible to suppress the terminal from being moved or deformed by the injection pressure when the resin is injected into the cavity. In addition, there is no need to separately form a portion for positioning and retaining the section in the first and second mold cavities. For this reason, since the terminal is not enlarged, the size of the resin molded product can be reduced. In addition, since the section portion is guided between the convex portion of the first mold and the first edge of the projection by an inclined surface or curved surface, the section portion can be easily inserted between the convex portion of the first mold and the first edge of the projection. have. In addition, the inclined surface of the projection is inclined to be spaced from the section. Alternatively, the curved surface of the projection is curved so as to be spaced from the section. That is, since a space forming a part of the cavity is formed between the second surface of the section and the inclined surface of the projection, or the curved surface, resin can be introduced into the space. Therefore, the second surface can be embedded in the resin even though the second surface of the section is brought into contact with the projection.

The first and second molds may be configured such that the terminal body of the terminal is connected to the terminal body and the folded body is bent with respect to the terminal body inside the cavity.

In the case of this type of molding die, since the section is folded at a right angle to the terminal body and bent, it is easy to be affected by the injection pressure when the insulating resin is injected into the cavity. However, since the sectioning portion is held by the convex portion and the first edge of the projection, it is possible to suppress the movement or deformation of the sectioning portion of the terminal by the injection pressure.

The first and second molds can be configured such that the terminal body is accommodated in the cavity and partially fitted.

 In the case of this type of molding die, the terminals are movable or deformed by the injection pressure when the resin is injected into the cavity, because the first and second molds hold the terminal body inside the cavity. It can be further suppressed.

The manufacturing method of the resin molded article of this invention is a method of manufacturing a resin molded article using the said molding mold. In this method, a section of the terminal is inserted between the projection of the first mold and the projection, the first surface of the section is the projection, and the second surface of the projection is the first edge of the projection. By abutting, the section is held between the convex portion and the first edge. In this state, the first and second molds are mold-closed, and at least, the section of the terminal is disposed inside the first and second mold cavities. Insulating resin is injected into the cavity and cured, so that the section is embedded in the insulating resin.

In the case of the manufacturing method of this type, only by inserting the section of the terminal between the projection of the first mold and the projection, the section is held by the first edge of the projection and projection of the first mold. Therefore, the section of the terminal can be easily positioned and maintained inside the cavity in the first and second molds. In addition, since the section portion is held by the first mold convex portion and the first edge of the projection, it is possible to suppress the terminal from being moved or deformed by the injection pressure when the resin is injected into the cavity. In addition, it is not necessary to form a portion for positioning and maintaining the section in the first and second mold cavities. For this reason, since the terminal is not enlarged, the size of the resin molded product can be reduced. In addition, the insulating resin injected into the cavity flows into the space between the second surface of the section and the inclined surface or curved surface of the projection. For this reason, the second surface can be embedded in the resin even though the second surface of the section is brought into contact with the projection.

When the section of the terminal is disposed inside the first and second mold cavities, the terminal body of the terminal is connected to the terminal body, and the folded portion is bent and bent with respect to the terminal body, inside the cavity. It is possible to deploy.

In the case of this type of manufacturing method, since the section is folded at a right angle to the terminal body and bent, it is easy to be affected by the injection pressure when injecting the insulating resin into the cavity. However, since the sectioning portion is held by the convex portion and the first edge of the projection, it is possible to suppress the movement or deformation of the sectioning portion of the terminal by the injection pressure.

 The first and second molds can receive the terminal body into the cavity and at the same time partially retain it.

In the case of this type of manufacturing method, since the terminal body is held in the first and second molds inside the cavity, the terminal is moved or deformed by the injection pressure when the resin is injected into the cavity. Can be suppressed.

The resin molded article of the present invention includes a terminal and a body. The terminal has a section. The section portion has a first surface and a second surface opposite to the first surface. The body has a base, a side wall installed on the base and having a wall surface, and a recess formed in the side wall. The section portion is embedded in the side wall such that the first surface is exposed from the wall surface of the side wall. The concave portion is an edge on the opening side of the concave portion, and further includes a first edge contacting the second surface of the segmented portion, a second edge that is an edge on the bottom side of the concave portion, and the second edge from the first edge. It has an inclined surface or a curved surface that is inclined to be spaced from the section to the edge.

In the case of the resin molded article of this type, the first surface of the section of the terminal is exposed from the wall surface of the side wall of the body. The second surface of the section is in contact with the first edge of the recess of the body. Therefore, the convex portion of the first mold can be brought into contact with the first surface of the section, while the first edge of the projection of the first mold for forming the recess can be brought into contact with the second surface of the section. That is, since it is possible to hold the sectioned portion between the convex portion of the first mold and the first edge of the projection, the sectioned portion of the terminal can be easily positioned and maintained inside the cavity in the first and second molds. . In addition, since it is possible to hold the sectioned portion by the first molded convex portion and the first edge of the projection, it is possible to suppress the terminal from being moved or deformed by the injection pressure when the resin is injected into the cavity. As described above, since the section portion is held between the convex portion of the first mold and the first edge of the projection, it is necessary to install a portion for positioning and maintaining the section portion inside the first and second mold cavities in the terminal. There is no For this reason, since the terminal is not enlarged, the size of the resin molded product can be reduced. Further, the inclined surface of the concave portion of the body is inclined so as to be spaced from the sectioned portion from the first edge to the second edge. Alternatively, the curved surface of the concave portion of the body is curved so as to be spaced from the sectioned portion from the first edge to the second edge. For this reason, the second surface can be embedded in the body even though the second surface of the section is brought into contact with the projection of the first mold.

