Intelligent trailer hook control box shell structure
By combining an integrated housing design with sealing grooves, sealing rings, reinforcing blocks, and snap rings, the problems of easy leakage and screw loosening in the housing structure of existing technologies are solved, achieving higher connection stability and sealing performance, and reducing production costs and time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENYI PRECISION TECH (SHANGHAI) CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-29
AI Technical Summary
The existing intelligent trailer hook control box has a separate design for the output interface and the housing, which is connected by screws. This makes the connection prone to leakage, water ingress and corrosion of electronic components, and the loosening of screws affects the reliability of use.
It adopts an integrated housing design with internal sealing grooves and sealing rings. The housing and cover are fixed with eight screws, and the output interface is equipped with external reinforcing blocks and snap rings to enhance the connection sealing and stability.
The improved housing protection level prevents screws from loosening and falling off, enhances the pull resistance of the output interface, ensures connection stability and sealing, and reduces production costs and time.
Smart Images

Figure CN224306057U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of control box technology, specifically relating to a housing structure for an intelligent trailer hook control box. Background Technology
[0002] The intelligent trailer hitch control box is a core control unit integrated into the trailer hitch system. It is responsible for coordinating sensor data, executing control algorithms, and managing communication modules to achieve intelligent and automated towing. Its functions include integrating multiple sensors (such as position, speed, and angle sensors) to perceive the relative displacement, speed difference, and angle changes between the trailer and the towing vehicle in real time, providing data support for dynamic adjustments. Based on sensor feedback, it automatically adjusts the towing force and direction to ensure that the trailer and the towing vehicle operate synchronously, avoiding safety hazards caused by speed differences or angle deviations. It communicates with the towing vehicle via a CAN bus or wireless module to synchronize vehicle status such as brake signals and turn signals, controls the trailer hitch power distribution, provides stable power to taillights, braking systems, etc., and supports power supply for external devices (such as radar detection and taillight control).
[0003] During the physical inspection, it was found that, Figure 1 The existing control box housing structure shown has the following problems: because the output interface and the housing are separate designs and connected by screws, during long-term use, leakage and water ingress are prone to occur at the connector, causing damage or corrosion to electronic components. In addition, because the connection is fastened by screws, the screws may loosen or fall off, which will affect the use. Utility Model Content
[0004] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide an intelligent trailer hitch control box housing structure.
[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0006] A smart trailer hook control box housing structure includes a housing with a cover plate. The housing is integrally connected to two output interfaces. The housing has protrusions at four corners inside. The four protrusions are fixedly mounted with a PCB board together with screws. The PCB board is equipped with pins located in the two output interfaces.
[0007] Furthermore, the housing is provided with a sealing groove, in which a sealing ring is placed. This design enhances the sealing performance of the connection between the housing and the cover plate.
[0008] Furthermore, the housing and the cover plate are fixed together using at least eight screws. This design ensures the connection strength, uniform stress distribution, and sealing after the connection is completed.
[0009] Furthermore, the pin is fitted with a reinforcing block, which is installed at the inner bottom of the output interface. This design limits the pin's position while improving the pin's stress distribution and preventing the connector from being inserted beyond its travel range.
[0010] Furthermore, the outer surface of the output interface is provided with a snap ring. This design enhances connection stability, resists accidental loosening caused by external dragging or vibration, ensures that the metal contacts always maintain stable contact pressure, and avoids poor contact or arc discharge caused by loosening.
[0011] The beneficial effects of using this utility model are as follows:
[0012] This invention eliminates the need for screws and sealing components, thus addressing the risk associated with the protection level requirements of the housing. It also reduces product costs and saves production time.
[0013] The integrated structure of this utility model enhances the tensile strength of the output interface and eliminates the problem of screws loosening or falling off when subjected to force, thus ensuring its strength. Attached Figure Description
[0014] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;
[0015] Figure 1 This is a schematic diagram of the housing structure of a smart trailer hitch control box in the prior art;
[0016] Figure 2 This is a schematic diagram of an embodiment of the intelligent trailer hook control box housing structure of this utility model;
[0017] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the intelligent trailer hook control box housing structure of this utility model;
[0018] Figure 4 This is an exploded structural diagram of an embodiment of the intelligent trailer hook control box housing structure of this utility model;
[0019] The symbols for the main components are explained below:
[0020] 1. Housing; 2. Cover plate; 3. Output interface; 4. Protrusion; 5. PCB board; 6. Pin; 7. Sealing groove; 8. Reinforcing block; 9. Fastening ring. Detailed Implementation
[0021] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] like Figures 2-4As shown, the present invention discloses a housing structure for an intelligent trailer hook control box, comprising a housing 1, a cover plate 2 installed on the housing 1, two output interfaces 3 integrally connected to the housing 1, protrusions 4 provided at the four corners inside the housing 1, and a PCB board 5 fixedly installed on the four protrusions 4 together with screws, and pins 6 located in the two output interfaces 3 installed on the PCB board 5.
[0023] In this implementation case, when using a smart trailer hook control box housing structure, the PCB board 5 with soldered pins 6 is placed into the housing 1 by inserting pins 6 into the output interface 3. Then, screws and protrusions 4 are used to fix the PCB board 5 in the housing 1. Finally, the cover plate 2 is installed on the housing 1. It is simple, convenient and quick.
[0024] Compared to existing technologies that require the output interface 3 to be installed on the housing 1 before proceeding to the next step, this method saves more working time.
[0025] Preferably, the housing 1 is provided with a sealing groove 7, and a sealing ring is placed in the sealing groove 7. This design enhances the sealing performance between the housing 1 and the cover plate 2. In fact, sealing measures can also be considered according to specific circumstances.
[0026] It is preferable to use at least eight screws to fix the housing 1 and the cover plate 2. This design ensures the connection strength, uniform stress distribution and sealing after the connection is completed. In fact, fixing measures can also be considered according to specific circumstances.
[0027] The preferred pin 6 is fitted with a reinforcing block 8, which is installed at the bottom inner part of the output interface 3. This design limits the pin 6 while making the pin 6 more effective in bearing force and preventing the connector from being inserted beyond its travel. In fact, the structure of the pin 6 can also be considered according to the specific situation.
[0028] The outer surface of the preferred output interface 3 is provided with a snap ring 9. This design enhances connection stability and can resist accidental loosening caused by external force dragging or vibration, ensuring that the metal contacts always maintain stable contact pressure and avoiding poor contact or arc discharge caused by loosening. In fact, the position and number of snap rings 9 can also be considered according to specific circumstances.
[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A housing structure for an intelligent trailer hook control box, comprising a housing (1), characterized in that: The housing (1) is fitted with a cover plate (2). The housing (1) is integrally connected with two output interfaces (3). The housing (1) has protruding posts (4) at the four corners inside. The four protruding posts (4) are fixedly mounted with screws to a PCB board (5). The PCB board (5) is fitted with pins (6) located in the two output interfaces (3).
2. The intelligent trailer hook control box housing structure according to claim 1, characterized in that: The housing (1) is provided with a sealing groove (7), and a sealing ring is placed in the sealing groove (7).
3. The intelligent trailer hook control box housing structure according to claim 2, characterized in that: The housing (1) and the cover plate (2) are secured together using at least eight screws.
4. The intelligent trailer hook control box housing structure according to claim 3, characterized in that: The pin (6) is fitted with a reinforcing block (8), which is installed on the inner bottom of the output interface (3).
5. The intelligent trailer hook control box housing structure according to claim 4, characterized in that: The outer surface of the output interface (3) is provided with a fastening ring (9).