An electric appliance box conductive piece mounting structure and an electric appliance box

Abstract

The utility model discloses an electric appliance box conductive piece mounting structure and electric appliance box, including including box body and conductive piece, and conductive piece is configured as flat sheet shape and is integral injection molding structure with box body. The utility model discloses its conductive piece is flat sheet structure, need not bending and conductive piece integral injection molding with box body, so can realize electric appliance box overall weight reduction, improve the assembly stability of conductive piece and box body and simplify assembly process, and the inertia force that the structural member of electric appliance box is under in the vibration impact process is also favorable to reduce through the weight reduction design, reduces the stress and strain of structural member, promotes the fatigue life.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to an electrical box conductive component mounting structure and an electrical box. Background Technology

[0002] In the prior art, the electrical box used in the engine typically includes a box body, conductive components disposed on the box body, and a relay installed in the box body and connected to the conductive components. The conductive components are composed of several bent conductive sheets, each of which is embedded and fixed in a corresponding installation position in the box body. Therefore, the conductive component structure in the electrical box of the prior art solution is relatively complex, difficult to assemble, and the connection stability is difficult to control. Moreover, the electrical box is installed in the engine compartment of the vehicle, and during use, it will be affected by the combined effects of engine operating vibration and road bumps / impacts. As a result, the structural components of the electrical box are greatly affected during vibration and impact, resulting in poor fatigue life. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an electrical box conductive component mounting structure. The weight reduction design helps to reduce the inertial force on the structural components of the electrical box during vibration and impact, thereby reducing the stress and strain of the structural components and improving fatigue life.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: An electrical box conductive component mounting structure includes a box body and a conductive component. The conductive component is configured as a flat sheet and is integrally injection molded with the box body. Each connection part of the conductive component is exposed on the box body and is located on the same side opposite to the box body. The connection parts of the conductive component are connected to terminal parts integrally injection molded with the box body, and the conductive component is electrically connected to the terminal parts.

[0005] Furthermore, the terminal block is composed of a bolt structure with a stud and a nut. The stud passes through the connection part of the conductive component, and the nut abuts against the bottom of the connection part, so that the bolt structure is integrated with the conductive component and integrally injection molded with the box body.

[0006] Based on the same inventive concept, this utility model also provides an electrical box, including the above-mentioned electrical box conductive component mounting structure, a fuse and a relay, wherein the relay is mounted on the box body and has a lead-out portion, the fuse is connected to the conductive component of the box body, the conductive component and the lead-out portion of the relay are electrically connected, and the fuse is configured to be located on the same side of the box body as the relay.

[0007] Furthermore, the housing is provided with a terminal block section, which includes a terminal block A, a terminal block B, a terminal block C, a first connecting post, a second connecting post, a third connecting post, and a fourth connecting post. The conductive components include a first conductive sheet, a second conductive sheet, and a third conductive sheet arranged at intervals between each other. Terminal block A is connected to the first connecting post through the first conductive sheet. Terminal block B is connected to the second connecting post and the third connecting post through the second conductive sheet. The third connecting post and the fourth connecting post are connected through a fuse. The fourth connecting post and the C terminal block are connected through the third conductive sheet. The first connecting post and the second terminal block are electrically connected to the lead-out portion of the relay.

[0008] Furthermore, the relay leads include a first lead and a second lead, and the first and second terminals on the housing are configured to be connected to the corresponding first and second leads respectively via a first conductive connector and a second conductive connector.

[0009] Furthermore, the housing is equipped with an isolation shield, and at least the fuse, the first lead, and the second lead are configured to be integrated into the isolation space of the isolation shield.

[0010] Furthermore, a relay mounting position is provided on the outer surface of the box, and the relay is installed in the corresponding relay mounting position.

