Electronic control unit (ECU) shell of automobile brake-by-wire system EHB

Abstract

The utility model relates to the technical field of ECU shells, in particular to an ECU shell of an automobile drive-by-wire brake system EHB, an ECU shell cover is arranged at the upper end of an ECU shell body, a set of positioning sleeves are fixedly connected to the lower end of the ECU shell cover, the set of positioning sleeves are designed through opening chamfers, a set of framework guide columns are fixedly connected to the inner surface of the ECU shell cover, and the framework guide columns are fixedly connected to the lower end of the ECU shell cover. The three clearance through grooves are formed in the framework guide column, the positioning sleeves matched with the clearance through grooves are matched with the framework guide column in maximum outer diameter, the surface of the framework guide column can play a buffering role in installation operation by sleeving the rubber pads, and the positioning sleeves and the framework guide column are matched to play a reinforcing role after installation is completed. When the framework guide pillar is inserted into the positioning sleeve, a gap is formed between the gap through groove and the inner wall of the positioning sleeve, so that the framework guide pillar is buffered when being mounted in the positioning sleeve, and the risk of fracture of the framework guide pillar is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ECU housing technology, and in particular to an ECU housing for an automotive brake-by-wire system (EHB). Background Technology

[0002] The ECU housing of an EHB (Electronic Brake-by-Wire) system plays a crucial role in automotive safety braking. It provides a safe and reliable protective shell for the EHB system's control circuit board, ensuring its stable operation in the complex operating environment of the vehicle, thereby precisely controlling the braking process and protecting the lives of passengers. Whether driving on ordinary city roads, highways, or in complex road conditions, the ECU housing must effectively protect the internal circuit board from external vibrations, dust, moisture, and other factors to maintain the normal operation of the EHB system. Currently, the ECU housing of an EHB system typically requires the following technologies in practical applications:

[0003] 1. Reliable sealing technology: It can effectively prevent dust, moisture and other substances from entering the housing, avoid damage to the control circuit board, and ensure that the ECU can work stably under various harsh environmental conditions.

[0004] 2. Good heat dissipation technology: Since the control circuit board generates heat during operation, the ECU housing needs to have an efficient heat dissipation structure or material to dissipate the heat in time and prevent the circuit board performance from deteriorating or components from being damaged due to overheating.

[0005] 3. Robust fixing technology: Ensures that the control circuit board is firmly fixed in the housing. Under the vibration environment during vehicle operation, the circuit board will not shift or loosen, ensuring the stability and reliability of the circuit connection.

[0006] 4. Precise positioning technology: When installing the ECU housing, precise positioning is required to ensure that all components can be accurately aligned, thus ensuring the sealing, stability, and correct internal circuit connections of the entire system.

[0007] Currently, various methods are employed to achieve effective installation and protection of ECU housings. Some ECU housings connect the upper and lower housings using simple screws, with guide posts used for initial positioning during installation. Other designs combine snap-fit ​​mechanisms with guide posts, attempting to achieve precise positioning while ensuring ease of installation. Furthermore, some more complex ECU housing designs, in addition to guide post positioning, incorporate auxiliary positioning structures such as locating pins to further improve positioning accuracy.

[0008] However, the above method has a prominent hardware structural problem: during the installation of the ECU housing, guide pillars are commonly used for positioning. However, existing guide pillars lack openings during installation. In actual installation, the guide pillars are in close contact with the mating parts without any buffer space. When there is a certain deviation during installation or when subjected to external impact, the guide pillars are prone to excessive stress, which can lead to breakage. Once the guide pillars break, it will not only affect the installation accuracy of the ECU housing, resulting in a decrease in sealing and stability, but may also damage the internal control circuit board, thereby affecting the normal operation of the vehicle's brake-by-wire system (EHB) and posing a serious threat to driving safety. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides an ECU housing for an automotive brake-by-wire (EHB) system. It solves the problem that while guide posts are commonly used for positioning during ECU housing installation, they lack proper clearance during installation. In actual installation, the guide post is in close contact with the mating components without any buffer space. When there is a deviation during installation or when subjected to external impact, the guide post is easily subjected to excessive stress, leading to breakage. Once the guide post breaks, it not only affects the installation accuracy of the ECU housing, resulting in decreased sealing and stability, but may also damage the internal control circuit board, thereby affecting the normal operation of the automotive EHB system and posing a serious threat to driving safety.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] An ECU housing for an automotive brake-by-wire system (EHB) includes an ECU housing body, an ECU housing cover at the upper end of the ECU housing body, a set of positioning sleeves fixedly connected to the lower end of the ECU housing cover, all of the positioning sleeves having an open chamfered design, and a set of skeleton guide posts fixedly connected to the inner surface of the ECU housing cover.

