Machine storage case, toilet seat device, and method for manufacturing a machine storage case

Abstract

To provide an equipment storage case that is easy to maintain because there is no raised part in a light transmitting part, a toilet seat device, and a method for producing the equipment storage case.SOLUTION: An equipment storage case 1 made of resin for a toilet seat device comprises a light transmitting part 2 and a light impaired transmitting part 3. The light transmitting part 2 is formed in a part of the equipment storage case 1 and has a thickness within a predetermined range. The light impaired transmitting part 3 is formed adjacent to the light transmitting part 2 and has a thickness larger than the predetermined range. An outer surface 21 of the light transmitting part 2 is recessed inward with respect to an outer surface 31 of the light transmitting part 3, and a recess part 111 is formed on an outer surface 11 of the equipment storage case 1.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an equipment storage case, a method for manufacturing the same, and a toilet seat device using the equipment storage case.

Background Art

[0002] Patent Document 1 discloses a sanitary cleaning device including a casing that houses a functional unit therein, a light source provided inside the casing that emits light based on the operating state of the functional unit, and a display unit that is integrally formed with the casing and has a light transmission portion formed by concavely indenting the inner surface of the casing so that light from the light source can pass through.

[0003] The light transmission portion of the display unit has a first thin-wall portion formed with a wall thickness thinner than the wall thickness of the casing, and a second thin-wall portion formed with a wall thickness that gradually becomes thinner as it approaches the first thin-wall portion around the first thin-wall portion.

[0004] The outer surface of the light transmission portion bulges convexly from the second thin-wall portion to the first thin-wall portion more than the outer surface of the other portions of the casing.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the sanitary cleaning device disclosed in Patent Document 1, since the outer surface of the light transmission portion bulges convexly more than the outer surface of the other portions of the casing, it is difficult to wipe and clean this portion with a cloth, and the maintainability is poor.

[0007] The present invention has been invented in view of the above-described conventional problems, and an object thereof is to provide an equipment storage case, a toilet seat device, and a method for manufacturing an equipment storage case that have no raised portions in the light transmission portion and are easy to maintain.

Means for Solving the Problems

[0008] In order to solve the above problems, a resin-made equipment storage case for a toilet seat device according to one aspect of the present invention has a light transmission portion and a light-impermeable portion. The light transmission portion is formed in a part of the equipment storage case and has a thickness within a predetermined range. The light-impermeable portion is formed adjacent to the light transmission portion and has a thickness larger than the predetermined range. The outer surface of the light transmission portion is recessed inward with respect to the outer surface of the light-impermeable portion, and a recess is formed in the outer surface of the equipment storage case.

[0009] In order to solve the above problems, a toilet seat device according to one aspect of the present invention includes the equipment storage case and a light source provided at a position corresponding to the light transmission portion.

[0010] In order to solve the above problems, a method for manufacturing an equipment storage case according to one embodiment of the present invention is a method for manufacturing a resin-made equipment storage case for a toilet seat device using a mold including a fixed mold, a movable mold, and ejector pins. The equipment storage case has a light-transmitting portion and a light-impermeable portion. The light-transmitting portion is formed in a part of the equipment storage case and has a thickness within a predetermined range. The light-impermeable portion is formed adjacent to the light-transmitting portion and has a thickness larger than the predetermined range. The outer surface of the light-transmitting portion is recessed inward with respect to the outer surface of the light-impermeable portion, and a recess is formed in the outer surface of the equipment storage case. The inner surface of the light-transmitting portion is recessed outward with respect to the inner surface of the light-impermeable portion, and a recess is formed in the inner surface of the equipment storage case. The ejector pins are arranged in a portion corresponding to the inner surface of the light-transmitting portion of the mold and can project into a cavity formed in the closed mold. The method for manufacturing the equipment storage case includes a step of closing the mold, a step of injecting molten resin into the cavity, a step of projecting the ejector pins into the cavity before the molten resin injected into the cavity hardens to form the recess in the inner surface of the equipment storage case, and a step of opening the mold and further projecting the ejector pins to release a cured resin adhered to the mold.

