An automobile electronic control unit facilitating pin positioning

Abstract

This utility model discloses an automotive electronic control unit that facilitates pin positioning, including a housing, a circuit board, and a connector. The connector includes a base and pins, with the inner end of the pins engaging with the circuit board. It also includes an alignment substrate with multiple alignment holes for the pins to pass through. A first positioning sleeve and a second positioning sleeve are respectively provided on both sides of the alignment substrate. The base has a first cantilever and a second cantilever, each with a first positioning rod and a second positioning rod that engage with the first and second positioning sleeves. The circuit board has two positioning holes for the first and second positioning rods to be inserted. The first and second cantilever abuts against the upper ends of the first and second positioning sleeves. This utility model not only facilitates pin positioning and enables quick insertion and engagement of the pins with the circuit board, but also reduces production costs by requiring only the alignment substrate to be replaced if the alignment holes on the alignment substrate are defective.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic control unit technology, and in particular to an automotive electronic control unit that is easy to position with pins. Background Technology

[0002] With the continuous development of automotive technology, the Electronic Control Unit (ECU), as a core component of the automotive industry, is becoming increasingly important. An ECU is a microprocessor-based device that receives signals from various sensors, processes them, and then sends control commands to actuators to ensure that the engine and other automotive systems operate according to preset programs and parameters, achieving precise control over various automotive functions.

[0003] Currently, existing automotive electronic control units typically include a housing, a circuit board mounted inside the housing, and connectors mounted on the side of the housing. The connector consists of a base and a set of pins on the base. The inner ends of the pins engage with the circuit board to achieve electrical connection. In actual production, a aligning substrate is usually provided on the connector's base. This aligning substrate has multiple aligning holes corresponding to the holes on the circuit board. During connector production, the pins are pre-passed through the aligning holes on the substrate, ensuring that the pins on the connector can be quickly inserted into the holes on the circuit board, improving assembly efficiency. However, currently, the base and aligning substrate on connectors are usually a single unit, with a flange extending directly from the base as the aligning substrate. However, due to the large number of aligning holes, problems such as abnormal hole diameter, hole position deviation, and hole wall defects are prone to occur. Therefore, the entire base needs to be discarded and replaced with a qualified base for assembly, resulting in high production costs.

[0004] Therefore, it is necessary to design an automotive electronic control unit that is easy to position pins and reduces costs to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an automotive electronic control unit that facilitates pin positioning. This invention not only facilitates pin positioning and enables quick insertion and connection between the pin and the circuit board, but also allows for the replacement of the alignment substrate when the alignment hole of the alignment substrate is defective, which helps to reduce production costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive electronic control unit for easy pin positioning, comprising a housing, a circuit board installed inside the housing, and a connector installed on the side of the housing. The housing includes a base plate and a cover plate connected together by fasteners. The circuit board is sandwiched between the cover plate and the base plate. The connector includes a base body and a set of pins disposed on the base body, the inner end of which is inserted into the circuit board. It also includes an alignment substrate, which has multiple alignment holes for the pins to pass through. A first positioning sleeve and a second positioning sleeve are respectively provided on both sides of the alignment substrate. A first cantilever and a second cantilever are provided at one end of the base body extending into the housing. A first positioning rod and a second positioning rod are respectively provided on the first and second cantilever to cooperate with the first and second positioning sleeves. The circuit board has two positioning holes for the insertion of the first and second positioning rods. The first and second cantilever abut against the upper ends of the first and second positioning sleeves, respectively, causing the alignment substrate to be pressed firmly onto the circuit board.

[0007] By adopting the above technical solution, the alignment substrate adopts a detachable design, which facilitates the insertion and engagement structure of the positioning rod and the positioning sleeve to achieve rapid positioning and installation of the substrate and the base. When the cover plate is connected to the base plate, the base, the circuit board and the alignment substrate can be fixed at the same time, making the assembly operation very convenient. By setting the alignment substrate, it is not only easy to position the pins and realize the rapid insertion and engagement of the pins and the circuit board, but also only the alignment substrate needs to be replaced when the alignment hole of the alignment substrate is defective, which helps to reduce production costs.

[0008] The present invention is further configured such that the first positioning rod is interference-fitted with the first positioning sleeve, the inner hole of the second positioning sleeve is an elongated oval shape extending towards or away from the first positioning sleeve, and the width of the inner hole of the second positioning sleeve is equivalent to the outer diameter of the second positioning rod.

