阅读说明：本技术 树脂成型体 (Resin molded article ) 是由 八木新太 清水勇勋 永山雅隆 大塚真司 于 2021-05-21 设计创作，主要内容包括：一种树脂成型体,包括：板部,其具有板状且在板部的板厚方向上两表面上具有用于组装配对构件的组装位置；基准部,其设置在所述板部的一表面上,并用于与所述配对构件对准；以及贯通孔,其在所述板厚方向上贯通所述基准部,并在所述板部的所述两表面上开口。所述基准部具有在所述板厚方向上延伸的柱状,以及所述贯通孔在所述基准部的延伸端处开口,并在所述板厚方向上延伸,以在所述板部的另一表面上开口。所述板部还包括端子,所述端子被设置为在所述另一表面上的所述组装位置处并在所述板厚方向上延伸。(A resin molded body comprising: a plate portion having a plate shape and having assembling positions for assembling a mating member on both surfaces in a plate thickness direction of the plate portion; a reference portion provided on a surface of the plate portion and used for alignment with the mating member; and a through hole that penetrates the reference portion in the plate thickness direction and opens at both surfaces of the plate portion. The reference portion has a columnar shape extending in the plate thickness direction, and the through hole is open at an extended end of the reference portion and extends in the plate thickness direction to open on the other surface of the plate portion. The plate portion further includes a terminal provided to extend in the plate thickness direction at the assembly position on the other surface.)

1. A resin molded body comprising:

a plate portion having a plate shape and having assembling positions for assembling a mating member on both surfaces in a plate thickness direction of the plate portion;

a reference portion provided on a surface of the plate portion and used for alignment with the mating member; and

and a through hole that penetrates the reference portion in the plate thickness direction and opens at both surfaces of the plate portion.

2. The resin molded body according to claim 1, wherein

The reference portion has a columnar shape extending in the plate thickness direction, an

The through hole is opened at an extended end of the reference portion, and extends in the plate thickness direction to be opened on the other surface of the plate portion.

3. The resin molded body according to claim 1 or 2, wherein

The plate portion further includes a terminal provided to extend in the plate thickness direction at the assembly position on the other surface.

Technical Field

The present invention relates to a resin molded body.

Background

In recent years, resin molded bodies used as various components mounted on vehicles and the like have been proposed. For example, one of the resin molded bodies of the related art has a plate portion having a plate shape, and includes: a connector section (an assembling position) in which a mating connector (a mating member) is assembled to one surface of the plate section, and which holds a terminal; and an apparatus housing portion and a substrate housing portion (assembly position) in which an apparatus and a circuit board (mating member) are assembled on one surface and the other surface of the plate portion, respectively (see, for example, patent document 1). Such a resin molded body of the related art is used as a component of an ABS unit of a vehicle.

CITATION LIST

Patent document

Patent document 1 JP-A-2018-

In this type of resin molded body, a reference portion (typically, a protruding boss portion) for alignment with the mating member is provided on one surface of the plate portion, and this reference portion can be used as a reference in the dimension inspection of the resin molded body.

In this case, for example, as a dimensional inspection, when measuring the relative position of an assembly position (for example, a terminal of a connector portion protruding to one side from a plate portion) provided on one surface of the plate portion in the same manner as the reference portion and the reference portion, the reference portion and the assembly position exist on the same surface of the plate portion and both can be visually recognized at the same time, and therefore the relative position of the assembly position is easily measured.

On the other hand, for example, as a dimensional inspection, when the relative position of an assembly position (for example, a terminal of a connector portion protruding from a plate portion to the other side) provided on the other surface of the plate portion opposite to the reference portion and the reference portion is measured, the reference portion and the assembly position are located on different surfaces of the plate portion, and therefore the relative position of the assembly position is not easily measured. For example, in this case, by setting a portion (for example, the outer periphery of the plate portion) that can be seen from both one side and the other side of the plate portion in the resin molded body as the relay point, and adding the relative position between the reference portion and the relay point and the relative position between the relay point and the assembly position, the relative position between the reference portion and the assembly position can be measured. However, when such a measurement method is used, measurement errors increase due to the amount of intervention of the relay point, and thus man-hours required for measurement also increase.

Disclosure of Invention

An object of the present invention is to provide a resin molded body which can improve the accuracy of dimensional inspection and reduce the man-hours required for dimensional measurement.

The resin molded body according to the present invention includes: a plate portion having a plate shape and having assembling positions for assembling a mating member on both surfaces in a plate thickness direction of the plate portion; a reference portion provided on a surface of the plate portion and used for alignment with the mating member; and a through hole that penetrates the reference portion in the plate thickness direction and opens at both surfaces of the plate portion.

