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CN118156878A - Connector sealing structure, controller and vehicle - Google Patents

Connector sealing structure, controller and vehicle Download PDF

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Publication number
CN118156878A
CN118156878A CN202410185461.4A CN202410185461A CN118156878A CN 118156878 A CN118156878 A CN 118156878A CN 202410185461 A CN202410185461 A CN 202410185461A CN 118156878 A CN118156878 A CN 118156878A
Authority
CN
China
Prior art keywords
connector
sealing
shell
seal ring
conductive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410185461.4A
Other languages
Chinese (zh)
Inventor
龚其春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Changxing Zhijia Automobile Technology Co ltd
Original Assignee
Suzhou Changxing Zhijia Automobile Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Changxing Zhijia Automobile Technology Co ltd filed Critical Suzhou Changxing Zhijia Automobile Technology Co ltd
Priority to CN202410185461.4A priority Critical patent/CN118156878A/en
Publication of CN118156878A publication Critical patent/CN118156878A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/52Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/523Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/52Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/52Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5216Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/6485Electrostatic discharge protection
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/0026Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0047Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/0026Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0047Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
    • H05K5/0056Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by features for protecting electronic components against vibration and moisture, e.g. potting, holders for relatively large capacitors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/0026Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0069Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having connector relating features for connecting the connector pins with the PCB or for mounting the connector body with the housing
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/06Hermetically-sealed casings
    • H05K5/069Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20436Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
    • H05K7/20445Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing the coupling element being an additional piece, e.g. thermal standoff
    • H05K7/20454Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing the coupling element being an additional piece, e.g. thermal standoff with a conformable or flexible structure compensating for irregularities, e.g. cushion bags, thermal paste
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20845Modifications to facilitate cooling, ventilating, or heating for automotive electronic casings

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The invention discloses a connector sealing structure, a controller and a vehicle. The connector sealing structure includes: an upper shell, a lower shell upper sealing ring and a lower sealing ring; a first mounting groove is formed in the side wall of the upper shell so as to mount an upper sealing ring; the upper sealing ring comprises: a first sealing part which is matched with the shape of the upper end of the connector, and a second sealing part which is connected with the first sealing part; a second mounting groove is formed in the side wall of the lower shell so as to mount the lower sealing ring; the lower sealing ring comprises: a third sealing part which is matched with the shape of the lower end of the connector, and a fourth sealing part which is connected with the third sealing part; the first sealing part is in interference fit with the upper end of the connector, the third sealing ring is in interference fit with the lower end of the connector, and the second sealing part is in interference fit with the fourth sealing part, so that the upper shell, the lower shell and the connector are sealed. On the basis of meeting the required sealing waterproof grade, the product realization cost is reduced.

Description

Connector sealing structure, controller and vehicle
Technical Field
The invention relates to the technical field of connecting devices, in particular to a connector sealing structure, a controller and a vehicle.
Background
With the intelligent development of automobiles, the demand for automatic driving products is increasing. The number of sensors and the working condition complexity are increased sharply, and the high-integration-level high-calculation-force automatic driving domain controller enables the energy consumption of the controller to be larger and larger, so that higher requirements are provided for heat dissipation of the core processing chip. When the electronic component works, the heat productivity of the electronic component is large, and heat needs to be dissipated as soon as possible so as to ensure that the product works normally. In addition, for the automatic driving controller, real-time communication with an external sensor is needed, a large amount of information and algorithms are needed to be rapidly calculated and processed in real time, and a plurality of high-speed high-frequency devices are integrated in the automatic driving controller, so that the automatic driving controller has high electromagnetic shielding requirements.
