JP4662575B2 - Resin molded product having insert member fixed in hollow portion and molding method thereof - Google Patents

Description

  The present invention forms a hollow portion (including a hollow portion having an opening) between a plurality of case members, a resin molded product in which the insert member is fixed to the hollow portion, and a fixing method for fixing the insert member to the hollow portion About.

Conventionally, when an insert member such as an electric / electronic circuit board is mounted in a case, a method has been used in which a screw hole having a clearance for absorbing an installation error or thermal displacement is provided in the insert member and fastened with a screw or the like. It has been.
This fastening method has a problem that the fastening portion may be loosened due to creep.
Further, the insert member may be rattled due to the clearance of the screw holes.
In addition, when tightening with screws, the tightening state cannot be visually confirmed as it is, so it is necessary to carry out torque management of screw tightening for quality assurance, and production efficiency is poor.
On the other hand, techniques for continuously forming a hollow body with a set of injection molds are disclosed in JP-A-2-38377, JP-A-5-84711 and the like (die slide injection method).
This die slide injection method is excellent in that a hollow resin molded product can be continuously molded with a pair of opposing molds, but there is no technical idea for fixing an electronic substrate or the like in the hollow portion.
Therefore, as a result of examining in detail whether or not an insert member such as an electronic board can be fixed simultaneously when the divided body divided into two parts disclosed in the publication is integrated by secondary injection molding, the present invention has been achieved. It was.

JP-A-2-38377 JP-A-5-84711

  The present invention can securely fix an insert member such as an electronic substrate in a resin case, and in particular, this insert member can be fixed to the inside of a hollow body (including a hollow body partially having an opening) so as not to loosen. In addition, in the case of a hollow part having no opening part or a hollow part to which an insert member having an external connection part is attached, a method for producing a resin molded product capable of fixing the insert member and simultaneously sealing the hollow part And it aims at provision of the resin molded product which has the hollow part to which the insert member by it was fixed.

The technical gist of the present invention includes a first case member, a second case member, and an electronic board, the electronic board having a connector for external connection, and a fixing hole for the first or / and second case member. has, the first case member and / or the second case member, wherein a position corresponding to the fixing hole has a larger fixing recess of diameter than the fixing hole, the first casing member and the The two-case member has an externally extending portion of the connector , a butting portion for butting the first case member and the second case member while accommodating the electronic board inside , and the connector The connector part is extended to the outside by having a welding groove over the entire circumference of the part in contact with the outer peripheral part of the metal and the entire butted part, and filling the resin with injection molding over the whole circumference of the fixing hole, the fixing concave part and the welding groove. While the electronic substrate is the first and second Characterized in that are sealed in over scan.

Here, the expression of the first case member and the second case member means that, when molding a resin molded product having a hollow portion, at least the hollow portion is divided into a first case member and a second case member, and then butt-matched. The purpose is to form the hollow portion.
Therefore, when a hollow part is partially formed in a resin molded product, the hollow part part should just be divided | segmented.
In the present invention, the hollow portion includes a hollow portion and a sealed hollow portion that are partially opened for the purpose of forming a hollow space by abutting at least two divided bodies.
In addition, the first or / and second case member is provided with a fixing recess at a position corresponding to the fixing hole of the insert member because the fixing recess of the case member and the fixing hole of the insert member are connected. The purpose is to inject molten resin into this space.
Therefore, the insert member may be fixed to either the first case or the second case member, and a fixing recess is formed in both case members so as to sandwich the fixing hole of the insert member from both sides. Also good.
In addition, if a fixing recess larger than the diameter of the fixing hole of the insert member is formed in both case members so as to sandwich the fixing hole of the insert member from both sides, the fixing recess of both case members and the insert member When the fixing holes are connected by injection resin (secondary molding), the fixing resin on both cases can be connected and fixed so as to sandwich the insert member.
When fixed in this way, the resin for fixing the insert member is molded so as to be undercut with respect to the fixing hole of the insert member, so there is no gap between the case member and the fixing portion of the insert member. It becomes difficult to loosen, and the insert member can be fixed to the case side more reliably.

