A plastic connector

Abstract

The application discloses a plastic connector, comprising a plug assembly, a socket assembly and a fastener, the plug assembly can be plugged into the socket assembly along a plug-in direction, the socket assembly comprises a socket shell and a socket terminal arranged in the socket shell, the plug assembly comprises a plug shell and a conductive row, the plug shell is plugged into the socket shell, the conductive row is at least partially arranged inside the plug shell and can be electrically connected with the socket terminal, the plug shell is provided with an opening for inserting the fastener, so that the fastener can pass through the conductive row and be locked with the socket terminal, a first sealing ring is arranged between the fastener and the inner wall of the plug shell, and a flat spring washer capable of sealingly contacting the surface of the conductive row is further arranged on the fastener. The application effectively improves the sealing characteristics such as waterproof and dustproof of the connector and prolongs the service life of the connector.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and more particularly to a plastic connector. Background Technology

[0002] In the field of electrical equipment, product structure design plays a crucial role in the performance, safety, and reliability of the equipment. Currently, most existing product structure designs adopt a relatively basic installation method. Specifically, during installation, the socket is first fixed to the pre-set mounting holes in the equipment enclosure using screws or clips to ensure its stability. Inside the socket is a metal post with threaded holes. This metal post serves as a key structure for connecting subsequent conductive components. Copper busbars are directly bolted into the threaded holes of the metal post, thus forming an electrical conduction path and enabling power transmission. After completing these steps, a plastic protective cover is fastened to provide basic protection against electric shock, ensuring a certain level of electrical safety for the user.

[0003] However, with the increasing complexity and diversity of industrial environments, existing product structural designs have revealed numerous shortcomings in dealing with harsh working conditions. In particular, their dustproof and waterproof performance is extremely weak, failing to meet actual usage requirements. In dusty industrial environments, such as mines, cement plants, and flour mills, fine dust can easily seep into the interior through the gaps between components of existing products. Similarly, under harsh weather conditions such as continuous rain, moisture can easily penetrate the product. Long-term accumulation of dust and moisture can have a serious negative impact on connectors, leading to performance degradation, such as poor contact and short circuits, which in turn affects the normal operation of the entire electrical equipment and may even cause safety accidents, resulting in significant losses to production and daily life. Utility Model Content

[0004] The purpose of this application is to provide a plastic connector that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On one hand, a plastic connector is provided, comprising: a plug assembly, a socket assembly, and a fastener. The plug assembly is insertable and detachable from the socket assembly in a plugging / unplugging direction. The socket assembly includes a socket housing and socket terminals disposed within the socket housing. The plug assembly includes a plug housing and a conductive bar. The plug housing is insertable and detachable from the socket housing. The conductive bar is at least partially disposed inside the plug housing and is electrically connected to the socket terminals. The plug housing has an opening for the fastener to be inserted, allowing the fastener to pass through the conductive bar and engage with the socket terminals for locking. A first sealing ring is provided between the fastener and the inner wall of the plug housing. The fastener also has a flat spring washer capable of sealing with the surface of the conductive bar.

[0007] Furthermore, the plug assembly also includes a dust cover that is sealed and installed at the opening.

[0008] Furthermore, a concave cavity is formed between the socket terminal and the socket housing, and the concave cavity is filled with sealant.

[0009] Furthermore, the conductive bar is connected to the socket terminal at a 90° angle, and the plug housing is rotatable relative to the socket terminal.

[0010] Furthermore, the inner wall of the plug housing is provided with an elastic buckle, and the socket terminal is provided with an annular groove that engages with the elastic buckle, so that the plug housing is locked after rotating relative to the socket terminal.

[0011] Furthermore, the side of the plug housing extends vertically outward to form an extension portion, and an installation channel is formed within the extension portion. The conductive bar is inserted into the plug housing along the installation channel.

[0012] Furthermore, a plastic tail cap is installed at the end of the extension that is away from the plug housing.

[0013] Furthermore, a second sealing ring is provided between the conductive busbar and the mounting channel.

[0014] Furthermore, a third sealing ring is provided between the inner wall surface of the plug housing and the outer wall surface of the socket housing.

[0015] Furthermore, the outer peripheral surface of the socket housing is provided with a mounting boss, which can be installed on the mounting plate by screws, and a fourth sealing ring is provided between the mounting boss and the mounting plate.