[0011] Furthermore, an annular baffle is provided on the surface of the housing. The first connecting post, the second connecting post, the third connecting post and the fourth connecting post are located in the installation space enclosed by the annular baffle. The first lead and the second lead of the relay are independently located outside the annular baffle and are respectively connected to the corresponding first connecting post and second connecting post through the first conductive connector and the second conductive connector.

[0012] Furthermore, the shielding area of ​​the isolation cover extends to the location of the annular barrier and the first and second leads of the relay.

[0013] Furthermore, the relay has a relay coil interface exposed to the protective shield.

[0014] Furthermore, a resistor or diode for suppressing reverse electromotive force is connected in parallel with the built-in coil of the relay.

[0015] Furthermore, a relay mounting position is provided on the outer surface of the box, and the relay is installed in the corresponding relay mounting position.

[0016] Furthermore, terminals A, B, C, the first connecting post, the second connecting post, the third connecting post, and the fourth connecting post are all made of carbon steel bolts.

[0017] Furthermore, the relay is provided with an insulating baffle located between the first lead and the second lead.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] 1. In the electrical box conductive component installation structure and electrical box described in this utility model, the conductive component on the box body is a flat sheet structure, and the conductive component and the box body are integrally injection molded. This can reduce the overall weight of the electrical box, improve the assembly stability of the conductive component and the box body, and simplify the assembly process. The weight reduction design also helps to reduce the inertial force on the structural components of the electrical box during vibration and impact, reduce the stress and strain of the structural components, and improve the fatigue life. In addition, the conductive sheets of the conductive component are insulated from each other by injection molding material, so that they do not need to be bent to avoid other adjacent conductive sheets to achieve mutual insulation. 2. Because the conductive components are injection molded as one piece with the box body, and the connection parts of the conductive components are exposed on the box body and located on the same side relative to the box body, they can be installed on one side of the box body, which is convenient for installation. At the same time, the conductive components are insulated by the injection molded parts, which achieves a compact structure and can improve the connection reliability of the conductive components. 3. The terminal block is composed of a bolt structure with studs and nuts. When it is integrally injection molded with the box body, the nuts can enhance the injection connection strength between it and the box body. On the other hand, the nuts abutting against the bottom of the conductive sheet connection part can also increase the contact area between the bolt and the conductive sheet, thereby increasing the conductive area. In addition, it also has a certain supporting function, which can improve the reliability of conductivity. 4. The relay and fuse are set on the same side of the box. A single protective cover can cover both the fuse and the relay at the same time, which simplifies the assembly process and improves assembly efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the electrical box according to an embodiment of the present utility model.

[0021] Figure 2 This is an exploded three-dimensional structural diagram of the electrical box according to an embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the electrical box according to an embodiment of the present invention.

[0023] Figure 4 This is a top view of the internal structure of the electrical box according to an embodiment of the present utility model.

[0024] Figure 5 yes Figure 4 AA section view in the image.

[0025] Figure 6 This is a schematic diagram of the connection structure of the terminal block, relay, and conductive sheet in an embodiment of this utility model.

[0026] Figure 7 This is a schematic diagram of the mounting structure of the terminal block, relay, conductive sheet, and housing in an embodiment of this utility model.

[0027] Label Explanation:

