Industrial grade shock and pressure resistant terminal block

Abstract

The utility model discloses an industrial grade anti -seismic compression's junction box relates to junction box technical field, and it aims at solving the problem of stress concentration, poor impact resistance and compression resistance effect of the existing industrial grade junction box due to structural defects. It includes box body and box cover sealed installation through bolt, and the opposite side wall of box body is equipped with the threading port of locking structure, and is equipped with the wiring terminal row in the inside. The first grid reinforcing rib is equipped with the support column in the middle of chamber bottom end and side wall to lift the wiring terminal row, and the second grid reinforcing rib is equipped with the plug-in assembly between the chamber one side of box cover. The box cover is also equipped with the extrusion column and antiskid contact pad, and can fix terminal locking screw, and the stable plate is equipped with the stable plate on the both sides of wiring terminal row, and there is the wire arranging groove and the elastic limiting clamping of uniform distribution to fix the wire. The utility model can disperse impact force and pressure, improve structural stability, guarantee electrical connection reliable, and be applicable to chemical industry, metallurgy, mine and other industrial scenes.

Description

Technical Field

[0001] This utility model relates to the technical field of junction boxes, and in particular to an industrial-grade shock-resistant and pressure-resistant junction box. Background Technology

[0002] In industrial production scenarios such as chemical engineering, metallurgy, heavy machinery processing, and mining, junction boxes, as core protective components for electrical wiring connections, play a crucial role in accommodating and protecting internal wire joints and conductive terminals. They must simultaneously resist the erosion of dust, water vapor, and corrosive media, as well as frequent mechanical vibrations, accidental impacts (such as heavy object collisions and equipment falls), and continuous pressure (such as tooling extrusion and environmental pressure). Therefore, their sealing performance, shock resistance, and pressure resistance are subject to extremely high requirements.

[0003] To meet the above usage requirements, existing industrial-grade junction boxes have undergone certain improvements in sealing and shock and pressure resistance: In terms of sealing, most products effectively prevent the intrusion of external impurities by setting elastic sealing components such as rubber sealing rings and silicone gaskets at the connection gap between the box body and the cover; in terms of shock and pressure resistance, the core improvement direction of existing technologies focuses on material optimization, that is, using high-strength engineering plastics or corrosion-resistant metal alloys to make the box body and cover, relying on the mechanical strength of the materials themselves to improve the overall pressure resistance of the junction box. Some products also add buffer cotton and elastic support structures inside the box body to help alleviate the impact of external vibration on internal components.

[0004] However, existing industrial-grade junction boxes have significant shortcomings in their impact and pressure resistance structural design, making it difficult for them to meet the needs of complex industrial scenarios. The side walls, bottom, and top of the existing junction boxes generally employ flat or simple curved structures, lacking specific design for force dispersion. When the junction box is subjected to external impact or continuous pressure, the impact or pressure tends to concentrate directly in localized areas of the side walls, bottom, or top of the cover. Stress dispersion cannot be achieved through structural design. Even with high-strength materials, the concentrated stress can easily exceed the material's load-bearing limit, leading to side wall dents, bottom cracks, or cover warping. This not only compromises the integrity of the sealing structure, allowing dust and moisture to penetrate and damage electrical components, but also shortens the junction box's lifespan. This problem of poor impact and pressure resistance due to stress concentration is particularly prominent in scenarios with high vibration frequencies and frequent impact loads, such as heavy machinery workshops and mines, seriously threatening the operational reliability of electrical systems and urgently requiring structural optimization to address. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an industrial-grade shock-resistant and pressure-resistant junction box that can effectively disperse impact force or pressure and improve impact and pressure resistance.

[0006] The present invention relates to an industrial-grade shock-resistant and pressure-resistant junction box, comprising a box body, a box cover sealed at the top of the box body by bolts, wire passages with locking structures on both opposite side walls of the box body, and a terminal block inside the box body.

[0007] The bottom and side walls of the cavity of the box are provided with first grid reinforcing ribs;

[0008] A support column for lifting the terminal block is provided at the bottom center of the cavity of the box.

[0009] The surface of the lid facing the cavity of the box body is provided with a second mesh reinforcing rib, and an insert assembly is provided between the second mesh reinforcing rib and the first mesh reinforcing rib.

[0010] Furthermore, the insertion assembly includes several connecting rods, which are respectively installed at the edge of the bottom end of the second grid reinforcing rib. Several insert rods are provided at the top of the first grid reinforcing rib. The number of insert rods is adapted to the number of connecting rods. The bottom end of the connecting rod is provided with a cross slot, and the top of the insert rod is provided with a cross plug. After the box cover is installed on the top of the box body, several cross plugs are slidably inserted into several cross slots.