At present, most automatic driving domain controllers are cooled by water cooling. Water cooling is the most efficient heat dissipation solution at present, but the water cooling solution naturally has the problem of condensation. The working environment of the automobile is severe, and the water temperature of the water cooling controller is asynchronous with the external environment in the environment of-40 ℃ to 85 ℃. Such as: in winter, when the automobile is just started, the temperature of external cooling water is as low as-40 ℃, after the automobile is started, condensation can be formed in the cavity of the PCBA board after the water cooling cavity of the controller flows through cooling liquid at-40 ℃, when the air in the controller is condensed, moisture is reduced, if the external environment moist air continuously supplements into the controller, continuous condensation can be caused in the controller, water accumulation in the controller can be seriously caused, and the water cannot be discharged for a long time. Although the interior of the controller is coated with a three-proofing paint or other water-repellent coating, on the one hand these coatings are not water-repellent for a long period of time and on the other hand quality problems that may exist with the coating result in the device being virtually bare and uncoated. After long-term water accumulation on PCBA (printed circuit board), short circuit and corrosion of devices such as chip pins are caused. In addition, when the temperature of the environment outside the controller is higher than the temperature of the cooling liquid, a large amount of condensation is generated on the controller shell, and if the condensation enters the inside of the shell, the condensation is also unfavorable for the controller. The condensation enters the shell and has a relation with the placing direction of the shell, and the condensation does not fall into the shell through the appearance structural design of the shell of the controller when the non-sealed controller is in a flat lying state. When the controller is required to be arranged vertically due to the arrangement requirement in the vehicle, the waterproof grade of the IPX2 is difficult to meet when the non-sealing controller is arranged vertically, and condensation and water can enter the interior easily through the connector. The common automatic driving controller is mostly a platform product, the same automatic driving controller is used for different vehicle types, and the vertically arranged controller can be arranged at the front position of the front instrument panel of the copilot and is nearest to the radiator of the automobile, so that the lengths of a water cooling pipe and a wire harness can be saved, and the product cost is generally saved. When the controller is designed with sealing measures, the water-cooled controller has waterproof capability, external condensation cannot enter the vertically arranged controller, air convection inside and outside the controller can be reduced to the greatest extent, and the possibility of continuous condensation in the controller is avoided.
Currently, the sealing means at the controller connector include: adopting a waterproof connector, and designing corresponding waterproof characteristics according to the sealing characteristics remained by the waterproof connector so as to realize a sealing mode at the connector; and a common connector is adopted, a side-mounted rubber plate is adopted, and a sealing mode of the controller connector is realized in a mode of mounting screws on the side face through a metal plate cover plate.
Disclosure of Invention
The inventor of the application discovers that the controller adopts a sealing method of a waterproof connector, can realize the waterproof grade of the IPX7 and control the internal condensation amount, but the automatic driving controller is generally arranged in a cockpit, the waterproof grade of the IPX7 is over-designed, and the waterproof connector is high in price, so that the total cost of the product is increased; the controller utilizes the common connector, adopts the side-mounted rubber pad, and through panel beating apron, side-mounted screw's form, realizes the sealed waterproof mode of preventing the condensation in controller connector department, and the structure is complicated, and the part is more, and the assembly is complicated, and technology cost and part cost are higher.
The present invention has been made in view of the above problems, and has as its object to provide a connector sealing structure, a controller and a vehicle which overcome or at least partially solve the above problems.
An embodiment of the present invention provides a connector sealing structure, including: an upper shell, a lower shell upper sealing ring and a lower sealing ring;
A first mounting groove is formed in the side wall of the upper shell so as to mount an upper sealing ring; the upper seal ring comprises: a first sealing part adapted to the shape of the upper part of the connector, and a second sealing part connected to the first sealing part;
a second mounting groove is formed in the side wall of the lower shell so as to mount a lower sealing ring; the lower seal ring includes: a third sealing part adapted to the shape of the lower part of the connector, and a fourth sealing part connected to the third sealing part;
And the first sealing part is in interference fit with the upper part of the connector, the third sealing part is in interference fit with the lower part of the connector, and the second sealing part is in interference fit with the fourth sealing part, so that the upper shell, the lower shell and the connector are sealed.
In an alternative embodiment, the width of the lower seal ring is greater than the width of the upper seal ring, and/or the width of the upper seal ring is 20% -30% of the width of the lower seal ring.
In an alternative embodiment, the upper seal ring and the lower seal ring are conductive rubber seal rings.
