Waterproof structure of power inlet end

Abstract

The utility model discloses a waterproof structure of a power inlet end, and particularly relates to the technical field of automobile power distribution unit waterproofing, which comprises a waterproof plastic shell, a power inlet stud is arranged in the waterproof plastic shell, and a conductive bus bar is further arranged in the waterproof plastic shell. A plugging stress part is formed at the joint of the conductive bus bar and the waterproof plastic shell, a U-shaped area is arranged on the surface of the conductive bus bar, and the U-shaped area is arranged in a U-shaped power input mode. According to the utility model, the conductive bus bar is designed to be U-shaped, and the injection molding bonding stroke of the conductive bus bar and plastic is increased, so that the range of a plugging stress part is effectively reduced to the whole stroke of an electricity inlet port and the U-shaped bus bar, the stress caused by vibration or plugging is avoided, and the stress possibility after injection molding of plastic and metal is effectively avoided; and the high-speed increase of the cost is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproofing of automobile power distribution units, and more specifically, to a waterproof structure of a power input end. Background Art

[0002] With the development of automotive electronics, intelligent all-semiconductor power distribution units have gradually become a must-have component for L3 and above intelligent driving vehicles. With the birth of all-semiconductor power distribution units and the high functional safety standards of new energy vehicles, dust and waterproofing of intelligent power distribution have become standard parameters of products. Therefore, low-cost, high-reliability waterproof power inlet terminals have become the focus of market pursuit; more cost-effective waterproof design terminals have become a trend demand.

[0003] At present, as the level of intelligent driving of new energy vehicles is getting higher and higher, the safety level requirements for the vehicle's distribution unit are getting higher and higher. High-level waterproof and dustproof have become standard parameters of intelligent distribution units. In order to adapt to the market's high reliability and high waterproof level requirements and market demand, cost-effective waterproof terminals have come into being.

[0004] At present, in order to achieve high current power supply and high waterproof level (IP67 or above) design, while taking into account the low cost design ideas, the traditional design scheme has proposed the following Figure 1 The design idea is that the power studs and conductive busbars are firstly injected into the plastic through the injection molding process, so that the metal busbar and the plastic shell can be well injection molded together to achieve high adhesion to achieve the purpose of waterproofing. This solution has a low cost and waterproof design at the ground waterproof level (less than IP67).

[0005] However, as the power is plugged in and out and the temperature changes, gaps appear at the plug-in and pull-out stress points where the metal and plastic are bonded, resulting in waterproof failure. To solve this problem, the current solution is to change to a waterproof connector. Generally, the price of a waterproof connector with the same high current is more than ten times that of this solution, which is costly.

[0006] In view of the above situation, the present invention proposes a waterproof structure for the power input end. Utility Model Content

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a waterproof structure of the power input end to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof structure of the power input end, comprising a waterproof plastic shell, a power input stud is arranged inside the waterproof plastic shell, a conductive bus bar is also arranged inside the waterproof plastic shell, the connection between the conductive bus bar and the waterproof plastic shell forms a plug-in and pull-out force point, a U-shaped area is provided on the surface of the conductive bus bar, and the U-shaped area is a U-shaped power input setting.

[0009] It can be seen that in the above structure, the conductive busbar is designed to be U-shaped for power inlet and is wrapped and injection-molded inside the waterproof plastic shell to form an integrated structure, so that the connection between the conductive busbar and the waterproof plastic shell forms a plug-in and pull-out force point, but the force point is effectively limited to the U-shaped area, thereby enhancing the stability and waterproof performance of the structure.

[0010] In order to achieve stability in current transmission, preferably, the power inlet stud is threadedly connected to the waterproof plastic housing, and the power inlet stud is in contact with one end of the conductive bus bar.

[0011] In order to improve the waterproof level and reduce the risk of bonding failure due to temperature changes or plugging and unplugging, preferably, the conductive bus bar is tightly fitted with the waterproof plastic shell, and the conductive bus bar and the waterproof plastic shell are injection molded as one, and the U-shaped area to which the conductive bus bar belongs is injection molded and wrapped inside the waterproof plastic shell.

[0012] The technical effects and advantages of this utility model are:

[0013] By designing the conductive busbar into a U-shaped power inlet, and injection-molding the conductive busbar and the waterproof plastic shell as one, and wrapping its U-shaped area inside the waterproof plastic shell through injection molding, the U-shaped design increases the bonding stroke of the conductive busbar and the plastic injection molding, so that the range of the plug-in and pull-out force is effectively narrowed to the power inlet port. The entire stroke of the U-shaped busbar avoids the force caused by vibration or plug-in and pull-out, effectively avoiding the possibility of force after plastic and metal injection molding, and avoiding rapid cost growth. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the traditional design structure of the present utility model.

[0015] Figure 2 It is a schematic diagram of the design structure of the utility model.

[0016] The accompanying drawings are marked as follows: 1. Waterproof plastic shell; 2. Power inlet stud; 3. Conductive bus bar; 4. Insertion and removal force point; 5. U-shaped area. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] As attached Figure 2 A waterproof structure of a power input end shown includes a waterproof plastic shell 1, a power input stud 2 is arranged inside the waterproof plastic shell 1, and a conductive bus bar 3 is also arranged inside the waterproof plastic shell 1. The connection between the conductive bus bar 3 and the waterproof plastic shell 1 forms a plug-in and pull-out force point 4, and a U-shaped area 5 is provided on the surface of the conductive bus bar 3, and the U-shaped area 5 is a U-shaped power input setting.

