JP2001068079A - Resin molded body with metal terminal, apparatus for producing the same, and method for producing resin molded body with metal terminal - Google Patents

Abstract

(57) [Problem] To provide a resin molded body with a metal terminal that firmly fixes a resin molded member and a metal terminal, suppresses detachment of the metal terminal, and can withstand use over time. Further, the present invention provides a manufacturing apparatus and a manufacturing method of a resin molded body with a metal terminal, which can manufacture such a resin molded body with a metal terminal with high accuracy, and simplifies the manufacturing process to improve the production efficiency. SOLUTION: A battery holder (a resin molded body with a metal terminal) 101 is formed by using fixing members 131a and 131b integrally formed on a battery holder main body 121 integrally formed separately from the battery holder main body 121. The terminal portions 128a and 128b are configured to be fixed. In addition, the fixing members 131a and 131b can be molded from the first mold in which the lower side of the battery holder main body 121 is molded without extracting the battery holder main body 121, and the first mold can be consistently formed. A manufacturing apparatus and a manufacturing method that can be used are adopted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molded product with a metal terminal, for example, a resin molded product with a metal terminal which is used as a battery holder or a connector and has an undercut in a metal terminal portion, an apparatus for manufacturing the same, and a resin with a metal terminal. The present invention relates to a method for manufacturing a molded article.

[0002]

2. Description of the Related Art Conventionally, two types of methods for producing a resin molded body with metal terminals have been known, including a press-fitting method and a welding method (heat caulking method). About these manufacturing methods,
This will be described with reference to FIGS. First, the press fit method
As shown in FIG. 10, an integrally molded resin molded member 61 is formed.
A convex portion 63 is formed in the metal terminal mounting portion 62 for mounting the metal terminal 71 on the metal terminal 71, and the metal terminal 71 mounted on the metal terminal mounting portion 62 corresponds to the convex portion 63. A hole 72 is provided in advance at the position, and the metal terminal 7 is
1 is fixed. In this manufacturing method, the protrusion 63
Is fitted in the hole 72, so that the size of the convex portion 63 must be slightly larger than the size of the hole 72. On the other hand, in the case of the welding method, as shown in FIGS. 10 and 11,
The metal terminal 71 is placed on the metal terminal mounting portion 62 so that the convex portion 63 penetrates the hole 72, and the convex portion 63 protruding above the metal terminal 71 is heat-welded and molded. The metal terminal 71 is swaged as the swaged portion 63a having a large diameter. By doing so, the metal terminal 71 is fixed to the resin molded member 61, and the resin molded body with metal terminal 80 is obtained. In this manufacturing method, the projection 63 only needs to be inserted into the hole 72, and strict dimensional accuracy is not required for the projection 63 as in the press-fitting method. The welding method is a simple manufacturing method in which the metal terminal 71 can be attached and fixed to the resin molded member 61 only by heating and welding the convex portion 63 and molding.
It has been widely used so far.

[0003]

However, in the press-fitting method, since strict dimensional accuracy is required for molding the resin molded body 61 as described above, there have been problems in terms of productivity and quality stability. Further, when the protruding portion 63 is worn out due to use over time, there is a problem that the metal terminal 71 easily falls off from the resin molded member 61. Further, in the welding method, since the convex portion 63 once molded is melted again to caulk the metal terminal 71, the material of the caulked portion 63 a is denatured and deteriorated as compared with the resin molded member 61. That is inevitable. For this reason, the strength of the caulked portion 63a is reduced and becomes brittle, and when the caulked portion 63a becomes fatigued due to use over time, the caulked portion 63a easily falls off from the integral convex portion 63, and the metal terminal 71 becomes resinous. Molded member 6
There was a problem that it deviated from 1. In an attempt to solve such problems, attempts were made to mold the resin molded body by so-called insert molding and at the same time to attach the metal terminals integrally. It becomes difficult to pull out. Therefore, it has been extremely difficult to commercialize such a production method industrially.

The present invention has been made in view of the above circumstances, and even if a metal terminal having an undercut is used, the resin molded member and the metal terminal are firmly fixed, and the metal terminal is prevented from coming off, so that the metal terminal can be removed over time. An object of the present invention is to provide a resin molded body with metal terminals that can withstand use. It is another object of the present invention to provide a manufacturing apparatus and a manufacturing method for a resin molded body with metal terminals, which can manufacture such a resin molded body with metal terminals with high precision, simplify the manufacturing process and improve the production efficiency. .