[0011] Furthermore, the first mesh reinforcing rib is integrally formed with the cavity of the box body, and the second mesh reinforcing rib is integrally formed with the box lid.

[0012] Furthermore, a number of pressing posts are provided at the bottom center of the cover. The position and number of pressing posts are adapted to the position and number of terminal locking screws on the terminal block. Contact pads are provided at the bottom of the pressing posts. After the cover is installed on the box body, the contact pads of the pressing posts are in close contact with the screw caps of the terminal locking screws.

[0013] Furthermore, both the inlet and outlet sides of the terminal block are provided with stabilizing plates. The stabilizing plates are installed at the bottom of the cavity of the box via stabilizing posts. The stabilizing plates are provided with cable management slots. The number and position of the cable management slots are adapted to the number and position of the terminal openings on the inlet or outlet side of the terminal block. Each opening of the cable management slot on the stabilizing plate is provided with an elastic limiting clip, which locks and limits the wires within the cable management slot.

[0014] Furthermore, the contact pad is configured as an anti-slip rubber pad.

[0015] Furthermore, each of the cable management channels has multiple elastic limiting clips, which are evenly distributed on the cable management channel.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The first grid reinforcement of the box body and the second grid reinforcement of the box cover can effectively disperse external impact and pressure, solve the stress concentration problem caused by the existing flat / simple curved surface structure of the junction box, avoid box body dents, cracks or box cover warping, and significantly improve the shock resistance and pressure resistance.

[0018] 2. The insert assembly forms a stable connection between the lid and the box body, reduces the relative displacement between the two, enhances the overall structural strength, further improves the impact resistance and stability, and ensures the integrity of the sealing structure.

[0019] 3. The first and second grid reinforcing ribs are integrally formed with the box body and the box cover, respectively, eliminating weak points in the connection, improving the overall structure and durability, extending the service life of the junction box, and making it suitable for complex industrial scenarios such as chemical and metallurgical industries. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is the utility model Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0022] Figure 3 This is a schematic diagram of the connection structure between the extrusion column and the box cover of this utility model;

[0023] Figure 4 This is the utility model Figure 3 A magnified schematic diagram of the partial structure of B in the diagram;

[0024] Figure 5 This is a diagram showing the usage state of this utility model;

[0025] Figure 6 This is a schematic diagram of the connection structure between the support column and the terminal block of this utility model;

[0026] The following are labeled in the attached diagram: 1. Box body; 2. Bolt; 3. Box cover; 4. Locking structure; 5. Cable entry port; 6. Terminal block; 7. First grid reinforcing rib; 8. Support column; 9. Second grid reinforcing rib; 10. Connecting rod; 11. Insert rod; 12. Cross slot; 13. Cross plug; 14. Pressing column; 15. Contact pad; 16. Stabilizing plate; 17. Cable management channel; 18. Elastic limit clip. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] like Figures 1 to 6As shown, the industrial-grade shockproof and pressure-resistant junction box of this utility model includes a box body 1. The top of the box body 1 is sealed with a box cover 3 by bolts 2. Both opposite side walls of the box body 1 are provided with wire passages 5 with locking structures 4. The box body 1 is provided with a terminal block 6 inside.

[0029] The bottom and side walls of the chamber of the box 1 are provided with first grid reinforcing ribs 7;

[0030] The bottom center of the chamber of the box 1 is provided with a support column 8 to lift the terminal block 6;

[0031] The surface of the lid 3 facing the cavity of the box body 1 is provided with a second mesh reinforcing rib 9, and an insert assembly is provided between the second mesh reinforcing rib 9 and the first mesh reinforcing rib 7.

[0032] In this embodiment,

[0033] Box 1: As the main frame, it provides space for the installation of internal components, withstands external impacts and pressure, and is the core supporting component of the junction box;

[0034] Box lid 3: It is sealed to the box body 1 by bolt 2, sealing the top of the box body 1 to isolate dust and moisture, and at the same time, it works with the box body 1 to withstand pressure and protect the internal components;

[0035] The wire passage 5 with locking structure 4: allows the wire to enter and exit the box 1. The locking structure 4 fixes the position of the wire, prevents the wire from loosening, and enhances the sealing of the wire passage.

