CN216488825U

CN216488825U - Electric control unit and electric connector thereof

Info

Publication number: CN216488825U
Application number: CN202123453061.8U
Authority: CN
Inventors: 顾宇轩; 刘晓倩
Original assignee: Bosch Automotive Products Suzhou Co Ltd
Current assignee: Bosch Automotive Products Suzhou Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-10
Anticipated expiration: 2031-12-31

Abstract

The application provides an electric control unit and an electric connector thereof. The insulating body comprises a socket and a mounting surface. Two guide posts are arranged on the mounting surface and spaced from each other, and each guide post comprises at least two positioning bars and at least two interference bars. Each of the positioning bars extends in a direction perpendicular to the mounting surface. The radial dimension of the interference bars is greater than the radial dimension of the positioning bars. The height position of each interference strip is lower than that of the positioning strip from the direction of the mounting surface to the printed circuit board. The structure is easy to manufacture, the electric connector can be mounted on the printed circuit board by adopting the same process as the traditional process, the manufacturing cost of the electric control unit is low, and the performance of preventing vibration interference is good.

Description

Electric control unit and electric connector thereof

Technical Field

The present disclosure relates to electronic devices, and more particularly, to an electronic control unit and an electrical connector thereof. The electric control unit comprises a circuit board and an electric connector arranged on the circuit board.

Background

An inertia sensor is mounted on a printed circuit board of an airbag electronic control unit, and the sensor detects the change of inertia in real time, so that the inertia sensor can sense the change of inertia in time when a vehicle collides. The sensor is very sensitive to collision, and sometimes, two mechanical parts close to each other in the electronic control unit collide with each other at a resonance frequency to possibly cause signal interference inside the sensor, so that misjudgment of the electronic control unit is caused.

SUMMERY OF THE UTILITY MODEL

The technical problem that misjudgment is caused by collision between parts of an electric control unit in the prior art is mainly solved.

In order to solve the above technical problem, the present application provides an electrical connector, which includes an insulating body and a plurality of conductive terminals fixed to the insulating body. The insulating body comprises a plug interface and an installation surface, the plug interface is used for being plugged with a matched connector along a plugging direction, the installation surface is used for being matched with a printed circuit board, two guide columns which are spaced from each other are arranged on the installation surface, each guide column comprises at least two positioning strips and at least two interference strips, each positioning strip extends along a direction perpendicular to the installation surface, the radial dimension of each interference strip is larger than that of each positioning strip, and the height position of each interference strip is lower than that of each positioning strip when the installation surface faces the printed circuit board. Each conductive terminal comprises a plug-in part and a connecting part, the plug-in part extends into the plug-in port from the insulating body, and the connecting part penetrates through the mounting surface from the insulating body.

In some embodiments, the insulation body includes a base body and a guide plate detachably assembled to the base body, and the connection portion penetrates the guide plate in a direction perpendicular to the mounting surface and extends beyond the mounting surface.

In some embodiments, the bottom surface of the guide plate is provided with a position stopping table, the installation surface is oriented towards the printed circuit board, the position stopping table is higher than the guide plate at the position of the connecting part, the guide post is arranged on the position stopping table, the position stopping table is provided with a chip groove, the chip groove is recessed from the top surface of the position stopping table and radially outwards penetrates through the position stopping table from the root of the interference strip, in the circumferential direction of the guide post, the width of the chip groove is greater than that of the interference strip, and the width of the chip groove does not exceed that of the positioning strip.

In some embodiments, a leading portion is disposed at a top end of each of the guiding columns, a radial dimension of the leading portion is smaller closer to a distal end, the positioning strip has an arc surface for fitting with a through hole of a printed circuit board, the positioning strip is higher than the connecting portion, the interference strip is not higher than the connecting portion, and a circumferential dimension of the interference strip is smaller than a circumferential dimension of the positioning strip.

In some embodiments, the guide plate is elongated, two of the guide posts are respectively disposed at two longitudinal ends of the guide plate, a first of the two guide posts is provided with three of the interference strips, and a second of the two guide posts is provided with two of the interference strips.

In some embodiments, three of the interference strips of the first guiding column are uniformly distributed along the circumferential direction of the guiding column, two of the interference strips of the second guiding column are symmetrically distributed, and the symmetry axes of the two interference strips are parallel to the longitudinal direction.

In some embodiments, the insertion direction of the insertion interface is parallel to the mounting surface, the conductive terminal is long, the insertion portion and the connection portion are respectively located at two ends of the conductive terminal, the connection portion and the guide post are located at different positions in the insertion direction, the connection portion has a press-fit portion, and the press-fit portion has radial elasticity.

