An on-board connector

Abstract

The utility model provides a kind of on-board connector, comprising: insulating shell, conducting terminal and insulating body;Several accommodating grooves are provided side by side on insulating shell, conducting terminal is fixed in accommodating groove, adjacent terminal is evenly arranged with interval, each conducting terminal has welding end and contact end;When connector is installed in circuit board in the way of sinking plate, part of insulating body is arranged between conducting terminal and circuit board conductive layer, to increase creepage distance, improve insulation performance;Insulating body is provided with groove structure, so that welding end is mutually insulated and isolated;T-shaped metal fixing piece is provided on both sides of connector, for welding and fixing on circuit board, to improve overall stability;The welding end of the conducting terminal can be a surface mount structure with a bend, the contact end is a spring sheet with a plating layer to enhance contact reliability and wear resistance. The utility model has reasonable structure, high insulation and reliability, and is suitable for aluminum substrate and other occasions.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a board connector. Background Technology

[0002] As electronic devices evolve towards miniaturization and high integration, the connector structure on circuit boards is also continuously optimized. In particular, board-to-board connectors are widely used in communication equipment, automotive electronics, industrial control, and other fields. Board-to-board connectors are typically mounted on the surface of a circuit board to enable electrical connections between different circuit boards or modules.

[0003] In practical applications, to improve the installation stability and electrical performance of connectors, recessed mounting (i.e., the connector portion is recessed into the circuit board) is often used to reduce the overall height and save space. However, this mounting method also brings new challenges, especially in terms of electrical safety. For example, the creepage distance between the conductive terminals and the conductive layer of the circuit board may be insufficient, easily leading to electrical breakdown or short circuits, especially in applications using metal substrates (such as aluminum substrates) or high-voltage applications.

[0004] Furthermore, existing connectors also have certain shortcomings in terms of insulation isolation between conductive terminals, soldering reliability, and structural assembly stability. For example, there is a lack of effective insulation isolation structure between the soldered ends of conductive terminals, which easily leads to solder bridging during the soldering process; the fixing method between the connector body and the insulating components is not firm, making them prone to loosening or falling off; and the electrical connection reliability between the conductive terminals and the circuit board is not high, which can easily lead to problems such as poor contact during long-term use.

[0005] The shortcomings of existing technology: 1. Insufficient creepage distance, resulting in poor electrical safety. In recessed mounting structures, the creepage distance between conductive terminals and the conductive layer of the circuit board is relatively short. Especially when using conductive substrates such as aluminum substrates, electrical breakdown or short circuits can easily occur between the conductive terminals and the substrate, posing a safety hazard.

[0006] 2. Insufficient insulation between conductive terminals In existing connectors, the solder ends of conductive terminals are usually exposed or closely spaced, which can easily lead to solder bridging during soldering, resulting in short circuits between terminals and affecting electrical performance.

[0007] Therefore, existing technologies have shortcomings and need further improvement. Utility Model Content

[0008] In view of the problems existing in the prior art, this utility model provides a board connector.

[0009] To achieve the above objectives, the specific solution of this utility model is as follows: This utility model provides a board connector, comprising: Insulating outer casing; Several conductive terminals are disposed on an insulating housing; An insulating shell has several receiving slots arranged side by side on it. Each conductive terminal is fixedly installed in one receiving slot, and adjacent conductive terminals are evenly spaced apart. Each conductive terminal has a solder end for electrical connection to the circuit board and a contact end for electrical connection to the connector. An insulating body is disposed on an insulating shell and located on the welding end side of the conductive terminal; When the connector is mounted on the circuit board in a recessed manner, a portion of the insulating body is disposed between the conductive terminals and the conductive layer of the circuit board to increase the creepage distance between the conductive terminals and the conductive layer of the circuit board.

[0010] Furthermore, the upper side of the insulating body is provided with a plurality of groove structures, and the welding end of each conductive terminal is disposed in a groove structure to provide insulation between the welding ends of the conductive terminals.

