Electronic device and airbag electronic control unit

Abstract

The utility model provides an electronic device, comprising a connecting plug which comprises a first side provided with a frame opening and a second side opposite to the first side; the plurality of contact pins are inserted into the connecting plug in parallel, and each contact pin comprises a first end extending from the first side of the connecting plug through the frame opening, a press-fit terminal extending from the second side of the connecting plug, and a connecting part connecting the first end and the press-fit terminal; the printed circuit board is provided with a plurality of conductive jacks, one end of each jack is provided with an orifice chamfer, the press-fit terminal of the pin is inserted into the corresponding jack on the printed circuit board through the orifice chamfer, the press-fit terminal is in interference fit with the jack, and the press-fit terminal is formed by stamping a metal plate with the thickness not exceeding 0.5 mm. The electronic device may be configured as an airbag electronic control unit. According to the electronic device, the requirement for the position degree of the contact pin press-fit terminal is lowered, the failure rate in the assembly process of the contact pin press-fit terminal and the printed circuit board is lowered, and the development cost and the manufacturing cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electronic device and an airbag electronic control unit. BACKGROUND

[0002] In an electronic device having a plug connector with a plurality of pins inserted into the plug connector and a printed circuit board, two conventional connection methods between the pins and the printed circuit board receptacles are soldering and press-fit.

[0003] In the soldering connection method, since the pin insertion end is smaller than the hole diameter of the printed circuit board receptacle, the position requirement of the pin is not very strict during the assembly of the plug connector and the printed circuit board. However, the soldering connection method has many disadvantages such as poor connection strength, easy oxidation, short service life, environmental unfriendliness, complex process, and difficult process control.

[0004] The press-fit connection method has high connection strength, long service life, and environmental friendliness. It only needs a simple press-fit action to achieve quick and reliable connection between the pin and the printed circuit board, and is particularly suitable for vibration-resistant and impact-resistant application occasions, such as an airbag electronic control unit installed in a vehicle and used when the vehicle is subjected to a severe collision.

[0005] However, in the press-fit connection method, since the connection between the pin press-fit terminal and the printed circuit board receptacle is achieved by interference fit, the position of the press-fit terminal is very important during the assembly of the plug connector and the printed circuit board. Currently, the requirement for the position of the press-fit terminal is very high, especially for small-sized press-fit terminals such as 0.4x0.5mm press-fit terminals, which require a lot of development cost and manufacturing cost to meet the requirements.

[0006] Therefore, how to meet the position requirement of the pin press-fit terminal while reducing the development cost and manufacturing cost and reducing the failure rate during the assembly of the pin and the printed circuit board receptacle has become a problem to be solved in the industry. SUMMARY

[0007] The utility model aims to solve the above problems existing in the prior art.

[0008] To this end, according to one aspect of the present utility model, provide a kind of electronic device, comprising: plug, it includes the first side with frame mouth and the second side opposite to the first side;Multiple pins, it is parallelly arranged and inserted in the plug, each pin includes the first end that extends from the first side of the plug via the frame mouth, the press-fit terminal that extends from the second side of the plug and the connecting portion connecting the first end and the press-fit terminal;And printed circuit board, the printed circuit board is provided with multiple conductive jacks, one end of each jack is provided with hole chamfer, wherein the press-fit terminal of the pin is inserted into the corresponding jack on the printed circuit board via the hole chamfer, the press-fit terminal is interference fit with the jack, and the press-fit terminal is formed by stamping from metal plate with thickness not more than 0.5mm.

[0009] According to one embodiment of the present utility model, the press-fit terminal has a press-fit portion interference fit with the jack on the printed circuit board and a shoulder portion connected between the press-fit portion and the connecting portion, the shoulder portion has a shoulder portion head portion transversely widened from the front end of the connecting portion and a shoulder portion neck portion, the shoulder portion head portion width W3 of the shoulder portion is greater than the shoulder portion neck portion width W4 of the shoulder portion, the press-fit portion thickness T2 of the press-fit portion is greater than the connecting portion thickness T1 of the connecting portion of the press-fit terminal, wherein the press-fit portion thickness T2 is not less than 0.5mm, and the connecting portion thickness T1 of the connecting portion is not more than 0.4mm.