[0005]

According to the first aspect of the present invention,
What is claimed is: 1. A resin molded body with a metal terminal formed by fixing a metal terminal to a first resin molded member by using a second resin molded member, wherein the first resin molded member has a metal terminal on one surface side. Has a through-hole penetrating from the end surface of the metal terminal mounting portion to the other surface of the first resin molded member, and has a through-hole on the other surface side of the through-hole. The metal terminal is a plate-shaped body having a hole which is mounted on the metal terminal mounting portion and has an opening at a position corresponding to the through hole, wherein the metal terminal is an integrally molded body having an engagement concave portion in the opening. A first engaging portion filled in the engaging concave portion;
A shaft part filled in the through-hole and the hole of the metal terminal and a second engagement portion located outside the metal terminal are an integrally molded body. Also,
According to a second aspect of the present invention, there is provided the resin molded body with the metal terminal according to the first aspect, wherein the first resin molded member is a battery holder main body having a storage part for storing a battery, and the metal terminal is provided. Is a terminal portion having a contact portion electrically connected to a battery in the storage portion, and the second
The resin molded member is a fixing portion for fixing the terminal portion to the battery holder main body, the resin molded body with metal terminals, the battery holder main body, the battery holder composed of the terminal portion and the fixing member, It is characterized by having been done.

With this configuration, the metal terminal and the first resin molded member are firmly fixed. That is, the first resin molded member and the metal terminal are held by the first engagement portion and the second engagement portion of the second resin molded member molded separately from the first resin molded member. , Do not move in either direction. Therefore, the first resin molded member and the metal terminal are firmly fixed by the uniform resin molded body that has not deteriorated or deteriorated, and the metal terminal can be prevented from coming off due to use over time. Also, if a resin molded body with metal terminals with such a configuration is applied to a battery holder,
It will be very effective. That is, in the battery holder, the terminal portion is always in contact with the terminal on the battery side in order to electrically conduct with the battery and take out electric power. Therefore, stress concentrates on the terminal mounting portion of the battery holder main body due to a reaction force when the terminal portion presses the battery, an impact applied to the terminal portion when the battery is replaced, and the terminal portion is easily detached. By using a fixing member made of a second resin molded member for such a portion, if the battery holder main body and the terminal portion are firmly fixed, failure of the battery holder due to use over time can be suppressed. In addition, since the contact portion is provided in the storage portion, a resin molded member also exists in the undercut portion of the terminal portion, and therefore, due to solder gas or the like generated when soldering the battery holder to the substrate or the like. An adverse effect on the contact portion can be prevented.

[0007] The invention described in claim 3 is claim 1 or 2.
The manufacturing apparatus for a resin molded body with metal terminals according to the above, wherein a first mold for molding the other surface side of the first resin molded member, and one surface side of the first resin molded member are formed. A second mold for molding; and a third mold for molding the second resin molded member, wherein the first mold includes an auxiliary mold for molding the engagement recess. The auxiliary mold is retractable from the engagement recess, and the second mold includes a rod-shaped protrusion for forming a through-hole so as to open to the metal terminal mounting part; The mold is formed by molding a second resin molded member from outside a metal terminal mounted on a metal terminal mounting portion of the first resin molded member molded by the first mold and the second mold. And a concave portion communicating with the through hole and the hole when the metal terminal is attached to the metal terminal mounting portion. And it features. According to a fourth aspect of the present invention, there is provided a method of manufacturing the resin molded product with metal terminals according to the first or second aspect using the manufacturing apparatus according to the third aspect, wherein the first mold and the first A first step of molding a first resin-molded member using a second mold, and removing the second mold while the first resin-molded member is mounted on the first mold; A second step of retracting the mold from the engagement recess and mounting the metal terminal on the metal terminal mounting portion of the first resin molded member; and mounting the third mold on the metal terminal mounting portion. A third step of filling the space defined by the auxiliary mold, the engagement recess, the through hole, the hole, and the recess with a resin to mold the second resin molding member. I do.

