JP2013030291A - Connector holding structure, electronic apparatus, and motor controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mitigate stress transmitted to a printed circuit board when a mating connector is inserted in and removed from a connector provided on the printed circuit board.SOLUTION: A motor controller comprises a printed circuit board 5, a case 1 fixing the printed circuit board 5 via plural studs 1a while being raised from an inner bottom face 1s, and a connector 6 provided at an end 5t of the printed circuit board 5 so that insertion and removal directions U, D of a mating connector are orthogonal to the printed circuit board 5. An end 6b on a stud 1a side of the connector 6 is screwed to the printed circuit board 5. A first engagement part 6d directed to the printed circuit board 5 and a second engagement part 6e directed to the inner bottom face 1s of the case 1 are provided at an end 6c of the connector 6 opposite to the stud 1a. A third engagement part 1d directed to the inner bottom face 1s and engaged with the first engagement part 6d, and a fourth engagement part 1e directed to the printed circuit board 5 and engaged with the second engagement part 6e are provided on a side wall 1f of the case 1.

Description

  The present invention relates to a connector holding structure for holding a connector provided on a printed circuit board, an electronic device, and an electric motor control device.

  In the connector provided on the printed circuit board, a load is applied and stress is generated when the mating connector is inserted or removed. The stress is transmitted from the connector to the printed circuit board, and the printed circuit board may bend and crack, or the soldered part may peel off, resulting in damage to the printed circuit board. In addition, the electronic components mounted on the printed circuit board may be damaged.

  On the other hand, Patent Document 1 and Patent Document 2 disclose a structure that makes it difficult to transmit stress generated at the time of connector insertion / extraction to a printed circuit board.

  In Patent Document 1, a box-shaped connector housing is integrally formed on a lid body with an upper surface opening, terminals are insert-molded on a connector plug body, and a connector fixing portion is provided on the bottom surface of the case. And solder the lower part of the terminal to the printed circuit board, screw the printed circuit board and the connector plug body to the connector fixing part, attach the lid to the case, and project the upper part of the terminal to the fitting part of the connector housing I am letting. Thereby, the insertion / extraction force of the mating connector is transmitted to the lid or the case, and the generated stress is hardly transmitted to the printed board.

  In Patent Document 2, the printed circuit board is held in a state of floating from the pedestal surface via a plurality of studs, the edge of the pedestal is bent toward the printed circuit board, and the end of the printed circuit board is supported by the end surface of the edge. A connector is provided at the end of the printed circuit board opposite to the base surface. Thereby, even if the insertion force of the counterpart connector is applied to the end portion of the printed board, the printed board is prevented from being bent.

JP 2001-210433 A JP 2003-92479 A

  The subject of this invention is relieving the stress transmitted to a printed circuit board, when inserting and extracting a mating connector with respect to the connector provided in the printed circuit board.

  The connector holding structure according to the present invention includes a printed circuit board on which electronic components are mounted, a pedestal for fixing the printed circuit board in a state of being lifted from the pedestal surface via a plurality of studs, and a mating connector insertion / extraction direction with respect to the printed circuit board. And a connector provided at the end of the printed circuit board so as to be vertical. The end of the connector on the stud side is screwed to the printed circuit board. A first engagement portion facing the printed circuit board side and a second engagement portion facing the pedestal surface side are provided at the end of the connector opposite to the stud. The side wall protruding toward the printed circuit board side of the pedestal faces the pedestal surface side, the third engagement part that engages with the first engagement part, and the second engagement part faces toward the printed circuit board side. A fourth engaging portion is provided.

  The electronic device according to the present invention includes a printed circuit board on which electronic components are mounted, a case for fixing the printed circuit board in a state of being floated from the inner bottom surface via a plurality of studs, and a mating connector insertion / extraction direction on the printed circuit board. And a connector provided at an end of the printed circuit board so as to be perpendicular to the printed circuit board. The end of the connector on the stud side is screwed to the printed circuit board. A first engagement portion facing the printed circuit board side and a second engagement portion facing the inner bottom surface side of the case are provided at the end of the connector opposite to the stud. The side wall protruding toward the printed circuit board side of the case faces the inner bottom surface side, and the third engagement part engages with the first engagement part, and the second engagement part faces the printed circuit board side. A fourth engaging portion is provided.

