JP2014073665A - Resin molded article and manufacturing method of resin molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin molded article capable of achieving reduction of a thickness dimension and to provide a manufacturing method of the resin molded article.SOLUTION: A resin molded article has a body made from an insulation resin 100, a terminal 200a and a seal portion made from the insulation resin 300. The body 100 has a first surface 111, a second surface 112 opposite the first surface 111, and a concavity 140 arranged on the second surface 112. The terminal 200a is embedded in the body 100 so that it is partially exposed from the concavity 140. The seal portion 300 is filled in the concavity 140 and fixed to the body 100 and the terminal 200a.

Description

  The present invention relates to a resin molded product and a method for producing a resin molded product.

  This type of resin molded product includes a terminal and first and second bodies made of insulating resin. The terminal is embedded in the first body so as to be partially exposed from the first surface of the first body and partially exposed from the recess of the second surface of the first body. The concave portion of the first body is formed by a convex portion of a mold that partially holds the terminal when insert molding the terminal into the first body. The second body is provided so as to cover the outer periphery of the first body and the entire area of the second surface, and closes the recess. For this reason, the insulation, dustproofness, and waterproofness of the resin molded product are improved (see Patent Document 1).

Japanese Patent Laid-Open No. 03-112025

  Since the second body is provided so as to cover the entire back surface of the first body, the thickness of the resin molded product is increased.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a resin molded product and a method for manufacturing the resin molded product capable of reducing the thickness dimension.

  In order to solve the above-mentioned problem, the first resin molded product of the present invention includes an insulating resin body, a terminal, and an insulating resin seal. The body has a first surface, a second surface opposite to the first surface, and a recess provided in the second surface. The terminal is embedded in the body so as to be partially exposed from the recess. The seal portion is filled in the concave portion of the body and is fixed to the body and the terminal.

  In the case of the resin molded product of such an aspect, the thickness of the resin molded product can be reduced because the seal portion is only filled in the concave portion of the second surface of the body. Moreover, since the seal portion is filled in the recess and is fixed to the body and the terminal, it is difficult to peel off.

  The recess can be elongated. The length dimension of at least a part of the recess may be smaller than the length dimension of the terminal, and the width dimension of the part of the recess may be smaller than the width dimension of the terminal.

  In the case of such a molded resin product, the fluidity of the seal portion when the recess is filled with the seal portion is improved.

  A plurality of the terminals can be provided. The plurality of terminals may be embedded in the body so as to be partially exposed from the recess.

  In the case of the resin molded product of such an aspect, the portion exposed from the concave portions of the plurality of terminals is covered by filling the single concave portion with the seal portion. Therefore, the seal part can be easily filled.

  The concave portion may include a central portion and a plurality of branch portions extending radially from the central portion.

  In the case of the resin molded product of such an aspect, when the center portion is filled with the seal portion, it flows into the branch portion. Therefore, it becomes easy to fill the recess with the seal portion.

  At least one length dimension of the branch portion may be smaller than a length dimension of the terminal, and at least one width dimension of the branch portion may be smaller than a width dimension of the terminal.

  In the case of such a molded resin product, the fluidity of the seal portion when the recess is filled with the seal portion is improved.

  A plurality of the terminals can be provided. The plurality of terminals may be partially exposed from at least one of the branch portions.

  In the case of the resin molded product of such an aspect, the portion exposed from the branch portions of the plurality of terminals is covered by filling one branch portion with the seal portion. Therefore, the seal part can be easily filled.

  In the method for producing a resin molded product of the present invention, the terminal is accommodated in the cavities of the first and second molds, and the terminal is partially disposed between the first mold and the protrusion of the second mold. To hold. By injecting and curing a first insulating resin into the cavities of the first and second molds, the terminal is insert-molded into the first insulating resin, and the terminal is inserted into the first insulating resin. A recess having a shape corresponding to the protrusion that is partially exposed is formed. Thereafter, the first and second molds are released to take out the first insulating resin and the terminals. Thereafter, the first insulating resin and the terminal are accommodated in the cavities of the third and fourth molds, the concave portion of the first insulating resin is closed with the fourth mold, and the fourth mold and the first mold are closed. The second insulating resin is injected into a space defined by the concave portion of the one insulating resin and cured. Thereafter, the third and fourth molds are released to take out the first and second insulating resins and the terminals.

  In the case of the method for producing a resin molded product of this aspect, since the second insulating resin is injected into the concave portion of the first insulating resin and cured, the thickness of the resin molded product is used to close the concave portion of the first insulating resin. An increase in dimensions can be prevented. Moreover, since the second insulating resin is injected into the concave portion of the first insulating resin and hardened, it is difficult to peel off.

  The protrusion can be elongated. The length dimension of at least a part of the protrusion may be smaller than the length dimension of the terminal, and the width dimension of the part of the protrusion may be smaller than the width dimension of the terminal.

  In the case of the method for producing a resin molded product of this aspect, the length dimension of at least a part of the concave portion of the first insulating resin formed by the protrusion is smaller than the length dimension of the terminal and the part of the concave part is formed. The width dimension is smaller than the terminal width dimension. Therefore, the fluidity of the second insulating resin when the second insulating resin is injected into the recess is improved.

  When the plurality of terminals are accommodated in the cavities of the first and second molds, the terminals may be partially sandwiched between the first mold and the protrusions of the second mold. Is possible.

  In the case of the method of manufacturing a resin molded product of this aspect, since a plurality of terminals are sandwiched at once between the projections of the first mold and the second mold, positioning of the terminals within the cavity is easy. Become.

