Cabin-penetrating watertight junction box for underwater sensor

Abstract

The invention discloses a cabin-penetrating watertight junction box for an underwater sensor, and belongs to the technical field of watertight wiring, the cabin-penetrating watertight junction box comprises a box body and a box cover, a sealing structure is installed on the side wall, close to the top end, of the box body, and the sealing structure is used for filling a gap between the box body and a cabin wall when the box body penetrates through the cabin wall for installation; the sealing structure comprises an outer rubber sleeve arranged on the outer wall of the box body in a sleeving mode, a fluid medium is arranged in the outer rubber sleeve, and when the box body penetrates through the cabin wall, the gap can extrude the outer rubber sleeve to enable the fluid medium in the outer rubber sleeve to flow to the gap for filling, an outer edge plate is arranged at the top of the box body, and one face of the inner side of the outer rubber sleeve is in contact with the outer wall of the box body. One surface of the top is in contact with the bottom of the outer edge plate to form an inclined structure on one surface, far away from the box body, of the outer rubber sleeve. The sealing structure is composed of the outer rubber sleeve and the internal fluid medium, the sealing structure can fill the gap between the box body and the bulkhead by means of the flowable characteristic of the fluid medium, and the sealing effect can be improved without welding during installation.

Description

Technical Field

[0001] The invention relates to the technical field of watertight wiring, and in particular to a cabin-penetrating watertight wiring box for an underwater sensor. Background Art

[0002] A watertight junction box is a waterproof device specially designed for electrical wiring or cable connection. The main function of a watertight junction box is to prevent water, moisture and pollutants from entering the interior of the device, thereby protecting the normal operation of electrical equipment. It is usually made of waterproof materials such as stainless steel, aluminum alloy, plastic and fiberglass, which have good sealing performance and corrosion resistance. After the underwater sensors for ships are laid out at the corresponding points, the underwater integration of signal cables is one of the key points to ensure the effective operation of the sensors. Therefore, a watertight junction box is required to connect the in-ship equipment with each underwater sensor, and the watertight junction box also needs to be installed through the bulkhead.

[0003] However, when installing a traditional through-cabin watertight junction box, the box body is usually welded to the mounting hole opened in the bulkhead. Although this method can achieve sealing inside and outside the ship, it is very troublesome to disassemble. In addition, the welding joints are more prone to corrosion due to the redox reaction between the two different metals. In addition, since the watertight junction box needs to be connected to an underwater sensor, a wiring plug needs to be installed. Traditional plug-in cannot achieve effective insulation and waterproofing, resulting in easy failure of underwater plug-in and unplugging. Combined with the above problems, it can be seen that the traditional watertight junction box is inconvenient to install when used through the cabin, and the plug-in connector is prone to leakage. Summary of the invention

[0004] The present invention aims to solve the problems that the above-mentioned traditional watertight junction boxes are inconvenient to install through the cabin and are not stable when plugging and unplugging the wiring, and to provide a through-cabin watertight junction box for underwater sensors, which has the advantages of not requiring bolts to fix, easy disassembly and assembly, good corrosion resistance, underwater plugging and unplugging of wiring, and long service life.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A through-cabin watertight junction box for underwater sensors, comprising a box body and a box cover, wherein an external joint is installed on the box body, an internal joint is installed on the box cover, and a sealing structure is installed on the side wall of the box body close to the top end, wherein the sealing structure is used to fill the gap between the box body and the bulkhead when the box body is installed through the bulkhead;

[0007] The sealing structure includes an outer rubber sleeve which is sleeved around the outer wall of the box body, and a fluid medium is arranged inside the outer rubber sleeve, so that when the box body passes through the bulkhead, the gap can squeeze the outer rubber sleeve so that the fluid medium inside the outer rubber sleeve flows to the gap for filling, and an outer edge plate is arranged on the top of the box body, and one side of the inner side of the outer rubber sleeve is in contact with the outer wall of the box body, and one side of the top is in contact with the bottom of the outer edge plate, so as to form an inclined structure on one side of the outer rubber sleeve away from the box body.

[0008] Preferably, a limiting plate is installed at one end of the outer edge plate away from the box body, and the limiting plate is in contact with the outer rubber sleeve before deformation.

[0009] Preferably, a guide groove is provided on the outer wall of the box body, the outer rubber sleeve is partially installed inside the guide groove, and the length of the outer rubber sleeve before deformation at the installation position is smaller than the length of the guide groove, an inner groove is provided below the guide groove, and an inclined hook plate is installed in the inner groove through a torsion spring shaft, which is used to push the hook plate to tilt outward when the outer rubber sleeve is deformed downward.

