A joint structure for a power cable of an underwater actuator
Patent Information
- Application Number
- CN202522484240.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-24
AI Technical Summary
[0003]当执行器内管伸展时，将导致执行器内部的体积增加，在执行器内部形成负压，在长期负压作用下，外接线缆和执行器之间的密封结构容易失效，造成执行器进水失效，严重缩短执行器的使用寿命
1、水下执行器供电线缆的接头结构包括接头壳体、护套。所述接头壳体呈L形结构，呈L形结构接头壳体的竖直段形成与线缆壳体连接的连接段、水平段形成与水下执行器插接的插接段，也即，接头壳体的两端分别与线缆壳体、水下执行器连接，进而使线缆与水下执行器连接。所述插接段中设置有沿长度方向贯穿的空腔，该空腔中设置有水平延伸的第一隔板，将空腔分隔为上下两个腔室，该空腔的后部设置有竖直延伸的第二隔板，与第一隔板具有间隔距离，该第二隔板上设置有三个孔，分别供两根导电线及一根通气管穿过，也即，线缆中设置的两根导电线（正极线、负极线）分别经第二隔板上对应的两个孔定位后，穿过对应的腔室，用于对水下执行器提供电力，线缆中设置的通气管经第二隔板上对应的孔定位后，与插接段的空腔连通。所述插接段的前端面设置有环绕空腔的连接器安装环台，用于装配mini-fit连接器，当装配有mini-fit连接器的接头结构插入水下执行器的电源端时，通气管经接头壳体插接段的空腔与水下执行器的内部空间连通，可通过通气管平衡水下执行器内部空间的气压，避免因负压造成密封失效进水，保证水下执行器的使用寿命。所述连接段的后侧设置有切缺，且该切缺与空腔连通，如此可暴露第二隔板上的三个孔，方便装配供电线缆中的两根导电线及通气管。所述护套套设在接头壳体上，对切缺、连接器安装环台、空腔形成包覆，加工方便，并能保证密封性，护套与连接器安装环台之间具有环形间隙，在保证mini-fit连接器正常装配的基础上，还提高了mini-fit连接器与接头结构的密封性，降低进水风险。
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Figure CN224909058U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable harnesses, and in particular to a connector structure for a power supply cable for an underwater actuator. Background Technology
[0002] The company's IP68 waterproof-rated electric linear actuators require complete immersion underwater throughout their entire service life to maintain reliable operation. These actuators are powered and transmit signals via external cables.
[0003] When the inner tube of the actuator extends, it will cause the internal volume of the actuator to increase, creating a negative pressure inside the actuator. Under long-term negative pressure, the sealing structure between the external cable and the actuator is prone to failure, causing water to enter the actuator and causing it to fail, which will seriously shorten the service life of the actuator.
[0004] To address the aforementioned issues, the applicant designed a power supply cable capable of balancing the air pressure of an underwater actuator. This cable includes conductive wires and a vent pipe. Correspondingly, a matching connector structure needs to be designed to meet the requirements for power supply and air pressure balancing of the underwater actuator. Summary of the Invention
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a connector structure for the power supply cable of an underwater actuator. This structure is simple, has low processing costs, and can meet the power supply cable's requirements for power supply and air pressure balance for the underwater actuator.
[0006] The technical solution of this utility model is: a connector structure for a power supply cable of an underwater actuator, including a connector housing and a sheath. The connector housing has an L-shaped structure. The vertical section of the L-shaped connector housing forms a connecting section that connects to the cable housing, and the horizontal section forms a plug-in section that plugs into the underwater actuator. The plug-in section has a cavity extending along its length. A horizontally extending first partition is provided in the cavity, dividing the cavity into upper and lower chambers. A vertically extending second partition is provided at the rear of the cavity, spaced apart from the first partition. The second partition has three holes for two conductive wires and a vent pipe to pass through, respectively. A connector mounting ring is provided on the front end face of the plug-in section, surrounding the cavity. A notch is provided on the rear side of the connecting section, and the notch communicates with the cavity. The sheath is fitted on the connector housing, covering the notch, the connector mounting ring, and the cavity, and there is an annular gap between the sheath and the connector mounting ring.
[0007] The connector housing connection section is provided with an external thread section, and the top and bottom surfaces of the connector housing insertion section are provided with several spaced ribs.
[0008] A limiting flange is provided on the horizontal section of the sheath, and a positioning groove extending along the length direction is provided on the top surface of the horizontal section of the sheath. A sealing ring is fitted on the horizontal section of the sheath and is located between the limiting flange and the positioning groove.
