JP2021153000A - Manufacturing method of housing and housing - Google Patents

Abstract

To provide a housing in which a seal member is well adhered to and integrally molded and a manufacturing method of the same.SOLUTION: The manufacturing method of a housing includes a mold tightening step in which a housing body 17 is placed in a mold, a molding step in which molten resin is fed through a gate provided in the mold to fill a cavity for a seal portion to mold an annular seal portion 52 along a to-be-adhered surface 28a and a cavity for an anchor portion provided at a position most downstream of the molten resin fed through the gate and away from the cavity for the seal portion to mold a seal member 50, and a removal step in which the housing body 17 in which the seal member 50 is integrally molded is removed from the mold. In the removal step, an anchor portion 70 having a columnar portion 71 molded in the cavity for the anchor portion is pulled away from the housing body 17 together with the mold, and the state of adhesion of the seal member 50 to the to-be-adhered surface 28a is determined by the presence or absence of breakage at the columnar portion 71 of the anchor portion 70.SELECTED DRAWING: Figure 9

Description

The present invention relates to a method of manufacturing a housing and a housing.

For example, a terminal block mounted on a vehicle body panel or a case of equipment includes a resin housing for holding terminals.
In this type of terminal block, an annular sealing member is mounted around the housing assembly that fits into the panel mounting hole, and this rubber sealing member connects to the inner peripheral surface of the panel mounting hole. Some seal the space (see, for example, Patent Documents 1 and 2).
Further, there is also one in which an annular sealing member provided on the surface of the terminal block housing to be attached to the panel is pressed against the surface to be attached to the panel to seal the space between the terminal block and the panel (see, for example, Patent Document 3).

JP-A-2017-188289 Japanese Unexamined Patent Publication No. 2018-73652 Japanese Unexamined Patent Publication No. 2010-21933

By the way, in the housing of the terminal block described in Patent Documents 1 and 2 in which the seal member is brought into close contact with the inner peripheral surface of the mounting hole, the height of the terminal block housing is higher than that of the panel in order to evenly bring the seal member into close contact with the inner peripheral surface of the mounting hole. It had to be installed accurately, and the installation workability was poor.

On the other hand, in the terminal block described in Patent Document 3, by fastening and fixing the housing to the panel with bolts, the sealing member can be evenly pressed against the surface of the panel to ensure good sealing performance. However, this terminal block has a structure in which the seal member is attached to the housing by inserting a pin of the housing into the hole of the attachment piece molded into the seal member. Therefore, the manufacturing cost is high, and complicated mounting work for mounting the seal member on the housing is required.

Further, in the case of such a terminal block, it is conceivable to integrally mold the seal member on the housing by two-color molding or the like. However, it has been difficult to easily determine whether or not the rubber sealing member is well adhered to the resin housing. That is, for a product completed by integrally molding a seal member on the housing by two-color molding or the like, a judgment method in which the seal member is peeled off from the housing and surface analysis is performed with a scanning electron microscope, or a seal adhered to the housing. Any of the determination methods for performing a tensile test on a member cannot be performed in the product shipment inspection because the seal member is damaged.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing a housing in which a sealing member is satisfactorily adhered and integrally molded, and a housing.

The above object of the present invention is achieved by the following configuration.
(1) A housing in which a sealing member having a sealing portion for sealing between the mounting surface and the mounting surface of the housing to be mounted is integrally molded on the mounting surface facing the mounting surface. It is a manufacturing method of
The mold clamping process of installing the housing in the mold and
A cavity for a seal portion for feeding the molten resin from a gate provided in the mold and forming the seal portion along the adhered surface, and a seal portion for the seal portion at the most downstream of the molten resin fed from the gate. A molding step of filling the molten resin into the anchor portion cavity for molding the anchor portion provided at a position separated from the cavity and molding the seal member.
A step of taking out the housing in which the sealing member is integrally molded from the mold, and a step of taking out the housing.
Including
In the take-out step, the anchor portion having the columnar portion formed in the cavity for the anchor portion is separated from the housing together with the mold, and the adhered surface is subjected to the presence or absence of breakage in the columnar portion in the anchor portion. A method for manufacturing a housing, which comprises determining an adhered state of the seal member.

