A waterproof connector with multiple sealing structure

Abstract

The utility model discloses a waterproof connector with multiple sealing structure, this waterproof connector with multiple sealing structure includes first casing, the second casing of setting on it, waterproof cover, first casing with second casing passes through detachable type connection, be equipped with front sealing ring between first casing and second casing, the tail end of first casing is equipped with rear sealing pad, waterproof cover is fixed with first casing through detachable type and will rear sealing pad press tightly in the inner end surface of first casing. Through front sealing ring and rear sealing pad constitute double sealing structure, effectively prevent water vapor penetration, sealing convex part promotes the degree of adhesion and sealing pressure, waterproof cover press tightly rear sealing pad, and enhance radial sealing, and the limiting piece restricts the wire swing, reduces mechanical interference, and improves waterproof reliability, through the design of the above -mentioned makes the product adapt to complex vibration, temperature difference and pollution environment, satisfies the high stability requirement of car, prolongs the life, and guarantees the safe operation of electrical system.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a waterproof connector with a multi-seal structure. Background Technology

[0002] Connectors are components that connect active devices and transmit current or signals. They are widely used in production and daily life. Their structure usually includes a plastic connector body and metal pins. The pins cooperate with the body through the socket, with both ends extending to the outside and the middle fixed to the connector body.

[0003] Existing automotive connectors rely on waterproof caps installed at one end of the metal pin terminals for waterproofing. However, these caps are prone to reduced sealing performance due to material aging, mechanical wear, or temperature changes during long-term use, allowing moisture to seep into the metal pins and causing short circuits. Furthermore, the waterproof caps are not reliable enough in complex vibration, temperature difference, and pollution environments, making it difficult to meet the high stability requirements of automotive applications. Therefore, the applicant has developed a useful design and found a solution to the above problems. The technical solution described below was developed in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of traditional connector designs and provide a product that improves waterproof performance, extends service life, and enhances electrical connection stability.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A waterproof connector with a multi-seal structure includes a first housing, a second housing fitted thereon, and a waterproof cover. The first housing and the second housing are detachably connected. A front sealing ring is provided between the first housing and the second housing. A rear sealing gasket is provided at the tail end of the first housing. The waterproof cover is detachably connected and fixed to the first housing, and the rear sealing gasket is pressed tightly against the inner end face of the first housing. The outer walls of the front sealing ring and the rear sealing gasket are provided with at least one sealing protrusion, which fits against the inner wall of the first housing or the second housing. The waterproof cover is provided with a limiting member for the wire to pass through, which is used to limit the swing of the wire. The first housing is provided with a backstop member, which abuts against the second housing, to enhance the pushing force of the pin.

[0007] Preferably, the first housing is provided with at least one pin, the end of the pin is provided with a spring connected to the wire, and the outer wall of the spring is provided with an abutment portion.

[0008] Preferably, the first housing has a chamber for accommodating the spring and the pin, the chamber has a partition for separating adjacent springs, and a limiting part is provided on one side of the partition and the side wall of the chamber, which contacts the abutment part.

[0009] Preferably, the anti-reverse member has an outwardly expanding elastic portion and is engaged within the partition portion. The anti-reverse member has guide portions at its top and bottom, protruding from the surface of the first housing. Anti-reverse portions are provided on both sides of the anti-reverse member, and a distance is formed between the anti-reverse portions and the limiting portion to restrict the contact portion.

[0010] Preferably, the rear sealing gasket has a wire hole for the wire to pass through, the inner wall of the wire hole has a plurality of flanges, and the first housing has a cavity for accommodating the rear sealing gasket.

[0011] Preferably, the outer side of the first housing and the waterproof cover is provided with an ear clip, and the outer side of the second housing and the first housing is provided with a locking part that cooperates with the ear clip. The ear clip is pressed onto the locking part and abuts against it. The detachable type is provided as an ear clip.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] (1) This utility model forms a double sealing structure with a front sealing ring and a rear sealing gasket, which effectively prevents water vapor from penetrating between the first and second housings and the wire inlet; the sealing protrusion improves the fit and sealing pressure with the inner wall of the housing; the waterproof cover presses the rear sealing gasket tightly against the inner end face of the first housing, enhancing the radial sealing effect; the limiting component restricts the swing of the wire, reduces the mechanical interference of the wire to the sealing structure, further improves the waterproof reliability, improves the reliability of this product in complex vibration, temperature difference and pollution environments, meets the high stability requirements of automotive applications, significantly extends the service life of the connector, and ensures the safe operation of the electrical system.

