Automobile connector with compatibility protection

Abstract

The utility model belongs to the technical field of automobile parts, and relates to an automobile connector with compatibility protection. The gap between the connector sealing rib (1f) and the upper shell groove (4d) is filled with the upper sealant (4e), or the upper shell groove (4d) is not coated with the upper sealant (4e); the connector sealing surface (1h) is coated with a lower bottom plate sealing surface (5b), the lower bottom plate sealing surface (5b) is coated with a lower sealant (5c), and after the ECU lower shell bottom plate (5) is assembled, the lower sealant (5c) fills a gap between the connector sealing surface (1h) and the lower bottom plate sealing surface (5b), or the lower sealant (5c) is not coated between the lower bottom plate sealing surface (5b) and the connector shell (1). According to the automobile connector with compatibility protection, protection requirements of different levels are met according to practical application, and the problems that waste is caused when a high-protection-level connector is applied to a low-requirement automobile model and the low-protection-level connector cannot be applied to the high-requirement automobile model are solved. And the method can be applied to different automobile ECUs and other products according to different requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and more specifically, relates to an automobile connector with compatibility protection. Background Art

[0002] With the development of the automotive industry, automotive end-use applications and uses have become increasingly diverse, necessitating different requirements for automotive connectors. For vehicles with relatively comfortable operating environments or conventional driving, a low-level protection level (IPX2, IPX3, or IPX4 waterproof rating) with a connector-equipped automotive electronic control unit (ECU) can meet these requirements. However, for vehicles with harsher operating environments or non-standard driving (e.g., off-roading, wading), a higher-level protection level (IPX7 or IPX8 waterproof rating) with a connector-equipped ECU is required. Currently, traditional automotive connectors often lack compatibility with both high and low protection level requirements. This means that when high-level protection level connectors are used in vehicles with lower protection requirements (those not requiring a high level of protection), costs are excessive and resources are wasted. Meanwhile, low-level protection level connectors cannot be used in vehicles with higher protection requirements (those requiring a high level of protection).

[0003] The prior art includes a technology titled "An Automotive Connector" with a publication (announcement) number of "CN214957539U." This technology relates to the field of automotive connectors, and more particularly, to an automotive connector. The automotive connector includes a main body having a first end face and a second end face for mounting and securing to a designated location. The main body has at least one slot with an opening located on the first end face and a through-hole with an opening located on the second end face, the through-hole communicating with the slot. A connecting terminal has a first end and a second end, the first end of the connecting terminal being disposed in the slot and the second end of the connecting terminal extending through the through-hole. The first end of the connecting terminal is configured to electrically connect to a plug inserted into the slot, and the second end of the connecting terminal is configured to electrically connect to a terminal circuit board. A waterproof ring is disposed on the outer edge of the slot. During installation, the gap between the main body and the designated location is isolated by the waterproof ring, thereby achieving a waterproof effect on the automotive connector. However, this technology does not address the technical problems and technical solutions of the present application. Utility Model Content

[0004] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a compatibility protection design is provided to achieve that the same connector can meet different protection requirements according to actual applications, solve the problem of waste when high-protection level connectors are applied to low-requirement models and the problem that low-protection level connectors cannot be applied to high-requirement models, so that the automotive connector with compatibility protection can be applied to products such as automotive ECUs according to needs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0006] The utility model is an automobile connector with compatibility protection, wherein a first upper flange surface and a second upper flange surface are provided on an outer ring of a connector shell, a connector sealing rib is further provided on an outer ring of the connector shell, a connector groove is formed between the connector sealing rib and the second upper flange surface, an upper shell sealing groove, an upper shell inner rib position, and an upper shell outer rib position are provided on an ECU upper shell, an upper shell groove is formed between the upper shell inner rib position and the upper shell outer rib position, an upper shell groove is coated with sealant, and after the ECU upper shell is assembled, the upper sealant will fill the gap between the connector sealing rib and the upper shell groove, or the upper sealant is not coated in the upper shell groove; a lower flange surface is provided on the lower part of the connector shell, a lower bottom plate rib position and a lower bottom plate sealing surface are provided on a bottom plate of a lower shell of the ECU, a lower sealant is coated on the lower bottom plate sealing surface, and after the ECU lower bottom plate is assembled, the lower sealant fills the gap between the connector sealing surface and the lower bottom plate sealing surface, or the lower sealant is not coated between the lower bottom plate sealing surface and the connector shell.