[0010] According to one embodiment of the present utility model, the press-fit portion of the press-fit terminal is a portion that can be elastically deformed, when the press-fit terminal is inserted into the jack of the printed circuit board, two side walls of the press-fit portion are elastically deformed by being extruded by the jack wall, so that the interference fit is formed between the press-fit portion and the jack, and the press-fit terminal also has a pin portion located at the front end of the press-fit portion, the pin portion has a sharp end for inserting into the jack on the printed circuit board.

[0011] According to one embodiment of the present utility model, each side wall has a middle plane parallel to the longitudinal direction of the press-fit terminal, and two inclined planes, one of the two inclined planes is inclined forward from the front end of the middle plane to narrow the pin portion of the press-fit terminal, and the other of the two inclined planes is inclined backward from the rear end of the middle plane to narrow the shoulder portion of the press-fit terminal.

[0012] According to one embodiment of the utility model, the electronic device further includes a guide plate, the guide plate is arranged on the side of the printed circuit board facing the insertion of the press-fit terminal, the guide plate is rectangular and is provided with an attachment part at each end in the length direction, the two ends of the second side of the plug connector are provided with two lateral walls, the two lateral walls are respectively provided with a receiving part, the attachment part of the two ends of the guide plate is connected to the receiving part on the two lateral walls of the plug connector, so that the guide plate is connected to the plug connector, the guide plate includes a first side, a second side opposite to the first side and a plurality of sunken holes extending from the first side to the second side, the bottom of each sunken hole has a hole bottom surface, the hole bottom surface partially closes the sunken hole, so that each sunken hole has a through hole in the shape of a semi-circle.

[0013] According to one embodiment of the utility model, when the press-fit part of the press-fit terminal is inserted into the jack of the printed circuit board through the through hole of the sunken hole of the guide plate to the appropriate position, a part of the head of the shoulder part of the press-fit terminal enters the sunken hole of the guide plate, and a part of the lower side bottom surface of the neck part of the shoulder part abuts against the hole bottom surface of the sunken hole, the part of the press-fit terminal passing through the through hole and the through hole form a clearance fit.

[0014] According to one embodiment of the utility model, the electronic device further includes a bottom plate and a shell, the bottom plate includes a boss, the boss is surrounded in a closed shape to define an internal area inside the boss and an external area outside the boss, the boss protrudes from the internal area and the external area, the internal area is provided with a plurality of bolt holes, the external area is provided with a plurality of mounting holes for mounting the electronic device, the shell has a top wall, a left side wall, a right side wall and a back side wall, the top wall, the left side wall and the right side wall surround an opening facing the front side of the shell for the plug connector to be inserted, the printed circuit board is connected to the second side of the plug connector and is provided with a plurality of through holes corresponding to the positions of the plurality of bolt holes of the bottom plate, and the shell is provided with a plurality of nuts corresponding to the positions of the plurality of bolt holes of the bottom plate, the plurality of nuts are respectively embedded in a plurality of protruding columns of the shell, the bottom plate, the printed circuit board and the shell are connected together by a plurality of bolts passing through the plurality of bolt holes, the plurality of through holes and being received by the plurality of nuts, thereby assembling the printed circuit board in place between the boss of the bottom plate and the protruding column of the shell, the left side wall, the right side wall and the back side wall of the shell surround the outside of the boss of the bottom plate.

[0015] According to one embodiment of the utility model, the number of press-fit terminals and the number of corresponding jacks on the printed circuit board are at least 50 respectively, the press-fit terminal is formed by stamping a metal plate with a thickness not more than 0.4mm, and the minimum width W1 of the connecting part is not more than 0.6mm.

[0016] According to one embodiment of the present application, the press-fit terminal of the pin extending from the second side of the connector is inserted into the jack on the printed circuit board after the connection portion is bent, and the press-fit terminal is perpendicular to the first end of the pin after the connection portion is bent.

[0017] According to one embodiment of the present application, the electronic device described above is configured as an airbag electronic control unit.

