High sealing large current split slot terminal

Abstract

The utility model belongs to the technical field of electrical connection element, disclose a kind of high sealing large current slotting terminal, including slotting front end, intermediate connecting end and tail end, the slotting front end, intermediate connecting end and tail end are sequentially head-to-tail integrally formed connection, the surface of intermediate connecting end is equipped with sealing ring, radial extension rib position boss is provided on intermediate connecting end, and rib position boss can extend radially inward or outward;The inside of intermediate connecting end is provided with sealing plug, and the sealing plug is cylindrical blind hole structure, and the sealing plug mouth portion is located in the inside of intermediate connecting end, and the mouth portion periphery is conical.The scheme is cooperated by outer sealing ring and inner sealing plug, and constitutes the double sealing system of radial and axial, effectively insulates the invasion of external water vapor, dust, and the exudation of internal medium, and the sealing performance is far more than single sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection element technology, and more specifically, to a high-sealing, high-current slotted terminal. Background Technology

[0002] Terminals are crucial components for power and signal transmission in the circuits of new energy vehicles. The sealing structure of the terminals is a key design element for achieving waterproofing, working in conjunction with sealing components to meet the overall waterproofing requirements. Poor sealing allows moisture, dust, and other contaminants to penetrate the terminal or connector cavity, leading to corrosion of conductive parts, decreased insulation resistance, and potentially causing overheating, signal interruption, or even short circuits, seriously threatening the safety and reliability of the electrical system.

[0003] Existing slotted terminals typically use a single O-ring for radial sealing, but this structure has the following drawbacks: First, a single O-ring is prone to creep or displacement under long-term use or vibration, leading to seal failure; second, relying solely on external sealing cannot effectively prevent media from intruding along the gap between the wire and the terminal inside the terminal. Therefore, a slotted terminal with high sealing performance, flexible structure, and reliability is needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-sealing, high-current slotted terminal.

[0005] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0006] A high-sealing, high-current slotted terminal includes a slotted front end, an intermediate connecting end, and a tail end. The slotted front end, intermediate connecting end, and tail end are integrally formed and connected end to end in sequence. A sealing ring is sleeved on the surface of the intermediate connecting end. A rib protrusion extending radially is provided on the intermediate connecting end. The rib protrusion can extend radially inward or outward.

[0007] When the rib protrusion extends radially inward, the rib protrusion forms a concave rib on the surface of the intermediate connecting end, and the sealing ring is located in the rib groove formed by the concave rib at the intermediate connecting end.

[0008] When the rib protrusion extends radially outward, the rib protrusion forms a rib stop on the surface of the intermediate connecting end, and the sealing ring is located to the left of the rib stop and closely attached to the rib stop.

[0009] The intermediate connecting end is provided with a sealing plug inside. The sealing plug has a cylindrical blind hole structure. The opening of the sealing plug is located inside the intermediate connecting end and the outer periphery of the opening is conical, which serves as a guide. The outer periphery of the tail of the sealing plug is provided with several serrated first protrusions that are evenly distributed to enhance the sealing effect. The inner wall of the intermediate connecting end is provided with a first groove that matches the first protrusions.

[0010] As a further description of the above technical solution: the number of the convex rib stops is one or two.

[0011] When there is only one rib, a sealing groove is formed on the surface of the intermediate connecting end corresponding to the sealing ring, and the sealing ring is located in the sealing groove.

[0012] When there are two raised ribs, the sealing ring is located between the two raised ribs.

[0013] As a further description of the above technical solution: a drain hole is provided on the intermediate connecting end and on the left side of the sealing ring for draining any liquid that may enter.

[0014] As a further description of the above technical solution: a flat locking point is provided on the middle connecting end and on the right side of the rib boss.

[0015] As a further description of the above technical solution: the sealing ring is an O-ring or an O-ring flat structure, and the flat structure has several serrated protrusions evenly distributed inside and outside to enhance the sealing effect.

[0016] As a further description of the above technical solution: a concave V-shaped annular groove is provided on the inner wall of the intermediate connecting end, and the V-shaped annular groove is located between the conical structure of the sealing plug and the first protrusion.

[0017] As a further description of the above technical solution: the cross-sectional shape of the rib boss is rectangular, trapezoidal or arc-shaped.

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] I. This solution, through the synergistic effect of the external sealing ring and the internal sealing plug, forms a dual sealing system in both the radial and axial directions, effectively isolating the intrusion of external moisture and dust, as well as the leakage of internal media, and its sealing performance far exceeds that of a single sealing structure.

