Onboard direct current connector

Abstract

The utility model provides an onboard direct-current connector which comprises a shell, and an installation cavity is formed in the shell. The limiting lining is installed in the installation cavity in a buckled mode. One end of the movable positioning part is installed on the limiting lining in a sliding mode, and the other end of the movable positioning part is a front end plate which is located at the front end of the shell; the elastic element is arranged between the front end of the shell and the front end plate, and the elastic force of the elastic element is used for keeping the front end plate in a forward extending state; the front end of the welding terminal is installed on the front end plate and extends forwards, the rear end of the welding terminal is movably connected to the conductive sleeve and is connected with the connecting terminal through the conductive sleeve, the front end of the welding terminal is welded to the PCB, and the shell is installed on the case in a sealed mode through a nut and a gasket. According to the invention, the assembly process is simplified, the production cost is reduced, and the installation flexibility and the space utilization rate are improved. Meanwhile, the connector has the advantage of being capable of allowing large installation errors.

Description

Technical Field

[0001] The present application relates to the field of connectors, and in particular to a board-mounted DC connector. Background Art

[0002] In the electronic equipment manufacturing industry, onboard DC connectors serve as a crucial bridge between the power supply and the printed circuit board (PCB). Their design and performance directly impact the stability and reliability of the entire electronic system. Traditional onboard DC connectors typically use a crimped cable with a terminal, which is then screwed to the power receiving terminal on the PCB using a lug at the other end. While this connection method meets electrical connection requirements to a certain extent, it has several drawbacks.

[0003] First, from a space utilization perspective, traditional connection methods require additional cables and cable lugs. These components not only take up valuable space but can also interfere with the normal operation of other electronic components due to improper layout. As electronic devices move towards miniaturization and integration, this space occupation problem has become increasingly prominent.

[0004] Secondly, from the perspective of production efficiency, traditional connection methods involve multiple assembly steps, including crimping the terminal to the cable, crimping the cable lugs, and securing with screws. Each step requires specialized tools and technicians, which is not only time-consuming and labor-intensive, but also increases production costs. Furthermore, the accumulation of multiple processes increases the risk of error and reduces overall production efficiency.

[0005] Furthermore, from the perspective of installation flexibility, traditional connection methods have a low tolerance for installation errors. Once a deviation occurs during the installation process, it may lead to poor electrical connection or failure, thus affecting the normal operation of the entire electronic system. Utility Model Content

[0006] The purpose of this application is to provide a board-mounted DC connector that divides the terminals into two parts: the front end is responsible for plugging into the plug terminals, while the back end can be directly soldered to the PCB. This design not only simplifies the assembly process and reduces production costs, but also improves installation flexibility and space utilization. Furthermore, the connector can tolerate large installation errors, further enhancing its adaptability and reliability in practical applications.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] A board-mounted DC connector comprises a shell having an installation chamber therein; a limit bushing, the limit bushing being snap-fitted into the installation chamber; a movable positioning portion, one end of the movable positioning portion being slidably mounted on the limit bushing, and the other end being a front end plate, the front end plate being located at the front end of the shell; an elastic element, the elastic element being arranged between the front end of the shell and the front end plate, and the elastic force of the elastic element being utilized to maintain the front end plate in an extended state; a welding terminal, the front end of the welding terminal being mounted on the front end plate and extending forward, the rear end of the welding terminal being movably connected to a conductive sleeve, and being connected to the connecting terminal via the conductive sleeve, the front end of the welding terminal being welded to a PCB board, and the shell being sealed and mounted on a chassis by a nut and a washer.

[0009] In one embodiment, a positioning post is provided on the front side of the front end plate, and the positioning post can cooperate with the positioning hole on the PCB board for positioning.

[0010] In one embodiment, the elastic element is a wave spring.

[0011] In one embodiment, the movable positioning portion is provided with a first limiting protrusion on the outer periphery of the elastic element corresponding to the elastic element, so as to enable the elastic element to move axially.

[0012] In one embodiment, the movable positioning portion is composed of a left half and a right half, and the left half and the right half are combined with each other through docking columns and docking holes. The left half and the right half are combined to form a through groove for installing a welding terminal.

[0013] In one embodiment, the through groove corresponds to the first groove on the welding terminal, and the through groove is clamped on the first groove of the welding terminal to achieve fixed installation of the welding terminal and the movable positioning portion.

