JP5828395B2 - Vehicle controller and manufacturing method thereof - Google Patents

Description

  The present invention relates to a controller for a vehicle and a manufacturing method thereof.

  Some controllers mounted on vehicles such as automobiles have a printed circuit board having an electronic circuit housed in a cylindrical case made of resin. One surface of this cylindrical case is opened for accommodating a substrate, and a case is formed by attaching a cover to the opening. In the case of such a cylindrical type case, there is a gap between the surface to which the cover is attached (opening) and the cover to which the cover is attached. In this case, since there is no gap for foreign matter to enter, it has a structure suitable for protecting the printed circuit board accommodated in the case from the outside, and has been apt to be adopted in recent years. In particular, in recent years, controllers for automobiles are required to satisfy protection standards such as IP40 (a structure in which a wire or a solid having a diameter or thickness of 1 mm or more does not enter inside) in the IEC (International Electrotechnical Commission) standard. In such a case, in the case of the cylindrical type case as described above, the printed circuit board in the case can be surely protected from the outside if it is designed in consideration of even one surface to which the cover is attached.

  FIGS. 11 to 14 show an example of a conventional controller in which a printed circuit board is accommodated in a cylindrical type case as described above. FIG. 11 is a plan view (A), a front view (B), and a side view, FIG. 12 is a diagram showing a flow of work for inserting a printed board into the cylindrical case and attaching a cover, and FIG. FIG. 14 is a plan view (A), a front view (B), a side view (C), and a rear view (D) of a cover attached to the cylindrical case.

  The conventional controller 100 shown in FIG. 11 to FIG. 14 inserts the printed circuit board 105 into the resin cylindrical case 120 through the opening 125H, and then covers the opening 125H with the cover 110 attached thereto. The inserted printed circuit board 105 is accommodated and held in a form that cannot be taken out.

  As shown in FIG. 11, the cylindrical case (case main body) 120 has main surface facing wall portions 122 facing the main surfaces 152, 153 on the front and back main surfaces 152, 153 side of the printed circuit board 105 accommodated. 13, while the one side of the board housing space sandwiched between the main surface facing walls 122 and 123 is left as an opening 125H for holding the printed circuit board 105 as shown in FIG. The side is covered with the outer peripheral side wall 124. Moreover, the cylindrical case 120 has the engagement fixing | fixed part 121 in the opening 125H side of these wall parts 124 in the two outer peripheral side wall parts 124 adjacent on both sides of the opening 125H.

  On the other hand, the cover 110 has an engagement fixing portion 111 having an engagement hole 111A that engages with the engagement fixing portion 121, and these engagement fixing portions are engaged with each other. The mold case 120 is engaged and fixed. In the cylindrical case 120, a printed circuit board 105 provided with electronic components 151 such as electronic circuits and elements is accommodated.

  The printed circuit board 105 is accommodated in the cylindrical case 120 in such a manner that the connector part 150 protrudes from the connector exposing hole 115H provided in the main body 115 of the cover 110 for external connection. Further, the printed circuit board 105 has a gap d having a predetermined width between the electronic component 151 and the inner surface of the main surface facing wall portion 123 of the cylindrical case 120 facing the electronic component 151 so that they do not physically contact each other. Thus, it is held in the cylindrical case 120.

Japanese Patent Laid-Open No. 2005-206802

  In recent years, the vehicle controller 100 is required to be further reduced in size and thickness in order to further improve the vehicle mountability while satisfying strict environmental standards such as vibration durability and high temperature and low temperature. However, when the resin-made cylindrical case 120 is reduced in size and thickness, the width of the gap d between the cylindrical case 120 and the accommodated printed circuit board 105 becomes narrower than before. As a result, the cylindrical case 120 is formed on the printed circuit board 105 accommodated therein due to expansion / contraction due to a change in temperature environment at the time of manufacture or after market outflow, vibration due to engine starting or running after mounting on the vehicle, and the like. There is a possibility of interference (physical contact) with the electronic component 151. In this case, not only is the appearance (surface) of the electronic component 151 damaged, but in the worst case, stress is applied to the solder connection portion of the electronic component 151, the solder surface is broken, and the electronic component 151 is detached from the printed circuit board 105. However, it is conceivable that a malfunction occurs as a controller.

  On the other hand, as a technique for securing a gap d between the resin-made cylindrical case 120 and the electronic component 51 on the printed circuit board 105 at a level at which mutual interference (physical contact) does not occur, as in Patent Document 1 In addition, attempts have been made in the past to develop a resin material that is less likely to warp and to derive optimum resin molding conditions that are less likely to warp. However, even in these methods, the amount of warpage of the molded cylindrical case 120 varies, and a large amount of warpage occurs when mass-produced, so that it cannot be a complete measure.