[0007] The automobile connector with compatibility protection further includes a pin positioning plate, a connector housing is provided with pins, and a connector first connection frame opening and a connector second connection frame opening are provided on the connector housing.

[0008] The connector housing is provided with a first positioning protrusion and a second positioning protrusion, the connector guide positioning hole includes a connector first guide positioning hole and a connector second guide positioning hole, the first positioning protrusion is provided with a connector first guide positioning column and a connector first guide positioning hole, and the second positioning protrusion is provided with a connector second guide positioning column and a connector second guide positioning hole.

[0009] The positioning plate guide positioning holes on the pin positioning plate include two first positioning plate guide positioning holes and two second positioning plate guide positioning holes. The printed circuit board is provided with circuit board guide positioning holes, which include first circuit board guide positioning holes and second circuit board guide positioning holes.

[0010] The upper housing of the ECU is provided with upper housing guide and positioning columns, which include a first upper housing guide and positioning column and a second upper housing guide and positioning column.

[0011] The thickness of the connector sealing rib is smaller than the width of the upper shell sealing groove. After the connector and the upper shell are assembled, the upper sealant is squeezed to fill the gap between the two components in an N-shaped filling.

[0012] When the automotive connector is connected to the ECU upper housing, the outer rib of the upper housing rests against the first upper flange surface, the second upper flange surface is embedded in the upper housing groove, the inner rib of the upper housing is embedded in the connector groove, the connector sealing rib is embedded in the upper housing sealing groove, and the upper housing guide positioning column passes through a connector guide positioning hole, a positioning plate guide positioning hole, and a printed circuit board guide positioning hole in sequence.

[0013] When the automobile connector is connected to the upper housing of the ECU, the lower flange surface of the lower part of the connector housing abuts against the lower base plate of the ECU.

[0014] The lower part of the connector housing is provided with an external mating folded edge.

[0015] The diameter of the guide positioning hole of the positioning plate is smaller than the diameter of the first guide positioning hole, and the diameter of the guide positioning hole of the printed circuit board is smaller than the diameter of the guide positioning hole of the positioning plate.

[0016] The technical solution of this utility model is adopted, and the working principle and beneficial effects are as follows:

[0017] The utility model discloses a compatibility protection's car connector, connector casing includes first connection frame mouth and connector second connection frame mouth, is used for with wire harness connector realizes electric connection, first upper flange surface and ECU upper casing's outer muscle position gap fit, second upper flange surface 1d and ECU upper casing's upper casing groove staggered fit, connector groove and ECU upper casing's inner muscle position staggered fit, connector sealing rib and ECU upper casing sealing groove staggered fit. When ECU adopts sealed type, through the upper casing groove in ECU upper casing is coated with seal, makes two parts sealed connection, to realize best sealing effect, the shape of the connector sealing rib's going path is U character, and the path is simple, and the angle of two gradient trends and horizontal is 120 DEG-130 DEG, and this comfortable angle can guarantee when coating sealant, the stable residence of sealant on the gradient. Lower flange surface and ECU lower casing's lower bottom plate muscle position staggered fit, connector sealing surface and ECU lower casing lower bottom plate sealing surface carry out gap fit. When ECU adopts sealed type, through adding lower sealant between connector sealing surface and lower bottom plate sealing surface, makes two parts sealed connection, to realize best sealing effect. Connector first guide positioning column, connector second guide positioning column are set up on connector casing, when PCBA is assembled with connector casing, is used for PCBA smooth guide, and realizes accurate positioning, realizes PCBA and the smooth crimping of connector, the diameter of connector first guide positioning column, connector second guide positioning column is different, and with the positioning hole of PCBA is corresponding fit, the purpose is when PCBA is loaded into the connector, prevents PCBA and avoids leading to the destruction of PCBA crimping, plays the physical foolproof function, connector first guide positioning hole is positioning round hole, is used for the rough guide positioning when connector is loaded into ECU upper casing, connector second guide positioning hole is positioning long round hole, is used for the rough guide positioning when connector is loaded into ECU upper casing, connector first guide positioning hole and connector second guide positioning hole are round hole and long round hole design combination, play the function of avoiding overpositioning, lower flange chamfer is used for ECU lower bottom plate and slides in smoothly. The beneficial effect of the structure of the utility model is: (1) high protection compatibility: connector reserved sealing feature, when not adding sealant strip, through the multistage cooperation of feature and form the downward, countercurrent, multistage complex waterproof path, realize IPX2, IPX3 and IPX4 waterproof requirement, satisfy low protection requirement, when adding sealant strip, the sealed connection between parts is formed, realize IPX7, IPX8 sealing waterproof requirement, satisfy high protection requirement. (2) high manufacturability: relevant protection cooperation feature or sealing feature is simple and easy to form, and the assembly is simple, and the reliability is high, and the expensive manufacturing process or assembly process is not needed.(3) Precise guidance and positioning: The connector adopts a positioning method of guide positioning columns and guide positioning holes (round hole + oblong hole). When assembled with the ECU housing, a step-by-step guidance and positioning method from coarse guidance to fine guidance is used, which not only ensures smooth and precise guidance and positioning, but also avoids the problem of over-positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of this specification:

[0019] Figure 1 This is a schematic structural diagram of the automotive connector with compatibility protection according to the present invention;

[0020] Figure 2 This is a schematic structural diagram of the connector housing of the automotive connector with compatibility protection according to the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the connector housing of the automotive connector with compatibility protection according to the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the connector housing of the automotive connector with compatibility protection according to the present utility model;

[0023] Figure 5 This is a schematic structural diagram of the pin positioning plate of the automotive connector with compatibility protection according to the present utility model;

[0024] Figure 6 This is a schematic structural diagram of the connection between the connector housing and the printed circuit board of the automotive connector with compatibility protection according to the present invention;

[0025] Figure 7 This is a schematic diagram of the matching principle between the connector housing and the ECU housing of the automotive connector with compatibility protection described in the present utility model;

[0026] Figure 8 This is a schematic diagram of the matching principle between the connector housing and the ECU housing of the automotive connector with compatibility protection described in the present utility model;

[0027] Figure 9 This is a schematic structural diagram of the connection between the connector housing and the ECU housing of the automotive connector with compatibility protection described in the present utility model;

[0028] Figure 10 This is a schematic structural diagram of the connection between the connector housing and the ECU housing of the automotive connector with compatibility protection described in the present utility model;

[0029] Figure 11This is a schematic diagram of the connection structure between the connector housing and the lower base plate of the automotive connector with compatibility protection according to the present invention;

[0030] Figure 12 This is a schematic diagram of the connection structure between the connector housing and the lower base plate of the automotive connector with compatibility protection according to the present invention;

[0031] Figure 13 This is a schematic structural diagram of the sealant provided on the automotive connector with compatibility protection according to the present invention;

[0032] Figure 14 This is a schematic structural diagram of the sealant provided on the automotive connector with compatibility protection according to the present invention; DETAILED DESCRIPTION

[0033] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connections of the various components involved, the functions and working principles of the various components, etc., by referring to the accompanying drawings.