[0009] By adopting the above technical solution, the first positioning rod and the first positioning sleeve are interference-fitted, and the design of the inner hole of the second positioning sleeve is long and round. The insertion position of the second positioning rod can be adapted according to the distance between the first positioning rod and the second positioning rod, which can reduce the processing accuracy requirements of the distance between the first positioning rod and the second positioning rod, making the assembly of the base body and the alignment plate more convenient.

[0010] The present invention is further configured such that the inner wall of the first positioning sleeve is provided with a plurality of pressing protrusions for pressing against the outer circular surface of the first positioning rod.

[0011] By adopting the above technical solution, an interference fit can be achieved between the first positioning rod and the first positioning sleeve, which not only fixes the two together but also helps to ensure their coaxiality.

[0012] The present invention is further configured such that the ends of the first cantilever and the second cantilever are respectively provided with a first pressure foot and a second pressure foot extending downward for pressing the circuit board onto the base plate.

[0013] By adopting the above technical solutions, the stability of circuit board installation can be improved.

[0014] The present invention is further configured such that the bottom of the alignment substrate is provided with a plurality of support protrusions, the cross-section of the support protrusions is semi-circular, and the arc surface at the bottom of the support protrusions abuts against the circuit board.

[0015] By adopting the above technical solution, the alignment substrate uses support protrusions to abut against the circuit board, rather than being abutted against the circuit board as a whole, which can reduce its contact area with the circuit board and avoid damaging the circuits and components on the circuit board.

[0016] The present invention is further configured such that the lower end of the first positioning sleeve is provided with a plurality of first positioning protrusions, and the lower end of the second positioning sleeve is provided with a plurality of second positioning protrusions.

[0017] By adopting the above technical solution, the positioning protrusion structure can be used in conjunction with the groove on the tooling to position the substrate, making it easy for the pin to pass through quickly.

[0018] The present invention is further configured such that two alignment bushings are integrally provided on the base plate, and the lower ends of the first positioning rod and the second positioning rod are respectively inserted into the corresponding alignment bushings.

[0019] By adopting the above technical solution, the base body can be positioned, thereby improving the stability of the base body and the mounting structure of the alignment substrate.

[0020] The present invention is further provided that a pressure stabilizing groove is provided through the side of the alignment bushing.

[0021] By adopting the above technical solution, when the first positioning rod and the second positioning rod are inserted into or pulled out of the corresponding positioning bushing, the internal pressure of the positioning bushing can be balanced, making the first positioning rod, the second positioning rod and the corresponding positioning bushing cooperate more smoothly.

[0022] The present invention is further configured such that the side of the seat body is provided with a plurality of limiting protrusions, and the inner wall of the outer shell is provided with a plurality of limiting grooves that fit with the limiting protrusions.

[0023] By adopting the above technical solution, the base plate and cover plate can be connected together, and the seat can be limited and fixed, making installation very convenient.

[0024] The present invention is further provided that the circuit board is provided with a pre-positioning circular hole, and the cover plate is provided with a positioning convex shaft for interlocking with the pre-positioning circular hole.

[0025] By adopting the above technical solution, the position of the circuit board can be pre-positioned, and with the constraint of the two positioning rods, the stability of the circuit board mounting structure can be further improved. Attached Figure Description

[0026] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is an exploded view of the entire utility model; Figure 3 This is a cross-sectional view of the entire utility model; Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle; Figure 5 This is a schematic diagram of the alignment substrate of this utility model; Figure 6 This is a schematic diagram of the structure of the base of this utility model; Figure 7 This is a schematic diagram of the alignment bushing of this utility model; Figure 8 This is a partial cross-sectional view of the present invention.

