Vehicle-mounted high-side switch

Abstract

The utility model discloses a vehicle-mounted high-side switch, which comprises a shell and a PCBA (Printed Circuit Board Assembly), and the front surface of the shell is provided with a mounting cavity; the PCBA assembly is installed in the installation cavity, the PCBA assembly comprises an input and output assembly and a PCBA board arranged on the back side of the input and output assembly, the PCBA board is arranged between the input and output assembly and the inner surface of the installation cavity, the signal lamp is characterized in that the signal lamp is further provided with a signal lamp bead, the back face of the signal lamp bead is provided with pins, and the pins are connected with the PCBA board. The front face of the input and output assembly is provided with an installation groove matched with the signal lamp bead, the signal lamp bead is installed in the installation groove, and the pin penetrates through the installation groove to be connected with the PCBA board. According to the utility model, the maintenance convenience is improved, and the assembly efficiency and the assembly quality are also ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and more particularly to a vehicle-mounted high-side switch. Background Technology

[0002] In diesel engine intake systems, the intake preheater plays a crucial and effective role in low-temperature environments. Vehicle-mounted high-side switches offer more efficient and stable operation compared to traditional electromagnetic relays, effectively ensuring engine starting performance at low temperatures. Integrated into an intelligent control module, the high-side switch effectively solves the problem of traditional relays burning out due to unforeseen factors causing continuous heating. The high-side switch determines its self-protection control temperature by detecting its own temperature and the ambient engine temperature, then transmits a fault signal to the vehicle.

[0003] However, this structure has the following shortcomings:

[0004] 1. When inspecting the high-side switch, it is necessary to use professional tools to analyze the high-side switch signal in order to determine whether the high-side switch is damaged or in other states, which affects the convenience and efficiency of inspection.

[0005] 2. When connecting the input / output terminal assembly and housing of the high-side switch (the high-side switch includes the input / output terminal assembly, PCBA board, and housing, with the PCBA board and input / output terminal assembly installed inside the housing), there may be a problem of reverse installation (for example, the left end of the input / output terminal is facing the left end of the housing, but in reverse installation, the left end of the input / output terminal is facing the right end of the housing). In reverse installation, it cannot be locked and needs to be disassembled and reinstalled, which affects the installation efficiency. Summary of the Invention

[0006] The purpose of this utility model is to provide a vehicle-mounted high-side switch. By using this structure, the convenience of high-side switch maintenance is improved, as well as the convenience and efficiency of high-side switch assembly.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a vehicle-mounted high-side switch, comprising:

[0008] The housing has a mounting cavity on its front side;

[0009] A PCBA assembly is mounted within the mounting cavity. The PCBA assembly includes input / output components and a PCBA board disposed on the back side of the input / output components. The PCBA board is positioned between the input / output components and the inner surface of the mounting cavity.

[0010] The system also includes a signal lamp bead with pins on its back. The front of the input / output assembly has a mounting slot that matches the signal lamp bead. The signal lamp bead is installed in the mounting slot, and the pins pass through the mounting slot and are connected to the PCBA board.

[0011] In the above technical solution, the input / output component has a via hole on the back that communicates with the mounting slot, and the pin passes through the via hole to connect with the PCBA board.

[0012] In the above technical solution, the outer surface of the signal lamp bead is provided with a cut surface, and the cut surface abuts against the inner surface of the mounting groove.

[0013] In the above technical solution, the input / output component has a through groove in the middle, the through groove passes through the front and back of the input / output component, and a cover plate is detachably installed in the through groove.

[0014] In the above technical solution, the input / output component is provided with multiple bolts, the back ends of the multiple bolts are connected to the PCBA board, and the front ends of the multiple bolts are located on the outer side of the front of the input / output component.

[0015] In the above technical solution, each bolt is further provided with an outwardly extending and coaxially arranged guide light rod on its front side, and the outer diameter of the guide light rod is smaller than the outer diameter of the corresponding bolt.

[0016] In the above technical solution, the back of the input / output component is also provided with multiple positioning posts, which are arranged on the side of the PCBA board. The mounting cavity is provided with positioning holes that match the positioning posts, and each positioning post is inserted into a positioning hole.

[0017] In the above technical solution, each of the positioning posts has a screw hole on its back side, and the housing is equipped with a positioning bolt that mates with the positioning post. Each positioning bolt passes through the housing from the back side and is screwed into the screw hole.

[0018] In the above technical solution, at least one of the positioning posts is an irregularly shaped structure, and the positioning hole that mates with the irregularly shaped positioning post is an irregularly shaped positioning hole.

[0019] In the above technical solution, the outer surface of the positioning post of the irregular structure is provided with a protrusion, and the inner wall of the positioning hole of the irregular structure is provided with a groove that cooperates with the protrusion.