[0012] Preferably, all of the aforementioned skeleton guide posts are disposed inside a set of positioning sleeves.

[0013] Preferably, both the ECU housing body and the ECU cover are internally threaded with a set of fixing screws.

[0014] Preferably, each of the skeleton guide posts has a gap groove inside.

[0015] Preferably, the ECU housing contains a control circuit board.

[0016] Preferably, the outer surface of the ECU housing is provided with an external connector.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Three gap grooves are opened inside the skeleton guide post, and the positioning sleeve that matches the maximum outer diameter of the skeleton guide post is adapted to it. The surface of the skeleton guide post can be cushioned during installation by sleeved rubber pads, and the cooperation between the positioning sleeve and the skeleton guide post will provide a reinforcement effect after installation. When the skeleton guide post is inserted into the positioning sleeve, there will be a gap between it and the inner wall of the positioning sleeve due to the opening of the gap grooves. In this way, the skeleton guide post is cushioned when it is installed into the positioning sleeve, reducing the risk of skeleton guide post breakage. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is an exploded view of the ECU housing cover connection of this utility model;

[0022] Figure 3 This is an exploded view of the positioning sleeve connection of this utility model;

[0023] Figure 4 This is an exploded view of the skeleton guide post connection of this utility model.

[0024] Legend: 11. ECU housing body; 12. ECU housing cover; 13. Positioning sleeve; 14. Frame guide post; 15. Fixing screw; 16. Gap through groove; 17. Control circuit board body; 18. External connector. Detailed Implementation

[0025] This application provides an ECU housing for an automotive brake-by-wire (EHB) system, effectively solving the problem that the commonly used guide post method for positioning during ECU housing installation lacks proper clearance during installation. In actual installation, the guide post and mating components are in tight contact without any buffer space. When there is a deviation during installation or when subjected to external impact, the guide post is easily subjected to excessive stress, leading to breakage. Once the guide post breaks, it not only affects the installation accuracy of the ECU housing, resulting in decreased sealing and stability, but may also damage the internal components. The control circuit board of the frame guide post is affected, which in turn affects the normal operation of the vehicle's brake-by-wire system (EHB), posing a serious threat to driving safety. Three gap slots are opened in the frame guide post, and the positioning sleeve that matches the maximum outer diameter of the frame guide post is adapted to it. The surface of the frame guide post can be cushioned during installation by sleeved rubber pads, and the cooperation between the positioning sleeve and the frame guide post will provide reinforcement after installation. When the frame guide post is inserted into the positioning sleeve, the gap between the gap slots and the inner wall of the positioning sleeve will be present, thus providing cushioning when the frame guide post is installed into the positioning sleeve and reducing the risk of frame guide post breakage.

[0026] Example

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that the guide post method is commonly used for positioning during ECU housing installation. However, existing guide posts lack opening gaps during installation. In actual installation, the guide post and the mating parts are in close contact without any buffer space. When there is a certain deviation during installation or when subjected to external impact, the guide post is prone to excessive stress, resulting in breakage. Once the guide post breaks, it will not only affect the installation accuracy of the ECU housing, leading to a decrease in sealing and stability, but may also damage the internal control circuit board, thereby affecting the normal operation of the vehicle's brake-by-wire system (EHB) and posing a threat to driving safety. The technical problem with serious hidden dangers can be addressed by the following general approach: An ECU housing for an automotive brake-by-wire (EHB) system includes an ECU housing body 11, an ECU housing cover 12 at the upper end of the ECU housing body 11, a set of positioning sleeves 13 fixedly connected to the lower end of the ECU housing cover 12, and a set of skeleton guide posts 14 fixedly connected to the inner surface of the ECU housing cover 12. The skeleton guide posts 14 are all located inside the set of positioning sleeves 13. During the installation of the ECU housing body 11 and the ECU housing cover 12, the positioning sleeves 13 installed at the lower end of the ECU housing cover 12 and the skeleton guide posts 14 installed on the inner surface of the ECU housing body 11 cooperate to provide guidance.

[0028] Both the ECU housing body 11 and the ECU cover 12 are internally threaded with a set of fixing screws 15. A set of positioning sleeves 13 are designed with chamfered openings. A set of skeleton guide pillars 14 are internally provided with clearance slots 16. The skeleton guide pillars 14 have three clearance slots 16, and the maximum outer diameter of the positioning sleeves 13 and skeleton guide pillars 14 are matched. The surface of the skeleton guide pillars 14 can be fitted with rubber pads to provide cushioning during installation. The cooperation between the positioning sleeves 13 and skeleton guide pillars 14 will provide reinforcement after installation. When the skeleton guide pillars 14 are inserted into the positioning sleeves 13, the clearance slots 16 will create a gap between the skeleton guide pillars 14 and the inner wall of the positioning sleeves 13. This cushions the skeleton guide pillars 14 when they are installed into the positioning sleeves 13, reducing the risk of breakage.

