Automobile connector with compatibility protection

Abstract

The invention 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 sealant (5c), the lower bottom plate sealing surface (5b) is coated with a lower sealant (5c), and after the ECU lower 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 the compatibility protection function, protection requirements of different levels are met according to actual 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 invention 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 automobile industry, the terminal use or purpose of automobiles has become diversified, and there are different requirements for the selection of automobile connectors. For automobiles with a good use environment or conventional driving purposes, an automobile electronic control unit equipped with a connector with a low protection level (IPX2, IPX3 or IPX4 waterproof level) can meet the protection requirements; for automobiles with a poor use environment or unconventional driving (off-road, wading, etc.), an automobile electronic control unit equipped with a connector with a higher protection level (IPX7 or IPX8 waterproof level) is required. At present, traditional automobile connectors are often not compatible with high and low protection level requirements at the same time. That is, when a connector with a high protection level is applied to a low-requirement model (not requiring an excessively high protection level), it will cause problems of excessive cost and waste of resources; a connector with a low protection level cannot be applied to a high-requirement model (requiring a high protection level) to meet the protection needs.

[0003] There is a technology named "an automobile connector" and the publication (announcement) number is "CN214957539U" in the prior art. This technology relates to the field of automobile connector technology, and in particular to an automobile connector. The automobile connector includes a main body, the main body has a first end face and a second end face for installation and fixing with a designated part, the main body has at least one slot with an opening located at the first end face, and the main body also has a through hole with an opening located at the second end face, and the through hole is connected to the slot; a connecting terminal, the connecting terminal has a first end and a second end, the first end of the connecting terminal is arranged in the slot, the second end of the connecting terminal passes through the through hole, the first end of the connecting terminal is used to electrically connect with a plug inserted into the slot, and the second end of the connecting terminal is used to electrically connect with a circuit board of the terminal; a waterproof ring, the waterproof ring is arranged at the outer edge of the slot, and the gap between the main body and the designated part is isolated by the waterproof ring during installation, so that the automobile connector achieves a waterproof effect. However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the invention

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

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

[0006] The present invention is an automobile connector with compatibility protection. The outer ring of the connector shell is provided with a first upper flange surface and a second upper flange surface. The outer ring of the connector shell is also provided with a connector sealing rib. A connector groove is formed between the connector sealing rib and the second upper flange surface. The ECU upper shell is provided with an upper shell sealing groove, an upper shell inner rib position, and an upper shell outer rib position. An upper shell groove is formed between the upper shell inner rib position and the upper shell outer rib position. An upper sealant is applied in the upper shell groove. 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 applied in the upper shell groove; a lower flange surface is provided at the lower part of the connector shell, and a lower bottom plate rib position and a lower bottom plate sealing surface are provided on the bottom plate of the ECU lower shell. A lower sealant is applied on the lower bottom plate sealing surface. 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 applied between the lower bottom plate sealing surface and the connector shell.

[0007] The automobile connector with compatibility protection also includes a pin positioning plate, pins are arranged on the connector shell, and a first connector connection frame opening and a second connector connection frame opening are arranged on the connector shell.

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

[0010] The upper housing body of the ECU is provided with upper housing body guiding and positioning columns, and the upper housing body guiding and positioning columns include upper housing body first guiding and positioning columns and upper housing body second guiding and positioning columns.

[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 parts in an N-shaped filling.

[0012] When the automobile connector is connected to the ECU upper shell, the outer rib of the upper shell is against the first upper flange surface, the second upper flange surface is embedded in the upper shell groove, the inner rib of the upper shell is embedded in the connector groove, the connector sealing rib is embedded in the upper shell sealing groove, and the upper shell 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 bottom plate of the ECU.

