Electrical component assembly, manufacturing method of electrical component assembly, and vehicle brake fluid pressure control device

Abstract

Provided are: an electronical component assembly which can simplify the structure of a housing, has excellent assembly properties for an electrical component, and can reduce costs; an electrical component assembly manufacturing method; and a vehicle brake hydraulic pressure control device. This electrical component assembly (1) is formed by attaching a control substrate assembly (3) to a housing (2). The control substrate assembly (3) includes a control substrate (11), and an electrical component (17) attached to the control substrate (11) through a connection terminal (14). The control substrate (11) includes securing holes (18) for securing the electrical component (17), and the electrical component (17) includes a terminal body part (17a) with which the connection terminal (14) is integrated by resin, and securing protrusions (17b) that are provided to the terminal body portion (17a) and fitted into the securing holes (18).

Description

[Technical field]

[0001] The present invention relates to an electric component assembly, a manufacturing method for an electric component assembly, and a brake fluid pressure control device for a vehicle. [Background technology]

[0002] Conventionally, there is known a vehicle brake fluid pressure control device that controls the brake fluid pressure applied to the wheel brakes in the brake system of a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle. Some vehicle brake fluid pressure control devices include a base body having a brake fluid passage formed therein and an electromagnetic valve attached to one surface of the base body. An electric component assembly is attached to one surface of the base body, and the electric component assembly includes a coil assembly, a bus bar terminal body, and a connector terminal body as electric components, and a housing that covers these. The electric components such as the coil assembly are connected to a control board disposed in the housing.

[0003] A known method for assembling a control board to a housing is disclosed in Patent Document 1. In Patent Document 1, electric components are pre-assembled to the housing, and the through-holes of the control board are aligned with the tips of the connection terminals of the electric components pre-assembled to the housing, and the control board is pressed toward the electric components. This brings the connection terminals of the electric components into pressure contact with the through-holes of the control board, and the electric components are electrically connected to the control board. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication W018 / 151264 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the assembly method of Patent Document 1 involves aligning each connection terminal of the electrical components and each through-hole of the control board via the housing, which results in a complex housing structure and requires high dimensional precision and high assembly precision for each electrical component and housing involved in positioning, resulting in issues such as increased costs.

[0006] The present invention aims to solve the above-mentioned problems and provide an electrical component assembly that can simplify the housing structure, has excellent assembly properties for electrical components, and reduces costs, a manufacturing method for an electrical component assembly, and a brake fluid pressure control device for a vehicle. [Means for solving the problem]

[0007] In order to achieve the above object, the electric component assembly of the present invention is configured by assembling a control board assembly to a housing. The control board assembly includes a control board and an electric component assembled to the control board via a connection terminal. The electric component assembly includes a board positioning hole provided on the control board for fixing the control board to the housing, and a housing side protrusion for fixing the control board that is provided on the housing and fits into the board positioning hole. In the control board assembly, the electric component is either a coil assembly for driving a solenoid valve or a bus bar terminal body connected to an electric motor.

[0008] According to the present invention, an assembly method can be adopted in which electrical components are pre-assembled to a control board to form a control board assembly, and then this control board assembly is assembled to a housing. Therefore, it is no longer necessary to adopt a conventional assembly method, that is, an assembly method in which electrical components are pre-assembled to a housing, and then the control board is assembled to the housing while aligning the connection terminals of the electrical components and the control board (through holes of the control board). Therefore, high dimensional accuracy and high assembly accuracy required for aligning the connection terminals of the electrical components and the control board (through holes of the control board) are no longer necessary, and the structure of the housing can be simplified. Furthermore, since there is no longer a need to insert-molde terminals or the like for connecting electrical components to the control board into the housing, the options for electrical connection methods increase. Furthermore, since the electric component assembly can be constructed simply by assembling the control board assembly into the housing, the assembly has excellent assembly properties. As described above, the electric component assembly of the present invention can reduce costs. Furthermore, the control board assembly can be fixed to the housing by fitting the housing side protrusion of the housing into the board positioning hole of the control board, which makes it possible to easily assemble the control board assembly to the housing, improving the ease of assembly. Additionally, a reduced cost electrical component assembly is obtained. The electrical component is preferably one of the coil assembly and the bus bar terminal body, and a connector terminal body.

[0009] It is also preferable that the control board has a fixing hole for fixing the electrical component, and the electrical component has a terminal main body portion in which the connection terminal is integrated with resin, and a fixing protrusion provided on the terminal main body portion and engaged with the fixing hole.

[0010] According to this configuration, the terminal body can be fixed to the control board by fitting the fixing protrusion of the terminal body into the fixing hole of the control board. Also, since the terminal body can be directly fixed to the control board, the attachment strength is improved, and when an unintended external force acts on the terminal body, the fixing protrusion resists the external force. This makes it possible to effectively prevent a load due to an external force from acting on the electrical connection between the connection terminal and the control board.