[0016] The beneficial effects of this application are as follows: By setting a first sealing ring between the fastener and the inner wall of the plug housing, and setting a flat spring washer on the fastener to seal against the surface of the conductive busbar, a double-sealing protection system is constructed. The first sealing ring can effectively prevent dust and moisture from entering the connector from the gap between the fastener and the inner wall of the plug housing, while the flat spring washer further seals the connection between the fastener and the conductive busbar, preventing dust and moisture from entering from this critical connection point. This double-sealing design greatly enhances the dustproof and waterproof performance of the connector, enabling it to better adapt to harsh working conditions such as dusty industrial environments and continuous rain. Fine dust and moisture are difficult to penetrate into the connector, effectively avoiding connector performance degradation problems caused by long-term accumulation of dust and moisture, such as poor contact and short circuits, thereby ensuring the stable operation of electrical equipment, improving equipment lifespan and safety, and reducing production losses and safety risks caused by equipment failure. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the plastic connector described in the embodiments of this application;

[0019] Figure 2 This is a cross-sectional view of the plastic connector described in the embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the fastener described in the embodiments of this application;

[0021] Figure 4 This is a schematic diagram of the plug housing described in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the socket housing described in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the socket terminals described in an embodiment of this application.

[0024] In the diagram: 1. Plug assembly; 101. Plug housing; 102. Conductive bar; 103. Dust cover; 104. Plastic tail cap; 105. Elastic snap; 1011. Extension; 2. Socket assembly; 201. Socket housing; 202. Socket terminal; 203. Concave cavity; 204. Mounting boss; 2021. Annular groove; 3. Fastener; 4. Mounting plate; 5. Screw; 6. First sealing ring; 7. Flat spring washer; 8. Second sealing ring; 9. Third sealing ring; 10. Fourth sealing ring. Detailed Implementation

[0025] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, unless otherwise expressly 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 invention based on the specific circumstances.

[0027] In this application, unless otherwise expressly 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 being 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 being 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.

[0028] like Figures 1-6 As shown, this embodiment provides a plastic connector, including: a plug assembly 1, a socket assembly 2, and a fastener 3. The plug assembly 1 can be inserted into and removed from the socket assembly 2 in the insertion / removal direction. The socket assembly 2 includes a socket housing 201 and a socket terminal 202 disposed within the socket housing 201. The plug assembly 1 includes a plug housing 101 and a conductive bar 102. The plug housing 101 is inserted into and removed from the socket housing 201. The conductive bar 102 is at least partially disposed inside the plug housing 101 and can be electrically connected to the socket terminal 202. The plug housing 101 has an opening for the fastener 3 to be inserted, so that the fastener 3 can pass through the conductive bar 102 and engage with the socket terminal 202 for locking. A first sealing ring 6 is provided between the fastener 3 and the inner wall of the plug housing 101. The fastener 3 also has a flat spring washer 7 that can contact and seal with the surface of the conductive bar 102.

[0029] Based on the above scheme, the structure includes a plug assembly 1, a socket assembly 2, and fasteners 3. The plug assembly 1 can be plugged into and unplugged from the socket assembly 2 in the insertion / removal direction. The socket assembly 2 has a socket housing 201 and socket terminals 202 disposed therein. The plug assembly 1 has a plug housing 101 and a conductive bar 102. The plug housing 101 and the socket housing 201 are plugged into and unplugged. The conductive bar 102 is partially placed inside the plug housing 101 and can be electrically connected to the socket terminals 202 to realize the power transmission function.

[0030] For dustproof and waterproof design, an opening for fastener 3 to be inserted is provided on the plug housing 101. Fastener 3 passes through the conductive busbar 102 and engages with the socket terminal 202 to lock in place, thereby securing the connector components. A first sealing ring 6 is provided between the fastener 3 and the inner wall of the plug housing 101. When the fastener 3 is inserted and locked, the first sealing ring 6 is compressed and deformed, tightly filling the gap between the fastener 3 and the inner wall of the plug housing 101, effectively preventing dust and moisture from entering the connector from this area. Simultaneously, a spring washer 7 is provided on the fastener 3. When the fastener 3 is locked, the spring washer 7 will be in close contact with the surface of the conductive busbar 102. Due to the good elasticity and sealing properties of the spring washer 7, it can further seal the connection between the fastener 3 and the conductive busbar 102, preventing dust and moisture from entering from here, thereby comprehensively improving the dustproof and waterproof performance of the connector.