[0036] Terminal block 6: Enables electrical connection between conductors and is a core functional component for circuit conduction;

[0037] First grid reinforcing rib 7: Distributed at the bottom end and side wall of the chamber 1, the grid structure disperses external impact and pressure, avoids local stress concentration in the chamber 1, and improves the seismic and compressive resistance of the chamber 1;

[0038] Support column 8: Installed at the bottom center of the chamber of box 1, it lifts the terminal block 6, so that the terminal block is away from the bottom of box 1, avoiding the direct transmission of force from the bottom of box 1 to the terminal block, protecting the terminal block from being squeezed, and at the same time, lifting the terminal block 6 facilitates the wiring operation of the terminal block 6.

[0039] The second grid reinforcing rib 9 is set on the side of the lid 3 facing the cavity. It works in conjunction with the first grid reinforcing rib 7 to distribute the pressure on the lid 3, prevent the lid 3 from warping, and enhance the structural strength of the lid 3.

[0040] Insert assembly: connects the first and second grid reinforcing ribs 9, so that the lid 3 and the box body 1 form a whole when subjected to force, reducing relative displacement and improving overall impact resistance stability.

[0041] As a preferred embodiment of the above, the insertion assembly includes a plurality of connecting rods 10, which are respectively installed at the edge of the bottom end of the second grid reinforcing rib 9. The top end of the first grid reinforcing rib 7 is provided with a plurality of insert rods 11, the number of insert rods 11 being adapted to the number of connecting rods 10. The bottom end of the connecting rod 10 is provided with a cross slot 12, and the top end of the insert rod 11 is provided with a cross plug 13. After the cover 3 is installed on the top of the box body 1, the plurality of cross plugs 13 are slidably inserted into the plurality of cross slots 12.

[0042] In this embodiment,

[0043] Connecting rod 10: Installed at the bottom edge of the second grid reinforcing rib 9, serving as the upper connecting structure of the insert assembly, providing an installation carrier for the cross slot 12, and cooperating with the insert rod 11 to achieve docking;

[0044] Insert rod 11: Located at the top of the first grid reinforcing rib 7, the number of which matches the connecting rod 10. The cross plug 13 at the top can be inserted into the cross slot 12, which is the lower connection structure of the insert assembly.

[0045] Phillips head slot 12: It precisely matches the cross head plug 13, provides insertion positioning space, restricts the horizontal relative movement of the plug rod 11 and the connecting rod 10, and ensures a stable connection;

[0046] Cross plug 13: Inserted into cross slot 12 to form a tight insertion structure, enhance the connection strength of the insertion components, and ensure that the cover 3 and the body 1 are subjected to force together.

[0047] As a preferred embodiment of the above, the first mesh reinforcing rib 7 is integrally formed with the cavity of the box body 1, and the second mesh reinforcing rib 9 is integrally formed with the box cover 3;

[0048] In this embodiment,

[0049] The first mesh reinforcing rib 7, which is integrally formed, is directly formed with the cavity of the box body 1, eliminating the connection gap between the reinforcing rib and the box body 1, avoiding weak points, improving the overall structure of the two, and enhancing the load-bearing capacity of the box body 1;

[0050] The second mesh reinforcing rib 9 is integrally formed with the lid 3, which similarly eliminates weak points in the connection, improves the structural stability of the reinforcing rib and the lid 3, and prevents the reinforcing rib from falling off or breaking.

[0051] As a preferred embodiment of the above embodiment, a plurality of pressing posts 14 are provided at the bottom center of the cover 3. The position and number of pressing posts 14 are adapted to the position and number of terminal locking screws on the terminal block 6. A contact pad 15 is provided at the bottom of the pressing post 14. After the cover 3 is installed on the box body 1, the contact pads 15 of the plurality of pressing posts 14 are respectively in close contact with the screw caps of the plurality of terminal locking screws.

[0052] In this embodiment,

[0053] Extrusion column 14: Installed at the bottom center of the cover 3, its position / number is matched with the terminal locking screw. After the cover 3 is locked, pressure is applied to the screw cap to play the role of preventing loosening and pre-tightening, which improves the shock resistance.

[0054] Contact pad 15: It fits tightly against the terminal locking screw cap, which increases friction to prevent the screw from vibrating and loosening, and avoids the extrusion post 14 from directly contacting the screw and causing wear. Moreover, the height of the locking screw is usually not uniform, and the contact pad 15 allows the extrusion post 14 to limit the locking screws of different heights.

[0055] As a preferred embodiment of the above embodiment, both the inlet and outlet sides of the terminal block 6 are provided with a stabilizing plate 16. The stabilizing plate 16 is installed at the bottom of the cavity of the housing 1 by a stabilizing post. The stabilizing plate 16 is provided with a cable management groove 17. The number and position of the cable management groove 17 are adapted to the number and position of the terminal openings on the inlet or outlet side of the terminal block 6. Each opening of the cable management groove 17 of the stabilizing plate 16 is provided with an elastic limiting clip 18. The elastic limiting clip 18 locks and limits the wires in the cable management groove 17.