As a fixing method by forming the undercut portion, a method of providing a protrusion on the inner periphery of the fixing hole of the insert member, for example, a stepped fixing hole is conceivable.
In this case, when the fixing recesses of both case members and the fixing holes of the insert members are connected by injection resin (secondary molding), the fixing resin is locked to the protrusions inside the stepped fixing holes. Connect as follows.
The shape of the protrusion provided in the fixing hole is not particularly limited as long as the fixing resin can be locked, and may be a partially raised protrusion in addition to the ring-shaped step.

  The hollow portion for fixing the insert member may partially have an opening, but at the same time as fixing the insert member in the hollow portion formed by the first case member and the second case member, If a welding groove is formed in the butt portion of the first case member and the second case member so as to be sealed, it is possible not only to fix the insert member in the hollow portion but also to seal and seal at the same time.

  Further, the insert member has an external connection portion with the outside, and a welding groove is formed between the outer peripheral portion of the external connection portion and the first case member and the second case member. 2 When the resin molded product is filled with resin by injection molding at the same time as the welding groove at the butt portion with the case member, not only the insert member is fixed to the hollow portion but also the connection portion can be connected to the outside of the case so that the hollow portion Seal sealed.

For example, when the insert member has a connector as an external connection portion on the board, an opening is provided between the edges of the first case member and the second case member, and a fitting portion for fitting the outer peripheral portion of the connector is provided. A welding groove surrounding the outer periphery of the connector is formed at the boundary between the fitting portion and the outer periphery of the connector.
The welding groove that surrounds the outer periphery of the external connection portion may be formed on either the fitting portion side or the external connection portion side. You may form partially in the connection part side, respectively.
The welding groove surrounding the outer peripheral portion of the external connection portion is continued with the welding groove formed between the butted portions.
When the resin is injected into the welding groove, the outer peripheral portion of the external connection portion and the joints of the first case member and the second case member are integrated and sealed, and the hollow portion is sealed.

If at least one of the first case member and the second case member is made of transparent resin and the resin filled in the fixing hole of the insert member is colored differently from the case member, the insert from the outside of the case The fixed state of the member can be confirmed.
Alternatively, if the fixing recess of the first and / or second case member is a through-hole, when the fixing recess is filled with resin, the filling resin can be visually observed through the case outer opening of the fixing recess. The fixed state of the insert member can be confirmed from the outside.

The following method is suitable as a method of manufacturing a resin molded product in which an insert member is fixed or sealed in such a hollow portion.
A slide part is provided on the fixed side or the movable side of an injection molding die composed of a fixed side and a movable side, and one of the first and second case members is formed on the movable side, and the other is formed on the slide part. Then, the step of primary injection molding simultaneously by injecting molten resin and the case member held on the slide portion side are moved to face the case member held on the movable side or the fixed side. And a step of filling the melted resin into the welding groove and the fixing hole of the insert member and the fixing recess of the first or second case member by secondary injection molding. It is characterized by that.
Here, the cavity portion means the female mold side that holds the product when the mold is opened. However, when the female mold of the first case member is formed on the movable side, the second case member becomes a male mold. Since the male mold of the first case member and the female mold of the second case member are formed on the slide portion so as to face each other, the side that holds the product portion when the mold is opened is defined as the cavity portion for convenience.

In the present invention, it is preferable to mold the first case member and the second case member simultaneously by primary injection molding.
Then, the insert member is mounted in the hollow portion formed between the first case member and the second case member.
At the time of the next secondary injection molding, the molten resin is injected into the welding groove of the butt portion formed on the first case member and the second case member, and the first case member and the second case member are integrated at the butt portion. In addition, a hollow portion is formed, and in addition, a molten resin is injected into a space formed by the fixing recess of the case member and the fixing hole of the insert member, and the insert member is fixed to the case side.
When the insert member has an external connection part for relaying the inside and outside of the hollow part, it melts in the welding groove surrounding the outer connection part in addition to the welding groove in the butt part during the secondary injection molding. Resin is injected to integrate the outer peripheral portion of the external connection portion with the fitting portion formed by the first and second case members.