According to the method for manufacturing a housing having the configuration of (1) above, when the housing in which the sealing member is integrally molded is taken out from the mold, it is confirmed whether or not the columnar portion at the anchor portion is broken, so that the housing is abraded. The state of adhesion of the seal member to the landing surface can be easily determined. That is, when the housing is separated from the mold, a tensile force is applied to the columnar portion in the anchor portion. At this time, if the columnar portion in the anchor portion is broken by the tensile force, it can be determined that the seal portion of the seal member is sufficiently adhered to the adhered surface of the housing. Further, when the columnar portion is not broken by peeling the seal member from the adhered surface by the tensile force, it can be determined that the seal portion of the seal member is not sufficiently adhered to the adhered surface of the housing.
Therefore, according to the present invention, there is a determination method in which the seal member is peeled off from the conventional housing and surface analysis is performed with a scanning electron microscope, or a determination method in which a tensile test is performed on the seal member adhered to the housing. Since the adhesion state can be determined without breaking the seal member, it is suitable for shipping inspection.
Further, the adhesive force of the sealing member with respect to the adhered surface of the housing tends to gradually weaken toward the downstream side of the molten resin filled during molding. Therefore, by providing the anchor portion used for determining the adhesion state at the most downstream of the molten resin sent from the gate, a determination failure can be suppressed.

(2) The method for manufacturing a housing according to (1) above, wherein a constricted portion is formed in the columnar portion of the anchor portion in the molding step.

According to the method for manufacturing a housing having the configuration of (2) above, when a tensile force is applied to the anchor portion in the taking-out step, the columnar portion is broken at the constricted portion. That is, by providing the constricted portion in the columnar portion, the fractured portion in the columnar portion can be easily set.
Further, by adjusting the cross-sectional area at the constricted portion, the tensile force required for fracture for determining the adhesive force can be easily set. That is, the cross-sectional area is adjusted so that the constricted portion breaks when a tensile force exceeding the adhesive force of the sealing member to the adhesive surface of the housing is applied to the columnar portion, and the tensile force at which the constricted portion breaks is adjusted. It can be set to the tensile force used to determine the adhesive force.

(3) A housing that can be assembled on the surface to be mounted.
A seal member having a sealing portion integrally molded with the adhered surface facing the attached surface and sealing between the attached surface and the attached surface is provided.
The seal member is characterized by including an adhesion confirmation portion having a fracture surface used for determining the quality of the adhesion state of the seal member with respect to the adhesion surface at a position separated from the seal portion. housing.

According to the housing having the configuration of (3) above, it is provided with an adhesion confirmation portion having a fracture surface used for determining the quality of the adhesion state of the seal member with respect to the adhesion surface. Therefore, by providing this adhesion confirmation portion, it is possible to confirm that the seal member is a housing that is satisfactorily adhered to the surface to be adhered.

(4) The housing according to (3) above, wherein the fracture surface is arranged on the side to be adhered to the surface to be adhered to the surface of the seal portion in close contact with the surface to be attached.

According to the housing having the configuration of (4) above, the fracture surface of the adhesion confirmation portion is arranged on the side to be adhered to the seal surface of the seal portion. Therefore, it is possible to prevent the fracture surface of the adhesion confirmation portion from interfering with the surface to be attached, and to obtain a good sealing state by the sealing surface.

According to the present invention, it is possible to provide a method and a housing for manufacturing a housing in which the sealing member is satisfactorily adhered and integrally molded.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

It is a perspective view of the terminal block and the case provided with the housing which concerns on one Embodiment of this invention. It is a vertical sectional view of the terminal block attached to a case. It is a perspective view seen from the assembly part side of a housing. It is a perspective view of the adhesion confirmation part provided in the seal member. It is a schematic cross-sectional view of the mold for molding a seal member, and is an enlarged view of a part thereof. It is a perspective view of the molded product molded by a mold. It is a perspective view of the molded anchor part. It is a cross-sectional view in the vertical direction which shows the root part of the columnar part in an anchor part. It is a figure which shows the state after the tensile force is applied to the anchor part, (a) is the perspective view which shows the state which the columnar part in an anchor part is broken, (b) is the state which the thin-walled part in an anchor part is peeled off. It is a perspective view which shows. It is a figure which shows the anchor part molded at another molding position which concerns on the modification of this invention, and (a) and (b) are schematic cross-sectional views respectively.

