High-voltage waterproof power connector

Abstract

The utility model discloses a high pressure waterproof type power connector relates to power connector technical field, including male head, female head and wire, and male head is equipped with fixed ring and sealing washer, female head circumference installs the groove, and the groove inlay installs the mounting strip, and the mounting strip outer end is connected V type spring piece, and V type spring piece outer end is connected with the clamping strip, and the clamping strip end part is equipped with the slope face clamping head, and the female head butt joint after the clamping head clamps the fixed ring, the clamping strip is equipped with the unlocking ring, and the unlocking ring inner circumference evenly distributes the support block and is slidably attached with female head outer wall, and the clamping strip is equipped with the limiting block and the protection block, the utility model discloses through evenly distributing V type spring piece and clamping strip and realizes even pressure, and the waterproof property of double sealing is promoted, and the slope face clamping head and unlocking ring simplify the assembly and disassembly, and the support block guarantees the sliding stability of unlocking ring, and the auxiliary handle promotes the convenience of operation. Effectively solve the low efficiency of the existing thread connection, the defect that clamping connection is sealed, adapt to new energy automobile, industrial high pressure equipment and other scenes, and the connection stability and environmental adaptability are stronger.

Description

Technical Field

[0001] This utility model relates to the field of power connector technology, and in particular to a high-voltage waterproof power connector. Background Technology

[0002] High-voltage power connectors are electrical connection devices used to transmit high-voltage electrical energy with a rated voltage of not less than 300VAC (or 420VDC). Their core function is to connect and disconnect circuits under high-voltage conditions, while ensuring the stability, safety, and environmental adaptability of the connection. They are key components in fields such as new energy, industrial control, and outdoor power systems. With the rapid development of these fields, the application scenarios of high-voltage power connectors are becoming increasingly complex. In addition to meeting core electrical performance requirements such as high-voltage insulation and current carrying capacity, waterproof performance has become an important indicator to ensure their long-term reliable operation. If waterproofing fails, moisture will enter the connector, leading to decreased insulation performance and corrosion of metal contacts. In severe cases, it can cause safety hazards such as short circuits and electric arcs, directly affecting the stability of the entire power system.

[0003] Currently, the waterproof design of high-voltage power connectors in the industry generally relies on a single sealing gasket (such as a rubber gasket) between the male and female connector mating surfaces. The connection structure presses the male and female connectors together, causing the sealing gasket to elastically deform and fill the mating gap, thus achieving a waterproof seal. However, while this single sealing gasket is effective, the actual effectiveness of this type of waterproof solution is greatly affected by the rationality of the connection structure. Existing connection structures mainly suffer from the following two problems:

[0004] Firstly, there are threaded connectors. Threaded connections require manual tightening of the male and female ends to achieve a tight seal, but their waterproof reliability depends entirely on the operator's adherence to operating procedures. If the threads are not tightened to the preset torque during operation, the mating pressure between the male and female ends will be insufficient, the sealing gasket will not deform sufficiently, and tiny gaps will remain between the mating surfaces. Moisture can easily penetrate through these gaps, significantly reducing the waterproof effect. At the same time, threaded connections have low assembly efficiency, and under harsh conditions such as vibration and impact, the threads may loosen, further increasing the risk of waterproof failure.

[0005] Secondly, connectors using snap-fit ​​connections. To improve assembly efficiency, some connectors employ a single snap-fit ​​head or a double snap-fit ​​head structure with opposing heads, achieving quick mating between the male and female heads through the snap-fit ​​action of the heads and slots. However, the stress point of this type of snap-fit ​​structure is concentrated at the head, resulting in uneven distribution of the compression force on the sealing gasket: the compression force is greater in the area corresponding to the head, while the compression force in areas far from the head is significantly insufficient. The sealing gasket cannot form an effective seal in these areas, easily creating "sealing blind spots." Moisture can penetrate into the connector's interior through these insufficiently compressed areas, making it difficult to achieve the desired waterproof effect. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a high-pressure waterproof power connector that can improve the uniformity of the extrusion pressure between the male and female connectors, thereby improving the sealing effect between the male and female connectors.

[0007] This utility model discloses a high-voltage waterproof power connector, including a male connector and a female connector, both of which are provided with wires. The male connector has a retaining ring, and a sealing washer is provided on the annular surface of the retaining ring facing the female connector. It also includes:

[0008] A plurality of mounting strips are provided, and a plurality of mounting grooves are evenly distributed on the circumferential sidewall of the female head near the end of the male head. The plurality of mounting strips are respectively embedded in the plurality of mounting grooves.