[0011] Furthermore, the insulating shell is provided with a mounting groove on the side of the welding end of the conductive terminal; A boss structure is provided on each side of the mounting slot; A locking block is provided on each of the two sides of the insulating body; When the insulating body is inserted into the mounting groove of the insulating shell, the locking blocks on both sides of the insulating body engage with the protrusion structures on both sides of the mounting groove, thereby fixing the insulating body to the insulating shell.

[0012] Furthermore, the connector also includes a fixing structure disposed on the left and right sides of the insulating body for fixing the connector to the circuit board; The fixing structure includes two T-shaped metal fasteners, one end of which is embedded in the insulating shell, and the other end extends to the circuit board and is welded thereto.

[0013] Furthermore, the soldering end of the conductive terminal is a surface mount structure formed by bending, used for soldering onto the pads of the circuit board.

[0014] Furthermore, the contact end of the conductive terminal is an elastic sheet structure to provide reliable elastic contact.

[0015] Furthermore, the receiving groove of the insulating shell is provided with a foolproof part on the side of the welding end of the conductive terminal, the foolproof part being used to restrict the insertion direction of the conductive terminal.

[0016] Furthermore, the contact surface of the conductive terminal has a plating layer to improve conductivity and wear resistance.

[0017] Furthermore, the circuit board is an aluminum substrate, and the insulating body is used to electrically isolate the conductive terminals from the conductive layer of the aluminum substrate. At the same time, the groove structure on the upper side of the insulating body realizes electrical isolation between the conductive terminals.

[0018] The technical solution of this utility model has the following beneficial effects: 1. Significantly increases creepage distance, improving electrical safety. By introducing an insulating body between the conductive terminals and the conductive layer of the circuit board, the creepage distance between the two is effectively extended. Especially when using conductive substrates such as aluminum substrates, it can significantly reduce the risk of electrical breakdown or short circuit and meet the safety requirements of high-voltage application scenarios.

[0019] 2. To achieve independent insulation and isolation between conductive terminals, preventing solder bridging. The upper side of the insulating body is provided with a groove structure, in which the welding end of each conductive terminal is independently embedded, forming a physical isolation barrier. This effectively prevents solder bridging during the welding process, avoids short circuits between terminals, and improves welding quality and electrical reliability.

[0020] 3. The structure is sturdy and has strong vibration resistance. The insulating body and the insulating shell adopt a two-way snap-fit ​​structure of snap blocks and bosses, which enables tool-free quick assembly. The snap-fit ​​force is large and it is not easy to loosen, which significantly enhances the structural stability of the connector under vibration, impact and other working conditions and extends its service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of existing technology; Figure 2 This is a top-view perspective view of the present invention; Figure 3 This is a perspective view of the present invention from a downward angle; Figure 4 This is a side view of the present invention after the circuit board has been removed; Figure 5 This is an exploded view of the present invention from a top-down perspective; Figure 6 This is an exploded view of the present invention from a low angle; Figure 7 This is a top-view perspective view of the insulating shell of this utility model; Figure 8 This is a top-view perspective view of the insulating shell of this utility model; Figure 9 This is a perspective view of the insulating body of this utility model.

[0022] Attached image captions: 1. Insulating shell; 2. Receiving groove; 3. Conductive terminal; 4. Welding end; 5. Contact end; 6. Insulating body; 7. Groove structure; 8. Circuit board; 9. Mounting groove; 10. Boss structure; 11. Locking block; 12. Metal fastener; 13. Foolproof part. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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; 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 utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "front," "rear," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] Combination Figures 2-9 As shown, this utility model provides a board connector, comprising: An insulating outer shell 1, on which several receiving slots 2 are arranged side by side; A number of conductive terminals 3 are fixedly disposed in a receiving groove 2, and adjacent conductive terminals 3 are evenly spaced apart. Each conductive terminal 3 has a solder end 4 for electrical connection with the circuit board 8 and a contact end 5 for electrical connection with the connector; An insulating body 6 is disposed on an insulating outer shell 1 and located on the side of the welding end 4 of the conductive terminal 3; When the connector is mounted on the circuit board 8 in a recessed manner, a portion of the insulating body 6 is disposed between the conductive terminal 3 and the conductive layer of the circuit board 8 to increase the creepage distance between the conductive terminal 3 and the conductive layer of the circuit board 8.