Drawings

Fig. 1 is a perspective view of a resin molded body in which a circuit board and a device are assembled according to an embodiment of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view corresponding to fig. 2 of the resin molded body shown in fig. 1 in a single state.

Fig. 4 is a perspective view of the resin molded body shown in fig. 1 in a single state as viewed from below.

Fig. 5 is a bottom view of the resin molded body shown in fig. 1 in a single state.

Fig. 6 is a plan view of the resin molded body shown in fig. 1 in a single state.

Detailed Description

< example >

Hereinafter, a resin molded body 1 according to an embodiment of the present invention will be described with reference to the drawings.

As shown in fig. 1 to 4 (particularly fig. 2 to 3), the resin molded body 1 is a resin molded body integrally including a connector portion 10, a substrate housing portion 20, and a device housing portion 30. In this example, the resin molded body 1 is used as a part of an Antilock Brake System (ABS) of a vehicle. As described below, the substrate accommodating portion 20 accommodates the circuit board 60 for ABS control, and the device accommodating portion 30 accommodates the electromagnetic coil 71 forming the hydraulic valve 70. Hereinafter, for convenience of explanation, as shown in fig. 1 to 6, an up-down direction, a width direction, a front-back direction, an up, down, front, and back are defined. The up-down direction, the width direction, and the front-rear direction are orthogonal to each other. Further, in fig. 4 to 6, for convenience of explanation, the groove 13 and the terminal insertion hole 33, which will be described below, are omitted.

As shown in fig. 3, the resin molded body 1 includes a flat plate-like base plate 40, and the base plate 40 is located at a substantially central portion in the vertical direction of the resin molded body 1. On the lower surface of the front side portion of the substrate 40, a substantially rectangular tubular frame main body protruding downward is provided as the side wall 11 of the connector portion 10 (see also fig. 4). The area of the substrate 40 surrounded by the side wall 11 forms the inner wall 12 of the connector portion 10.

A tubular frame body is provided as a side wall 21 of the substrate accommodating portion 20 on an upper surface of an outer peripheral edge of the substrate 40 (see also fig. 4). In other words, the substrate 40 also serves as the inner wall 22 of the substrate accommodating portion 20.

On the lower surface of the rear side of the base plate 40, a substantially rectangular tubular frame body projecting downward is provided as the side wall 31 of the apparatus housing portion 30 so as to be arranged at a spacing on the rear side of the side wall 11 (see also fig. 4). The region of the substrate 40 surrounded by the side wall 31 forms an inner wall 32 of the device accommodating portion 30.

On the inner wall 12 of the connector section 10, a plurality of terminals 50 extending linearly in the up-down direction (in other words, the fitting direction) are pressed and fixed to penetrate each of a plurality of through holes (not shown) provided in the inner wall 12 and penetrating in the up-down direction. That is, the upper end portion of each terminal 50 is exposed in the substrate accommodating portion 20, and the lower end portion thereof is exposed in the connector portion 10.

A thickness T1 of a portion of the base plate 40 corresponding to the inner wall 12 is greater than a thickness T2 of another portion of the base plate 40. That is, the thickness T1 of the inner wall 12 of the connector portion 10 is larger than the thickness T2 of the inner wall 32 of the device housing portion 30 and the thickness T2 of the connecting portion 41 connecting the inner wall 12 and the inner wall 32 of the device housing portion 30.

On the upper surface of the inner wall 12 of the connector portion 10, an annular groove 13 recessed downward is formed at a position slightly inside the tubular side wall 11 and provided at a position avoiding the terminal 50. In other words, the groove 13 is formed to be recessed in the thickness direction of the inner wall 12 on the back surface (upper surface in fig. 3) of the inner surface (surface defining the fitting chamber) of the connector portion 10 (fitting chamber) defined by the side wall 11 and the inner wall 12. Due to the groove 13, the thin portion 14 of the inner wall 12 is formed near the connection position between the inner wall 12 and the connection portion 41 and is disposed at a position avoiding the terminal 50.

The "vicinity" may be a position that does not affect the support of the terminal 50 or the influence thereof is minimal, and deformation of the resin molded body 1 due to a difference in cooling time described below may be suppressed. For example, "vicinity" may be rewritten to a position between a connection position between the inner wall 12 and the connection portion 41 and a region of the inner wall 12 through which the terminal 50 penetrates.