  An electric motor control device according to the present invention includes a metal board on which power supply electronic components for switching a power supply state to the motor are mounted, a printed board on which control electronic components for controlling the power supply electronic parts are mounted, and a metal board. It has a case that is fixed to the inner bottom surface and is fixed in a state where the printed circuit board is floated from the inner bottom surface via a plurality of studs, a connection terminal that connects the metal substrate and the printed circuit board, and a terminal that supplies power to the motor. The printed circuit board has a connection member mounted on the printed circuit board and fixed to the case, and a terminal for communication with an external device, and the end of the printed circuit board is aligned so that the mating connector insertion / removal direction is perpendicular to the printed circuit board. And a connector mounted on the part. The end of the connector on the stud side is screwed to the printed circuit board. A first engagement portion facing the printed circuit board side and a second engagement portion facing the inner bottom surface side of the case are provided at the end of the connector opposite to the stud. The side wall protruding toward the printed circuit board side of the case faces the inner bottom surface side, and the third engagement part engages with the first engagement part, and the second engagement part faces the printed circuit board side. A fourth engaging portion is provided.

  With the above configuration, when the mating connector is inserted into the connector provided on the printed circuit board, the insertion force is applied to the pedestal or the case via the first engaging portion of the connector and the third engaging portion of the pedestal or case. It is accepted. For this reason, it is possible to make it difficult for stress generated when the mating connector is inserted to be transmitted from the connector to the printed circuit board. Further, when the mating connector is removed from the connector provided on the printed circuit board, the removal force is received by the pedestal or the case via the second engaging portion of the connector and the fourth engaging portion of the pedestal or case. . For this reason, the stress generated when the mating connector is removed can be made difficult to be transmitted from the connector to the printed circuit board. Therefore, it is possible to relieve stress transmitted to the printed board when the mating connector is inserted into and removed from the connector provided on the printed board.

  In the present invention, in the connector holding structure, the connector is formed in a horizontally long shape, and a screwing portion for screwing the connector to the printed circuit board, a first engagement portion, a second engagement portion, a third engagement portion, A plurality of fourth engaging portions may be provided in the lateral width direction of the connector.

  According to the present invention, when the mating connector is inserted into and removed from the connector provided on the printed circuit board, the insertion / extraction force is received by the base or the case, and the stress transmitted to the printed circuit board can be reduced.

It is an exploded view of the electric motor control apparatus by one Embodiment of this invention. It is a one part perspective view of an electric motor control device. It is a perspective view of an electric motor control device. It is a bottom view of an electric motor control device. It is a perspective view of the outer side of the case with which an electric motor control apparatus is equipped. It is a perspective view of the inner side of the case with which an electric motor control apparatus is equipped. It is a perspective view of the lower surface side of the printed circuit board with which an electric motor control apparatus is equipped. It is a perspective view of the upper surface side of the printed circuit board with which an electric motor control apparatus is equipped. It is XX sectional drawing of FIG. It is YY sectional drawing of FIG. It is principal part sectional drawing which shows other embodiment. It is principal part sectional drawing which shows other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

  An electric motor control device 100 shown in FIGS. 1, 3, and 4 is an ECU (electronic control device) used in an electric power steering system of an automobile. The motor control device 100 is an example of the “electronic device” in the present invention.

  As shown in FIG. 1, the motor control device 100 includes a case 1, a cover 2, a metal board 3, a connection member 4, a printed board 5, and a connector 6. Further, the motor control device 100 is provided with a connector holding structure to be described later for holding the connector 6.

  The upper opening of the case 1 is covered with a cover 2 as shown in FIG. The case 1 and the cover 2 are fitted together by a known lock structure (not shown). In an internal space formed by fitting the case 1 and the cover 2, the metal board 3, the printed board 5, and the connector 6 are accommodated.