The terminal can be configured to have a terminal body embedded in the base. The fragment portion is connected to the terminal body, and it is also possible to have a configuration in which the terminal body is folded and bent.

The body can be configured to have an accommodation space partitioned by the side walls. The wall surface can be a wall surface on the side of the accommodation space.

According to the present invention, the section of the terminal can be easily positioned and maintained inside the cavity of the mold, and the size of the terminal and the size of the resin molded product can be achieved.

1A is a perspective view showing the resin molded article according to the embodiment of the present invention from the front, plan and right sides.
1B is a perspective view showing the resin molded article from the back, bottom and right sides.
2A is a bottom surface of the resin molded article.
2B is a bottom surface of the resin molded article and is a view showing a portion embedded in the body of the terminal.
Figure 2c is a bottom surface of the body and the terminal of the resin molded article, a view showing a portion embedded in the body of the terminal.
Fig. 3A is a sectional view taken along line 3A-3A in Fig. 1A of the resin molded article.
3B is a cross-sectional view taken along line 3B-3B in FIG. 2A of the resin molded article.
3C is a cross-sectional view taken along line 3C-3C in FIG. 1A of the resin molded article.
4 is a perspective view showing the front, flat and right sides of the terminal of the resin molded article.
Fig. 5 is a perspective view showing front, flat and right sides of the sealing portion of the resin molded article.
6A is a view showing a process of the method for manufacturing the resin molded article, and is a view showing a cross section corresponding to FIG. 3A.
6B is a view showing a process of the method for manufacturing the resin molded article, and is a view showing a cross section corresponding to FIG. 3B.
6C is a view showing a process of the method for manufacturing the resin molded article, and is a view showing a cross section corresponding to FIG. 3C.

Hereinafter, the resin molded article according to the embodiment of the present invention will be described with reference to FIGS. 1A to 6C. The resin molded article shown in Figs. 1A and 1B includes a body 100, terminals 200a, 200b, and 200c, and a sealing portion 300. Hereinafter, each constituent requirement of the resin molded article will be described in detail. 1A and 1B, the first direction Y is the longitudinal direction of the resin molded article, the second direction X is the width direction of the resin molded article, and the third direction Z is the thickness direction of the resin molded article. The second direction X intersects the first direction Y at right angles, and the third direction Z intersects the first and second directions Y and X at right angles.

The body 100 is a molded article made of an insulating resin, as shown in Figs. 1A to 3C. The body 100 includes a base 110, side walls 120, recesses 130a, 130b, 130c (this corresponds to the recesses of the body within the scope of the claims), and a recess 140 Wow, it has a convex portion 150. The base 110 has a first surface 111 and a second surface 112 opposite to the first surface 111. An annular side wall 120 is erected and installed at the periphery of the first surface 111 of the base 110. On the central portion of the circular portion of the first surface 111 of the base 110, a cylindrical convex portion 150 is erected and installed. The receiving space S in a concave shape is partitioned by the base 110, the side wall 120, and the convex portion 150. The side wall 120 has a wall surface 121 on the accommodation space S side and a wall surface 122 on the opposite side.

The recesses 140 are formed on the second surface 112 of the base 110, as shown in Figs. 1B to 3C. The concave portion 140 has a central portion 141 and a plurality of branch portions 142. The central portion 141 is a substantially conical concave portion, as shown in Figs. 3A and 3B. The branch portion 142 is an elongated concave portion and extends radially from the central portion 141. The length dimension of the branch portion 142 is the length dimension of the terminal body 210a to be described later of the terminal 200a. Smaller than. The width of the branch portion 142 is smaller than the width of the terminal body 210a.

2B to 3C, terminals 200a are embedded in the base 110 and the side walls 120. As shown in FIGS. 2B to 3C, the terminal 200b is buried in one side of the second direction X of the terminal 200a of the base 110. The terminal 200c is buried in the other side of the second direction X of the terminal 200a of the base 110.

 The terminal 200a is a metal plate. 2B to 4, the terminal 200a has a terminal body 210a, a segmented portion 220a, 230a, and 240a, and a connection portion 250a, 260a. The terminal body 210a has a first surface 211a and a second surface 212a opposite thereto. In the terminal body 210a, the first surface 211a is partially exposed from the first surface 111 of the base 110, and the second surface 212a is a concave portion 140 of the base 110. It is embedded in the base 110 to partially expose from the branch portion 142 of the. The exposed portion of the first surface 211a of the terminal body 210a is disposed around the convex portion 150.

The segmented portion 220a is connected to one end portion in the longitudinal direction of the terminal body 210a, and is a plate bent at a right angle to the terminal body 210a. The sectioning part 220a has a first surface 221a and a second surface 222a opposite thereto. The segmented portion 220a is buried in the sidewall 120 such that the first surface 221a is exposed from the wall surface 121 of the sidewall 120. Specifically, the other end in the third direction of the first surface 221a is buried in the sidewall 120, and a portion other than the end of the first surface 221a is a wall surface 121 of the sidewall 120. From. The segmented portion 220a is positioned between the accommodation space S and the concave portion 130a, which will be described later.

The cut-out portion 230a is connected to one end portion in the width direction of the terminal body 210a, and is a plate bent at a right angle to the terminal body 210a. The cut-out portion 230a has a first surface 231a and a second surface 232a opposite thereto. The cut-out portion 230a is embedded in the side wall 120 so that the first surface 231a is exposed from the wall surface 121 of the side wall 120. Specifically, the other end in the third direction of the first surface 231a is buried in the sidewall 120, and a portion other than the end of the first surface 231a is the wall surface 121 of the sidewall 120. From. The segmented portion 230a is positioned between the accommodation space S and the concave portion 130b, which will be described later.