  The object of the present invention is to ensure a gap that does not cause interference (physical contact) between the resin case and the electronic components on the printed circuit board under the premise that the resin case is warped to some extent or expands and contracts. Another object is to provide an automobile controller and a method for manufacturing the same that are ensured and reduced in thickness by reducing the gap width as much as possible.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the first of the vehicle controllers of the present invention is:
A printed circuit board with various electronic components provided on the main surface, a cylindrical case body having an opening for accommodating the printed circuit board, and after receiving the printed circuit board from the opening in the case body, the opening is closed. A vehicle controller comprising a cover fixed to the case body,
The case body has main surface facing wall portions facing the main surfaces on the front and back main surface sides of the accommodated printed circuit board,
The printed circuit board has an electronic component non-arrangement region in which the electronic component is not arranged on the main surface of the printed circuit board facing at least one of the main surface facing walls.
The wall as a contact blocking part for preventing physical contact between the wall part and an electronic component disposed in an electronic component placement area excluding the electronic part non-placement area on the main surface of the printed circuit board facing the wall. Between the part and the electronic component non-arrangement region, there is a screen part interposed so as to abut both of them ,
The cover is a resin resin cover, and the partition part is integrally formed in a form extending from the inner surface of the resin cover to the inside of the case body,
Only one partition is provided on one side of the main surfaces of both the front and back sides of the printed circuit board .
The second of the controller for vehicles of the present invention which solves the above-mentioned subject is
A printed circuit board with various electronic components provided on the main surface, a cylindrical case body having an opening for accommodating the printed circuit board, and after receiving the printed circuit board from the opening in the case body, the opening is closed. A vehicle controller comprising a cover fixed to the case body,
The case body has main surface facing wall portions facing the main surfaces on the front and back main surface sides of the accommodated printed circuit board,
The printed circuit board has an electronic component non-arrangement region in which the electronic component is not arranged on the main surface of the printed circuit board facing at least one of the main surface facing walls.
The wall as a contact blocking part for preventing physical contact between the wall part and an electronic component disposed in an electronic component placement area excluding the electronic part non-placement area on the main surface of the printed circuit board facing the wall. Between the part and the electronic component non-arrangement region, there is a screen part interposed so as to abut both of them,
The cover is a resin resin cover, and the partition part is integrally formed in a form extending from the inner surface of the resin cover to the inside of the case body,
The partition portion is formed so as to extend to the center portion in the case body, and the entire extension portion to the center portion is a main surface facing wall portion that is subject to contact prevention, and the main surface facing wall. It is in contact with both the main surface of the printed circuit board on the part side.
The third of the controller for vehicles of the present invention that solves the above problem is as follows.
A printed circuit board with various electronic components provided on the main surface, a cylindrical case body having an opening for accommodating the printed circuit board, and after receiving the printed circuit board from the opening in the case body, the opening is closed. A vehicle controller comprising a cover fixed to the case body,
The case body has main surface facing wall portions facing the main surfaces on the front and back main surface sides of the accommodated printed circuit board,
The printed circuit board has an electronic component non-arrangement region in which the electronic component is not arranged on the main surface of the printed circuit board facing at least one of the main surface facing walls.
The wall as a contact blocking part for preventing physical contact between the wall part and an electronic component disposed in an electronic component placement area excluding the electronic part non-placement area on the main surface of the printed circuit board facing the wall. Between the part and the electronic component non-arrangement region, there is a screen part interposed so as to abut both of them,
The cover is a resin resin cover, and the partition part is integrally formed in a form extending from the inner surface of the resin cover to the inside of the case body,
The partition portion extends into the case main body in a non-contact manner with respect to the printed circuit board, and a protruding contact that protrudes from the extended portion toward the central portion of the printed circuit board and contacts the central portion. And a portion.

  According to the configuration of the present invention, there is a screen portion (vertical portion) between the electronic component non-arrangement region formed in advance on the main surface on the printed circuit board and the main surface facing wall portion of the case body facing this. Since it is formed, the warpage of the main surface facing wall portion is suppressed by contact with this partitioning portion, and the amount of warpage can be reduced. As a result, this main surface facing wall portion and this It is possible to always ensure a gap of a certain width or more between the electronic component on the main surface of the printed circuit board facing the substrate. For this reason, it is possible to prevent physical contact between the main surface facing wall portion and the electronic component of the printed board facing the main surface facing wall portion.

  The cover in the present invention is a resin cover made of resin, and can be configured such that the contact blocking portion is integrally formed so as to extend from the inner surface of the resin cover to the inside of the case body. According to this configuration, the number of parts constituting the vehicle controller remains the same as the conventional one, so that productivity such as assembly is not greatly impaired. Also, since the manufacturing process for assembling the parts does not increase, the manufacturing wage does not increase.