[0018] The device according to certain embodiments of the present application reduces the requirement for position degree of the press-fit terminal of the pin, reduces the failure rate in the assembly process of the press-fit terminal of the pin and the printed circuit board, and reduces the development cost and manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other features and advantages of the present application will be better understood from the following detailed description of the application taken in conjunction with the drawings, in which:

[0020] Figure 1 A perspective view of an electronic device according to one embodiment of the present application is shown;

[0021] Figure 2 A top view of an electronic device according to one embodiment of the present application is shown, showing the connector with the pin inserted, the guide plate, the printed circuit board and the bottom plate after assembly;

[0022] Figure 3 A perspective view of the press-fit terminal of the pin and the jack of the printed circuit board before assembly according to one embodiment of the present application is shown;

[0023] Figure 4 A cross-sectional view of the press-fit terminal of the pin and the jack of the printed circuit board before assembly according to one embodiment of the present application is shown;

[0024] Figure 5 And Figure 6 Schematic diagrams of two sides of a guide plate according to one embodiment of the present application are shown respectively;

[0025] Figure 7 A schematic diagram of the press-fit terminal of the pin, the guide plate and the printed circuit board after assembly according to one embodiment of the present application is shown;

[0026] Figure 8 An exploded view of an electronic device according to one embodiment of the present application is shown;

[0027] Figure 9 A perspective view of an electronic device according to one embodiment of the present application is shown;

[0028] Figure 10 A front view of the press-fit terminal of one embodiment of the present application is shown.

[0029] Figure 11 A side view of the press-fit terminal of one embodiment of the present application is shown. DETAILED DESCRIPTION

[0030] An electronic device according to one embodiment of the present application will be described below with reference to the drawings.

[0031] Please refer to Figures 1 to 11 , the electronic device of one embodiment of the present application includes a connector 1, a plurality of pins 2 inserted into the connector 1, and a printed circuit board 3 connected to the connector 1. The connector 1 includes a first side 11 provided with a frame opening 13 and a second side 12 opposite to the first side 11. The plurality of pins 2 are inserted into the connector 1 side by side. Each pin 2 includes a first end 21 extending out of the first side 11 of the connector 1 through the frame opening 13, a press-fit terminal 22 extending out of the second side 12 of the connector, and a connecting portion 23 connecting the first end 21 and the press-fit terminal 22. The printed circuit board 3 is provided with a plurality of conductive receptacles 31, and each receptacle 31 is provided with a hole chamfer 311 at one end. The press-fit terminal 22 of the pin 2 is inserted into the corresponding receptacle 31 on the printed circuit board 3 through the hole chamfer 311, and the press-fit terminal 22 is in interference fit with the receptacle 31. The hole chamfer 311 serves as a guide structure for the press-fit terminal 22 of the pin 2 to be inserted into the receptacle 31, which reduces the requirement for the position degree of the press-fit terminal 22 of the pin 2. Although Figure 1 In the embodiment shown in Figure 1 , the first side 11 of the connector 1 is provided with two frame openings 13, and the number of frame openings 13 can also be set to one or more than two according to actual design needs. In some embodiments, the press-fit terminal 22 is formed by stamping a metal plate with a thickness of not more than 0.5 mm.

[0032] In some embodiments, please refer to Figure 2 , the press-fit terminal 22 of the pin 2 extending out of the second side 12 of the connector 1 is inserted into the receptacle 31 on the printed circuit board 3 after the connecting portion 23 is bent. The press-fit terminal 22 after the connecting portion 23 is bent is perpendicular to the first end 21.

[0033] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 7 , Figure 10 , and Figure 11As shown, the press-fit terminal 22 has a press-fit portion 222 which is in interference fit with the receptacle 31 on the printed circuit board 3, and a shoulder portion 223 which is connected between the press-fit portion 222 and the connecting portion 23. The shoulder portion 223 of the press-fit terminal 22 has a shoulder portion head 2231 which is widened transversely from the front end of the connecting portion 23, and a shoulder portion neck 2232, the shoulder portion head width W3 of the shoulder portion head 2231 is greater than the shoulder portion neck width W4 of the shoulder portion neck 2232. The shoulder portion 223 of the press-fit terminal 22 cooperates with other components of the electronic device to hold the press-fit terminal 22. In some embodiments, the press-fit portion thickness T2 of the press-fit portion 222 is greater than the connecting portion thickness T1 of the connecting portion 23, for example, the press-fit portion thickness T2 is not less than 0.5mm, while the connecting portion thickness T1 of the connecting portion 23 is not more than 0.5m. The press-fit portion 222 of the press-fit terminal 22 is an elastically deformable portion, when the press-fit terminal 22 is inserted into the receptacle 31 of the printed circuit board 3, the two side walls of the press-fit portion 222 are elastically deformed by the extrusion of the receptacle 31 wall, so that an interference fit is formed between the press-fit portion 222 and the receptacle 31. As shown in the figure, each side wall of the press-fit portion 222 has a middle plane 2222 which is parallel to the longitudinal direction of the press-fit terminal 22, and two inclined planes 2221, 2223, one inclined plane 2221 is inclined forwardly and narrows to the pin portion 221 from the front end of the middle plane 2222, the other inclined plane 2223 is inclined rearwardly and narrows to the shoulder portion 223 of the press-fit terminal 22 from the rear end of the middle plane 2222.