The cut-out portion 240a is connected to the other end portion in the width direction of the terminal body 210a, and is a plate bent at a right angle to the terminal body 210a. The segmented portion 240a has a first surface 241a and a second surface 242a opposite thereto. The segmented portion 240a is embedded in the sidewall 120 such that the first surface 241a is exposed from the wall surface 121 of the sidewall 120. Specifically, the other end in the third direction of the first surface 241a is buried in the sidewall 120, and a portion other than the end of the first surface 241a is the wall surface 121 of the sidewall 120 From. The segmented portion 240a is positioned between the accommodation space S and the concave portion 130c, which will be described later. The sectioning section 230a and the sectioning section 240a face each other, and are also directed in a direction orthogonal to the sectioning section 220a.

The connecting portion 250a is connected to one side of the first direction Y of the section portion 230a, which is one end in the width direction of the terminal body 210a, and further extends to one side in the second direction X. Portions other than the tip of the connecting portion 250a are embedded inside the base 110. The front end portion of the connecting portion 250a protrudes from the outer surface of the base 110. The leading end portion of the connecting portion 250a is folded and bent so that its lower surface is approximately the same height as the second surface 112 of the base 110. The connecting portion 260a is connected to one side of the first direction Y of the section portion 240a, which is the other end portion in the width direction of the terminal body 210a, and further extends to the other side of the second direction X. Portions other than the tip of the connecting portion 260a are embedded in the base 110. The leading end portion of the connecting portion 260a protrudes from the outer surface of the base 110. The distal end portion of the connecting portion 260a is folded and bent so that its lower surface is approximately the same height as the second surface 112 of the base 110.

 The terminal 200b is a metal plate. 2B to 4, the terminal 200b has a terminal body 210b and a connection portion 220b. The terminal body 210b has a first surface 211b and a second surface 212b on the opposite side. In the terminal body 210b, the first surface 211b is partially exposed from the first surface 111 of the base 110, and the second surface 212b is a recess 140 of the base 110 It is embedded in the base 110 to partially expose from the branch portion 142 of the. The exposed portion of the first surface 211b of the terminal body 210b is disposed around the convex portion 150. The connecting portion 220b is connected to one end portion of the terminal body 210b in the first direction Y and extends in the second direction X. Portions other than the tip of the connecting portion 220b are embedded inside the base 110. The front end portion of the connecting portion 220b protrudes from the outer surface of the base 110. The leading end portion of the connecting portion 220b is folded and bent so that its lower surface is approximately the same height as the second surface 112 of the base 110.

The terminal 200c is a metal plate. 2B to 4, the terminal 200c has a terminal body 210c and a connection portion 220c. The terminal body 210c has a first surface 211c and a second surface 212c on the opposite side. In the terminal body 210c, the first surface 211c is partially exposed from the first surface 111 of the base 110, and the second surface 212c is a recess 140 of the base 110 It is embedded in the base 110 to partially expose from the branch portion 142 of the. The exposed portion of the first surface 211c of the terminal body 210c is disposed around the convex portion 150. The connecting portion 220c is connected to one end portion of the terminal body 210c in the first direction Y and extends in the second direction X. Portions other than the tip of the connecting portion 220c are embedded in the base 110. The leading end of the connecting portion 220c protrudes from the outer surface of the base 110. The distal end of the connecting portion 220c is folded and bent so that its lower surface is approximately the same height as the second surface 112 of the base 110.

As shown in FIGS. 1A and 3A, a concave portion 130a is formed on one side of the first direction Y of the section portion 220a of the terminal 200a of the side wall 120. As shown in FIGS. 1A and 3C, a concave portion 130b is formed on one side of the second direction X of the section portion 230a of the terminal 200a of the side wall 120. 1A and 3C, recesses 130c are formed on the other side of the second direction X of the section 240a of the terminal 200a of the side wall 120. As shown in FIGS.

 The concave portion 130a is an elongated concave portion extending in the second direction X, as shown in Fig. 1A. The dimension in the second direction X of the concave portion 130a is smaller than the dimension in the second direction X of the section portion 220a. As shown in FIG. 3A, the concave portion 130a has a first edge 131a, a second edge 132a, and an inclined surface 133a. The inclined surface 133a is an inner wall surface of the section 220a of the concave portion 130a. The first edge 131a is an edge of the opening side (one side in the third direction Z) of the concave portion 130a of the inclined surface 133a. The first edge 131a is in contact with the second surface 222a of the section 220a. The second edge 132a is an edge of the bottom side (the other side of the third direction Z) of the concave portion 130a of the inclined surface 133a. The inclined surface 133a is inclined to be spaced from the section 220a, from the first edge 131a to the second edge 132a. For this reason, the substantially entire area of the second surface 222a of the section portion 220a is embedded in the side wall 120.

The concave portion 130b is an elongated concave portion extending in the first direction Y, as shown in Fig. 1A. The dimension in the first direction X of the concave portion 130b is smaller than the dimension in the first direction Y of the section portion 230a. As shown in Fig. 3C, the concave portion 130b has a first edge 131b, a second edge 132b, and an inclined surface 133b. The inclined surface 133b is an inner wall surface of the section 230a of the concave portion 130b. The first edge 131b is an edge of the opening side (one side in the third direction Z) of the concave portion 130b of the inclined surface 133b. The first edge 131b is in contact with the second surface 232a of the section portion 230a. The second edge 132b is an edge of the bottom side (the other side of the third direction Z) of the concave portion 130b of the inclined surface 133b. The inclined surface 133b is inclined to be spaced from the section 230a, from the first edge 131b to the second edge 132b. For this reason, the substantially entire area of the second surface 232a of the section portion 230a is embedded in the side wall 120.