[0034] As attached Figure 1 As shown, the utility model is an automotive connector with compatibility protection. The outer ring of the connector housing 1 is provided with a first upper flange surface 1c and a second upper flange surface 1d. The outer ring of the connector housing 1 is also provided with a connector sealing rib 1f. A connector groove 1e is formed between the connector sealing rib 1f and the second upper flange surface 1d. The ECU upper housing 4 is provided with an upper housing sealing groove 4a, an upper housing inner rib position 4b, and an upper housing outer rib position 4c. An upper housing groove 4d is formed between the upper housing inner rib position 4b and the upper housing outer rib position 4c. A sealant 4e can be applied in the upper housing groove 4d. After assembly, the upper sealant 4e fills the gap between the connector sealing rib 1f and the upper shell groove 4d, or the upper shell groove 4d is not coated with the upper sealant 4e; the lower flange surface 1g is provided at the lower part of the connector shell 1, and the lower bottom plate rib position 5a and the lower bottom plate sealing surface 5b are provided on the ECU lower shell bottom plate 5, and the lower sealant 5c is coated on the lower bottom plate sealing surface 5b. After the ECU lower shell bottom plate 5 is assembled, the lower sealant 5c fills the gap between the connector sealing surface 1h and the lower bottom plate sealing surface 5b, or the lower sealant 5c is not coated between the lower bottom plate sealing surface 5b and the connector shell 1. The above structure proposes an improved technical solution to address the deficiencies in the existing technology. When the structure is set, as shown in FIG. Figure 2 、 Figure 3 and Figure 4As shown, the connector housing 1 includes functional features 1a-1n. 1a and 1b are connector openings for electrical connection to the wiring harness connector. The first upper flange surface 1c provides a clearance fit with the outer rib of the ECU upper housing 4. The second upper flange surface 1d interlocks with the upper housing groove of the ECU upper housing. The groove 1e interlocks with the inner rib of the ECU upper housing. The connector sealing rib 1f interlocks with the sealing groove of the ECU upper housing. When the ECU is sealed, sealant is applied between the connector sealing rib 1f and the upper housing groove (upper housing sealing groove) of the ECU upper housing to achieve a sealed connection and optimal sealing. The connector sealing rib 1f has a simple U-shaped path, with two slopes at an angle of 120°-130° to the horizontal. This gentle angle ensures stable retention of the sealant on the slope when applied. The lower flange surface 1g interlocks with the lower base plate rib of the ECU lower housing. The connector sealing surface 1h provides a clearance fit with the sealing surface of the ECU lower base plate. When the ECU adopts the sealing type, the lower sealant is added between the connector sealing surface 1h and the lower base plate sealing surface to make the two components sealed and connected to achieve the best sealing effect. A first guide positioning post 1i and a second guide positioning post 1j are provided on the connector housing. When the connector housing is assembled with the PCBA, they are used to smoothly guide the PCBA and achieve precise positioning, so as to achieve smooth crimping between the PCBA and the connector. The diameters of the first guide positioning post 1i and the second guide positioning post 1j are different, and they cooperate with the positioning holes of the PCBA. The purpose is to prevent the PCBA from being installed upside down when it is installed into the connector, so as to avoid damage to the PCBA during crimping, thereby playing a physical anti-mistake effect. The first guide positioning hole 1k of the connector is a positioning circular hole, which is used for rough guiding positioning when the connector is installed into the upper housing of the ECU. The second guide positioning hole 1m of the connector is a positioning elongated circular hole, which is used for rough guiding positioning when the connector is installed into the upper housing of the ECU. The first guide positioning hole 1k of the connector and the second guide positioning hole 1m of the connector are a combination of a circular hole and an elongated circular hole design, which plays a role in avoiding over-positioning. The chamfer 1n of the lower flange is used to smoothly slide the lower base plate of the ECU into the required position when it is installed. The beneficial effects of the structure of the present utility model are as follows: (1) High protection compatibility: The connector has a reserved sealing feature. When no sealant is added, the multi-level matching of the feature forms a bottom-up, countercurrent, and multi-level complex waterproof path, achieving the waterproof requirements of IPX2, IPX3, and IPX4, and meeting the low protection requirements; when the sealing strip is added, a sealed connection is formed between the components, achieving the sealing and waterproof requirements of IPX7 and IPX8, and meeting the high protection requirements. (2) High manufacturability: The relevant protection matching features or sealing features are simple and easy to form, simple to assemble, and highly reliable, without the need for expensive manufacturing or assembly processes.(3) Precise guidance and positioning: the connector adopts a positioning mode of a guide positioning column and a guide positioning hole (a round hole + an oblong hole), and when assembled with the ECU shell, a step-by-step guide positioning mode from coarse guidance to fine guidance is used, which not only ensures smooth and accurate guidance and positioning, but also avoids the problem of over-positioning. The automobile connector with compatibility protection provided by the utility model is based on compatibility protection design, realizes that the same connector can meet different levels of protection requirements according to actual application, solves the problems of waste caused by applying a high protection level connector to a low requirement vehicle and the problem that a low protection level connector cannot be applied to a high requirement vehicle, so that the connector can be compatibly applied to different automobile ECUs and other products according to different requirements.