[0031] The plastic connector provided in this application, with its unique and ingenious design, brings outstanding benefits. Regarding dust prevention, traditional connectors, when exposed to dusty industrial environments, are easily penetrated by fine dust particles through the gaps between components. Long-term accumulation leads to connector performance degradation and a series of problems such as poor contact. However, the connector in this application, by setting a first sealing ring 6 between the fastener 3 and the inner wall of the plug housing 101, forms a reliable dust barrier when the fastener 3 is locked in place, effectively preventing dust from entering the connector from this area. Simultaneously, the flat spring washer 7 on the fastener 3 makes tight contact with the surface of the conductive busbar 102, further blocking possible dust intrusion paths. This dual dustproof design makes it difficult for dust to enter, greatly improving the connector's adaptability and stability in dusty environments and ensuring the quality and reliability of the electrical connection.

[0032] Regarding waterproofing, under harsh conditions such as continuous rain, moisture can easily penetrate the interior of traditional connectors, causing short circuits and other safety hazards, affecting the normal operation of the equipment. The first sealing ring 6 of this application not only prevents dust but also effectively blocks moisture from entering through the gap between the fastener 3 and the inner wall of the plug housing 101. The tight contact seal between the flat spring washer 7 and the surface of the conductive bar 102 also provides strong protection against moisture intrusion, forming a robust waterproof system. Even in rainy environments, moisture has difficulty penetrating these two lines of defense to enter the connector, thus avoiding connector performance degradation and equipment failure caused by water ingress. This significantly improves the waterproof performance of the connector and enhances the operational safety of the equipment under harsh weather conditions.

[0033] The fastener 3 employs an injection molding process for the irregularly shaped screw 5, forming a complete insulating layer on its surface. This fundamentally eliminates the risk of electric shock during assembly, significantly improving operational safety. An optimized balance is achieved between insulation performance and mechanical strength, enabling it to withstand torsional impacts during installation while maintaining stable insulation characteristics over the long term.

[0034] Preferably, the plug assembly 1 further includes a dust cover 103 sealed and installed at the opening. When the connector is not in use or needs to be placed in a harsh environment for a long time, the dust cover 103 is tightly installed at the opening of the plug housing 101. Because the dust cover 103 and the opening are sealed, they fit tightly without any obvious gaps. In this way, dust, debris, and other contaminants from the external environment cannot enter the connector through the opening, thus providing a relatively closed and clean space for key components inside the connector, such as the busbar 102 and the socket terminal 202, effectively preventing dust and other contaminants from corroding and interfering with the internal components.

[0035] Simultaneously, a concave cavity 203 is formed between the socket terminal 202 and the socket housing 201, and the concave cavity 203 is filled with sealant. When liquid sealant is filled into the concave cavity 203, due to the good fluidity of the liquid sealant, it can, by its own properties, under the action of gravity and possible auxiliary filling processes, evenly and fully penetrate into every micro-gap between the socket housing 201 and the socket terminal 202. Over time, the liquid sealant gradually solidifies, its molecular structure changes, and it forms a stable solid substance. The solidified sealant adheres tightly to the surfaces of the socket housing 201 and the socket terminal 202, firmly bonding them together, while completely filling all micro-gap, thereby constructing a seamless sealing barrier between the socket terminal 202 and the socket housing 201, achieving a one-sided airtight function, and effectively preventing the intrusion of harmful substances such as dust, moisture, and even corrosive gases from the external environment.

[0036] Furthermore, the conductive busbar 102 is connected to the socket terminal 202 at a 90° angle, and the plug housing 101 can rotate relative to the socket terminal 202. Since the plug housing 101 can rotate 360 ​​degrees relative to the socket housing 201, after the conductive busbar 102 and the socket terminal 202 complete rotational engagement, the rotation of the plug housing 101 will cause the conductive busbar 102 to move in a 360-degree circular motion around the socket terminal 202. This movement allows the conductive busbar 102 to exit in any direction within 360 degrees according to actual needs, breaking the limitation of fixed exit direction in traditional connectors. Operators can flexibly adjust the exit direction of the conductive busbar 102 according to factors such as equipment layout and wiring routing to meet diverse installation and usage requirements.

