Waterproof connector
By setting a first rib on the inner wall of the end cap's inner hole and interfering with the cable assembly, the problems of wire body sway and inconvenient assembly in traditional two-core high-voltage connectors are solved, and the stability and ease of operation of waterproof connectors are achieved.
Patent Information
- Application Number
- CN202423243254.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional two-core high-voltage connectors have problems such as the sealing body wobbling, which leads to waterproofing failure; the tail cap and plug housing shaking; inconvenient assembly; and the failure of the entire line due to the omission of the tail cap.
Several first ribs are provided on the inner wall of the inner hole of the tail cap to interfere with the cable assembly. The first ribs hold the cable assembly in place and ensure that it remains in the center position when bent. The inner ring column of the tail cap interferes with the sealing body to increase the mutual strength. The tail cap is designed as a side-snap-in structure for easy assembly and maintenance.
It effectively avoids waterproofing failure caused by the skewed compression of the sealing body, enhances the interlocking strength between the tail cap and the plug assembly, simplifies the assembly process, and reduces the risk of the entire line being scrapped.
Smart Images
Figure CN223665734U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to connector technical field especially relates to a waterproof connector. BACKGROUND
[0002] In recent years, new energy electric vehicles develop rapidly, and the connector industry competition is increasingly fierce, at the same time, electric vehicles basically require the IPX7 waterproof function of the connector for adapting to bad weather, and the cost reduction is also the main means to seize the market. However, the traditional two-core high-voltage connector has the following problems: (1) the gap cooperation of the plug shell and the tail cover of the traditional two-core high-voltage connector is designed to ensure that the cable can smoothly pass through the tail cover hole under the condition of the limit tolerance, at this time, the cable cannot be placed in the center position of the connector when the cable is bent, and will be deflected to the bending direction, the sealing line body and the cable cooperation will also be deflected and the compression amount of the plug shell inner hole is uneven, and the waterproof failure occurs on the side with too small compression amount; (2) the tail cover and the sealing line body of the traditional two-core high-voltage connector are gap cooperation in the axial direction, and the inner circle of the tail cover is a common convex column, and the tail cover and the plug shell have a certain amount of shaking, and when the bending radius of the cable is small, the buckling position is prone to be raised; (3) the tail cover of the traditional two-core high-voltage connector is basically designed in the through hole mode, and the tail cover needs to be inserted into the cable before assembling the copper sleeve and the terminal crimping, which is not convenient to operate, and the missing of the tail cover will lead to the whole line scrap.
[0003] Therefore, it is necessary to at least provide a waterproof connector to avoid the waterproof failure problem caused by the deflection of the sealing line body. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a waterproof connector to avoid the waterproof failure problem caused by the deflection of the sealing line body.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a waterproof connector, which comprises a plug assembly, a cable assembly, a sealing line body and a tail cover, the plug assembly is internally provided with a cable through hole, the cable assembly is arranged in the cable through hole, the sealing line body is arranged on the cable assembly and located in the cable through hole, and the sealing line body is used for sealing the gap between the cable assembly and the inner side wall of the cable through hole; the tail cover comprises a tail cover shell, a tail cover inner circle column body and a first convex rib, the tail cover inner circle column body is arranged in the tail cover shell, the tail cover inner hole is arranged in the tail cover inner circle column body, and a plurality of first convex ribs are arranged on the inner side wall of the tail cover inner hole along the circumferential direction of the tail cover inner hole; the tail cover shell is arranged on the tail end of the plug assembly, the tail cover inner circle column body is inserted into the cable through hole and arranged outside the cable assembly through the tail cover inner hole, and the first convex rib is in interference fit with the cable assembly.
[0006] Preferably, a limiting portion is protruded on the inner side wall of the cable through hole, and one end of the cable sealing body abuts against the limiting portion.
[0007] Preferably, the tail cover inner ring column is pressed on the other end of the cable sealing body.
[0008] Preferably, the tail cover further comprises a second protruding rib, which is arranged on the outer side wall of the tail cover inner ring column along the circumferential direction of the tail cover inner ring column, and abuts against the inner wall of the cable through hole.
