A terminal connector sealing structure

Abstract

This utility model belongs to the field of electrical connector technology and discloses a terminal connector sealing structure, including a terminal tube body and a sealing ring sleeved on its surface. The terminal tube body includes a front section and a rear section. Near the front section in the axial direction of the terminal tube body, a radially extending rib boss is formed by cold extrusion. The rib boss can extend radially outward or inward. This solution uses cold extrusion to directly integrally form the rib boss, reducing material waste and avoiding the high cost of traditional machining. It can meet the effective conductive cross-sectional area without increasing the outer diameter of the bar. Upsetting ribs or grooves or combinations can adapt to different sealing requirements, breaking through the limitations of traditional processing technology and making new project development and cost reduction and efficiency improvement more flexible. In addition, the integral forming process reduces subsequent deburring, polishing and other processes, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and more specifically, to a terminal connector sealing structure. Background Technology

[0002] Terminals are crucial components for power and signal transmission in the circuitry of new energy vehicles. The sealing structure of the terminals is a key design element for achieving their waterproof function, working in conjunction with sealing components to meet the overall waterproof rating requirements.

[0003] Traditional sealing structures for terminal connectors involve radially cutting grooves of a certain depth and width on the outer surface of the rod (e.g., ...). Figure 1 As shown, the groove is used to accommodate sealing components (such as O-rings, sealing rings, etc.). When the connector is mated, the sealing components are compressed to fill the groove space.

[0004] However, to simultaneously meet certain groove depth and effective current-carrying area requirements for the terminals, the outer diameter of the rod needs to be increased, ultimately leading to increased material, processing, and electroplating costs. The cutting process is prone to generating burrs, affecting sealing reliability. Furthermore, the limited production process significantly restricts the design and development of new product solutions and cost reduction / efficiency improvement efforts.

[0005] Therefore, the development of a terminal sealing structure with good sealing effect, low production cost, high efficiency and diverse structure has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealing structure for terminal connectors.

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A terminal connector sealing structure includes a terminal tube body and a sealing ring sleeved on its surface; the terminal tube body includes a front section and a rear section, and a radially extending rib boss is formed near the front section in the axial direction of the terminal tube body by a cold extrusion process, the rib boss can extend radially outward or inward.

[0009] When the rib protrusion extends radially outward, it forms a rib retaining wall on the surface of the terminal tube, and the sealing ring is fitted on the surface of the terminal tube and located on one side of the rib retaining wall.

[0010] When the rib protrusion extends radially outward, it forms a upset groove on the surface of the terminal tube, and the sealing ring is embedded in the annular groove.

[0011] As a further description of the above technical solution: an annular groove is provided on the terminal tube body and on one side of the upset rib retaining wall, and the sealing ring is fitted on the terminal tube body and located in the annular groove.

[0012] As a further description of the above technical solution: the cross-sectional shape of the upset bar retaining wall, upset groove or annular groove is rectangular, trapezoidal or arc-shaped.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] This solution utilizes cold extrusion to directly form the rib bosses in one piece, reducing material waste and avoiding the high costs of traditional machining. It achieves the desired effective conductive cross-sectional area without increasing the outer diameter of the bar. Upsetting ribs, retaining walls, or upsetting grooves, or combinations thereof, can adapt to different sealing requirements, overcoming the limitations of traditional processing techniques and making new project development and cost reduction more flexible. Furthermore, the one-piece molding process reduces subsequent deburring and polishing processes, improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the existing technology;

[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the terminal tube body in Embodiment 1 of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0019] Figure 5 This is a cross-sectional view of the terminal tube body in Embodiment 2 of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0021] Figure 7 This is a cross-sectional view of the terminal tube body of Embodiment 3 of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Terminal tube body; 11. Front section; 12. Rear section; 2. Sealing ring; 3. Rib boss; 30. Upsetting rib retaining wall; 31. Upsetting groove; 4. Annular groove. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Please see Figure 2-3 A terminal connector sealing structure includes a terminal tube body 1, with a sealing ring 2 fitted onto the surface of the terminal tube body 1. The terminal tube body 1 includes a front section 11 and a rear section 12. Near the front section 11 in the axial direction, a radially extending rib boss 3 is formed by cold extrusion. The width and height of the rib boss 3 are adjustable. As the rib boss 3 extends radially outward, it forms a upset rib retaining wall 30 on the surface of the terminal tube body 1. The sealing ring 2 is fitted onto the surface of the terminal tube body 1 and tightly adheres to one side of the upset rib retaining wall 30.