[0011] In addition, it is preferable that the connection terminals are press-fit terminals that are inserted into through holes provided in the control board.

[0012] According to this configuration, the electrical components can be easily connected to the control board, improving the ease of assembly.

[0017] A vehicle brake fluid pressure control device according to the present invention includes the above-mentioned electric component assembly, is connected between a master cylinder and a wheel brake, and controls the brake fluid pressure acting on the wheel brake.

[0018] In the vehicle brake fluid pressure control device of the present invention, since the electrical components can be reliably connected to the control board, it is possible to improve the product quality and the reliability of the brake fluid pressure control by the device, and also to reduce the cost of the vehicle brake fluid pressure control device.

[0019] The present invention also provides a method for manufacturing the electrical component assembly, comprising: an electrical component setting process for setting the electrical components in an assembly jig; an assembly process for setting the control board in the assembly jig and electrically connecting the connection terminals of the electrical components set in the assembly jig by the electrical component setting process to the control board to assemble the control board assembly; and a control board assembly setting process for setting the control board assembly assembled by the assembly process into the housing.

[0020] In the method for manufacturing an electric component assembly of the present invention, since the electric components can be positioned using an assembly jig, the positioning accuracy of the electric components is improved. Also, since the connection terminals of the electric components can be connected to the control board using the assembly jig, high dimensional accuracy and high assembly accuracy for positioning the electric components and the control board are not required, which results in excellent assembly and cost reduction.

[0021] The present invention also provides a method for manufacturing the electrical component assembly, comprising an electrical component setting process for setting the electrical components on an assembly jig, an assembly process for setting the control board on the assembly jig and electrically connecting the connection terminals of the electrical components set on the assembly jig by the electrical component setting process to the control board to assemble the control board assembly, and a control board assembly setting process for setting the control board assembly assembled by the assembly process into the housing, wherein the control board assembly setting process comprises a process of fitting the housing side protrusion into the board positioning hole and thermally crimping the housing side protrusion.

[0022] In the method for manufacturing an electric component assembly of the present invention, since the electric components can be positioned using an assembly jig, the positioning accuracy of the electric components is improved. Also, since the connection terminals of the electric components can be connected to the control board using the assembly jig, high dimensional accuracy and high assembly accuracy for positioning the electric components and the control board are not required, which results in excellent assembly and cost reduction. Furthermore, the control board assembly can be reliably fixed to the housing by thermal caulking, so that the control board assembly can be positioned with respect to the housing with high accuracy. Effect of the Invention

[0023] According to the electric component assembly, the manufacturing method of the electric component assembly, and the vehicle brake fluid pressure control device of the present invention, the housing structure can be simplified, the electrical components can be easily assembled, and costs can be reduced. [Brief description of the drawings]

[0024] [Figure 1] 1 is a perspective view showing a vehicle brake fluid pressure control device to which an electric component assembly according to a first embodiment of the present invention is assembled. [Diagram 2] 1 is a perspective view showing an electric component assembly according to a first embodiment of the present invention; [Diagram 3] 3 is a perspective view showing a state in which a control board assembly is being attached to a housing in the electric component assembly according to the first embodiment of the present invention. FIG. [Figure 4] FIG. 4 is an enlarged cross-sectional view taken along line IV-IV in FIG. [Diagram 5] 1 is a perspective view showing an assembly jig used when assembling a control board assembly of an electric component assembly according to a first embodiment of the present invention. FIG. [Figure 6] FIG. 2 is a perspective view showing a state in which an electrical component is assembled in an assembly jig. [Figure 7] 11 is a perspective view showing a state in which a control board is assembled to an assembly jig on which electrical components are assembled. FIG. [Figure 8] 5A and 5B are diagrams showing a connector terminal body used in an electric component assembly according to a second embodiment of the present invention, where (a) is a front view and (b) is a side view. [Figure 9] 9A and 9B are diagrams showing cross sections of a connector terminal body, where (a) is a cross section taken along line IX-IX in FIG. 8(b), and (b) is a partially cross-sectional side view. [Figure 10]10A and 10B are diagrams showing a connector terminal body of another type used in an electric component assembly according to a second embodiment of the present invention, where (a) is a front view and (b) is a side view. [Figure 11] 10A and 10B are cross-sectional views showing a connector terminal body of another embodiment, where (a) is a cross-sectional view taken along line XI-XI in FIG. 10B, and (b) is a partially cross-sectional side view. [Figure 12] 13 is an exploded perspective view showing another assembly method of the control board assembly. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, the same elements are designated by the same reference numerals, and duplicated description will be omitted. In the following, an electric component assembly that functions as a component of a vehicle brake fluid pressure control device will be described, but this is not intended to limit the use of the electric component assembly. In addition, when referring to the front, rear, left, right, top and bottom of the vehicle brake fluid pressure control device, the electric component assembly, and the control board assembly, the front, rear, left, right, top and bottom are based on the state in which the control board is arranged on the electric components (the direction shown in FIG. 1, etc.), but this is not intended to limit each direction. The front, rear, left, right, top and bottom in the state in which the electric component assembly is used (the state in which it is mounted on a vehicle, etc.) do not necessarily coincide.