[0028] The upper side of the insulating body 6 is provided with a plurality of groove structures 7, and the welding end 4 of each conductive terminal 3 is disposed in a groove structure 7 to allow the welding ends 4 of the conductive terminals 3 to be insulated from each other.

[0029] The insulating shell 1 is provided with a mounting groove 9 on one side of the welding end 4 of the conductive terminal 3; A boss structure 10 is provided on each side of the mounting slot 9; A locking block 11 is provided on each of the two sides of the insulating body 6; When the insulating body 6 is inserted into the mounting groove 9 of the insulating shell 1, the locking blocks 11 on both sides of the insulating body 6 are engaged with the boss structures 10 on both sides of the mounting groove 9, thereby fixing the insulating body 6 to the insulating shell 1.

[0030] The connector also includes a fixing structure, which is disposed on the left and right sides of the insulating body 6 for fixing the connector to the circuit board 8. The fixing structure includes two T-shaped metal fasteners 12, one end of which is embedded in the insulating shell 1, and the other end extends to the circuit board 8 and is welded to it.

[0031] The welding end 4 of the conductive terminal 3 is a surface mount structure formed by bending, used for welding onto the pads of the circuit board 8.

[0032] The contact end 5 of the conductive terminal 3 is an elastic sheet structure to provide reliable elastic contact.

[0033] The receiving groove 2 of the insulating shell 1 is provided with a foolproof part 13 on one side of the welding end 4 of the conductive terminal 3. The foolproof part 13 is used to restrict the insertion direction of the conductive terminal 3.

[0034] The contact end 5 of the conductive terminal 3 has a plating layer to improve conductivity and wear resistance.

[0035] The circuit board 8 is an aluminum substrate. The insulating body 6 is used to electrically isolate the conductive terminals 3 from the conductive layer of the aluminum substrate 8. At the same time, the groove structure 7 on the upper side of the insulating body 6 realizes the electrical isolation between the conductive terminals 3.

[0036] The principle of this utility model is as follows: The connector on this board, through the cooperation of components such as the insulating shell 1, conductive terminals 3, insulating body 6, and fixing structure, achieves reliable electrical connection and insulation isolation between the circuit board 8 and the plug-in. The specific working process is as follows: 1. Electrical connection principle of conductive terminal 3 Each conductive terminal 3 has a welding end 4 at one end and a contact end 5 at the other end; The welding end 4 is fixedly welded to the pads of the circuit board 8 by surface mounting (bent structure) to realize the signal input / output of the circuit board 8; The contact end 5 is designed as an elastic sheet structure. When the connector is inserted, it relies on the elastic force to form a stable mechanical crimp and electrical conduction with the connector. At the same time, the surface coating further improves the conductivity and wear resistance.

[0037] 2. Isolation and creepage distance control of the insulating body 6 The insulating body 6 is installed on one side of the solder end 4 of the conductive terminal 3. When the plate is installed, part of it is located between the terminal and the conductive layer of the circuit board 8. This structure extends the creepage distance between the terminals and the 8 conductive layers of the circuit board, effectively improving electrical safety; The groove structure 7 provided on the insulating body 6 further isolates the welding ends 4 of adjacent conductive terminals 3, preventing short circuits or leakage between terminals, and is especially suitable for environments with highly conductive substrates such as aluminum substrates 8.

[0038] 3. Insulating housing 1 and foolproof design The insulating housing 1 is provided with several receiving grooves 2 for positioning and fixing the conductive terminals 3, and maintaining a uniform spacing between the terminals; The outer shell has mounting grooves 9 and boss structures 10 on the welding end 4 sides, which, together with the locking blocks 11 on the insulating body 6, enable the body to be stably installed. The error prevention part 13 is designed on one side of the receiving slot 2 to ensure that the terminal can only be inserted in the specified direction, avoid assembly errors, and ensure product consistency.