[0015] (2) In this utility model, when the anti-reverse component abuts against the second housing, it restricts the forward and backward displacement of the pin during the insertion and removal process, enhances the fixation stability of the pin and the socket, suppresses the forward and backward movement caused by vehicle bumps, and improves the stability of electrical connection; at the same time, the structure reduces the mechanical wear between the pin and the socket and extends the overall service life of the connector. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the two-pronged structure of a waterproof connector with a multi-seal structure according to the present invention.

[0017] Figure 2 This is a schematic diagram of the two-pronged side cross-sectional structure of a waterproof connector with a multi-seal structure according to this utility model. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the two-pronged side cross-sectional structure of a waterproof connector with a multi-seal structure according to this utility model. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the internal structure of a two-pronged waterproof connector with a multi-sealing structure according to the present invention.

[0020] Figure 5 This is an exploded view of a waterproof connector with a multi-seal structure according to the present invention.

[0021] Figure 6 This is a schematic diagram of the three-pronged structure of a waterproof connector with multiple sealing structures according to the present invention.

[0022] The correspondence between the labels and component names in the attached figures is as follows:

[0023] Reference numerals: 1. First housing; 2. Second housing; 3. Waterproof cover; 4. Front sealing ring; 5. Rear sealing gasket; 6. Sealing protrusion; 7. Anti-reverse component; 8. Insert pin; 9. Ear clip; 10. Locking part; 11. Chamber; 12. Divider; 13. Limiting part; 14. Recess; 31. Limiting component; 51. Wire hole; 52. Flange; 71. Elastic part; 72. Guide part; 73. Anti-reverse component; 81. Insert spring; 82. Contact part. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0026] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0027] Reference example Figures 1 to 5A waterproof connector with a multi-seal structure includes a first housing 1, a second housing 2 sleeved thereon, and a waterproof cover 3. The first housing 1 and the second housing 2 are detachably connected. A front sealing ring 4 is provided between the first housing 1 and the second housing 2. A rear sealing gasket 5 is provided at the tail end of the first housing 1. The waterproof cover 3 is detachably connected and fixed to the first housing 1, and the rear sealing gasket 5 is pressed tightly against the inner end face of the first housing 1. The outer walls of the front sealing ring 4 and the rear sealing gasket 5 are provided with at least one sealing protrusion 6, which fits against the inner wall of the first housing 1 or the second housing 2. The waterproof cover 3 is provided with a limiting member 31 for the wire to pass through, which is used to limit the swing of the wire. The first housing 1 is provided with a backstop 7, which abuts against the second housing 2, which is used to enhance the pushing force of the pin 8.

[0028] The front sealing ring 4 and the rear sealing gasket 5 form a double sealing structure, effectively preventing moisture from seeping between the first housing 1 and the second housing 2 and from the wire inlet; the sealing protrusion 6 improves the fit and sealing pressure with the inner wall of the housing; the waterproof cover 3 presses the rear sealing gasket 5 tightly against the inner end face of the first housing 1, enhancing the radial sealing effect; the limiting member 31 restricts the swing of the wire, reduces the mechanical interference of the wire to the sealing structure, further improves the waterproof reliability, enhances the reliability of this product in complex vibration, temperature difference and pollution environments, meets the high stability requirements of automotive applications, significantly extends the service life of the connector, and ensures the safe operation of the electrical system;

[0029] It is worth mentioning that the first housing 1 is provided with at least one pin 8, the end of the pin 8 is provided with a spring 81 connected to the wire, the outer wall of the spring 81 is provided with an abutment portion 82, and the spring 81 is pressed to form a stable electrical connection with the wire.

[0030] It is worth mentioning that the first housing 1 is provided with a chamber 11 for accommodating the spring 81 and the pin 8. The chamber 11 is provided with a partition 12 for separating adjacent springs 81. A limiting part 13 is provided on one side of the partition 12 and the side wall of the chamber 11, and it contacts the contact part 82. The partition 12 achieves physical isolation between adjacent springs 81 to avoid the risk of short circuit. The limiting part 13 cooperates with the contact part 82 to form an axial positioning structure, which restricts the displacement of the spring 81 and improves the positioning accuracy and impact resistance of the pin 8.