[0020] Alternatively, the outer surface of the positioning post of the irregular structure is provided with a groove, and the inner wall of the positioning hole of the irregular structure is provided with a groove that cooperates with the groove.

[0021] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0022] 1. In this utility model, signal LEDs connected to the PCBA board are also provided on the input / output components. By observing the flashing frequency and flashing color of the signal LEDs, problems with the high-side switch can be quickly identified, making maintenance more convenient and improving the ease of maintenance.

[0023] 2. In this utility model, the signal lamp bead is provided with a cut edge, and the input / output component has a mounting groove that mates with the signal lamp bead. The signal lamp bead and the mounting groove are not complete cylindrical structures, which can effectively ensure that the signal lamp bead is installed accurately and quickly without misalignment, and ensure that the pins of the signal lamp bead can be accurately connected to the PCBA board, thus ensuring the convenience and efficiency of installation.

[0024] 3. The positioning post in this utility model adopts an irregular shape, which enables quick and accurate alignment with the housing, prevents the problem of reverse installation, ensures accurate and quick assembly of PCBA components and housing, and ensures assembly efficiency and ease of assembly.

[0025] 4. In this utility model, a guide rod with a smaller diameter is provided on the front side of the bolt, which facilitates the connection between the nut and the bolt and improves the convenience and efficiency of the nut connection. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model;

[0027] Figure 2 This is an exploded view of Embodiment 1 of this utility model;

[0028] Figure 3 This is an exploded view of the PCBA assembly in Embodiment 1 of this utility model;

[0029] Figure 4 This is an exploded view of the input / output components in Embodiment 1 of this utility model;

[0030] Figure 5 This is a cross-sectional view of the signal lamp bead in Embodiment 1 of this utility model.

[0031] The components include: 1. housing; 11. mounting cavity; 12. positioning bolts;

[0032] 2. PCBA assembly; 21. Input / output assembly; 22. PCBA board; 210. Mounting slot; 211. Through slot; 212. Bolt; 213. Positioning post; 220. Screw; 2120. Light guide rod; 2130. Screw hole; 2131. Raised strip; 3. Signal lamp bead; 31. Pin; 32. Facet; 4. Cover plate. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0034] Example 1: See Figure 1-5 As shown, a vehicle-mounted high-side switch includes:

[0035] Housing 1, wherein a mounting cavity 11 is provided on the front side of the housing 1;

[0036] PCBA component 2 is installed in the mounting cavity 11. The PCBA component 2 includes an input / output component 21 and a PCBA board 22 disposed on the back side of the input / output component 21. The PCBA board 22 is disposed between the input / output component 21 and the inner surface of the mounting cavity 11 (in the illustrated direction, the PCBA board is disposed between the input / output component and the bottom surface of the mounting cavity). The PCBA board 22 is locked in the mounting cavity 11 of the housing 1 by screws 220.

[0037] The system also includes a signal lamp bead 3, with pins 31 on the back. The input / output assembly 21 has a mounting slot 210 on the front that matches the signal lamp bead 3. The signal lamp bead 3 is installed in the mounting slot 210, and the pins 31 pass through the mounting slot 210 and are connected to the PCBA board 22.

[0038] In this embodiment, indicator LEDs are also provided, and mounting slots for the indicator LEDs are provided on the input / output components. The pins of the indicator LEDs are connected to the PCBA. The high-side switch can feed back its fault signals through the indicator LEDs. Especially during maintenance (the high-side switch feeds back signals to the vehicle computer, and maintenance is performed outside the vehicle), there is no need for special instruments to connect the vehicle computer and the high-side switch. The problem of the high-side switch can be determined by the color and flashing frequency of the indicator LEDs. For example, the high-side switch flashes twice per second for high-temperature protection, or a blue light illuminates if there is a damage to a part of the high-side switch, or other similar patterns. Maintenance personnel can directly and quickly determine the problem of the high-side switch through the indicator LEDs, and can also intuitively understand the various states of the high-side switch during operation, improving maintenance convenience and reducing maintenance difficulty. The mounting slots facilitate the accommodation, installation, and limiting of the indicator LEDs, preventing the indicator LEDs from protruding out of the input / output components and causing damage.

[0039] The input / output component 21 has a via on its back that communicates with the mounting slot 210, and the pin 31 passes through the via and connects to the PCBA board 22.

[0040] In this embodiment, the thickness of the input / output component is greater than the length of the signal lamp bead. Therefore, the mounting slot is a blind hole. Taking the direction shown in the figure as an example, the front of the housing is the top, the back of the housing is the bottom, the mounting slot is set on the top surface of the input / output component, the bottom of the via is connected to the bottom surface of the input / output component, and the top is connected to the mounting slot. There are two pins and two vias. Each pin passes through a via and connects to the PCBA board.