The concave portion 130c is an elongated concave portion extending in the first direction Y, as shown in Fig. 1A. The dimension in the first direction Y of the concave portion 130c is smaller than the dimension in the first direction Y of the section portion 240a. The concave portion 130c has a first edge 131c, a second edge 132c, and an inclined surface 133c, as shown in FIG. 3C. The inclined surface 133c is an inner wall surface of the section 240a of the concave portion 130c. The first edge 131c is an edge of the opening side (one side in the third direction Z) of the concave portion 130c of the inclined surface 133c. The first edge 131c is in contact with the second surface 242a of the section 240a. The second edge 132c is an edge of the bottom side (the other side of the third direction Z) of the concave portion 130c of the inclined surface 133c. The inclined surface 133c is inclined to be spaced from the section 240a, from the first edge 131c to the second edge 132c. For this reason, the substantially entire area of the second surface 242a of the section 240a is embedded in the sidewall 120.

The sealing portion 300 is filled in the concave portion 140, as shown in FIGS. 1B to 2B, 3A to 3C, and 5, and fixed to the body 100 and the terminals 200a, 200b, and 200c It is an insulating resin. The sealing portion 300 has a central portion 310 and a plurality of branch portions 320. As shown in FIGS. 3A and 3B, the central portion 310 is substantially conical, and is filled in the central portion 141 of the concave portion 140. The branch portion 320 is an elongated protruding stem, which extends radially from the central portion 310 and is also filled in the branch portion 142 of the concave portion 140. Among the branch portions 320, some of the branch portions 320 are fixed to the terminal body 210a of the body 100 and the terminal 200a. Among the branch portions 320, a plurality of other branch portions 320 are fixed to the terminal body 210a of the body 100, the terminal 200a, and the terminal body 210b of the terminal 200b. Among the branch portions 320, the remaining plurality of branch portions 320 are fixed to the body 100, the terminal body 210a of the terminal 200a, and the terminal body 210c of the terminal 200c.

Hereinafter, the first and second molding molds used in manufacturing the resin molded article described above will be described with reference to FIGS. 6A to 6C. The first molding mold has first and second molds 10 and 20. The second molding mold has third and fourth molds 30 and 40.

The first mold 10 has a convex portion 11, a concave portion 12, projections 13a, 13b, 13c, and a spool 14. The convex portion 11 is a shape corresponding to the shape of the accommodation space S of the resin molded product body 100. The concave portion 12 is formed around the convex portion 11 and has a shape corresponding to the outer shape of the side wall 120 of the body 100. The spool 14 is formed in the convex portion 11.

As shown in Fig. 6A, the projections 13a are formed on the bottom surface of the concave portion 12 at a distance from one of the convex portions 11 in the first direction Y. The protrusion 13a has a shape corresponding to the concave portion 130a of the body 100. That is, the projection 13a is an elongated protruding stem extending in the second direction X. The projection 13a has a first edge 13a1, a second edge 13a2, and an inclined surface 13a3. The inclined surface 13a3 is a surface on the convex portion 11 side. The first edge 13a1 is an edge on the root side of the projection 13a of the inclined surface 13a3. The distance between the first edge 13a1 and the convex portion 11 is the distance from the first surface 221a of the section 220a to the second surface 222a (ie, the thickness dimension of the section 220a). Is roughly the same as The second edge 13a2 is an edge on the tip end of the protrusion 13a of the inclined surface 13a3. The inclined surface 13a3 is inclined to be spaced from the convex portion 11 from the first edge 13a1 to the second edge 13a2.

As shown in Fig. 6C, the projections 13b are formed on the bottom surface of the concave portion 12 from the convex portion 11 in one direction in the second direction X. The projection 13b has a shape corresponding to the concave portion 130b of the body 100. That is, the projection 13b is an elongated protruding stem extending in the first direction Y. The projection 13b has a first edge 13b1, a second edge 13b2, and an inclined surface 13b3. The inclined surface 13b3 is a surface on the convex portion 11 side. The first edge 13b1 is an edge on the root side of the projection 13b of the inclined surface 13b3. The distance between the first edge 13b1 and the convex portion 11 is the distance from the first surface 231a of the section 230a to the second surface 232a (that is, the thickness dimension of the section 230a). ). The second edge 13b2 is an edge on the tip end of the protrusion 13b of the inclined surface 13b3. The inclined surface 13b3 is inclined to be spaced from the convex portion 11 from the first edge 13b1 to the second edge 13b2.

As shown in Fig. 6C, the projections 13c are formed on the bottom surface of the concave portion 12 from the convex portion 11 to the other side in the second direction X. The projection 13c has a shape corresponding to the concave portion 130c of the body 100. That is, the projection 13c is an elongated protruding stem extending in the first direction Y. The projection 13c has a first edge 13c1, a second edge 13c2, and an inclined surface 13c3. The inclined surface 13c3 is a surface on the convex portion 11 side. The first edge 13c1 is an edge on the root side of the projection 13c of the inclined surface 13c3. The distance between the first edge 13c1 and the convex portion 11 is the distance from the first surface 241a of the section 240a to the second surface 242a (ie, the thickness dimension of the section 240a). Is roughly the same as The second edge 13c2 is an edge on the tip end of the projection 13c of the inclined surface 13c3. The inclined surface 13c3 is inclined to be spaced from the convex portion 11 from the first edge 13c1 to the second edge 13c2.