[0026] (First embodiment) The vehicle brake fluid pressure control device 100 is connected between a master cylinder (not shown) and a wheel brake, and controls the brake fluid pressure acting on the wheel brake. 1, a vehicle brake fluid pressure control device 100 includes a base body 110 and an electric part assembly 1 mounted on one surface of the base body 110. A solenoid valve 120 corresponding to a brake system provided in the vehicle, various sensors such as a pressure sensor (not shown), an electric motor M, a reciprocating pump P, etc. are mounted on the base body 110. The electric part assembly 1 functions as an electronic control unit that detects the behavior of the vehicle body and controls the opening and closing of the solenoid valve 120 and the operation of the electric motor M.

[0027] The base 110 is a metal part formed in a substantially rectangular parallelepiped shape, and has a brake fluid passage (oil passage) (not shown) formed therein. Ports and the like to which piping leading to wheel brakes are connected are formed on the outer surface (not shown) of the base 110. The vehicle brake fluid pressure control device 100 varies the brake fluid pressure in the brake fluid passage by having the control board 11 provided in the electric component assembly 1 operate the solenoid valve 120 and the electric motor M based on the behavior of the vehicle body.

[0028] As shown in Fig. 2, the electric component assembly 1 includes a resin housing 2 and a control board assembly 3 attached to the housing 2. The housing 2 is a box body that is integrally fixed to the upper surface of a base 110 (see Fig. 1) by means of screw fastening or the like. The housing 2 accommodates the control board assembly 3, and also accommodates a solenoid valve 120 and a motor bus bar (not shown) that protrude from the base 110, as shown in Fig. 1.

[0029] As shown in Fig. 3, the housing 2 is open on both the upper and lower sides. The upper side is the side opposite to the base 110 (see Fig. 1, the same applies below) and is the side to which a lid (not shown) described below is attached. The lower side is the base 110 side. The housing 2 includes a plate-shaped bottom wall 24, a lid-side peripheral wall 25 provided on the upper side of the bottom wall 24, and a base-side peripheral wall 21 provided on the lower side of the bottom wall 24. The bottom wall 24 has a generally rectangular outer shape that is larger in the left-right direction of the figure than in the front-to-back direction of the figure. The lid-side peripheral wall 25 extends upward from the peripheral edge of the bottom wall 24 and has a generally rectangular outer periphery. The lid-side peripheral wall 25 forms a base-side accommodation chamber 25a on its inside that accommodates the upper sides of electrical components such as the generally rectangular control board 11 and the coil assembly 15. The upper opening of the lid-side peripheral wall 25 is sealed with a resin lid (not shown) that is fixed to the upper opening of the lid-side peripheral wall 25 by means of welding, adhesion, screw fastening, or the like.

[0030] The base-side peripheral wall 21 extends downward in the figure from the underside of the bottom wall 24, and has a generally octagonal outer periphery (partially shown). The base-side peripheral wall 21 defines a base-side housing chamber 21a therein for housing the coil assembly 15. The inner surface of the base-side peripheral wall 21 is shaped to match the outer surface of the coil assembly 15. A substantially cylindrical first protruding portion 130 that protrudes forward is formed on the inner surface of the rear wall of the base-side peripheral wall portion 21. A circular hollow portion 131 that penetrates in the vertical direction in the figure is formed inside the first protruding portion 130. The hollow portion 131 functions as an accommodation hole that accommodates the bus bar terminal body 16.

[0031] A substantially cylindrical second protrusion 24a protruding to the right in the figure is formed on the inner surface of the left wall side of the base-side peripheral wall 21. A substantially cylindrical third protrusion 24b protruding to the left in the figure is formed on the inner surface of the right wall side of the base-side peripheral wall 21. The outer peripheries of the second protrusion 24a and the third protrusion 24b are disposed on the sides of the four coil assemblies 15 accommodated in the base-side accommodation chamber 21a, and function as positioning members (movement restricting members) for each coil assembly 15. The second protrusion 24a and the third protrusion 24b are formed with a hollowed-out portion 24c penetrating in the vertical direction in the figure.

[0032] A connector terminal body accommodating chamber 26a is formed on the right side of the bottom wall 24 in the vertical direction of the figure, penetrating the bottom wall 24 in the vertical direction of the figure. The connector terminal body accommodating chamber 26a has a rectangular shape that is larger in the front-to-back direction of the figure than in the left-to-right direction of the figure. The connector terminal body accommodating chamber 26a is defined by a base-side coil peripheral wall 26 extending upward from the upper surface of the bottom wall 24, and a connector-side coil peripheral wall 22 extending downward from the lower surface of the bottom wall 24. The connector terminal body 17 is disposed in the connector terminal body accommodating chamber 26a.