  The protrusion may include a center portion and a plurality of branch portions extending radially from the center portion.

  In the case of the method for producing a resin molded product of this aspect, the concave portion of the first insulating resin formed by the protrusion has a shape having a central portion and a plurality of branch portions extending radially from the central portion. When the second insulating resin is filled in the center of the recess, it flows into the branch. Therefore, it becomes easy to fill the recess with the second insulating resin.

  A method for producing a resin molded product, wherein at least one length dimension of the branch part is smaller than a length dimension of the terminal and at least one width dimension of the branch part is smaller than a width dimension of the terminal.

  According to the method of manufacturing a resin molded product of this aspect, the length dimension of at least one branch portion of the recess of the first insulating resin formed by the branch portion of the protrusion is smaller than the length dimension of the terminal. The width dimension of the branch portion is smaller than the width dimension of the terminal. Therefore, the fluidity of the second insulating resin when the second insulating resin is injected into the branch portion of the recess is improved.

  When the plurality of terminals are accommodated in the cavities of the first and second molds, the terminals are disposed between the first mold and at least one branch of the protrusion of the second mold. It is possible to make it partially pinch.

  In the case of the method for producing a resin molded product of this aspect, the plurality of terminals are sandwiched at once between the first mold and the branch of the second mold, It becomes easy to position.

It is the perspective view represented from the front of the resin molded product which concerns on the Example of this invention, a plane, and the right side. It is the perspective view represented from the back surface, bottom surface, and right side surface of the said resin molded product. It is a bottom face of the resin molded product. It is a figure showing the part embedded in the body of the terminal on the bottom surface of the resin molded product. It is a figure showing the part embedded in the body of the terminal, which is the bottom of the body of the resin molded product and the terminal. It is 3A-3A sectional drawing in FIG. 1A of the said resin molded product. It is 3B-3B sectional drawing in FIG. 2A of the said resin molded product. It is 3C-3C sectional drawing in FIG. 1A of the said resin molded product. It is the perspective view represented from the front, the plane, and the right side of the terminal of the said resin molded product. It is the perspective view represented from the front, the plane, and the right side of the sealing part of the said resin molded product. It is a figure which shows the process of the manufacturing method of the said resin molded product, Comprising: It is a figure which shows the cross section corresponding to FIG. 3A. It is a figure which shows the process of the manufacturing method of the said resin molded product, Comprising: It is a figure which shows the cross section corresponding to FIG. 3B. It is a figure which shows the process of the manufacturing method of the said resin molded product, Comprising: It is a figure which shows the cross section corresponding to FIG. 3C.

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

  As shown in FIGS. 1A to 3C, the body 100 is a molded product made of an insulating resin. The body 100 includes a base 110, a side wall 120, recesses 130 a, 130 b, 130 c, a recess 140 (this corresponds to a recess in the body of the claims), and a protrusion 150. . The base 110 has a first surface 111 (which corresponds to the first surface of the body of the claims) and a second surface 112 opposite to the first surface 111 (which is the body of the claims). Corresponding to the second surface). An annular side wall 120 is erected on the peripheral edge of the first surface 111 of the base 110. On the central part of the circular part of the first surface 111 of the base 110, a cylindrical convex part 150 is erected. A concave accommodation space S is defined by the base 110, the side wall 120, and the convex portion 150. The side wall 120 has a wall surface 121 on the housing space S side and a wall surface 122 on the opposite side.

  The second surface 112 of the base 110 is provided with a recess 140 as shown in FIGS. 1B to 3C. The recess 140 has a center portion 141 and a plurality of branch portions 142. The central portion 141 is a substantially truncated cone-shaped recess as shown in FIGS. 3A and 3B. The branch part 142 is a long concave part and extends radially from the central part 141. The length dimension of the branch part 142 is smaller than the length dimension of the terminal main body 210a to be described later of the terminal 200a. The width dimension of the branch part 142 is smaller than the width dimension of the terminal body 210a.

  As shown in FIGS. 2B to 3C, a terminal 200 a is embedded in the base 110 and the side wall 120. On one side of the terminal 200a of the base 110 in the second direction X, as shown in FIGS. 2B to 3C, a terminal 200b is embedded. On the other side in the second direction X of the terminal 200a of the base 110, a terminal 200c is embedded.

  The terminal 200a is a metal plate. As shown in FIGS. 2B to 4, the terminal 200 a includes a terminal main body 210 a, section portions 220 a, 230 a, 240 a, and connection portions 250 a, 260 a. The terminal body 210a has a first surface 211a and a second surface 212a opposite to the first surface 211a. The terminal body 210a is disposed on the base 110 such that the first surface 211a is partially exposed from the first surface 111 of the base 110 and the second surface 212a is partially exposed from the branch portion 142 of the recess 140 of the base 110. Embedded. The exposed portion of the first surface 211a of the terminal body 210a is disposed around the convex portion 150.

  The section 220a is a plate that is connected to one end of the terminal body 210a in the length direction and is bent at a right angle to the terminal body 210a. The section 220a has a first surface 221a and a second surface 222a on the opposite side. The section 220a is embedded in the side wall 120 such that the first surface 221a is exposed from the wall surface 121 of the side wall 120. The section 220a is located between the accommodation space S and a recess 130a described later.

  The section 230a is a plate connected to one end of the terminal body 210a in the width direction and bent at a right angle with respect to the terminal body 210a. The section 230a has a first surface 231a and a second surface 232a on the opposite side. The section 230 a is embedded in the side wall 120 so that the first surface 231 a is exposed from the wall surface 121 of the side wall 120. The section 230a is located between the accommodation space S and a later-described recess 130b.