Effect of the Invention

[0011] In an equipment storage case, a toilet seat device, and a method for manufacturing an equipment storage case according to one embodiment of the present invention, there is no raised portion in the light-transmitting portion, and the maintainability is good.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

[0013] Hereinafter, an equipment storage case according to the present disclosure, a method for manufacturing the same, and a toilet seat device using the equipment storage case will be described based on embodiments. Note that the embodiments of the equipment storage case according to the present disclosure, the method for manufacturing the same, and the toilet seat device using the equipment storage case are not limited to the following embodiments, and various modifications can be made without departing from the technical idea according to the present disclosure.

[0014] (Embodiment) The equipment storage case according to the present embodiment, a method for manufacturing the same, and a toilet seat device using the equipment storage case will be described with reference to FIGS. 1 to 7.

[0015] (1) Toilet device As shown in FIG. 1, the equipment storage case 1 according to the present embodiment is a part of the toilet seat device 4. The toilet seat device 4 constitutes a part of the toilet device 5. The toilet device 5 includes a bowl portion (not particularly shown). The bowl portion is formed of resin. An equipment storage space is formed behind the bowl portion. A movable trap device is stored in the equipment storage space. The toilet device 5 includes a cover 51, and the bowl portion and the equipment storage space are covered by the cover 51 in the front, rear, left, and right directions. The toilet seat device 4 is provided above the rear portion of the bowl portion.

[0016] (2) Toilet seat device The toilet seat device 4 includes an equipment storage case 1, a toilet seat, and a toilet lid 43. The toilet seat is attached to the equipment storage case 1 so that it can be selectively placed on the rim at the upper end of the bowl part or stand up. The toilet lid 43 is attached to the equipment storage case 1 so that it can be selectively placed on the toilet seat or stand up.

[0017] (3) Equipment storage case As shown in FIG. 2, the equipment storage case 1 includes a case main body 13 that covers the internal space, and a case cover 14 that can be opened and closed so as to cover the case top plate 131 of the case main body 13. In the case main body 13, equipment such as a substrate 40 (see FIG. 3), an operation unit 44, a display unit 45, a remote control transceiver unit 46, a detergent tank, and a battery case are stored.

[0018] The equipment storage case 1 is formed of resin. In particular, the equipment storage case 1 is preferably formed of an ABS resin that is difficult to transmit light.

[0019] (3.1) Case cover The case cover 14 has a light-transmitting part 2 and a light-hardly-transmitting part 3. The light-transmitting part 2 is formed in a part of the equipment storage case 1 and has a thickness within a predetermined range. On the other hand, the light-hardly-transmitting part 3 is formed adjacent to the light-transmitting part 2 and has a thickness larger than the predetermined range. That is, the light-transmitting part 2 is a thin part formed in the case cover 14.

[0020] As shown in FIG. 3, the light-transmitting part 2 is a part that transmits light emitted from a light source 41 composed of an LED (Light Emitting Diode) stored in the case main body 13. The upper limit of the thickness range of the light-transmitting part 2 is preferably 0.35 mm that transmits the light emitted by the LED, but it may be 0.4 mm or 0.5 mm. As the thickness of the light-transmitting part 2 increases, it becomes more difficult for light to transmit, so the smaller the upper limit of the thickness range of the light-transmitting part 2, the more preferable.

[0021] Also, the lower limit of the thickness range of the light transmissive portion 2 is, for example, 0.3 mm, but it may be 0.2 mm or 0.1 mm. As the thickness of the light transmissive portion 2 increases, the light transmissive portion 2 becomes less likely to be damaged. Therefore, the larger the lower limit of the thickness range of the light transmissive portion 2, the more preferable. In the present embodiment, the thickness of the light transmissive portion 2 is 0.35 mm.

[0022] The light hardly transmissive portion 3 has a thickness greater than the upper limit of the thickness range of the light transmissive portion 2. In the present embodiment, the thickness of the light hardly transmissive portion 3 is 2.5 mm. The thickness of the case cover 14 is 2.5 mm in most parts other than the light transmissive portion 2, but in the portion adjacent to the light transmissive portion 2, the thickness continuously changes from 2.5 mm to 0.35 mm, which is the thickness of the light transmissive portion 2. Since the equipment storage case 1 is formed of an ABS resin that hardly transmits light, the light hardly transmissive portion 3 can be easily configured.

[0023] (3.2) Display unit The display unit 45 includes a light source 41, a light guide member 42, a display sheet 47, and the light transmissive portion 2. The light source 41 is mounted on a substrate 40 and is provided at a position corresponding to the light transmissive portion 2. The light source 41 and the substrate 40 are provided inside the case top plate 131.