[0014] In one embodiment, the rear end of the movable positioning portion is provided with a first snap portion, and the limiting bushing is provided with a first slot corresponding to the first snap portion. The movable positioning portion is engaged with the first slot through the first snap portion, and the first slot can limit the distance that the movable positioning portion moves forward and backward.

[0015] In one embodiment, a first spring is provided in the conductive sleeve, and the conductive sleeve is connected to the welding terminal through the first spring.

[0016] In one embodiment, a second spring is provided in the conductive sleeve, and the conductive sleeve is connected to the connecting terminal via the second spring.

[0017] In one embodiment, the limiting bushing consists of a left half and a right half, and the left half and the right half are combined with each other through a docking column and a docking hole. The left half and the right half are combined to form a through hole for installing a conductive sleeve.

[0018] The beneficial effects of this application are:

[0019] (1) This application cleverly arranges an elastic element between the front end of the housing and the front end plate, utilizing the continuous action of the elastic force to ensure that the soldering terminal is always in a stable initial state, effectively preventing the soldering terminal from loosening its connection with the conductive sleeve due to external force or vibration. This design not only improves the physical stability of the connector, but also ensures the continuity and reliability of electrical signal transmission, reducing the risk of system failure caused by poor connection.

[0020] (2) This application designs the rear end of the soldering terminal to be flexibly connected to the conductive sleeve, which in turn connects to the connecting terminal. This structure enables the soldering terminal to be directly soldered to the PCB board without the need for additional cables or crimping steps. This innovation greatly simplifies the assembly process, shortens the production cycle, and reduces the variety of materials and tools required, helping to reduce overall manufacturing costs.

[0021] (3) The sliding installation design of the movable positioning portion and the limiting bushing of the present application allows the soldering terminal installed on the movable positioning portion to move synchronously back and forth within the conductive sleeve, giving the connector a certain degree of flexibility and fault tolerance during installation. Even when faced with slight position deviations on the chassis or PCB board, the connector can adapt by adjusting the position of the movable positioning portion, thereby reducing installation difficulty and improving installation efficiency.

[0022] (4) The shell of the present application is sealed with nuts and washers to ensure a tight fit between the connector and the chassis, effectively preventing external factors such as dust and moisture from damaging the internal electronic components of the connector, extending the service life of the connector and improving the environmental adaptability and reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of an onboard DC connector provided in one embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the onboard DC connector provided in one embodiment of the present application;

[0025] Figure 3 A top view of an onboard DC connector provided in one embodiment of the present application;

[0026] Figure 4 for Figure 3Cross-sectional view at AA;

[0027] Figure 5 A schematic structural diagram of an onboard DC connector housing provided in one embodiment of the present application;

[0028] Figure 6 This is a structural diagram of the left and right halves of the movable positioning portion of the onboard DC connector provided by an embodiment of the present application after being separated;

[0029] Figure 7 A schematic structural diagram of the combined left and right halves of the movable positioning portion of an onboard DC connector provided in one embodiment of the present application;

[0030] Figure 8 This is a schematic structural diagram of the left and right halves of a board-mounted DC connector limiting bushing provided by an embodiment of the present application after being separated;

[0031] Description of reference numerals:

[0032] 1. Housing; 2. Limit bushing; 3. Movable positioning part; 4. Elastic element; 5. Welding terminal; 6. Conductive sleeve; 7. Connecting terminal; 8. Power cord tail end fixing part; 9. Sealing ring; 10. Nut; 101. Washer;

[0033] 11. Installation chamber; 12. Positioning groove;

[0034] 31. Front end plate; 32. Positioning column; 33. First position-limiting protrusion; 34. Through slot; 35. First buckle portion;

[0035] 51. First groove;

[0036] 21. First slot; 22. Through hole; 23. Positioning protruding ring;

[0037] 61. First reed; 62. Second reed; 63. Second groove; DETAILED DESCRIPTION

[0038] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, a board-mounted DC connector of the present invention mainly includes a housing 1 , a limiting bushing 2 , a movable positioning portion 3 , an elastic element 4 , a welding terminal 5 and a conductive sleeve 6 .

[0040] like Figure 5As shown, the housing 1 has an internal mounting chamber 11 for accommodating other components. A retaining bushing 2 is snap-fitted into the mounting chamber 11, providing support and positioning. One end of the movable positioning portion 3 is slidably mounted on the retaining bushing 2, while the other end forms a front plate 31, which is located at the front end of the housing 1.