  The section 240a is a plate connected to the other end in the width direction of the terminal body 210a and bent at a right angle to the terminal body 210a. The section 240a has a first surface 241a and a second surface 242a on the opposite side. The section 240 a is embedded in the side wall 120 such that the first surface 241 a is exposed from the wall surface 121 of the side wall 120. The section 240a is located between the accommodation space S and a later-described recess 130c. The segment part 230a and the segment part 240a face each other and face the direction orthogonal to the segment part 220a.

  The connecting portion 250a is connected to one side in the first direction Y of the segment 230a at one end in the width direction of the terminal body 210a and extends to one side in the second direction X. Portions other than the tip of the connecting portion 250a are embedded in the base 110. The distal end portion of the connecting portion 250a protrudes from the outer surface of the base 110. The distal end portion of the connecting portion 250 a is bent so that the lower surface thereof is substantially the same height as the second surface 112 of the base 110. The connecting portion 260a is connected to one side in the first direction Y of the section 240a at the other end in the width direction of the terminal body 210a and extends to the other side in the second direction X. Portions other than the tip of the connection portion 260a are embedded in the base 110. The distal end portion of the connection portion 260a protrudes from the outer surface of the base 110. The distal end portion of the connection portion 260 a is bent so that the lower surface thereof is substantially the same height as the second surface 112 of the base 110.

  The terminal 200b is a metal plate. As shown in FIGS. 2B to 4, the terminal 200 b includes a terminal main body 210 b and a connection portion 220 b. The terminal body 210b has a first surface 211b and a second surface 212b on the opposite side. The terminal body 210b is disposed on the base 110 such that the first surface 211b is partially exposed from the first surface 111 of the base 110 and the second surface 212b is partially exposed from the branch portion 142 of the recess 140 of the base 110. Embedded. 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 of the terminal body 210b in the first direction Y and extends in the second direction X. Portions other than the tip of the connection portion 220b are embedded in the base 110. The tip of the connection part 220b protrudes from the outer surface of the base 110. The distal end portion of the connecting portion 220b is bent so that the lower surface thereof is substantially the same height as the second surface 112 of the base 110.

  The terminal 200c is a metal plate. As shown in FIGS. 2B to 4, the terminal 200 c includes a terminal main body 210 c and a connection portion 220 c. The terminal body 210c has a first surface 211c and a second surface 212c on the opposite side. The terminal body 210c is formed on the base 110 such that the first surface 211c is partially exposed from the first surface 111 of the base 110 and the second surface 212c is partially exposed from the branch portion 142 of the recess 140 of the base 110. Embedded. The exposed portion of the first surface 211c of the terminal body 210c is disposed around the convex portion 150. The connection part 220c is connected to one end of the terminal body 210c in the first direction Y and extends in the second direction X. Portions other than the tip of the connection portion 220c are embedded in the base 110. The distal end portion of the connection portion 220 c protrudes from the outer surface of the base 110. The distal end portion of the connection portion 220c is bent so that the lower surface thereof is substantially the same height as the second surface 112 of the base 110.

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

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

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

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

  As shown in FIGS. 1B to 2B, FIGS. 3A to 3C, and FIG. 5, the seal portion 300 is an insulating resin that fills the recess 140 and is fixed to the body 100 and the terminals 200 a, 200 b, and 200 c. The seal portion 300 has the other surface in the third direction Z flush with the second surface 112 of the body 100. The seal part 300 has a center part 310 and a plurality of branch parts 320. As shown in FIGS. 3A and 3B, the center portion 310 is a substantially truncated cone, and is filled in the center portion 141 of the recess 140. The branch part 320 is a long bulge that extends radially from the central part 310 and fills the branch part 142 of the recess 140. A plurality of branch portions 320 of the branch portions 320 are fixed to the body 100 and the terminal body 210a of the terminal 200a. A plurality of other branch portions 320 of the branch portions 320 are fixed to the body 100, the terminal body 210a of the terminal 200a, and the terminal body 210b of the terminal 200b. The remaining plurality of branches 320 of the branches 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 dies used to manufacture the above-described resin molded product will be described with reference to FIGS. 6A to 6C. The first molding die includes first and second molds 10 and 20. The second molding die has third and fourth molds 30 and 40.

  The first mold 10 has a convex part 11, a concave part 12, protrusions 13 a, 13 b, 13 c and a sprue 14. The convex portion 11 has a shape corresponding to the shape of the housing space S of the body 100 of the resin molded product. The concave portion 12 is provided around the convex portion 11 and has a shape corresponding to the outer shape of the side wall 120 of the body 100. The sprue 14 is provided on the convex portion 11.

  As illustrated in FIG. 6A, the protrusion 13 a is provided on the bottom surface of the recess 12 with a space from the protrusion 11 to one side in the first direction Y. The protrusion 13 a has a shape corresponding to the recess 130 a of the body 100. In other words, the protrusion 13 a is a long ridge extending in the second direction X. The protrusion 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 base side of the protrusion 13a of the inclined surface 13a3. The distance between the first edge 13a1 and the convex portion 11 is substantially the same as the distance from the first surface 221a to the second surface 222a of the intercept portion 220a (that is, the thickness dimension of the intercept portion 220a). The second edge 13a2 is an edge on the tip side of the protrusion 13a of the inclined surface 13a3. The inclined surface 13a3 is inclined so as to be separated from the convex portion 11 from the first edge 13a1 to the second edge 13a2.