[0024] The light guide member 42 is disposed between the inner surface 22 of the light transmissive portion 2 and the light source 41. The light guide member 42 is disposed in a hole formed in the case top plate 131. The light guide member 42 is inserted into the hole formed in the case top plate 131 from the outside of the case top plate 131, and the portion not inserted into the hole and the outer surface of the case top plate 131 are adhered by a double-sided tape (not shown). This makes it difficult for water to enter the case body 13 from the outer surface side of the case top plate 131. The display sheet 47 is attached to a portion of the outer surface of the light guide member 42 other than the portion corresponding to the hole formed in the case top plate 131.

[0025] The outer surface 21 of the light transmissive portion 2 is recessed inward with respect to the outer surface 31 of the light non-transmissive portion 3, and a recess 111 is formed in the outer surface 11 of the device housing case 1. That is, the outer surface 21 of the light transmissive portion 2 is a recess 111 that is recessed inward with respect to the outer surface 31 of the light non-transmissive portion 3 around the light transmissive portion 2. In this way, when the outer surface 11 of the device housing case 1 is cleaned by wiping, the cloth does not hit the light transmissive portion 2 protruding from the surrounding outer surface 11 and is difficult to wipe, so the maintainability is improved. Also, when cleaning by wiping, a situation where the protruding light transmissive portion 2 is pushed and the light transmissive portion 2 is damaged is less likely to occur.

[0026] The outer surface 21 of the light transmissive portion 2 is a concave surface that forms a part of a spherical surface. Thereby, it is easy to form a uniform concave surface on the outer surface 21 of the light transmissive portion 2.

[0027] The recess 111 formed in the outer surface 11 of the device housing case 1 preferably has a diameter of 7 mm or less. When the diameter of the recess 111 is 7 mm or less, it is difficult for a general adult finger to enter the recess 111, and even if a finger enters the recess 111, it is difficult to strongly press the outer surface 21 of the light transmissive portion 2. For this reason, the light transmissive portion 2 formed by the thin portion is less likely to be damaged.

[0028] The inner surface 22 of the light transmissive portion 2 is recessed outward with respect to the inner surface 32 of the light non-transmissive portion 3, and a recess 121 is formed in the inner surface 12 of the device housing case 1. Thereby, it becomes easier to form the light transmissive portion 2 having a thickness of 0.35 mm adjacent to the light non-transmissive portion 3 having a thickness of 2.5 mm. Further explaining, even if the depth of the recess 111 formed in the outer surface 11 of the device housing case 1 is not extremely deep, it is possible to achieve the thickness (0.35 mm) of the light transmissive portion 2 that is considerably smaller than the thickness (2.5 mm) of the light non-transmissive portion 3.

[0029] The device housing case 1 has a convex surface that protrudes inward and whose surface forms a part of a spherical surface on the inner surface 22 of the light transmissive portion 2. By positioning the convex surface on the inner surface 22 so as to correspond to the concave surface of the outer surface 21, it becomes easier to make the thickness of the light transmissive portion 2, which is a thin portion, uniform.

[0030] (4) Method for manufacturing a machine housing case The method for manufacturing a machine housing case is a method for manufacturing a resin machine housing case 1 for a toilet seat device 4 using a resin molding apparatus having a mold 6.

[0031] (4.1) Mold As shown in FIG. 4, the mold 6 includes a fixed mold 61, a movable mold 62, and an ejector pin 63.

[0032] The fixed mold 61 and the movable mold 62 are arranged so as to face each other vertically and be capable of mold closing and mold opening (proximity and separation). A cavity 60 is formed in the closed mold 6 (fixed mold 61 and movable mold 62) so as to sandwich a parting line.

[0033] A sprue (not shown) is formed in the fixed mold 61. Further, an ejector pin 63 is provided in the fixed mold 61 so as to penetrate vertically and be slidable. The ejector pin 63 is disposed at a portion corresponding to the inner surface 22 of the light transmitting portion 2 of the mold 6 and can project into the cavity 60 formed in the closed mold 6. The ejector pin 63 is in contact with the hole 611 formed in the fixed mold 61 without a gap.