[0041] like Figure 4 As shown, the elastic element 4, preferably a wave spring, is disposed between the front end of the housing 1 and the front end plate 31. The elastic force of the wave spring keeps the front end plate 31 in an extended state, thereby ensuring that the welding terminal 5 is stable and not easy to loosen in the initial state.

[0042] like Figure 4 As shown, the front end of the soldering terminal 5 is mounted on the front end plate 31 and extends forward, allowing it to be soldered to corresponding contacts on the PCB. Its rear end is movably connected to a conductive sleeve 6, which in turn connects it to a connecting terminal 7 (not shown). This ensures not only an electrical connection between the soldering terminal 5 and the PCB, but also an electrical connection between the soldering terminal 5 and the connecting terminal 7 via the conductive sleeve 6. The front end of the soldering terminal 5 is soldered to the PCB Q, and the housing 1 is sealed and mounted to the chassis W using a nut 10 and a washer 101.

[0043] like Figure 4 As shown, the conductive sleeve 6 and the connecting terminal 7 are connected in such a way that the conductive sleeve 6 and the connecting terminal 7 are separate structures, and the connecting terminal 7 can be inserted into the conductive sleeve 6 for connection.

[0044] The conductive sleeve 6 and the connecting terminal 7 may be connected in such a way that the conductive sleeve 6 and the connecting terminal 7 are integrated into one structure, and the connecting terminal 7 is located at the rear end of the conductive sleeve 6 for connecting to a power line.

[0045] Due to the provision of elastic element 4 (wave spring), the maximum tolerance for the installation distance between the PCB and the enclosure is B. This means that even with a certain degree of installation tolerance, as long as the tolerance is less than B, the connector will still achieve a sealing effect, avoiding the risk of electrical failure caused by condensation on components inside the enclosure due to a leaky seal.

[0046] like Figure 6 As shown, in one embodiment, a positioning post 32 is provided on the front side of the front end plate 31. The positioning post 32 can cooperate with the positioning hole on the PCB to achieve positioning. In this way, before the soldering terminal 5 is soldered to the PCB, the positioning post 32 and the positioning hole can be used to preliminarily position the connector, thereby improving the accuracy and efficiency of soldering.

[0047] like Figure 7As shown, in one embodiment, a first position-limiting protrusion 33 is provided on the outer periphery of the movable positioning portion 3 corresponding to the elastic element 4 to facilitate axial movement of the elastic element 4. The provision of the first position-limiting protrusion 33 more reliably secures the relative position between the movable positioning portion 3 and the elastic element 4. This helps reduce loosening or displacement caused by external factors such as vibration or impact, thereby improving the stability and reliability of the entire connector.

[0048] like Figure 6 As shown, in one embodiment, the movable positioning portion 3 comprises a left half and a right half, which are joined together by a docking post and a docking hole. When combined, the left and right halves form a through-slot 34 for receiving the soldering terminal 5. The design of the docking post and the docking hole ensures precise alignment of the left and right halves when assembled. This precise alignment is crucial for forming a through-slot 34 with accurate dimensions and a regular shape, thereby ensuring that the soldering terminal 5 can be stably and reliably installed in the through-slot 34.

[0049] like Figure 6 As shown, in one embodiment, the through slot 34 corresponds to the first groove 51 on the welding terminal 5 , and the through slot 34 is clamped on the first groove 51 of the welding terminal 5 to achieve fixed installation of the welding terminal 5 and the movable positioning portion 3 .

[0050] like Figure 6 As shown, in one embodiment, the rear end of the movable positioning portion 3 is provided with a first snap portion 35, and the limiting bushing 2 is provided with a first slot 21 corresponding to the first snap portion 35. The movable positioning portion 3 is engaged with the first slot 21 through the first snap portion 35, and the first slot 21 can limit the distance that the movable positioning portion 3 moves forward and backward.

[0051] like Figure 4 As shown, in one embodiment, a first spring 61 is provided in the conductive sleeve 6 , and the conductive sleeve 6 is connected to the welding terminal 5 via the first spring 61 .

[0052] like Figure 4 As shown, in one embodiment, a second spring 62 is provided in the conductive sleeve 6 , and the conductive sleeve 6 is connected to the connecting terminal 7 via the second spring 62 .