[0035] The automobile connector with compatibility protection also includes a pin positioning plate 2, the connector shell 1 is provided with a pin 3, the pin 3 is positioned by the pin positioning plate 2, and the connector shell 1 is provided with a connector first connecting frame opening 1a and a connector second connecting frame opening 1b. The above structure, as shown in the schematic, Figure 1 The connector of the utility model includes a connector shell 1, a pin positioning plate 2 and a pin 3. The pin positioning plate 2: in terms of ECU product assembly, through the relevant guide positioning features on the pin positioning plate 2, the guide positioning feature assembly effect with the ECU upper shell 4 can be realized. The pin 3: provided close to the printed circuit board (PCBA) end, after the printed circuit board (PCBA) and the pin 3 are crimped and assembled, electrical connection with the PCBA is realized; at the frame opening end, the pin 3 extends out of the connector shell frame opening part and is engaged with the wire harness connector terminal to form electrical connection.

[0036] The connector includes a connector shell, the ECU shell includes an ECU upper shell and an ECU lower shell bottom plate, the connector shell 1 is provided with a first positioning convex part 1o and a second positioning convex part 1p, the connector guide positioning hole includes a connector first guide positioning hole 1k and a connector second guide positioning hole 1m, the first positioning convex part 1o is provided with a connector first guide positioning column 1i and a connector first guide positioning hole 1k, and the second positioning convex part 1p is provided with a connector second guide positioning column 1j and a connector second guide positioning hole 1m.

[0037] The pin positioning plate 2 on the positioning plate guide positioning hole, the positioning plate guide positioning hole includes two positioning plate first guide positioning holes 2a and two positioning plate second guide positioning holes 2b, the printed circuit board 6 is provided with a circuit board guide positioning hole 6a, and the circuit board guide positioning hole 6a includes a circuit board first guide positioning hole and a circuit board second guide positioning hole. The above structure, as shown in the schematic, Figure 5As shown, the pin positioning plate 2 includes features such as the first guide positioning hole 2a and the second guide positioning hole 2b. The first guide positioning hole 2a is a circular positioning hole for the pin positioning plate, superimposed on the first guide positioning hole 1k of the connector, and is used for rough guidance and positioning when the connector is installed in the ECU upper shell. The first guide positioning hole 2a is slightly smaller than 1k to avoid the two holes intersecting and affecting the guidance and positioning function. The second guide positioning hole 2b is an oblong positioning hole for the pin positioning plate, superimposed on the first guide positioning hole 1m of the connector, and is used for rough guidance and positioning when the connector is installed in the ECU upper shell. The second guide positioning hole 2b is slightly smaller than the first guide positioning hole of the connector to avoid the two holes intersecting and affecting the guidance and positioning function. The first guide positioning hole 2a and the second guide positioning hole 2b of the positioning plate are combined into a circular hole and an elongated circular hole design to avoid over-positioning.

[0038] The ECU upper housing 4 is provided with upper housing guide and positioning columns 4f, which include a first upper housing guide and positioning column and a second upper housing guide and positioning column.

[0039] The thickness of the connector sealing rib 1f is smaller than the width of the upper shell sealing groove 4a. After the connector and the upper shell are assembled, the upper sealant 4e is squeezed to fill the gap between the two components in an N-shaped filling.

[0040] When the automotive connector is connected to the ECU upper housing 4, the upper housing outer rib 4c rests against the first upper flange surface 1c, the second upper flange surface 1d fits within the upper housing groove 4d, the upper housing inner rib 4b fits within the connector groove 1e, the connector sealing rib 1f fits within the upper housing sealing groove 4a, and the upper housing guide and positioning post 4f passes through a connector guide hole, a positioning plate guide hole, and a printed circuit board guide hole 6a, in sequence. When the automotive connector is connected to the ECU lower housing 5, the lower flange surface 1g of the lower portion of the connector housing 1 rests against the ECU lower housing base plate 5.

[0041] The connector housing 1 is provided with an external mating fold 1q at its lower portion. This structure, through the provision of the external mating fold 1q, prevents overflow of the lower sealant. The diameter of the positioning plate guide hole is smaller than the diameter of the first guide hole, and the diameter of the printed circuit board guide hole is smaller than the diameter of the positioning plate guide hole.