[0041] See Figure 3 , 5 As shown, the outer surface of the signal lamp bead 3 is provided with a cut surface 32, which abuts against the inner surface of the mounting groove 210.

[0042] In this embodiment, the presence of the cut surface makes the signal lamp bead an irregular cylindrical structure, and the mounting slot is also an irregular cylindrical structure. Therefore, after the signal lamp bead is inserted into the mounting slot, the signal lamp bead will not rotate relative to the mounting slot, which can prevent reverse installation and ensure that the two pins are connected to the positive and negative terminals of the PCBA board respectively.

[0043] See Figure 1-3 As shown, the input / output component 21 has a through groove 211 in the middle, the through groove 211 penetrates the front and back of the input / output component 21, and a cover plate 4 is detachably installed in the through groove 211.

[0044] Taking the direction shown in the diagram as an example, the PCBA board is located below the input / output components. To facilitate the maintenance of the PCBA board without having to remove the PCBA components from the housing, a cover plate and a through slot are provided. During maintenance or repair, the cover plate is removed, and the condition of the PCBA board can be observed through the through slot. This allows for a decision on whether the PCBA components need to be removed from the housing for replacement or repair. If the PCBA board can be repaired directly through the through slot, it is not necessary to remove it from the housing, thus improving the convenience of maintenance.

[0045] See Figure 2-4 As shown, the input / output assembly 21 is provided with multiple bolts 212. The back ends of the multiple bolts 212 are connected to the PCBA board 22, and the front ends of the multiple bolts 212 are located on the outer side of the front of the input / output assembly 21. In the illustrated direction, the bottom of the bolt is connected to the PCBA board, and the top of the bolt is above the top surface of the input / output assembly.

[0046] The number of bolts is even, either two or four. Taking two bolts as an example, one bolt connects to the positive terminal of the vehicle power supply, and the other bolt connects to the negative terminal, supplying power to the PCBA board so that it can function properly. Alternatively, four bolts are used: two bolts connect the vehicle power supply to the PCBA board, and the other two bolts connect to the vehicle computer for signal transmission (the input / output assembly consists of a plastic part with a through-groove in the center and multiple bolts on it. The plastic part positions the bolts, connecting them to the PCBA board. It also protects and shields the PCBA board and connects it to the housing). In this embodiment, four bolts are used: two M6 bolts and two M4 bolts. These two different bolt sizes are used for signal transmission and power supply, respectively. Therefore, using two different bolt sizes facilitates the differentiation between signal and power connections, preventing incorrect installation.

[0047] See Figure 2-4 As shown, each bolt 212 also has an outwardly extending and coaxially arranged guide light rod 2120 on its front side, the outer diameter of the guide light rod 2120 being smaller than the outer diameter of the corresponding bolt 212. In the illustrated direction, the guide light rod is located at the top of the bolt.

[0048] When connecting bolts to the power supply and vehicle computer, the power supply and vehicle computer use conductive lugs to fit onto the bolts, and then the nut and bolt are screwed together to achieve the connection between the conductive lugs and the bolts. To facilitate the screwing of the nut and bolt, in the original method, if the nut is not initially screwed on when it is against the end of the bolt, it will fall off, affecting the convenience and efficiency of the screwing. In this embodiment, a smaller diameter light guide rod is used. When the nut and bolt are screwed together, the outer diameter of the light guide rod is smaller than the inner diameter of the nut. The nut is first fitted onto the light guide rod, and then the nut and bolt are screwed together. The light guide rod acts as a positioning element for the nut, preventing it from falling off during the screwing process and ensuring the stability and efficiency of the screwing.

[0049] See Figure 2-4 As shown, the input / output component 21 is also provided with multiple positioning posts 213 on the back side. The multiple positioning posts 213 are arranged on the side of the PCBA board 22. The mounting cavity 11 is provided with positioning holes that match the positioning posts 213. Each positioning post 213 is inserted into a positioning hole.

[0050] Each of the positioning posts 213 has a screw hole 2130 on its back side. The housing 1 is equipped with a positioning bolt 12 that mates with the positioning post 213. Each positioning bolt 12 passes through the housing 1 from the back side and is screwed into the screw hole 2130.

[0051] The positioning posts are preferably used in an even number, either two or four. In this embodiment, four positioning posts are used. Two positioning posts are located on the front side of the PCBA board, and the other two positioning posts are located on the rear side of the PCBA board. The length of the positioning posts is greater than the distance from the back of the PCBA board to the back of the input / output components. Taking the direction shown in the figure as an example, the bottom plane of the positioning post is below the bottom surface of the PCBA board. Therefore, the positioning post is inserted into the positioning hole to realize the quick insertion and positioning of the PCBA component and the housing. Then, the positioning post and the housing are connected by positioning bolts to realize the connection between the PCBA component and the housing.