[0008] By configuring the manufacturing apparatus in this manner, in the manufacturing method from the molding of the first resin molded member to the completion of the resin molded body with metal terminals, it is determined whether or not the metal terminal has an undercut. Regardless, it is possible to obtain a resin molded body with metal terminals in which the first resin molded member and the metal terminals are firmly fixed. That is, since the metal terminal is attached after removing the second mold after molding the first resin molded member, the undercut of the metal terminal is performed as in the case where the molding of the resin molded body and the attachment of the metal terminal are performed simultaneously. Will no longer be a problem. Further, the first mold can be used consistently. That is, since the auxiliary mold is retracted after the molding of the first resin molded member,
At the time of molding the second resin molded member, the first concave portion can be formed by filling the concave portion with resin. Thereby, the second resin molded member can be molded without extracting the first resin molded member from the first mold,
At the time of molding, for example, the accuracy can be improved at the time of molding by an automatic hoop molding method, and the manufacturing process can be simplified.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a resin molded product with a metal terminal, an apparatus for producing the same, and a method for producing a resin molded product with a metal terminal according to the present invention will be described below with reference to FIGS. First, a manufacturing apparatus and a manufacturing method of a resin molded body with metal terminals will be described with reference to FIGS. This manufacturing method is a method of manufacturing the resin molded body with metal terminals 1 using a manufacturing apparatus configured to include a first mold 11, a second mold 12, and a third mold 13. , A primary molding step (first step), a secondary molding preparation step (second step), and a secondary molding step (third step).

As shown in FIG. 1, the primary molding step includes a first molding step.
In this step, the first resin molded member 21 is obtained by injecting a molten resin between the mold surfaces 11a and 12a from a nozzle (not shown) before joining the mold 11 and the second mold 12 to each other. . The first mold 11 is formed by the mold surface 11a.
The lower surface (the other surface) 23 side of the resin molded member 21 is molded. In the first mold 11, when the first resin molding member 21 is molded, a first engaging recess 25 having a diameter larger than that of the through hole 24 is formed on the lower surface 23 side of the through hole 24.
Is formed, a substantially cylindrical auxiliary mold 14 is provided. The auxiliary mold 14 can be moved in and out of the first mold 11, that is, can be retracted from the engagement recess 25. When the second resin molding member 31 described later is molded, the auxiliary mold 14 is retracted. The upper end surface 14a of the mold 14 and the first
The mold surface 11a of the mold 11 is flush with the mold surface 11a. The second mold 12 is for molding the upper surface (one surface) 22a side of the first resin molded member 21 with the mold surface 12a. When the first resin molding member 21 is molded, the second metal mold 12 is
Through hole 24 penetrating from upper surface 22a to lower surface 23 of
Is formed so that a substantially cylindrical rod-shaped projection 12 is formed.
b is provided. The protrusion 12b is provided in the auxiliary mold 1
4 is smaller than the diameter of the first end 12c.
Upper end surface 14 of auxiliary mold 14 that has advanced from mold 11
a, and the through-hole 24 communicating with the first engagement recess 25
Can be formed.

Next, as a secondary molding preparation step, as shown in FIG. 2, the second mold 12 is removed while the first resin molding member 21 is mounted on the first mold 11, and the second mold 12 is removed. The metal terminal 28 is placed on the upper surface 22 a of the metal terminal mounting portion 22 of the first resin molded member 21. The metal terminal 28 is a plate-shaped pressed body. At a position corresponding to the through hole 24 of the metal terminal 28, a hole 29 is formed in advance. Further, the auxiliary mold 14 is retracted from the engagement recess 25 so that the upper end surface 14a is flush with the mold surface 11a. The first engaging portion 32 is formed so as to be filled in the inside 25.

Next, as a secondary molding step, as shown in FIG. 3, the third die 13 is mounted on the metal terminal mounting portion 22. The third mold 13 is provided with a concave portion 13a so that a second engagement portion 34 is formed outside the metal terminal 28 when a second resin molding member 31 described later is molded. . In this state, the auxiliary mold 14, the engaging recess 25, the through hole 24, the hole 29, and the recess 13 a
Inject and fill the resin into the space formed by
Is molded.

When the secondary molding process is completed, the third mold 1
3. Remove the first mold 11 as well, as shown in FIG.
The resin molded body 1 with metal terminals is obtained.