Hereinafter, examples of embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a terminal block 11 and a case 1 provided with a housing 13 according to an embodiment of the present invention. FIG. 2 is a vertical cross-sectional view of the terminal block 11 attached to the case 1.
As shown in FIGS. 1 and 2, the housing 13 according to the present embodiment is composed of a housing body (housing) 17 and a holder 19. The holder 19 provided with the plurality of terminals 15 is assembled to the upper part of the housing main body 17. The housing 13 constitutes a terminal block 11 together with these terminals 15. The terminal block 11 is assembled to, for example, the case 1 of a drive motor mounted on a hybrid vehicle, an electric vehicle, or the like. The housing 13 is not limited to the terminal block 11, and may be a housing for various devices such as connectors and electrical junction boxes.

The housing body 17 and the holder 19 constituting the housing 13 are molded from an insulating resin, and the upper side of the holder 19 is the fastening portion 21 and the lower side of the housing body 17 is the assembly portion 23. The housing 13 has a flange portion 25 projecting to the outer peripheral side between the fastening portion 21 and the assembling portion 23, and a plurality of bolt insertion holes 27 are formed in the flange portion 25.

In the terminal block 11, the assembling portion 23 of the housing 13 is fitted into the mounting hole 2 formed in the case (attached portion) 1 of the drive motor or the like. In this case 1, a mounted surface 3 made of a smooth surface is formed at the edge of the mounting hole 2. The terminal block 11 is made by inserting a bolt 4 through a bolt insertion hole 27 of a flange portion 25 and screwing it into a screw hole 5 formed in the case 1 in a state where the assembling portion 23 of the housing 13 is fitted into the mounting hole 2. It is assembled to the mounted surface 3 of 1.

The housing body 17 of the housing 13 is provided with an annular sealing member 50 on the side to be assembled to the case 1. When the housing 13 is attached to the case 1, the seal member 50 comes into close contact with the attached surface 3 of the case 1. As a result, the space between the housing body 17 and the mounted surface 3 of the case 1 is liquid-tightly sealed.

The housing body 17 of the housing 13 has a plurality of terminal insertion holes 30 penetrating the front and back surfaces. A mounting recess 18 to which the holder 19 is mounted is provided above the terminal insertion hole 30. A seal member 31 having a seal hole 32 is mounted between the housing body 17 and the holder 19.

A nut accommodating recess 41 formed of a rectangular recess in a plan view is provided on the assembly portion 23 side of the housing 13. The side side of the nut accommodating recess 41 is open. The nut accommodating recess 41 accommodates a rectangular nut 42 in a plan view having a screw hole 42a from the side thereof. Further, a counterbore hole 43 is formed in the bottom portion 41a of the nut accommodating recess 41.

The terminal 15 mounted on the holder 19 of the housing 13 is formed of, for example, a conductive metal material such as copper or a copper alloy, and is a plate-shaped bus bar. The terminal 15 has a fastening hole 45 formed on one end side and a connection hole 46 formed on the other end side.

The terminal 15 is attached to the housing 13 by inserting the terminal 15 into the terminal insertion hole 30 with the end of the connection hole 46 facing the nut accommodating recess 41 in which the nut 42 is accommodated. Then, the terminal 15 is arranged at a position where the connection hole 46 faces the nut 42 accommodated in the nut accommodating recess 41 and communicates with the screw hole 42a.

Further, the terminal 15 inserted into the terminal insertion hole 30 is inserted into the seal hole 32 of the seal member 31. As a result, the inner peripheral surface of the seal hole 32 of the seal member 31 is brought into close contact with the outer peripheral surface of the terminal 15, and the space between the terminal 15 and the terminal insertion hole 30 is liquid-tightly sealed.

Wiring materials such as terminal fittings and bus bars on the device side are connected to the terminals 15 of the terminal block 11 on the assembly portion 23 side of the housing 13. In order to connect this wiring material to the terminal 15, a bolt (not shown) is inserted into a hole (not shown) formed in the wiring material, and this bolt is passed through the connection hole 46 of the terminal 15 to accommodate a nut accommodating recess 41. It is screwed into the screw hole 42a of the nut 42 housed in the above. As a result, the wiring material is fastened to and connected to the terminal 15 with the bolt and the nut 42. In this fastened state, the end of the bolt is passed through the counterbore 43 formed in the bottom 41a without interfering with the bottom 41a of the nut accommodating recess 41.