[0010] Preferably, the inner groove penetrates deeper into the box body than the guide groove, and is used to prevent the hook plate from rotating to a vertical state when the hook plate is not subjected to the thrust of the outer rubber sleeve.

[0011] Preferably, the outer rubber sleeve and the outer wall of the box body, as well as the outer rubber sleeve and the bottom of the outer edge plate are fixed by an adhesive layer.

[0012] Preferably, the external connector includes a threaded seat and a base, a sealing plate is installed in the base, and an electrode seat is installed below the sealing plate, so that when the sub-plug is inserted into the external connector, the sealing plate is pushed to contact the electrode seat to achieve current conduction.

[0013] Preferably, a plurality of drainage holes are provided on the inner wall of the threaded seat, and the threaded seat and the base are both insulating seats.

[0014] Preferably, a slide groove is provided on the inner wall of the base, the sealing plate is connected to the slide groove via a slide block, and a spring is installed below the slide block.

[0015] Preferably, a sealing strip is provided at the bottom of the box cover to fill the gap between the box cover and the box body when the box cover is connected to the box body by bolts.

[0016] Preferably, a wire pressing frame and a bus bar are arranged in the box body.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The sealing structure is formed by arranging an outer rubber sleeve and an internal fluid medium. The fluid medium has the flowable property that the sealing structure can fill the gap between the box body and the bulkhead. The sealing effect can be improved without welding during installation. The hook plate is pushed to expand when the fluid medium flows. The upper and lower parts of the box body can be restricted to the inner and outer sides of the bulkhead in cooperation with the outer edge plate, so that the box body can be clamped. The junction box can be firmly fixed without additional bolts. Since no holes are required, the corrosion resistance of the junction box can be increased.

[0019] 2. In the present invention, the external connector uses a sealing plate that moves up and down in the cavity of the base to contact and disconnect with the electrode seat. The sealing plate is used to prevent liquid from entering the electrode seat, thereby realizing underwater plugging and unplugging of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure when the box body of the present invention is not installed in the bulkhead.

[0021] Figure 2 It is a schematic diagram of the overall structure when the box body of the present invention is installed in the bulkhead.

[0022] Figure 3 It is a schematic diagram of the position distribution of the sealing structure and the hook plate of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the external joint of the present invention.

[0024] Figure 5 It is a schematic diagram of the sealing strip of the present invention being installed on the box cover.

[0025] Figure 6 Schematic diagram of the internal structure of the box body of the present invention

[0026] In the figure: 1, box body, 2, box cover, 3, external joint, 4, internal joint, 5, outer edge plate, 6, sealing structure, 7, bulkhead, 8, hook plate, 9, outer rubber sleeve, 10, fluid medium, 11, limit plate, 12, adhesive layer, 13, guide groove, 14, inner groove, 15, torsion spring shaft, 16, sub-plug, 17, conductive electrode, 18, threaded seat, 19, base, 20, drainage hole, 21, sealing plate, 22, slide groove, 23, slider, 24, spring, 25, electrode seat, 26, sealing strip, 27, bus, 28, wire pressing frame. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] like Figure 1As shown, a through-cabin watertight junction box for underwater sensors is disclosed, comprising a box body 1 and a box cover 2. An external connector 3 is installed on the box body 1, and an internal connector 4 is installed on the box cover 2. When installed, the box body 1 is located on the outside of the cabin, and the box cover 2 is located on the inside of the cabin. When in use, the external connector 3 is used to connect the sub-plug 16 of the underwater sensor. Several external connectors 3 are provided, and one internal connector 4 is provided, which can solve the problem of chaotic and unconcentrated sensor wires laid underwater.