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

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

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

[0017] The automotive connector with compatibility protection described in the present invention, the connector housing includes a first connection frame opening and a second connection frame opening of the connector, which is used to realize electrical connection with the wiring harness connector; the first upper flange surface is gap-matched with the outer rib position of the ECU upper housing; the second upper flange surface 1d is staggered with the upper housing groove of the ECU upper housing; the connector groove is staggered with the inner rib position of the ECU upper housing; the connector sealing rib is staggered with the ECU upper housing sealing groove. When the ECU adopts a sealing type, the two parts are sealed and connected by applying a seal in the upper housing groove of the ECU upper housing to achieve the best sealing effect; the path of the connector sealing rib is U-shaped, the path is simple, and the angle between the two slope directions and the horizontal is 120°-130°. This relaxed angle can ensure the stable retention of the sealant on the slope when applying the sealant. The lower flange surface is staggered with the lower bottom plate rib position of the ECU lower housing; the connector sealing surface is gap-matched with the sealing surface of the lower bottom plate of the ECU lower housing. When the ECU adopts the sealing type, the lower sealant is added between the connector sealing surface and the lower bottom plate sealing surface to make the two parts sealed and connected to achieve the best sealing effect. The connector housing is provided with the first guide positioning column and the second guide positioning column of the connector. When the connector housing is assembled with the PCBA, they are used to smoothly introduce the PCBA and achieve precise positioning, so as to achieve smooth crimping of the PCBA and the connector; the diameters of the first guide positioning column and the second guide positioning column of the connector are different, and they are matched with the positioning holes of the PCBA accordingly, so as to prevent the PCBA from being installed upside down when the PCBA is installed in the connector, and to avoid damage during crimping of the PCBA, so as to play a physical fool-proofing role; the first guide positioning hole of the connector is a positioning circular hole, which is used for rough guiding positioning when the connector is installed in the upper housing of the ECU; the second guide positioning hole of the connector is a positioning oblong hole, which is used for rough guiding positioning when the connector is installed in the upper housing of the ECU; the first guide positioning hole of the connector and the second guide positioning hole 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 of the lower flange is used for smooth sliding in when the lower bottom plate of the ECU is installed. The beneficial effects of the structure of the present invention are: (1) High protection compatibility: The connector has reserved sealing features. When no sealing strip is added, a multi-level complex waterproof path from bottom to top, countercurrent, and multi-level is formed through the multi-level matching of the features, 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 processes or assembly processes.(3) Precise guiding and positioning: The connector adopts a positioning method of guiding and positioning columns and guiding and positioning holes (round hole + oblong hole). When assembled with the ECU housing, a step-by-step guiding and positioning method from coarse guiding to fine guiding is used, which not only ensures smooth and precise guiding 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 It is a schematic structural diagram of a connector housing of an automobile connector with compatibility protection according to the present invention;

[0021] Figure 3 It is a schematic structural diagram of a connector housing of an automobile connector with compatibility protection according to the present invention;

[0022] Figure 4 It is a schematic structural diagram of a connector housing of an automobile connector with compatibility protection according to the present invention;

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

[0024] Figure 6 It 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 It is a schematic diagram of the matching principle between the connector housing and the ECU housing of the automotive connector with compatibility protection according to the present invention;

[0026] Figure 8 It is a schematic diagram of the matching principle between the connector housing and the ECU housing of the automotive connector with compatibility protection according to the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the connection between the connector housing of the automotive connector with compatibility protection and the ECU housing according to the present invention;

[0028] Fig.10 It is a structural schematic diagram of the connection between the connector housing of the automotive connector with compatibility protection and the ECU housing according to the present invention;

[0029] Fig.11It 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] Fig.12 It 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] Fig.13 It is a schematic structural diagram of the sealant provided on the automotive connector with compatibility protection according to the present invention;

[0032] Fig.14 It 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 further detailed description of the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various components involved, the function and working principle of each part, etc., through the description of the embodiments with reference to the accompanying drawings:

[0034] As attached Figure 1 As shown, the present invention 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, and a sealant 4e can be applied in the upper housing groove 4d, 4 After assembly, the upper sealant 4e fills up 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 set 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 set 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 bottom plate 5 is assembled, the lower sealant 5c fills up 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 prior art. When the structure is set, such as Figure 2 , Figure 3 and Figure 4As shown, the connector housing 1 includes functional features such as 1a-1n. 1a and 1b are connector frame openings, which are used to achieve electrical connection with the wiring harness connector; the first upper flange surface 1c is gap-matched with the outer rib of the ECU upper housing 4; the second upper flange surface 1d is staggered with the upper housing groove of the ECU upper housing; the groove 1e is staggered with the inner rib of the ECU upper housing; the connector sealing rib 1f is staggered with the sealing groove of the ECU upper housing. When the ECU adopts a sealing type, by adding sealant between the connector sealing rib 1f and the upper housing groove (upper housing sealing groove) of the ECU upper housing, the two components are sealed and connected to achieve the best sealing effect; the path of the connector sealing rib 1f is U-shaped, the path is simple, and the angle between the two slope directions and the horizontal is 120°-130°. This relaxed angle can ensure the stable retention of the sealing strip on the slope when the sealant is used. The lower flange surface 1g is staggered with the lower bottom plate rib of the ECU lower housing; the connector sealing surface 1h is gap-matched with the sealing surface of the lower bottom plate of the ECU. When the ECU adopts a sealing type, by adding lower sealant between the connector sealing surface 1h and the lower bottom plate sealing surface, the two components are 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 introduce 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 accordingly. The purpose is to prevent the PCBA from being installed upside down when it is installed in 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 in the upper housing of the ECU. The second guide positioning hole 1m of the connector is a positioning oblong hole, which is used for rough guiding positioning when the connector is installed in 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 for smoothly sliding the lower base plate of the ECU into the required position when it is installed. The beneficial effects of the structure of the present invention are: (1) High protection compatibility: The connector has reserved sealing features. When no sealant is added, a multi-level complex waterproof path from bottom to top, countercurrent, and multi-level is formed through the multi-level matching of the features, achieving the waterproof requirements of IPX2, IPX3, and IPX4, and meeting the low protection requirements; when a 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 processes or assembly processes.(3) Precise guidance and positioning: The connector adopts a positioning method of guiding and positioning columns and guiding and positioning holes (round holes + oblong holes). 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. The automotive connector with compatibility protection described in the present invention is based on a compatible protection design, so that the same connector can meet different levels of protection requirements according to actual applications, solves the waste problem of high-protection-level connectors applied to low-requirement models and the problem that low-protection-level connectors cannot be applied to high-requirement models, so that it can be compatible with different automotive ECUs and other products according to different needs.

[0035] The automotive connector with compatibility protection further comprises a pin positioning plate 2, a pin 3 is arranged on the connector housing 1, the pin 3 is positioned by the pin positioning plate 2, and a connector first connection frame opening 1a and a connector second connection frame opening 1b are arranged on the connector housing 1. Figure 1 As shown, the connector of the present invention includes a connector housing 1, a pin positioning plate 2 and pins 3. Pin positioning plate 2: In terms of ECU product assembly, the pin positioning plate 2 can be assembled with the guide positioning features of the housing 4 on the ECU through the relevant guide positioning features. Pin 3: It is arranged near the printed circuit board (PCBA) end. After the printed circuit board (PCBA) and the pin 3 are crimped and assembled, the electrical connection with the PCBA is achieved; at the frame mouth end, the pin 3 extends out of the frame mouth part of the connector housing and engages with the wiring harness connector terminal to form an electrical connection.

[0036] The connector includes a connector housing, the ECU housing includes an ECU upper housing and an ECU lower housing base, a first positioning protrusion 1o and a second positioning protrusion 1p are provided on the connector housing 1, the connector guide positioning hole includes a connector first guide positioning hole 1k and a connector second guide positioning hole 1m, a connector first guide positioning column 1i and a connector first guide positioning hole 1k are provided on the first positioning protrusion 1o, and a connector second guide positioning column 1j and a connector second guide positioning hole 1m are provided on the second positioning protrusion 1p.