[0009] Preferably, the tail cover is provided with an opening extending from the tail cover shell to the tail cover inner ring column and communicating with the tail cover inner hole, and the opening is used for buckling the cable assembly into the tail cover inner hole from the side of the tail cover.
[0010] Preferably, two cable through holes are arranged on the plug assembly, and two cable assemblies are arranged in the two cable through holes respectively, and two tail covers are arranged on the two cable assemblies through the openings and the tail cover inner holes respectively.
[0011] Preferably, the tail cover shell extends outwardly on one side of the opening to form an extension protruding column, the two tail covers are arranged adjacently, the extension protruding column of the tail cover is inserted into the opening of the adjacent tail cover, and the extension protruding columns of the two adjacent tail covers are buckled to each other.
[0012] Preferably, the tail cover shell is provided with a tail cover buckling portion, the plug assembly is provided with a plug buckling portion, and the tail cover buckling portion is connected with the plug buckling portion to lock the tail cover on the plug assembly.
[0013] Preferably, one of the tail cover buckling portion and the plug buckling portion is a buckling hole, and the other of the tail cover buckling portion and the plug buckling portion is a buckling boss.
[0014] Preferably, the outer side of the cable sealing body is provided with a plurality of waterproof ribs arranged along the axial direction of the cable sealing body.
[0015] Compared with the prior art, the waterproof connector of the utility model is provided with a plurality of first protruding ribs on the inner side wall of the tail cover inner hole of the tail cover, and the first protruding ribs are in interference fit with the cable assembly, so that the first protruding ribs hold the cable assembly, even if the cable assembly is bent near the tail cover, the cable assembly in the cable through hole can be kept in the central position of the cable through hole without deflection through the holding effect of the first protruding ribs on the cable assembly, so that the cable sealing body is prevented from being driven to one side to be compressed, and the problem of waterproof failure caused by the cable sealing body being driven to one side is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a perspective view of the waterproof connector of the utility model.
[0017] Figure 2 is Figure 1 is a side view of the waterproof connector shown in the figure.
[0018] Figure 3 is a sectional view along the direction of A-A in the figure. Figure 2
[0019] Figure 4 is an exploded view of the waterproof connector of the utility model.
[0020] Figure 5 is a perspective view of the tail cover of the waterproof connector of the utility model.
[0021] Figure 6 is a connection structure diagram of the cable assembly and the wire sealing body of the waterproof connector of the utility model. DETAILED DESCRIPTION
[0022] In order to explain the technical content and structural features of the utility model in detail, the following further description is made in combination with the embodiments and the accompanying drawings.
[0023] Please refer to Figures 1 to 5 The waterproof connector 100 of the utility model comprises a plug assembly 1, a cable assembly 2, a wire sealing body 3 and a tail cover 4, the plug assembly 1 is internally provided with a cable through hole 11, the cable assembly 2 is arranged in the cable through hole 11, the wire sealing body 3 is sleeved on the cable assembly 2 and located in the cable through hole 11, and the wire sealing body 3 is used for sealing the gap between the cable assembly 2 and the inner side wall of the cable through hole 11; the tail cover 4 comprises a tail cover outer shell 41, a tail cover inner ring column body 42 and a first protruding rib 43, the tail cover inner ring column body 42 is arranged in the tail cover outer shell 41, the tail cover inner hole 421 is arranged in the tail cover inner ring column body 42, a plurality of first protruding ribs 43 are arranged on the inner side wall of the tail cover inner hole 421 along the circumferential direction of the tail cover inner hole 421, the tail cover outer shell 41 is sleeved on the tail end of the plug assembly 1, the tail cover inner ring column body 42 is inserted into the cable through hole 11 and is sleeved on the outer side of the cable assembly 2 through the tail cover inner hole 421, and the first protruding rib 43 is in interference fit with the cable assembly 2. Specifically, the inner circle size formed by each first protruding rib 43 is smaller than the outer diameter size of the cable assembly 2, so that the interference fit effect is achieved.