  As shown in FIG. 6C, the protrusion 13 b is provided on the bottom surface of the concave portion 12 with a gap from the convex portion 11 to one side in the second direction X. The protrusion 13 b has a shape corresponding to the recess 130 b of the body 100. That is, the protrusion 13b is an elongated protrusion extending in the first direction Y. The protrusion 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 base side of the protrusion 13b of the inclined surface 13b3. The distance between the first edge 13b1 and the convex portion 11 is substantially the same as the distance from the first surface 231a to the second surface 232a of the intercept portion 230a (that is, the thickness dimension of the intercept portion 230a). The second edge 13b2 is an edge on the tip side of the protrusion 13b of the inclined surface 13b3. The inclined surface 13b3 is inclined so as to be separated from the convex portion 11 from the first edge 13b1 to the second edge 13b2.

  As shown in FIG. 6C, the protrusion 13 c is provided on the bottom surface of the recess 12 with a gap from the protrusion 11 to the other side in the second direction X. The protrusion 13 c has a shape corresponding to the recess 130 c of the body 100. That is, the protrusion 13c is a long protrusion extending in the first direction Y. The protrusion 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 base side of the protrusion 13c of the inclined surface 13c3. The distance between the first edge 13c1 and the convex portion 11 is substantially the same as the distance from the first surface 241a to the second surface 242a of the intercept portion 240a (that is, the thickness dimension of the intercept portion 240a). The second edge 13c2 is an edge on the tip side of the protrusion 13c of the inclined surface 13c3. The inclined surface 13c3 is inclined so as to be separated from the convex portion 11 from the first edge 13c1 to the second edge 13c2.

  The second mold 20 has a recess 21 and a protrusion 22. The recess 21 has a shape corresponding to the outer shape of the base 110 of the body 100. The protrusion 22 is provided on the bottom surface of the recess 21. The protrusion 22 has a center portion 22a and a plurality of branch portions 22b. The center portion 22 a has a shape corresponding to the inner shape of the center portion 141 of the recess 140 of the body 100. The branch part 22b is a long ridge corresponding to the inner shape of the branch part 142 of the recess 140 of the body 100, and extends radially from the central part 22a. The length dimension of the branch part 22b is smaller than the length dimension of the terminal main body 210a of the terminal 200a. The width dimension of the branch part 22b is smaller than the width dimension of the terminal body 210a.

  In a state where the first and second molds 10 and 20 are combined with each other, the convex portion 11, the concave portion 12, the projections 13 a, 13 b and 13 c, the concave portion 21 and the projection 22 are the cavities of the first and second molds 10 and 20. Partition C1. 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 has substantially the same shape as the first mold 10 except that the third mold 30 is different from the first mold 10 in that the sprue 14 is not provided. The fourth mold 40 has substantially the same shape as the second mold 20 except that the fourth mold 40 is different from the second mold 20 in that it does not have the protrusions 22 and has the sprue 42. In a state where the third and fourth molds 30 and 40 are combined with each other, the convex portion 31, the concave portion 32, the projections 33 a, 33 b and 33 c, and the concave portion 41 define the cavity C 2 of the third and fourth molds 30 and 40. Partition. The cavity C2 has a shape corresponding to the outer shape of the resin molded product.

  Hereinafter, a method of manufacturing the resin molded product using the first and second molds 10 and 20 and the third and fourth molds 30 and 40 will be described with reference to FIGS. 6A to 6C. First, the intercept portion 220a of the terminal 200a is inserted between the convex portion 11 and the projection 13a, the intercept portion 230a of the terminal 200a is inserted between the convex portion 11 and the projection 13b, and the intercept portion 240a of the terminal 200a is convex. It inserts between the part 11 and the protrusion 13c. Then, the first surface 221a of the section 220a contacts the convex portion 11, and the second surface 222a of the section 220a contacts the first edge 13a1 of the protrusion 13a. That is, the section 220a is sandwiched 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 protrusion 13a do not contact the second surface 222a of the section 220a. The first surface 231a of the intercept portion 230a abuts on the convex portion 11, and the second surface 232a of the intercept portion 230a abuts on the first edge 13b1 of the protrusion 13b. That is, the section 230a is sandwiched between the convex portion 11 and the first edge 13b1 of the projection 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 intercept portion 240a abuts on the convex portion 11, and the second surface 242a of the intercept portion 240a abuts on the first edge 13c1 of the protrusion 13c. That is, the segment 240a is sandwiched 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 clamped. Then, the terminals 200a, 200b, and 200c are accommodated in the cavities C1 of the first and second molds 10 and 20, and the terminal bodies 210a, 210b, and 210c of the terminals 200a, 200b, and 200c are the convex portions of the first mold 10. 11 and the protrusion 22 of the second mold 20. Specifically, the terminal main body 210 a is sandwiched between the convex portion 11 and a part of the branch portions 22 b of the protrusion 22. The terminal main body 210a and the terminal main body 210b are sandwiched between the convex portion 11 and another branch portion 22b of the branch portions 22b of the protrusion 22. The terminal main body 210 a and the terminal main body 210 c are sandwiched between the convex portion 11 and the remaining branch portion 22 b of the branch portions 22 b of the protrusion 22.