  In the present invention, the contact blocking portion is formed to extend toward the inside of the case main body, and the entire extension forming portion can be configured to come into contact with the main surface facing wall portion to be contact blocked. . According to this configuration, the contact blocking portion is formed so as to extend toward the inside of the case main body, and the entire portion comes into contact (surface contact) with the main surface facing wall portion over a wide area. The contact (surface contact) with the printed circuit board 5 on the side becomes stable.

  The contact blocking portion in the present invention includes an extending portion that extends into the case main body in a non-contact manner with respect to the printed circuit board, and projects from the extending portion toward the central portion of the printed circuit board. And a projecting abutting portion in contact therewith. According to this configuration, the contact area with the contact blocking portion on the printed circuit board can be reduced, and a larger electronic component can be arranged on the printed circuit board.

  The contact prevention part in this invention can be provided in the side by which the clearance gap between this printed circuit board is small among the main surface opposing wall parts of the front and back both main surface side of the printed circuit board accommodated in the case main body. According to this configuration, the contact blocking portion is formed on the side where the physical contact between the main surface facing wall portion and the electronic component on the printed circuit board facing the main surface is likely to occur. Can be omitted.

  The case main body in the present invention is made of resin, and can be configured such that the contact blocking portion is integrally formed so as to protrude from the main surface facing wall portion into the case main body. According to this configuration, the number of parts constituting the vehicle controller remains the same as the conventional one, so that productivity such as assembly is not greatly impaired.

A method for manufacturing a vehicle controller according to the present invention, comprising:
A first step of fixing the resin cover and the printed circuit board;
A second step of inserting the fixed cover and the printed circuit board through the opening of the case body and fixing the cover and the case body;
In this order.

  In particular, the contact blocking portion extends to the inside of the case body in a non-contact manner with respect to the printed circuit board, and protrudes from the extended portion toward the central portion of the printed circuit board and comes into contact with the central portion. If the manufacturing method is adopted, the cover and the printed circuit board are fixed in the first step, and in the subsequent second step, they are opened in the case body. Therefore, the contact area with the contact blocking portion on the printed circuit board can be reduced. That is, unlike the above manufacturing method, when the cover having the contact blocking portion is attached after the printed circuit board is first stored in the case body, the contact blocking portion is required when the printed circuit board is stored in the case body. Therefore, the entire area where the contact blocking portion slides on the main surface of the printed board must be set as the electronic component non-placement area. However, as in the above manufacturing method, the printed circuit board is first fixed to the cover, and then the cover is attached to the case body. There is no area where the blocking part slides. For this reason, on the main surface of the printed circuit board, only the region where the contact blocking portion abuts can be set as the electronic component non-arranged region, so that a larger number of electronic components can be arranged on the printed circuit board. In addition, assembly with slides is poor in workability, and there is a possibility of stressing other parts at the time of assembly, so there is no need for assembly with slides. No stress is applied to the part.

BRIEF DESCRIPTION OF THE DRAWINGS The top view, front view, and side view of the vehicle controller which are one Embodiment of this invention. FIG. 2 is a plan view, a front view, a side view, and a rear view of a cover of the vehicle controller in FIG. 1. The figure which shows the 1st example of the assembly | attaching method of the vehicle controller of FIG. The bottom view of the printed circuit board of FIG. The figure which shows the 2nd example of the assembly | attachment method of the vehicle controller of FIG. FIG. 3 is a plan view, a front view, a side view, and a rear view of a cover of a vehicle controller different from FIG. 2. The figure which shows the assembly | attachment method of the controller for vehicles which has the cover of FIG. The bottom view of the printed circuit board accommodated in the vehicle controller which has the cover of FIG. The figure which shows the assembly | attaching method of the controller for vehicles different from embodiment of FIG.1 and FIG.6. Sectional drawing of the controller for vehicles different from embodiment of FIG.1, FIG6 and FIG.9. The top view, front view, and side view of the conventional controller for vehicles. The figure which shows the assembly | attachment procedure of the controller for vehicles of FIG. Sectional drawing of the controller for vehicles of FIG. FIG. 12 is a plan view, a front view, a side view, and a rear view of a cover of the vehicle controller in FIG. 11.

  Hereinafter, an embodiment of a vehicle controller of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view (A), a front view (B), and a side view of an automobile controller of the present embodiment. FIG. 2 is a plan view (A), a front view (B), a side view (C), and a rear view (D) of a cover attached to the case main body. FIG. 3 is a diagram illustrating a method for housing a printed circuit board, and FIG. 4 is a diagram illustrating a main back surface of the printed circuit board.

  A controller 1 of this embodiment shown in FIG. 1 is a controller for an automobile, and includes a printed circuit board 5 on which various electronic components 51 are mounted together with an electronic circuit, and a cylinder having one surface as an opening 25H for accommodating the printed circuit board 5. And a cover 10 fixed to the case body 20 so as to close the opening 25H after the printed circuit board 5 is accommodated in the case body 20.