The resin molded body 1 with metal terminals is formed by integrally molding the first resin molded member 21 with the second resin molded member 31 integrally molded separately from the first resin molded member 21.
And the metal terminal 28 is fixed. That is, the first engaging portion 32 connected by the shaft portion 33
And the second engagement portion 34, the first resin molded member 21
And the metal terminal 28 are held therebetween so that the metal terminal 28 does not move in any direction. Therefore, the first resin molded member 21 and the metal terminal 28 are firmly fixed by a uniform resin molded body that has not deteriorated or deteriorated. Thereby, the metal terminal mounting portion 22 can be made smaller, the resin molded body with metal terminal 1 can be reduced in size and height, and detachment of the metal terminal 28 due to use over time can be suppressed. The durability and reliability of the body 1 can be improved.

Further, since the manufacturing apparatus is configured as described above, in the manufacturing method from the molding of the first resin molded member 21 to the completion of the resin molded body 1 with metal terminals, the metal terminals 28 are under Irrespective of whether or not there is a cut, it is possible to obtain the resin molded body with metal terminal 1 in which the first resin molded member 21 and the metal terminal 28 are firmly fixed. That is, the metal terminal 28 is attached using the third mold 13 after the second mold 12 is removed after the first resin molded member 21 is molded, so that the undercut of the metal terminal 28 becomes a problem. Is gone. Further, an auxiliary mold 14 is provided in the first mold 11 so that the auxiliary mold 14 is retracted after the first resin molding member 21 is molded. Therefore, at the time of molding the second resin molding member 31, the first engagement portion 32 can be molded by filling the engagement recess 25 with resin. Thereby, the second resin molded member 31 can be molded without extracting the first resin molded member 21 from the first mold 11, so that the first mold 11 can be used consistently. it can. Therefore, the accuracy of molding, for example, at the time of molding by an automatic hoop molding method can be improved, and the manufacturing process can be simplified, so that the manufacturing efficiency can be improved.

Next, an example in which the above-mentioned resin molded body with metal terminals 1 and its manufacturing apparatus, and the method of manufacturing the resin molded body with metal terminals 1 are applied to a battery holder 101 will be described with reference to FIGS. I do. Since the mold used here has the same configuration as the above-described mold, the first mold 11, the second mold 12, the third mold 13, and the auxiliary mold 14 are illustrated in FIG. Description is omitted.

First, as a primary molding step, a first mold 1
The battery holder main body (first resin molded member) 121 is molded using the first and second molds 12. As shown in FIG. 5, the battery holder main body 121 has a storage portion 121a for storing a button-type battery (not shown) in a central portion thereof, and a claw portion 121b for preventing the battery from falling off when storing the battery. 121c is formed. Further, the battery holder main body 121 is provided with terminal mounting portions 122a and 122b to which terminal portions (metal terminals) 128a and 128b are mounted. These terminal mounting portions (metal terminal mounting portions) 122a, 1
22b, a through hole 124a penetrating from the upper surface 123a, 123b to the lower surface of the battery holder body 121,
124b are formed, and the through holes 124a,
The engagement recesses 125a, 125a,
25b (not shown in FIG. 5) is formed.

Terminal portions (metal terminals) 128a, 128b
Are used to electrically connect to the battery in the storage section 121a, respectively, and the terminal mounting sections 122a, 122b
It is a plate-shaped pressed body attached to each of the. A hole 129a is formed in the terminal portion 128a at a position corresponding to the through hole 124a when the terminal portion 128a is placed on the terminal mounting portion 122a, and when the terminal portion 129b is placed on the terminal mounting portion 122b. A hole 129b is formed at a position corresponding to the through hole 124b.

Contact portions 130a, 130a, and 13 for contacting terminals on the lower side of the battery are provided on the terminal portion 128a.
0a is provided, and a contact portion 130b for contacting a terminal on the battery side portion is provided on the terminal portion 128b.
130b is provided. These terminal portions 128a, 1
28b is manufactured by press working so that burrs (not shown) are formed from the contact portions 130a and 130b toward the terminals of the battery. This punched burr portion has a sharp shape, and when it comes into contact with the battery terminal, it functions to remove an oxide film or the like formed on the surface of the battery terminal, and the terminal portion 128a, This prevents the deterioration of the conductivity to 128b. Also, the battery holder body 1
Even when an unexpected impact is applied to the battery 21, poor contact with the battery can be prevented.