On the other hand this application provides the electrical control unit, it includes printed circuit board and aforementioned electric connector, wherein printed circuit board sets up bullport and terminal hole, the guide post inserts in the bullport, the locating strip with bullport clearance fit, the interference strip with bullport interference fit, every conductive terminal the connecting portion insert one with interference fit's mode thereby in the terminal hole with the terminal hole realizes the electricity and is connected.

In some embodiments, the front portion of the insulative body is lower than the printed circuit board.

In some embodiments, the printed circuit board has an airbag control module and an inertial sensor mounted thereon.

According to the technical scheme of this application, because electric connector's guide post still sets up the interference strip on the basis of location strip, the structure ingenious combination of location strip and interference strip, consequently, the guide post can not only play the positioning action at the in-process of installation electric connector to printed circuit board, can realize the interference fit of guide post and printed circuit board bullport moreover under the prerequisite of successful location. The structure is easy to manufacture, the electric connector can be mounted on the printed circuit board by adopting the same process as the traditional process, the manufacturing cost of the electric control unit is low, and the performance of preventing vibration interference is good.

Drawings

Specific embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 shows a schematic diagram of an electrical connector of an electronic control unit according to one embodiment;

FIG. 2 is a schematic diagram of an embodiment of an electrical connector of an electronic control unit mounted to a printed circuit board;

fig. 3 is a partially enlarged view of the guiding post of the electrical connector shown in fig. 2;

fig. 4 shows a schematic view of a guiding plate of the electrical connector shown in fig. 1;

FIG. 5 is an enlarged partial view of the right guide post of the electrical connector of FIG. 1;

fig. 6 is a partially enlarged view of the left guiding post of the electrical connector shown in fig. 1.

Detailed Description

Referring to fig. 1 to 6, an electronic control unit 200 according to an embodiment of the present application includes a printed circuit board 4. For example, the electronic control unit 200 for controlling the airbag of the vehicle mounts an airbag control module and an inertial sensor (not shown) on the printed circuit board 4. The inertial sensor can sense the motion change of the inertial sensor, and when abnormal motion is sensed, such as vehicle collision, corresponding action is triggered, such as air bag detonation is carried out to protect the safety of drivers and passengers. Thus, the electronic control unit 200 is sensitive to vibrations. If the printed circuit board 4 collides with other components, the sensing function of the inertial sensor to normal movement may be disturbed, and even an abnormal signal may be caused.

An electrical connector 100 is mounted on the edge of the printed circuit board 4. The electrical connector 100 includes a housing 1 and a plurality of conductive terminals 5 mounted on the housing 1. The insulating body 1 comprises a socket 20 and a mounting surface 30, the socket 20 is used for being plugged with a matched connector along a plugging direction, and the mounting surface 30 is used for being matched with the printed circuit board 4. The mating direction of the mating interface 20 is parallel to the mounting surface 30. The front of the electrical connector 100 of this arrangement is not supported by the printed circuit board 4 but is suspended with respect to the printed circuit board 4. The front of the insulating body 1 is lower than the printed circuit board 4. The electronic control unit 200 is compact and has a low overall profile.

In some embodiments, the insulating body 1 comprises a base body 2 and a guiding plate 3. The guide plate 3 is detachably assembled to the base body 2. For example, the guide plate 3 is provided with locking bodies 31 having elastic arms at both ends in the longitudinal direction. The snap body 31 cooperates with the snap groove 22 in the base body 2. When assembled, the locking body 31 is locked in the locking groove 22, and the guide plate 3 is fixed to the base body 2 in a locked manner. The connection portion 52 of the conductive terminal 5 penetrates the guide plate 3 in a direction perpendicular to the mounting surface 30 and extends beyond the mounting surface 30. The guide plate 3 is provided with two guide posts 32 spaced apart from each other on the mounting surface 30. For example, the guide plate 3 is provided with a stopper 35 on the bottom surface thereof. The guide post 32 is disposed on the stop table 35.

The conductive terminals 5 are fixed to the housing 1, each conductive terminal 5 includes a plug portion 50 and a connecting portion 52, the plug portion 50 extends from the housing 1 to the plug port 20, and the connecting portion 52 passes through the mounting surface 30 from the housing 1. The conductive terminal 5 is long, and the insertion portion 50 and the connection portion 52 are respectively located at two ends of the conductive terminal 5. The connecting portion 52 has a crimping portion 54, and the crimping portion 54 has radial elasticity.