[0029] like Figure 2 and Figure 3 As shown, a sealing structure 6 is installed on the side wall of the box body 1 near the top, and the sealing structure 6 is used to fill the gap between the box body 1 and the bulkhead 7 when the box body 1 is installed through the bulkhead 7; the sealing structure 6 includes an outer rubber sleeve 9 that is sleeved on the outer wall of the box body 1, and a fluid medium 10 is arranged inside the outer rubber sleeve 9, so that when the box body 1 passes through the bulkhead 7, the gap can squeeze the outer rubber sleeve 9 so that the fluid medium 10 inside the outer rubber sleeve 9 flows to the gap for filling, and an outer edge plate 5 is arranged on the top of the box body 1, and one side of the inner side of the outer rubber sleeve 9 is in contact with the outer wall of the box body 1, and one side of the top is in contact with the bottom of the outer edge plate 5, so as to form a side of the outer rubber sleeve 9 away from the box body 1 that is inclined. When the box body 1 is installed through the cabin, a hole needs to be opened in the cabin wall first. The hole is used to place the box body 1. In order to facilitate the insertion of the box body 1, and the difference in precision makes it impossible for the opened installation hole to perfectly fit the outer wall of the box body 1, a installation hole slightly larger than the size of the box body 1 is usually opened. After the traditional box body 1 is inserted into the installation hole, the gap between the box body 1 and the installation hole is welded shut, thereby firmly fixing the box body 1 on the cabin wall. However, this method makes it very troublesome to disassemble the box body 1, and the welding point and the cabin wall are made of different metals. The two metals are also prone to oxidation-reduction reactions when in contact underwater, resulting in poor corrosion resistance of the welding point. Figure 2 and Figure 3 In the embodiment, the sealing structure 6 is used to fill the mounting holes on the box body 1 and the bulkhead. The sealing structure 6 mainly realizes its flowable property through the fluid medium 10. In order to ensure that the fluid medium 10 flows with less obstruction, the fluid medium 10 is installed inside the outer rubber sleeve 9. Due to the existence of the outer edge plate 5, when the box body 1 is pushed toward the bulkhead, the outer edge plate 5 squeezes the outer rubber sleeve 9 downward, and the fluid medium 10 flows downward to the gap to fill the gap. At this time, the fluid medium 10 wrapped by the outer rubber sleeve 9 exists under the outer edge plate 5 and on the side wall of the box body 1, so the friction and extrusion force between the box body 1 and the bulkhead can be increased to achieve the fixation of the box body 1. In order to facilitate the smooth downward flow of the fluid medium 10, the side of the outer rubber sleeve 9 away from the box body 1 is inclined, so that a part of the sealing structure 6 can smoothly enter the gap between the box body 1 and the bulkhead.

[0030] like Figure 3As shown, a limiting plate 11 is installed at one end of the outer edge plate 5 away from the box body 1, and the limiting plate 11 is in contact with the outer rubber sleeve 9 before deformation. The existence of the limiting plate 11 limits the fluid medium 10 from flowing toward the end of the outer edge plate 5 away from the box body 1, so that after being restricted laterally, the fluid medium 10 can only be transferred downward in large quantities, which can most efficiently control the flow direction of the fluid medium 10, so that it can fully fill the gap and achieve a sealing effect.

[0031] Still for reference Figure 3 A guide groove 13 is provided on the outer wall of the box body 1, and the outer rubber sleeve 9 is partially installed inside the guide groove 13, and the length of the outer rubber sleeve 9 before deformation at the installation position is smaller than the length of the guide groove 13, and an inner groove 14 is provided below the guide groove 13, and an inclined hook plate 8 is installed in the inner groove 14 through a torsion spring shaft 15, which is used to push the hook plate 8 to tilt outward when the outer rubber sleeve 9 is deformed downward. As can be seen from the above, in order to be able to efficiently control the downward flow of the fluid medium 10, a guide groove 13 is also provided to guide the flow of the fluid medium 10. Since the box body 1 is squeezed and fixed only by the deformation of the sealing structure 6, the firmness of the fixation may be affected in extreme cases. Therefore, a hook plate 8 is also installed on the outer wall of the box body 1, so that after the box body 1 is in place, the hook plate 8 can be unfolded to form an upper and lower clamping plate structure with the outer edge plate 5. Since the outer edge size of the clamping plate structure exceeds the mounting hole, the up and down movement of the box body 1 can be limited. Since the fluid medium 10 can also play a role of elastic support for the outer edge plate 5, the box body 1 can be pulled upward, and the hook plate 8 of the box body 1 is tightly attached to the outer side of the bulkhead. In this way, the outer edge plate 5 and the hook plate 8 clamp the inside and outside of the bulkhead up and down, and the box body 1 is firmly fixed. In order to facilitate the unfolding of the hook plate 8, an inner groove 14 is set below the guide groove 13. One end of the hook plate 8 is rotatably installed in the inner groove 14 through a torsion spring shaft 15. In this way, when the fluid medium 10 moves downward, the hook plate 8 can be pushed to unfold, thereby achieving a clamping and fixing effect.