[0019] Specifically, the structure mainly consists of a waterproof plastic housing 1, a power inlet stud 2, and a conductive busbar 3. The power inlet stud 2 and the conductive busbar 3 are both cleverly arranged inside the waterproof plastic housing 1. In particular, the conductive busbar 3 adopts a U-shaped power inlet design with a U-shaped area 5 on its surface. This design creates a plug-in and pull-out force point 4 at the connection between the conductive busbar 3 and the waterproof plastic housing 1, but the force point is effectively confined within the U-shaped area 5, thereby enhancing the stability and waterproof performance of the structure. Specifically;

[0020] Through the U-shaped power inlet design and the tight injection molding of the conductive bus bar 3 and the waterproof plastic shell 1, the structure can achieve a waterproof level of up to IP67 / IP69K, effectively preventing moisture intrusion and ensuring safe and reliable electrical connections. Compared with traditional waterproof connectors, this structure adopts a low-cost power inlet stud 2 and injection molding process, which significantly reduces production costs while meeting the market demand for cost-effective waterproof terminals. Moreover, the U-shaped power inlet design effectively solves the problem of waterproof failure caused by vibration or plug-in stress. By increasing the bonding stroke of the conductive bus bar 3 and the plastic injection molding and reducing the range of the stress points, the structure can resist external shocks and vibrations and maintain the stability of the connection. At the same time, the design of the structure simplifies the product installation process and reduces process production costs. At the same time, its good waterproof performance and stability also reduce the frequency of later maintenance and replacement, further reducing the overall cost of use.

[0021] In a specific embodiment, as shown in the attached Figure 1 、 2 As shown, the power inlet stud 2 is threadedly connected to the waterproof plastic housing 1, and the power inlet stud 2 is in contact with one end of the conductive bus bar 3 for stability of current transmission.

[0022] In a specific embodiment, as shown in the attached Figure 2As shown, the conductive bus bar 3 is tightly fitted with the waterproof plastic housing 1 , and the conductive bus bar 3 and the waterproof plastic housing 1 are injection molded as one body, and the U-shaped area 5 to which the conductive bus bar 3 belongs is injection molded and wrapped inside the waterproof plastic housing 1 .

[0023] Specifically, in this structure, the conductive bus bar 3 is injection molded into one piece with the waterproof plastic shell 1, and the U-shaped area 5 to which the conductive bus bar 3 belongs is injection molded and wrapped inside the waterproof plastic shell 1 to improve the waterproof level and reduce the risk of bonding failure due to temperature changes or plugging and unplugging.

[0024] Working principle of this utility model:

[0025] The utility model proposes a waterproof structure of a power input end, which is mainly used to improve the structure of the power input end of the power distribution unit of the front cabin or instrument of a car, specifically;

[0026] First, the waterproof plastic housing 1, as the main structure, provides a well-sealed environment to prevent external moisture intrusion. The power inlet stud 2 is firmly installed inside the waterproof plastic housing 1 and serves as the interface for current entry. The conductive busbar 3 adopts a U-shaped power inlet design. This unique design is the key to improving waterproof performance.

[0027] The U-shaped area 5 of the conductive busbar 3 is tightly bonded to the waterproof plastic housing 1 through an injection molding process, forming a continuous waterproof barrier. During insertion and removal, or when subjected to vibration, the U-shaped design focuses the insertion and removal force 4 on the power inlet port, rather than on the entire contact surface between the conductive busbar 3 and the plastic housing. This effectively reduces gaps caused by force and avoids waterproof failure.

[0028] Through the above improved design, the technical solution increases the conductive busbar 3 and plastic injection molding bonding stroke through the U-shaped design, so that the range of the plugging and unplugging force point 4 is effectively narrowed to the power input port. The entire stroke of the U-shaped busbar avoids the force caused by vibration or plugging and unplugging, effectively avoiding the possibility of force after plastic and metal injection molding, and avoiding a rapid increase in cost;

[0029] Compared with traditional waterproof designs, high adhesion between metal and plastic is often required to achieve a waterproof effect. However, long-term plugging and unplugging and temperature changes may cause gaps in the bonding. The U-shaped design of the utility model effectively solves this problem by increasing the bonding stroke and reducing the force range. Moreover, since this design avoids the use of expensive waterproof connectors, it greatly reduces production costs while ensuring waterproof performance.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waterproof structure for a power input terminal, comprising a waterproof plastic housing (1), characterized in that: An inlet stud (2) is provided inside the waterproof plastic housing (1), and a conductive bus bar (3) is also provided inside the waterproof plastic housing (1), wherein the connection between the conductive bus bar (3) and the waterproof plastic housing (1) forms a plugging and unplugging force point (4); A U-shaped area (5) is provided on the surface of the conductive busbar (3), and the U-shaped area (5) is arranged in a U-shaped power input configuration.

2. The waterproof structure of the power input terminal according to claim 1, characterized in that: The power inlet stud (2) is threadedly connected to the waterproof plastic housing (1), and the power inlet stud (2) is in contact with one end of the conductive bus bar (3).

3. The waterproof structure of the power input terminal according to claim 1, characterized in that: The conductive bus bar (3) is tightly fitted to the waterproof plastic housing (1), and the conductive bus bar (3) and the waterproof plastic housing (1) are injection-molded into one piece.

4. The waterproof structure of the power input terminal according to claim 1, characterized in that: The U-shaped area (5) to which the conductive busbar (3) belongs is injection-molded and wrapped inside the waterproof plastic housing (1).

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