In an alternative embodiment, the content of the conductive medium in the conductive rubber sealing ring is determined according to a sealing index of the connector, and the sealing index comprises: and in the clamping state of the upper shell and the lower shell, the leakage amount of electromagnetic signals in the shell is lower than a preset leakage amount threshold value, and/or the interference amount of electromagnetic signals entering the shell is lower than a preset interference amount threshold value.
In an alternative embodiment, a conductive part is extended from the upper end of the upper sealing ring, the conductive part is in contact with the metal ground of the connector, and one end of the conductive part is abutted with the upper shell.
In an alternative embodiment, the conductive parts are arranged in a one-to-one correspondence with the connectors.
In an alternative embodiment, the compression amount of the upper seal ring and the lower seal ring is 15% -25% in a state that the upper housing is engaged with the lower housing.
Based on the same inventive concept, the embodiment of the invention also provides a controller, which comprises a circuit board, a connector and the connector sealing structure;
The circuit board is arranged in the cavity between the upper shell and the lower shell, and the connector is arranged at one end edge of the circuit board.
In an alternative embodiment, a conductive sealant or conductive seal ring is further disposed between the upper housing and the lower housing.
Based on the same inventive concept, an embodiment of the present invention further provides a vehicle including: the controller described above.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
According to the connector sealing structure provided by the embodiment of the invention, the mounting grooves are designed on the side walls of the upper shell and the lower shell based on the shape of the connector, so that the assembly function of the upper sealing ring and the lower sealing ring is realized, the first sealing part of the upper sealing ring is in interference fit with the upper part of the connector of the lower sealing ring, the third sealing part of the lower sealing ring is in interference fit with the lower part of the connector, and the second sealing part is in interference fit with the fourth sealing part, so that the sealing of the upper shell, the lower shell and the connector and the sealing of the upper shell and the lower shell at the connector end are realized, the requirement of a waterproof grade can be met when the connector sealing structure is placed in the vertical direction, the problem that excessive condensation is generated by air convection inside and outside the shell is reduced, and the reliability of the whole structure is improved; compared with the existing structure of designing side-mounted rubber and sheet metal cover plates and screwing by screws, the embodiment of the invention simplifies the sealing structure of the connector, reduces the overall size of the sealing ring, only needs to embed the sealing ring into the corresponding mounting groove when the sealing ring is mounted, reduces the assembly difficulty of the sealing ring, can save side-mounted equipment, side-mounted tools and side-mounted time of the sealing ring, reduces the production cost of the sealing structure and improves the economic benefit.
In the connector sealing structure provided by the embodiment of the invention, the conductive part is extended at the upper end of the upper sealing ring and is in contact with the metal ground of the connector, and one end of the conductive part is abutted against the upper shell, so that static electricity can be conducted out in time through the conductive part when the controller releases static electricity, interference of the static electricity release on a connector signal and damage to a chip inside the connector are reduced, and compared with the existing mode of independently arranging conductive foam between the connector and the shell, the installation cost and the installation procedure of the conductive foam are reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a prior art connector seal structure;
Fig. 2 is a schematic diagram of a structure in which conductive foam is provided to realize conduction between the metal ground and the upper housing of the connector in the prior art;
fig. 3 is a schematic structural diagram of an electromagnetic shielding member arranged on a circuit board to perform electromagnetic shielding in the prior art;
FIG. 4 is a schematic view of a sealing structure of a connector according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the corresponding structures of the upper housing and the upper seal ring in the embodiment of the invention;
FIG. 6 is a schematic view of a partial enlarged structure of a first mounting groove according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the corresponding structures of the lower housing and the lower seal ring according to the embodiment of the invention;
FIG. 8 is a schematic view of a partial enlarged structure of a second mounting groove according to an embodiment of the present invention;
FIG. 9 is a schematic view of a connector according to an embodiment of the present invention in a state of being wrapped by an upper seal and a lower seal ring;
FIG. 10 is a schematic view of a portion of an upper seal ring with a conductive portion extending outward therefrom in accordance with an embodiment of the present invention;
FIG. 11 is a partially enlarged schematic illustration of the conductive portion abutting against the upper housing according to the embodiment of the invention;
Fig. 12 is a partially enlarged schematic illustration of the conductive portion abutting against the ground of the connector according to the embodiment of the invention;
Fig. 13 is a schematic view of a connector sealing structure according to an embodiment of the present invention, including a first shielding wall.