  Thereafter, the first insulating resin R1 is injected from the sprue 14 into the cavities C1 of the first and second molds 10 and 20, and filled in 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 recess 140 corresponding to the shape of the protrusion 22 is formed on the second surface 222a of the body 100, and recesses 130a, 130b, and 130c corresponding to the shape of the protrusions 13a, 13b, and 13c are formed on the side wall 120 of the body 100. In this way, the terminals 200a, 200b, and 200c are insert-molded into the body 100 (first insulating resin R1).

  Specifically, the terminal bodies 210 a, 210 b, and 210 c are embedded in the base 110 of the body 100. Accordingly, the first surfaces 211a, 211b, and 211c of the terminal bodies 210a, 210b, and 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 a part of the branch portion 142 of the recess 140 of the body 100. The second surfaces 212a and 212b of the terminal bodies 210a and 210b are partially exposed from another branch 142 of the recess 140 of the body 100. The second surfaces 212a and 212c of the terminal bodies 210a and 210c are partially exposed from the remaining branches 142 of the recess 140 of the body 100. Portions other than the tip portions of the connection portions 250a, 260a, 220b, and 220c are embedded in the base 110 of the body 100, and the tip portions protrude outside the body 100. The sections 220a, 230a, and 240a are embedded in the side wall 120 of the body 100. As a result, the first surfaces 221 a, 231 a, and 241 a of the sections 220 a, 230 a, and 240 a are exposed from the wall surface 121 of the sidewall 120. The second surfaces 222a, 232a, 242a of the sections 220a, 230a, 240a are in contact with the first edges 131a, 131b, 131c of the recesses 130a, 130b, 130c, and the inclined surfaces 133a, 133b, 133c of the recesses 130a, 130b, 130c. Covered with resin inside. 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 recess 140 of the body 100 is closed with the fourth mold 40. Thereby, a space is defined by the fourth mold 40 and the concave portion 140 of the body 100. Thereafter, the second insulating resin R2 is injected from the sprue 14 into the space to fill the space (concave portion 140). Thereafter, the second insulating resin R2 is cured. In this way, the second insulating resin R2 is molded as the seal portion 300. Thereby, the seal part 300 is fixed to the body 100 and the terminals 200a, 200b, and 200c. Thereafter, the third and fourth molds 30 and 40 are released, and the body 100, the terminals 200a, 200b, and 200c, and the seal portion 300 are taken out. A resin molded product is manufactured as described above.

  In the case of the resin molded product, when the body 100 is molded, the terminals 200a, 200b, and 200c are sandwiched between the convex portion 11 of the first mold 10 and the protrusion 22 of the second mold 20. Therefore, a recess 140 corresponding to the outer shape of the protrusion 22 is formed on the second surface 112 of the body 100. Since the concave portion 140 is filled with the seal portion 300, the insulating property, waterproof property, and dustproof property of the resin molded product can be improved without increasing the thickness dimension of the resin molded product. In addition, since the seal portion 300 is filled in the recess 140 and is fixed to the body 100 and the terminals 200a, 200b, and 200c, it is difficult to peel off.

  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. The branch part 142 has an elongated shape as described above. For this reason, when the sealing part 300 is molded, the second insulating resin R2 flows into the branch part 142 from the central part 141 by injecting the second insulating resin R2 into the central part 141. That is, since the fluidity of the second insulating resin R2 is improved, the second insulating resin R2 (seal part 300) can be easily filled into the recess 140.

  In addition, when the body 100 is molded, the section 220a is sandwiched between the convex portion 11 of the first mold 10 and the first edge 13a1 of the projection 13a. The section 230a is sandwiched between the convex portion 11 of the first mold 10 and the first edge 13b1 of the projection 13b. The section 240a is sandwiched between the convex portion 11 of the first mold 10 and the first edge 13c1 of the projection 13c. In addition, the terminal bodies 210 a, 210 b, and 210 c are sandwiched 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 held in the cavity C1, the terminal 200a can be reduced in size and the resin molded product can be reduced in size compared to the case where a separate positioning holding portion is provided in the terminal 200a. Can be achieved.

  Further, the inclined surfaces 13 a 3, 13 b 3, 13 c 3 of the protrusions 13 a, 13 b, 13 c of the first mold 10 are inclined so as to be separated from the convex portion 11. When the sections 220a, 230a, 240a are sandwiched between the convex portion 11 and the first edges 13a1, 13b1, 13c1 of the projections 13a, 13b, 13c, the inclined surfaces 13a3, 13b3, 13c3 and the sections 220a, 230a , 240a, a space forming a part of the cavity C1 is formed between the second surfaces 222a, 232a, and 242a. Since the first insulating resin R1 can be caused to flow into the space, the second surfaces 222a, 232a, and 242a of the sections 220a, 230a, and 240a are brought into contact with the first edges 13a1, 13b1, and 13c1 of the protrusions 13a, 13b, and 13c. Regardless of the contact, the second surfaces 222a, 232a, and 242a can be embedded in the resin.

  In addition, the resin molded product, the molding die, and the method for manufacturing the resin molded product described above are not limited to the above-described embodiments, and can be arbitrarily changed in design within the scope of the claims. . Details will be described below.

  In the above embodiment, the body 100 includes the base 110 having the first and second surfaces 111 and 112, the side wall 120, the recesses 130a, 130b, and 130c, the recess 140, and the protrusion 150. did. However, the design of the body can be arbitrarily changed as long as it has a first surface, a second surface opposite to the first surface, and a recess provided in the second surface. For example, the body can be plate-shaped or block-shaped. In this case, the body can be configured to include a first surface which is an arbitrary surface, a second surface opposite to the first surface, and a recess provided in the second surface.