[0020] Second, the intermediate connection end of this solution can be customized according to the specific needs of the customer. By selecting the extension direction and quantity of the rib protrusions, and combining them with structures such as sealing grooves, drainage holes, and flat locking points, the product can be modularly designed to meet the specific requirements of different application scenarios.

[0021] Third, the serrated protrusion at the tail of the sealing plug in this design, in conjunction with the first groove, forms multiple sealing lips with a large contact area and uniform sealing pressure distribution; the V-shaped annular groove, as a pre-acting auxiliary sealing barrier, further enhances the redundancy and reliability of the sealing system; the flat serrated structure of the sealing ring itself also enhances the sealing effect.

[0022] IV. The tapered structure of the sealing plug in this design facilitates assembly guidance; the flat locking point ensures the correct axial positioning and circumferential anti-rotation of the terminal within the connector; the ribbed boss (convex rib or concave rib) provides a precise installation position for the sealing ring, preventing it from shifting during use.

[0023] Fifth, the design of the drainage holes in this solution can promptly drain any small amounts of liquid that may intrude, preventing liquid accumulation from affecting sealing performance and electrical safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Internal structure diagram;

[0026] Figure 3 This is a schematic diagram of a rib boss extending radially outward according to the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the two radially outwardly extending rib bosses of this utility model;

[0028] Figure 5 This is a schematic diagram of the rib boss extending radially inward according to the present invention.

[0029] Explanation of the labels in the diagram:

[0030] 1. Front end of the slot; 2. Middle connecting end; 3. Tail end; 4. Sealing ring;

[0031] 5. Rib protrusion; 50. Recessed rib; 501. Rib groove; 51. Raised rib stop;

[0032] 6. Sealing plug; 61. First protrusion; 62. First groove; 63. V-shaped annular groove;

[0033] 7. Sealing groove; 8. Drainage hole; 9. Flat locking point. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0035] Example 1

[0036] Please see Figure 1 A high-sealing, high-current slotted terminal includes a slotted front end 1, an intermediate connecting end 2, and a tail end 3, which are sequentially integrally formed and connected end to end.

[0037] External sealing structure: such as Figure 1 , 3 As shown, a sealing ring 4 is fitted on the surface of the intermediate connecting end 2, and a rib protrusion 5 extending radially outward is provided on the intermediate connecting end 2. The rib protrusion 5 forms a rib stop 51 on the surface of the intermediate connecting end 2. The sealing ring 4 is located to the left of the rib stop 51 and is in close contact with the rib stop 51. The rib stop 51 acts as a physical stop on the right side of the sealing ring 4.

[0038] Furthermore, a sealing groove 7 is formed on the surface of the intermediate connecting end 2 corresponding to the sealing ring 4, and the sealing ring 4 is located in the sealing groove 7, thus achieving the peripheral sealing requirement of the terminal. The sealing ring 4 is an O-type or a flat O-type structure, and the flat structure has several equally spaced serrated protrusions on its inner and outer sides. The flat serrated structure of the sealing ring 4 itself also enhances the sealing effect.

[0039] Internal sealing structure: such as Figure 2 As shown, a sealing plug 6 is provided inside the intermediate connecting end 2. The sealing plug 6 has a cylindrical blind hole structure. The opening of the sealing plug 6 is located inside the intermediate connecting end 2 and its outer periphery is conical, serving a guiding function. Several serrated first protrusions 61 are provided on the outer periphery of the tail of the sealing plug 6. The inner wall of the intermediate connecting end 2 is provided with first grooves 62 that are adapted to the first protrusions 61. Through the cooperation of the serrated first protrusions 61 and the first grooves 62, multiple tight sealing layers are formed.

[0040] Furthermore, a concave V-shaped annular groove 63 is formed on the inner wall of the intermediate connecting end 2. The V-shaped annular groove 63 is located between the conical structure of the sealing plug 6 and the first protrusion 61. The V-shaped annular groove 63 forms a localized, high-stress linear contact band, complementing the main sealing structure and constructing a redundant auxiliary sealing line. Through the "maze effect," it greatly increases the leakage resistance of the medium, improves the reliability of the entire internal sealing system, and ensures that even if there are slight defects in the main sealing layer, it can effectively prevent the intrusion of the medium (especially water vapor).

[0041] Auxiliary structures: such as Figure 1 As shown, a drain hole 8 is provided on the middle connecting end 2, located to the left of the sealing ring 4. The drain hole 8 is designed to promptly drain any small amount of liquid that may have entered. A flat locking point 9 is provided on the middle connecting end 2, located to the right of the rib boss 5. This flat point serves as a locking point during product assembly for axial positioning. At the same time, its flat structure can engage with the corresponding mating structure inside the connector housing, effectively preventing the terminal from rotating circumferentially during service and meeting the anti-rotation function requirements.