Reference numerals illustrate:
1. An upper housing; 2. an upper sealing ring; 3. a lower sealing ring; 4. a lower housing; 5. a circuit board; 6. a conductive seal ring; 7. a heat-conducting adhesive; 8. a screw; 9. a connector; 10. a first shielding wall;
11. A first mounting groove; 21. a first sealing part; 22. a second sealing part; 23. a conductive portion; 31. a third sealing part; 32. a fourth sealing part; 41. a second mounting groove; 91. the metal ground of the connector.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The inventor of the present application found that the existing connector sealing structure can realize the waterproof grade of IPX7 and control the condensation amount inside the housing by using the waterproof connector, but the autopilot controller is generally arranged in the cockpit, the waterproof grade of IPX7 is over-designed, and the overall cost of the product is increased due to the expensive waterproof connector; the other common connectors have no unified waterproof type, namely, when the common connector is used, the sealing structure at the connector is required to be designed by a person in the related field according to the needs, so that the design difficulty and cost of the sealing structure of the connector are relatively high, the sealing mode of the conventional common connector mainly passes through the sheet metal side cover plate and the side mounting screw is used for fixing, so that the sealing waterproof and anti-condensation function at the connector is realized, the structure is shown by referring to the structure shown in the figure 1, and the sealing mode has the problems of complex structure, more parts, complex assembly and higher process cost and part cost.
Further, when the controller performs ESD discharge, the connector, especially the high-speed connector, is easily affected by ESD, so that the connector signal is disturbed, and the internal chip may be damaged, and it is generally required to conduct the metal ground of the connector with the housing, so that the instantaneous static electricity can be conducted out in time. Referring to fig. 2, in the prior art, a conductive foam is generally disposed between a metal ground of a connector and a housing to conduct between the two; however, this solution has the problems of more and dispersed parts and high assembly cost.
Meanwhile, because the controller needs to communicate with the outside of a power supply and an electric signal, in order to enable the controller to have a good electromagnetic shielding effect, a PCBA board of the controller is integrally wrapped by a shell in the prior art, and conductive rubber is assembled between an upper shell and a lower shell or cured conductive rubber after spot forming is performed for electromagnetic shielding; meanwhile, in order to achieve a better electromagnetic shielding effect, besides the first shielding wall arranged inside the shell, referring to fig. 3, an electromagnetic shielding is generally performed by designing conductive rubber, conductive foam strips or antistatic foam and the like on a PCBA board at a position of a few centimeters behind (close to the inside of the shell) the connector so as to seal most electromagnetic leakage signals, but in the prior art, no corresponding electromagnetic shielding scheme is arranged at the connector, and electromagnetic leakage can often occur at the connector.
In summary, the connector sealing structure and the controller in the prior art have the following disadvantages:
1) The existing waterproof connector is adopted to realize the integral sealing scheme of the product, so that the problem of continuous condensation caused by convection of air inside and outside the product is solved, but the waterproof connector is high in price, and the waterproof connector is a cost waste for the IPX7 waterproof grade which is not necessary in the automobile cockpit.
2) The existing scheme of not sealing the connector end cannot realize the waterproof grade requirement (generally IPX 2) and the anti-condensation effect of the product in the vertical direction.
3) The existing waterproof condensation-preventing scheme adopting the common connector and side-mounted rubber and cover plates has more parts and excessively complex working procedures.
4) The traditional connector adopts the scheme that the conductive foam is adopted to conduct the connector and the shell, so that the used parts are more, and the installation procedure is complex.
5) The existing electromagnetic shielding scheme adopts a plurality of conductive foam strips and conductive foam strips to carry out electromagnetic shielding in the shell, so that the product cost is high, and no effective electromagnetic shielding means exists for the connector end, so that the connector end is extremely easy to generate electromagnetic leakage or weak in anti-interference capability.