[0034] As shown in Figure 3 and Figure 4 , the hole opening chamfer 311 of the receptacle 31 guides the insertion of the pin portion 221 and the press-fit portion 222 of the press-fit terminal 22 into the receptacle, reducing the requirement for the position degree of the press-fit terminal 22, and also reducing the assembly difficulty of the pin 2 and the printed circuit board 3.

[0035] In alternative embodiments, the two side walls of the press-fit portion 222 of the press-fit terminal 22 can also be smooth curved side walls.

[0036] In addition, although Figure 3 and Figure 4 show a solid press-fit portion 222, in alternative embodiments, the press-fit portion 222 of the press-fit terminal 22 can also be designed as a hollow structure.

[0037] In some embodiments, please refer to Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the electronic device further comprises a guide plate 4 arranged on the side of the printed circuit board 3 facing the insertion of the press-fit terminals 22 of the plurality of pins 2. The guide plate 4 is substantially rectangular and has an attachment portion 41, 42 at each of its lengthwise ends. The second side 12 of the connector 1 has two lateral walls 14, 15 at each of its ends, each of which has a receiving portion 141, 151. The attachment portions 41, 42 of the guide plate 4 can be connected to the receiving portions 141, 151 of the lateral walls 14, 15 of the connector 1, for example by snap connection, so that the guide plate 4 is connected to the connector 1. The guide plate 4 can be made of plastic material.

[0038] In some embodiments, as shown in Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the guide plate 4 comprises a first side 43, a second side 44 opposite the first side 43, and a plurality of sunken holes 45 extending from the first side 43 to the second side 44. The bottom of each sunken hole 45 has a hole bottom surface 451 partially closing the sunken hole 45, so that each sunken hole 45 is a through hole 452 in the shape of a semi-circle. The shape of the through hole can also be designed in other shapes according to design requirements, for example a polygon. The press-fit terminals 22 of the plurality of pins 2 are inserted into the insertion holes 31 of the printed circuit board 3 via the through holes 452 of the sunken holes 45 of the guide plate 4. When the press-fit terminals 22 are inserted into the insertion holes 31 of the printed circuit board 3 in the proper position, a portion of the head 2231 of the shoulder portion 223 of the press-fit terminals 22 enters the sunken hole 45, and a portion of the lower side bottom surface of the neck portion 2232 of the shoulder portion 223 abuts against the hole bottom surface 451 of the sunken hole 45. Thus, the guide plate 4 guides and holds the press-fit terminals 22 of the plurality of pins 2 inserted into the plurality of insertion holes 31 of the printed circuit board 3. As shown in Figure 2 The press-fit terminals 22 of the plurality of pins 2 are inserted into the sunken holes 45 of the left region of the guide plate 4. The guide plate 4 is arranged to correct the position of the press-fit terminals 22 of the plurality of pins 2, especially when the design requires a small thickness and a large number of pins 2. For the sake of clarity, Figure 7 The hole chamfer 311 of the insertion hole 31 is not shown in

[0039] In Figure 2 , Figure 8 and Figure 9In the illustrated embodiment, the electronic device further includes a bottom plate 5 and a housing 6. The bottom plate 5 is generally rectangular in shape and includes a boss 51 that surrounds the closed shape of the rectangle to define an inner region 52 inside the boss 51 and an outer region 53 outside the boss 51. The boss 51 protrudes from the inner region 52 and the outer region 53. The inner region 52 has a plurality of bolt holes 521. The outer region 53 has a plurality of mounting holes 531 for mounting the electronic device to, for example, a vehicle. The housing 6 has a top wall 61, a left side wall 62, a right side wall 63, and a back side wall 64, i.e., the front side and the lower side of the housing 6 are open. The top wall 61, the left side wall 62, and the right side wall 63 of the housing 6 surround an opening 65 toward the front side of the housing 6 for the plug connector to be inserted.