[0042] In the structure of the present invention, connector housing 1: Regarding ECU product assembly, the relevant guiding and positioning features on the connector housing enable precise guiding and positioning assembly with both the PCBA and the ECU upper housing. In terms of application, connector frame openings 1a & 1b are used for electrical connection to the wiring harness connector. The connector housing achieves waterproof and other protective functions by cooperating with the ECU upper housing and lower base plate. Depending on the protection requirements, the interlaced coordination of relevant features can achieve IPX2, IPX3, and IPX4 waterproof requirements. Furthermore, IPX7 and IPX8 waterproof requirements can be achieved by adding sealant between the relevant sealing features.

[0043] The working principle of the structure of the utility model is as follows:

[0044] like Figure 6 The diagram shows the assembly relationship between the connector housing and the PCBA. Figure 6 In the figure, the chamfers of the first guide positioning post 1i and the second guide positioning post 1j of the connector can enable the PCBA to be smoothly introduced and the crimping assembly to be completed during the crimping process, thereby realizing electrical connection with the PCBA. The first guide positioning post 1i and the second guide positioning post 1j of the connector adopt different diameters, which respectively cooperate with the printed board guide positioning holes of the PCBA, thereby realizing precise positioning during the crimping process and preventing the PCBA from being placed upside down physically, thereby avoiding the risk of damage to the PCBA and connector crimping due to placement upside down.

[0045] like Figure 7 and Figure 8 As shown, it shows the assembly relationship between the connector housing 1 and the ECU upper housing 4 after the connector housing and the PCBA are crimped and assembled. Figure 8 In the process of assembling the module after the connector 1 and PCBA6 are crimped onto the ECU upper shell 4, the upper shell guide positioning column will sequentially pass through the first guide positioning hole 1k of the connector and the second guide positioning hole 1m of the connector, the first guide positioning hole 2a of the positioning plate or the second guide positioning hole 2b of the positioning plate to achieve rough guide introduction, and then pass through the guide positioning hole of the positioning plate of the PCBA to achieve precise introduction and positioning of the assembly; the diameter of the first guide positioning hole 2a of the positioning plate and the second guide positioning hole 2b of the positioning plate are slightly smaller than the diameter of the first guide positioning hole 1k of the connector and the second guide positioning hole 1m of the connector, and the diameter of the guide positioning hole of the PCBA is slightly smaller than the diameter of the pin positioning plate positioning hole 2a or 2b, so as to realize the introduction process from rough guidance to fine guidance in sequence during the assembly process.

[0046] like Figure 9 and Figure 10 As shown in the figure, it shows the assembly relationship between the connector and the ECU upper housing. Figure 10As shown, the connector's first upper flange 1c is spaced apart from the outer ribs of the upper housing; the second upper flange 1d interlocks with the grooves of the ECU upper housing; the connector groove 1e interlocks with the inner ribs of the ECU upper housing; and the connector sealing rib 1f interlocks with the sealing grooves of the upper housing. This assembly creates a complex, multi-stage, countercurrent waterproof path from bottom to top, meeting IPX2, IPX3, and IPX4 waterproofing requirements without the need for additional seals.

[0047] like Figure 11 and Figure 12 As shown, it shows the assembly relationship between the connector and the lower base plate of the ECU lower housing. Figure 12 As shown, the connector lower flange 1g and the lower baseplate ribs interlock, while the connector sealing surface 1h is loosely fitted with the sealing surface of the ECU lower baseplate. This assembly creates a complex, multi-stage, countercurrent waterproof path from bottom to top, meeting IPX2, IPX3, and IPX4 waterproofing requirements without the need for additional seals.

[0048] The above-mentioned connector features and the matching relationship with the ECU housing can form a complex, reverse waterproof path from bottom to top, which can meet the waterproof requirements of IPX2, IPX3 and IPX4 without adding additional seals (sealing strips or gaskets, etc.).