[0034] The tip surface of the ejector pin 63 has a concave surface 631 that is recessed toward the base end side and whose surface forms a part of a spherical surface. By the ejector pin 63, a recess 121 is formed in the inner surface 12 of the machine housing case 1, and the inner surface 22 of the light transmitting portion 2 is formed by the concave surface 631. Further, a convex portion 621 is formed on the inner surface of the movable mold 62 corresponding to the concave surface 631 of the ejector pin 63, and the convex portion 621 forms a recess 111 on the outer surface 11 of the machine housing case 1.

[0035] (4.2) Resin molding apparatus The resin molding apparatus includes a mold clamping device (not shown) composed of a driving device such as a hydraulic cylinder. The movable mold 62 is moved by the mold clamping device so as to approach or separate from the fixed mold 61. Such a mold clamping device can be appropriately used with various known devices, is not particularly limited, and a detailed description thereof is omitted.

[0036] The resin molding apparatus further includes a pin driving device (not shown) composed of a driving device such as a hydraulic cylinder. The pin driving device includes a driving rod. The ejector pin 63 is moved up and down by the pin driving device. Such a pin driving device can be appropriately used with various known devices, is not particularly limited, and a detailed description thereof is omitted.

[0037] The resin molding apparatus further includes an injection device (not shown). The injection device injects the molten resin 7 (see FIG. 5) into the cavity 60. The injection device is, for example, a device that melts the resin material injected from a hopper into a cylinder and injects the molten resin 7 into the cavity 60 through a sprue from the nozzle at the tip of the cylinder by an injection mechanism. Such an injection device can be appropriately used with various known devices, is not particularly limited, and a detailed description thereof is omitted.

[0038] The resin molding apparatus further includes a control device (not shown) that controls the mold clamping device, the pin driving device, and the injection device. The control device has, for example, a microcomputer and controls the operations of the respective elements by executing a program stored in a ROM (Read Only Memory) or the like. Such a control device can be appropriately used with various known devices, is not particularly limited, and a detailed description thereof is omitted.

[0039] (4.3) Manufacturing method The manufacturing method of the equipment storage case includes a first step, a second step, a third step, and a fourth step.

[0040] (4.3.1) First step As shown in Fig. 4, in the first step, the fixed mold 61 and the movable mold 62 are closed. Further, in the first step, the ejector pin 63 is retracted with respect to the cavity 60 so as not to protrude into the cavity 60. The first step is executed by the control device driving the mold closing device and the pin driving device. At this time, the ejector pin 63 may slightly protrude into the cavity 60.

[0041] (4.3.2) Second step As shown in Fig. 5, in the second step, the molten resin 7 is injected into the cavity 60 of the closed mold 6. The molten resin 7 is a thermoplastic resin. The temperature of the molten resin 7 flowing into the mold 6 is, for example, 240°C. The second step is executed by the control device driving the injection device.

[0042] (4.3.3) Third step As shown in Fig. 6, in the third step, before the molten resin 7 injected into the cavity 60 hardens, the ejector pin 63 is protruded into the cavity 60. The third step is executed by the control device driving the pin driving device. Thereby, the recess 121 is formed on the inner surface 12 of the equipment storage case 1. The distance between the surface of the convex portion 621 and the concave surface 631 is made 0.35 mm, which is the thickness of the light transmissive portion 2, but correction may be made to 0.35 mm in consideration of the dimensional change (shrinkage) when the molten resin 7 cools to become the resin cured product 8 in advance.

[0043] (4.3.4) Fourth step As shown in Fig. 7, in the fourth step, the mold 6 is opened, the ejector pin 63 is further protruded, and the resin cured product 8 attached to the mold 6 is demolded. The fourth step is executed by the control device driving the mold closing device and the pin driving device. Thereby, the resin cured product 8 can be easily demolded by the ejector pin 63.

[0044] (5) Modification The light transmissive portion 2 and the light non-transmissive portion 3 may not be provided on the case cover 14, but may be provided on the case body 13 such as the case top plate 131, or may be any part of the equipment storage case 1.

[0045] The thickness range of the light transmissive portion 2 and the light non-transmissive portion 3 is not particularly limited.

[0046] The light source 41 is not limited to being composed of an LED.

[0047] The double-sided tape interposed between the outer surface of the case top plate 131 and the light guide member 42 does not necessarily have to be provided.

[0048] The diameter of the concave portion 111 does not have to be 7 mm or less, and can be set to an appropriate value such as 8 mm or less, 9 mm or less, 10 mm or less, 6 mm or less, or 5 mm or less.