[0009] A plurality of V-shaped springs, the number of which is adapted to the number of mounting strips, wherein the inner ends of the plurality of V-shaped springs are respectively connected to the outer ends of the plurality of mounting strips;

[0010] Several locking strips, the number of which is adapted to the number of V-shaped springs, the inner middle part of the several locking strips is connected to the outer end of the several V-shaped springs respectively, and each of the several locking strips is provided with a locking head on the end facing the male head. After the male head and the female head are fully connected, the locking heads of the several locking strips are locked on the side wall of the fixing ring facing away from the female head.

[0011] Several of the aforementioned card strips are provided with unlocking components;

[0012] An auxiliary sealing component is provided on the end face of the male connector facing the female connector.

[0013] Furthermore, the auxiliary sealing assembly includes a soft sealing ring, which is coaxially fixedly installed on the annular surface of the male head facing the female head, and the inner sidewall of the insertion groove of the female head is provided with an annular groove that is adapted to the soft sealing ring.

[0014] Furthermore, the unlocking component includes an unlocking ring, and the ends of the several card strips away from the card head are all set to be curved outwards. The unlocking ring is slidably sleeved on the several card strips. The middle of the outer side wall of each card strip slides closely against the inner circumferential side wall of the unlocking ring without squeezing. A limit block is provided on the middle of the outer end of the several card strips near the card head. The limit block is used to prevent the unlocking ring from slipping off the several card strips.

[0015] Furthermore, the faces of the card heads of several of the card strips are all set as slopes, and the slopes radiate outward from the female head to the male head.

[0016] Furthermore, both annular sidewalls of the annular groove are connected and provided with arc-shaped grooves.

[0017] Furthermore, a protective block is provided on the outer end of several of the card strips on the side away from the card head.

[0018] Furthermore, two auxiliary handles are provided on the circumferential sidewall of the female connector near its conductor, and the two auxiliary handles are arranged opposite each other.

[0019] Furthermore, the outer ring sidewall of the unlocking ring is configured with a rounded corner structure.

[0020] Furthermore, the inner circumferential sidewall of the unlocking ring is provided with a plurality of support blocks, the inner ends of which are slidably and tightly attached to the outer circumferential sidewall of the female head.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. Uniformly distributed clamping force, eliminating sealing blind spots: The mounting strips, V-shaped springs and retaining strips evenly distributed around the circumference of the female head ensure that the axial clamping force of the retaining ring is evenly transmitted along the circumference, ensuring that the sealing gasket undergoes sufficient elastic deformation, completely solving the problem of "concentrated force and insufficient clamping force far from the clamping point" in traditional clamping connections, and avoiding sealing failure.

[0023] 2. Double sealing for enhanced waterproof performance: The fixed ring sealing gasket and the soft sealing ring + annular groove form double protection. Combined with the arc-shaped groove to buffer the deformation of the seal, it greatly improves the water vapor barrier capability and meets the stringent waterproof requirements of high-pressure outdoor scenarios.

[0024] 3. Efficient and convenient assembly, reducing operational dependence: The guide design of the clamping head's bevel surface allows the male and female heads to automatically open and tighten the clamping strip when they are connected, eliminating the need for thread tightening. This not only improves assembly efficiency but also avoids sealing hazards caused by improper manual operation, thus lowering the skill threshold.

[0025] 4. Stable and labor-saving unlocking structure, easy maintenance: The sliding unlocking ring, together with the arc-shaped end of the locking strip, can simultaneously drive all locking strips to open, realizing rapid separation of the male and female heads; the evenly distributed support blocks ensure that the unlocking ring slides smoothly without tilting, making the unlocking operation smoother.

[0026] 5. The structure is adaptable to complex working conditions and has strong stability: The elastic deformation of the V-shaped spring can compensate for docking errors and continuously provide stable clamping force under vibration and impact conditions to prevent loosening of the connection; the design of protective blocks, rounded corners, auxiliary handles and other features improves durability and operational safety.

