Vehicle-mounted charger and assembling method thereof

Abstract

The invention discloses a vehicle-mounted charger and an assembling method, the vehicle-mounted charger comprises an integrated closed shell, the integrated closed shell comprises a main body part and an end part which are used for accommodating components, and a circuit board component which comprises at least one main circuit board and at least one auxiliary circuit board, the auxiliary circuit board and the main circuit board are configured to be capable of being inserted into the integrated closed shell in sequence, and the auxiliary circuit board and the main circuit board are spliced and electrically connected; during installation, the auxiliary circuit board is firstly installed in the integrated closed shell and positioned, and then the main circuit board is installed in the integrated closed shell and installed with the auxiliary circuit board in a butt joint mode. The integrated closed shell is adopted, and the structural design and the installation process of the circuit board are optimized, so that sequential installation and reliable electric connection of the auxiliary circuit board and the main circuit board can be smoothly realized in a limited internal space, and the waterproofness and the overall strength are improved on the premise of ensuring the product performance.

Description

Technical Field

[0001] The invention relates to a vehicle charger, in particular to a vehicle charger and an assembly method thereof. Background Art

[0002] At present, with the increasing demand for on-board charging, the market has put forward higher requirements for the structural design of on-board chargers, especially in terms of waterproof performance, appearance integrity and structural strength. Traditional on-board chargers usually adopt a combined shell structure, which is composed of multiple parts. Although it is relatively convenient to complete the installation of the internal circuit board, there are some obvious defects during use.

[0003] First, the combined shell is prone to gaps at the joints, which not only affects the overall waterproof performance, but may also cause the structure to loosen during long-term use, reducing the strength and durability of the charger. In addition, the spliced ​​structure also limits the appearance of the product, making it difficult to meet the growing market demand for beauty and refinement. Therefore, in order to solve these problems, designing a car charger with an integrated closed shell has become an ideal solution.

[0004] However, there is no on-board charger with an integrated enclosed housing in the prior art, because the enclosed structure is difficult to process and the installation of internal components is extremely difficult. Specifically, since the integrated enclosed housing is open only at one end, the internal cavity becomes larger, processing is difficult, and assembly cannot provide sufficient operating space. Therefore, reliable installation and electrical connection of the internal circuit board cannot be achieved in the prior art. This technical bottleneck has limited the industry's exploration of integrated enclosed designs, making it impossible to effectively improve the waterproofness, structural strength and appearance integration of the charger. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a vehicle charger and an assembly method thereof. By optimizing the structural design and installation process of the circuit board, the auxiliary circuit board and the main circuit board can be smoothly installed in sequence and reliably electrically connected within a limited internal space, thereby improving the waterproofness and overall strength while ensuring product performance, improving the integrity of the product appearance, and meeting the market demand for high-quality vehicle chargers.

[0006] The present invention is implemented by the following technical solutions: a vehicle charger, comprising an integrated closed housing, the integrated closed housing comprising a main body and an end portion for accommodating components, an inner through hole and an installation cavity are provided inside the main body and the end portion, and the diameter of the installation cavity is larger than the inner through hole; The circuit board assembly comprises at least one main circuit board and at least one auxiliary circuit board, wherein the auxiliary circuit board and the main circuit board are configured to be inserted into an integral closed housing in sequence.

[0007] During installation, the auxiliary circuit board is first installed into the integrated closed housing and positioned, and then the main circuit board is installed into the integrated closed housing and docked with the auxiliary circuit board for installation; Alternatively, the main circuit board is first installed in the integrated closed housing and positioned, and then the auxiliary circuit board is installed in the integrated closed housing and docked with the main circuit board for installation. The installation order of the main circuit board and the auxiliary circuit board is not limited, and the auxiliary circuit board can be installed in the closed housing first.

[0008] As a preferred technical solution, a mounting cavity is formed in the end portion, the diameter of the mounting cavity is larger than the inner through hole, an inner through hole connected to the mounting cavity is formed in the main body portion, one end of the inner through hole is provided with an opening, and the main circuit board and the auxiliary circuit board enter the mounting cavity through the opening and the inner through hole for conductive assembly; Alternatively, the auxiliary circuit board is installed into the installation cavity from the end surface side of the end portion, and the main circuit board is installed into the installation cavity from the opening side of the inner through hole to be conductively connected to the auxiliary circuit board.

[0009] As a preferred technical solution, the secondary circuit board is provided with a first interface and a first circuit electrical connector, the main circuit board is provided with a second interface and a second circuit electrical connector, and the end face of the end portion is provided with a first assembly port corresponding to the first interface and a second assembly port corresponding to the second interface, and the number of the first assembly port, the second assembly port, the first interface, and the second interface is one or more.