[0042] Example 2

[0043] This embodiment strengthens the fixing method of the sealing ring 4 based on embodiment 1.

[0044] like Figure 4 As shown, the difference from Embodiment 1 is that two radially outwardly extending ribs 51 are provided on the intermediate connecting end 2. The sealing ring 4 is directly fitted onto the surface of the intermediate connecting end 2 and located between the two ribs 51. The two ribs 51 work together to clamp the sealing ring 4 from both sides, forming a more robust sealing ring 4 clamping structure, which can more effectively prevent the sealing ring 4 from shifting during installation or vibration.

[0045] Example 3

[0046] This embodiment provides an alternative solution for extending the rib boss inward.

[0047] like Figure 5 As shown, the difference from Embodiment 1 or 2 is that the rib protrusion 5 provided on the intermediate connecting end 2 extends radially inward, thereby forming a concave rib 50 on the surface of the intermediate connecting end 2. The sealing ring 4 is located within the rib groove 501 naturally formed by this concave rib 50 on the surface of the intermediate connecting end 2. This concave rib 50 structure also provides a stable and precise installation position for the sealing ring 4, acting as an effective stop to achieve peripheral sealing.

[0048] Furthermore, based on the above embodiments, the cross-sectional shape of the rib boss is rectangular, trapezoidal, or arc-shaped to adapt to different sealing requirements.

[0049] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A high-sealing, high-current slotted terminal, comprising a slotted front end (1), a middle connecting end (2), and a tail end (3), wherein the slotted front end (1), the middle connecting end (2), and the tail end (3) are integrally formed and connected end-to-end in sequence, characterized in that: A sealing ring (4) is fitted on the surface of the intermediate connecting end (2), and a rib protrusion (5) extending radially is provided on the intermediate connecting end (2). The rib protrusion (5) can extend radially inward or outward. When the rib protrusion (5) extends radially inward, the rib protrusion (5) forms a concave rib (50) on the surface of the intermediate connecting end (2), and the sealing ring (4) is located in the rib groove (501) formed by the concave rib (50) at the intermediate connecting end (2). When the rib protrusion (5) extends radially outward, the rib protrusion (5) forms a rib stop (51) on the surface of the intermediate connecting end (2), and the sealing ring (4) is located to the left of the rib stop (51) and closely attached to the rib stop (51). The intermediate connecting end (2) is provided with a sealing plug (6). The sealing plug (6) is a cylindrical blind hole structure. The opening of the sealing plug (6) is located inside the intermediate connecting end (2) and the outer periphery of the opening is conical. The outer periphery of the tail of the sealing plug (6) is provided with several serrated first protrusions (61) evenly distributed. The inner wall of the intermediate connecting end (2) is provided with a first groove (62) that matches the first protrusions (61).

2. The high-sealing, high-current slotted terminal according to claim 1, characterized in that: The number of the convex ribs (51) is one or two.

3. A high-sealing, high-current slotted terminal according to claim 2, characterized in that: When the number of the rib stops (51) is one, the surface of the intermediate connecting end (2) is provided with a sealing groove (7) corresponding to the sealing ring (4), and the sealing ring (4) is located in the sealing groove (7).

4. A high-sealing, high-current slotted terminal according to claim 2, characterized in that: When there are two ribs (51), the sealing ring (4) is located between the two ribs (51).

5. A high-sealing, high-current slotted terminal according to claim 1, characterized in that: A drain hole (8) is provided on the middle connecting end (2) and on the left side of the sealing ring (4).

6. A high-sealing, high-current slotted terminal according to claim 1, characterized in that: A flat locking point (9) is provided on the middle connecting end (2) and on the right side of the rib protrusion (5).

7. A high-sealing, high-current slotted terminal according to claim 1, characterized in that: The sealing ring (4) is an O-type or a flat O-type structure, and the flat structure has several equally spaced serrated protrusions on its inner and outer sides.

8. A high-sealing, high-current slotted terminal according to claim 1, characterized in that: The inner wall of the intermediate connecting end (2) is provided with a concave V-shaped annular groove (63), which is located between the conical structure of the sealing plug (6) and the first protrusion (61).

9. A high-sealing, high-current slotted terminal according to claim 1, characterized in that: The cross-sectional shape of the rib protrusion (5) is rectangular, trapezoidal or arc-shaped.

Images