A terminal box for an oil level gauge

Abstract

The utility model provides a kind of terminal box for oil level gauge, belong to oil level gauge accessory technical field, including box body, the outer wall of box body is fixedly connected with the terminal port being constituted with the top of cover connecting disc one plane, prevent the leakage of wire threading place through the sealing structure such as rubber sealing sleeve of terminal port itself, further block outside oil dirt, dust from the connection gap of port and box body, the inner chamber of box body is provided with the space separator for independent each wiring area, and space separator can freely adjust the space of each wiring area, to improve the utilization efficiency of box body internal space, it is convenient to maintain and function expansion, by space separator, terminal box interior is divided into power wiring area, signal wiring area, three independent spaces of terminal area. Each space is separated by insulating partition, and the partition is made of high-strength epoxy resin material, with good insulation performance and mechanical strength, increasing the safety of use process.

Description

Technical Field

[0001] This utility model relates to the technical field of oil level gauge accessories, specifically a junction box for an oil level gauge. Background Technology

[0002] Oil level gauge junction boxes are connection accessories used in oil level gauges in the petroleum, chemical, and automotive industries. Their core function is to achieve a safe connection between the oil level gauge and external circuits, while providing protection for internal wiring terminals and ensuring stable transmission of oil level detection signals. They are a core component for signal transmission safety protection in oil level monitoring systems, and the junction box is a key accessory for achieving the connection between the oil level gauge and external circuits and ensuring stable signal transmission.

[0003] The following problems were found in the relevant technology: In environments where there is long-term contact with oil and moisture, oil can easily seep into the box through the gaps between the cover and the box body and the wire gaps at the wiring ports, causing corrosion and oxidation of the wiring terminals and resulting in poor contact. At the same time, the moisture in the environment will increase the risk of short circuits at the terminals. Especially in low-temperature environments, it may also cause the insulation layer of the wires to age and break, seriously affecting the stable transmission of oil level signals and even causing equipment failure. To address this, we have proposed a new type of junction box for oil level gauges.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the safety sealing problem of junction boxes in the prior art, this utility model provides a junction box for oil level gauges, employing an integrated molding structure combined with a spatial partitioning structure to achieve safe use of the junction box. Its specific technical solution is as follows: A junction box for an oil level gauge includes a box body, a cover plate integrally formed therewith being fixedly connected to the top of the box body, a wiring port formed with the top of the cover plate being fixedly connected to the outer wall of the box body, a space divider for dividing independent wiring areas in the inner cavity of the box body, and the space divider can be freely adjusted in the space of each wiring area, a sealing groove is provided on the top of the cover plate, and the bottom of the box body is a shock-resistant irregular bottom for protecting the wiring terminals.

[0006] In the above technical solution, the space partition includes a support shaft fixed to the bottom of the inner wall of the box, a fixed partition plate sleeved on the outer wall of the support shaft and fitted to the two sides of the wiring port, a movable partition plate slidably arranged on the circumferential outer wall of the support shaft to form a Y-shape with the two fixed partition plates, and the movable partition plate slides against the inner wall of the box, and a locking member is provided on the outer wall of the movable partition plate.

[0007] The locking element includes a semi-enclosed follower seat fixed to the outer wall of the movable partition plate, and the semi-enclosed follower seat is attached to the outer wall of the support shaft. A fixing element is threaded onto the semi-enclosed follower seat.

[0008] The outer wall of the support shaft is provided with a semi-circular docking groove, and the outer wall of the movable partition is fixed with an anti-detachment slider that is slidably disposed on the inner wall of the docking groove.

[0009] Both the moving partition and the fixed partition have wiring grooves on their tops.

[0010] The top of the outer wall of the wiring port is integrated with the top of the cover plate.

[0011] The earthquake-resistant irregular bottom has a downward-convex arc shape.

[0012] The inner wall of the box is coated with a rubber sealing liner.

[0013] Both the moving partition and the fixed partition are made of polycarbonate.

[0014] The longitudinal section of the sealing groove is U-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. After installation, the cover can cover the top edge of the port to form a double seal. The sealing ring is embedded in the U-shaped sealing groove of the cover plate. With the pressing force of the cover, a ring-shaped sealing strip is formed to prevent oil and dust from entering from the gap between the cover and the plate.

[0016] 2. The shock-resistant irregular bottom of the box is a downward-convex arc structure, forming a hollow buffer cavity inside. When the equipment vibrates, the arc structure can absorb more than 30% of the vibration energy through elastic deformation. The vibration transmission rate is reduced by 40% compared with the traditional flat bottom, reducing the direct impact of vibration on the terminals inside the box. At the same time, the hollow cavity keeps the terminals 5-10mm away from the mounting surface, preventing protrusions on the mounting surface from hitting the terminals and further protecting the terminal connection structure.