  A power supply electronic component 50 such as an FET that switches a power supply state (current supply state) to an electric motor (motor) is mounted on the metal substrate 3. As shown in FIG. 6, the metal substrate 3 is fixed to the inner bottom surface 1 s of the case 1 with screws 11.

  A plurality of connection terminals 7 are mounted on the metal substrate 3. 1 and 2, the lead portion 7a of the connection terminal 7 is inserted into a through hole 5a provided in the printed circuit board 5 and soldered. Thereby, as shown in FIG. 8, the metal substrate 3 and the printed circuit board 5 are connected.

  As shown in FIG. 1 and the like, the connecting member 4 has a terminal 8 for feeding (current supply) to the motor. 1 and 2, the lead portion 8b of the terminal 8 is inserted into a through hole 5b provided in the printed circuit board 5 and soldered. Thereby, as shown in FIG. 2 and FIG. 8, the connection member 4 and the printed circuit board 5 are connected. The connection member 4 is fixed to the side surface of the case 1 with screws 12 as shown in FIGS. A terminal for connecting to the electric motor is attached to the connection portion 8a of the terminal 8 with a screw (not shown).

  On the printed circuit board 5, a control electronic component 60 such as a CPU or a memory for controlling the power supply electronic component 50 of the metal substrate 3 is mounted. Further, as shown in FIGS. 1, 2, and 7 to 10, a connector 6 is provided at the end 5 t of the printed circuit board 5.

  The connector 6 is formed in a horizontally long shape in which the horizontal width is longer than the vertical width. The connector 6 has a terminal 9 for communication with an external device such as a host control device (see FIGS. 4, 9, and 11). As shown in FIG. 3, a plurality of mating connectors (socket harnesses) 10 for connecting to an external device are respectively attached to the plurality of fitting portions 6 a of the connector 6.

  The connector 6 is mounted on the end portion 5 t of the printed circuit board 5 so that the insertion / extraction directions (vertical directions) U and D of the counterpart connector 10 are perpendicular to the printed circuit board 5. As shown in FIGS. 1, 2, 8, and 9, the lead portion 9 a of the terminal 9 is inserted into a through hole 5 c provided in the printed circuit board 5 and soldered.

  As shown in FIGS. 1 and 6, a plurality (four) of studs 1 a are provided inside the case 1. The stud 1a includes a column portion 1b formed integrally with the case 1, and a screw hole 1c drilled in the column portion 1b.

  As shown in FIG. 2, the printed circuit board 5 is placed on the stud 1a, the screw 13 is passed through the printed circuit board 5, and is screwed into the screw hole 1c of each stud 1a. Thereby, the printed circuit board 5 is fixed to the case 1. That is, the case 1 is fixed in a state where the printed circuit board 5 is levitated from the inner bottom surface 1s via the plurality of studs 1a. Case 1 is an example of the “pedestal” of the present invention. The inner bottom surface 1s of the case 1 is an example of a pedestal surface of the present invention.

  As shown in FIGS. 3 and 4, the fitting portion 6 a of the connector 6 is exposed from the opening 1 k formed in the bottom of the case 1. As shown in FIG. 2, both end portions 6 b on the side of the stud 1 a in the lateral width direction of the connector 6 are screwing portions 6 b for screwing the connector 6 to the printed circuit board 5. That is, a plurality of screwing portions 6 b are provided in the lateral width direction of the connector 6. Each screwing part 6b is being fixed to the printed circuit board 5 with the screw 14 (refer also FIG. 1 and FIGS. 7-9).

  As shown in FIG. 1 and FIGS. 7 to 10, a first engagement portion 6 d and a second engagement portion 6 e are provided at the end 6 c of the connector 6 opposite to the stud 1 a. As shown in FIG. 9, the first engaging portion 6 d is composed of a surface facing the printed circuit board 5 side. As shown in FIGS. 9 and 10, the second engaging portion 6 e is formed of a surface facing the inner bottom surface 1 s side (the side opposite to the printed circuit board 5) of the case 1.