  The case body 20 is made of resin, and as shown in FIG. 1, main surface facing wall portions 22, 23 facing the main surfaces 52, 53 on the front and back main surfaces 52, 53 side of the accommodated printed circuit board 5. Respectively. Further, the case body 20 leaves one side of the board housing space formed between the main surface facing walls 22 and 23 as an opening 25H for housing the printed circuit board 5, and the other side is left. A cylindrical shape covered with the outer peripheral side wall 24 is formed. More specifically, the case main body 20 of the present embodiment has a rectangular parallelepiped shape having six surfaces, and includes main surface facing wall portions 22 and 23 that form a rectangular main surface, and one surface. And the elongated outer peripheral side wall portion 24 covering the remaining three surfaces, and the remaining one surface is formed as an opening for accommodating the substrate. And the cover 10 is assembled | attached in the form which plugs up this opening 25H, and the printed circuit board 5 accommodated in the case body 20 will be in the state which cannot be taken out.

  As shown in FIG. 2, the cover 10 is made of resin, and has a main body portion 15 that closes the opening of the case main body 20, and a connector exposure for exposing the connector portion 50 of the printed circuit board 5 to the main body portion 15. A hole portion 15H is formed. Further, on both the upper and lower sides of the main body 15, plate-like guide portions 12 that slide relative to the inner surfaces of the main surface facing walls 22 and 23 of the case main body 20 when assembled to the case main body 20. 13 is formed so as to protrude inwardly (inner side of the case main body 20) along the main surface facing wall portions 22 and 23.

  The cover 10 has openings 25H so as to cover the positions on the opening 25H side of the outer peripheral side wall 24 adjacent to both the left and right sides of the opening 25H of the case body 20 to be assembled on the left and right sides of the main body 15. It has the engagement fixing | fixed part 11 which protrudes in the side. On the other hand, the case main body 20 has the engagement fixing portions 21 at positions on the side of the openings 25H in both the outer peripheral side wall portions 24 adjacent on both the left and right sides of the opening 25H. The cover 10 and the case main body 20 are assembled and fixed by engaging the engagement fixing portions 11 and 21 with each other, and become a case body that accommodates the printed circuit board 5 therein.

  In the present embodiment, as the engagement fixing portion 21 of the case main body 20, both the outer peripheral side wall portions 24 adjacent on both the left and right sides of the opening 25 </ b> H project outward at positions according to the opening 25 </ b> H side. On the other hand, as the engagement fixing portion 11 of the cover 10, an engagement hole portion 11 having an engagement hole 11 </ b> A that engages with the engagement protrusion portion 21 of the case body 20 is provided. The cover 10 is engaged with and fixed to the case body 20 by the engagement protrusion 21 of the case body 20 being inserted into the engagement hole 11A of the cover 10. Since the engagement protrusion 21 of the present embodiment has a mountain shape that switches from the upward gradient to the downward gradient from the opening 25H side to the back side, when the cover 10 is assembled to the case body 20, the engagement protrusion 21 is engaged. In the form of causing elastic deformation in the hole 11, the mountain-shaped engagement protrusion 21 is moved over the portion of the engagement hole 11 on the back side of the engagement hole 11 </ b> A. After getting over, the engagement hole portion 11 is elastically restored. By this elastic restoration, the mountain-shaped engagement protrusion 21 is accommodated in the engagement hole 11A, that is, the mountain shape is formed in the engagement hole 11A. The engagement protrusion 21 is inserted. As a result, the cover 10 is assembled to the case body 20.

  The printed circuit board 5 has electronic parts 51 such as electronic circuits and elements on the front and back main surfaces 52 and 53 as in the conventional circuit shown in FIG. Further, a connector portion 50 for external connection is provided on one outer peripheral portion of the printed circuit board 5. In the state in which the printed board 5 is housed in the case body 20, the connector part 50 protrudes from the connector exposing hole 15 </ b> H provided in the body part 15 of the cover 10 for external connection.

  Further, the accommodated printed circuit board 5 is disposed between the mounted electronic component 51 and the inner surface of the main surface opposing wall portion 23 on the side of the surface 53 that faces and opposes the inner surface of the main surface opposing wall portion 23. They are held by the case body 20 in a form having a gap d for preventing such physical contact. In the present embodiment, the printed circuit board 5 is accommodated in the case main body 20 through the opening 25H, and is formed on the inner surface of the outer peripheral side wall 24 of the case main body 20 located on the back side in the accommodating direction. It is held in the case body 20 by 25B. The board fixing part 25B is held in such a manner that the end part 5B2 on the back side in the accommodation direction of the printed circuit board 5 is sandwiched from both sides in the thickness direction of the case main body 20 (opposite direction of the main surface opposing wall parts 22 and 23). ) On the other hand, a substrate fixing portion 15B is also formed on the back surface of the main body portion 15 of the cover 10, thereby holding the printed circuit board 5 accommodated in the case main body 20. The board fixing part 15B is also held (clamped and held) by sandwiching the end part 5B1 on the front side in the accommodation direction of the printed board 5 from both sides of the case body 20 in the thickness direction.