[0039] 4. Fixed structure and overall stability T-shaped metal fasteners 12 are provided on both sides of the connector. One end of the fastener is embedded in the insulating shell 1, and the other end is soldered to the circuit board 8. This design not only provides additional mechanical holding force but also shares the force on the terminals, enhancing the overall mechanical shock resistance and long-term reliability of the connector.

[0040] 5. Synergistic effect of connection and insulation During operation, when the connector is inserted, it presses against the terminal contact end 5 to form an electrical path; The insulating body 6 and the groove 7 isolate each other to ensure that there is no interference between the various paths, while extending the creepage path and improving the withstand voltage performance; The housing and mounting structure ensure a secure connection between the terminals and the circuit board 8, maintaining a stable connection even in environments with vibration, thermal expansion and contraction.

[0041] Summarize Electrical transmission is achieved through conductive terminals 3, while the insulating body 6 and the groove structure 7 provide insulation and increase creepage distance. The foolproof part 13 and the fixing structure (including metal fasteners 12) ensure correct installation orientation and overall stability. Ultimately, this achieves an electrical connection that is reliable in electrical performance, has enhanced insulation, high mechanical strength, and is suitable for recessed installation.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A board connector, characterized in that, include: Insulating outer casing; Several conductive terminals are disposed on an insulating housing; Each conductive terminal has a solder end for electrical connection to the circuit board and a contact end for electrical connection to the connector. An insulating body is disposed on an insulating shell and located on the welding end side of the conductive terminal; When the connector is mounted on the circuit board in a recessed manner, a portion of the insulating body is disposed between the conductive terminals and the conductive layer of the circuit board to increase the creepage distance between the conductive terminals and the conductive layer of the circuit board.

2. The board connector according to claim 1, characterized in that, An insulating shell has several receiving slots arranged side by side on it. Each conductive terminal is fixedly installed in one receiving slot, and adjacent conductive terminals are evenly spaced.

3. The board connector according to claim 1, characterized in that, The upper side of the insulating body is provided with several groove structures, and the welding end of each conductive terminal is disposed in a groove structure to provide insulation between the welding ends of the conductive terminals.

4. The board connector according to claim 1, characterized in that, The insulating shell has a mounting groove on the side of the welding end of the conductive terminal. A boss structure is provided on each side of the mounting slot; A locking block is provided on each of the two sides of the insulating body; When the insulating body is inserted into the mounting groove of the insulating shell, the locking blocks on both sides of the insulating body engage with the protrusion structures on both sides of the mounting groove, thereby fixing the insulating body to the insulating shell.

5. The board connector according to claim 1, characterized in that, The connector also includes a fixing structure disposed on the left and right sides of the insulating body for fixing the connector to the circuit board. The fixing structure includes two T-shaped metal fasteners, one end of which is embedded in the insulating shell, and the other end extends to the circuit board and is welded thereto.

6. The board connector according to claim 1, characterized in that, The soldering end of the conductive terminal is a surface mount structure formed by bending, used for soldering onto the pads of the circuit board.

7. The board connector according to claim 1, characterized in that, The contact end of the conductive terminal has an elastic sheet structure to provide reliable elastic contact.

8. The board connector according to claim 1, characterized in that, The receiving groove of the insulating shell is provided with a foolproof part on one side of the welding end of the conductive terminal, and the foolproof part is used to restrict the insertion direction of the conductive terminal.

9. The board connector according to claim 1, characterized in that, The contact surface of the conductive terminal has a plating layer to improve conductivity and wear resistance.

10. The board connector according to claim 3, characterized in that, The circuit board is an aluminum substrate, and the insulating body is used to electrically isolate the conductive terminals from the conductive layer of the aluminum substrate. At the same time, the groove structure on the upper side of the insulating body realizes the electrical isolation between the conductive terminals.

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