The guide plate 3 is elongated, and the two guide posts 32 are respectively provided at both longitudinal ends of the guide plate 3. The guide plate 3 has a rectangular planar shape on the bottom surface thereof. The connection portion 52 extends from the bottom surface of the planar shape. The guide plates 3 near both ends of the rectangular plane are provided with respective projecting portions from the rectangular portion toward the side away from the socket 20, and the projecting portions are provided with stopper bases 35 projecting toward the printed circuit board 4. That is, the connecting portion 52 and the guide post 32 are located at different positions in the plugging direction, and the stop 35 is located higher than the guide plate 3 where the connecting portion 52 is located, on the bottom surface of the guide plate 3, from the mounting surface 30 toward the printed circuit board 4 (i.e., upward as viewed in fig. 2).

The stop 35 is provided with a chip pocket 350, the chip pocket 350 being recessed from the top surface of the stop 35. That is, the chip groove 350 is spaced apart from the printed circuit board 4 with the top surface of the stopper 35 engaged with the printed circuit board 4. A chip flute 350 extends radially outwardly from the root of the interference bar 36 through the stop 35. In the circumferential direction of the guide post 32, the width of the chip groove 350 is larger than the width of the interference strip 36, and the width of the chip groove 350 does not exceed the width of the positioning strip 34. That is, the chip flutes 350 are sufficiently wide, but not wider at circumferential locations than the circumferential locations of the positioning strips 34.

Each guide post 32 includes at least two positioning bars 34 and at least two interference bars 36. Each positioning bar 34 extends in a direction perpendicular to the mounting surface 30, and the radial dimension of the interference bars 36 is greater than the radial dimension of the positioning bars 34. The height of each interference strip 36, measured from the mounting surface 30 toward the printed circuit board 4, is lower than the height of the positioning strip 34.

The first of the two guide posts 32 is provided with three interference bars 36 and the second guide post 32 is provided with two interference bars 36. For example, the three interference bars 36 of the first guiding post 32 are uniformly distributed along the circumference of the guiding post 32, and the two interference bars 36 of the second guiding post 32 are symmetrically distributed, and the symmetry axes of the two interference bars 36 are parallel to the longitudinal direction. In some embodiments, a leading portion 38 is disposed at the tip of each guide post 32, and the radial dimension of the leading portion 38 decreases closer to the tip. That is, the tip of the guide portion 38 is smallest, facilitating easy access to the through hole of the printed circuit board 4. The positioning strip 34 engages the guide 38. The positioning strip 34 has an arc surface for fitting with a through hole of the printed circuit board 4, facilitating accurate positioning. The positioning bar 34 is higher than the connection portion 52 and the interference bar 36 is not higher than the connection portion 52 (for example, the interference bar 36 is lower than the connection portion 52) from the mounting surface 30 toward the printed circuit board 4. The circumferential dimension of the interference bars 36 is smaller than the circumferential dimension of the positioning bars 34.

The printed circuit board 4 is provided with a guide hole and a terminal hole. The head of the guide 38 is much smaller than the guide hole. In the process of mounting the electrical connector 100, the guide hole can be easily found first through the guide portion 38. The guide post 32 is easily inserted into the guide hole under the guidance of the guide portion 38. The locating bar 34 is then clearance fitted with the guide bore. Each conductive terminal 5 is accurately aligned with the corresponding terminal hole by the positioning action of the positioning strip 34. When the terminal is further inserted, each conductive terminal 5 enters the terminal hole, then the interference strip 36 is in interference fit with the guide hole, and meanwhile, the connecting portion 52 of each conductive terminal 5 is inserted into one terminal hole in an interference fit manner so as to be electrically connected with the terminal hole. During interference of the interference bar 36 with the guide hole of the printed circuit board 4, if debris is generated, the debris will enter the chip groove 350 without affecting the fit of the stop 35 with the printed circuit board 4. Because the interference strip 36 is arranged on the basis of the positioning strip 34 of the guiding column 32 of the electrical connector 100, and the positioning strip 34 and the interference strip 36 are skillfully combined, the guiding column 32 not only can play a positioning role in the process of mounting the electrical connector 100 to the printed circuit board 4, but also can realize the interference fit of the guiding column 32 and the guiding hole of the printed circuit board 4 on the premise of successful positioning. This structure is not only easy to manufacture itself, but also enables the electrical connector 100 to be mounted on the printed circuit board 4 by the same process as the conventional process, and the electronic control unit 200 is low in manufacturing cost and excellent in vibration interference prevention performance.

Notwithstanding the foregoing, the scope of protection of the present application is defined by the claims.