[0027] 6. Precise unlocking ring guidance ensures synchronized action: The evenly distributed support blocks on the inner circumference of the unlocking ring slide against the outer wall of the female head, providing axial sliding guidance for the unlocking ring, avoiding skewness or jamming of the unlocking ring, ensuring that all locking strips open and close synchronously, and improving structural reliability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the installation structure of the soft sealing ring of this utility model;

[0030] Figure 3 This is the right view of this utility model;

[0031] Figure 4 This is the utility model Figure 3 A cross-sectional view of the AA section;

[0032] Figure 5 This is the utility model Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0033] Figure 6 This is the utility model Figure 4 A magnified schematic diagram of the partial structure of B in the diagram;

[0034] The following are labels in the attached diagram: 1. Male connector; 2. Female connector; 3. Wire; 4. Retaining ring; 5. Sealing gasket; 6. Mounting strip; 7. V-shaped spring; 8. Locking strip; 9. Locking head; 10. Soft sealing ring; 11. Annular groove; 12. Unlocking ring; 13. Limiting block; 14. Sloping surface; 15. Arc-shaped groove; 16. Protective block; 17. Auxiliary handle; 18. Rounded corner structure; 19. Support block. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0036] like Figures 1 to 6 As shown, this utility model discloses a high-voltage waterproof power connector, including a male connector 1 and a female connector 2. Both the male connector 1 and the female connector 2 are provided with wires 3. The male connector 1 is provided with a retaining ring 4, and a sealing washer 5 is provided on the annular surface of the retaining ring 4 facing the female connector 2. The connector also includes:

[0037] A plurality of mounting strips 6 are provided, and a plurality of mounting grooves are evenly distributed on the circumferential sidewall of the female head 2 near the male head 1. The plurality of mounting strips 6 are respectively embedded in the plurality of mounting grooves.

[0038] A plurality of V-shaped spring pieces 7, the number of which is adapted to the number of mounting strips 6, and the inner ends of the plurality of V-shaped spring pieces 7 are respectively connected to the outer ends of the plurality of mounting strips 6;

[0039] A number of locking strips 8 are provided, the number of which is adapted to the number of V-shaped spring pieces 7. The inner middle part of the locking strips 8 is connected to the outer end of the V-shaped spring pieces 7 respectively. Each of the locking strips 8 is provided with a locking head 9 on the end facing the male head 1. After the male head 1 and the female head 2 are fully connected, the locking heads 9 of the locking strips 8 are all locked on the side wall of the fixing ring 4 facing away from the female head 2.

[0040] Several of the card strips 8 are provided with unlocking components;

[0041] An auxiliary sealing component is provided on the end face of the male head 1 facing the female head 2;

[0042] In this embodiment,

[0043] Mounting strip 6: Embedded in the mounting groove of the female head 2, it provides a stable mounting reference for the V-shaped spring 7 and ensures the structural rigidity of the connection between the spring and the female head 2.

[0044] V-shaped spring 7: connects the mounting strip 6 and the retaining strip 8, and uses elastic deformation to provide continuous and uniform axial clamping force, while compensating for minor misalignment errors of the male and female heads 2.

[0045] Card strip 8: Supports the card head 9 and distributes the force evenly, transferring the elastic force of the V-shaped spring 7 to the card head 9, avoiding localized force concentration.

[0046] Clamp 9: After docking, clamp the retaining ring 4 to achieve axial limiting of the male and female heads 2, prevent separation, and ensure connection reliability.

[0047] Unlocking component: Provides a convenient unlocking function, allowing the male and female heads 2 to be quickly separated for easy maintenance and replacement.

[0048] Auxiliary sealing component: forms a double seal with sealing gasket 5, fills the gap of a single seal, and improves the waterproof rating.

[0049] As a preferred embodiment of the above, the auxiliary sealing assembly includes a soft sealing ring 10, which is coaxially fixedly installed on the annular surface of the male head 1 facing the female head 2, and the inner sidewall of the insertion groove of the female head 2 is provided with an annular groove 11 that is adapted to the soft sealing ring 10.

[0050] In this embodiment,

[0051] Soft sealing ring 10: Made of soft elastic material, it is embedded in the annular groove 11 after extrusion and fills the gap through large deformation to form a circumferential sealing barrier. The soft sealing ring 10 can be selected as a silicone rubber gasket or a nitrile rubber gasket, but is not limited to the above two types.

[0052] Annular groove 11: Adapts to the shape of soft sealing ring 10, limits the deformation range, and makes the sealing ring fit tightly with the groove wall, enhancing the circumferential sealing effect.