  In the above embodiment, the recess 140 is provided on the second surface 112 of the body 100 and has a center portion 141 and a plurality of branch portions 142, and the branch portions 142 are the terminal bodies 210a of the terminals 200a, 200b, and 200c, 210b and 210c are partially exposed. However, the design of the recess can be arbitrarily changed as long as it is provided on the second surface of the body and at least one terminal is partially exposed. For example, the design of the concave portion can be changed to a circular or polygonal concave portion. Furthermore, the design of the recess can be changed to a long shape. It is preferable that the length dimension of at least a part of the recess is smaller than the length dimension of the terminal and the width dimension of the part of the recess is smaller than the width dimension of the terminal. The recess may be configured to extend along the length direction of the terminal. In the above embodiment, the branch portion 142 of the recess 140 has a length dimension smaller than that of the terminal main body 210a of the terminal 200a and a width dimension smaller than that of the terminal main body 210a. However, the shape of the branch portion of the recess is not limited to the above shape, and can be arbitrarily changed in design. In addition, at least one of the branch portions of the recess may have the length dimension and the width dimension.

  In the above embodiment, the terminals 200a, 200b, and 200c are such that the terminal bodies 210a, 210b, and 210c are partially exposed from the first surface 111 of the body 100 and partially exposed from the recess 140 of the body 100. It is assumed that it is embedded in the body 100. However, the design of the terminal can be arbitrarily changed as long as it is embedded in the body so as to be partially exposed from the recess provided in the second surface of the body. For example, when the first and second surfaces of the body are provided with recesses, the terminals of the terminals are partially exposed from the recesses of the first surface of the body and the second surface is the second of the body. It is possible to have a configuration embedded in the body so as to be partially exposed from the concave portion of the surface.

  In the above-described embodiment, the tip portions of the connection 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. Further, in the case where connecting means such as a pin or a cable is connected to the terminal connecting portion within the body, the terminal connecting portion can be configured not to protrude from the body. The design of the terminals 200b and 200c can be similarly changed.

  In the above embodiment, the seal portion 300 has the center portion 310 filled in the center portion 141 of the recess 140 and the plurality of branch portions 320 filled in the branch portions 142 of the recess 140. However, the design of the seal portion can be arbitrarily changed as long as it 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 design of the seal portion can be arbitrarily changed in accordance with the shape of the recess on the second surface of the body. Further, in the above-described embodiment, the seal portion 300 has the other surface in the third direction Z flush with the second surface 112 of the body 100. However, the seal portion may have a surface on the other side in the third direction Z protruding from the second surface of the body, or may be recessed on one side in the third direction Z. In the former case, the fourth mold has a concave portion corresponding to the convex shape of the surface on the other side in the third direction Z of the seal portion. That is, the second insulating resin is injected into a space defined by the concave portion of the second surface of the body and the concave portion of the fourth mold to form the seal portion. In the latter case, the fourth mold has a convex portion corresponding to the concave shape of the other surface in the third direction Z of the seal portion. That is, the second insulating resin is injected into the space defined by the concave portion on the second surface of the body and the convex portion of the fourth mold, thereby forming the seal portion.

  In the above embodiment, the terminals 200a, 200b, 200c are accommodated in the cavities C1 of the first and second molds 10, 20, and the terminal bodies 210a, 210b, 210c of the terminals 200a, 200b, 200c are accommodated in the first mold 10. The protrusion 11 and the protrusion 22 of the second mold 20 are sandwiched. However, when the terminals are accommodated in the cavities of the first and second molds, the design can be arbitrarily changed as long as at least one terminal is held between the protrusions of the first mold and the second mold. is there.

  In the above embodiment, the cavity C1 of the first and second molds 10 and 20 is defined by the convex portion 11, the concave portion 12, the projections 13a, 13b, and 13c, the concave portion 21 and the projection 22. However, the design of the cavities of the first and second molds can be arbitrarily changed according to the shapes of the body and the terminals. For example, the first mold has a convex part, and the second mold is provided with a concave part into which the convex part is inserted, and a concave part of the second surface of the body provided in the concave part. It is possible to have a structure having a protrusion. In this case, the cavities of the first and second molds are defined by the protrusions of the first mold and the recesses and protrusions of the second mold. A first mold having a recess; a second mold having a protrusion inserted into the recess; and a protrusion provided on the protrusion and forming a recess on the second surface of the body. It is possible to have a configuration having In this case, the cavities of the first and second molds are defined by the concave portions of the first mold and the convex portions and protrusions of the second mold. The first mold has a first recess, and the second mold has a second recess and a projection provided in the second recess and forming a recess on the second surface of the body. It can be configured. In this case, the cavities of the first and second molds are defined by the first recesses of the first mold and the second recesses and protrusions of the second mold. Furthermore, as described above, when the recess is provided on the first surface of the body, the terminal is sandwiched between the protrusion provided on the first mold and the protrusion of the second mold when the cavity is accommodated. It is possible to change the design. At this time, the projection of the first mold forms a recess in the first surface of the body. The protrusion of the first mold can be provided on the convex part, the concave part or the first concave part of the first mold.

  In the above embodiment, the protrusion 22 of the second mold 20 has the center portion 22a and the plurality of branch portions 22b. However, the shape of the protrusion of the second mold can be arbitrarily changed according to the shape of the recess on the second surface of the body. That is, the shape of the protrusion of the second mold can be changed to a shape corresponding to the shape of the concave portion of the second surface of the body described above.