[0037] The positioning plate guide holes on the pin positioning plate 2 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. Figure 5As shown, the pin positioning plate 2 includes the first guide positioning hole 2a of the positioning plate and the second guide positioning hole 2b of the positioning plate. The first guide positioning hole 2a of the positioning plate is a circular positioning hole of the pin positioning plate, which is superimposed on the first guide positioning hole 1k of the connector, and is used for rough guide positioning when the connector is installed in the upper shell of the ECU. The size of the first guide positioning hole 2a of the positioning plate is slightly smaller than 1k to avoid the two holes from staggering and affecting the guiding and positioning function; the second guide positioning hole 2b of the positioning plate is an oblong positioning hole of the pin positioning plate, which is superimposed on the first guide positioning hole 1m of the connector, and is used for rough guide positioning when the connector is installed in the upper shell of the ECU. The size of the second guide positioning hole 2b of the positioning plate is slightly smaller than the first guide positioning hole of the connector to avoid the two holes from staggering and affecting the guiding and positioning function; the first guide positioning hole 2a of the positioning plate and the second guide positioning hole 2b of the positioning plate are combined into a round hole and an elongated round hole design, which plays a role in avoiding over-positioning.

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

[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 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. When the automobile connector is connected to the ECU lower housing 5, the lower flange surface 1g of the lower part of the connector housing 1 abuts against the ECU lower base plate 5.

[0041] The lower part of the connector housing 1 is provided with an external matching fold 1q. The above structure is used to prevent the lower sealant from overflowing through the setting of the external matching fold 1q. 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, the connector housing 1: in terms of ECU product assembly, the relevant guiding and positioning features on the connector housing can realize accurate guiding and positioning assembly with the PCBA, and can also realize accurate guiding and positioning assembly with the ECU upper housing. In terms of application, the connector frame openings 1a & 1b are used for electrical connection with the harness connector; the connector housing realizes waterproof and other protective functions by cooperating with the ECU upper housing and the lower base plate, and according to the protection requirements, the waterproof requirements of IPX2, IPX3 and IPX4 are realized by staggered cooperation of relevant features, and the waterproof requirements of IPX7 and IPX8 can also be realized by adding sealant between relevant sealing features.

[0043] The working principle of the structure of the present invention 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 and positioning posts 1i and the second guide and positioning posts 1j of the connector can enable the PCBA to be smoothly introduced and crimped during the crimping process to complete the crimping assembly, thereby realizing electrical connection with the PCBA. The first guide and positioning posts 1i and the second guide and positioning posts 1j of the connector adopt different diameters, which respectively cooperate with the printed board guide and 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 the connector due to crimping caused by placing the PCBA 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 to 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 positioning hole 2a or 2b of the pin positioning plate, so as to realize the introduction process from rough guidance to fine guidance in sequence during the assembly process.

[0046] like Fig. 9 and Fig.10 As shown in the figure, it shows the assembly relationship between the connector and the ECU upper housing. Fig.10As shown, the first upper flange surface 1c of the connector is in clearance with the outer rib of the upper shell; the second upper flange 1d is used to interlace with the groove of the upper shell of the ECU; the connector groove 1e is interlace with the inner rib of the upper shell of the ECU; the connector sealing rib 1f is interlace with the sealing groove of the upper shell. Through the above assembly, a multi-level complex waterproof path from bottom to top is formed, which can meet the waterproof requirements of IPX2, IPX3 and IPX4 without additional seals.

[0047] like Fig.11 and Fig.12 As shown in the figure, the assembly relationship between the connector and the lower base plate of the ECU lower housing is shown. Fig.12 As shown in the figure, the connector lower flange 1g and the lower bottom plate ribs are staggered; the connector sealing surface 1h and the ECU lower bottom plate sealing surface are gap-matched. The above assembly forms a multi-level complex waterproof path from bottom to top, which can meet the waterproof requirements of IPX2, IPX3 and IPX4 without additional seals.

[0048] The relevant functional features of the above connectors and the matching relationship with the ECU housing can form a complex, bottom-up reverse waterproof path, which can meet the waterproof requirements of IPX2, IPX3 and IPX4 without adding additional seals (sealing strips or sealing 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. Fig.13 As shown, in Fig.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. Fig.14 As shown, in Fig.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. Fig.13 and Fig.14 A sealed connection is formed between the connector, the ECU upper housing and the ECU lower base plate, thereby achieving the waterproof protection requirements of IPX7 or IPX8.