[0028] 1. Housing; 2. Relay; 3. Isolation and protective cover; 11. Terminal section; 12. First conductive piece; 13. Second conductive piece; 14. Fuse; 15. Third conductive piece; 16. First conductive connector; 17. Second conductive connector; 18. Relay mounting position; 19. Annular retaining wall; 21. First lead-out terminal; 22. Second lead-out terminal; 23. Relay coil interface; 24. Insulating baffle; 111. Terminal A; 112. Terminal B; 113. Terminal C; 114. First connecting post; 115. Second connecting post; 116. Third connecting post; 117. Fourth connecting post. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Please refer to the appendix. Figure 1 To be continued Figure 7An embodiment of this utility model provides an electrical box conductive component mounting structure, including a box body 1 and a conductive component. The conductive component is configured as a flat sheet and is integrally injection molded with the box body 1. Each connection part of the conductive component is exposed on the box body 1 and is located on the same side opposite to the box body 1. A terminal part 11 integrally injection molded with the box body 1 is connected to the connection part of the conductive component, and the conductive component is electrically connected to the terminal part 11. It is understood that in this embodiment, the conductive component on the box 1 is a flat sheet structure, and the conductive component is integrally injection molded with the box. Compared with the existing bent conductive component, the flat sheet structure is simpler and lighter. This can reduce the overall weight of the electrical box, improve the assembly stability of the conductive component and the box, and simplify the assembly process. The weight reduction design also helps to reduce the inertial force on the structural components of the electrical box during vibration and impact, reduce the stress and strain of the structural components, and improve fatigue life. Moreover, the conductive sheets of the conductive component are insulated from each other by injection molding material, so that they do not need to be bent to avoid other adjacent conductive sheets to achieve mutual insulation. Furthermore, since the conductive component is integrally injection molded with the box, and the connection part of the conductive component is exposed on the box and located on the same side relative to the box, it can be installed on one side of the box, which is convenient for the installation of the conductive component. At the same time, the conductive component is insulated by injection molding, which achieves a compact structure and can improve the connection reliability of the conductive component. Furthermore, since the conductive parts and the terminal block 11 are interconnected and integrally injection molded onto the housing 1, the terminal block can be effectively prevented from falling off and being lost. Moreover, there is no need to manually or use tooling to spend extra time assembling bolts during the production process, which simplifies the assembly process and improves assembly efficiency.

[0032] Please refer to the appendix. Figure 1 To be continued Figure 7 In one preferred embodiment, the terminal block portion 11 is composed of a bolt structure with a stud and a nut. The stud passes through the connection portion of the conductive element, and the nut abuts against the bottom of the connection portion, so that the bolt structure is integrally connected with the conductive element and integrally injection molded with the housing 1. In this embodiment, since the terminal block portion 11 is composed of a bolt structure with a stud and a nut, when it is integrally injection molded with the housing 1, the nut can enhance the injection molding connection strength with the housing 1 on the one hand, and on the other hand, the nut abutting against the bottom of the conductive sheet connection portion can increase the contact area between the bolt and the conductive sheet, thereby increasing the conductive area. Furthermore, it also has a certain supporting function, which can improve the conductivity reliability.

[0033] Please refer to the appendix. Figure 1 To be continued Figure 7An embodiment of this utility model also provides an electrical box, including the above-mentioned electrical box conductive component mounting structure, a relay 2, and a fuse 14. The relay 2 is mounted on the box body 1 and has a lead-out portion (specifically, in this embodiment, the lead-out portion includes a first lead-out end 21 and a second lead-out end 22). The fuse 14 is connected to the conductive component of the box body 1, and the conductive component is electrically connected to the lead-out portion of the relay 2. The fuse 14 is configured to be located on the same side of the box body 2 as the relay 2. The conductive component on the box body 1 includes a conductive sheet portion and a terminal portion 11. The terminal portion 11 includes a terminal A 111, a terminal B 112, a terminal C 113, a first connecting post 114, a second connecting post 115, a third connecting post 116, and a fourth connecting post 117. The conductive sheet portion includes a first conductive sheet 12, a second conductive sheet 13, and a third conductive sheet 15 spaced apart from each other (i.e.,...). In this embodiment, the conductive element is a collection of multiple flat sheet-shaped conductive sheets, and does not specifically refer to a single flat sheet-shaped conductive sheet or several flat sheet-shaped conductive sheets. However, in other embodiments, the number of flat sheet-shaped conductive sheets constituting the conductive element can be set according to actual needs and is not limited to the specific implementation method disclosed in this embodiment. Terminal A 111 is connected to the first connecting post 114 through the first conductive sheet 12. Terminal B 112 is connected to the second connecting post 115 and the third connecting post 116 through the second conductive sheet 13. The third connecting post 116 is connected to the fourth connecting post 117 through the fuse 14. The fourth connecting post 117 is connected to Terminal C 113 through the third conductive sheet 15. The first connecting post 114 is connected to the first lead-out terminal 21 through the first conductive connector 16, and the second connecting post 115 is connected to the second lead-out terminal 22 through the second conductive connector 17. It is understood that in this embodiment, the electrical box contains only five conductive sheet structures and one fuse (existing electrical boxes have two fuses). While meeting the current-carrying capacity requirement, by reducing the number of conductive sheets and using weight-reducing materials, compared to existing solutions (a total of six conductive sheets weighing approximately 200g), the number of conductive sheet structures can be reduced from six to five, and the total weight from approximately 200g to approximately 100g. Therefore, the electrical box in this embodiment has fewer conductive sheets, is lighter, and has fewer connection nodes. This weight-reduction design helps to reduce the inertial forces experienced by the structural components during vibration and impact, lowering the stress and strain of the structural components and improving fatigue life.