[0033] Housing side protrusions 23 for positioning and fixing the control board 11 are provided at the front, rear, left and right positions of the bottom wall portion 24. Each housing side protrusion 23 has a cylindrical shape that can be fitted into a board positioning hole 12 provided at a corresponding position on the control board 11. The housing side protrusion 23 shown in Fig. 2 has a head 23a formed into a hemispherical shape by thermal caulking. Note that the shape of the head 23 may be any shape as long as it can fix the control board 11.

[0034] 3, the control board assembly 3 includes a control board 11, and a coil assembly 15, a bus bar terminal body 16, and a connector terminal body 17 as electrical components mounted on the control board 11. The coil assembly 15, the bus bar terminal body 16, and the connector terminal body 17 are electrically connected to the control board 11 via press-fit terminals 14 as connection terminals. Hereinafter, the coil assembly 15, the bus bar terminal body 16, and the connector terminal body 17 may be simply referred to as electrical components.

[0035] The control board 11 is a substantially rectangular board body on which an electric circuit is printed, and electronic components such as semiconductor chips are attached to the board body. A plurality of through holes 13 are formed in the control board 11. Press-fit terminals 14 of the coil assembly 15, the bus bar terminal body 16, and the connector terminal body 17 are inserted into each through hole 13 and are pressed against the wall of the through hole 13. The control board 11 performs control based on information obtained from sensors (not shown) and the like provided in the vehicle and programs stored in advance. Specifically, the control board 11 controls the supply of electricity to the coil assembly 15 and the electric motor M to control the opening and closing of each solenoid valve 120 and the driving of the electric motor M. Examples of sensors include pressure sensors, angular velocity sensors, acceleration sensors, and various other sensors.

[0036] The coil assembly 15 includes a resin bobbin 15a, a coil 15b wound around the bobbin 15a, and a yoke 15c attached to the bobbin 15a. A press-fit terminal 14 is provided on the base end of the bobbin 15a. The base end of the press-fit terminal 14 is embedded in the bobbin 15a by molding. A total of four coil assemblies 15 are provided corresponding to the positions where the solenoid valves 120 are provided, and as shown in FIG. 1, the coil assemblies 15 are accommodated in the housing 2 in a state surrounding the solenoid valves 120. Each coil assembly 15 is configured to generate a magnetic field around each solenoid valve 120 by passing electricity through the coil 15b from the control board 11 via the press-fit terminal 14, thereby driving each solenoid valve 120.

[0037] As shown in Fig. 3, the busbar terminal body 16 has a cylindrical resin tubular portion with a bottom. A press-fit terminal 14 is provided upright on the base-side end of the tubular portion of the busbar terminal body 16. A base end of the press-fit terminal 14 is embedded in the tubular portion of the busbar terminal body 16 by molding. The busbar terminal body 16 is attached to the control board 11 in correspondence with a hollow portion 131 of the base-side peripheral wall portion 21 of the housing 2, and is accommodated in the hollow portion 131 by assembling the control board assembly 3 to the housing 2. The busbar terminal body 16 has an internal connection portion (not shown) to which a busbar from the electric motor M is connected, and supplies power supplied from the control board 11 to the electric motor M.

[0038] As shown in FIG. 4, the connector terminal body 17 includes a terminal body 17a as a resin body in which a plurality of press-fit terminals 14 are integrated by molding. As shown in FIG. 3, the terminal body 17a has a generally rectangular column shape extending in the front-rear direction of the figure. A cover side surface 17d of the terminal body 17a is formed flat as a whole and abuts against a base side surface 11a of the control board 11. A pair of front and rear fixing protrusions 17b protrude from the cover side surface 17d of the terminal body 17a (only one of them is shown in FIG. 4). Each fixing protrusion 17b has a cylindrical shape that can be fitted into a fixing hole 18 formed in the control board 11 (see FIGS. 8(a) and (b)). The fixing protrusion 17b shown in FIG. 4 shows a state in which the head 17b1 is formed into a hemispherical shape by thermal caulking. The head 17b1 may have various shapes as long as it can fix the connector terminal body 17.

[0039] In the connector terminal body 17, the press-fit terminals 14 are arranged in two rows, one on the left and one on the right, with a gap in the front-rear direction in FIG. 3, with respect to the terminal body 17a. The center of each press-fit terminal 14 in the up-down direction in FIG. 3 is embedded (molded) in the terminal body 17a, and the upper and lower parts are exposed. Each press-fit terminal 14 has an inlet hole 14b1 through which the molded resin flows. The connector terminal body 17 of this embodiment has two types of press-fit terminals 14: press-fit terminals 14B arranged at the front and rear ends of the terminal body 17a, and press-fit terminals 14A arranged at other locations.