[0053] As a preferred embodiment of the above embodiment, the unlocking component includes an unlocking ring 12, and the ends of the plurality of card strips 8 away from the card head 9 are all set to be curved outwards. The unlocking ring 12 is slidably sleeved on the plurality of card strips 8. The middle part of the outer side wall of each card strip 8 is slidably close to but not squeezed with the inner circumferential side wall of the unlocking ring 12. A limiting block 13 is provided on the side of the middle part of the outer end of the plurality of card strips 8 near the card head 9. The limiting block 13 is used to prevent the unlocking ring 12 from slipping off the plurality of card strips 8.

[0054] In this embodiment,

[0055] Unlocking ring 12: Slides on the outside of the sleeve 8. When sliding axially, it drives all the sleeves 8 to open synchronously, thus achieving overall unlocking.

[0056] The arc-shaped end of the locking strip 8 bends outward to provide a smooth guide for the sliding of the unlocking ring 12 and reduce sliding resistance.

[0057] Limiting block 13: Limits the maximum sliding stroke of unlocking ring 12, preventing unlocking ring 12 from slipping off the outer end of card strip 8, and ensuring component stability.

[0058] As a preferred embodiment of the above embodiment, the opposing surfaces of the card heads 9 of the plurality of card strips 8 are all provided as slopes 14, and the plurality of slopes 14 radiate outward from the female head 2 to the male head 1.

[0059] In this embodiment,

[0060] The 9-slope 14 of the clamp head is inclined outward in a radial shape. When docking, it contacts the edge of the fixing ring 4 to generate a guiding force, which automatically opens the clamp strip 8 without manual bending, thus improving the ease of assembly.

[0061] As a preferred embodiment of the above embodiment, both annular sidewalls of the annular groove 11 are provided with arc-shaped grooves 15;

[0062] In this embodiment,

[0063] Arc-shaped groove 15: It is formed on both sides of the annular groove 11 to provide a buffer space for the deformation of the soft sealing ring 10, avoids excessive compression leading to permanent deformation, and increases the contact area. Moreover, the arc-shaped groove 15 and the soft sealing ring 10 are squeezed to form a labyrinth sealing structure, which improves the sealing reliability.

[0064] As a preferred embodiment of the above embodiment, a protective block 16 is provided on the side of the outer end of each of the card strips 8 away from the card head 9;

[0065] In this embodiment,

[0066] Protective block 16: Located on the outer end of the card strip 8 away from the card head 9, it prevents the unlocking ring 12 from sliding excessively, thus improving the reliability of use.

[0067] As a preferred embodiment of the above embodiment, two auxiliary handles 17 are provided on the circumferential sidewall of the female connector 2 near its wire 3, and the two auxiliary handles 17 are arranged opposite to each other.

[0068] In this embodiment,

[0069] Auxiliary handle 17: It is set on the side wall of the female head 2 to facilitate the operator's grip, avoid hand slippage during docking and disengagement, and improve the safety and convenience of operation.

[0070] As a preferred embodiment of the above, the outer ring sidewall of the unlocking ring 12 is provided with a rounded corner structure 18;

[0071] In this embodiment,

[0072] Unlocking ring 12 with rounded corners and structure 18: The outer circumference edges are rounded to prevent hand injuries during operation, improving the feel and safety of use.

[0073] As a preferred embodiment of the above, the inner circumferential sidewall of the unlocking ring 12 is provided with a plurality of support blocks 19, and the inner ends of the plurality of support blocks 19 are all slidably and tightly attached to the outer circumferential sidewall of the female head 2.

[0074] In this embodiment,

[0075] Support block 19: evenly distributed on the inner circumference of the unlocking ring 12, with its inner end slidingly attached to the outer wall of the female head 2, providing axial sliding guidance for the unlocking ring 12, preventing the unlocking ring 12 from tilting or getting stuck, ensuring that all locking strips 8 move synchronously, and improving unlocking stability.