[0037] Furthermore, the inner wall of the plug housing 101 is provided with an elastic latch 105, and the socket terminal 202 is provided with an annular groove 2021 that engages with the elastic latch 105, so that the plug housing 101 locks after rotating relative to the socket terminal 202. During connection, the plug assembly 1 and socket assembly 2 are first aligned, at which point the elastic latch 105 is positioned within the annular groove 2021. Next, the operator rotates the plug housing 101. Since the plug housing 101 can rotate 360 ​​degrees relative to the socket terminal 202, during rotation, the elastic latch 105 moves within the annular groove 2021 as the plug housing 101 rotates. The movement of the elastic latch 105 depends on the force acting on the plug housing 101 to overcome the friction between the elastic latch 105 and the annular groove 2021. When rotated to a specific position, the elastic buckle 105 aligns with the annular groove 2021 at that specific position. Due to its good elasticity, the elastic buckle 105 generates a spring force in the direction of the annular groove 2021. The friction between the elastic buckle 105 and the annular groove 2021 locks the plug housing 101 and the socket terminal 202, forming a stable locking state without external force. This prevents the plug housing 101 from accidentally rotating or loosening due to external factors (such as vibration, collision, etc.) during subsequent use, ensuring the stability and reliability of the connection between the conductive bar 102 and the socket terminal 202.

[0038] In some embodiments, the side of the plug housing 101 extends vertically outward to form an extension 1011, and an installation channel is formed within the extension 1011. The conductive bus 102 is inserted into the plug housing 101 along the installation channel. During connector assembly, the conductive bus 102, as a key component for power or signal transmission, is inserted along the pre-designed installation channel. Because the installation channel has a clear orientation and size specifications within the extension 1011, the conductive bus 102 can be accurately inserted into the plug housing 101 along a predetermined path. During insertion, the inner wall of the installation channel guides and positions the conductive bus 102, ensuring that it accurately reaches the predetermined installation position and achieves good docking and cooperation with other related components inside the plug housing 101 (such as the socket terminal 202 that may be connected later). At the same time, the presence of the extension 1011 also provides a certain degree of protection and support for the conductive bus 102, keeping it stable during insertion and subsequent use.

[0039] Specifically, a plastic end cap 104 is installed at the end of the extension 1011 opposite to the plug housing 101. In the connector assembly process, after the conductive busbar 102 is accurately inserted into the plug housing 101 along the mounting channel and connected to relevant components (such as the socket terminal 202), the plastic end cap 104 is installed at the end of the extension 1011. The plastic end cap 104 is typically connected to the extension 1011 using specific snap-fit, threaded, or interference fit methods to ensure a secure and reliable installation. The installed plastic end cap 104 provides comprehensive protection and sealing for the conductive busbar 102 within the extension 1011, preventing interference and damage from various external environmental factors.

[0040] Meanwhile, a second sealing ring 8 is provided between the conductive bus 102 and the mounting channel. In various practical environments, connectors often face challenges from complex and ever-changing external factors. Dust, moisture, liquids, and other substances, once they penetrate the plug housing 101, may cause serious damage to the conductive bus 102. Dust adhering to the surface of the conductive bus 102 increases its resistance, affecting the transmission efficiency of power or signals; moisture and liquids may cause oxidation and corrosion of the conductive bus 102, reducing its conductivity and even causing short circuits and other faults, seriously threatening the normal operation and service life of the connector. The second sealing ring 8 can tightly fill the tiny gaps between the conductive bus 102 and the mounting channel, forming a reliable seal and effectively preventing the intrusion of external substances. It provides a clean, dry, and stable internal environment for the conductive bus 102, ensuring that the conductive bus 102 always maintains a good working condition, greatly improving the reliability and stability of the connector.