[0040] Such connector terminal body 17 is fixed to the lower surface of control board 11 by inserting the multiple press-fit terminals 14 into the respective through holes 13, fitting the respective fixing projections 17b into the respective fixing holes 18, and fixing the heads of the respective fixing projections 17b to the fixing holes 18 by a fixing means such as welding or adhesion. Then, the connector terminal body 17 is accommodated in the connector terminal body accommodating chamber 26a of the housing 2 during the process of assembling the control board assembly 3 to the housing 2. A connector (not shown) on the vehicle side is connected to the connector terminal body 17.

[0041] The terminal body 17a is not limited to abutting the entire cover side surface 17d against the base side surface 11a of the control board 11, but may be abutted only partially.

[0042] Next, a method for manufacturing the electric component assembly 1 will be described. Figure 5 is an oblique view showing an assembly jig used in manufacturing a control board assembly 3 that constitutes an electrical component assembly 1, Figure 6 is an oblique view showing electrical components assembled in the assembly jig, and Figure 7 is an oblique view showing a control board assembled in the assembly jig with the electrical components assembled.

[0043] The assembly jig 50 is a jig used for assembling electric components to the control board 11. As shown in Fig. 5, the assembly jig 50 includes a plate-shaped base 51, and board support parts 52 and 53, a coil support part 54, a bus bar terminal body support part 55, and a connector terminal body support part 56, which are each integrally provided on the base 51.

[0044] The base 51 is configured in a generally rectangular shape with a left-right length greater than a front-rear length in a plan view. The board support part 52 is plate-like extending in the front-rear direction and is provided along the left edge of the base 51. A mounting surface 52a is formed on the upper surface of the board support part 52 on which the left edge of the control board 11 (see FIG. 7) is placed. The board support parts 53 are columnar and provided in pair on the front and rear edges of the base 51. A mounting surface 53a is formed on the upper surface of each board support part 53 on which the front and rear edges of the control board 11 are placed.

[0045] The coil support parts 54 are cylindrical, and a total of four are provided at predetermined positions on the base 51. Each coil support part 54 is formed so that it can be inserted into the bobbin 15a of the coil assembly 15 (see FIG. 6). The base 51 is formed with a recess 54a around the base side end of each coil support part 54. Each recess 54a is shaped so that the base side end of the coil assembly 15 can be fitted into it. The coil assembly 15 is positioned on the base 51 by these coil support parts 54 and the recess 54a, and the press-fit terminal 14 provided on the coil assembly 15 is positioned.

[0046] The busbar terminal body support portion 55 has a cylindrical shape and is provided on the rear end side at approximately the center in the left-right direction of the base 51. The busbar terminal body support portion 55 is formed so as to be insertable into the busbar terminal body 16. The connector terminal body support portion 56 has a bottomed rectangular frame shape whose length in the front-rear direction is longer than its length in the left-right direction and is provided along the right edge portion of the base 51. An accommodating portion 56a having a size for accommodating the connector terminal body 17 is formed inside the connector terminal body support portion 56. An insertion hole 56b into which some of the press-fit terminals 14 of the connector terminal body 17 are inserted is formed at the bottom of the accommodating portion 56a.

[0047] The manufacturing method of the control board assembly 3 includes an electric component setting step, an assembly step, and a control board assembly setting step. The electric component setting process is a process of setting electric components in an assembly jig 50 . An example of a specific procedure is as follows. As shown in Fig. 6, first, the coil assembly 15 is inserted into each coil support portion 54, and the base side end portion of the coil assembly 15 is fitted into each recess 54a. Next, the busbar terminal body 16 is placed over the busbar terminal body support portion 55, and the two press-fit terminals 14 are aligned in the left-right direction. Then, the connector terminal body 17 is brought close to the accommodation portion 56a of the connector terminal body support portion 56, and each press-fit terminal 14 is inserted into the insertion hole 56b to accommodate the connector terminal body 17 in the accommodation portion 56a.

[0048] The assembly process is a process in which the control board 11 is set in an assembly jig 50, and the press-fit terminals 14 of each electrical component are electrically connected to the control board 11, thereby assembling the control board assembly 3. An example of a specific procedure is as follows. As shown in FIG. 7, the control board 11 is brought close to the assembly jig 50 from above, and each part of the control board 11 is aligned so as to be placed on the left mounting surface 52a and the front and rear mounting surfaces 53a on the right side, while the tip end of the press-fit terminal 14 of each electric component is aligned with the through hole 13 of the control board 11. After the control board 11 is aligned in this manner, the control board 11 is pushed toward the base 51. Then, the tip end of the press-fit terminal 14 of each electric component is inserted into the through hole 13 of the control board 11 and is pressed against the hole wall of the through hole 13. Also, each fixing protrusion 17b of the connector terminal body 17 is fitted into the fixing hole 18 of the control board 11. Then, each fixing protrusion 17b is thermally caulked to form heads 17b1, 17b1, and the connector terminal body 17 is fixed to the control board 11. In this way, the control board assembly 3 in which the electrical components are assembled to the control board 11 is completed.