  As shown in FIGS. 5, 6, 9, and 10, the side wall 1 f of the case 1 that protrudes toward the printed circuit board 5 side of the case 1 has a third engaging portion 1 d and a fourth engaging portion 1 e. Is provided. As shown in FIG. 9, the third engagement portion 1 d includes a surface facing the inner bottom surface 1 s side of the case 1. The first engagement portion 6d of the connector 6 is engaged with the third engagement portion 1d. As shown in FIG. 10, the fourth engaging portion 1e is formed of a surface facing the printed circuit board 5 side. The second engagement portion 6e of the connector 6 is engaged with the fourth engagement portion 1e.

  As shown in FIGS. 1 and 5 to 8, the first engaging portion 6 d and the second engaging portion 6 e of the connector 6, and the third engaging portion 1 d and the fourth engaging portion 1 e of the case 1 are A plurality of connectors 6 are provided in the lateral width direction. Specifically, the first engaging portion 6d and the third engaging portion 1d are provided three by three at a predetermined interval in the lateral width direction of the connector 6. Four second engaging portions 6e and four fourth engaging portions 1e are provided at predetermined intervals in the lateral width direction of the connector 6.

  According to the above embodiment, when the mating connector 10 is inserted into the connector 6, the insertion force (the force acting in the U direction in FIG. 9) is the first engaging portion 6d of the connector 6 and the third engaging portion 1d of the case 1. And is received by the case 1. For this reason, it is possible to make it difficult for stress generated when the mating connector 10 is inserted to be transmitted from the connector 6 to the printed circuit board 5. Further, when the mating connector 10 is removed from the connector 6, the removal force (force acting in the direction D in FIG. 9) is transmitted via the second engagement portion 6e of the connector 6 and the fourth engagement portion 1e of the case 1. It can be received in Case 1. For this reason, it is possible to make it difficult for stress generated when the mating connector 10 is removed to be transmitted from the connector 6 to the printed circuit board 5. Therefore, when the mating connector 10 is inserted into and removed from the connector 6 provided on the printed circuit board 5, the stress transmitted to the printed circuit board 5 can be reduced.

  In this embodiment, a plurality of screwing portions 6 b and engaging portions 6 d and 6 e of the connector 6 and engaging portions 1 d and 1 e of the case 1 are provided in the lateral width direction of the connector 6. For this reason, the horizontally long connector 6 can be stably held by the printed circuit board 5 and the case 1. In addition, when the mating connector 10 is inserted into and removed from the connector 6, even if a force is applied unevenly in the lateral width direction of the connector 6, the force transmitted to the printed circuit board 5 is received by the case 1. Is possible.

  The present invention can employ various embodiments other than those described above. For example, in the above-described embodiment, an example in which the connector 6 is arranged on the case 1 side of the printed circuit board 5 is shown, but the present invention is not limited to this. For example, as shown in FIG. 11, the connector 6 ′ may be disposed on the cover 2 side of the printed circuit board 5. In this case, for example, as shown in FIGS. 11 and 12, the end 6c ′ of the connector 6 ′ is extended toward the case 1, and the first engaging portion 6d ′ and the second engaging portion 6e are connected to the end 6c ′. 'And provide. Then, the first engaging portion 6d 'and the second engaging portion 6e' may be engaged with the third engaging portion 1d and the fourth engaging portion 1e of the case 1, respectively.

  Moreover, although the example which provided the some stud 1a integrally with the case 1 was shown in the said embodiment, this invention is not limited to this. In addition to this, a plurality of studs may be formed separately from the case and attached to the inner bottom surface of the case.

  Moreover, although the example which provided the stud 1a, the 3rd engaging part 1d, and the 4th engaging part 1e in the case 1 was shown in the said embodiment, this invention is not limited to this. In addition to this, for example, a pedestal separate from the case may be provided, a plurality of studs may be provided on the pedestal surface, and a third engagement portion and a fourth engagement portion may be provided on the side wall of the pedestal. Then, the printed board may be fixed to the pedestal via the stud, and the connector provided at the end of the printed board may be held by the printed board and the pedestal.