The second mold 20 has a concave portion 21 and a projection 22. The concave portion 21 has a shape corresponding to the outer shape of the base 110 of the body 100. The projection 22 is formed on the bottom surface of the concave portion 21. The projection 22 has a central portion 22a and a plurality of branch portions 22b. The central portion 22a has a shape corresponding to the inner shape of the central portion 141 of the concave portion 140 of the body 100. The branch portion 22b is an elongated protruding stem corresponding to the inner shape of the branch portion 142 of the concave portion 140 of the body 100, and extends radially from the central portion 22a. The length dimension of 22b) is smaller than the length dimension of the terminal body 210a of the terminal 200a. The width dimension of the branch portion 22b is smaller than the width dimension of the terminal body 210a.

In the state where the first and second molds 10 and 20 are coupled to each other, the convex portion 11, the concave portion 12, the projections 13a, 13b, 13c, the concave portion 21 and the projection 22 ) Partitions the cavities C1 of the first and second molds 10 and 20. The cavity C1 has a shape corresponding to the outer shape of the body 100 and the connecting portions 250a, 260a, 220b, and 220c protruding from the body 100.

The third mold 30 is substantially the same shape as the first mold 10 except that it is different from the first mold 10 in that it does not have the spool 14. The fourth mold 40 is substantially the same shape as the second mold 20 except that it does not have a projection 22 and has a spool 42, which is different from the second mold 20. . In the state where the third and fourth molds 30 and 40 are coupled to each other, the convex portion 31, the concave portion 32, the projections 33a, 33b, 33c and the concave portion 41 are , Cavity C2 of the fourth molds 30 and 40 is partitioned. The cavity C2 has a shape corresponding to the external shape of the resin molded article.

Hereinafter, a method of manufacturing the resin molded article using the first, second molds 10, 20 and third, fourth molds 30, 40 will be described with reference to FIGS. 6A to 6C. . First, insert the section portion 220a of the terminal 200a between the convex portion 11 and the projection 13a, and the section portion 230a of the terminal 200a is between the convex portion 11 and the projection 13b. And insert the intersecting portion 240a of the terminal 200a between the convex portion 11 and the protrusion 13c. Then, the first surface 221a of the segmented portion 220a partially abuts the convex portion 11, and the second surface 222a of the segmented portion 220a is the first edge 13a1 of the projection 13a Wow. That is, the cut-out portion 220a is held between the convex portion 11 and the first edge 13a1 of the projection 13a (see FIG. 6A). At this time, the second edge 13a2 and the inclined surface 13a3 of the projection 13a do not contact the second surface 222a of the section 220a. The first surface 231a of the section portion 230a partially abuts the convex portion 11, and the second surface 232a of the section portion 230a is in contact with the first edge 13b1 of the projection 13b Contact. That is, the cut-out portion 230a is held between the convex portion 11 and the first edge 13b1 of the protrusion 13b (see FIG. 6C). At this time, the second edge 13b2 and the inclined surface 13b3 of the protrusion 13b do not contact the second surface 232a of the section 230a. The first surface 241a of the section portion 240a partially abuts the convex portion 11, and the second surface 242a of the section portion 240a is attached to the first edge 13c1 of the projection 13c Contact. That is, the cut-out portion 240a is held between the convex portion 11 and the first edge 13c1 of the projection 13c (see FIG. 6C). At this time, the second edge 13c2 and the inclined surface 13c3 of the protrusion 13c do not contact the second surface 242a of the section 240a.

Thereafter, the first and second molds 10 and 20 are mold-closed. Then, the terminals 200a, 200b, 200c are accommodated inside the cavities C1 of the first and second molds 10, 20, and the terminal bodies 210a, 210b of the terminals 200a, 200b, 200c, 210c) is fitted to the protrusions 11 of the first mold 10 and the protrusions 22 of the second mold 20. Specifically, the terminal body 210a is held between the convex portion 11 and the branch portion 22b of some of the branch portions 22b of the projection 22. The terminal body 210a and the terminal body 210b are held between the convex portion 11 and the other branch portion 22b of the branch portion 22b of the projection 22. The terminal body 210a and the terminal body 210c are held between the convex portion 11 and the other branch portion 22b of the branch portion 22b of the projection 22 to be held.

Thereafter, the first insulating resin R1 is injected from the spool 14 inside the cavities C1 of the first and second molds 10 and 20 to be layered on the cavities C1. Thereafter, the first insulating resin R1 is cured. In this way, the first insulating resin R1 is molded as the body 100. A concave portion 140 corresponding to the shape of the projection 22 is formed on the second surface 222a of the body 100, and the projections 13a, 13b, and 13c are formed on the sidewall 120 of the body 100. Concave portions 130a, 130b, and 130c corresponding to the shape are formed. In this way, the terminals 200a, 200b, and 200c are insert molded into the body 100 (first insulating resin R1).