[0027] In this embodiment, a locally formed boss through cold extrusion replaces the integral cutting of deep grooves. This eliminates the need to increase the outer diameter of the bar to meet the groove depth, directly reducing raw material usage and simultaneously saving material costs, machining losses, and subsequent electroplating area costs. Furthermore, the radial extension structure of the rib boss 3 allows for greater wall thickness retention for the same outer diameter, ensuring that the effective current-carrying cross-sectional area is not reduced and avoiding the weakening of the conductive cross-section caused by traditional deep groove cutting. The upset rib retaining wall 30, formed by cold extrusion, has a sharp edge transition, resulting in a smooth contact surface with the sealing ring 2 without cutting burrs. This allows for a more uniform radial stress distribution when the sealing ring 2 is compressed for sealing.

[0028] Example 2

[0029] Please see Figure 4-5 This embodiment is a further improvement on Embodiment 1. Compared with Embodiment 1, an annular groove 4 is formed on the terminal tube 1 on one side of the upset rib retaining wall 30, and the sealing ring 2 is embedded in the annular groove 4. The annular groove 4 works in conjunction with the cold-extruded rib boss 3 to form a double-safety sealing structure of "retaining wall + groove". The annular groove 4 provides embedding space for the sealing ring 2, and with the physical obstruction of the upset rib retaining wall 30, axial movement of the sealing ring 2 under insertion or vibration conditions can be prevented.

[0030] Example 3

[0031] Please see Figure 6-7A terminal connector sealing structure includes a terminal tube body 1, with a sealing ring 2 fitted on the surface of the terminal tube body 1. The terminal tube body 1 includes a front section 11 and a rear section 12. Near the front section 11 in the axial direction, a radially extending rib boss 3 is formed by cold extrusion. The width and height of the rib boss 3 are adjustable. The inwardly extending rib boss 3 forms a upset groove 31 on the surface of the terminal tube body 1. The sealing ring 2 is fitted on the terminal tube body 1 and located in the upset groove 31.

[0032] In this embodiment, the sealing groove can be formed without increasing the outer diameter through inward extrusion molding, reducing material usage. The cold extrusion process, performed in a single step, reduces cutting volume and improves material utilization compared to traditional turning, while also reducing tool wear and machining time. Since the outer diameter does not need to be increased, the electroplating surface area is correspondingly reduced, lowering electroplating costs. Traditional external grooves reduce the effective conductive wall thickness, while the upset groove 31 in this solution does not affect the outer diameter, ensuring that the pipe wall thickness and current-carrying capacity remain unaffected. Furthermore, after the sealing ring 2 is embedded in the upset groove 31, it is constrained both axially and radially, preventing displacement during insertion or vibration, resulting in a more reliable seal.

[0033] Based on the above embodiments, the cross-sectional shape of the upset rib retaining wall 30, the upset groove 31, or the annular groove 4 is rectangular, trapezoidal, or arc-shaped to adapt to different sealing requirements. Furthermore, the upset rib retaining wall 30 and the upset groove 31 are not limited to being used alone.

[0034] 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 terminal connector sealing structure comprising a terminal tube (1) and a sealing ring (2) sleeved on the surface of the terminal tube (1); the terminal tube (1) comprises a front section (11) and a rear section (12), characterized in that: The terminal tube body (1) has a radially extending rib boss (3) formed by cold extrusion near the front section (11) in the axial direction. The rib boss (3) can extend radially outward or inward. When the rib protrusion (3) extends radially outward, a rib retaining wall (30) is formed on the surface of the terminal tube (1), and the sealing ring (2) is fitted on the surface of the terminal tube (1) and closely attached to one side of the rib retaining wall (30); When the rib protrusion (3) extends radially outward, a upset groove (31) is formed on the surface of the terminal tube (1), and the sealing ring (2) is fitted on the terminal tube (1) and located in the upset groove (31).

2. The terminal connector sealing structure according to claim 1, characterized in that: An annular groove (4) is provided on the terminal tube (1) and on one side of the upsetting retaining wall (30), and the sealing ring (2) is embedded in the annular groove (4).

3. The terminal connector sealing structure according to claim 2, characterized in that: The cross-sectional shape of the upset bar retaining wall (30), upset groove (31) or annular groove (4) is rectangular, trapezoidal or arc-shaped.

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