In the present invention, in order to form the insert fixing portion by filling the resin into the fixing hole portion provided in advance in the insert member incorporated in the case and the fixing concave portion on the case member side during the secondary injection molding, Integrate with the case.
The molding of the insert fixing portion may be performed at the same time as filling the welding groove formed in the butt portion of the first case member and the second case member during the secondary injection molding and connecting the butt portion. Therefore, it is possible to efficiently manufacture a hollow body having an insert member therein.
As a result, there is no gap between the fixing hole portion of the insert member and the case, and there is no fear of positional deviation or rattling.
The hollow portion formed by combining the first case member and the second case member is formed by forming a butt portion where a welding groove is formed in at least one of the case members so as to surround the hollow portion in an annular shape, and this welding groove It is possible to seal the resin by filling it with molten resin and welding the butt portion, and it is possible to efficiently manufacture a resin molded product in which the insert member is sealed in the hollow portion.
In the case of providing an external connection portion such as a connector for connecting to the outside of the resin molded product on the insert member, an external connection portion that opens to fit the external connection portion between the first case member and the second case member. A fitting part is formed so that the outer peripheral part of an external connection part may be surrounded by the edge part of a 1st case member and a 2nd case member.
A welding groove is formed between the fitting portion and the external connection portion so as to continuously surround the outer peripheral portion of the external connection portion in the circumferential direction.
The welding groove surrounding the outer peripheral portion of the external connection portion is connected and continued at the boundary between the welding groove, the fitting portion, and the butting portion formed in the butting portion of the first case member and the second case member.
Thus, by filling the welding groove with the resin, a resin molded product in which the boundary portion between the first case member, the second case member, and the outer peripheral portion of the external connection portion is sealed with the welding portion is obtained.
If at least a part of the case is made of transparent resin, or is visible through the fixing recessed through hole of the case, the fixing state of the insert member can be easily confirmed visually or by image processing, and torque at the time of screw or bolt fastening Management becomes unnecessary.
Further, since no fastening member such as a screw is used, there is no fear of loosening due to creep.
In the resin molded product in which the insert member is fixed to the hollow portion in the present invention, the case and the insert member are securely fixed, and it is effective to be applied to transportation equipment and automobile parts with large vibration, and the hollow portion is sealed. Therefore, it has an excellent effect for fixing an electronic board or the like that is not suitable for dust and moisture.

The molding method of the resin molded product in which the insert member is fixed to the hollow portion according to the present invention will be described in detail later, and a structural example of a hollow body to which the present invention is applied will be described based on a schematic diagram.
FIG. 1 (a) shows a schematic view of a cross section of an embodiment of a hollow resin molded product in which an insert member according to the present invention is fixed, and FIG. 1 (b) shows a perspective view.
Moreover, FIG. 2 (a) shows the schematic diagram of the cross section before integrating a 1st case member and a 2nd case member, and FIG. 2 (b) shows an exploded perspective view.
As shown in FIG. 2, the first case member 11 and the second case member 12, which are divided bodies, are formed separately in the primary injection molding, although simultaneously.
At this time, the first case member 11 is formed with a concave first case member side fixing concave portion 11a, and the second case member 12 is also formed with a concave second case member side fixing concave portion 12a.
On the other hand, a fixing hole 33 which is a through hole is provided in advance in the insert member 30.
The first case member-side fixing recess 11a and the second case member-side fixing recess 12a are formed at positions facing each other across the fixing hole 33 of the insert member 30 disposed between the first and second case members 13.
The upper and lower fixing recesses 11a and 12a are fixed to the surface of the insert member 30 around the fixing hole 33 when the insert member 30 is mounted as shown in FIG. The holes 33 are in close contact with each other so as to wrap the holes.
Further, the first and second case members 11 and 12 are projected to the outer edge portions of the respective butting portions 14 and 15 of the first case member 11 and the second case member 12 for secondary injection molding in FIG. As shown in the combined state, the formation walls 11d and 12d of the welding groove 16 are provided in the circumferential direction of the butting portions 14 and 15.
As shown in FIG. 3, the first case member 11 and the second case member 12 are temporarily attached to a predetermined position between the first case member 11 and the second case member 12 as shown in FIG. Match each other's butts.
Then, by injecting a molten resin 51 from a sprue runner 8b for secondary injection molding provided so as to communicate with the second case member fixing recess 12a, as shown in FIG. The fixing hole 33 and the first case member side fixing concave portion 11a are filled with molten resin from the side fixing concave portion 12a to form an insert fixing portion 20, and the insert member 30 is inserted into the hollow portion 19 of the case by resin fusion. To fix.
In the figure, the sprue runner 7b for primary injection molding is indicated by an imaginary line for reference.
Further, the weld groove 17 is molded as shown in FIGS. 3 (b) and 1 (b) by filling the welding groove 16 with resin in the circumferential direction by another sprue runner 8a for secondary injection molding. The first case member 11 and the second case member 12 are joined by fusion bonding.