Specifically, the terminal bodies 210a, 210b, 210c are embedded in the base 110 of the body 100. As a result, the first surfaces 211a, 211b, 211c of the terminal bodies 210a, 210b, 210c are partially exposed from the first surface 111 of the body 100. The second surface 212a of the terminal body 210a is partially exposed from the branch portion 142 of a part of the concave portion 140 of the body 100. From the other branch portions 142 of the concave portion 140 of the body 100, the second surfaces 212a, 212b of the terminal bodies 210a, 210b are partially exposed. From the remaining branch portions 142 of the concave portion 140 of the body 100, the second surfaces 212a, 212c of the terminal bodies 210a, 210c are partially exposed. Portions other than the tip portions of the connecting portions 250a, 260a, 220b, and 220c are embedded in the base of the body 100, and the tip portion protrudes out of the body 100. Sections 220a, 230a, and 240a are embedded in the sidewall 120 of the body 100. As a result, the first surfaces 221a, 231a, and 241a of the section portions 220a, 230a, and 240a are exposed from the wall surface 121 of the side wall 120. At the same time that the second surfaces 222a, 232a, and 242a of the section portions 220a, 230a, 240a contact the first edges 131a, 131b, 131c of the concave portions 130a, 130b, 130c. It is covered with the resin inside the inclined surfaces 133a, 133b, 133c of the concave portions 130a, 130b, 130c. Thereafter, the first and second molds 10 and 20 are released, and the body 100 and the terminals 200a, 200b, and 200c are taken out.

Thereafter, the body 100 and the terminals 200a, 200b, and 200c are accommodated in the cavity C2 of the third and fourth molds 30 and 40, and the body 100 is used as the fourth mold 40. ) To block the concave portion 140. Accordingly, the space is divided by the fourth mold 40 and the concave portion 140 of the body 100. Thereafter, a second insulating resin R2 is injected into the space from the spool 14 to fill the space (concave portion 140), and then the second insulating resin R2 is cured. In this way, the second insulating resin R2 is molded as the sealing portion 300. Thus, the sealing portion 300 is fixed to the body 100 and the terminals 200a, 200b, 200c. Thereafter, the third and fourth molds 30 and 40 are released, and the body 100, the terminals 200a, 200b, and 200c and the sealing portion 300 are taken out. As described above, a resin molded article is produced.

In the case of the resin molded article, when the body 100 is molded, the cut-out portion 220a is sandwiched between the convex portion 11 of the first mold 10 and the first edge 13a1 of the projection 13a. maintain. The cut-out portion 230a is held between the convex portion 11 of the first mold 10 and the first edge 13b1 of the projection 13b. The cut-out portion 240a is held between the convex portion 11 of the first mold 10 and the first edge 13c1 of the projection 13c. In addition to this, the terminal bodies 210a, 210b, 210c are held between the convex portion 11 of the first mold 10 and the protrusion 22 of the second mold 20. Therefore, since the terminal 200a can be easily positioned and maintained inside the cavity C1, the terminal 200a can be miniaturized compared to the case where a separate positioning holding portion is formed in the terminal 200a. Moreover, it is also possible to reduce the size of the resin molded article. In addition, since the section portions 220a, 230a, and 240a are folded and bent at a right angle to the terminal body 210a, they are affected by the injection pressure when the first insulating resin R1 is injected into the cavity C1. easy. However, the cut-out portions 220a, 230a, and 240a are retained by being fitted to the convex portion 11 and the first edge of the projection, as described above. According to the injection pressure, it is possible to suppress the movement or deformation of the sectioning parts 220a, 230a, 240a of the terminals 200a, 200b, 200c. In addition, since the section portion 220a is guided between the convex portion 11 and the first edge 13a1 of the projection 13a by the inclined surface 13a3 of the first mold 10, the section portion 220a is convex. It can be easily inserted between the part 11 and the first edge 13a1. This also applies to the sectioning portions 230a and 240a.

In addition, the inclined surfaces 13a3, 13b3, 13c3 of the projections 13a, 13b, 13c of the first mold 10 are inclined so as to be spaced from the convex portion 11. Between the convex portion 11 and the first edges 13a1, 13b1, 13c1 of the projections 13a, 13b, 13c, if the segmented portions 220a, 230a, 240a are fitted and held, the inclined surfaces 13a3, 13b3, 13c3 ) And a space forming part of the cavity C1 is formed between the second surfaces 222a, 232a, and 242a of the section portions 220a, 230a, and 240a. Since the first insulating resin (R1) can be introduced into the space, the first edge (13a, 13b, 13c) of the second surfaces (222a, 232a, 242a) of the section portions (220a, 230a, 240a) 13a1, 13b1, 13c1), the second surfaces 222a, 232a, and 242a may be embedded in the resin.

Further, during the molding of the body 100, the terminals 200a, 200b, 200c are held and held between the protrusions 11 of the first mold 10 and the protrusions 22 of the second mold 20. do. For this reason, the concave part 140 corresponding to the outer shape of the projection 22 is formed on the second surface 112 of the body 100. Since the sealing portion 300 is filled in the concave portion 140, without increasing the thickness dimension of the resin molded article, it is possible to improve the insulating, waterproof and dustproof properties of the resin molded article. In addition, since the sealing portion 300 is filled in the concave portion 140 and fixed to the body 100 and the terminals 200a, 200b, and 200c, it does not easily fall off.

In addition, the concave portion 140 has a shape having a central portion 141 and a plurality of branch portions 142 extending radially from the central portion 141. As described above, the branch portion 142 has a narrow and long elongated shape. For this reason, when the sealing part 300 is molded, the second insulating resin R2 flows from the central part 141 to the branch part 142 by injecting the second insulating resin R2 into the central part 141. do. That is, since the fluidity of the second insulating resin R2 is improved, the second insulating resin R2 (the sealing portion 300) can be easily filled with respect to the concave portion 140.

In addition, the method for manufacturing the resin molded article, mold for molding, and resin molded article described above is not limited to the above-described embodiments, and can be arbitrarily designed and changed within the scope of the claims. It will be described in detail below.