[0009] The horizontal section of the sheath has arc-shaped grooves on the rear side walls of both sides to form a clamping part.
[0010] The holes on the second partition for the two conductive wires to pass through correspond to the two chambers of the cavity, and the holes on the second partition for the vent pipe to pass through correspond to the first partition.
[0011] The above technical solution has the following beneficial effects: 1. The connector structure of the underwater actuator power supply cable includes a connector housing and a sheath. The connector housing has an L-shaped structure. The vertical section of the L-shaped connector housing forms a connection section that connects to the cable housing, and the horizontal section forms a plug-in section that plugs into the underwater actuator. That is, both ends of the connector housing are connected to the cable housing and the underwater actuator, respectively, thereby connecting the cable to the underwater actuator. The plug-in section has a cavity extending along its length. A horizontally extending first partition is provided in the cavity, dividing the cavity into upper and lower chambers. A vertically extending second partition is provided at the rear of the cavity, spaced apart from the first partition. The second partition has three holes for two conductive wires and a vent pipe to pass through. That is, the two conductive wires (positive wire and negative wire) in the cable are positioned through the corresponding two holes on the second partition and then pass through the corresponding chambers to provide power to the underwater actuator. The vent pipe in the cable is positioned through the corresponding hole on the second partition and communicates with the cavity of the plug-in section. The front end of the plug section is provided with a connector mounting ring surrounding the cavity for assembling the mini-fit connector. When the connector structure equipped with the mini-fit connector is inserted into the power supply terminal of the underwater actuator, the vent pipe communicates with the internal space of the underwater actuator through the cavity of the plug section of the connector housing. This allows the air pressure inside the underwater actuator to be balanced through the vent pipe, preventing water ingress due to negative pressure and ensuring the service life of the underwater actuator. A notch is provided on the rear side of the connecting section, and this notch communicates with the cavity, thus exposing three holes on the second partition plate for easy assembly of the two conductive wires in the power supply cable and the vent pipe. The sheath is fitted onto the connector housing, covering the notch, the connector mounting ring, and the cavity. This facilitates processing and ensures a tight seal. An annular gap exists between the sheath and the connector mounting ring, which, while ensuring proper assembly of the mini-fit connector, also improves the seal between the mini-fit connector and the connector structure, reducing the risk of water ingress.
[0012] 2. The connector housing connection section is provided with an external thread section. The top and bottom surfaces of the connector housing insertion section are provided with several spaced ribs to ensure the connection stability between the structural housing and the sheath and to prevent slippage between the sheath and the connector housing.
[0013] 3. A limiting flange is provided on the horizontal section of the sheath, and a positioning groove extending along the length direction is provided on the top surface of the horizontal section of the sheath. A sealing ring is fitted on the horizontal section of the sheath, located between the limiting flange and the positioning groove. The insertion section of the connector structure is positioned by the positioning groove and the limiting flange to ensure the stability of the connection and the stability of the sealing ring.
[0014] 4. The rear of both sides of the horizontal section of the sheath is provided with arc-shaped grooves to form a clamping part, which facilitates the insertion of the connector structure into the underwater actuator.
[0015] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a perspective view of the connector housing of this utility model; Figure 3 This is a rear view of the connector housing of this utility model; Figure 4 This is a front view of the connector housing of this utility model.