Further, a wiring material such as a terminal fitting or a bus bar on the device side of the connection partner is connected to the terminal 15 of the terminal block 11 on the fastening portion 21 side of the housing 13. In order to connect this wiring material to the terminal 15, a bolt (not shown) is inserted into a hole (not shown) formed in the wiring material, and this bolt is passed through a fastening hole 45 of the terminal 15 to form a nut (not shown). ). As a result, the wiring material is fastened to and connected to the terminal 15 with bolts and nuts.

Next, the seal member 50 provided on the housing body 17 of the housing 13 will be described in detail.
FIG. 3 is a perspective view of the housing 13 as viewed from the assembled portion side. FIG. 4 is a perspective view of the adhesion confirmation portion 55 provided on the seal member 50.

As shown in FIGS. 3 and 4, a seal mounting groove 28 is formed in the circumferential direction on the side of the housing 13 for assembling the housing body 17 to the case 1. The seal member 50 is provided in the seal mounting groove 28. The seal member 50 is molded from a flexible resin material such as rubber, and is integrally molded with the housing body 17 of the housing 13. As a result, the seal member 50 is adhered to the adhered surface 28a formed of the bottom surface of the seal mounting groove 28. The seal member 50 includes an annular seal portion (seal portion) 52 having a seal surface 51 on the side opposite to the adhesion side to the adhered surface 28a. The annular seal portion 52 has a thickness dimension larger than the depth dimension of the seal mounting groove 28. As a result, the sealing surface 51 of the annular seal portion 52 protrudes from the seal mounting groove 28 over the entire circumference. Then, in the seal member 50, the seal surface 51 of the annular seal portion 52 is brought into close contact with the attached surface 3, and the case 1 and the housing 13 are liquid-tightly sealed in the seal region where the seal surface 51 is in close contact. ..

The seal member 50 has an adhesion confirmation portion 55 and a gate portion 60. The adhesion confirmation portion 55 and the gate portion 60 are provided at positions separated from the annular seal portion 52 having the seal surface 51. The housing body 17 of the housing 13 has a bulging portion 29 that bulges outward in a part of the seal mounting groove 28, and the adhesion confirmation portion 55 and the gate portion 60 are respectively in the bulging portion 29. Have been placed.

The adhesion confirmation portion 55 has a thin-walled portion 56 that adheres to the adhered surface 28a of the seal mounting groove 28, and a plan-view circular broken portion 57 that slightly protrudes from the surface of the thin-walled portion 56. .. The surface of the broken portion 57 has a fracture surface 58. The adhesion confirmation portion 55 is thinner than the annular seal portion 52, whereby the fracture surface 58 is the adhered surface formed of the bottom of the seal mounting groove 28 rather than the position of the seal surface 51 of the annular seal portion 52. It is arranged on the 28a side. The gate portion 60 is a gate mark filled with molten resin when the seal member 50 is integrally molded with the housing body 17 of the housing 13. The adhesion confirmation portion 55 is provided on the side substantially opposite to the gate portion 60.

Next, a case where the seal member 50 is integrally molded with the housing body 17 of the housing 13 will be described.
FIG. 5 is a schematic cross-sectional view of a mold for molding the seal member 50 and an enlarged view of a part thereof. FIG. 6 is a perspective view of a molded product molded by a mold. FIG. 7 is a perspective view of the molded anchor portion. FIG. 8 is a vertical cross-sectional view showing the root portion of the columnar portion in the anchor portion. 9A and 9B are views showing a state after a tensile force is applied to the anchor portion, FIG. 9A is a perspective view showing a state in which the columnar portion in the anchor portion is broken, and FIG. 9B is a thin-walled portion in the anchor portion. It is a perspective view which shows the state which was peeled off.

As shown in FIG. 5, the seal member 50 is integrally molded with the housing body 17 of the housing 13 using, for example, two molds 101 and 102. The molds 101 and 102 are mold-fastened with the housing body 17 arranged between them (mold-fastening step).