[0027] In the diagram: 1. Outer shell; 2. Circuit board; 3. Connector; 4. Base plate; 5. Cover plate; 6. Seat; 7. Pin; 8. Alignment substrate; 9. Alignment hole; 10. First positioning sleeve; 11. Second positioning sleeve; 12. First cantilever; 13. Second cantilever; 14. First positioning rod; 15. Second positioning rod; 16. Positioning hole; 17. Pressing protrusion; 18. First pressure foot; 19. Second pressure foot; 20. Support protrusion; 21. First positioning protrusion; 22. Second positioning protrusion; 23. Alignment bushing; 24. Pressure stabilizing groove; 25. Limiting protrusion; 26. Limiting groove; 27. Pre-positioning round hole; 28. Positioning convex shaft. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: As attached Figures 1-8The illustrated automotive electronic control unit for easy pin positioning includes a housing 1, a circuit board 2 mounted inside the housing 1, and a connector 3 mounted on the side of the housing 1. The housing 1 includes a base plate 4 and a cover plate 5 connected together by fasteners (screws). The circuit board 2 is sandwiched between the cover plate 5 and the base plate 4. The connector 3 includes a base 6 and a set of pins 7 disposed on the base 6, with the inner end of each pin 7 engaging with the circuit board 2. It also includes a positioning substrate 8, which has multiple positioning holes 9 for the pins 7 to pass through. A first positioning sleeve 10 and a second positioning sleeve 10 are integrally formed on both sides of the positioning substrate 8. The base 6, which extends into the outer shell 1, is integrally provided with a first cantilever 12 and a second cantilever 13. The first cantilever 12 and the second cantilever 13 are respectively provided with a first positioning rod 14 and a second positioning rod 15 that cooperate with the first positioning sleeve 10 and the second positioning sleeve 11. The lower ends of the first positioning rod 14 and the second positioning rod 15 are needle-shaped. The circuit board 2 is provided with two positioning holes 16 for the insertion of the first positioning rod 14 and the second positioning rod 15. The first cantilever 12 and the second cantilever 13 abut against the upper ends of the first positioning sleeve 10 and the second positioning sleeve 11, causing the alignment substrate 8 to be pressed tightly onto the circuit board 2. The alignment substrate 8 adopts a detachable design, which facilitates the quick positioning and installation of the substrate and the base 6 through the insertion and engagement structure of the positioning rod and the positioning sleeve. When the cover plate 5 is connected to the base plate 4, the base 6, the circuit board 2 and the alignment substrate 8 can be fixed at the same time, making the assembly operation very convenient. By setting the alignment substrate 8, it is not only easy to position the pin 7 and realize the quick insertion and engagement of the pin 7 and the circuit board 2, but also only the alignment substrate 8 needs to be replaced separately when the alignment hole 9 of the alignment substrate 8 is defective, which helps to reduce production costs.

[0030] As attached Figures 3-6 The first positioning rod 14 is interference-fitted with the first positioning sleeve 10. The inner hole of the second positioning sleeve 11 is an elongated oval shape extending towards or away from the first positioning sleeve 10. The width of the inner hole of the second positioning sleeve 11 is approximately equal to the outer diameter of the second positioning rod 15, and the length of the inner hole of the second positioning sleeve 11 is greater than the outer diameter of the second positioning rod 15. The interference fit between the first positioning rod 14 and the first positioning sleeve 10, and the elongated oval design of the inner hole of the second positioning sleeve 11, allows for adaptation to the insertion position of the second positioning rod 15 based on the distance between the first positioning rod 14 and the second positioning rod 15. This reduces the precision requirements for the machining of the distance between the first positioning rod 14 and the second positioning rod 15, making the assembly of the base 6 and the alignment substrate 8 more convenient.

[0031] As attached Figure 5As shown, the inner wall of the first positioning sleeve 10 is provided with a plurality of pressing protrusions 17 for pressing against the outer circular surface of the first positioning rod 14, and the plurality of pressing protrusions 17 are evenly distributed in a circumferential array. This design can achieve an interference fit between the first positioning rod 14 and the first positioning sleeve 10, and while fixing the two, it also helps to ensure their coaxiality.

[0032] As attached Figure 6 As shown, the ends of the first cantilever 12 and the second cantilever 13 are respectively integrally provided with a first pressure foot 18 and a second pressure foot 19 extending downward for pressing the circuit board 2 onto the base plate 4. This design can improve the stability of the circuit board 2 installation.

[0033] As attached Figure 5 As shown, the bottom of the alignment substrate 8 is provided with multiple support protrusions 20. The cross-section of each support protrusion 20 is semi-circular, and the arc surface of the bottom of the support protrusion 20 abuts against the circuit board 2. The alignment substrate 8 uses support protrusions 20 to abut against the circuit board 2, rather than being entirely abutted against, which reduces the contact area between the substrate and the circuit board 2, avoiding damage to the circuits and components on the circuit board 2. Furthermore, the surface of the support protrusions 20 can also be covered with a silicone layer, thereby further reducing damage to the circuit board 2.

[0034] As attached Figure 5 As shown, the lower end of the first positioning sleeve 10 is provided with a plurality of first positioning protrusions 21, and the lower end of the second positioning sleeve 11 is provided with a plurality of second positioning protrusions 22. The positioning protrusion structure can be used with the groove on the tooling to position the substrate 8, so as to facilitate the quick passage of the pin 7.

[0035] As attached Figure 4 and attached Figure 7 As shown, two alignment bushings 23 are integrally formed on the base plate 4, and the lower ends of the first positioning rod 14 and the second positioning rod 15 are respectively inserted into the corresponding alignment bushings 23. This design can position the seat 6 and improve the stability of the mounting structure of the seat 6 and the alignment base plate 8.