[0050] The automotive connector with compatibility protection described in the present invention, the connector housing 1 includes a first connection frame opening 1a and a second connection frame opening 1b of the connector, which are used to realize electrical connection with the wiring harness connector; the first upper flange surface 1c is gap-matched with the outer rib position of the ECU upper housing 4; the second upper flange surface 1d is staggered with the upper housing groove of the ECU upper housing; the connection groove 1e is staggered with the inner rib position of the ECU upper housing; the connector sealing rib 1f is staggered with the sealing groove of the ECU upper housing. When the ECU adopts a sealing type, by adding sealant between the connector sealing rib 1f and the upper housing groove (upper housing sealing groove) of the ECU upper housing, the two parts are sealed and connected to achieve the best sealing effect; the path of the connector sealing rib 1f is U-shaped, the path is simple, and the angle between the two slope directions and the horizontal is 120°-130°. This relaxed angle can ensure the stable retention of the sealant on the slope when the sealant is used. The lower flange surface 1g is staggered with the lower bottom plate rib position of the ECU lower housing; the connector sealing surface 1h is gap-matched with the sealing surface of the lower bottom plate of the ECU. When the ECU adopts the sealing type, the lower sealant is added between the connector sealing surface 1h and the lower bottom 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 introduce 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 accordingly. The purpose is to prevent the PCBA from being installed upside down when it is installed in 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 in the upper housing of the ECU. The second guide positioning hole 1m of the connector is a positioning oblong hole, which is used for rough guiding positioning when the connector is installed in 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 for smoothly sliding the lower base plate of the ECU into the required position when it is installed. The beneficial effects of the structure of the present invention are: (1) High protection compatibility: The connector has reserved sealing features. When no sealing strip is added, a multi-level complex waterproof path from bottom to top, countercurrent, and multi-level is formed through the multi-level matching of the features, 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 processes or assembly processes.(3) Precise guiding and positioning: The connector adopts guiding positioning columns and guiding positioning holes (round hole + oblong hole) for positioning. When assembled with the ECU housing, a step-by-step guiding positioning method from coarse guiding to fine guiding is used to ensure smooth and precise guiding positioning and avoid the problem of over-positioning.

[0051] The present invention is described above by way of example 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 protection scope of the present invention.

Claims

1. An automotive connector with compatibility protection, characterized in that: 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 inside 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 with the lower sealing glue (4e), or the upper shell groove (4d) is not coated with the upper sealing glue (4e); a lower flange surface (1g) is provided at the lower part 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 sealing glue (5c) is coated on the lower bottom plate sealing surface (5b); after the ECU lower bottom plate (5) is assembled, the lower sealing glue (5c) fills the gap between the connector sealing surface (1h) and the lower bottom plate sealing surface (5b), or the lower sealing glue (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 arranged 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 arranged on the connector housing (1).

3. The automotive connector with compatibility protection according to claim 1 or 2, 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 connector first guide positioning hole (1k) and a connector second guide positioning hole (1m); the first positioning protrusion (1o) is provided with a connector first guide positioning column (1i) and a connector first guide positioning hole (1k); and the second positioning protrusion (1p) is provided with a connector second guide positioning column (1j) and a connector second guide positioning hole (1m).

4. The automotive connector with compatibility protection according to claim 3, characterized in that: The pin positioning plate (2) is provided with positioning plate guide holes, the positioning plate guide holes comprising two positioning plate first guide holes (2a) and two positioning plate second guide holes (2b); the printed circuit board (6) is provided with circuit board guide holes (6a), the circuit board guide holes (6a) comprising circuit board first guide holes and circuit board second guide holes.

5. The automotive connector with compatibility protection according to claim 1 or 2, 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 or 2, 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 or 2, characterized in that: The lower part of the connector housing (1) is provided with an external matching folded edge (1q).

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

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