[0034] Please refer to the appendix. Figure 1 To be continued Figure 3In one preferred embodiment, the housing 1 is provided with an isolation protective cover 3, and the fuse 14 and the relay 2 are arranged on the same side of the housing 1. At least the fuse 14, the first lead 21 and the second lead 22 are configured to be integrated in the isolation space of the isolation protective cover 3. Preferably, the shielding range of the isolation protective cover 3 covers the annular barrier 19 and the location area of ​​the first lead 21 and the second lead 22 of the relay 2. Compared to the existing technology where the fuse and relay are respectively located on both sides of the electrical box and protected by two separate protective covers, this embodiment uses only one protective cover 3 to simultaneously protect the fuse 14, the first connecting post 114, the second connecting post 115, the third connecting post 116, the fourth connecting post 117, and the first lead 21 and the second lead 22 of the relay 2. This simplifies the overall structure of the electrical box and reduces the overall weight of the electrical box by saving one protective cover, thus reducing the inertial effects of gravity on the electrical box. Furthermore, since the relay and fuse are located on the same side of the box, one protective cover 3 can simultaneously protect both the fuse and the relay, simplifying the assembly process and improving assembly efficiency. The fact that the terminal block 11 is located on the same side as the first lead 21 and the second lead 22 of the relay 2 also improves the convenience of connection operations between the two.

[0035] Please refer to the appendix. Figure 1 In one preferred embodiment, an annular baffle 19 is provided on the surface of the housing 1. The first connecting post 114, the second connecting post 115, the third connecting post 116, and the fourth connecting post 117 are disposed within the installation space enclosed by the annular baffle 19. The first lead 21 and the second lead 22 of the relay 2 are independently disposed outside the annular baffle 19 and are respectively connected to the corresponding first connecting post 114 and second connecting post 115 via the first conductive connector 16 and the second conductive connector 17. The annular baffle 19 helps to improve the electrical clearance and creepage distance between the terminal portions 11 (first connecting post 114 and second connecting post 115) and the relay 2 (first lead 21 and second lead 22).

[0036] Please refer to the appendix. Figure 1 To be continued Figure 3In one preferred embodiment, a relay mounting position 18 is provided on the outer surface of the housing 1, and the relay 2 is correspondingly installed in the relay mounting position 18. The relay mounting position 18 and the fuse 14 are arranged on the same side. The relay 2 has a relay coil interface 23 exposed to the isolation protective cover 3. In this embodiment, the relay mounting position 18 is provided on the outer surface of the housing 1 so that the relay 2 can be exposed and installed on the housing 1, thereby improving the ease of installation, maintenance and replacement of the relay 2. In addition, the relay coil interface 23 exposed to the isolation protective cover 3 is provided on the relay 2, which can be directly connected to the wire harness female connector. Compared with the existing technical solution of the relay built into the electrical box, the intermediate transfer structure required for the relay control circuit to connect to the external wire harness female connector is eliminated, simplifying the overall structure of the electrical box. Furthermore, since the relay mounting position 18 and the fuse 14 are set on the same side, that is, the relay 2 and the fuse 14 are set on the same side on the box 1, the installation process avoids the situation in the prior art where the fuse is installed on one side of the box 1 and then the relay is flipped to the other side. The relay and the fuse being set on the same side on the box facilitates automated installation.