[0076] The working principle of this utility model is as follows:

[0077] When the male and female connectors 2 are connected, the operator holds the auxiliary handle 17 and inserts the male connector 1 into the female connector 2. The slope 14 of the locking head 9 contacts the edge of the fixing ring 4 and generates a guiding force, causing the locking strips 8 to open outward and the V-shaped spring 7 to deform elastically. When the male and female connectors 2 are fully connected (conductive contacts are in contact), the V-shaped spring 7 elastically recovers, driving the locking strips 8 to contract, and the locking head 9 clamps the fixing ring 4 to achieve axial fixation. At this time, the evenly distributed locking strips 8 transmit uniform clamping force, causing the sealing gasket 5 to fully deform and fill the gap between the mating surfaces. At the same time, the soft sealing ring 10 is embedded in the annular groove 11 and buffers the deformation in the arc-shaped groove 15, forming a double seal. When unlocking, the unlocking ring 12 is pushed axially. The unlocking ring 12 slides smoothly under the guidance of the support block 19, driving all the locking strips 8 to open outward synchronously. The locking head 9 is released from the limit of the fixing ring 4, and the male and female connectors 2 can be easily separated. The whole process solves the waterproof problem through uniform clamping and double sealing, and improves the efficiency of assembly and disassembly with the help of the guiding structure and unlocking components, adapting to the use requirements of high-pressure and complex working conditions.

[0078] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-voltage waterproof power connector, comprising a male connector (1) and a female connector (2), wherein both the male connector (1) and the female connector (2) are provided with wires (3), and the male connector (1) is provided with a retaining ring (4), wherein a sealing washer (5) is provided on the annular surface of the retaining ring (4) facing the female connector (2), characterized in that, Also includes: A plurality of mounting strips (6) are provided, and a plurality of mounting grooves are evenly distributed on the circumferential sidewall of the female head (2) near the male head (1), and the plurality of mounting strips (6) are respectively embedded in the plurality of mounting grooves; A plurality of V-shaped springs (7), the number of which is adapted to the number of mounting strips (6), and the inner ends of the plurality of V-shaped springs (7) are respectively connected to the outer ends of the plurality of mounting strips (6); A number of locking strips (8) are provided, the number of which is adapted to the number of V-shaped springs (7). The inner middle part of the locking strips (8) is connected to the outer end of the V-shaped springs (7). Each of the locking strips (8) is provided with a locking head (9) at the end facing the male head (1). After the male head (1) and the female head (2) are fully connected, the locking heads (9) of the locking strips (8) are all locked on the side wall of the fixing ring (4) facing away from the female head (2). Several of the card strips (8) are provided with unlocking components; An auxiliary sealing component is provided on the end face of the male head (1) facing the female head (2).

2. The high-voltage waterproof power connector as described in claim 1, characterized in that, The auxiliary sealing assembly includes a soft sealing ring (10), which is coaxially fixedly installed on the annular surface of the male head (1) facing the female head (2). The inner sidewall of the insertion groove of the female head (2) is provided with an annular groove (11) that is adapted to the soft sealing ring (10).

3. A high-voltage waterproof power connector as described in claim 1, characterized in that, The unlocking assembly includes an unlocking ring (12). The ends of the several card strips (8) away from the card head (9) are all set to be curved outwards. The unlocking ring (12) is slidably sleeved on the several card strips (8). The middle part of the outer side wall of each card strip (8) is slidably close to the inner circumferential side wall of the unlocking ring (12) but not squeezed. The middle part of the outer end of the several card strips (8) is provided with a limiting block (13) on the side near the card head (9). The limiting block (13) is used to prevent the unlocking ring (12) from slipping off the several card strips (8).

4. A high-voltage waterproof power connector as described in claim 3, characterized in that, The faces of the card heads (9) of several of the card strips (8) are all set as slopes (14), and the slopes (14) radiate outward from the female head (2) to the male head (1).

5. A high-voltage waterproof power connector as described in claim 2, characterized in that, Both annular sidewalls of the annular groove (11) are connected by arc-shaped grooves (15).

6. A high-voltage waterproof power connector as described in claim 3, characterized in that, A protective block (16) is provided on the side of the outer end of several of the card strips (8) away from the card head (9).

7. A high-voltage waterproof power connector as described in claim 1, characterized in that, Two auxiliary handles (17) are provided on the circumferential sidewall of the female head (2) near its conductor (3), and the two auxiliary handles (17) are arranged opposite to each other.

8. A high-voltage waterproof power connector as described in claim 3, characterized in that, The outer ring sidewall of the unlocking ring (12) is provided with a rounded corner structure (18).

9. A high-voltage waterproof power connector as described in claim 4, characterized in that, The inner circumferential sidewall of the unlocking ring (12) is provided with a number of support blocks (19), and the inner ends of the support blocks (19) are all slidably attached to the outer circumferential sidewall of the female head (2).

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