  By the way, in this embodiment, mutual contact is made between the wall portion which is at least one of the main surface facing wall portions 22 and 23 and the wall portion and the printed circuit board (including the electronic component 51) 5. A partitioning portion 14 is interposed as a contact blocking portion 14 for blocking. Thereby, it is comprised so that a contact with the wall part and the printed circuit board 5 (electronic component 51) may be prevented. In the present embodiment, of the main surface facing walls 22 and 23, the main surface facing wall 23 having a smaller gap width between the printed circuit board 5 and the wall 23 and the printed circuit board 5. A contact blocking portion 14 is provided.

  The partition part which makes the contact prevention part 14 is extended in the form which straddles both the inner surface of the main surface opposing wall part 23, and the main surface 53 of a printed circuit board, and is arrange | positioned in the form which contact | abuts to those both surfaces. The contact blocking portion 14 of the present embodiment is integrally formed on the resin cover 10 so as to extend from the inner surface of the main body portion 15 to the inside of the case main body 20. Specifically, the contact blocking portion 14 of the present embodiment is integrated with the guide portion 13 on the main body portion 15 side of the cover 10 (here, the shape protruding from the guide portion 13 toward the guide portion 12). The column-shaped portion extending from the inner surface of the main body portion 15 to the central portion of the case main body 20, and the entire surface 143 on the main surface facing wall portion 23 side of the column-shaped portion extending and formed is The main surface facing wall portion 23 is in contact (surface contact) with the inner surface 145, and the entire surface 145 on the printed circuit board 5 side is in contact with both the main surface 53 of the printed circuit board 5 (surface contact). The presence of the contact blocking portion 14 suppresses inward warping of the wall portion 23 of the resin case 20 and prevents the wall portion 23 from warping and physically contacting the electronic component 51 on the printed circuit board 5. be able to. In particular, since the central portion of the resin case 20 on the main surface facing wall portion 23 side that is liable to warp is in contact with the contact blocking portion 14, the warpage at that portion is blocked and physical contact with the surrounding electronic component 51 does not occur. It is like that. Further, since the contact blocking portion 14 is formed in a simple column shape and integrated with the cover 10, it is not necessary to make the structure of the mold so complicated as compared with the conventional case when molding this.

  3 and 5 show an assembling method (manufacturing method) of the automobile controller 1 of the present embodiment.

  The assembly method of FIG. 3 includes a first step of inserting the printed circuit board 5 through the opening 25H of the case body 20 which is a single resin injection molded body, and accommodating and holding the printed circuit board 5 in the case body 20. A second step of attaching a cover 10 that is a single resin injection molded body so as to cover the opening 25H of the case main body 20 in which the printed board 5 is accommodated and held is provided in this order.

  In the first step (see FIG. 3A), the printed circuit board 5 is inserted through the opening 25H of the case main body 20 from the opposite side with the connector portion 50 on the near side, and is at the back of the case main body 20. An end portion 5B2 on the back side (opposite side of the connector portion 50) of the printed circuit board 5 is held by the substrate fixing portion 25B formed on the inner surface of the outer peripheral side wall portion 24.

  In the second step (see FIG. 3B), the inner surface of the cover 10 is made to approach toward the opening 25H of the case body 20 in which the printed circuit board 5 is accommodated and held. When approaching, the connector portion 50 is inserted into the connector exposing hole 15H and protrudes to the outside. Further, when approaching, the contact blocking portion 14 extending from the inner surface of the cover 10 is slid between both the main surface 53 of the printed circuit board 5 and the inner surface of the main surface facing wall portion 23. Then, the engagement protrusion 21 of the case body 20 is engaged with the engagement hole 11 of the cover 10 as described above, whereby the case body 20 and the cover 10 are assembled, and the printed circuit board 5 is placed inside. The vehicle controller 1 accommodated and held in the vehicle is completed (see FIG. 3C).

  When the case main body 20 and the cover 10 are assembled, the front end 5B1 of the printed circuit board 5 is held by the board fixing portion 15B provided on the inner surface side of the main body 15 of the cover 10. It becomes. As a result, the printed circuit board 5 is fixed to the board 5 in such a manner that gaps 7 and 6 having a predetermined width are formed on both the main surfaces 52 and 53 side of the board 5 between the opposing main surface facing walls 22 and 23. Held by the portions 15B and 25B. The width of the gap varies depending on the warpage of the main surface facing walls 22 and 23. In particular, the main surface facing wall 23 adjacent to the printed circuit board 5 is in physical contact with the electronic component 51 on the printed circuit board 5 due to the warpage. However, warpage is suppressed by interposing the contact blocking portion 14 therebetween, so that physical contact does not occur.