Terminal insertion holes 33 (through holes) for inserting a pair of plate spring-like terminals 73 (see fig. 2) projecting upward from an upper portion of the electromagnetic coil 71 are formed at a plurality of positions of the inner wall 32 of the device housing portion 30, respectively. In this example, the thickness T3 of the side wall 31 of the device housing part 30 is slightly larger than the thickness T2 of the link part 41, but may be the same as the thickness T2 of the link part 41.

When a mating connector (not shown) is fitted to the connector section 10 (specifically, a fitting chamber defined by the side wall 11 and the inner wall 12), a terminal (female terminal, not shown) provided on the mating connector and the terminal 50 will be electrically connected.

As shown in fig. 1 and 2, the circuit board 60 for ABS control is accommodated and fixed in the substrate accommodating portion 20. When the circuit board 60 is fixed, the upper end portions of the plurality of terminals 50 are fixed to the substrate 20 in a state of penetrating each of a plurality of through holes (not shown) penetrating in the up-down direction and provided on the circuit board 60. Thus, each terminal 50 and the circuit board 60 are electrically connected.

The plurality of electromagnetic coils 71 are accommodated and fixed in the device accommodating section 30 such that the plate spring-like terminals 73 projecting upward from the electromagnetic coils 71 pass through the terminal insertion holes 33 and are exposed in the substrate accommodating section 20.

The upper end of each plate spring-like terminal 73 exposed on the substrate accommodating section 20 is press-contacted with the lower surface of the circuit board 60. Therefore, each electromagnetic coil 71 is electrically connected to a counterpart connector mounted on the connector section 10 via the circuit board 60.

The electromagnetic coil 71 has a cylindrical shape, and a rod-shaped plunger 72 is accommodated in the internal space so as to be movable in the up-down direction with respect to the electromagnetic coil 71 by an electromagnetic force generated by the electromagnetic coil 71. Solenoid 71 and plunger 72 form a hydraulic valve 70.

An actuator unit 80 for ABS control is mounted on the lower end surface of the side wall 31 of the device accommodating portion 30 to close the opening of the device accommodating portion 30. This mounting is performed by, for example, bolt fastening using a plurality of bolt fastening holes (not shown) provided in the side wall 31.

Although not shown, the actuator unit 80 has a built-in valve seat portion of the plurality of hydraulic valves 70, a pump or the like for pumping hydraulic oil stored in a reservoir or the like, and a motor 90 for driving the pump is mounted on a lower surface of the actuator unit 80.

The lower end of the plunger 72 accommodated in each electromagnetic coil 71 is inserted into a valve seat portion of the hydraulic valve 70 in the actuator unit 80. The up-down position of the plunger 72 is controlled by the electromagnetic force generated by each electromagnetic coil 71, thereby controlling the opening and closing of the corresponding hydraulic valve 70. In this way, the well-known ABS control is made to be executed.

To briefly describe the ABS control, when the slip ratio of a certain wheel exceeds a predetermined value, the hydraulic valves 70 corresponding to the wheels are controlled to start reducing the brake hydraulic pressures corresponding to the wheels from the hydraulic pressure corresponding to the brake pedal depression force generated by the master cylinder of the vehicle. Therefore, the slip ratio of the wheel is adjusted to be varied within a predetermined value. When the brake hydraulic pressure is decreased, the hydraulic oil returned to the reservoir is pumped by the pump driven by the motor 90 and returned to the master cylinder of the vehicle.

As shown in fig. 4 and 5, the device housing portion 30 is integrally formed with a protrusion 34 that protrudes inward from a part of the side wall 31 in the circumferential direction and is continuous with the inner wall 32. A cylindrical boss portion 35 projecting downward is integrally formed on the lower end face of the projection portion 34. The boss portion 35 is used to align with the actuator unit 80 mounted on the apparatus housing portion 30 to close the opening of the apparatus housing portion 30. That is, a groove (not shown) corresponding to the boss portion 35 is formed on the upper end face of the actuator unit 80, and by fitting the boss portion 35 and the groove, the apparatus housing portion 30 and the actuator unit 80 are aligned with each other.

The boss portion 35 is formed with a through hole 36 that penetrates the boss portion 35, the protruding portion 34 located above the boss portion 35, and the inner wall 32 (inner wall 22, substrate 40) in the vertical direction as a whole. That is, the through hole 36 has an opening 37 (see fig. 4 and 5) that opens at a projecting end surface (lower end surface) of the boss portion 35 and an opening 38 (see fig. 6) that opens at an upper end surface of the inner wall 22.

In the resin molded body 1, the boss portion 35 is used as a reference in the dimension inspection of the resin molded body 1. In this case, by using the through-hole 36 formed in the boss portion 35, even if the dimension inspection is performed from the lower side or the upper side of the resin molded body 1, the boss portion 35 can be used as a general reference in the dimension inspection.