[0049] The control board assembly setting process is a process of setting and assembling the assembled control board assembly 3 into the housing 2. The control board assembly setting process includes a crimping process, which will be described later. 3, in the control board assembly setting process, the control board assembly 3 is brought closer to the base-side accommodating chamber 25a from above the housing 2, and each coil assemblies 15 assembled on the underside of the control board 11 is accommodated from the base-side accommodating chamber 25a to the base-side accommodating chamber 21a, and the bus bar terminal body 16 is accommodated from the base-side accommodating chamber 25a into the hollow portion 131. In addition, the connector terminal body 17 is accommodated in the connector terminal body accommodating chamber 26a. Then, the board positioning holes 12 of the control board 11 are aligned with the housing side protrusions 23 of the housing 2, and the control board 11 is pushed (downward) toward the bottom wall portion 24. As a result, the housing side protrusions 23 are fitted into the board positioning holes 12, and the control board assembly 3 is assembled to the housing 2 (see FIG. 2).

[0050] The crimping process is a process for reliably fixing the control board assembly 3 (control board 11) to the housing 2 by thermal crimping. In the crimping process, each housing side protrusion 23 fitted into each board positioning hole 12 is melted to thermally crimp each housing side protrusion 23. That is, the housing side protrusion 23 protruding from the board positioning hole 12 is crushed while applying heat, forming a portion larger than the hole diameter of the board positioning hole 12. This prevents the housing side protrusion 23 from coming off, and the control board assembly 3 (control board) is securely fixed to the housing 2. This ensures that the control board assembly 3 (control board) is securely fixed to the housing 2.

[0051] According to the electric component assembly 1 of the present embodiment described above, it is possible to adopt an assembly method in which the electric components are assembled to the control board 11 in advance to form the control board assembly 3, and then the control board assembly 3 is assembled to the housing 2. Therefore, it is not necessary to adopt a conventional complicated assembly method, that is, an assembly method in which the electric components are assembled to the housing in advance, and then the control board is assembled to the housing while positioning the connection terminals (press-fit terminals) of the electric components and the control board (through holes of the control board). Therefore, according to the present embodiment, high dimensional accuracy and high assembly accuracy required for positioning the press-fit terminals 14 of the electric components and the through holes 13 of the control board (through holes of the control board) 11 are not required, and the structure of the housing 2 can be simplified.

[0052] Furthermore, since there is no longer a need to insert-molde terminals or the like for connecting electrical components to the control board 11 into the housing 2, the options for electrical connection methods increase. Furthermore, the electric parts assembly 1 is easy to assemble because it can be constructed simply by assembling the control board assembly 3 to the housing 2. As described above, the electric parts assembly 1 of the present invention can reduce costs.

[0053] Moreover, the terminal body 17a can be attached to the control board 11 by fitting the fixing protrusions 17b of the terminal body 17a into the fixing holes 18 of the control board 11. Furthermore, since the terminal body 17a can be directly fixed to the control board 11, the attachment strength is improved, and when an unintended external force acts on the terminal body 17a, the fixing protrusions 17b resist the external force. This makes it possible to preferably prevent a load due to an external force from acting on the electrical connection between the press-fit terminal 14 and the through hole 13.

[0054] Furthermore, since press-fit terminals 14 are used as connection terminals, electrical components can be easily connected to control board 11, improving ease of assembly.

[0055] Furthermore, the control board assembly 3 can be fixed to the housing 2 by fitting each housing side protrusion 23 of the housing 2 into each board positioning hole 12 of the control board 11. Therefore, the control board assembly 3 can be easily assembled to the housing 2, improving the ease of assembly.

[0056] Furthermore, since the electrical components are the coil assembly 15, the bus bar terminal body 16, and the connector terminal body 17, an electrical component assembly 1 can be obtained at reduced costs.

[0057] Furthermore, according to the vehicle brake fluid pressure control device 100 of the present invention, the coil assembly 15 (electrical component) can be reliably connected to the control board 11, thereby improving product quality and improving the reliability of the brake fluid pressure control by the device. Also, the cost of the vehicle brake fluid pressure control device 100 can be reduced.

[0058] Furthermore, in the manufacturing method of the electric component assembly 1 of the present invention, the positioning accuracy of the electric components is improved because the electric components can be positioned using the assembly jig 50. Moreover, each press-fit terminal 14 of the electric components can be connected to the control board 11 using the assembly jig 50, so high dimensional accuracy and high assembly accuracy for positioning the electric components and the control board 11 are not required, resulting in excellent assembly ease and cost reduction.

[0059] Furthermore, in the manufacturing method of the electric part assembly 1, the control board assembly setting step ensures that the control board assembly 3 is reliably fixed to the housing 2. This provides excellent assembly ease and allows costs to be reduced.