[0010] As a preferred technical solution, the first circuit electrical connector is used to be plugged into the second circuit electrical connector to form a conductive connection, and the first interface and the second interface are used as charging interfaces of a vehicle charger, or extended to multiple charging interfaces.

[0011] As a preferred technical solution, the first circuit electrical connector and the second circuit electrical connector can be electrically connected in the installation cavity to achieve conductive docking of the main circuit board and the auxiliary circuit board.

[0012] As a preferred technical solution, the one-piece closed shell is an one-piece molded structure, and the outer diameter of its end portion is larger than the outer diameter of the main body.

[0013] As a preferred technical solution, one end of the opening is sealed by an end cover, the integrated closed shell is closed by the end cover, and the positive pole of the cigarette lighter is electrically connected to the power supply through a spring device, and the holes on both sides of the integrated closed shell are connected to the negative pole of the cigarette lighter through the negative pole electrical connection contact to obtain power.

[0014] The assembly method of the vehicle charger of the present invention comprises the following specific steps: Step 1: insert the auxiliary circuit board into the installation cavity from the opening end of the inner through hole or from the end surface side of the end portion, so that it enters the installation cavity and aligns the interface on the auxiliary circuit board with the first assembly port; Step 2: Use external auxiliary equipment to position and fix the interface of the auxiliary circuit board in the first assembly port; Step 3: insert the main circuit board from the opening of the inner through hole, make it enter the installation cavity and align the interface of the main circuit board with the second assembly opening, and electrically connect the connectors of the main circuit board and the auxiliary circuit board; Step 4: After the main circuit board is installed, remove the external auxiliary equipment and seal the end cover to complete the assembly.

[0015] The beneficial effects of the present invention are as follows: the present invention effectively avoids the gap problem caused by the traditional spliced ​​shell by adopting an integrated closed shell, thereby significantly improving the waterproof performance and overall structural strength of the charger, making it more adaptable to the complex and changeable use environment inside the vehicle; At the same time, due to the one-piece structure of the shell, the appearance of the charger is more integrated and beautiful, meeting the market demand for high-quality and simple design; In addition, the present invention successfully overcomes the operational difficulties of the integrated enclosed housing during the installation process by optimizing the structure and installation sequence of the circuit board, so that the auxiliary circuit board and the main circuit board can be inserted into the limited internal space in sequence and achieve reliable electrical connection, which not only simplifies the installation process, but also improves production efficiency and assembly accuracy, and effectively reduces production costs; the entire structure is reasonably designed and easy to install. While ensuring the reliable connection of each component, it improves the durability and stability of the product, is suitable for large-scale production and meets the high standards required in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of a housing of the present invention; Figure 3 This is an exploded schematic diagram of the present invention after the secondary circuit is installed; Figure 4 This is a schematic diagram of the exploded structure after the main and auxiliary circuit boards are installed in the present invention; Figure 5It is a schematic diagram of the structure of the main and auxiliary circuit boards after being plugged in according to the present invention; Description of reference numerals: 2. One-piece closed housing; 22. Main body; 21. End; 9. Main circuit board; 11. Sub-circuit board; 8. Mounting cavity; 7. Inner through hole; 1. End cover; 3. First interface; 12. First circuit electrical connector; 4. Second interface; 10. Second circuit electrical connector; 5. First assembly port; 6. Second assembly port; 13. Negative electrical connection contact. DETAILED DESCRIPTION

[0018] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0019] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0020] like Figure 1 As shown, the present invention relates to a vehicle charger, which mainly includes an integrated enclosed housing 2 and an internal circuit board assembly. The integrated enclosed housing 2 includes a main body 22 and an end 21, and the overall structure is an integrated molding design to ensure the waterproof performance and overall structural strength of the housing, so as to adapt to the special needs of the vehicle environment. The design of the integrated enclosed housing 2 is different from the traditional spliced ​​housing structure. The overall protection effect of the product is improved by an integrated molding method, the gaps that may appear in the multi-part spliced ​​structure are avoided, the waterproof and dustproof performance are improved, and it has higher durability in the vehicle environment.

[0021] like Figure 2 As shown, a mounting cavity 8 is provided in the end portion 21 of the housing, and the mounting cavity 8 is used to accommodate and fix the circuit board assembly inside. At the same time, an inner through hole 7 is provided in the main body 22, and the inner through hole 7 is connected to the mounting cavity 8 and has an opening at one end. The open end of the inner through hole 7 can be sealed by the end cover 1, thereby further improving the protection performance of the integrated closed housing 2.