More specifically, for example, as a dimensional inspection, it is assumed that, as shown in fig. 5, a width direction dimension H1 and a front-rear direction dimension H2 between a portion T1 of a terminal 50 of a connector portion 10 protruding downward from a lower end surface of an inner wall 12 of the connector portion 10 and a boss portion 35 are measured from the lower side of a resin molded body 1. In this case, both the portion T1 of the terminal 50 and the opening 37 of the boss portion 35 can be visually observed from the lower side of the resin molded body 1. Therefore, the width direction dimension and the front-rear direction dimension between the portion T1 of the terminal 50 and the opening 37 of the through-hole 36 can be directly measured as the width direction dimension H1 and the front-rear direction dimension H2 from the lower side of the resin molded body 1.

Similarly, for example, as a dimensional inspection, it is assumed that, as shown in fig. 6, from the upper side of the resin molded body 1, a width direction dimension H3 and a front-rear direction dimension H4 between a portion T2 of the terminal 50 of the connector portion 10 protruding upward from the upper end face of the inner wall 12 of the connector portion 10 (the inner wall 22 of the board housing portion 20) and the boss portion 35 are measured. In this case, both the portion T2 of the terminal 50 and the opening 38 of the boss portion 35 can be visually observed from the upper side of the resin molded body 1. Therefore, the width direction dimension and the front-rear direction dimension between the portion T2 of the terminal 50 and the opening 38 of the through-hole 36 can be directly measured as the width direction dimension H3 and the front-rear direction dimension H4 from the upper side of the resin molded body 1. In this way, by using the openings 37 and 38 of the through hole 36, even if the dimension inspection is performed from the lower side or the upper side of the resin molded body 1, the boss portion 35 can be used as a reference for the dimension inspection.

< operations and effects >

In the resin molded body 1 according to the present embodiment, the boss portion 35 for alignment with the mating member (actuator unit 80) is provided on the lower surface of the substrate 40 (inner wall 32), and the boss portion 35 is formed with the through hole 36 penetrating the boss portion 35 in the up-down direction and opening on both surfaces of the substrate 40. Therefore, even if the dimension inspection is performed from the lower side or the upper side of the substrate 40, the boss portion 35 (the through hole 36) can be used in common as a reference. Specifically, as the relative position of the assembling position T1 (see fig. 5) provided on the lower surface of the substrate 40 and the boss portion 35, the relative position of the assembling position T1 and the opening 37 on the lower side of the through hole 36 can be directly measured from the lower side of the substrate 40. Similarly, from the upper side of the base plate 40, as the relative position of the assembly position T2 (see fig. 6) provided on the upper surface of the base plate 40 and the boss portion 35, the relative position of the assembly position T2 and the opening 38 on the upper side of the through hole 36 can be directly measured. In this way, when the dimension inspection is performed from the lower side or the upper side of the substrate 40, the relative positions of the assembling positions T1 and T2 and the boss portion 35 can be directly measured by using the openings 37 and 38 of the through hole 36. Therefore, the accuracy of the dimension inspection is improved and the man-hours required for dimension measurement are reduced as compared with the resin molded body of the related art.

Further, as another effect, by forming the through hole 36 in the boss portion 35, deformation such as warpage due to molding shrinkage of the boss portion 35 can be suppressed. Therefore, the accuracy of alignment with the mating member (actuator unit 80) (as an original function of the boss portion 35) is improved. Further, by forming the through-hole 36 in the boss portion 35, the total mass of the resin molded body 1 can also be reduced, so the weight of the resin molded body 1 can be reduced, and the manufacturing cost can be reduced.

Further, in the resin molded body 1 according to the present embodiment, the boss portion 35 formed with the through hole 36 has a shape extending in a columnar shape in the up-down direction. Therefore, the thickness of the boss portion 35 can be designed to be thinner than in the case where the boss portion 35 formed with the through hole 36 has a shape different from the columnar shape. Therefore, deformation such as warpage due to molding shrinkage of the boss portion 35 can be further suppressed, and therefore the accuracy of alignment with the mating member (actuator unit 80) as the original function of the boss portion can be further improved.

Further, in the resin molded body 1 according to the present embodiment, the terminal 50 is provided to protrude upward from the upper surface of the substrate 40. Therefore, as the relative position of the terminal 50 protruding upward from the upper surface of the substrate 40 and the boss portion 35 from the upper side of the resin molded body 1, the relative position of the terminal 50 and the opening 38 on the upper side of the through hole 36 can be directly measured. Therefore, the accuracy of the dimensional inspection for the terminal 50 protruding upward from the upper surface of the substrate 40 is improved, and thus, the reliability of the electrical connection between the terminal 50 and the contact point (through hole) on the circuit board 60 side connected to the terminal 50 is also improved.