  Further, the contact blocking portion 14 of the present embodiment is formed in a form extending linearly from the main surface facing wall portion 23 side at the center of the inner surface of the main body portion 15 of the cover 10 in a direction perpendicular to the inner surface. The cover 10 enters the inside of the case body 20 in such a manner that the contact blocking portion 14 slides on the printed circuit board 5 and the main surface facing wall portion 23 in the linear direction. As shown in FIG. 4, the area on the main surface 53 of the printed circuit board 5 that contacts when the contact blocking portion 14 slides is an electronic component non-placeable area (electronic component non-placed area) 54, It is a flat surface area where the electronic component 51 such as an element is not arranged.

  On the other hand, in the assembling method of FIG. 5, the first step of fixing (attaching and holding) the printed circuit board 5 to the cover 10 which is a single resin injection molded body, and the cover 10 to which the printed circuit board 5 is fixed A second step of inserting (incorporating) the cover 10 into the case main body 20 in this order.

  In the first step (see FIG. 5A), the board fixing portion 15B provided on the inner surface side of the main body portion 15 of the cover 10 is opposite to the insertion tip side (back side) into the case main body 20. The front end 5B1 is held. At this time, the printed circuit board 5 is in a state of being supported on the surface 145 of the contact blocking unit 14, so that it is difficult for a load to fall off from the holding state by the substrate fixing unit 15 </ b> B to occur on the cover 10. On the other hand, a stable holding state can be maintained. At this time, the cover 10 is inserted into the connector portion 50 of the printed circuit board 5 from the inside of the connector exposing hole 15H of the main body portion 15 and protrudes to the outside. In the assembling method of FIG. 3, the contact blocking portion 14 is slid with respect to the main surface 53 of the printed circuit board 5, but this is not necessary here.

  In the second step (see FIG. 5B), the inner surface of the cover 10 on which the printed circuit board 5 is fixed (held) as described above is brought closer to the opening 25H of the case body 20. When making it approach, the contact prevention part 14 extended from the inner surface of the cover 10 is slid on the inner surface of the main surface opposing wall part 23. Then, the engagement protrusion 21 of the case body 20 is engaged with the engagement hole 11 of the cover 10 as described above, whereby the case body 20 and the cover 10 are assembled, and the printed circuit board 5 is placed inside. The automobile controller 1 accommodated and held in the vehicle is completed (see FIG. 5C).

  When the case body 20 and the cover 10 are assembled, the end 5B2 on the back side of the printed circuit board 5 is formed by the board fixing portion 25B provided on the inner surface of the outer peripheral side wall 24 on the back side of the case body 25. It will be held. Thus, as in the case of FIG. 3, the printed circuit board 5 has gaps 7 and 6 having a predetermined width between the opposing main surface facing wall portions 22 and 23 on the both main surfaces 52 and 53 side of the substrate 5. In the form to be formed, it is held by the substrate fixing portions 15B and 25B.

  Although one embodiment of the present invention has been described above, this is merely an example, and the present invention is not limited to this, and the knowledge of those skilled in the art can be used without departing from the spirit of the claims. Various modifications based on this are possible.

  In the above embodiment, as shown in FIG. 4, on the flat main surface 53 on the printed circuit board 5, the region 54 on which the contact blocking portion 14 slides and abuts is the non-placeable region of the electronic component 51 (the electronic component non-placed region). The remaining area is an area where the electronic component 51 can be placed (an area where electronic parts can be placed). In order to reduce the area of the electronic component disabling region 54 as much as possible, the embodiment shown in FIGS.

  In the embodiment shown in FIGS. 6 to 8, the cover 10 ′ is provided with a contact blocking portion 14 ′ that plays the same role as the contact blocking portion 14 of the above embodiment. However, the contact blocking portion 14 ′ extends from the inner surface of the cover 10 ′ to the inside of the case body 20, is not in contact with the printed circuit board 5 ′, and is in contact with the main surface facing wall portion 23 (surface contact). An extending portion 142 having an abutting surface 143, and a projecting contact having an abutting surface 145 projecting from the extending portion 142 toward the central portion 54 'of the printed circuit board 5' and abutting against the central portion 54 '. And a contact portion 141. In the embodiment already described, as shown in FIG. 4, the entire region extending from the central portion to the connector portion 50 side is the electronic component disposition impossible region 54, but in the embodiment shown in FIGS. 6 to 8, Since only the central portion 54 ′ is an electronic component disabling region, the dispositionable region of the electronic component 51 can be increased.