[0040] In some embodiments, referring to Figure 8 As illustrated, the printed circuit board 3 is connected to the second side 12 of the plug connector 1 and has a plurality of through holes 32 corresponding to the positions of the plurality of bolt holes 521 of the bottom plate 5, and the housing 6 has nuts (not shown) corresponding to the positions of the plurality of bolt holes 521 of the bottom plate 5, which can be inserted into a plurality of posts 66 (two posts are shown) of the housing 6. The bottom plate 5, the printed circuit board 3, and the housing 6 are connected together by a plurality of bolts 7 passing through the plurality of bolt holes 521, the plurality of through holes 32, and being received by the plurality of nuts. The printed circuit board 3 connected to the plug connector 1 is arranged between the boss 51 of the bottom plate 5 and the posts 66 of the housing 6. The left side wall 62, the right side wall 63, and the back side wall 64 of the housing 6 surround the outer side of the boss 51 of the bottom plate 5.

[0041] In some embodiments, the bottom plate 5 is made of a metal material, and the boss 51 on the bottom plate 5 is formed by stamping. The housing 6 can be made of a plastic material.

[0042] In some embodiments, the number of press-fit terminals 22 and the number of corresponding receptacles 31 on the printed circuit board 3 are at least 50, respectively.

[0043] In some embodiments, referring to Figure 10 and Figure 11 As illustrated, the connection portions 23 of the plurality of pins 2 of the electronic device have a connection portion thickness T1 of 0.4 mm and a connection portion width W1 of 0.5 mm.

[0044] In some embodiments, the press-fit region width W2 between the intermediate planes 2222 of the two side walls of the press-fit portion 222 of the press-fit terminal 22 (i.e., the press-fit region of the press-fit terminal 22) is in the range of 0.7-0.8 mm. The shoulder portion head width W3 of the shoulder portion head 2231 of the shoulder portion 223 of the press-fit terminal 22 is in the range of 1-1.8 mm.

[0045] In some embodiments, the press-fit terminal 22 is formed by stamping a metal plate having a thickness of no more than 0.4 mm, and the minimum width W1 of the connecting portion 23 is no more than 0.6 mm.

[0046] According to some aspects of the present application, the electronic device functions as an electronic control unit, for example, the electronic device can be an airbag electronic control unit.

[0047] The printed circuit board jack of the electronic device of the present application is provided with a hole chamfer at one end, and during the process of inserting the pin into the jack, as long as the pin of the press-fit terminal is in the area of the hole chamfer, the press-fit terminal can be successfully inserted into the jack. In addition, the electronic device of the present application is also provided with a guide plate, which further corrects the position of the press-fit terminal before the press-fit terminal is inserted into the jack. The electronic device of the present application reduces the requirement for the position of the pin press-fit terminal. Compared with the huge investment in manufacturing equipment and the high requirement for the size precision of the parts, the printed circuit board supplier side can easily manufacture the printed circuit board jack with the hole chamfer, which does not cause significant cost increase, and also can reduce the failure rate of the assembly line.

[0048] Although specific embodiments of the present application have been described, they are presented by way of example only and are not intended to limit the scope of the present application. Rather, the described structures can be embodied in a variety of other forms; in addition, various substitutions and changes can be made to the described structure without departing from the spirit and scope of the present application.