In the above embodiment, the body 100 is said to have a base 110, a side wall 120, a concave portion 130a, 130b, 130c, a concave portion 140, and a convex portion 150 . However, the body has a base, a side wall that is installed on the base and has a wall surface, and a concave portion formed on the side wall, wherein the concave portion is an edge on the opening side of the concave portion, and further includes a second surface of the section. As long as it has a first edge in contact, a second edge that is the bottom edge of the recess, and an inclined surface or a curved curved surface that is inclined to be spaced from the section from the first edge to the second edge. , It is possible to change the design arbitrarily. At least one said recess may be sufficient. It can be said that the length dimension of the concave portion is substantially the same as the dimension in the longitudinal direction of the concave portion of the section. Moreover, the length dimension of a recessed part can be made longer than the dimension of the said recessed part in the longitudinal direction, and it can also be shortened. Moreover, the 1st edge can be made into the edge of the opening part side (one side of 3rd direction Z) of the recessed part of a curved surface. The second edge can be an edge of the bottom side (the other side of the third direction Z) of the concave portion of the curved surface. In addition, the concave portion 140 may be omitted.

In the above embodiment, the side wall 120 is said to be an annular shape installed on the periphery of the base 110. However, as long as the side wall is installed on the base and has a wall surface, it is possible to arbitrarily change the design. For example, the side wall can be designed and changed into a shape of a substantially rectangular shape when viewed from a plane, a substantially arc shape when viewed from a plane, or a U-shape when viewed from a plane. Also in this case, it is possible to divide a space by a side wall and a base. The space is any space. The accommodation space S can also be used as an arbitrary space.

In the above embodiment, it is said that the terminal 200a has a terminal body 210a, fragments 220a, 230a, 240a, and connecting portions 250a, 260a. But. The terminal can be arbitrarily changed in design as long as it has at least a section. For example, the terminal can be configured to have a terminal body and a section that is connected to the terminal body and is bent with respect to the terminal body. The terminal body can be configured to be embedded in the base so as to partially expose it from at least one of the first and second surfaces of the base. Further, the terminal body can be configured to be embedded in the base so as to partially expose it from recesses formed on at least one of the first and second surfaces of the base. The fragment part is not limited to a bent form folded at a right angle to the terminal body, as in the above embodiment. That is, the bending angle with respect to the terminal body of the section can be arbitrarily set.

In the above embodiment, it is said that the section portion 220a is buried in the side wall 120 such that the first surface 221a is partially exposed from the wall surface 121 of the side wall 120. But. As long as the section has a first surface and a second surface opposite thereto, the first surface is exposed from the wall surface of the side wall, and the second surface is embedded in the side wall so as to contact the first edge of the concave portion of the side wall. It is possible to change the design arbitrarily. For example, it is possible to make the section portion so as to be embedded in the side wall so that the entire area of the first surface is exposed from the side wall. In this respect, it is possible to change the design of the section portions 230a and 240a in this way. In addition, the terminals 200b and 200c can be omitted.

In the above embodiment, it is said that the tip ends of the connecting portions 250a and 260a of the terminal 200a protrude from the outer surface of the base 110. However, the connecting portion can be configured to protrude from the second surface of the body. Moreover, when connecting a connection means, such as a pin or a cable, inside the body to the terminal connection portion, the terminal connection portion can be configured so as not to protrude from the body. Also, it is possible to change the design of the terminals 200b and 200c in this way.

The sealing part 300 can be omitted. In the above embodiment, the sealing portion 300 includes a central portion 310 filled in the central portion 141 of the concave portion 140 and a plurality of branch portions filled in the branch portion 142 of the concave portion 140 ( 320). However, the design can be arbitrarily changed as long as the sealing portion is filled in the concave portion of the second surface of the body and is fixed to the portion exposed from the concave portion of the body and the terminal. That is, the sealing portion can be arbitrarily designed and changed according to the shape of the concave portion of the second surface of the body.

 In the above embodiment, the first mold 10 is said to have a convex portion 11, a concave portion 12, projections 13a, 13b, 13c, and a spool 14. However, the first mold has a convex portion that can be brought into contact with the first surface of the segmented portion of the terminal, and a protrusion formed at a distance from the convex portion, wherein the protrusion is an edge on the root side of the protrusion, and furthermore, the fragment A second edge that can be in contact with a second surface opposite to the first surface of the negative, a second edge that is an edge on the tip side of the protrusion, and between the convex portion from the first edge to the second edge. It is possible to change the design arbitrarily as long as it has an inclined or curved curved surface. For example, the first mold can be configured to have a concave portion, a convex portion formed in the concave portion, and a protrusion formed in the concave portion and spaced apart from the convex portion. In addition, the first edge can be an edge of the opening side (one side in the third direction Z) of the projection of the curved surface. The second edge can be an edge of the bottom side (the other side of the third direction Z) of the projection of the curved surface.

In the above embodiment, the protrusions 13a, 13b, and 13c are called protruding stems, but are not limited thereto. That is, the projection of the first mold in the present specification is a concept including both a convex portion and an elongated protruding stem. It can be said that the length dimension of the projection is substantially the same as the dimension of the projection in the longitudinal direction of the section. Moreover, the length dimension of the projection can be made longer than the dimension in the longitudinal direction of the projection of the section, and it is also possible to shorten it. In addition, at least one said projection may be sufficient.

 In the above embodiment, the second mold 20 is said to have a concave portion 21 and a projection 22. However, the second mold can be arbitrarily changed in design as long as it can form a cavity capable of accommodating at least a section of the terminal together with the first mold in a state where it is combined with the first mold.