  In the embodiment shown in FIGS. 6 to 8, the cover 10 ′ is formed in the same manner as the cover 10 of the above-described embodiment except for the configuration of the contact blocking portion. Further, the printed circuit board 5 ′ is different from the above-described embodiment in the electronic component disabling region. About the case main body 20, it is the same as that of embodiment already described.

  FIG. 7 shows an assembling method of the vehicle controller 1 ′ according to the embodiment shown in FIGS. 6 to 8, and the content thereof is the same as FIG. 5 of the embodiment already described. 7, as in FIG. 5, the first step of fixing (attaching and holding) the cover 10 and the printed circuit board 5 ′, and the cover 10 to which the printed circuit board 5 ′ is fixed are connected to the opening 25 </ b> H of the case body 20. And a second step of fixing (assembling) the cover 10 to the case body 20 in this order. In the following, the assembling method of FIG. 7 will be described focusing on differences from FIG.

  In the first step (see FIG. 7A), the front end 5B1 is held by the substrate fixing portion 15B provided on the inner surface side of the main body 15 of the cover 10. At this time, the main surface 53 of the printed circuit board 5 ′ is in a state of being in contact with the contact surface 145 of the protruding contact portion 141 in the contact blocking portion 14.

  In the second step (see FIG. 7B), the inner surface of the cover 10 on which the printed circuit board 5 ′ is fixed (held) as described above is brought closer to the opening 25 </ b> H of the case body 20. When approaching, the contact surface (sliding surface) 143 of the extending portion 142 extending from the inner surface of the cover 10 in the contact blocking portion 14 is slid on the inner surface of the main surface facing wall portion 23. Then, when the engagement protrusion 21 of the case body 20 and the engagement hole 11 of the cover 10 are in the engagement state as described above, the case body 20 and the cover 10 are assembled, and the printed circuit board 5 ′ is attached. The automobile controller 1 accommodated and held inside is completed (see FIG. 7C).

  In the embodiment shown in FIGS. 6 to 8, as shown in FIG. 8, in the printed circuit board 5 ′, only the central portion 54 ′ of the back surface 53 is an electronic component non-placeable region. Unlike FIG. 4, the area continuing to the part 50 side is an area where the electronic component 51 can be arranged (an area where electronic parts can be arranged). For this reason, in the assembling method of FIG. 3 of the above-described embodiment, the contact blocking portion 14 slides on the area and hits the electronic component 51 on the area, so that this does not occur as shown in FIG. By adopting the assembly method (see FIG. 7), only the central portion 54 ′ of the printed circuit board 5 ′ can be set as an electronic component disabling region. Note that the assembling method shown in FIG. 3 may be used if the electronic component disabling region 54 is expanded so as to be the same as in FIG. 4 of the above-described embodiment.

  In the embodiment shown in FIGS. 6 to 8, the contact area on the printed circuit board 5 ′ with which the contact blocking part 14 ′ contacts is only one place in the central part of the board, but it may be provided at a plurality of places. Good.

  In the above embodiment, the contact blocking portions 14 and 14 ′ are provided integrally with the cover 10, but may be provided integrally with the case body 20. Moreover, although the number of parts increases, the cover 10 and the case main body 20 may be provided as different members. The contact blocking portion 140 shown in FIG. 9A is provided as a separate member different from the cover 10 and the case body 20, and includes at least one wall portion 23 of the main surface facing wall portions 22, 23, Intervening between the printed board 5 and the wall 23 and the electronic component 51 on the printed board 5 are prevented from contacting each other. In this case, as shown in FIG. 9B, the contact blocking portion 140 is assembled in the central opening 514 provided in the printed circuit board 5 ''. Then, as shown in FIG. 9C, when this printed circuit board 5 ″ is inserted into the case main body 20, the contact blocking portion 140 has a surface that contacts the main surface 53 of the printed circuit board 5, Physical contact between the electronic component 51 on the main surface 53 of the printed circuit board 5 and the inner surface of the main surface opposing wall portion 23 is accommodated in the case body 20 in a form having a surface that contacts the inner surface of the surface opposing wall portion 23. Disturb.

  In the above embodiment, the contact blocking portions 14, 14 ′ are printed out of the main surface opposing wall portions 22, 23 on the front and back main surfaces 52, 53 side of the printed circuit board 5, 5 ′ accommodated in the case body 20. The gap between the substrates 5 and 5 ′ is provided in the gap 6 on the smaller side, but the main surface 52 and the main surface facing wall portion 22 of the printed circuit boards 5 and 5 ′ are formed in the gap 7 on the opposite side. You may provide in the form interposed between the inner surfaces of. Further, like the contact blocking portions 14A and 14B shown in FIG. 10, the gap 7 between the main surface 52 of the printed circuit board 5 accommodated in the case main body 20 and the main surface facing wall portion 22, and the main surface of the printed circuit board 5. You may provide in both the clearance gap 6 between the back surface 53 and the main surface opposing wall part 23, respectively.