Next, the molding method will be described.
FIG. 4 is a schematic view of a longitudinal section of a die slide injection mold for molding a resin molded product having a hollow portion according to the present invention.
The mold is configured by disposing a movable side 2 and a fixed side 3.
A first case member forming female die (cavity portion) 2b and a second case member forming male die (core portion) 2c are provided as nested molds in the movable side mold plate portion 2a of the movable side 2.
The fixed side 3 is provided by a cylinder 5 so that a slide part 3b can slide in the vertical direction.
The fixed side mold plate part 3a to which the slide part 3b is attached is movable between the fixed side attachment plate 3e in the left-right direction of the drawing.
The fixed side 3 is provided with a slide portion 3b that is driven by cylinder driving on the fixed side mold plate portion 3a. The first case member forming male die (core portion) 3c and the second case member forming female die are respectively nested. (Cavity part) 3d is provided.
The slide portion driven by the cylinder drive may be provided on either the fixed side or the movable side.
The first case member molding male mold 3c is provided with a first case member sprue runner 7a for primary injection molding, and the second case member molding female mold 3d is a second case member sprue for primary injection molding.・ A runner 7b is provided.
In the figure, the sprue runners 8a and 8b for secondary injection molding are indicated by imaginary lines for reference.
The fixed side mounting plate 3e includes a stripper plate portion 3g on the fixed side mounting plate plate portion 3f.

FIG. 5 shows the closed state.
In this state, molten resin is injected from the molding machine nozzle 1a into the cavity portions 11e and 12e through the sprue runners 7a and 7b.
FIG. 6 shows a state in which the first case member 11 and the second case member 12 are simultaneously molded and opened by primary injection molding.
When the mold is opened, the insert member 30 is temporarily attached to the first case member 11 with a robot arm or the like.
The temporary attachment of the insert member 30 may be performed by positioning the insert member 30 on the case with a light locking force, and the method is not particularly limited. For example, there is a method of providing a positioning guide or protrusion on the case side. Conceivable.
Then, as shown in FIG. 7, when the insert member 30 is temporarily attached to the first case member 11, the second case member 12 is opposed to the first case member 11 by sliding the slide portion 3 b by driving the cylinder 5. Move to position.
The temporary attachment of the insert member 30 may be on either the first case member 11 or the second case member 12 and is not limited.
And as shown in FIG. 8, the 1st case member 11 and the 2nd case member 12 are faced | matched by mold closing.
FIG. 3 (a) is an enlarged view of the first and second case members 11 and 12 in FIG. 8, and the first and second case members are rotated in the vertical direction.
At this time, the opening edge 11b of the first case member-side fixing recess 11a is in close contact with the insert member first case member-side surface 31 around the fixing hole 33, and the opening edge 12b of the second case member-side fixing recess 12a. Closely contacts the insert member second case member side surface 32 around the fixing hole 33.
Since the second case member-side fixing recess 12a, the fixing hole 33, and the first case member-side fixing recess 11a communicate with each other, secondary injection molding is performed with a molten resin 51 as shown in FIG. Filled to form a fixing portion 20 including a first case member side fixing portion 21, an insert fixing portion connecting portion 22, and a second case member side fixing portion 23.
The fixing portion 20 is connected to the first case member 11 and the second case member 12 by welding, and since the diameters of the fixing portions 21 and 23 are larger than the diameter of the fixing hole 33, the fixing hole 33 portion of the insert member 30. Pinch.
On the other hand, the weld groove 16 between the weld groove forming walls 11d and 12d shown in FIG. 3 (a) has a weld portion 17 shown in FIG. 3 (b) and FIG. Mold.
As a result, the first case member 11 and the second case member 12 are fused.
FIG. 9 shows a state where the mold is opened and the resin molded product 10 is taken out by the ejector pins 6.