In order to solve the problems in the prior art, the embodiment of the invention provides a connector sealing structure, a controller and a vehicle.
The connector sealing structure provided by the embodiment of the invention, referring to fig. 4 to 9, includes: an upper shell 1, a lower shell 4, an upper sealing ring 2 and a lower sealing ring 3;
a first mounting groove 11 is formed in the side wall of the upper shell 1 to mount the upper sealing ring 2; the upper seal ring 2 includes: a first sealing portion 21 adapted to the upper shape of the connector 9, and a second sealing portion 22 connected to the first sealing portion 21;
a second mounting groove 41 is formed on the side wall of the lower housing 4 to mount the lower seal ring 3; the lower seal ring 3 includes: a third seal portion 31 adapted to the shape of the lower portion of the connector 9, and a fourth seal portion 32 connected to the third seal portion 31;
And the first sealing part 21 is in interference fit with the upper part of the connector 9, the third sealing ring is in interference fit with the lower part of the connector 9, and the second sealing part 22 is in interference fit with the fourth sealing part 32 so as to realize the sealing between the upper shell 1, the lower shell 4 and the connector 9.
According to the connector sealing structure provided by the embodiment of the invention, the mounting grooves are designed on the side walls of the upper shell 1 and the lower shell 4 based on the shape of the connector 9, so that the assembly function of the upper sealing ring 2 and the lower sealing ring 3 is realized, the first sealing part 21 of the upper sealing ring 2 is in interference fit with the upper part of the connector 9 of the lower sealing ring 3, the third sealing part 31 of the lower sealing ring 3 is in interference fit with the lower part of the connector 9, and the second sealing part 22 is in interference fit with the fourth sealing part 32, so that the sealing of the upper shell 1 and the lower shell 4 with the connector 9 and the sealing of the upper shell 1 and the lower shell 4 at the connector end are realized, the requirement of a waterproof grade can be met when the connector sealing structure is placed in the vertical direction, the problem that excessive condensation is generated by air convection inside and outside the shell is reduced, and the reliability of the whole structure is improved; compared with the existing structure of designing side-mounted rubber and sheet metal cover plates and screwing by using screws 8, the embodiment of the invention simplifies the sealing structure of the connector, reduces the overall size of the sealing ring, only needs to embed the sealing ring into the corresponding mounting groove when the sealing ring is mounted, reduces the assembly difficulty of the sealing ring, can save side-mounted equipment, side-mounted tools and side-mounted time of the sealing ring, reduces the production cost of the sealing structure and improves the economic benefit.
In an alternative embodiment, the width of the lower sealing ring 3 may be greater than the width of the upper sealing ring 2, preferably the width of the upper sealing ring may be in particular 20% -30% of the width of the lower sealing ring 3, in order to make the sealing effect at the connector 9 better.
Optionally, in a state that the upper housing 1 is engaged with the lower housing 4, the compression amount of the upper seal ring 2 and the lower seal ring 3 is 15% -25%, so as to achieve sufficient sealing between the upper housing 1 and the lower housing 4 and the connector 9, and between the upper housing 1 and the lower housing 4 at the connector end.
Optionally, in this embodiment, the upper seal ring 2 and the lower seal ring 3 are non-conductive rubber seal rings or conductive rubber seal rings. In the state that the sealing ring is a non-conductive sealing ring, the sealing ring mainly plays a role in sealing; in the state that the sealing ring is a conductive sealing ring, the sealing ring can also play a role in electromagnetic shielding; preferably, the upper sealing ring 2 and the lower sealing ring 3 are conductive rubber sealing rings.
Further, under the condition that the upper sealing ring 2 and the lower sealing ring 3 are conductive rubber sealing rings, the content of a conductive medium in the conductive rubber sealing rings is determined according to the sealing index of the connector 9, wherein the sealing index comprises: in the state that the upper shell 1 and the lower shell 4 are clamped, the leakage amount of electromagnetic signals in the shell is lower than a preset leakage amount threshold value, and/or the interference amount of electromagnetic signals entering the shell is lower than a preset interference amount threshold value. The conductive medium can be carbon powder, graphite and the like, the specific type and the dosage of the conductive medium are not particularly limited, and the conductive medium can be selected according to actual needs.