[0041] In addition, a third sealing ring 9 is provided between the inner wall of the plug housing 101 and the outer wall of the socket housing 201. When the plug and socket are mated, as the plug housing 101 gradually approaches the socket housing 201, the third sealing ring 9 is compressed between them. Since the third sealing ring 9 is usually made of a material with good elasticity, it will undergo elastic deformation after being compressed, tightly fitting against the irregular surfaces of the inner wall of the plug housing 101 and the outer wall of the socket housing 201, filling any tiny gaps and unevenness that may exist between them, thereby forming a continuous, closed sealed space that effectively isolates the internal electrical connection parts from the external environment.

[0042] It is worth mentioning that the outer peripheral surface of the socket housing 201 is provided with a mounting boss 204. The mounting boss 204 can be mounted to the mounting plate 4 by screws 5, and a fourth sealing ring 10 is provided between the mounting boss 204 and the mounting plate 4. This mounting boss 204 has a specific shape and size, and its surface is usually provided with threaded holes for mounting screws 5. When it is necessary to fix the connector to the mounting plate 4, the operator aligns the mounting boss 204 of the socket housing 201 with the corresponding mounting position on the mounting plate 4, and then uses screws 5 to pass through the through holes on the mounting plate 4 and screw them into the threaded holes of the mounting boss 204. As the screws 5 are tightened, the gap between the mounting boss 204 and the mounting plate 4 gradually decreases, and the fourth sealing ring 10 provided between the mounting boss 204 and the mounting plate 4 will be compressed. The fourth sealing ring 10 is generally made of a material with good elasticity. When compressed, it will undergo elastic deformation and tightly fill the tiny gap between the mounting boss 204 and the mounting plate 4, forming a continuous and closed sealing structure, which effectively prevents substances in the external environment (such as water vapor, dust, etc.) from entering the connector through the gap.

[0043] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0046] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A plastic connector, characterized in that, include: The device comprises a plug assembly (1), a socket assembly (2), and a fastener (3). The plug assembly (1) is pluggable into and detachable from the socket assembly (2) in a plugging / removing direction. The socket assembly (2) includes a socket housing (201) and socket terminals (202) disposed within the socket housing (201). The plug assembly (1) includes a plug housing (101) and a conductive bar (102). The plug housing (101) is pluggable into and detachable from the socket housing (201). The conductive bar (102) is at least partially disposed outside the plug. The plug housing (101) is internal and can be electrically connected to the socket terminal (202). The plug housing (101) has an opening for the fastener (3) to be inserted, so that the fastener (3) can pass through the conductive bar (102) and engage with the socket terminal (202) for locking. A first sealing ring (6) is provided between the fastener (3) and the inner wall of the plug housing (101). The fastener (3) is also provided with a flat spring washer (7) that can contact and seal with the surface of the conductive bar (102).

2. The plastic connector according to claim 1, characterized in that, The plug assembly (1) also includes a dust cover (103) that is sealed and installed at the opening.

3. The plastic connector according to claim 1, characterized in that, A concave cavity (203) is formed between the socket terminal (202) and the socket housing (201), and the concave cavity (203) is filled with sealant.

4. The plastic connector according to claim 1, characterized in that, The plug housing (101) is rotatable relative to the socket terminal (202).

5. The plastic connector according to claim 4, characterized in that, The inner wall of the plug housing (101) is provided with an elastic buckle (105), and the socket terminal (202) is provided with an annular groove (2021) that engages with the elastic buckle (105) so that the plug housing (101) is locked after rotating relative to the socket terminal (202).

6. The plastic connector according to any one of claims 1-5, characterized in that, The plug housing (101) has an extension portion (1011) extending vertically outward from its side. An installation channel is formed in the extension portion (1011), and the conductive bar (102) is inserted into the plug housing (101) along the installation channel.

7. The plastic connector according to claim 6, characterized in that, A plastic tail cap (104) is installed on the end of the extension (1011) opposite to the plug housing (101).

8. The plastic connector according to claim 6, characterized in that, A second sealing ring (8) is provided between the conductive bus (102) and the mounting channel.

9. The plastic connector according to any one of claims 1-5, characterized in that, A third sealing ring (9) is provided between the inner wall surface of the plug housing (101) and the outer wall surface of the socket housing (201).

10. The plastic connector according to any one of claims 1-5, characterized in that, The outer peripheral surface of the socket housing (201) is provided with a mounting boss (204), which can be mounted on the mounting plate (4) by screws (5), and a fourth sealing ring (10) is provided between the mounting boss (204) and the mounting plate (4).

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