[0049] (Summary) As is clear from the above-described embodiment and its modified examples, the resin-made equipment storage case 1 for the toilet seat device 4 of the first aspect has a light transmissive portion 2 and a light non-transmissive portion 3. The light transmissive portion 2 is formed in a part of the equipment storage case 1 and has a thickness within a predetermined range. The light non-transmissive portion 3 is formed adjacent to the light transmissive portion 2 and has a thickness larger than the predetermined range. The outer surface 21 of the light transmissive portion 2 is recessed inward with respect to the outer surface 31 of the light non-transmissive portion 3, and a concave portion 111 is formed on the outer surface 11 of the equipment storage case 1.

[0050] According to the first aspect, when cleaning the outer surface 11 of the equipment storage case 1 by wiping, since the cloth does not hit the light transmissive portion 2 protruding from the surrounding outer surface 11 and is difficult to wipe, the maintainability is improved. In addition, when cleaning by wiping, a situation where the protruding light transmissive portion 2 is pushed and the light transmissive portion 2 is damaged is less likely to occur.

[0051] The second aspect can be realized by combination with the first aspect. In the second aspect, the outer surface 21 of the light transmissive portion 2 has a concave surface that forms a part of a spherical surface.

[0052] According to the second aspect, it is easy to form a uniform concave surface on the outer surface 21 of the light transmissive portion 2.

[0053] The third aspect can be realized by combination with the first or second aspect. In the third aspect, the inner surface 22 of the light transmissive portion 2 is recessed outward with respect to the inner surface 32 of the light non-transmissive portion 3, and a recess 121 is formed in the inner surface 12 of the device housing case 1. The device housing case 1 has a convex surface that protrudes inward and whose surface forms a part of a spherical surface on the inner surface 22 of the light transmissive portion 2.

[0054] According to the third aspect, it becomes easy to make the thickness of the light transmissive portion 2 uniform.

[0055] The fourth aspect can be realized by combination with any one of the first to third aspects. In the fourth aspect, the device housing case 1 is formed of an ABS resin.

[0056] According to the fourth aspect, the light non-transmissive portion 3 can be easily configured.

[0057] The fifth aspect can be realized by combination with any one of the first to fourth aspects. In the fifth aspect, the recess 111 formed on the outer surface 11 of the device housing case 1 has a diameter of 7 mm or less.

[0058] According to the fifth aspect, it is difficult for a finger of a general adult to enter the recess 111, and it becomes difficult for the light transmissive portion 2 to be damaged.

[0059] The sixth aspect can be realized by combination with any one of the first to fifth aspects. In the sixth aspect, the toilet seat device 4 includes the device housing case 1 of any one of the first to fifth aspects and a light source 41 provided at a position corresponding to the light transmissive portion 2.

[0060] According to the sixth aspect, it becomes easy to configure the display portion 45 of the toilet seat device 4 by combining the light transmissive portion 2 of the device housing case 1 and the light source 41.

[0061] The seventh aspect can be realized in combination with the sixth aspect. In the seventh aspect, the toilet seat device 4 further includes a light guide member 42 between the inner surface 22 of the light transmissive portion 2 and the light source 41.

[0062] According to the seventh aspect, it becomes easier to guide the light from the light source 41 to the light transmissive portion 2.

[0063] The method for manufacturing the equipment storage case according to the eighth aspect is a method for manufacturing a resin-made equipment storage case 1 for the toilet seat device 4 using a mold 6 including a fixed mold 61, a movable mold 62, and an ejector pin 63. The equipment storage case 1 has a light transmissive portion 2 and a light non-transmissive portion 3. The light transmissive portion 2 is formed in a part of the equipment storage case 1 and has a thickness within a predetermined range. The light non-transmissive portion 3 is formed adjacent to the light transmissive portion 2 and has a thickness larger than the predetermined range. The outer surface 21 of the light transmissive portion 2 is recessed inward with respect to the outer surface 31 of the light non-transmissive portion 3, and a recess 111 is formed in the outer surface 11 of the equipment storage case 1. The inner surface 22 of the light transmissive portion 2 is recessed outward with respect to the inner surface 32 of the light non-transmissive portion 3, and a recess 121 is formed in the inner surface 12 of the equipment storage case 1. The ejector pin 63 is disposed at a portion corresponding to the inner surface 22 of the light transmissive portion 2 of the mold 6 and can project into a cavity 60 formed in the closed mold 6. The method for manufacturing the equipment storage case 1 includes a step of closing the mold 6, a step of injecting molten resin 7 into the cavity, a step of projecting the ejector pin 63 into the cavity 60 before the molten resin 7 injected into the cavity 60 hardens to form a recess 121 in the inner surface 12 of the equipment storage case 1, and a step of opening the mold 6 and further projecting the ejector pin 63 to release a resin cured product 8 adhering to the mold 6.