Namely, the connector sealing structure of the present invention, referring to fig. 13, the structure of the upper seal ring 2 and the lower seal ring 3at the outermost connector of the product constitutes a second layer of shielding for electromagnetic shielding together with the first shielding wall 10; the first shielding wall 10 is used for preventing most electromagnetic leakage, and the second shielding layer at the connector 9 is used for preventing residual electromagnetic leakage and electromagnetic waves generated by the circuit of the connector 9. When this structure can save among the prior art electromagnetic shield, adopts electrically conductive bubble silver on the PCBA board of the inside connector 9 rear end of controller casing, or the cotton application amount of static bubble of paster, has saved the design space of PCBA board, has synthesized and has saved product cost. In the structure of the embodiment of the invention, the upper shell 1 and the lower shell 4 are fully sealed at the connector end through the second sealing part 22 and the fourth sealing part 32 of the upper sealing ring 2, so that the resonance effect of equivalent capacitance and resistance caused by the existence of a tiny gap and a contact point between the upper shell 1 and the lower shell 4 at the connector end in the existing structure can be reduced, the problem of electromagnetic leakage is caused, and the electromagnetic shielding effect is improved.
In an alternative embodiment, referring to fig. 10 to 12, the upper end of the upper seal ring 2 is extended with a conductive portion 23, the conductive portion 23 is in contact with the metal ground 91 of the connector, and one end of the conductive portion 23 abuts against the upper housing 1 to reduce the influence of static electricity discharge on the connector 9. Alternatively, the conductive parts 23 are arranged in one-to-one correspondence with the connectors 9, that is, each connector 9 realizes conduction with the upper case 1 through the conductive parts 23 arranged in correspondence therewith.
The upper sealing ring 2 and the extending conductive part 23 thereof can be of an integrally formed structure, the flexibility of conductive rubber is utilized, the shape is specially designed, the connector 9 is fully contacted with the shell, electromagnetic leakage is reduced, damage and damage of ESD to products are reduced, the scheme that the conductive foam is arranged in the prior art to realize the conduction between the metal ground of the connector 9 and the shell is replaced, and the conductive foam parts and the installation cost caused by the conductive foam parts in the prior art are saved.
Based on the same inventive concept, an embodiment of the present invention further provides a controller, as shown in fig. 1, including: a circuit board 5, a connector 9, and the connector sealing structure described above;
Wherein the circuit board 5 is disposed in a cavity between the upper case 1 and the lower case 4, and the connector 9 is disposed at an end edge of the circuit board 5. Wherein, the connection among the upper shell 1, the circuit board 5 and the lower shell 4 can be realized through screws 8.
Further, a conductive sealant or a conductive sealing ring 6 is arranged between the upper shell 1 and the lower shell 4 of the controller; specifically, in order to achieve sealing and electromagnetic shielding effects at the non-connector ends of the upper and lower cases 1 and 4, sealing may be achieved by means of spot conductive sealant or by mounting conductive seal rings 6.
The specific structural form and advantageous effects of the connector sealing structure of the controller in the above embodiment have been described in detail in the embodiment of the connector sealing structure, and will not be described in detail here.
The connector sealing structure and the controller provided by the embodiment of the invention provide a structure which can realize the waterproof capability of a product in the vertical direction by adopting a common non-waterproof connector 9, and can be used for a water-cooling controller adopting the common connector 9; the conductive sealing ring which is vertically combined is designed, on one hand, the connector 9 is wrapped through the first sealing part 21 and the third sealing part 31, on the other hand, the sealing of the upper shell and the lower shell at the non-connector 9 is realized through the second sealing part 22 and the fourth sealing part 32 to block electromagnetic radiation, and the conductive part 23 is designed to enable the metal part of the connector 9 to be conducted with the shell to avoid electrostatic damage of ESD.