  In the above embodiment, the third mold 30 is substantially in the same shape as the first mold 10 except that the third mold 30 is different from the first mold 10 in that the sprue 14 is not provided. However, the third mold can be arbitrarily changed in design as long as it has a cavity configured with the fourth mold and can accommodate the body and the terminal embedded therein. In the above embodiment, the fourth mold 40 has substantially the same shape as the second mold 20 except that the fourth mold 40 does not have the protrusions 22 and has the sprue 42 except for the second mold 20. . However, the fourth mold has a cavity configured together with the third mold, closes the recess on the second surface of the body accommodated in the cavity, and forms a space defined by the fourth mold and the recess. It is possible to arbitrarily change the design as long as it can be formed.

  In the above embodiment, the cavity C2 of the third and fourth molds 30, 40 is defined by the convex portion 31, the concave portion 32, the projections 33a, 33b, 33c, and the concave portion 41. However, the cavities of the third and fourth molds can be arbitrarily changed according to the outer shape of the resin molded product. For example, the third mold may have a convex portion, and the fourth mold may have a concave portion into which the convex portion is inserted. In this case, the cavities of the third and fourth molds are defined by the convex portions of the third mold and the concave portions of the fourth mold. The third mold may have a concave portion, and the fourth mold may have a convex portion that is inserted into the concave portion. In this case, the cavities of the third and fourth molds are defined by the concave portions of the third mold and the convex portions of the fourth mold. The third mold may have a third recess, and the fourth mold may have a fourth recess. In this case, the cavities of the third and fourth molds are defined by the third recesses of the third mold and the fourth recesses of the fourth mold. Further, as described above, when the concave portion is provided on the first surface of the body, the design is changed so that the terminal is sandwiched between the protrusion provided on the third die and the fourth die when the cavity is accommodated. Is possible. At this time, the protrusion of the third mold is fitted into the recess of the first surface of the body. The protrusion of the third mold can be provided on the convex part, the concave part or the first concave part of the third mold.

  In the above embodiment, the material, shape, dimensions, number, arrangement, etc. constituting each part of the resin molded product and the molding die are described as an example, and are arbitrary as long as the same function can be realized. It is possible to change the design.

100... Body 110... Base 111... First surface (first surface of the body)
112 ... 2nd surface (2nd surface of a body)
120... Side wall 121... Wall 122... Wall 130 a .. Recess 131 a .. First edge 132 a .. Second edge 133 a .. Inclined surface 130 b ... Recess 131 b .. First edge 132 b ··· Second edge 133b · · Inclined surface 130c · · · recessed portion 131c · · · First edge 132c · · Second edge 133c · · · Inclined surface 140 · · · · concave portion 141 · · · center portion 142 · · · branch 200a ... terminal 210a ... terminal body 211a ... first surface 212a ... second surface 220a ... section 221a ... first surface 222a ... second surface 230a ... section 231a First surface 232a, second surface 240a, section 241a, first surface 242a, second surface 250a, connection portion 260a, connection portion 200b,. Child 210b... Terminal body 211b .. First surface 212b .. Second surface 220b... Connection portion 200c... Terminal 210c... Terminal body 211c .. First surface 212c. ... Connecting part 300 ... Sealing part 310 ... Center part 320 ... Branch part Y ... First direction X ... Second direction Z ······ Third direction 10 ················································································・ Second edge 13a3 ・ ・ Inclined surface 13b ・ ・ ・ ・ Protrusion 13b1 ・ ・ First edge 13b2 ・ ・ Second edge 13b3 ・ ・ Inclined surface 13c ・ ・ ・ ・ Protrusion 13c1 ・ ・ First edge 13c2 ・ ・ Second edge 13c3 ・ ・ Inclined surface 14 ・ ・ ・ Sprue 20 ・ ・ ・... Second mold 21 ... Recess 22 ... Protrusion 22a ... Center 22b ... Branch 30 ... 3rd mold 31 ... Convex part 32 ... Concave part 33a ... Projection 33b ... Protrusion 33c ... Protrusion 40 ... Second mold 41 ... Concave part 42 ...・ Sprue R1 ・ ・ ・ ・ ・ ・ First insulating resin R2 ・ ・ ・ ・ Second insulating resin

Since the second body is provided so as to cover the entire area of the second surface of the first body, the thickness of the resin molded product is increased.

At least one length dimension of the branch portion may be smaller than a length dimension of the terminal . It is possible smaller Kusuru than the width dimension of at least one width dimension the terminals of the branches.

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 recess 140 of the body 100 is closed with the fourth mold 40. Thereby, a space is defined by the fourth mold 40 and the concave portion 140 of the body 100. Thereafter, the second insulating resin R2 is injected from the sprue 42 into the space to fill the space (concave portion 140). Thereafter, the second insulating resin R2 is cured. In this way, the second insulating resin R2 is molded as the seal portion 300. Thereby, the seal part 300 is fixed to the body 100 and the terminals 200a, 200b, and 200c. Thereafter, the third and fourth molds 30 and 40 are released, and the body 100, the terminals 200a, 200b, and 200c, and the seal portion 300 are taken out. A resin molded product is manufactured as described above.