[0031] It is worth mentioning that the anti-reverse member 7 is provided with an outwardly expanding elastic part 71 and is locked in the partition part 12. The upper and lower parts of the anti-reverse member 7 are provided with guide parts 72 and protrude from the surface of the first housing 1. The anti-reverse member 7 is provided with anti-reverse parts 73 on both sides. The anti-reverse parts 73 and the limiting part 13 form a distance that limits the contact part 82. After the anti-reverse member 7 abuts against the second housing 2, it limits the front and back displacement of the pin 8 during the insertion and removal process, enhances the fixing stability of the pin 8 and the socket, suppresses the front and back movement caused by vehicle bumps, and improves the stability of the electrical connection. This structure also reduces the mechanical wear between the pin 8 and the socket, extends the overall service life of the connector, the elastic part 71 provides adaptive clamping force, enhances the installation stability of the anti-reverse member 7, the guide part 72 facilitates assembly and alignment, and the anti-reverse part 73 and the limiting part 13 work together to form a mechanical limiting structure, effectively suppressing the axial movement of the spring 81 and improving the vibration resistance and long-term stability of the electrical connection.

[0032] It is worth mentioning that the rear sealing gasket 5 is provided with a wire hole 51 for the wire to pass through. The inner wall of the wire hole 51 is provided with multiple flanges 52. The first housing 1 is provided with a cavity 14 to accommodate the rear sealing gasket 5. The multiple flanges 52 tightly abut against the insulation layer of the wire, enhancing the radial clamping force on the wire, making the wire tightly connected to the wire hole 51, and improving the waterproof performance at the wire entrance. The waterproof cover 3 and the cavity 14 form a clamping force to hold the rear sealing gasket 5, ensuring the sealing structure is stable.

[0033] It is worth mentioning that the outer sides of the first housing 1 and the waterproof cover 3 are provided with ear clips 9, and the outer sides of the second housing 2 and the first housing 1 are provided with locking parts 10 that cooperate with the ear clips 9. The ear clips 9 are pressed onto the locking parts 10 and abut against each other. The ear clips 9 are detachable. The ear clips 9 and the locking parts 10 form a quick-assembly and disassembly structure, improving assembly efficiency and ease of operation. The above content is a further detailed description of the present utility model in conjunction with specific embodiments. It should not be considered that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all of these should be considered to fall within the protection scope defined by the claims submitted by the present utility model.

Claims

1. A waterproof connector with a multi-seal structure, comprising a first housing (1), a second housing (2) sleeved thereon, and a waterproof cover (3), wherein the first housing (1) and the second housing (2) are detachably connected, characterized in that: A front sealing ring (4) is provided between the first housing (1) and the second housing (2). A rear sealing gasket (5) is provided at the tail end of the first housing (1). The waterproof cover (3) is detachably connected and fixed to the first housing (1) and the rear sealing gasket (5) is pressed tightly against the inner end face of the first housing (1). The outer walls of the front sealing ring (4) and the rear sealing gasket (5) are provided with at least one sealing protrusion (6) and are attached to the inner wall of the first housing (1) or the second housing (2). The waterproof cover (3) is provided with a limiting member (31) for the wire to pass through, which is used to limit the swing of the wire. The first housing (1) is provided with a backstop member (7) and abuts against the second housing (2), which is used to enhance the pushing force of the pin (8).

2. The waterproof connector with a multi-seal structure according to claim 1, characterized in that: The first housing (1) is provided with at least one pin (8), the end of the pin (8) is provided with a spring (81) connected to the wire, and the outer wall of the spring (81) is provided with an abutment portion (82).

3. The waterproof connector with a multi-seal structure according to claim 2, characterized in that: The first housing (1) is provided with a chamber (11) for accommodating the spring (81) and the pin (8). The chamber (11) is provided with a partition (12) that divides adjacent springs (81). A limiting part (13) is provided on one side of the partition (12) and the side wall of the chamber (11), and it contacts the contacting part (82).

4. The waterproof connector with a multi-seal structure according to claim 3, characterized in that: The anti-reverse member (7) is provided with an outwardly expanding elastic portion (71) and is locked in the partition portion (12). The anti-reverse member (7) is provided with guide portions (72) at the top and bottom and protrudes from the surface of the first housing (1). The anti-reverse member (7) is provided with anti-reverse portions (73) on both sides. The anti-reverse portions (73) and the limiting portion (13) form a distance that restricts the contact portion (82).

5. The waterproof connector with a multi-seal structure according to claim 1, characterized in that: The rear sealing gasket (5) is provided with a wire hole (51) for the wire to pass through, and the inner wall of the wire hole (51) is provided with a plurality of flanges (52). The first housing (1) is provided with a cavity (14) for accommodating the rear sealing gasket (5).

6. The waterproof connector with a multi-seal structure according to claim 1, characterized in that: The outer side of the first housing (1) and the waterproof cover (3) is provided with ear buckles (9), and the outer side of the second housing (2) and the first housing (1) is provided with locking parts (10) that cooperate with the ear buckles (9). The ear buckles (9) are pressed on the locking parts (10) and abut against each other. The detachable type is the ear buckles (9).

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