Between these molds 101 and 102, a seal portion cavity 105 for molding the annular seal portion 52 and a position separated from the seal portion cavity 105 at the most downstream of the molten resin sent from the gate 107 are provided. An anchor portion cavity 109 for forming the anchor portion 70 is formed. That is, the gate 107 and the anchor portion cavity 109 are communicated with the seal portion cavity 105. The seal portion cavity 105 is filled from the gate 107 in a molten state of the resin to be the seal member 50. The anchor cavity 109 is provided at the most downstream position of the flow of the molten resin filled from the gate 107.

The anchor portion cavity 109 has a thin-walled molded portion 111, a columnar molded portion 113, and a large-diameter portion molded portion 115, and the thin-walled molded portion 111 communicates with the sealing portion cavity 105. The columnar forming portion 113 has a constricted forming portion 117 in the vicinity of the thin-walled forming portion 111.

As shown in FIG. 6, the anchor portion 70 and the gate pillar 75 are integrally molded with the seal member 50 in the molded body molded by the molds 101 and 102. The anchor portion 70 is formed by the cavity 109 for the anchor portion, and the gate column 75 is formed into the gate 107 (molding step). The gate pillar 75 is removed after being taken out from the molds 101 and 102 to become the gate portion 60.

As shown in FIG. 7, the anchor portion 70 has a columnar portion 71 formed by the columnar forming portion 113 and a large diameter portion 72 formed by the large diameter portion forming portion 115. The anchor portion 70 is integrally formed so as to stand upright from the thin-walled portion 56 formed by the thin-walled forming portion 111. As shown in FIG. 8, the anchor portion 70 is formed with a constricted portion 73 in the columnar portion 71. The constricted portion 73 is formed by the constricted forming portion 117, and is formed in the vicinity of the thin-walled portion 56 on the side to be adhered to the seal mounting groove 28 of the housing body 17 with respect to the sealing surface 51 of the annular seal portion 52. Will be done.

After cooling the molten resin filled from the gate 107, the molds 101 and 102 are separated from each other, and the molded product is taken out (take-out step).

At this time, in the anchor portion 70, a large diameter portion 72 having a diameter larger than that of the columnar portion 71 is engaged with the large diameter portion molding portion 115 of the mold 101. As a result, a tensile force is applied to the anchor portion 70 in the direction of being separated from the housing main body 17 (X direction in FIG. 7).

Then, as shown in FIG. 9A, when the tensile force reaches a preset tensile force Ps, the columnar portion 71 breaks at the constricted portion 73 whose diameter is reduced. As a result, the adhesion confirmation portion 55 in which the fractured portion 57 having the fractured surface 58 is formed on the upper portion of the thin-walled portion 56 appears on the housing main body 17 side. By confirming the adhesion confirmation portion 55 in the molded product, the operator visually confirms that the seal member 50 is sufficiently adhered to the adhered surface 28a of the seal mounting groove 28 of the housing body 17 as a good product. You can check with.

On the other hand, when the seal member 50 is insufficiently adhered to the adhered surface 28a of the seal mounting groove 28, a tensile force is applied to the anchor portion 70 as shown in FIG. 9B. As a result, the thin portion 56 is peeled off from the adhered surface 28a of the seal mounting groove 28. Then, the tensile force applied to the columnar portion 71 of the anchor portion 70 does not reach the tensile force Ps, and the constricted portion 73 does not break. That is, before the constricted portion 73 breaks, the thin-walled portion 56 is peeled off from the adhered surface 28a of the seal mounting groove 28. Therefore, the operator does not break the columnar portion 71 in the anchor portion 70 at the constricted portion 73, and the thin-walled portion 56 is peeled off. It can be visually confirmed that 50 is a defective product that is not sufficiently adhered.

Here, assuming that the cross-sectional area of the constricted portion 73 is A and the tensile force applied to the columnar portion 71 is P, the relationship between these cross-sectional areas A and the tensile force P is the tensile stress σ of the resin material of the sealing member 50. Therefore, the following equation (1) is obtained.