A method for confirming the fixed state of the insert member of the finished product will be described with reference to FIG.
The resin forming the fixing portion 20 is filled with resin so as to fill the outer opening portion 11c so that it can be visually confirmed from the outer opening portion 11c of the fixing concave portion 11a.
In this way, by forming the fixing portion 20 so that a part thereof is exposed to the outside of the case, the fixing state of the insert member 30 can be easily confirmed visually.
Alternatively, for example, when the first case member 11 or the second case member 12 is made of a transparent resin, and the fixing portion 20 is formed by filling the fixing hole 33 of the insert member 30 with a colored resin different from the case member, Even when viewed from an oblique direction, the fixed state can be visually confirmed.

FIG. 10 shows another embodiment.
The resin molded product is drawn only near the insert fixing part.
FIGS. 10 (a), 10 (b), and 10 (c) show an embodiment in which a welding groove 17a is provided on the inner side of the case to provide a welding portion 17a.
FIG. 10 (a) shows a longitudinal sectional view, FIG. 10 (b) shows a top view, and FIG. 10 (c) shows a closed state for secondary injection molding.
In the secondary injection molding, the molten resin is welded from the sprue runner 8a shown in FIG. 10 (c) through the welded portion gate 18a between the first case member 11g and the second case member 12g, and then into the weld groove shown in FIG. 10 (a). The welded portion 17a is formed in a circumferential shape inside the case by being led to the weld groove 18 formed by the wall 18c and the first and second case members 11g and 12g.
On the other hand, FIG. 10 (d), FIG. 10 (e), and FIG. 10 (f) form the welded part and the fixed part by communicating with the weld groove 18 forming the welded part and the first case member-side fixing concave part 11a. Indicates when to do.
As shown in FIG. 10 (f), the first case member-side fixing recess 11a communicates with a welding groove 18 for forming a welded portion through a communication portion 18b.
As a result, the molten resin flows from the welding groove 18 into the first case member-side fixing recess 11a, the fixing hole 33, and the second case member-side fixing recess 12a. As shown in (e), the fixing portion 20a can be formed.

FIG. 11 shows an embodiment in which a protrusion is provided in the fixing hole of the insert member.
11A shows a schematic diagram of a cross section, and FIG. 11B shows a schematic diagram of a cross section before integrating the first case member 11h, the second case member 12h, and the insert member 30a.
The opening side of the stepped fixing hole 33a of the insert member 30a is recessed portions 33b and 33c having a diameter larger than the diameter of the fixing recessed portions (through holes) 11f and 12f of the case.
In this case, when the case members 11h and 12h and the insert member 30a are connected by the injection resin, the fixing portions 20b and 20c on both cases side are connected so as to wrap around the protruding portion 33d.