Next, as a secondary molding preparation step, the second mold 12 is removed while the battery holder main body 121 is placed on the first mold 11, and the terminal 1 is removed as shown in FIG.
28a is mounted on the terminal mounting part 122a, and the terminal part 128b is mounted on the terminal mounting part 122b. In addition, the auxiliary dies 14, 14 are retracted from the engagement recesses 125a, 125b (not shown in FIG. 6).

Next, as a secondary molding step, the terminal mounting portion 1
The third mold 13 is mounted on the first and second molds 22a and 122b.
And the engagement recess 125b and the through hole 1
The resin is injected and filled into each of the spaces formed by the holes 24b, the holes 129b, and the recesses 13b.
a, 131b (second resin molded member) are molded.

When the secondary molding process is completed, the third mold 1
3. Remove both the first mold 11 and as shown in FIG.
The battery holder 101 is obtained.

As shown in FIGS. 7 and 8, the battery holder 101 uses fixing members 131a and 131b integrally formed separately from the battery holder body 121 on the integrally formed battery holder body 121. The terminal portions 128a and 128b are fixed. That is, the battery holder main body 121 and the terminal portions 128a and 128b are held by the first engagement portions 132a and 132b and the second engagement portions 134a and 134b connected by the shaft portions 133a and 133b, respectively. The terminal portions 128a and 128b are firmly fixed to the battery holder main body 121 by a uniform resin molded body that is not deteriorated or deteriorated. Accordingly, the terminal mounting portions 122a and 122b can be made smaller, and the battery holder 101 can be downsized.
The terminal portion 128 can be reduced in height and used over time.
a, 128b can be suppressed, and the battery holder 10
1 can improve durability and reliability.

Since the battery 102 is housed in the battery holder 101 as shown in FIG. 9, the contact portions 130a and 130b are pressed against the battery 102 by a reaction force.
8a, 128b, the terminal mounting portion 1
The stress concentrates on 24a, 124b and the terminal portions 128a,
128b is a part which is easy to come off. Since the fixing members 131a and 131b are used in these portions, the battery holder main body 121 and the terminal portions 128a and 128b
Is fixed firmly, and failure of the battery holder 101 due to use over time can be suppressed. Further, the contact portions 130a,
Since the battery 130b is provided in the housing 120a, the battery holder main body 121 also exists in the undercut portions of the terminals 128a and 128b. Therefore, the contact portions 130a and 130b due to solder gas or the like generated when the battery holder 101 is soldered to a substrate or the like.
Adverse effect on the battery 102 and poor contact with the battery 102 can be suppressed. Thus, the battery holder 1
The reliability of an electronic device or the like in which the 01 is mounted can be improved, and the life of the device can be extended.

[0025]

As described above, the resin molded product with the metal terminal, the manufacturing apparatus thereof, and the resin molded product with the metal terminal according to the present invention are configured as described above, so that the metal terminal having the undercut is provided. The resin molded member and the metal terminal are firmly fixed by using, the size and height are reduced, the detachment of the metal terminal is suppressed, and the reliability and durability that can withstand use over time are improved. A resin molded body with a metal terminal can be provided. In addition, it is possible to provide a manufacturing apparatus and a manufacturing method of a resin molded body with a metal terminal, which can manufacture such a resin molded body with a metal terminal with high accuracy, simplify a manufacturing process and improve manufacturing efficiency.

[Brief description of the drawings]

FIG. 1 is a diagram showing a manufacturing apparatus and a manufacturing method of a resin molded body with metal terminals according to one embodiment of the present invention, and is a schematic sectional view showing a primary molding step.

FIG. 2 is a schematic cross-sectional view illustrating a manufacturing apparatus and a manufacturing method of a resin molded body with metal terminals according to an embodiment of the present invention, and illustrating a secondary molding preparation step.

FIG. 3 is a view showing a manufacturing apparatus and a manufacturing method of a resin molded body with metal terminals according to one embodiment of the present invention, and is a schematic sectional view showing a secondary molding step.

FIG. 4 is a schematic sectional view showing a resin molded body with metal terminals according to one embodiment of the present invention.