[0060] Second embodiment Next, an electric component assembly according to a second embodiment will be described. This embodiment differs from the first embodiment in that a connector terminal body 17A manufactured by a manufacturing method different from that of the first embodiment is used. Figure 8 shows a connector terminal body used in an electrical component assembly according to a second embodiment of the present invention, where (a) is a front view and (b) is a side view. Figure 9 shows a cross-section of the connector terminal body, where (a) is a cross-sectional view taken along line IX-IX in Figure 8(b) and (b) is a partially cross-sectional side view.

[0061] 9(a) and 9(b), the connector terminal body 17A of this embodiment has terminal arrangement holes 17j, 17k (partially shown in FIG. 9(a)) formed in the terminal main body 17a, and the press-fit terminals 14 arranged in the terminal arrangement holes 17j, 17k are fixed by melting resin. The terminal arrangement holes 17j, 17k are formed in advance when the terminal main body 17a is resin-molded. The terminal arrangement hole 17j is a hole for arranging the linear press-fit terminal 14A. The press-fit terminal 14A is inserted into the terminal arrangement hole 17j from below the terminal body 17a. On the other hand, the terminal arrangement hole 17k is a hole for arranging the crank-shaped press-fit terminal 14B. The press-fit terminal 14B is inserted into the terminal arrangement hole 17k from below the terminal body 17a. As shown in FIG. 9(b), each of the press-fit terminals 14A and 14B has an inflow hole 14b1 that allows the inflow of molten resin.

[0062] As shown in FIG. 8(b), approximately rectangular melt recesses 17g are formed on the side surface of terminal body 17a at positions corresponding to press-fit terminals 14A and 14B. Within each melt recess 17g, a melt portion 17c is formed that protrudes approximately hemispherically toward the side. Each melt portion 17c is formed at a position corresponding to the position where inlet hole 14b1 of each press-fit terminal 14A and 14B is formed. Melt recess 17g and melt portion 17c are similarly formed on the left side surface on the opposite side of terminal body 17a.

[0063] In the manufacturing process of the connector terminal body 17A, when the press-fit terminals 14A, 14B are fixed to the terminal body 17a, the press-fit terminals 14A, 14B are inserted into the terminal arrangement holes 17j, 17k from below, and then the connector terminal body 17A is sandwiched from both the left and right sides and heat is applied to the melt portions 17c. This melts the melt portions 17c, and the molten resin flows into the inlet holes 14b1 of the press-fit terminals 14A, 14B. As a result, the press-fit terminals 14A, 14B are molded and fixed to the connector terminal body 17A.

[0064] According to this embodiment, the press-fit terminals 14A, 14B can be fixed to the terminal body 17a by the simple means of applying heat to the molten parts 17c. Therefore, the connector terminal body 17A can be manufactured easily and with excellent productivity. In addition, the number of manufacturing method options is increased.

[0065] 10 and 11 show a connector terminal body 17B of another form manufactured by a manufacturing method different from that described above. Figure 10 shows another type of connector terminal body used in an electrical component assembly according to the second embodiment of the present invention, where (a) is a front view and (b) is a side view. Figure 11 shows a cross-section of the other type of connector terminal body, where (a) is a cross-sectional view taken along line XI-XI in Figure 10(b) and (b) is a partially cross-sectional side view.

[0066] As shown in Figures 10(a)(b) and 11(a)(b), the connector terminal body 17B includes a terminal body 17a and a plug body 17m that is attached to the lower part of the terminal body 17a. As shown in Figure 11(b), recessed engagement parts 17e are formed at the front and rear parts of the terminal body 17a. Meanwhile, hook parts 17f that can be engaged with the respective engagement parts 17e of the terminal body 17a are formed at the front and rear parts of the plug body 17m. The plug body 17m is fixed to the terminal body 17a by engaging the respective hook parts 17f with the respective engagement parts 17e of the terminal body 17a.

[0067] The terminal body 17a is formed with terminal arrangement holes 17j, 17k in the same manner as in the above embodiment. Meanwhile, the plug body 17m is formed with a plug side arrangement hole 17n communicating with the terminal arrangement hole 17j and a plug side arrangement hole 17p communicating with the terminal arrangement hole 17k. The plug side arrangement holes 17n, 17p have shapes corresponding to the shapes of the lower portions of the press-fit terminals 14A, 14B, and include holding portions 17r, 17s that hold the wide portions 14n, 14p of the press-fit terminals 14A, 14B. The holding portions 17r, 17s abut against the wide portions 14n, 14p of the press-fit terminals 14A, 14B from below, and hold the press-fit terminals 14A, 14B in a non-disconnecting manner.