σ = P / A ... (1)

From this, the constricted portion 73 is such that the constricted portion 73 breaks when a tensile force P exceeding the adhesive force of the seal mounting groove 28 to the adhered surface 28a of the non-defective seal member 50 is applied to the columnar portion 71. The cross-sectional area A of the above is adjusted, and the tensile force P at this time may be set to the tensile force Ps. By adjusting the cross-sectional area A of the constricted portion 73 in this way, the tensile force Ps for determining the adhesive force of the seal member 50 to the housing body 17 can be easily set.

As described above, according to the method of manufacturing the housing 13 according to the present embodiment, when the housing body 17 in which the seal member 50 is integrally molded is taken out from the molds 101 and 102, the columnar portion 71 of the anchor portion 70 is taken out. By confirming the presence or absence of breakage, it is possible to easily determine the state of adhesion of the seal member 50 to the surface to be adhered 28a of the housing 13.

For example, a determination method in which the seal member 50 is peeled off from the housing 13 and surface analysis is performed with a scanning electron microscope for the finished product, or a determination method in which a tensile test is performed on the seal member 50 adhered to the housing 13. Cannot be performed in the shipping inspection because the seal member 50 is damaged. However, according to the above embodiment, the adhesion state can be determined without breaking the annular seal portion 52 that seals the case 1 with the attached surface 3, which is suitable for shipping inspection.

Further, the adhesive force with respect to the adhered surface 28a tends to weaken toward the downstream side of the resin filled during molding, but the anchor portion 70 used for determining the adhered state is fed from the gate 107 to the resin. Since it is provided at the most downstream of the above, it is possible to suppress a judgment failure.

Further, since the constricted portion 73 is formed in the columnar portion 71 of the anchor portion 70, the columnar portion 71 is broken at the constricted portion 73 when a tensile force is applied to the anchor portion 70 in the taking-out step. That is, by providing the constricted portion 73 in the columnar portion 71, the fractured portion in the columnar portion 71 can be easily set.

Further, by adjusting the cross-sectional area A of the constricted portion 73, the tensile force Ps required for breaking for determining the adhesive force can be easily set. That is, the cross-sectional area is adjusted so that the constricted portion 73 breaks when a tensile force exceeding the adhesive force of the sealing member 50 to the adhered surface 28a of the housing body 17 is applied to the columnar portion 71, and the constricted portion The tensile force at which 73 breaks can be set as the tensile force Ps used for determining the adhesive force.

Then, according to the housing main body 17 according to the present embodiment, the adhesion confirmation portion 55 having the fracture surface 58 used for determining the quality of the adhesion state of the seal member 50 with respect to the adhesion surface 28a is provided. Therefore, by providing the adhesion confirmation portion 55, it can be confirmed that the seal member 50 is the housing body 17 that is satisfactorily adhered to the adhesion surface 28a.

Further, since the fracture surface 58 of the adhesion confirmation portion 55 is arranged closer to the adhesion surface 28a than the seal surface 51, interference of the adhesion confirmation portion 55 with the attachment surface 3 of the fracture surface 58 is suppressed. A good sealing state can be obtained by the sealing surface 51.

The position of the anchor portion 70 formed on the seal member 50 is not limited to the above embodiment as long as the fractured portion does not protrude from the seal surface 51 when a tensile force is applied to the seal member 50.

For example, as shown in FIG. 10A, the anchor portion 70 may be formed on the side opposite to the forming side of the annular seal portion 52 in the housing main body 17. In this case, when the molds are released from the molds 101 and 102, the anchor portion 70 is engaged with the molds 102 to apply a tensile force.

Further, as shown in FIG. 10B, the anchor portion 70 may be formed on a side surface orthogonal to the forming surface of the annular seal portion 52 of the housing main body 17. In this case, a mold different from the molds 101 and 102 is provided so as to move laterally, and the anchor portion 70 is engaged with the mold to apply a tensile force.

Further, the anchor portion 70 may be provided inside the annular seal portion 52 as long as it is the most downstream of the molten resin filled from the gate 107.