In an alternative embodiment, the present invention further provides a vehicle including the controller.
It should be noted that, for the connector sealing structure provided by the embodiment of the invention, the connector sealing structure can be used for an autopilot domain controller product, and also can be used for products in other fields of the automobile industry, such as a cabin domain controller, a central computing unit and the like, and a chip scheme with high calculation force and high performance is adopted; meanwhile, for other industries, such as products of notebooks, mobile phones, game machines and the like, the technical scheme of the invention can be referred to according to industry specifications, and the application field of the connector sealing structure is not particularly limited.
It should be understood that the specific order or hierarchy of steps in the processes disclosed are examples of exemplary approaches. Based on design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment of this invention.
The foregoing description includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, as used in the specification or claims, the term "comprising" is intended to be inclusive in a manner similar to the term "comprising," as interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean "non-exclusive or".

Claims (10)

1. A connector sealing structure, comprising: an upper shell, a lower shell upper sealing ring and a lower sealing ring;
A first mounting groove is formed in the side wall of the upper shell so as to mount an upper sealing ring; the upper seal ring comprises: a first sealing part adapted to the shape of the upper part of the connector, and a second sealing part connected to the first sealing part;
a second mounting groove is formed in the side wall of the lower shell so as to mount a lower sealing ring; the lower seal ring includes: a third sealing part adapted to the shape of the lower part of the connector, and a fourth sealing part connected to the third sealing part;
And the first sealing part is in interference fit with the upper part of the connector, the third sealing part is in interference fit with the lower part of the connector, and the second sealing part is in interference fit with the fourth sealing part, so that the upper shell, the lower shell and the connector are sealed.
2. The connector seal arrangement of claim 1, wherein the width of the lower seal ring is greater than the width of the upper seal ring and/or the width of the upper seal ring is 20% -30% of the width of the lower seal ring.
3. The connector seal of claim 1 wherein said upper seal ring and said lower seal ring are conductive rubber seal rings.
4. The connector sealing structure according to claim 3, wherein the content of the conductive medium in the conductive rubber seal ring is determined according to a sealing index of the connector, the sealing index comprising: and in the clamping state of the upper shell and the lower shell, the leakage amount of electromagnetic signals in the shell is lower than a preset leakage amount threshold value, and/or the interference amount of electromagnetic signals entering the shell is lower than a preset interference amount threshold value.
5. The connector sealing structure according to claim 1, wherein a conductive portion is extended from an upper end of the upper seal ring, the conductive portion is in contact with a metal ground of the connector, and one end of the conductive portion abuts against the upper housing.
6. The connector sealing structure according to claim 5, wherein the conductive portions are provided in one-to-one correspondence with the connectors.
7. The connector sealing structure according to any one of claims 1 to 6, wherein the compression amount of the upper seal ring and the lower seal ring is 15% to 25% in a state where the upper housing is engaged with the lower housing.
8. A controller, comprising: a circuit board, a connector, and a connector sealing structure according to any one of claims 1 to 7;
The circuit board is arranged in the cavity between the upper shell and the lower shell, and the connector is arranged at one end edge of the circuit board.
9. The controller of claim 8, wherein a conductive sealant or conductive gasket is further disposed between the upper housing and the lower housing.
10. A vehicle, characterized by comprising: a controller as claimed in claim 8 or 9.
CN202410185461.4A 2024-02-19 2024-02-19 Connector sealing structure, controller and vehicle Pending CN118156878A (en)

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CN202410185461.4A CN118156878A (en) 2024-02-19 2024-02-19 Connector sealing structure, controller and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410185461.4A CN118156878A (en) 2024-02-19 2024-02-19 Connector sealing structure, controller and vehicle

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CN118156878A true CN118156878A (en) 2024-06-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119603905A (en) * 2024-11-29 2025-03-11 中国第一汽车股份有限公司 Controller and vehicle having the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119603905A (en) * 2024-11-29 2025-03-11 中国第一汽车股份有限公司 Controller and vehicle having the same

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