[0032] like Figure 3 As shown, the depth of the inner groove 14 into the box body 1 is greater than the guide groove 13, which is used to prevent the hook plate 8 from rotating to a vertical state when the hook plate 8 is not subjected to the thrust of the outer rubber sleeve 9. The hook plate 8 has a maximum inclination angle and a minimum inclination angle. The minimum inclination angle is set to prevent the hook plate 8 from being in a numerical state. This is to facilitate the fluid medium 10 to open the hook plate 8. The maximum inclination angle is set to avoid excessive rotation of the hook plate 8 and failure to exert thrust on the outer side of the bulkhead.

[0033] According to the structure that the hook plate 8 is controlled by the fluid medium 10, it can be obtained that when the box body 1 is installed, it is divided into three stages. In the first stage, the operator applies a force to insert the box body 1 into the bulkhead, first squeezing the outer rubber sleeve 9 to make the fluid medium 10 move downward. At this time, the thrust on the hook plate 8 is small, so that the hook plate 8 can continue to move downward in the gap between the box body 1 and the bulkhead. Entering the second stage, the force is continued to be applied, the box body 1 moves downward, and the fluid medium 10 continues to move downward. The top of the hook plate 8 is separated from the gap. Because it is still pushed by the fluid medium 10, the hook plate 8 tilts outward. Entering the third stage, the box body 1 is released. Since the flow of the fluid medium 10 in the first and second stages is caused by the extrusion deformation of the outer rubber sleeve 9, in this stage, after the force disappears, the outer rubber sleeve 9 has a restoring elastic force, which makes the outer edge plate 5 have a tendency to move upward. Because the function of the hook plate 8 is to limit the upward movement of the box body 1, the two forces reach a balance and the box body 1 is fixed. If the junction box needs to be disassembled, it is only necessary to puncture the outer rubber sleeve 9 to allow the fluid medium 10 to flow out, and the elastic force supporting the outer edge plate 5 disappears. The box body 1 can move down, and the hook plate 8 can also be restored to a slightly inclined state due to the action of the torsion spring shaft 15. The box body 1 can be easily pulled out from the bulkhead to complete the disassembly.

[0034] The outer rubber sleeve 9 and the outer wall of the box body 1, as well as the outer rubber sleeve 9 and the bottom of the outer edge plate 5 are fixed by an adhesive layer 12. The adhesive layer 12 is used to facilitate the fixation of the outer rubber sleeve 9 and also to facilitate the replacement operation after puncturing.

[0035] like Figure 4 As shown, the external connector 3 includes a threaded seat 18 and a base 19, a sealing plate 21 is installed in the base 19, and an electrode seat 25 is installed below the sealing plate 21, so that when the sub-plug 16 is inserted into the external connector 3, the sealing plate 21 is pushed to contact the electrode seat 25 to realize current conduction. The sub-plug 16 is a connector of an underwater sensor. When the junction box is underwater, the sealing plate 21 can prevent water from contacting the electrode seat 25. When the sub-plug 16 is threadedly inserted into the threaded seat 18, the conductive electrode 17 on the sub-plug 16 can apply a thrust to the sealing plate 21, so that the sealing plate 21 contacts the electrode seat 25, the current is conducted, and the transmission of electrical signals is realized.

[0036] Since the external connector 3 is underwater, water will inevitably enter the threaded seat 18 when the sub-plug 16 is not connected. Therefore, a plurality of drainage holes 20 are provided on the inner wall of the threaded seat 18. The threaded seat 18 and the base 19 are both insulating seats. The drainage holes 20 can squeeze out the water in the threaded seat 18 when the sub-plug 16 is pushed into the threaded seat 18, thereby preventing the sealing of the sealing plate 21 from being damaged by excessive water pressure. Moreover, the threaded seat 18 and the base 19 are both insulating seats, which can effectively prevent the conductive electrode 17 and the electrode seat 25 from leaking electricity.

[0037] The wiring operation is mentioned above, and when unplugging the wire, the sub-plug 16 can be disengaged from the threaded seat 18 by rotating in the opposite direction. In order to ensure that the electrode seat 25 does not contact water, a slide groove 22 is opened on the inner wall of the base 19, and the sealing plate 21 is connected to the slide groove 22 through a slider 23. A spring 24 is installed under the slider 23. The sealing plate 21 continues to move upward under the elastic force of the spring 24 to always isolate the water from contacting the electrode seat 25.