[0064] According to the eighth aspect, by using the ejector pin 63, a recess 121 can be easily formed in the inner surface 12 of the equipment storage case 1.

[0065] The ninth aspect can be realized in combination with the eighth aspect. In the ninth aspect, the tip surface of the ejector pin 63 has a concave surface 631 that is recessed toward the base end side and whose surface forms a part of a spherical surface.

[0066] According to the ninth aspect, by using the ejector pin 63, a convex surface whose surface forms a part of a spherical surface can be easily formed on the inner surface 22 of the light transmission part 2.

Explanation of Signs

[0067] 1 Equipment storage case 11 Outer surface 111 Recess 12 Inner surface 121 Recess 2 Light transmission part 21 Outer surface 22 Inner surface 3 Light non-transmissive part 31 Outer surface 32 Inner surface 4 Toilet seat device 41 Light source 42 Light guide member 6 Mold 60 Cavity 61 Fixed mold 62 Movable mold 63 Ejector pin 631 Concave surface 7 Molten resin 8 Resin cured product

Claims

1. A resin-made equipment storage case for a toilet seat device, having a light transmission part formed in part and having a thickness within a predetermined range, and a light-blocking part formed adjacent to the light transmission part and having a thickness larger than the predetermined range, wherein an outer surface of the light transmission part is recessed inward with respect to an outer surface of the light-blocking part, and a recess is formed in an outer surface of the equipment storage case, and an inner surface of the light transmission part is recessed outward with respect to an inner surface of the light-blocking part, and a recess is formed in an inner surface of the equipment storage case, and the inner surface of the light transmission part has a convex surface protruding inward and having a surface that is part of a spherical surface equipment storage case.

2. The equipment storage case according to claim 1, wherein the outer surface of the light transmission part has a concave surface that is part of a spherical surface.

3. The equipment storage case is formed of ABS resin. The equipment storage case according to claim 1 or 2.

4. The recess formed in the outer surface of the equipment storage case has a diameter of 7 mm or less. The equipment storage case according to any one of claims 1 to 3.

5. A toilet seat device comprising the equipment storage case according to any one of claims 1 to 4 and a light source provided at a position corresponding to the light transmission part.

6. The toilet seat device according to claim 5, further comprising a light guide member between the inner surface of the light transmission part and the light source.

7. A method for manufacturing an equipment storage case for a toilet seat device, using a mold equipped with a fixed mold, a movable mold, and ejector pins, wherein the equipment storage case has a light transmission part formed in part and having a thickness within a predetermined range, and a light-blocking part formed adjacent to the light transmission part and having a thickness larger than the predetermined range. The outer surface of the light-transmitting portion is recessed inward with respect to the outer surface of the light-blocking portion, and a recess is formed in the outer surface of the device housing case. The inner surface of the light-transmitting portion is recessed outward with respect to the inner surface of the light-blocking portion, and a recess is formed in the inner surface of the device housing case. The ejector pin is disposed at a portion corresponding to the inner surface of the light-transmitting portion of the mold and can project into the cavity formed in the closed mold. The method for manufacturing the device housing case is as follows. A step of closing the mold. A step of injecting molten resin into the cavity. Before the molten resin injected into the cavity hardens, a step of projecting the ejector pin into the cavity to form the recess in the inner surface of the device housing case. A step of opening the mold and further projecting the ejector pin to release the cured resin adhered to the mold. The method includes these steps. In the step of injecting molten resin into the cavity, the molten resin is injected in a direction intersecting the direction in which the ejector pin projects at a portion of the cavity where the ejector pin projects. Method for manufacturing a device housing case.

8. The tip surface of the ejector pin has a concave surface that is recessed toward the base end side and whose surface forms a part of a spherical surface. The method for manufacturing a device housing case according to Claim 7.

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