Description of the reference numerals

Electronic control unit 200

Electrical connector 100

Insulating body 1

Base body 2

Interface 20

Snap groove 22

Guide plate 3

Mounting face 30

Fastener 31

Guide post 32

Positioning strip 34

Stop table 35

Chip pocket 350

Interference strip 36

Guide part 38

Printed circuit board 4

Conductive terminal 5

Plug-in part 50

Connecting part 52

Crimping part 54

Claims

1. An electrical connector, characterized in that it comprises:

the insulating body (1) comprises a plug interface (20) and a mounting surface (30), wherein the plug interface (20) is used for being plugged with a matched connector along a plugging direction, the mounting surface (30) is used for being matched with a printed circuit board (4), two guide columns (32) which are spaced from each other are arranged on the mounting surface (30), each guide column (32) comprises at least two positioning strips (34) and at least two interference strips (36), each positioning strip (34) extends along a direction perpendicular to the mounting surface (30), the radial dimension of each interference strip (36) is larger than that of each positioning strip (34), and the height position of each interference strip (36) is lower than that of each positioning strip (34) when the mounting surface (30) faces the direction of the printed circuit board (4);

the conductive terminals (5) are fixed on the insulating body (1), each conductive terminal (5) comprises a plug-in part (50) and a connecting part (52), the plug-in parts (50) extend from the insulating body (1) to the plug-in port (20), and the connecting parts (52) penetrate through the mounting surface (30) from the insulating body (1).

2. The electrical connector according to claim 1, wherein the insulating body (1) includes a base body (2) and a guide plate (3), the guide plate (3) is detachably assembled to the base body (2), and the connecting portion (52) penetrates the guide plate (3) in a direction perpendicular to the mounting surface (30) and extends beyond the mounting surface (30).

3. The electrical connector according to claim 2, wherein a stop table (35) is arranged on the bottom surface of the guide plate (3), the stop table (35) is higher than the guide plate (3) at the position of the connecting portion (52) from the mounting surface (30) to the printed circuit board (4), the guide post (32) is arranged on the stop table (35), the stop table (35) is provided with a chip groove (350), the chip groove (350) is recessed from the top surface of the stop table (35) and penetrates through the stop table (35) from the root of the interference strip (36) radially outwards, the width of the chip groove (350) is larger than that of the interference strip (36) in the circumferential direction of the guide post (32), and the width of the chip groove (350) does not exceed that of the positioning strip (34).

4. The electrical connector of claim 1, wherein a leading portion (38) is disposed at a top end of each of the guiding posts (32), a radial dimension of the leading portion (38) is smaller toward a distal end, the positioning bar (34) has an arc surface for fitting into a through hole of a printed circuit board (4), the positioning bar (34) is higher than the connecting portion (52) in a direction from the mounting surface (30) toward the printed circuit board (4), the interference bar (36) is not higher than the connecting portion (52), and a circumferential dimension of the interference bar (36) is smaller than a circumferential dimension of the positioning bar (34).

5. The electrical connector according to claim 2, wherein the guide plate (3) is elongated, two of the guide posts (32) are respectively disposed at both longitudinal end portions of the guide plate (3), a first of the two guide posts (32) is provided with three of the interference strips (36), and a second of the two guide posts (32) is provided with two of the interference strips (36).

6. The electrical connector of claim 5, wherein the three interference strips (36) of the first guiding stud (32) are uniformly distributed along the circumference of the guiding stud (32), and the two interference strips (36) of the second guiding stud (32) are symmetrically distributed, the symmetry axes of the two interference strips (36) being parallel to the longitudinal direction.

7. The electrical connector of claim 1, wherein the mating direction of the mating interface (20) is parallel to the mounting surface (30), the conductive terminal (5) is elongated, the mating portion (50) and the connecting portion (52) are respectively located at two ends of the conductive terminal (5), the connecting portion (52) and the guiding post (32) are located at different positions in the mating direction, the connecting portion (52) has a press-fit portion (54), and the press-fit portion (54) has radial elasticity.

8. Electronic control unit, characterized in that it comprises a printed circuit board (4) and an electrical connector according to any one of claims 1 to 7, wherein the printed circuit board (4) is provided with a guide hole and a terminal hole, the guide pillar (32) is inserted into the guide hole, the positioning strip (34) is in clearance fit with the guide hole, the interference strip (36) is in interference fit with the guide hole, and the connecting portion (52) of each conductive terminal (5) is inserted into one of the terminal holes in interference fit manner so as to be electrically connected with the terminal hole.

9. The electronic control unit according to claim 8, characterized in that the front part of the insulating body (1) is lower than the printed circuit board (4).

10. The electronic control unit according to claim 8, characterized in that the printed circuit board (4) has mounted thereon an airbag control module and an inertial sensor.