[0022] The sealing method of the end cover 1 can adopt a variety of sealing structures, such as threaded connection, snap connection or sealing gasket structure, to ensure the airtightness of the opening.

[0023] like Figure 3-Figure 5As shown, the circuit board assembly of the present invention comprises a main circuit board 9 and a sub-circuit board 11. The sub-circuit board 11 and the main circuit board 9 are configured to be inserted into the inner through hole 7 in sequence and finally positioned in the mounting cavity 8. Since the internal space of the mounting cavity 8 and the inner through hole 7 is relatively compact, a sequential installation method of the sub-circuit board 11 and the main circuit board 9 is designed; Specifically, during installation, the secondary circuit board 11 is first installed to the open end of the inner through hole 7, and is introduced into the installation cavity 8 through the passage; it can also enter the installation cavity 8 by expanding the first interface or the second interface, such as Figure 3 As shown. The auxiliary circuit board 11 can be accurately aligned with the preset position when fixed in the installation cavity 8. The key to this installation process is to use the opening of the integrated closed housing 2 to sequentially introduce the circuit board components, ensure that each component can smoothly enter the internal space and achieve stable electrical connection after the final installation is completed.

[0024] In a further technical solution, the secondary circuit board 11 is provided with a first interface 3 and a first circuit electrical connector 12, and the main circuit board 9 is provided with a second interface 4 and a second circuit electrical connector 10. During the installation process, these interfaces and connectors must be precisely aligned to realize the function of the vehicle charger. For example, the first interface 3 of the secondary circuit board 11 is designed as an input (charging or power supply) interface connected to an external device, and the first circuit electrical connector 12 is designed to be docked with the second circuit electrical connector 10 of the main circuit board 9 to realize the transmission of electrical signals; On the end surface 21 of the integral closed housing 2, there are also provided a first assembly port 5 corresponding to the first interface 3, and a second assembly port 6 corresponding to the second interface 4. This design facilitates providing an external interface after the charger is assembled, for connecting mobile phones, digital products and other devices that need to be charged, thereby realizing the output of power.

[0025] During the assembly process, Figure 3 As shown, first insert the auxiliary circuit board 11 through the opening of the inner through hole 7, so that it passes through the inner through hole 7 and enters the installation cavity 8, and the interface of the auxiliary circuit board 11 needs to be aligned with the first assembly port 5 of the end 21. In this step, external auxiliary equipment can be used to assist in the precise alignment and fixation of the interface. The auxiliary equipment can be a connector that matches the first interface 3. By inserting the connector into the first interface, the positioning of the first interface 3 can be completed, ensuring that the first interface 3 is accurately positioned in the first assembly port 5, thereby ensuring the stability of the interface position in the subsequent stages of the assembly process. After this step is completed, the auxiliary circuit board 11 is stably positioned in the installation cavity 8, and its interface is aligned with the first assembly port 5 of the end 21 of the integrated enclosed housing 2.

[0026] Then, if Figure 4As shown, the main circuit board 9 is inserted from the open end of the inner through hole 7, and is sequentially introduced into the installation cavity 8 through the inner through hole 7. At this time, the interface of the main circuit board 9 also needs to be aligned with the second assembly port 6 of the end 21. At the same time, the second circuit electrical connector 10 on the main circuit board 9 needs to be conductively connected with the first circuit electrical connector 12 on the auxiliary circuit board 11 to ensure the electrical connection between the main and auxiliary circuit boards 11. The present invention particularly considers the docking method of the circuit board assembly in a narrow installation space. Through the reasonable design of the circuit connector position, the main circuit board 9 and the auxiliary circuit board 11 can quickly achieve electrical conduction when entering the installation cavity 8. The connector adopts a plug-in method to achieve rapid docking of the main and auxiliary circuit boards 11, and the electrical connection is stable and reliable, which reduces internal wiring and connectors and simplifies the assembly process.

[0027] When the installation of the main circuit board 9 is completed and connected to the auxiliary circuit board 11, the connector can be removed. On the premise that the main and auxiliary circuit boards 11 are fixed and the electrical connection is completed, the end cover 1 is installed on the open end of the integrated closed housing 2 to complete the entire assembly process. The end cover 1 seals the opening through a sealing structure during installation, and then electrically connects to the positive pole of the cigarette lighter through a spring device, further ensuring the airtightness and protection performance of the car charger. The models of the first interface and the second interface can be any model, such as a USB interface Type-c interface, etc.