[0049] If higher waterproof requirements are required, sealing strips can be added between the sealing surfaces of components and between the sealing ribs and the sealing surfaces to achieve higher waterproof requirements. Figure 13 As shown, in Figure 10 On this basis, add sealant, the connector sealing rib 1f and the upper shell sealing groove form a fully sealed connection, and water cannot pass between the connector and the ECU shell. Figure 14 As shown, in Figure 12 On the basis, add the lower sealant, the connector sealing surface 1h and the ECU bottom plate sealing surface form a fully sealed connection, and water cannot pass between the connector and the ECU housing. Figure 13 and Figure 14 A sealed connection is formed between the connector, the ECU upper housing and the ECU lower base, thus achieving the waterproof protection requirements of IPX7 or IPX8.

[0050] The automotive connector with compatibility protection described in this utility model comprises a connector housing 1 comprising a first connection frame opening 1a and a second connection frame opening 1b for electrically connecting to a wiring harness connector. A first upper flange surface 1c provides clearance fit within the outer rib of the ECU upper housing 4; a second upper flange surface 1d interlocks with the upper housing groove of the ECU upper housing; a connection groove 1e interlocks with the inner rib of the ECU upper housing; and a connector sealing rib 1f interlocks with the sealing groove of the ECU upper housing. When the ECU is sealed, sealant is applied between the connector sealing rib 1f and the upper housing groove (upper housing sealing groove) of the ECU upper housing to achieve an optimal sealing effect. The connector sealing rib 1f has a simple U-shaped path, with two slopes forming an angle of 120°-130° with the horizontal. This gentle angle ensures stable retention of the sealant on the slope when applied. The lower flange surface 1g is interlaced with the ribs of the lower baseplate of the ECU lower housing; the connector sealing surface 1h is clearance-fitted with the sealing surface of the ECU lower baseplate. If the ECU is sealed, a lower sealant is applied between the connector sealing surface 1h and the sealing surface of the lower baseplate to achieve a hermetically sealed connection between the two components and achieve optimal sealing. A first guide positioning post 1i and a second guide positioning post 1j are provided on the connector housing. When the connector housing is assembled with the PCBA, they are used to smoothly guide the PCBA and achieve precise positioning, so as to achieve smooth crimping between the PCBA and the connector. The diameters of the first guide positioning post 1i and the second guide positioning post 1j are different, and they cooperate with the positioning holes of the PCBA. The purpose is to prevent the PCBA from being installed upside down when it is installed into the connector, so as to avoid damage to the PCBA during crimping, thereby playing a physical anti-mistake effect. The first guide positioning hole 1k of the connector is a positioning circular hole, which is used for rough guiding positioning when the connector is installed into the upper housing of the ECU. The second guide positioning hole 1m of the connector is a positioning elongated circular hole, which is used for rough guiding positioning when the connector is installed into the upper housing of the ECU. The first guide positioning hole 1k of the connector and the second guide positioning hole 1m of the connector are a combination of a circular hole and an elongated circular hole design, which plays a role in avoiding over-positioning. The chamfer 1n of the lower flange is used to smoothly slide the lower base plate of the ECU into the required position when it is installed. The beneficial effects of the structure of the present utility model are as follows: (1) High protection compatibility: The connector has a reserved sealing feature. When no sealing strip is added, the multi-level matching of the feature forms a bottom-up, countercurrent, and multi-level complex waterproof path, achieving the waterproof requirements of IPX2, IPX3, and IPX4, and meeting the low protection requirements; when the sealing strip is added, a sealed connection is formed between the components, achieving the sealing and waterproof requirements of IPX7 and IPX8, and meeting the high protection requirements. (2) High manufacturability: The relevant protection matching features or sealing features are simple and easy to form, simple to assemble, and highly reliable, without the need for expensive manufacturing or assembly processes.(3) Precise guidance and positioning: The connector adopts a guidance positioning column and a guidance positioning hole (round hole + oblong hole) positioning method. When assembled with the ECU housing, a step-by-step guidance positioning method from coarse guidance to fine guidance is used to ensure smooth and precise guidance positioning and avoid the problem of over-positioning.