[0036] As attached Figure 7 As shown, a pressure-stabilizing groove 24 is provided through the side of the alignment bushing 23. When the first positioning rod 14 and the second positioning rod 15 are inserted into or pulled out of the corresponding positioning bushing, the internal pressure of the positioning bushing can be balanced, making the first positioning rod 14, the second positioning rod 15 and the corresponding positioning bushing cooperate more smoothly.

[0037] As attached Figure 8 As shown, the seat body 6 has multiple limiting protrusions 25 on its side, and the inner wall of the outer shell 1 has multiple limiting grooves 26 that fit with the limiting protrusions 25. When the base plate 4 and the cover plate 5 are connected together, the seat body 6 can be fixed in place, making installation very convenient.

[0038] As attached Figure 8 As shown, the circuit board 2 is also provided with a pre-positioning circular hole 27, and the cover plate 5 is provided with a positioning convex shaft 28 for interlocking with the pre-positioning circular hole 27. This design can pre-position the circuit board 2, and with the constraint of the two positioning rods, it further improves the stability of the circuit board 2 mounting structure.

Claims

1. An automotive electronic control unit for easy pin positioning, comprising a housing (1), a circuit board (2) mounted inside the housing (1), and a connector (3) mounted on the side of the housing (1), wherein the housing (1) comprises a base plate (4) and a cover plate (5) connected together by fasteners, the circuit board (2) is sandwiched between the cover plate (5) and the base plate (4), and the connector (3) comprises a base (6) and a set of pins (7) disposed on the base (6), the inner end of the pins (7) being inserted into the circuit board (2); characterized in that: It also includes a positioning substrate (8), which has a plurality of positioning holes (9) for the pins (7) to pass through. The positioning substrate (8) has a first positioning sleeve (10) and a second positioning sleeve (11) on its two sides respectively. The end of the seat (6) that extends into the outer shell (1) has a first cantilever (12) and a second cantilever (13). The first cantilever (12) and the second cantilever (13) are respectively provided with a first positioning rod (14) and a second positioning rod (15) that cooperate with the first positioning sleeve (10) and the second positioning sleeve (11). The circuit board (2) has two positioning holes (16) for the first positioning rod (14) and the second positioning rod (15) to be inserted respectively. The first cantilever (12) and the second cantilever (13) abut against the upper ends of the first positioning sleeve (10) and the second positioning sleeve (11) respectively, so that the positioning substrate (8) is pressed on the circuit board (2).

2. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: The first positioning rod (14) is interference-fitted with the first positioning sleeve (10), and the inner hole of the second positioning sleeve (11) is an elongated oval shape extending towards or away from the first positioning sleeve (10). The width of the inner hole of the second positioning sleeve (11) is equivalent to the outer diameter of the second positioning rod (15).

3. The automotive electronic control unit with easy pin positioning as claimed in claim 2 wherein: The inner wall of the first positioning sleeve (10) is provided with a plurality of pressing protrusions (17) for pressing against the outer circular surface of the first positioning rod (14).

4. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: The ends of the first cantilever (12) and the second cantilever (13) are respectively provided with a first pressure foot (18) and a second pressure foot (19) extending downward for pressing the circuit board (2) onto the base plate (4).

5. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: The bottom of the alignment substrate (8) is provided with a plurality of support protrusions (20), the cross section of the support protrusions (20) is semi-circular, and the arc surface at the bottom of the support protrusions (20) abuts against the circuit board (2).

6. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: The lower end of the first positioning sleeve (10) is provided with a plurality of first positioning protrusions (21), and the lower end of the second positioning sleeve (11) is provided with a plurality of second positioning protrusions (22).

7. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: Two alignment bushings (23) are integrally provided on the base plate (4), and the lower ends of the first positioning rod (14) and the second positioning rod (15) are respectively inserted into the corresponding alignment bushings (23).

8. The automotive electronic control unit with easy pin positioning as claimed in claim 7 wherein: The alignment bushing (23) has a pressure stabilizing groove (24) through the side.

9. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: The seat (6) has multiple limiting protrusions (25) on its side, and the inner wall of the outer shell (1) has multiple limiting grooves (26) that fit with the limiting protrusions (25).

10. The automotive electronic control unit with easy pin positioning as claimed in claim 1 wherein: The circuit board (2) is also provided with a pre-positioning circular hole (27), and the cover plate (5) is provided with a positioning convex shaft (28) for interlocking with the pre-positioning circular hole (27).

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