[0037] Please refer to the appendix. Figure 4 To be continued Figure 7 In one preferred embodiment, the first conductive sheet 12, the second conductive sheet 13, and the third conductive sheet 15 are configured as an insert-molded integral structure with the housing 1. In this embodiment, the first conductive sheet 12, the second conductive sheet 13, and the third conductive sheet 15 are an insert-molded integral structure with the housing 1. This configuration simplifies the assembly process of the conductive sheets, improves assembly accuracy, enhances the vibration resistance of each conductive sheet, reduces the probability of system failure, and results in higher structural reliability.

[0038] Please refer to the appendix. Figure 1 Appendix Figure 2 In one preferred embodiment, several mounting holes are provided on the housing 1, allowing the housing 1 to be directly locked to the engine through the engagement of the mounting holes and locking bolts. Existing electrical boxes typically include a housing and a base, with the base locked to the engine and the housing locked to the base. Compared to the prior art, the technical solution of this embodiment integrates the base structure and housing structure to achieve weight reduction, and also effectively reduces the number of locking bolts used, further reducing the overall weight of the electrical box. This helps to reduce the magnitude of inertial forces experienced by the electrical box during use, lowers the stress and strain of structural components, and improves fatigue life. Furthermore, the integrated design reduces locking / connection nodes, lowers the probability of system failure, and makes the structure more reliable and stable.

[0039] Please refer to the appendix. Figure 1 Appendix Figure 2In one preferred embodiment, a resistor or diode (not shown) for suppressing back electromotive force is connected in parallel with the built-in coil of relay 2. This configuration eliminates the need for an external resistor to be connected in parallel with the relay, making installation convenient for the client.

[0040] Please refer to the appendix. Figure 1 Appendix Figure 2 In one preferred embodiment, terminals A 111, B 112, C 113, the first connecting post 114, the second connecting post 115, the third connecting post 116, and the fourth connecting post 117 are all made of carbon steel bolts. In existing electrical boxes, the seven bolted terminals not only need to have a locking function but also a conductive function (conducting the circuit between the copper busbars inside the box and the external interface while meeting current-carrying capacity). Therefore, their terminals are all made of pure copper and have studs at both ends. Due to the special material and structure, customization or even machining is required, resulting in high usage costs for existing bolted terminals. In contrast, the bolts in this embodiment only need to have a locking function, and conventional carbon steel bolts can be used. Standard parts can be adopted, eliminating the need for customization or machining, thus reducing usage costs.

[0041] Please refer to the appendix. Figure 2 In one preferred embodiment, the relay 2 is provided with an insulating baffle 24 located between the first lead-out terminal 21 and the second lead-out terminal 22.

[0042] In this embodiment, fuse 14 is preferably a 125A fuse. The electrical box in this embodiment has three operating conditions: Condition 1, current direction B→C: generator charges 24V battery – single 125A fuse. Condition 2, current direction C→A: 24V battery acts as power source, supplying power to resistor load – single 125A fuse. Condition 3, current direction B→A: generator acts as power source, supplying power to resistor load – no fuse required. In this embodiment, the electrical box is equipped with only one fuse. Compared to the existing technology where two fuses are used in the circuit section, this reduces the overall weight of the electrical box to a certain extent, thereby mitigating the inertial effects of gravity on the electrical box and saving costs.