[0038] like Figure 5 As shown, a sealing strip 26 is provided at the bottom of the box cover 2 to fill the gap between the box cover 2 and the box body 1 when the box cover 2 is connected to the box body 1 by bolts. The sealing strip 26 seals the inside of the box body 1.

[0039] like Figure 6 As shown, a wire pressing frame 28 and a bus 27 are arranged in the box body 1. In order to ensure the combination of multiple external connectors 3 and one internal connector 4, the wire pressing frame 28 is used to fix the redundant cables, and the bus 27 is used to gather the cables to one internal connector 4, so as to achieve a neat effect of multiple incoming lines and one outgoing line.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A watertight junction box for underwater sensors, comprising a box body (1) and a box cover (2), wherein an external connector (3) is mounted on the box body (1), and an internal connector (4) is mounted on the box cover (2), characterized in that: A sealing structure (6) is installed on the side wall of the box body (1) close to the top end, and the sealing structure (6) is used to fill the gap between the box body (1) and the bulkhead (7) when the box body (1) is installed through the bulkhead (7); The sealing structure (6) comprises an outer rubber sleeve (9) which is sleeved around the outer wall of the box body (1), and a fluid medium (10) is arranged inside the outer rubber sleeve (9), so that when the box body (1) passes through the bulkhead (7), the gap can squeeze the outer rubber sleeve (9) so that the fluid medium (10) inside the outer rubber sleeve (9) flows into the gap to fill it. An outer edge plate (5) is arranged on the top of the box body (1), and one side of the inner side of the outer rubber sleeve (9) is in contact with the outer wall of the box body (1), and one side of the top is in contact with the bottom of the outer edge plate (5), so as to form an inclined structure on the side of the outer rubber sleeve (9) away from the box body (1).

2. A watertight junction box for underwater sensors according to claim 1, characterized in that: A limiting plate (11) is installed at one end of the outer edge plate (5) away from the box body (1), and the limiting plate (11) is in contact with the outer rubber sleeve (9) before deformation.

3. A watertight junction box for underwater sensors according to claim 2, characterized in that: The outer wall of the box body (1) is provided with a guide groove (13), the outer rubber sleeve (9) is partially installed inside the guide groove (13), and the length of the outer rubber sleeve (9) before deformation at the installation position is smaller than the length of the guide groove (13), an inner groove (14) is provided below the guide groove (13), and an inclined hook plate (8) is installed in the inner groove (14) via a torsion spring shaft (15), so as to push the hook plate (8) to tilt outward when the outer rubber sleeve (9) is deformed downward.

4. A watertight junction box for underwater sensors according to claim 3, characterized in that: The inner groove (14) penetrates deeper into the box body (1) than the guide groove (13), and is used to prevent the hook plate (8) from rotating to a vertical state when the hook plate (8) is not pushed by the outer rubber sleeve (9).

5. A watertight junction box for underwater sensors according to any one of claims 1 to 4, characterized in that: The outer rubber sleeve (9) and the outer wall of the box body (1), as well as the outer rubber sleeve (9) and the bottom of the outer edge plate (5) are all fixed via an adhesive layer (12).

6. A watertight junction box for underwater sensors according to claim 1, characterized in that: The external connector (3) comprises a threaded seat (18) and a base (19); a sealing plate (21) is installed inside the base (19); an electrode seat (25) is installed below the sealing plate (21), so that when the sub-plug (16) is inserted into the external connector (3), the sealing plate (21) is pushed to contact the electrode seat (25) to realize current conduction.

7. A watertight junction box for underwater sensors according to claim 6, characterized in that: The inner wall of the threaded seat (18) is provided with a plurality of drainage holes (20), and the threaded seat (18) and the base (19) are both insulating seats.

8. A watertight junction box for underwater sensors according to claim 6, characterized in that: The inner wall of the base (19) is provided with a slide groove (22), the sealing plate (21) is connected to the slide groove (22) via a slider (23), and a spring (24) is installed below the slider (23).

9. A watertight junction box for underwater sensors according to claim 1, characterized in that: A sealing strip (26) is provided at the bottom of the box cover (2) and is used to fill the gap between the box cover (2) and the box body (1) when the box cover (2) is connected to the box body (1) by bolts.

10. A watertight junction box for underwater sensors according to claim 1, characterized in that: A wire pressing frame (28) and a bus bar (27) are arranged inside the box body (1).

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