[0053] The reed is elastic and can ensure stable electrical contact during the connection process. Whether it is the welding terminal 5 or the connecting terminal 7, the reed can adapt to slight position deviations through its elastic deformation, thereby maintaining stable transmission of electrical signals.

[0054] like Figure 8As shown, in one embodiment, the limiting bushing 2 is composed of a left half and a right half, and the left half and the right half are combined with each other through a docking column and a docking hole. After the left half and the right half are combined, a through hole 22 for installing the conductive sleeve 6 is formed.

[0055] like Figure 8 As shown, the through hole 22 corresponds to the second groove 63 on the conductive sleeve 6 , and the through hole 22 is clamped in the second groove 63 on the conductive sleeve 6 to achieve fixed installation of the conductive sleeve 6 and the limiting bushing 2 .

[0056] like Figure 8 As shown, a positioning protrusion 23 is extended backward from the rear end of the limiting bushing 2 , and a positioning groove 12 is provided in the housing 1 corresponding to the positioning protrusion 23 .

[0057] like Figure 4 As shown, a power cord tail end fixing portion 8 is provided at the rear end of the shell 1, and the shell 1 is connected to the power cord tail end fixing portion 8 by a snap buckle, and the tail end of the shell 1 is sealed and installed in the power cord tail end fixing portion 8 through a sealing ring 9.

[0058] During the assembly process, first proceed to Step A: Solder the onboard DC connector to the PCB via solder terminals 5. Next, remove nuts 10 (shown in the figure but not installed at this step) and install the onboard DC connector, with the PCB attached, into the mounting holes of the chassis' mounting panel. Next, proceed to Step C: Secure the PCB. Finally, proceed to Step D: Tighten the nuts to secure the onboard DC connector to the mounting panel, completing the assembly process.

[0059] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0060] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0061] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in orders other than those illustrated or described herein. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or apparatus.

[0062] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of this application.

Claims

1. A board-mounted DC connector, characterized in that: include a housing having a mounting chamber therein; A limiting bushing, the limiting bushing being snap-fitted into the installation chamber; A movable positioning portion, one end of which is slidably mounted on the limiting bushing, and the other end of which is a front end plate located at the front end of the housing; an elastic element, the elastic element being disposed between the front end of the housing and the front end plate, and utilizing the elastic force of the elastic element to keep the front end plate in an extended state; The welding terminal has a front end mounted on the front end plate and extends forward, and a rear end movably connected to the conductive sleeve and connected to the connecting terminal through the conductive sleeve. The front end of the welding terminal is welded on the PCB board, and the shell is sealed and installed on the chassis through nuts and washers.

2. The onboard DC connector according to claim 1, characterized in that: A positioning post is provided on the front side of the front end plate, and the positioning post can cooperate with the positioning hole on the PCB board for positioning.

3. The onboard DC connector according to claim 1, wherein: The elastic element is a wave spring.

4. The board-mounted DC connector according to claim 1, wherein: The movable positioning portion is provided with a first limiting protrusion on the outer periphery of the elastic element corresponding to the elastic element, so as to enable the elastic element to move axially.

5. The onboard DC connector according to claim 1, characterized in that: The movable positioning portion consists of a left half and a right half, which are combined with each other through a docking column and a docking hole. The left half and the right half are combined to form a through groove for installing a welding terminal.

6. The board-mounted DC connector according to claim 5, characterized in that: The through groove corresponds to the first groove on the welding terminal, and the through groove is clamped on the first groove of the welding terminal to achieve fixed installation of the welding terminal and the movable positioning part.

7. The board-mounted DC connector according to claim 1, characterized in that: The rear end of the movable positioning part is provided with a first snap part, and the limiting bushing is provided with a first slot corresponding to the first snap part. The movable positioning part is engaged with the first slot through the first snap part, and the first slot can limit the distance that the movable positioning part moves forward and backward.

8. The board-mounted DC connector according to claim 1, characterized in that: A first spring is provided in the conductive sleeve, and the conductive sleeve is connected to the welding terminal through the first spring.

9. The onboard DC connector according to claim 1, characterized in that: A second spring is provided in the conductive sleeve, and the conductive sleeve is connected to the connecting terminal via the second spring.

10. The board-mounted DC connector according to claim 1, characterized in that: The limiting bushing consists of a left half and a right half, which are combined with each other through a docking column and a docking hole. The left half and the right half are combined to form a through hole for installing a conductive sleeve.

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