[0043] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A conductive component mounting structure for an electrical box, characterized in that: The device includes a housing (1) and a conductive component. The conductive component is configured as a flat sheet and is integrally injection molded with the housing (1). Each connection part of the conductive component is exposed on the housing (1) and is located on the same side relative to the housing (1). The connection part of the conductive component is connected to a terminal part (11) integrally injection molded with the housing (1), and the conductive component is electrically connected to the terminal part (11).

2. The electrical box conductive component mounting structure according to claim 1, characterized in that: The terminal block (11) is composed of a bolt structure with a stud and a nut. The stud passes through the connection part of the conductive component, and the nut abuts against the bottom of the connection part, so that the bolt structure is connected to the conductive component to form an integral part and is integrally injection molded with the box body (1).

3. An electrical appliance box, characterized in that: The device includes the electrical box conductive component mounting structure as described in claim 1 or 2, a relay (2) and a fuse (14), wherein the relay (2) is mounted on the box body (2), the relay (2) has a lead-out portion, the fuse (14) is connected to the conductive component of the box body (1), the conductive component is electrically connected to the lead-out portion of the relay (2), and the fuse (14) is configured to be located on the same side of the box body (2) as the relay (2).

4. The electrical box according to claim 3, characterized in that: The terminal block (11) includes terminal A (111), terminal B (112), terminal C (113), first connecting post (114), second connecting post (115), third connecting post (116), and fourth connecting post (117). The conductive element includes a first conductive sheet (12), a second conductive sheet (13), and a third conductive sheet (15) arranged at intervals. Terminal A (111) and the first connecting post (114) are connected by the first conductive sheet (12). The B terminal (112) is connected to the second connecting terminal (115) and the third connecting terminal (116) through the second conductive piece (13). The third connecting terminal (116) and the fourth connecting terminal (117) are connected through a fuse (14). The fourth connecting terminal (117) and the C terminal (113) are connected through the third conductive piece (15). The first connecting terminal (114) and the second terminal (115) are electrically connected to the lead-out part of the relay (2).

5. The electrical box according to claim 4, characterized in that: The relay (2) has a lead-out portion including a first lead-out terminal (21) and a second lead-out terminal (22). The first terminal (114) and the second terminal (115) on the housing (1) are configured to be connected to the corresponding first lead-out terminal (21) and second lead-out terminal (22) respectively via a first conductive connector (16) and a second conductive connector (17).

6. The electrical box according to claim 5, characterized in that: The housing (1) is provided with an isolation shield (3), and at least the fuse (14), the first lead (21) and the second lead (22) are configured to be integrated into the isolation space of the isolation shield (3).

7. The electrical box according to claim 5, characterized in that: An annular baffle (19) is provided on the surface of the housing (1). The first connecting post (114), the second connecting post (115), the third connecting post (116) and the fourth connecting post (117) are provided in the installation space enclosed by the annular baffle (19). The first lead (21) and the second lead (22) of the relay (2) are independently provided outside the annular baffle (19) and are respectively connected to the corresponding first connecting post (114) and second connecting post (115) through the first conductive connector (16) and the second conductive connector (17).

8. The electrical box according to claim 7, characterized in that: The shielding area of ​​the isolation shield (3) covers the location area of ​​the annular barrier (19) and the first lead (21) and the second lead (22) of the relay (2).

9. The electrical box according to claim 3, characterized in that: The relay (2) is provided with a relay coil interface (23) exposed to the isolation protective cover (3); Preferably, a resistor or diode for suppressing reverse electromotive force is connected in parallel with the built-in coil of the relay (2); Preferably, a relay mounting position (18) is provided on the outer surface of the housing (1), and the relay (2) is installed in the relay mounting position (18).

10. The electrical box according to any one of claims 3 to 9, characterized in that: Terminal A (111), terminal B (112), terminal C (113), first connecting post (114), second connecting post (115), third connecting post (116), and fourth connecting post (117) are all made of carbon steel bolts.

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