The external view of the Example of the resin molding goods provided with the insert member which provided the connector (external connection part) in FIG. 12 is shown.
FIG. 12 (a) shows a perspective view of a resin molded product before filling the weld groove with the molten resin by secondary injection, and FIG. 12 (b) shows the hollow portion filled with the molten resin by the secondary injection. The perspective view of the resin molded product after sealing 19 is shown.
An exploded view of the resin molded product before the secondary injection is shown in FIG. 13, a cross-sectional view taken along line AA is shown in FIG. 14 (a), and a cross-sectional view taken along line BB is shown in FIG.
In the drawing, the main part is simplified for the sake of explanation, and the connector 46 does not show the terminals.
Further, in FIG. 12, the insert member is seen through, and in FIG. 12B, the secondary injected molten resin is seen through.
In FIG. 12, a resin molded product 40 has a connector (external) in a hollow portion 19 formed by a cover member (first case member, hereinafter referred to as a cover member) 41 and a case member (second case member, hereinafter referred to as a case member) 42. The insert member 44 with the connection portion 46 is accommodated, and the connector 46 extends from the hollow portion 19 to the outside of the resin molded product 40.
The connector 46 is provided with a terminal or the like to perform relay connection between the substrate 45 in the hollow portion 19 and the outside of the resin molded product 40.
As shown in FIG. 13, the connector 46 has a circumferential welding groove 46e formed in an outer peripheral portion 46a extending over the upper portion 46b, the lower portion 46c, and the side portions 46d.
This connector 46 is formed in a connector fitting portion 43 formed between a case member notch portion 42e formed by recessing the edge portion 42b of the case member 42 downward and an edge portion 41g of the cover member 41 as shown in FIG. Fit as shown in b).
On the case member 42 side of the connector fitting portion 43, a case member fitting portion welding groove 42d is formed from the case member notch bottom portion 42f to the notch side portion 42g.
In FIG. 14 (b), the welding groove 42d is disposed so as to face the welding groove 46e of the connector at the notch portion bottom portion 42f, and is welded so as to straddle both the connector outer peripheral portion lower portion 46c and the notch portion bottom portion 42f. The groove 41d is filled with molten resin.
The cover member 41 side of the connector fitting portion 43 is provided with a fitting portion welding groove 41d opposed to the connector welding groove 46e when the connector is fitted, and straddles both the connector upper portion 46b and the cover member 41. So that it is filled with molten resin.
As shown in FIG. 12A, the fitting portion welding groove 41d of the cover member 41 and the fitting portion welding groove 42d of the case member 42 are connected to each other in the assembled state of the cover member 41, the insert member 44, and the case member 42. In addition, it is continuous along the outer peripheral portion 46a of the connector 46 while facing the connector welding groove 46e.
Further, in the abutting portion between the cover member 41 and the case member 42, the welding grooves 41c and 42c are melted so as to straddle both the abutting portions 41e and 42h as shown in FIGS. 14 (a) and 14 (b). Filled with resin.
When the secondary injection is performed and the molten resin is filled, the molten resin surrounding the hollow portion 19 is filled in the joints of the cover member 41, the case member 42, and the connector 46, as shown in FIG. A welded portion 50 that connects the seams is formed, and the hollow portion 19 is sealed.

  In the secondary injection, the cover member 41 and the fixing recesses 41a and 42a of the case member 42 and the fixing hole 45a of the substrate 45 shown in FIG. The substrate 45 is fixed to the cover member 41 and the case member 42.

The Example of the resin molded product which fixed the insert member based on this invention in the hollow part is shown. (A) shows the schematic diagram of the cross section before a 1st case member and a 2nd case member are faced | matched, (b) shows an exploded perspective view. The schematic diagram of the cross section of the state which faced the case member for secondary injection molding is shown. A longitudinal sectional view of a die slide injection mold is shown. A closed mold state is shown for primary injection molding. The state which shape | molded the 1st case member and the 2nd case member simultaneously by the primary injection molding is shown. The state which made the 1st case member and the 2nd case member oppose by sliding a slide part is shown. The longitudinal cross-sectional view of the state which carried out the secondary injection molding is shown. The product is opened and the product is taken out. The example of the fixing | fixed part and welding part of another structure is shown. The Example of the resin molded product which provided the projection part in the hole for fixing of an insert member is shown. The Example of the resin molded product in case an insert member has a connector is shown. The exploded view of the resin molded product in case an insert member has a connector is shown. (A) shows a cross-sectional view along the line AA, (B) shows a cross-sectional view along the line BB, and (C) shows a plan view with the cover member removed.