Claims

1. An electronic device, characterized by comprising: The electronic device comprises, a connector comprising a first side provided with a frame opening and a second side opposite to the first side; a plurality of pins arranged side by side on the connector, each pin comprising a first end extending out of the first side of the connector via the frame opening, a press-fit terminal extending out of the second side of the connector, and a connecting portion connecting the first end and the press-fit terminal; and a printed circuit board provided with a plurality of conductive receptacles, each receptacle having an opening chamfer at one end, wherein the press-fit terminal of the pin is inserted into the corresponding receptacle on the printed circuit board via the opening chamfer, the press-fit terminal is in interference fit with the receptacle, and the press-fit terminal is formed by stamping a metal plate with a thickness not exceeding 0.5 mm. 2.The electronic device of claim 1, wherein, The press-fit terminal has a press-fit portion in interference fit with the receptacle on the printed circuit board and a shoulder portion connected between the press-fit portion and the connecting portion, the shoulder portion has a shoulder head portion transversely widened from the front end of the connecting portion and a shoulder neck portion, the shoulder head portion width W3 of the shoulder portion is greater than the shoulder neck portion width W4 of the shoulder portion, wherein the press-fit portion thickness T2 of the press-fit portion is greater than the connecting portion thickness T1 of the connecting portion, wherein the press-fit portion thickness T2 is not less than 0.5 mm, and the connecting portion thickness T1 of the connecting portion does not exceed 0.5 mm. 3.The electronic device of claim 2, wherein, The press-fit portion of the press-fit terminal is an elastically deformable portion, when the press-fit terminal is inserted into the receptacle of the printed circuit board, two side walls of the press-fit portion are elastically deformed by the extrusion of the receptacle wall, so that the interference fit is formed between the press-fit portion and the receptacle, the press-fit terminal also has a pin portion at the front end of the press-fit portion, the pin portion has a pointed end for inserting into the receptacle on the printed circuit board. 4.The electronic device of claim 3, wherein, Each of the side walls has a middle plane parallel to the longitudinal direction of the press-fit terminal, and two inclined planes, one of the two inclined planes is inclined forward from the front end of the middle plane to narrow the pin portion of the press-fit terminal, the other of the two inclined planes is inclined backward from the rear end of the middle plane to narrow the shoulder portion of the press-fit terminal. 5.The electronic device of claim 2, wherein, The electronic device further comprises a guide plate arranged on the side of the printed circuit board facing the insertion of the press-fit terminal, the guide plate is rectangular and provided with an attachment portion at each end in the length direction, the second side of the connector is provided with two lateral walls, each of the two lateral walls is provided with a receiving portion, the attachment portions at the two ends of the guide plate are connected to the receiving portions on the two lateral walls of the connector, so that the guide plate is connected to the connector, the guide plate comprises a first side, a second side opposite to the first side, and a plurality of sunken holes extending from the first side to the second side, the bottom of each sunken hole has a hole bottom surface, the hole bottom surface partially closes the sunken hole, so that each sunken hole has a through hole in the shape of a nearly semicircle. 6.The electronic device of claim 5, wherein, When the press-fit portion of the press-fit terminal is inserted into the insertion hole of the printed circuit board in place through the through hole of the sunken recess of the guide plate, a portion of the head of the shoulder portion of the press-fit terminal enters the sunken recess of the guide plate, and a portion of the lower side surface of the neck portion of the shoulder portion abuts against the recess bottom surface of the sunken recess, the portion of the press-fit terminal passing through the through hole and the through hole form a clearance fit. 7.The electronic device of claim 1, wherein, The electronic device further includes a bottom plate including a boss protruding from an inner region and an outer region of the boss, the boss being enclosed in a closed shape to define the inner region inside the boss and the outer region outside the boss, the inner region having a plurality of bolt holes, the outer region having a plurality of mounting holes for mounting the electronic device, and a housing having a top wall, a left side wall, a right side wall, and a rear side wall, the top wall, the left side wall, and the right side wall surrounding an opening of the housing facing a front side of the housing for the plug connector to be inserted, the printed circuit board being connected to the second side of the plug connector and having a plurality of through holes corresponding to positions of the plurality of bolt holes of the bottom plate, and the housing having a plurality of nuts corresponding to the positions of the plurality of bolt holes of the bottom plate, the plurality of nuts being respectively embedded in a plurality of protrusions of the housing, the bottom plate, the printed circuit board, and the housing being connected together by a plurality of bolts passing through the plurality of bolt holes, the plurality of through holes, and being received by the plurality of nuts, thereby assembling the printed circuit board in place between the boss of the bottom plate and the protrusions of the housing, the left side wall, the right side wall, and the rear side wall of the housing surrounding an outer side of the boss of the bottom plate. 8.The electronic device of claim 1, wherein, The press-fit terminal of the pin extending from the second side of the plug connector is inserted into the insertion hole on the printed circuit board after the connection portion is bent, the press-fit terminal being perpendicular to the first end of the pin after the connection portion is bent. 9.The electronic device of claim 2, wherein, The number of the press-fit terminals and the number of the corresponding insertion holes on the printed circuit board are at least 50, the press-fit terminals are stamped from a metal plate with a thickness not exceeding 0.4 mm, and the minimum width W1 of the connection portion is not greater than 0.6 mm. 10.The electronic device of any one of claims 1 to 9, wherein, The electronic device is configured as an airbag electronic control unit. The electronic device is configured as an airbag electronic control unit.

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