[0024] The utility model holds the cable assembly 2 through the first protruding rib 43, even if the cable assembly 2 is bent near the position of the tail cover 4, the cable assembly 2 located in the cable through hole 11 can also be kept in the central position of the cable through hole 11 without deflection, so that the waterproof failure problem caused by the deflection of the wire sealing body 3 is solved.
[0025] Please refer to Figure 3 In an embodiment, a limiting portion 111 is protruded on the inner side wall of the cable through hole 11, and one end of the sealing wire body 3 abuts against the limiting portion 111. Further, the tail cover inner ring column body 42 is pressed against the other end of the sealing wire body 3, so that the tail cover inner ring column body 42 and the sealing wire body 3 are in interference fit in the axial direction, the interference amount can eliminate the gap value of the tail cover 4 and the plug assembly 1, effectively increase the mutual matching strength of the tail cover 4 and the plug assembly 1, and reduce the warping of the tail cover 4. The sealing wire body 3 can be made of existing soft silicone, but is not limited thereto.
[0026] Please refer to Figures 3 to 5 In an embodiment, the tail cover 4 further comprises a second protruding rib 44, which is arranged on the outer side wall of the tail cover inner ring column body 42 along the circumferential direction of the tail cover inner ring column body 42, and abuts against the inner wall of the cable through hole 11. By arranging the second protruding rib 44, the tail cover inner ring column body 42 of the tail cover 4 and the inner wall of the cable through hole 11 of the plug assembly 1 are matched more closely, effectively increasing the mutual matching strength of the tail cover 4 and the plug assembly 1, and effectively solving the problems of warping and insufficient strength of the tail cover 4.
[0027] Please refer to Figure 4 and Figure 5 In an embodiment, the tail cover 4 is provided with an opening 45 extending from the tail cover shell 41 to the tail cover inner ring column body 42 and communicating with the tail cover inner hole 421, and the opening 45 is used for buckling the cable assembly 2 into the tail cover inner hole 421 from the side of the tail cover 4. The cable assembly 2 can be buckled into the tail cover inner hole 421 through the opening 45 of the tail cover 4. When the waterproof connector 100 of the utility model is assembled, the tail cover 4 can be finally assembled, which is convenient to operate and simple to maintain in later period, can effectively reduce the cost, and solves the problems of inconvenient operation and whole line scrapping due to missing tail cover 4 in the prior art.
[0028] Please refer to Figure 1 , Figure 2 and Figure 5 In an embodiment, the plug assembly 1 is provided with two cable through holes 11, two cable assemblies 2 are respectively arranged in the two cable through holes 11, and two tail covers 4 are respectively arranged on the two cable assemblies 2 through the openings 45 and the tail cover inner holes 421. Further, the tail cover shell 41 extends outward on one side of the opening 45 to form an extension protruding column 411, the two tail covers 4 are arranged adjacently, the extension protruding column 411 of the tail cover 4 is inserted into the opening 45 of the adjacent tail cover 4, and the extension protruding columns 411 of the two adjacent tail covers 4 are buckled with each other. By arranging the extension protruding column 411 on the tail cover shell 41, the strength of the two tail covers 4 after assembly can be effectively increased.
[0029] Please refer to Figure 1 , Figure 4 and Figure 5In an embodiment, the tail cover 4 is provided with a tail cover fastening part 412, and the plug assembly 1 is provided with a plug fastening part 12, the tail cover fastening part 412 is connected with the plug fastening part 12 to lock the tail cover 4 on the plug assembly 1. Specifically, one of the tail cover fastening part 412 and the plug fastening part 12 is a fastening hole, and the other is a fastening boss. In this embodiment, the tail cover fastening part 412 is a fastening hole, and the plug fastening part 12 is a fastening boss, but it is not limited thereto.