Explanation of symbols

1 Die Slide Injection Mold 1a Molding Machine Nozzle 2 Movable Side 2a Movable Side Mold Plate 2b Movable Side First Case Member Female Mold 2c Movable Side Second Case Member Male Mold 3 Fixed Side 3a Fixed Side Mold Plate 3b Fixed side sliding portion 3c Fixed side first case member molding male die 3d Fixed side second case member molding female die 3e Fixed side mounting plate 3f Fixed side mounting plate plate portion 3g Fixed side stripper plate portion 5 Cylinder 6 Ejector pin 7a, 7b Primary injection molding sprue runner 8a, 8b Secondary injection molding sprue runner 10 Resin molded product 11, 11g, 11h First case member 11a First case member side fixing recess 11b First case member side fixing Opening edge 11c of the recess The outer opening 11d of the first case member side fixing recess 11d The first case member welding groove forming wall 11e The first case Cavity for member 11f First case member side fixing recess (through hole)
12, 12g, 12h Second case member 12a Second case member side fixing recess 12b Second case member side fixing recess opening edge 12c Second case member side fixing recess outer opening 12d Second case member Weld groove forming wall 12e Second case member cavity 12f Second case member side fixing recess (through hole)
13 Between first and second case members 14 First case member butting portion 15 Second case member butting portions 16, 16a, 16b, 16c, 16d Welding grooves 17, 17a Welding portion 18 Welding groove 18a Welding portion gate 18b Communication Part 18c Welding groove wall 19 Hollow parts 20, 20a, 20b, 20c Insert fixing part 21 First case member side fixing part 22 Insert fixing part connecting part 23 Second case member side fixing part 30, 30a Insert member 31 Insert member No. 1 case member side surface 32 insert member second case member side surface 33 fixing hole 33a stepped fixing holes 33b, 33c concave portion 33d formed in the opening of the fixing hole protrusion 40 in the stepped fixing hole 40 connector ( Resin molded product 41 provided with external connection part) Cover member (first case member)
41a Cover member side fixing recess 41b Fixing recess outer opening 41c Cover member butting portion welding groove 41d Cover member fitting portion welding groove 41e Cover member butting portion 41f Cover member edge 42 Case member 42a Case member side fixing recess 42b Case member edge 42c Case member butting part welding groove 42d Case member fitting part welding groove 42e Case member notch part 42f Notch bottom part 42g Notch side part 42h Case member butting part 43 Connector fitting part 44 Connector ( Insert member 45 with external connection part) Board 45a Fixing hole 46 Connector (external connection part)
46a Connector (external connection part) outer peripheral part 46b Connector outer peripheral part upper part 46c Connector outer peripheral part lower part 46d Connector outer peripheral part side part 46e Connector welding groove 50 Welding part 51 Molten resin

Claims (2)

A first case member, a second case member, and an electronic board, the electronic board having a connector for external connection; and a fixing hole for the first or / and second case member;
The first case member or / and the second case member have a fixing recess having a larger diameter than the fixing hole at a position corresponding to the fixing hole ,
Said first case member and the second case member, and the outer extension portion of the connector, while accommodating the electronic substrate inside the butt portion for matching the first case member and the second case member to each other And having a welding groove over the entire circumference of the butt portion and the portion that contacts the outer peripheral portion of the connector,
The electronic substrate is sealed in the first and second cases while the connector portion is extended to the outside by being filled with resin by injection molding over the entire circumference of the fixing hole, the fixing recess, and the welding groove. A resin molded product characterized by Of the first case member and the second case member, at least one is made of a transparent resin, wherein the resin used in the resin filling, characterized in that different colors of the colored resin and the first and second casing Item 1. A resin molded article according to Item 1.

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