[0017] In the attached diagram, 1 is the connector housing, 2 is the sheath, 3 is the connecting section, 4 is the plug section, 5 is the first partition, 6 is the second partition, 7 is the hole, 8 is the connector mounting ring, 9 is the notch, 10 is the limiting flange, 11 is the positioning groove, 12 is the sealing ring, and 13 is the clamping part. Detailed Implementation
[0018] See Figures 1 to 4This is a specific embodiment of a connector structure for an underwater actuator power supply cable. The connector structure for the underwater actuator power supply cable includes a connector housing 1 and a sheath 2. The connector housing 1 has an L-shaped structure. The vertical section of the L-shaped connector housing forms a connecting section 3 that connects to the cable housing, and the horizontal section forms a plug-in section 4 that plugs into the underwater actuator. In this embodiment, the cross-section of the connecting section is circular, and the cross-section of the plug-in section is rectangular. The connecting section 3 of the connector housing is provided with an external thread section. The top and bottom surfaces of the plug-in section 4 of the connector housing are provided with several spaced-apart ribs, which extend along the width direction of the plug-in section. The plug-in section 4 has a cavity that extends through the length direction. Obviously, the cross-section of the cavity is also rectangular. A horizontally extending first partition 5 is provided in the cavity, dividing the cavity into upper and lower chambers. Specifically, the first partition is located in the middle of the cavity, making the two chambers have the same structure. The cavity has a vertically extending second partition 6 at its rear, spaced apart from the first partition 5. The second partition 6 has three holes 7 for two conductive wires and a vent pipe to pass through. In this embodiment, these three holes are evenly distributed circumferentially. The holes for the two conductive wires correspond to the two chambers of the cavity, and the holes for the vent pipe correspond to the first partition. The front end of the insertion section 4 has a connector mounting ring 8 surrounding the cavity. The rear side of the connecting section 3 has a notch 9 communicating with the cavity. The sheath 2 is fitted onto the connector housing 1, covering the notch 9, the connector mounting ring 8, and the cavity. An annular gap exists between the sheath 2 and the connector mounting ring 8. To ensure connection stability, a limiting flange 10 is provided on the horizontal section of the sheath. A positioning groove 11 extending along the length direction is provided on the top surface of the horizontal section of the sheath. A sealing ring 12 is fitted onto the horizontal section of the sheath, located between the limiting flange 10 and the positioning groove 11. To facilitate the assembly of the connector structure to the underwater actuator, arc-shaped grooves are provided on the rear side walls of both horizontal sections of the sheath to form a clamping part 13.
[0019] After the connector housing connecting section of this utility model is connected (plugged in) to the cable housing, the two conductive wires in the cable housing are first passed through the corresponding holes on the second partition and the corresponding chambers in the plugging section, with the extended ends exposed in the connector mounting ring. Then, the mini-fit connector is connected to the conductive wires and assembled on the front end face of the connector housing plugging section through the connector mounting ring. Next, the vent pipe in the cable housing is passed through the corresponding hole on the second partition and communicates with the cavity. Subsequently, a sheath is formed, and corresponding limiting flanges and positioning grooves are machined and a sealing ring is assembled. The connector structure is then inserted into the power terminal of the underwater actuator to supply power to the underwater actuator. The vent pipe communicates with the internal space of the underwater actuator through the cavity of the connector housing plugging section. The air pressure inside the underwater actuator can be balanced through the vent pipe to prevent water ingress due to negative pressure causing seal failure, thus ensuring the service life of the underwater actuator.
Claims
1. A connector structure for a power supply cable for an underwater actuator, characterized in that: Includes connector housing (1) and sheath (2). The connector housing (1) has an L-shaped structure. The vertical section of the L-shaped connector housing forms a connection section (3) that connects to the cable housing, and the horizontal section forms a plug-in section (4) that connects to the underwater actuator. The insertion section (4) has a cavity extending along its length. A horizontally extending first partition (5) is provided in the cavity, dividing it into upper and lower chambers. A vertically extending second partition (6) is provided at the rear of the cavity, spaced apart from the first partition (5). The second partition (6) has three holes (7) for two conductive wires and a vent pipe to pass through. The front end face of the plug section (4) is provided with a connector mounting ring (8) surrounding the cavity, and the rear side of the connecting section (3) is provided with a notch (9), which communicates with the cavity. The sheath (2) is fitted onto the connector housing (1) to cover the notch (9), connector mounting ring (8), and cavity, and there is an annular gap between the sheath (2) and the connector mounting ring (8).
2. The connector structure of the underwater actuator power supply cable according to claim 1, characterized in that: The connector housing connecting section (3) is provided with an external thread section, and the top and bottom surfaces of the connector housing insertion section (4) are provided with several spaced ribs.
3. The connector structure of the underwater actuator power supply cable according to claim 1, characterized in that: A limiting flange (10) is provided on the horizontal section of the sheath, and a positioning groove (11) extending along the length direction is provided on the top surface of the horizontal section of the sheath. A sealing ring (12) is fitted on the horizontal section of the sheath and is located between the limiting flange (10) and the positioning groove (11).
4. The connector structure of the underwater actuator power supply cable according to claim 1, characterized in that: The horizontal section of the sheath has arc-shaped grooves on the rear side walls of both sides to form a clamping part (13).
5. The connector structure of the underwater actuator power supply cable according to claim 1, characterized in that: The holes on the second partition (6) through which two conductive wires pass correspond to the two chambers of the cavity, and the holes on the second partition (6) through which the vent pipe passes correspond to the first partition.