[0017] 3. The space divider forms a Y-shaped partition within the housing. Two fixed partitions initially divide the power supply area and the signal area, while the movable partition can slide around the support shaft and be fixed by a locking mechanism, allowing for flexible adjustment of the space between the grounding area and other areas. This design can accommodate the wiring requirements of oil level gauges of different specifications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a junction box for an oil level gauge according to this utility model. Figure I ; Figure 2 This is a schematic diagram of the structure of a junction box for an oil level gauge according to this utility model. Figure II ; Figure 3 This is a schematic diagram of the structure of a junction box for an oil level gauge according to this utility model. Figure III ; Figure 4 This is a structural schematic diagram of the movable partition and support shaft of this utility model; in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-box body, 2-box cover receiving plate, 3-wiring port, 4-sealing groove, 5-vibration-resistant irregular bottom, 6-support shaft, 7-fixed partition plate, 8-moving partition plate, 9-semi-enclosed follower seat, 10-docking slide, 11-anti-detachment slider, 12-wiring groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The following are specific implementation cases and appendices. Figure 1-4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0021] A junction box for an oil level gauge includes a box body 1. A cover plate 2 integrally formed therefrom is fixedly connected to the top of the box body 1. The box body 1 and the cover plate 2 are integrally injection molded from high-strength engineering plastics such as flame-retardant ABS or glass fiber reinforced PA66. The wall thickness is controlled at 3-5mm to balance lightweight and structural strength. The outer wall is frosted to enhance surface wear resistance and avoid appearance damage caused by oil stains and friction during long-term use. The inner wall is smoothed to facilitate the fitting and installation of the sealing liner and reduce sealing gaps.

[0022] The outer wall of the housing 1 is fixedly connected to a wiring port 3 that forms a plane with the top of the cover receiving plate 2. After the cover is installed, the edge of the cover can cover the top edge of the wiring port 3, forming a "double-seal protection". The wiring port 3 itself has a sealing structure, such as a rubber sealing sleeve, to prevent leakage at the wire passage. The cover further prevents external oil and dust from entering through the connection gap between the port and the housing. The inner wall of the wiring port 3 can be embedded with an oil-resistant rubber sealing sleeve made of fluororubber with a hardness of 60-70 Shore A. The inner diameter of the sealing sleeve is 0.5-1mm smaller than the wire diameter. When the wire passes through, the sealing sleeve generates elastic compression on the outer wall of the wire, eliminating the wire passage gap.

[0023] The inner cavity of box 1 is equipped with space dividers for independent wiring areas. These space dividers are adjustable to accommodate the space in each wiring area. To improve the utilization efficiency of the internal space of box 1 and facilitate maintenance and functional expansion, the junction box is divided into three independent spaces: a power wiring area, a signal wiring area, and a grounding area. Each space is separated by an insulating partition made of high-strength epoxy resin, which provides excellent insulation and mechanical strength, increasing safety during use.

[0024] The top of the cover plate 2 is provided with a sealing groove 4, and the bottom of the box body 1 is a shock-resistant irregular bottom 5 for protecting the wiring terminals. The shock-resistant irregular bottom 5 can reduce the transmission of vibration to the wiring terminals inside the box.

[0025] The space divider includes a support shaft 6 fixed to the bottom of the inner wall of the box 1. The outer wall of the support shaft 6 is fitted with fixed partition plates 7 that fit against the two sides of the wiring port 3. One side of the two fixed partition plates 7 is symmetrically fixed to the outer wall of the support shaft 6, and the other side of the two fixed partition plates 7 fits against the inner wall of the box 1 and is located on both sides of the wiring port 3.

[0026] The outer circumferential wall of the support shaft 6 is slidably provided with a movable partition 8 that forms a Y-shape with the two fixed partitions 7. The movable partition 8 slides against the inner wall of the box 1, and a locking element is provided on the outer wall of the movable partition 8. The two fixed partitions 7 and the movable partition 8 form a "Y" shape. By adjusting the position of the movable partition 8, the size of the two spaces can be adjusted to facilitate the application of wiring terminals in different spaces.

[0027] It is worth noting that the locking component includes a semi-enclosed follower seat 9 fixed to the outer wall of the movable partition 8, and the semi-enclosed follower seat 9 is attached to the outer wall of the support shaft 6. A fixing component is threaded onto the semi-enclosed follower seat 9. The fixing component can be a bolt. The fixing component is threadedly connected to the semi-enclosed follower seat 9. After adjusting the internal space of the box 1 through the movable partition 8, the fixing component is screwed on, so that the fixing component is locked onto the outer wall of the support shaft 6.