  3, 5, 7, 9, 10, and 13 are cross-sectional views taken at the same position as AA in FIG. 1.

DESCRIPTION OF SYMBOLS 1 Controller for vehicles 5 Printed circuit board 10 Cover 14 Contact prevention part (partition part)
20 Case body

Claims (6)

A printed circuit board provided with various electronic components on the main surface, a cylindrical case body having an opening for accommodating the printed circuit board, and after receiving the printed circuit board from the opening in the case body, A vehicle controller comprising: a cover fixed to the case main body so as to close the opening;
The case body has main surface facing wall portions facing the main surfaces on both the front and back main surface sides of the accommodated printed circuit board,
The printed circuit board has an electronic component non-arrangement region in which the electronic component is non-arranged on the main surface of the printed circuit board facing at least one of the main surface facing walls.
The wall portion as a contact blocking portion for preventing physical contact between the wall portion and the electronic component in the electronic component disposition area excluding the electronic component non-arrangement region on the main surface of the printed circuit board facing the wall portion And between the electronic component non-arrangement region and a partition portion that is interposed in contact with both of them ,
The cover is a resin cover made of resin, and the partition portion is integrally formed in a form extending linearly from the inner surface of the resin cover toward the center inside the case body,
The vehicle controller according to claim 1, wherein only one partition is provided on one side of the main surfaces of the printed circuit board . A printed circuit board provided with various electronic components on the main surface, a cylindrical case body having an opening for accommodating the printed circuit board, and after receiving the printed circuit board from the opening in the case body, A vehicle controller comprising: a cover fixed to the case main body so as to close the opening;
The case body has main surface facing wall portions facing the main surfaces on both the front and back main surface sides of the accommodated printed circuit board,
The printed circuit board has an electronic component non-arrangement region in which the electronic component is non-arranged on the main surface of the printed circuit board facing at least one of the main surface facing walls.
The wall portion as a contact blocking portion for preventing physical contact between the wall portion and the electronic component in the electronic component disposition area excluding the electronic component non-arrangement region on the main surface of the printed circuit board facing the wall portion And between the electronic component non-arrangement region and a partition portion that is interposed in contact with both of them ,
The cover is a resin resin cover, and the partition part is integrally formed in a form extending from the inner surface of the resin cover to the inside of the case body,
The partition portion is formed so as to extend to the center portion in the case body, and the entire extension portion to the center portion is the main surface facing wall portion that is subject to contact prevention, and the main surface. A vehicular controller that contacts both the main surface of the printed circuit board on the opposite wall side . A printed circuit board provided with various electronic components on the main surface, a cylindrical case body having an opening for accommodating the printed circuit board, and after receiving the printed circuit board from the opening in the case body, A vehicle controller comprising: a cover fixed to the case main body so as to close the opening;
The case body has main surface facing wall portions facing the main surfaces on both the front and back main surface sides of the accommodated printed circuit board,
The printed circuit board has an electronic component non-arrangement region in which the electronic component is non-arranged on the main surface of the printed circuit board facing at least one of the main surface facing walls.
The wall portion as a contact blocking portion for preventing physical contact between the wall portion and the electronic component in the electronic component disposition area excluding the electronic component non-arrangement region on the main surface of the printed circuit board facing the wall portion And between the electronic component non-arrangement region and a partition portion that is interposed in contact with both of them ,
The cover is a resin resin cover, and the partition part is integrally formed in a form extending from the inner surface of the resin cover to the inside of the case body,
The partition portion extends into the case body in a non-contact manner with respect to the printed circuit board, and protrudes from the extended portion toward the central portion of the printed circuit board and contacts the central portion. the vehicle controller and having a contact portion, a. The contact blocking portion is provided on a side of a main surface facing wall portion on both the front and back main surfaces of the printed board housed in the case main body on a side having a smaller gap between the printed board and the printed circuit board. The vehicle controller according to any one of claims 1 to 3 . It is a manufacturing method of the controller for vehicles given in any 1 paragraph of Claims 1 thru / or 4 , Comprising:
A first step of fixing the cover and the printed circuit board;
A second step of inserting the fixed cover and the printed circuit board through the opening of the case body and fixing the cover and the case body;
Manufacturing method of a controller for a vehicle, comprising in this order.   It is a manufacturing method of the controller for vehicles given in any 1 paragraph of Claims 1 thru / or 4, Comprising:
  The printed circuit board is inserted from the opening of the case body that is a single resin injection molded body, and the first step of accommodating and holding the printed circuit board in the case body;
  A second step of attaching the cover, which is a single resin injection molded body, to cover the opening of the case body in which the printed board is accommodated and held;
  In this order, a method for manufacturing a controller for a vehicle.

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