[0052] See Figure 4 As shown, at least one of the positioning posts 213 has an irregular shape, and the positioning hole that mates with the irregularly shaped positioning post 213 is an irregularly shaped positioning hole.

[0053] The outer surface of the positioning post 213 of the irregular structure is provided with a protrusion 2131, and the inner wall of the positioning hole of the irregular structure is provided with a groove that cooperates with the protrusion 2131. This structure is adopted in this embodiment.

[0054] In another embodiment, the outer surface of the positioning post of the irregular structure is provided with a groove, and the inner wall of the positioning hole of the irregular structure is provided with a groove that cooperates with the groove.

[0055] In this embodiment, four positioning posts are used, one of which is an irregularly shaped structure with protruding strips on its outer surface. In this structure, when the PCBA assembly and the housing are installed (the housing is a symmetrical structure), if they are installed in reverse, the positioning post cannot be fully inserted into the positioning hole. Therefore, at least one positioning post is an irregularly shaped structure. If installed in reverse, this irregularly shaped positioning post cannot be properly inserted into the positioning hole. The installer can quickly determine whether the PCBA assembly is installed in reverse, improve assembly efficiency, and ensure installation quality.

[0056] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A vehicle-mounted high-side switch, comprising: The housing (1) has a mounting cavity (11) on its front side; A PCBA assembly (2) is installed in the mounting cavity (11). The PCBA assembly (2) includes an input / output assembly (21) and a PCBA board (22) disposed on the back side of the input / output assembly (21). The PCBA board (22) is disposed between the input / output assembly (21) and the inner surface of the mounting cavity (11). The PCBA assembly (22) is characterized by: The system also includes a signal lamp bead (3), with a pin (31) on the back side. The input / output assembly (21) has a mounting slot (210) on the front side that matches the signal lamp bead (3). The signal lamp bead (3) is installed in the mounting slot (210), and the pin (31) passes through the mounting slot (210) and is connected to the PCBA board (22).

2. The vehicle-mounted high-side switch according to claim 1, characterized in that: The input / output component (21) has a via on its back that communicates with the mounting slot (210), and the pin (31) passes through the via and is connected to the PCBA board (22).

3. The vehicle-mounted high-side switch according to claim 1, characterized in that: The outer surface of the signal lamp bead (3) is provided with a cut surface (32), which abuts against the inner surface of the mounting groove (210).

4. The vehicle-mounted high-side switch according to claim 1, characterized in that: The input / output component (21) has a through groove (211) in the middle, the through groove (211) passes through the front and back of the input / output component (21), and a cover plate (4) is detachably installed in the through groove (211).

5. The vehicle-mounted high-side switch according to claim 1, characterized in that: The input / output assembly (21) is provided with multiple bolts (212), the back ends of the multiple bolts (212) are connected to the PCBA board (22), and the front ends of the multiple bolts (212) are located on the outside of the front of the input / output assembly (21).

6. The vehicle-mounted high-side switch according to claim 5, characterized in that: Each of the bolts (212) is also provided with an outwardly extending and coaxially arranged guide light rod (2120) on the front side, the outer diameter of the guide light rod (2120) being smaller than the outer diameter of the corresponding bolt (212).

7. The vehicle-mounted high-side switch according to claim 1, characterized in that: The input / output component (21) is also provided with multiple positioning posts (213) on the back side. The multiple positioning posts (213) are arranged on the side of the PCBA board (22). The mounting cavity (11) is provided with positioning holes that match the positioning posts (213). Each positioning post (213) is inserted into a positioning hole.

8. The vehicle-mounted high-side switch according to claim 7, characterized in that: Each of the positioning posts (213) has a screw hole (2130) on its back side. The housing (1) is equipped with a positioning bolt (12) that mates with the positioning post (213). Each positioning bolt (12) is inserted from the back side of the housing (1) and screwed into the screw hole (2130).

9. The vehicle-mounted high-side switch according to claim 7, characterized in that: At least one of the positioning posts (213) is an irregularly shaped structure, and the positioning hole that mates with the irregularly shaped positioning post is an irregularly shaped positioning hole.

10. The vehicle-mounted high-side switch according to claim 9, characterized in that: The outer surface of the positioning post (213) of the irregular structure is provided with a protrusion (2131), and the inner wall of the positioning hole of the irregular structure is provided with a groove that cooperates with the protrusion (2131). Alternatively, the outer surface of the positioning post (213) of the irregular structure is provided with a groove, and the inner wall of the positioning hole of the irregular structure is provided with a groove that cooperates with the groove.

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