FIG. 5 is a view showing an example in which a resin molded body with a metal terminal, an apparatus for manufacturing the same, and a method for manufacturing the resin molded body with a metal terminal according to one embodiment of the present invention are applied to a battery holder; FIG. 4 is a perspective view showing a part and a terminal part.

FIG. 6 is a perspective view showing a state where the terminal unit shown in FIG. 5 is placed on a battery holder main body.

FIG. 7 is a diagram showing an example in which the resin molded body with metal terminals according to one embodiment of the present invention is applied to a battery holder, and is a perspective view showing the battery holder.

FIG. 8 is a sectional view taken along the line II in FIG. 7;

FIG. 9 is a perspective view showing a state where a battery is stored in the battery holder shown in FIG. 7;

FIG. 10 is a schematic cross-sectional view showing an example of a method for manufacturing a conventional resin molded body with metal terminals.

FIG. 11 is a schematic sectional view showing a conventional resin molded body with metal terminals.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 resin molded body with metal terminal 11 first mold 12 second mold 12 b projection 13 third mold 13 a recess 14 auxiliary mold 21 first resin molded member 22 metal terminal mounting portion 22 a upper surface (one side) 23) Lower surface (the other surface) 24 124a, 124b Through hole 25, 125a, 125b Engagement recess 28 Metal terminal 29, 129a, 129b hole 31 Second resin molding member 32, 132a, 132b First engagement Part 33, 133a, 133b Shaft part 34, 134a, 134b Second engaging part 101 Battery holder 121 Battery holder main part 121a Storage part 122a, 122b Terminal mounting part 128a, 128b Terminal part 130a, 130b Contact part 131a, 131b Fixed Element

Claims (4)

[Claims] 1. A resin molded body with metal terminals, wherein a metal terminal is fixed to a first resin molded member by using a second resin molded member, wherein the first resin molded member has one of A metal terminal mounting portion on which the metal terminal is mounted on the surface side, and a through hole penetrating from the end surface of the metal terminal mounting portion to the other surface of the first resin molded member; A plate-shaped body having an engagement recess in an opening on the other surface side, wherein the metal terminal is mounted on the metal terminal mounting portion, and has a hole that opens at a position corresponding to the through-hole; Wherein the second resin molded member includes a first engagement portion filled in the engagement recess, a shaft portion filled in the through hole and a hole in the metal terminal, A metal terminal, which is an integrally molded body in which a second engagement portion located outside the terminal is integrated. Resin molded body. 2. The first resin molded member is a battery holder body having a storage section for storing a battery, and the metal terminal is a terminal having a contact section electrically connected to the battery in the storage section. Wherein the second resin molded member is a fixing member for fixing the terminal portion to the battery holder main body portion, and the resin molded body with metal terminals is formed by the battery holder main body portion, the terminal portion and the fixing member The resin molded body with metal terminals according to claim 1, wherein the resin holder is a battery holder composed of: 3. The manufacturing apparatus for a resin molded body with metal terminals according to claim 1, wherein the first mold for molding the other surface side of the first resin molded member, and the first mold. A second mold for molding one surface side of the resin molded member, and a third mold for molding the second resin molded member, wherein the first mold is An auxiliary mold for molding a mating recess is provided, the auxiliary mold is retractable from the engaging recess, and the second mold is a rod-shaped mold for forming a through hole so as to open to the metal terminal mounting portion. The third mold is a metal terminal mounted on a metal terminal mounting portion of the first resin molded member molded by the first mold and the second mold. A mold for molding a second resin molded member from the outside, wherein the through-hole and the Apparatus for producing coated metal terminal molded resin object characterized by comprising a recess communicating with. 4. A method for producing a resin molded product with metal terminals according to claim 1 or 2, using the production apparatus according to claim 3. The method according to claim 1, wherein the first mold and the second mold are used. A first step of molding a first resin-molded member; removing the second mold while the first resin-molded member is mounted on the first mold; A second step of retreating from the concave portion and placing the metal terminal on the metal terminal mounting portion of the first resin molded member; mounting the third mold on the metal terminal mounting portion; A third step of filling the resin formed in the space defined by the mold, the engagement recess, the through hole, the hole and the recess to mold the second resin molded member. A method for manufacturing a resin molded body.