[0030] Referring to Figure 6 In an embodiment, the cable assembly 2 includes a terminal 21, a copper sleeve 22 and a cable body 23, the terminal 21 is fixed on the end of the cable body 23, and the copper sleeve 22 is sleeved on the cable body 23 and fixedly connected with the cable body 23. Specifically, the terminal 21 and the copper sleeve 22 are made of copper alloy, the copper sleeve 22 is fixed with the cable body 23 by hexagonal crimping, and the terminal 21 is also fixed on the end of the cable body 23 by crimping, and the two tail covers 4 are respectively sleeved on the cable bodies 23 of the two cable assemblies 2 through the openings 45 and the tail cover inner holes 421.
[0031] Referring to Figure 3 and Figure 6 In an embodiment, the outer side of the sealing wire body 3 is provided with a plurality of waterproof ribs 31 arranged along the axial direction. By arranging a plurality of waterproof ribs 31 on the sealing wire body 3 and applying a certain compression amount to the sealing wire body 3, the sealing and waterproofing are realized.
[0032] Referring to Figure 1 and Figure 3 In an embodiment, the plug assembly 1 includes a plug shell, an interlocking needle, a TPA, a rubber core, a spring, a sealing ring and a CPA, but it is not limited thereto. The specific structure and principle of each component of the plug assembly 1 are well known to those skilled in the art, and thus will not be described here.
[0033] In combination with Figures 1 to 6 The specific principle of the waterproof connector 100 of the utility model is as follows:
[0034] Before the terminal 21 and copper sleeve 22 are crimped, the sealing body 3 is inserted into the cable body 23. The inner hole of the sealing body 3 is press-fitted with the cable body 23, forming initial compression. After the cable assembly 2 is inserted into the cable through hole 11 of the plug assembly 1, the sealing body 3 is pushed back into the cable through hole 11. At this time, the outer ring of the sealing body 3 is also press-fitted with the cable through hole 11. Two tail caps 4 are respectively fitted onto the cable bodies 23 of the two cable assemblies 2 through openings 45 and inner holes 421. The tail caps 4 are then pushed forward so that the tail cap fastening part 412 of the tail cap 4 is connected to the plug fastening part 12 of the plug assembly 1, thereby locking the tail caps 4 onto the plug assembly 1. At this time, the terminals 21 of the cable assembly 2 are fixed to the front end of the plug assembly 1. The first rib 43 of the tail cap 4 fixes and clamps the cable body 23 of the cable assembly 2, so that the center of the cable body 23, the sealing body 3 and the cable through hole 11 are aligned, effectively ensuring the uniformity of the circumferential compression of the sealing body 3. Even if the cable body 23 bends near the tail cap 4, the axial straightness of the cable body 23 inside the connector can be ensured by the interference fit of the first rib 43 of the tail cap 4. The sealing body 3 will not be compressed to one side, which has a good effect on ensuring the waterproofness of the connector and also ensures the waterproof performance of the connector after aging. When the tail cover 4 is fully engaged, the inner ring post 42 of the tail cover and the sealing body 3 have a certain interference fit. This interference can fill the gap between the tail cover engaging part 412 of the tail cover 4 and the plug engaging part 12 of the plug assembly 1, effectively reducing the amount of movement of the tail cover 4 in the axial direction, resulting in better strength, and also solving the common problem of tail cover 4 buckling and disengaging on the market.
[0035] In summary, the waterproof connector 100 of this utility model provides several first protruding ribs 43 on the inner wall of the inner hole 421 of the tail cover 4, and the first protruding ribs 43 are interference-fitted with the cable assembly 2, so that the first protruding ribs 43 hold the cable assembly 2. Even if the cable assembly 2 bends near the tail cover 4, the holding effect of the first protruding ribs 43 can keep the cable assembly 2 located in the cable through hole 11 at the center position of the cable through hole 11 without swaying, thereby preventing the sealing body 3 from being driven to one side and compressed, and effectively avoiding the waterproof failure problem caused by the sealing body 3 being pulled off course. Secondly, the waterproof connector 100 of this invention provides a second protruding rib 44 on the outer wall of the inner ring post 42 of the tail cover, and presses the inner ring post 42 of the tail cover onto the other end of the sealing body 3, so that the inner ring post 42 of the tail cover and the sealing body 3 have an interference fit in the axial direction, thereby effectively increasing the mating strength between the tail cover 4 and the plug assembly 1 and preventing the tail cover 4 from lifting. Furthermore, the waterproof connector 100 of this invention provides an opening 45 on the tail cover 4, allowing the tail cover 4 to be snapped into the cable from the side through the opening 45. When assembling the waterproof connector 100 of this invention, the tail cover 4 can be assembled last, which is convenient to operate and simple to maintain, effectively reducing costs.