In the method of manufacturing the resin molded article described above, at least one terminal section is inserted between the convex section of the first mold and the projection, and the first surface of the section is formed with the convex section and the second surface with the first edge of the projection. By abutting, the cut-out portion is sandwiched between the convex portion and the first edge, and in this state, the first and second molds are mold-closed, and at least the cut-out portion of the terminal is inside the first and second mold cavities. It is possible to change the design arbitrarily as long as it is placed, injected with an insulating resin into the cavity, and cured to embed the section in the insulating resin.

In the above embodiment, when the first and second molds 10 and 20 are mold-closed, the terminals 200a are accommodated into the cavities C1 of the first and second molds 10 and 20. It is said that the terminal body 210a of the terminal 200a is fitted and held by the protrusions 11 of the first mold 10 and the convex portions 11 of the first mold 10. However, when the first and second molds are mold-closed, it is possible to change the design arbitrarily as long as at least the section of the terminal is disposed inside the first and second mold cavities. In addition, it is possible to hold the section of the terminal between the convex portion of the first mold and the first edge of the projection, while maintaining the terminal body of the terminal partially or entirely in the first and second molds. In addition, it is also possible to place the terminal body of the terminal into the cavity of the first and second molds by sandwiching and holding the section of the terminal between the first mold convex portion and the first edge of the projection.

In the above embodiment, it is said that the manufacturing method of the resin molded article has a step of molding the sealing portion 300 using the third and fourth molds 30 and 40. However, in the method for manufacturing a resin molded product, it is possible to omit the process using the third and fourth molds.

In addition, in the above embodiment, examples of materials, shapes, dimensions, numbers, and arrangements constituting each part of the resin molded article and the molding die are described, and as long as the same function can be realized, design changes can be made arbitrarily. Do.

100: body
110: bass
111: page 1
112: p. 2
120: sidewall
121: wall
122: wall
130a: recess
131a: Edge 1
132a: Second Edge
133a: Slope
130b: recess
131b: first edge
132b: Second Edge
133b: Slope
130c: recess
131c: First Edge
132c: Second Edge
133c: Slope
140: recess
141: central
142: eggplant
200a: terminal
210a: terminal body
211a: front page
212a: page 2
220a: intercept
221a: page 1
222a: p. 2
230a: intercept
231a: page 1
232a: page 2
240a: intercept
241a: front page
242a: page 2
250a: connection
260a: connection
200b: terminal
210b: terminal body
211b: front page
212b: page 2
220b: connection
200c: terminal
210c: terminal body
211c: front page
212c: page 2
220c: connection
300: sealing portion
310: Central
320: eggplant
Y: first direction
X: second direction
Z: 3rd direction
10: first mold
11: Convexity
12: recess
13a: projection
13a1: first edge
13a2: second edge
13a3: Slope
13b: projection
13b1: first edge
13b2: second edge
13b3: Slope
13c: projection
13c1: first edge
13c2: second edge
13c3: slope
14: spool
20: second mold
21: recess
22: Turn
22a: Central
22b: eggplant
30: third mold
31: convexity
32: recess
33a: projection
33b: projection
33c: projection
40: fourth mold
41: recess
42: spool
R1: 1st insulation resin
R2: Second insulation resin

Claims (9)

At least, the first and second molds having a cavity that can accommodate a section of the terminal are provided.
The first mold includes a convex portion contactable with the first surface of the section portion,
It has a projection formed at intervals in the convex portion,
The protrusion is an edge on the root side of the protrusion, and further includes a first edge contactable with a second surface opposite to the first surface of the section,
A second edge, which is an edge on the tip side of the projection,
A molding mold having an inclined surface or a curved curved surface that is inclined to be spaced from the convex portion from the first edge to the second edge. According to claim 1,
A mold for molding in the cavities of the first and second molds, wherein the terminal body of the terminal is connected to the terminal body, and the bent portion folded and bent with respect to the terminal body is accommodated. According to claim 2,
The first and second molds are molds for forming the terminal body while receiving the terminal body in the cavity and partially retaining. As a manufacturing method of a resin molded article for producing a resin molded article using the molding mold according to claim 1,
By inserting a section of the terminal between the projection of the first mold and the projection, the first surface of the section by contacting the projection with the projection, and the second surface of the projection with the first edge of the projection, The section is held by the convex portion and the first edge,
In this state, the first and second molds are mold-closed, and at least the section of the terminal is disposed inside the first and second mold cavities,
A method of manufacturing a resin molded article in which an insulating resin is injected into the cavity and cured to embed the section in the insulating resin. The method of claim 4,
When the section of the terminal is disposed inside the first and second mold cavities, the terminal body of the terminal is connected to the terminal body, and the folded section is bent with respect to the terminal body, the cavity A method for manufacturing a resin molded product disposed therein. The method of claim 5,
The first and second molds are a method for manufacturing a resin molded article that accommodates the terminal body inside the cavity and partially fits and retains it. A terminal having an intersecting portion having a first surface and a second surface opposite to the first surface,
It has a body,
The body, the base,
It is installed on the base, and also has a side wall with a wall surface,
It has a recess formed in the side wall,
The section portion is embedded in the side wall so that the first surface is exposed from the wall surface of the side wall,
The concave portion is an edge on the opening side of the concave portion, and further includes a first edge contacting the second surface of the segmented portion,
A second edge that is an edge of the bottom of the recess,
A resin molded article having an inclined surface or a curved curved surface inclined to be spaced from the section from the first edge to the second edge. The method of claim 7,
The terminal has a terminal body embedded in the base in addition,
The said molded part is connected to the said terminal main body, and is also molded and bent with respect to the said terminal main body. The method of claim 7 or 8,
The body additionally has an accommodation space partitioned by the side wall,
The wall surface is a resin molded article that is a wall surface of the accommodation space.

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