The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, dimensions, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

Here, the features of the housing manufacturing method and the housing embodiment described above according to the present invention are briefly summarized and listed below in [1] to [4], respectively.
[1] The mounted surface (28a) of the housing (housing body 17) to be assembled to the mounted surface (3) of the mounted portion (case 1) facing the mounted surface (3). A method for manufacturing a housing in which a sealing member (50) having a sealing portion (annular sealing portion 52) for sealing between the surface (3) and the surface (3) is integrally molded.
A mold clamping step of installing the housing (housing body 17) in the mold (101, 102), and
A cavity for a seal portion for feeding molten resin from a gate (107) provided in the molds (101, 102) and forming the seal portion (annular seal portion 52) along the adhered surface (28a). (105) and the anchor portion cavity (109) for molding the anchor portion (70) provided at a position separated from the seal portion cavity (105) at the most downstream of the molten resin sent from the gate (107). ) And the molding step of filling the molten resin and molding the sealing member (50).
A step of taking out the housing (housing body 17) in which the sealing member (50) is integrally molded from the molds (101, 102) and a step of taking out the housing (housing body 17).
Including
In the take-out step, the anchor portion (70) having the columnar portion (71) formed in the anchor portion cavity (109) is separated from the housing (housing body 17) together with the mold (101), and the anchor is provided. A method for manufacturing a housing, characterized in that the state of adhesion of the seal member (50) to the adhered surface (28a) is determined based on the presence or absence of breakage in the columnar portion (71) of the portion (70).
[2] The method for manufacturing a housing according to the above [1], wherein in the molding step, a constricted portion (73) is formed in the columnar portion (71) in the anchor portion (70).
[3] A housing (housing body 17) to be assembled to the mounted surface (3) of the mounted portion (case 1).
A seal member (50) having a seal portion (annular seal portion 52) that is integrally molded on the adhered surface (28a) facing the attached surface (3) and seals between the attached surface (3). With
The seal member (50) is at a position separated from the seal portion (annular seal portion 52), and is used to determine the quality of the adhered state of the seal member (50) to the adhered surface (28a). A housing (housing body 17) comprising an adhesion confirmation portion (55) having a cross section (58).
[4] The fracture surface (58) is arranged on the adhesion surface (28a) side of the seal surface (51) of the seal portion (annular seal portion 52) that is in close contact with the attachment surface (3). The housing (housing body 17) according to the above [3].

1 ... Case (attached part)
3 ... Mounted surface 13 ... Housing 17 ... Housing body (housing)
28a ... Adhesion surface 50 ... Seal member 51 ... Seal surface 52 ... Circular seal portion (seal portion)
55 ... Adhesion confirmation part 58 ... Fracture surface 70 ... Anchor part 71 ... Columnar part 73 ... Constriction part 101, 102 ... Mold 105 ... Seal part cavity 107 ... Gate 109 ... Anchor part cavity

Claims (4)

A method for manufacturing a housing in which a sealing member having a sealing portion for sealing between the mounting surface and the mounting surface of the housing to be mounted is integrally molded with the mounting surface facing the mounting surface. And
The mold clamping process of installing the housing in the mold and
A cavity for a seal portion for feeding the molten resin from a gate provided in the mold and forming the seal portion along the adhered surface, and a seal portion for the seal portion at the most downstream of the molten resin fed from the gate. A molding step of filling the molten resin into the anchor portion cavity for molding the anchor portion provided at a position separated from the cavity and molding the seal member.
A step of taking out the housing in which the sealing member is integrally molded from the mold, and a step of taking out the housing.
Including
In the take-out step, the anchor portion having the columnar portion formed in the cavity for the anchor portion is separated from the housing together with the mold, and the adhered surface is subjected to the presence or absence of breakage in the columnar portion in the anchor portion. Determining the adhesion state of the seal member,
A method of manufacturing a housing, characterized in that. In the molding step, a constricted portion is formed in the columnar portion of the anchor portion.
The method for manufacturing a housing according to claim 1. A housing that can be assembled to the mounted surface of the mounted part.
A seal member having a sealing portion integrally molded with the adhered surface facing the attached surface and sealing between the attached surface and the attached surface is provided.
The seal member includes an adhesion confirmation portion having a fracture surface used for determining the quality of the adhesion state of the seal member with respect to the adhesion surface at a position separated from the seal portion.
The housing is characterized by that. The fracture surface is arranged on the side to be adhered to the sealing surface of the sealing portion that is in close contact with the surface to be attached.
The housing according to claim 3.

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