  Furthermore, although the example which applied this invention to the electric motor control apparatus 100 used with a power steering system was given in the said embodiment, it is possible to apply this invention also to other electronic devices.

DESCRIPTION OF SYMBOLS 1 Case 1a Stud 1d 3rd engaging part 1e 4th engaging part 1s Inner bottom face 1f Side wall 3 Metal substrate 4 Connection member 5 Printed circuit board 5t Printed circuit board end 6, 6 'Connector 6b End of the connector on the stud side ( Screw fixing part)
6c, 6c Ends 6d, 6d 'of the connector opposite to the studs 6d, 6d' First engaging part 6e, 6e 'Second engaging part 7 Connection terminal 8 Power supply terminal 9 Communication terminal 10 Counterpart connector 14 Screw 50 Power supply Electronic parts 60 Control electronic parts 100 Motor controller U, D Insertion / extraction direction

Claims (4)

A printed circuit board on which electronic components are mounted;
A pedestal for fixing the printed circuit board in a state of being levitated from the pedestal surface via a plurality of studs;
A connector holding structure provided with a connector provided at an end of the printed circuit board so that the insertion / extraction direction of the mating connector is perpendicular to the printed circuit board,
Screw the end of the connector on the stud side to the printed circuit board,
A first engagement portion facing the printed circuit board side and a second engagement portion facing the pedestal surface side are provided at an end of the connector opposite to the stud,
A side wall of the pedestal that protrudes toward the printed circuit board side is directed to the pedestal surface side, the third engagement part is engaged with the first engagement part, and the second engagement is directed to the printed circuit board side. A connector holding structure, comprising: a fourth engaging portion with which a joint portion engages. The connector holding structure according to claim 1,
The connector is formed in a horizontally long shape,
A screw width portion for screwing the connector to the printed circuit board, the first engagement portion, the second engagement portion, the third engagement portion, and the fourth engagement portion are arranged in a lateral width of the connector. A connector holding structure characterized by being provided in a plurality in the direction. A printed circuit board mounted with electronic components,
A case for fixing the printed circuit board in a state of being levitated from the inner bottom surface via a plurality of studs,
In an electronic device comprising: a connector provided at an end of the printed circuit board so that a mating connector insertion / extraction direction is perpendicular to the printed circuit board,
Screw the end of the connector on the stud side to the printed circuit board,
A first engagement portion facing the printed circuit board side and a second engagement portion facing the inner bottom surface side of the case are provided at the end of the connector opposite to the stud,
A side wall of the case that protrudes toward the printed circuit board side faces the inner bottom surface side, a third engagement part that engages with the first engagement part, and a direction that faces the printed circuit board side, and the second engagement. An electronic apparatus comprising a fourth engaging portion with which a joint portion engages. A metal substrate on which power supply electronic components for switching the power supply state to the electric motor are mounted;
A printed circuit board on which a control electronic component that controls the power supply electronic component is mounted;
A case for fixing the metal substrate to the inner bottom surface, and fixing the printed circuit board in a state of being levitated from the inner bottom surface via a plurality of studs,
A connection terminal for connecting the metal substrate and the printed circuit board;
A terminal for power feeding to the motor, connected to the printed circuit board and fixed to the case;
In a motor control device comprising: a terminal having a terminal for communication with an external device; and a connector mounted on an end of the printed circuit board so that a mating connector insertion / extraction direction is perpendicular to the printed circuit board ,
Screw the end of the connector on the stud side to the printed circuit board,
A first engagement portion facing the printed circuit board side and a second engagement portion facing the inner bottom surface side of the case are provided at the end of the connector opposite to the stud,
A side wall of the case that protrudes toward the printed circuit board side faces the inner bottom surface side, a third engagement part that engages with the first engagement part, and a direction that faces the printed circuit board side, and the second engagement. An electric motor control device, comprising: a fourth engaging portion with which a joint portion engages.

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