[0068] In the manufacturing process of such a connector terminal body 17B, the press-fit terminals 14A, 14B are fixed as follows. First, the press-fit terminals 14A, 14B are inserted from below into the terminal arrangement holes 17j, 17k of the terminal body 17a. Then, the plug body 17m is brought close to the terminal body 17a from below, and the upper surface of the plug body 17m is brought into contact with the lower surface of the terminal body 17a while the lower portions 14c of the press-fit terminals 14A, 14B are inserted into the plug arrangement holes 17n, 17p. Then, the hook portions 17f of the plug body 17m are engaged with the engaging portions 17e of the terminal body 17a, and the plug body 17m is fixed to the terminal body 17a, and the press-fit terminals 14A, 14B are held in place.

[0069] According to this embodiment, the press-fit terminals 14A, 14B can be fixed to the terminal body 17a by simply attaching and engaging the plug body 17m to the terminal body 17a. Therefore, the connector terminal body 17B can be manufactured easily and with excellent productivity. In addition, the number of options for the manufacturing method is increased.

[0070] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit of the present invention. In the above-described embodiments, the press-fit terminals 14 have been described as connection terminals, but the present invention is not limited to this and other connection terminals may be used. In addition, in each of the above embodiments, a fixing protrusion 17b is provided on the connector terminal body 17 (electrical component) and a fixing hole 18 is provided on the control board 11, but conversely, a fixing hole may be provided on the connector terminal body 17 (electrical component) and a fixing protrusion may be provided on the control board 11.

[0071] In addition, in each of the above embodiments, the terminal main body portion 17a of the connector terminal body 17 is fixed to the control board 11 by sticking it therein, but this is not limited to this, and the coil assembly 15 or the bus bar terminal body 16 may also be fixed to the control board 11 by sticking it therein. In addition, in each of the above embodiments, the control board 11 is fitted into the housing 2 and fixed by thermal caulking, but the method of fixing the control board 11 is not limited to this, and various fixing methods can be used.

[0072] In addition, in the first embodiment, the electrical component assembly 1 is constructed and then fixed to the base 110. However, this is not limited to this. As shown in FIG. 12, the housing 2 may be attached to the base 110 first, and then the control board assembly 3 may be attached to the housing 2. [Explanation of symbols]

[0073] 1 Electrical Component Assembly 2. Housing 3 Control Board Assembly 11 Control Board 12 PCB positioning hole 13 Through Hole 14 Press-fit terminal (connection terminal) 15 Coil assembly (electrical part) 16 Busbar terminal body (electrical part) 17 Connector terminal body (electrical part) 17A, 17B Connector terminal body (electrical parts) 17a Terminal body (resin body) 17b Fixing protrusion 17b1 Head 18 Fixing hole 23 Housing side protrusion 23a head 100 Vehicle brake fluid pressure control device

Claims

1. An electrical component assembly configured by assembling a control board assembly in a housing, The control board assembly includes a control board, an electric component mounted on the control board via a connection terminal, a board positioning hole provided in the control board for fixing the control board to the housing; a housing-side protrusion for fixing the board, the protrusion being provided on the housing and fitted into the board positioning hole; 2. The electrical component assembly according to claim 1, wherein the electrical component in the control board assembly is either a coil assembly for driving a solenoid valve or a bus bar terminal body connected to an electric motor.

2. The electrical component assembly described in claim 1, characterized in that the electrical component is either the coil assembly or the busbar terminal body, and a connector terminal body.

3. the control board has fixing holes for fixing the electrical components; 3. The electrical component assembly according to claim 1, wherein the electrical component comprises a terminal body portion in which the connection terminal is integrated with resin, and a fixing protrusion provided on the terminal body portion and fitted into the fixing hole.

4. 4. The electric part assembly according to claim 1, wherein the connection terminal is a press-fit terminal that is inserted into a through-hole provided in the control board.

5. A vehicle brake fluid pressure control device comprising the electric component assembly according to any one of claims 1 to 4, 1. A brake fluid pressure control device for a vehicle, connected between a master cylinder and a wheel brake, for controlling brake fluid pressure acting on said wheel brake.

6. A method for manufacturing an electrical component assembly according to any one of claims 1 to 4, comprising the steps of: an electrical component setting step of setting the electrical component on an assembly jig; an assembly process of setting the control board on the assembly jig and electrically connecting the connection terminals of the electrical components set on the assembly jig in the electrical component setting process to the control board to assemble the control board assembly; a control board assembly setting step of setting the control board assembly assembled in the assembly step in the housing.

7. 2. A method for manufacturing an electrical component assembly according to claim 1, comprising the steps of: an electrical component setting step of setting the electrical component on an assembly jig; an assembly process of setting the control board on the assembly jig and electrically connecting the connection terminals of the electrical components set on the assembly jig in the electrical component setting process to the control board to assemble the control board assembly; a control board assembly setting step of setting the control board assembly assembled in the assembly step into the housing, The control board assembly setting step includes: a step of fitting the housing side projection into the board positioning hole and thermally caulking the housing side projection.

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