[0028] like Figure 3 As shown, the present invention also includes two negative electrical connection contacts 13 and one positive package contact 14. Both the negative electrical connection contacts and the positive package contact are conductively connected to the main circuit board. After the charger is inserted into the cigarette lighter, the charger is conductively contacted with the cigarette lighter through the package contacts.

[0029] The assembly method of the present invention effectively solves the problem of splicing shells in the traditional charger structure, and realizes sequential installation and reliable electrical connection in the integrated closed shell 2, which not only simplifies the assembly process, but also improves the sealing, structural strength and waterproof performance of the product. In practical applications, the charger can provide stable power output in a vehicle environment, is not easily affected by external environmental factors, and has broad market application prospects.

[0030] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A vehicle charger, characterized in that: The invention comprises an integrated closed housing (2), wherein the integrated closed housing (2) comprises a main body (22) and an end (21) for accommodating components, wherein an inner through hole and a mounting cavity are provided inside the main body (22) and the end (21), and the diameter of the mounting cavity is larger than that of the inner through hole; The circuit board assembly comprises at least one main circuit board (9) and at least one auxiliary circuit board (11), wherein the auxiliary circuit board (11) and the main circuit board (9) are configured to be inserted into an integrated closed housing (2) in sequence.

2. The vehicle charger according to claim 1, characterized in that: The end portion (21) forms a mounting cavity (8), the diameter of the mounting cavity being larger than the inner through hole, the main body (22) forms an inner through hole (7) communicating with the mounting cavity (8), one end of the inner through hole (7) is provided with an opening, and the main circuit board (9) and the auxiliary circuit board (11) enter the mounting cavity (8) through the opening and the inner through hole (7) for conductive assembly; Alternatively, the auxiliary circuit board (11) is installed into the installation cavity from the end surface side of the end portion (21), and the main circuit board is installed into the installation cavity from the opening side of the inner through hole to be conductively connected to the auxiliary circuit board.

3. The vehicle charger according to claim 1, characterized in that: The secondary circuit board (11) is provided with a first interface (3) and a first circuit electrical connector (12), the main circuit board (9) is provided with a second interface (4) and a second circuit electrical connector (10), the end surface of the end portion (21) is provided with a first assembly port (5) corresponding to the first interface (3), and a second assembly port (6) corresponding to the second interface (4), the first assembly port (5), the second assembly port (6), the first interface (3), and the second interface (4) being provided in one or more quantities.

4. The vehicle charger according to claim 3, characterized in that: The first circuit electrical connector (12) is used to be plugged into the second circuit electrical connector (10) to form an electrically conductive connection, and the first interface (3) and the second interface (4) are used as charging interfaces of an on-board charger, or extended to form multiple charging interfaces.

5. The vehicle charger according to claim 3, characterized in that: The first circuit electrical connector (12) and the second circuit electrical connector (10) can be electrically connected in the installation cavity (8) to achieve conductive docking of the main circuit board (9) and the auxiliary circuit board (11).

6. The vehicle charger according to claim 3, characterized in that: The one-piece closed shell (2) is an one-piece molded structure, and the outer diameter of the end portion (21) is greater than the outer diameter of the main body (22).

7. The vehicle charger according to claim 2, characterized in that: One end of the opening is sealed by an end cover (1), and the integrated closed housing (2) is sealed by the end cover (1), and is electrically connected to the positive pole of the cigarette lighter through a spring device to obtain electricity. The integrated closed housing (2) has openings on both sides, and is electrically connected to the negative pole of the cigarette lighter through the negative pole electrical connection contact (13) to obtain electricity.

8. An assembly method of a vehicle charger according to any one of claims 1 to 7, characterized in that: The specific steps include: Step S1: inserting the auxiliary circuit board (11) from the opening end of the inner through hole (7) or inserting it into the installation cavity from the end surface side of the end portion (21), so that it enters the installation cavity (8) and aligns the interface on the auxiliary circuit board (11) with the first assembly port (5); Step S2: using an external auxiliary device to position and fix the interface of the secondary circuit board (11) in the first assembly opening (5); Step S3: inserting the main circuit board (9) from the opening of the inner through hole (7) into the installation cavity (8) and aligning the interface (4) of the main circuit board (9) with the second assembly opening (5), and electrically connecting the connectors of the main circuit board (9) and the auxiliary circuit board (11); Step S4: After the main circuit board (9) is installed, remove the external auxiliary equipment and seal the end cover (1) to complete the assembly.

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