[0051] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An automotive connector with compatibility protection, characterized by: The outer ring of the connector housing (1) is provided with a first upper flange surface (1c) and a second upper flange surface (1d), and the outer ring of the connector housing (1) is also provided with a connector sealing rib (1f), and a connector groove (1e) is formed between the connector sealing rib (1f) and the second upper flange surface (1d). The ECU upper housing (4) is provided with an upper housing sealing groove (4a), an upper housing inner rib position (4b), and an upper housing outer rib position (4c), and an upper housing groove (4d) is formed between the upper housing inner rib position (4b) and the upper housing outer rib position (4c). A sealant (4e) is applied in the upper housing groove (4d), and after the ECU upper housing (4) is assembled, the sealant (4e) is filled. The gap between the connector sealing rib (1f) and the upper shell groove (4d) is filled, or the upper shell groove (4d) is not coated with the upper sealant (4e); a lower flange surface (1g) is provided at the lower portion of the connector shell (1), a lower bottom plate rib position (5a) and a lower bottom plate sealing surface (5b) are provided on the ECU lower shell bottom plate (5), and a lower sealant (5c) is coated on the lower bottom plate sealing surface (5b); after the ECU lower shell bottom plate (5) is assembled, the lower sealant (5c) fills the gap between the connector sealing surface (1h) and the lower bottom plate sealing surface (5b), or the lower sealant (5c) is not coated between the lower bottom plate sealing surface (5b) and the connector shell (1).

2. The automotive connector with compatibility protection according to claim 1, characterized in that: The automotive connector with compatibility protection further comprises a pin positioning plate (2), a pin (3) is provided on the connector housing (1), the pin (3) is positioned by the pin positioning plate (2), and a first connector connection frame opening (1a) and a second connector connection frame opening (1b) are provided on the connector housing (1).

3. The automotive connector with compatibility protection according to claim 1, characterized in that: The connector housing (1) is provided with a first positioning protrusion (1o) and a second positioning protrusion (1p); the connector guide positioning hole comprises a first connector guide positioning hole (1k) and a second connector guide positioning hole (1m); the first positioning protrusion (1o) is provided with a first connector guide positioning column (1i) and a first connector guide positioning hole (1k); and the second positioning protrusion (1p) is provided with a second connector guide positioning column (1j) and a second connector guide positioning hole (1m).

4. The automotive connector with compatibility protection according to claim 2, characterized in that: The pin positioning plate (2) is provided with positioning plate guide holes, which include two first positioning plate guide holes (2a) and two second positioning plate guide holes (2b). The printed circuit board (6) is provided with circuit board guide holes (6a), which include first circuit board guide holes and second circuit board guide holes.

5. The automotive connector with compatibility protection according to claim 1, characterized in that: An upper housing guide positioning column (4f) is provided on the ECU upper housing (4), and the upper housing guide positioning column (4f) comprises an upper housing first guide positioning column and an upper housing second guide positioning column.

6. The automotive connector with compatibility protection according to claim 1 or 2, characterized in that: The thickness of the connector sealing rib (1f) is smaller than the width of the upper shell sealing groove (4a), and the upper sealant (4e) is squeezed to fill the gap between the two components after the connector and the upper shell are assembled, forming an N-shaped filling.

7. The automotive connector with compatibility protection according to claim 4, characterized in that: When the automobile connector is connected to the ECU upper housing (4), the upper housing outer rib (4c) abuts against the first upper flange surface (1c), the second upper flange surface (1d) is embedded in the upper housing groove (4d), the upper housing inner rib (4b) is embedded in the connector groove (1e), the connector sealing rib (1f) is embedded in the upper housing sealing groove (4a), and the upper housing guide positioning column (4f) passes through a connector guide positioning hole, a positioning plate guide positioning hole, and a printed circuit board guide positioning hole (6a) in sequence.

8. The automotive connector with compatibility protection according to claim 1, characterized in that: When the automobile connector is connected to the ECU upper housing (4), the lower flange surface (1g) at the lower portion of the connector housing (1) abuts against the ECU lower housing bottom plate (5).

9. The automotive connector with compatibility protection according to claim 1, characterized in that: An external matching folded edge (1q) is provided at the lower portion of the connector housing (1).

10. The automotive connector with compatibility protection according to claim 4, characterized in that: The diameter of the guide positioning hole of the positioning plate is smaller than the diameter of the first guide positioning hole, and the diameter of the guide positioning hole of the printed circuit board is smaller than the diameter of the guide positioning hole of the positioning plate.

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