[0029] The ECU housing 11 houses a control circuit board 17, and the outer surface of the ECU housing 11 has an external connector 18. The ECU housing 11 and the ECU cover 12 are installed and fixed together by tightening the fixing screws 15. After installation, external wiring is connected through the external connector 18 to establish the circuit connection. The control circuit board 17, which is bonded inside the ECU housing 11, provides control for the vehicle's brake-by-wire system (EHB). The control circuit board 17 acts as a coil, providing the necessary power supply. It is connected to the power system through circuit wiring, transmitting electrical energy with appropriate voltage and current to the EHB coil. The control circuit board 17 precisely controls the actuators of the EHB system, such as adjusting the brake fluid pressure by sending commands to the hydraulic control unit, thereby achieving precise distribution of braking force to each wheel and ensuring safe and stable braking of the vehicle under various driving conditions.

[0030] To address the problems existing in the prior art, this utility model provides an ECU housing for an automotive brake-by-wire system (EHB). The skeleton guide post 14 has three gap grooves 16 inside, and the positioning sleeve 13 that mates with it is adapted to the maximum outer diameter of the skeleton guide post 14. The surface of the skeleton guide post 14 can be cushioned during installation by attaching a rubber pad, and the cooperation between the positioning sleeve 13 and the skeleton guide post 14 provides reinforcement after installation. When the skeleton guide post 14 is inserted into the positioning sleeve 13, the gap grooves 16 create a gap between the skeleton guide post 14 and the inner wall of the positioning sleeve 13, thus providing cushioning when the skeleton guide post 14 is installed into the positioning sleeve 13 and reducing the risk of breakage.

[0031] Working principle:

[0032] The first step is to install and fix the ECU housing body 11 and ECU cover 12 as a whole by tightening the fixing screws 15. After installation, external wiring is connected through the external connector 18 to make the circuit connection. The control circuit board body 17, which is glued inside the ECU housing body 11, provides control for the vehicle's brake-by-wire system (EHB). The control circuit board body 17 provides the necessary power supply for the coil. It is connected to the power system through the circuit wiring, and transmits electrical energy with appropriate voltage and current to the EHB coil. The control circuit board body 17 precisely controls the actuators of the EHB system, such as adjusting the brake fluid pressure by sending commands to the hydraulic control unit, so as to achieve precise distribution of braking force to each wheel and ensure that the vehicle can brake safely and stably under various driving conditions.

[0033] In the second step, during the installation of the ECU housing body 11 and the ECU housing cover 12, the positioning sleeve 13 installed at the lower end of the ECU housing cover 12 and the skeleton guide post 14 installed on the inner surface of the ECU housing body 11 cooperate to provide guidance. The skeleton guide post 14 has three gap through grooves 16, and the positioning sleeve 13 and the skeleton guide post 14 are matched with each other in maximum outer diameter. The surface of the skeleton guide post 14 can be cushioned during the installation operation by sleeved rubber pads, and the cooperation between the positioning sleeve 13 and the skeleton guide post 14 will provide reinforcement after installation. When the skeleton guide post 14 is inserted into the positioning sleeve 13, there will be a gap between it and the inner wall of the positioning sleeve 13 due to the opening of the gap through grooves 16. In this way, the skeleton guide post 14 is cushioned when it is installed into the positioning sleeve 13, reducing the risk of the skeleton guide post 14 breaking.

[0034] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An ECU housing for an automotive brake-by-wire system (EHB), comprising an ECU housing body (11), wherein an ECU housing cover (12) is provided at the upper end of the ECU housing body (11), characterized in that, A set of positioning sleeves (13) is fixedly connected to the lower end of the ECU housing (12), and all of the positioning sleeves (13) have an open chamfer design; A set of skeleton guide posts (14) are fixedly connected to the inner surface of the ECU housing (12).

2. The ECU housing of an automotive brake-by-wire system (EHB) as described in claim 1, characterized in that, All of the aforementioned skeleton guide posts (14) are set inside a set of positioning sleeves (13).

3. The ECU housing of an automotive brake-by-wire system (EHB) as described in claim 2, characterized in that, Both the ECU housing body (11) and the ECU cover (12) are threaded with a set of fixing screws (15).

4. The ECU housing of an automotive brake-by-wire system (EHB) as described in claim 3, characterized in that, Each of the skeleton guide posts (14) has a gap through groove (16) inside.

5. The ECU housing of an automotive brake-by-wire system (EHB) as described in claim 4, characterized in that, The ECU housing (11) contains a control circuit board body (17).

6. The ECU housing of an automotive brake-by-wire system (EHB) as described in claim 5, characterized in that, The outer surface of the ECU housing (11) is provided with an external connector (18).

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