[0028] In addition, a semi-circular docking groove 10 is formed on the outer wall of the support shaft 6, and an anti-detachment slider 11 is fixedly connected to the outer wall of the movable partition 8 and slidably disposed on the inner wall of the docking groove 10. The anti-detachment slider 11 is composed of a sliding rod and a ball fixedly connected. The longitudinal section of both the docking groove 10 and the anti-detachment slider 11 is T-shaped, which ensures that the movable partition 8 slides against the outer wall of the support shaft 6 and prevents the movable partition 8 from detaching from the support shaft 6.

[0029] Both the moving partition 8 and the fixed partition 7 have wiring grooves 12 on their tops.

[0030] In addition, the top of the outer wall of the wiring port 3 is integrated with the top of the cover plate 2, which increases the stability of the wiring port 3 through the integrated structure.

[0031] The anti-vibration irregular bottom 5 has a downward convex arc shape. In high-frequency vibration application scenarios, the hollow convex cavity of the convex bottom can absorb some vibration energy and reduce the transmission of vibration to the wiring terminals inside the box, preventing the terminals from loosening due to long-term vibration. Compared with the flat bottom, the vibration conductivity is reduced, ensuring stable signal transmission.

[0032] Furthermore, the inner wall of the box 1 is coated with a rubber sealing liner, which can be a fluororubber liner. The rubber sealing liner has the effect of being oil-resistant and corrosion-resistant, and can cope with the intrusion of moisture, oil and corrosive gases in complex environments. The sealing liner is tightly fitted to the inner wall of the junction box.

[0033] The interior is bonded and fixed with strong oil-resistant adhesive, and the seams are seamlessly treated with a hot vulcanization process to ensure that the entire inner wall is completely covered, forming the first line of defense and effectively preventing external substances from seeping in through the gaps in the box.

[0034] Both the moving partition 8 and the fixed partition 7 are made of polycarbonate. Polycarbonate has excellent electrical insulation properties, a relatively stable dielectric constant within a certain frequency range, and a dielectric loss tangent ≤0.0051kHz. This allows the partitions to effectively isolate electrical signals from different wiring areas, preventing signal interference between different circuits. It also prevents short circuits caused by partition insulation failure, ensuring the safe operation of the electrical system within the junction box.

[0035] The longitudinal section of the sealing groove 4 is U-shaped. The U-shaped design allows the sealing ring to be embedded inside the sealing groove 4, ensuring the sealing effect of the entire junction box.

[0036] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A junction box for an oil level gauge, characterized in that, The box includes a housing (1), the top of which is fixedly connected to a cover plate (2) integrally formed therewith. The outer wall of the housing (1) is fixedly connected to a wiring port (3) that forms a plane with the top of the cover plate (2). The inner cavity of the housing (1) is provided with a space divider for separating independent wiring areas, and the space divider can freely adjust the space of each wiring area. The top of the cover plate (2) is provided with a sealing groove (4), and the bottom of the housing (1) is a shock-resistant irregular bottom (5) for protecting the wiring terminals.

2. The junction box for an oil level gauge according to claim 1, characterized in that: The space divider includes a support shaft (6) fixed to the bottom of the inner wall of the box (1). The outer wall of the support shaft (6) is fitted with fixed partitions (7) that fit against the two sides of the wiring port (3). The circumferential outer wall of the support shaft (6) is slidably provided with a movable partition (8) that forms a Y-shape with the two fixed partitions (7). The movable partition (8) slides against the inner wall of the box (1). The outer wall of the movable partition (8) is provided with a locking element.

3. The junction box for an oil level gauge according to claim 2, characterized in that: The locking element includes a semi-enclosed follower seat (9) fixed to the outer wall of the movable partition (8), and the semi-enclosed follower seat (9) is attached to the outer wall of the support shaft (6), and a fixing element is threaded onto the semi-enclosed follower seat (9).

4. A junction box for an oil level gauge according to claim 2, characterized in that: The outer wall of the support shaft (6) is provided with a semi-circular docking groove (10), and the outer wall of the movable partition (8) is fixed with an anti-detachment slider (11) that is slidably disposed on the inner wall of the docking groove (10).

5. A junction box for an oil level gauge according to claim 2, characterized in that: Both the moving partition (8) and the fixed partition (7) have wiring grooves (12) on their tops.

6. A junction box for an oil level gauge according to claim 1, characterized in that: The top of the outer wall of the wiring port (3) is integrated with the top of the cover plate (2).

7. A junction box for an oil level gauge according to claim 1, characterized in that: The earthquake-resistant irregular bottom (5) is an arc shape that bulges downward.

8. A junction box for an oil level gauge according to claim 1, characterized in that: The inner wall of the box (1) is coated with a rubber sealing liner.

9. A junction box for an oil level gauge according to claim 2, characterized in that: Both the moving partition (8) and the fixed partition (7) are made of polycarbonate.

10. A junction box for an oil level gauge according to claim 1, characterized in that: The longitudinal section of the sealing groove (4) is U-shaped.

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