In the above embodiment, the cavity C1 of the first and second molds 10 and 20 is defined by the convex portion 11, the concave portion 12, the projections 13a, 13b, and 13c, the concave portion 21 and the projection 22. However, the design of the cavities of the first and second molds can be arbitrarily changed according to the shapes of the body and the terminals. For example, the first mold has a convex part, and the second mold is provided with a concave part into which the convex part is inserted, and a concave part of the second surface of the body provided in the concave part. It is possible to have a structure having a protrusion. In this case, the cavities of the first and second molds are defined by the protrusions of the first mold and the recesses and protrusions of the second mold. A first mold having a recess; a second mold having a protrusion inserted into the recess; and a protrusion provided on the protrusion and forming a recess on the second surface of the body. It is possible to have a configuration having In this case, the cavities of the first and second molds are defined by the concave portions of the first mold and the convex portions and protrusions of the second mold. The first mold has a first recess, and the second mold has a second recess and a projection provided in the second recess and forming a recess on the second surface of the body. It can be configured. In this case, the cavities of the first and second molds are defined by the first recesses of the first mold and the second recesses and protrusions of the second mold. Further , when the concave portion is provided on the first surface of the body, the design may be changed so that the terminal is sandwiched between the protrusion provided on the first mold and the protrusion of the second mold when the cavity is accommodated. Is possible. At this time, the projection of the first mold forms a recess in the first surface of the body. The protrusion of the first mold can be provided on the convex part, the concave part or the first concave part of the first mold.

In the above embodiment, the cavity C2 of the third and fourth molds 30, 40 is defined by the convex portion 31, the concave portion 32, the projections 33a, 33b, 33c, and the concave portion 41. However, the cavities of the third and fourth molds can be arbitrarily changed according to the outer shape of the resin molded product. For example, the third mold may have a convex portion, and the fourth mold may have a concave portion into which the convex portion is inserted. In this case, the cavities of the third and fourth molds are defined by the convex portions of the third mold and the concave portions of the fourth mold. The third mold may have a concave portion, and the fourth mold may have a convex portion that is inserted into the concave portion. In this case, the cavities of the third and fourth molds are defined by the concave portions of the third mold and the convex portions of the fourth mold. The third mold may have a third recess, and the fourth mold may have a fourth recess. In this case, the cavities of the third and fourth molds are defined by the third recesses of the third mold and the fourth recesses of the fourth mold. Furthermore, as described above, when the concave portion is provided on the first surface of the body, the design is changed so that the terminal is sandwiched between the protrusion provided on the third die and the fourth die when the cavity is accommodated. Is possible. At this time, the protrusion of the third mold is fitted into the recess of the first surface of the body. The protrusion of the third mold can be provided on the convex part, the concave part or the third concave part of the third mold.

Claims (12)

A body made of insulating resin having a first surface, a second surface opposite to the first surface, and a recess provided in the second surface;
A terminal embedded in the body so as to be partially exposed from the recess;
A resin molded product comprising: a sealing portion made of an insulating resin that is filled in the concave portion of the body and is fixed to the body and the terminal. In the resin molded product according to claim 1,
The concave portion is elongated,
A resin molded product in which a length dimension of at least a part of the recess is smaller than a length dimension of the terminal and a width dimension of the part of the recess is smaller than a width dimension of the terminal. In the resin molded product according to claim 1,
A plurality of the terminals;
A resin molded product in which the plurality of terminals are embedded in the body so as to be partially exposed from the recess. In the resin molded product according to claim 1,
The recess includes a central portion;
A resin molded product having a plurality of branch portions extending radially from the central portion. In the resin molded product according to claim 4,
A plurality of the terminals;
A resin molded product in which at least one length dimension of the branch portion is smaller than a length dimension of the terminal and at least one width dimension of the branch portion is smaller than a width dimension of the terminal. In the resin molded product according to any one of claims 4 to 5,
A resin molded product in which the plurality of terminals are embedded in the body so as to be partially exposed from at least one of the branch portions. The terminals are accommodated in the cavities of the first and second molds, and the terminals are partially sandwiched between the first mold and the protrusions of the second mold,
By injecting and curing a first insulating resin into the cavities of the first and second molds, the terminal is insert-molded into the first insulating resin, and the terminal is inserted into the first insulating resin. Forming a recess having a shape corresponding to the protrusion that is partially exposed;
Thereafter, the first and second molds are released to take out the first insulating resin and the terminal,
Thereafter, the first insulating resin and the terminal are accommodated in the cavities of the third and fourth molds, the concave portion of the first insulating resin is closed with the fourth mold, and the fourth mold and the first mold are closed. Injecting the second insulating resin into the space defined by the concave portion of the one insulating resin, curing the resin,
Thereafter, the third and fourth molds are released, and the first and second insulating resins and the terminals are taken out. In the manufacturing method of the resin molded product of Claim 7,
The protrusion is elongated,
A method for producing a resin molded product, wherein a length dimension of at least a part of the protrusion is smaller than a length dimension of the terminal and a width dimension of the part of the protrusion is smaller than a width dimension of the terminal. In the manufacturing method of the resin molded product of Claim 7,
Resin molding in which when a plurality of the terminals are accommodated in the cavities of the first and second molds, the terminals are partially sandwiched between the projections of the first mold and the second mold. Product manufacturing method. In the manufacturing method of the resin molded product of Claim 7,
The protrusion includes a central portion;
A method for producing a resin molded product having a plurality of branch portions extending radially from the central portion. In the manufacturing method of the resin molded product of Claim 10,
A method for producing a resin molded product, wherein at least one length dimension of the branch part is smaller than a length dimension of the terminal and at least one width dimension of the branch part is smaller than a width dimension of the terminal. In the manufacturing method of the resin molded product in any one of Claims 10-11,
When the plurality of terminals are accommodated in the cavities of the first and second molds, the terminals are disposed between the first mold and at least one branch of the protrusion of the second mold. A method for producing a resin molded product that is partially sandwiched.

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