[0036] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.
Claims
1. A waterproof connector, characterized in that, include: A plug assembly (1) is provided, wherein the plug assembly (1) has a cable through hole (11). Cable assembly (2), the cable assembly (2) being inserted into the cable through hole (11), Sealing body (3), the sealing body (3) is sleeved on the cable assembly (2) and located inside the cable through hole (11), the sealing body (3) is used to seal the gap between the cable assembly (2) and the inner wall of the cable through hole (11); Tail cap (4), the tail cap (4) includes a tail cap outer shell (41), a tail cap inner ring column (42) and a first rib (43). The tail cap inner ring column (42) is disposed inside the tail cap outer shell (41). The tail cap inner ring column (42) is provided with a tail cap inner hole (421). A plurality of first ribs (43) are disposed on the inner sidewall of the tail cap inner hole (421) along the circumferential direction of the tail cap inner hole (421). The tail cap outer shell (41) is sleeved on the tail end of the plug assembly (1). The tail cap inner ring column (42) is inserted into the cable through hole (11) and sleeved on the outside of the cable assembly (2) through the tail cap inner hole (421). The first rib (43) is interference-fitted with the cable assembly (2).
2. The waterproof connector according to claim 1, characterized in that, A limiting part (111) is protruding on the inner wall of the cable through hole (11), and one end of the sealing body (3) abuts against the limiting part (111).
3. The waterproof connector according to claim 2, characterized in that, The inner ring column (42) of the tail cap is pressed against the other end of the sealing body (3).
4. The waterproof connector according to claim 1, characterized in that, The tail cap (4) also includes a second rib (44), which is disposed on the outer side wall of the inner ring column (42) of the tail cap along the circumferential direction, and the second rib (44) abuts against the inner wall of the cable through hole (11).
5. The waterproof connector according to claim 1, characterized in that, The tail cap (4) has an opening (45) extending from the tail cap outer shell (41) toward the tail cap inner ring column (42) and communicating with the tail cap inner hole (421). The opening (45) is used for the cable assembly (2) to be snapped into the tail cap inner hole (421) from the side of the tail cap (4).
6. The waterproof connector according to claim 5, characterized in that, The plug assembly (1) is provided with two cable through holes (11), and the two cable assemblies (2) are respectively inserted into the two cable through holes (11). The two tail caps (4) are respectively fitted onto the two cable assemblies (2) through the opening (45) and the inner hole (421) of the tail cap.
7. The waterproof connector according to claim 6, characterized in that, The tail cap housing (41) extends outward on one side of the opening (45) to form an extension protrusion (411). The two tail caps (4) are arranged adjacent to each other. The extension protrusion (411) of the tail cap (4) is inserted into the opening (45) of the adjacent tail cap (4), and the extension protrusions (411) of the two adjacent tail caps (4) are interlocked.
8. The waterproof connector according to claim 1, characterized in that, The tail cover housing (41) is provided with a tail cover fastening part (412), and the plug assembly (1) is provided with a plug fastening part (12). The tail cover fastening part (412) is connected to the plug fastening part (12) to lock the tail cover (4) onto the plug assembly (1).
9. The waterproof connector according to claim 8, characterized in that, One of the tail cap fastening part (412) and the plug fastening part (12) is a fastening hole, and the other of the tail cap fastening part (412) and the plug fastening part (12) is a fastening boss.
10. The waterproof connector according to claim 1, characterized in that, The outer side of the sealing body (3) is provided with several rings of waterproof reinforcing strips (31) arranged along its axial direction.