< other aspects >

The present invention is not limited to each embodiment described above, and various modifications may be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and may be appropriately modified, improved, or the like. Further, the material, shape, size, number, arrangement position, and the like of each component in the above-described embodiments are arbitrary and are not limited as long as the present invention can be achieved.

In the present embodiment described above, as the "reference portion" of the present invention, the boss portion 35 projecting downward from the lower end surface of the projection portion 34 is employed, wherein the projection portion 34 projects from a part of the side wall 31 in the circumferential direction toward the inside of the equipment housing portion 30. On the other hand, the boss portion 35 may be omitted, and the projection portion 34 itself projecting from a part of the side wall 31 in the circumferential direction toward the inside of the apparatus housing portion 30 may be adopted as the "reference portion" of the present invention. In this case, the through hole 36 has an opening on the lower end face of the protrusion 34 and an opening 38 on the upper end face of the inner wall 32 (see fig. 6).

Here, the features of the above-described embodiments of the resin molded body according to the present invention are briefly summarized and listed in the following [1] to [3 ].

[1]

A resin molded body (1) comprising: a plate section (40) having a plate shape and having, on both surfaces in a plate thickness direction of the plate section, assembly positions (10, 20, 30) for assembling mating members (60, 71, 80);

a reference portion (35) provided on one surface of the plate portion (40) and used for alignment with the mating member (80); and

and a through hole (36) that penetrates the reference portion (35) in the plate thickness direction and opens at both surfaces of the plate portion (40).

[2]

The resin molded body according to [1], wherein

The reference portion (35) has a columnar shape extending in the plate thickness direction, an

The through hole (36) is open at an extended end of the reference portion (35) and extends in the plate thickness direction to open on the other surface of the plate portion (40).

[3]

The resin molded body according to [1] or [2], wherein

The plate portion (40) further includes a terminal (50), the terminal (50) being provided at the assembling position (20) on the other surface and extending in the plate thickness direction.

In the resin molded body having the configuration of [1], a reference portion for alignment with the counterpart member is provided on one surface of the plate portion. A through hole is formed in the reference portion, the through hole penetrating the reference portion in the plate thickness direction and opening on both surfaces of the plate portion. Therefore, even if the dimension inspection is performed on one surface or the other surface of the plate portion, the reference portion (the through hole thereof) can be used as a reference for the dimension inspection. Specifically, as the relative position of the assembly position provided on one surface of the plate portion and the reference portion, the relative position may be directly measured with reference to the opening on the side of the through hole of the assembly position. Similarly, as the relative position of the assembly position provided on the other surface of the plate portion and the reference portion, the relative position may be directly measured with reference to the opening on the other side of the through hole of the assembly position. In this way, even if the dimension inspection is performed on one side or the other side of the plate portion, the relative position of the assembly position and the common reference point can be directly measured by using the opening of the through hole. Therefore, the resin molded body of such a configuration can improve the accuracy of dimensional inspection and reduce the man-hours required for dimensional measurement.

Further, as another effect, by the through hole formed in the reference portion, deformation such as warpage due to molding shrinkage of the reference portion can be suppressed. Therefore, the accuracy of alignment with the mating member (original function as a reference portion) is improved. Further, the through hole formed in the reference portion can reduce the weight of the resin molded body and the manufacturing cost.

In the resin molded body having the structure of [2], the reference portion in which the through-hole is formed has a shape (so-called boss shape) extending in a columnar shape in the plate thickness direction. Therefore, the wall thickness of the reference portion can be designed to be thinner than in the case where the reference portion has another shape. Therefore, it is possible to further suppress deformation such as warpage due to molding shrinkage of the reference portion, and to further improve the accuracy of alignment with the mating member (as an original function of the reference portion).

In the resin molded body having the configuration of [3], the terminal extending in the plate thickness direction is provided at an assembly position on the other surface of the plate portion. Therefore, the terminals can be arranged in the plate portion with high accuracy, thereby improving the reliability of the electrical connection at the contact points between the terminals and the counterpart terminals or the like. In this way, with the resin molded body of such a configuration, even when a component requiring particularly accurate placement is provided in the plate portion, a dimensional inspection with high accuracy can be performed with a small number of man-hours.

As described above, according to the present invention, it is possible to provide a resin molded body which can improve the accuracy of dimensional inspection and reduce the man-hours required for dimensional measurement.