[0056] In this embodiment,

[0057] Stabilizing plate 16: Located on the inlet / outlet side of terminal block 6, it is used to organize the wire arrangement and prevent the wires from being messy and tangled. Moreover, compared with the ordinary clamping structure, the stabilizing plate 16 has a longer support dimension for the wires in the junction box, reducing the probability of the wires shaking randomly.

[0058] Stabilizing column: Fix the stabilizing plate 16 to the bottom of the chamber 1 of the box body to support the stabilizing plate 16 and ensure that the position of the stabilizing plate 16 does not shift with vibration;

[0059] Cable management channel 17: It is opened on the stabilizing plate 16, and its quantity / position is adapted to the terminal block terminal port to provide a dedicated placement channel for the wires and realize the orderly arrangement of the wires;

[0060] Elastic limit clip 18: Located at the opening of the cable tray 17, it locks the wires through elastic deformation to prevent the wires from coming out of the cable tray 17 due to vibration, ensuring the stable connection between the wires and the terminal block and improving the shock resistance.

[0061] As a preferred embodiment of the above, the contact pad 15 is configured as an anti-slip rubber pad;

[0062] In this embodiment,

[0063] Anti-slip rubber pad: It has good elasticity and anti-slip properties, which can not only fit the screw cap more tightly and increase the anti-loosening friction, but also cushion the screw cap or the extrusion column 14 during compression.

[0064] As a preferred embodiment of the above embodiment, each of the cable management grooves 17 is provided with multiple elastic limiting clips 18, and the multiple elastic limiting clips 18 are evenly distributed on the cable management grooves 17.

[0065] In this embodiment,

[0066] Multiple evenly distributed elastic limiting clips 18: These are evenly distributed on each cable management groove 17, locking the cable from multiple positions. Compared to a single clip, this provides a more comprehensive fixation of the cable, further preventing cable movement.

[0067] The working principle of this utility model is as follows:

[0068] During installation, the wires first enter the box 1 through the wire inlet 5 with locking structure 4, and then connect to the terminal block 6. They are then arranged along the cable management groove 17 of the stabilizing plate 16 and fixed by the elastic limit clip 18. Finally, the locking structure 4 of the wire inlet 5 is fully locked. Then, the box cover 3 is closed, and the cross plug 13 of the plug-in assembly is inserted into the cross slot 12. The box cover 3 is sealed and locked to the box 1 by the bolt 2. At this time, the anti-slip contact pad 15 of the extrusion column 14 is in close contact with the terminal locking screw cap to prevent it from loosening.

[0069] During use, the first and second grid reinforcing ribs 9 disperse external impacts and pressures, avoiding stress concentration; the insert assembly ensures that the cover 3 and the body 1 work together to reduce relative displacement; the support column 8 protects the terminal block from bottom compression, stabilizes the structure, fixes the wires to prevent displacement, and achieves the effect of shock resistance, pressure resistance, and reliable sealing, ensuring the stable operation of the electrical system.

[0070] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An industrial-grade shock-resistant and pressure-resistant junction box, comprising a box body (1), a box cover (3) sealed at the top of the box body (1) by bolts (2), and wire-passing openings (5) with locking structures (4) provided on both opposite side walls of the box body (1); and a terminal block (6) provided inside the box body (1); characterized in that, The bottom end and side wall of the chamber of the box (1) are provided with first grid reinforcing ribs (7); The bottom center of the chamber of the box (1) is provided with a support column (8) to lift the terminal block (6); The cover (3) facing the cavity of the box body (1) is provided with a second mesh reinforcing rib (9), and an insert assembly is provided between the second mesh reinforcing rib (9) and the first mesh reinforcing rib (7).

2. The industrial-grade shock-resistant and pressure-resistant junction box as described in claim 1, characterized in that, The insertion assembly includes several connecting rods (10), which are respectively installed at the edge of the bottom of the second grid reinforcing rib (9). Several insert rods (11) are provided at the top of the first grid reinforcing rib (7). The number of insert rods (11) is matched with the number of connecting rods (10). A cross slot (12) is provided at the bottom of the connecting rod (10). A cross plug (13) is provided at the top of the insert rod (11). After the box cover (3) is installed on the top of the box body (1), several cross plugs (13) are slidably inserted into several cross slots (12).

3. The industrial-grade shock-resistant and pressure-resistant junction box as described in claim 1, characterized in that, The first mesh reinforcing rib (7) is integrally formed with the cavity of the box body (1), and the second mesh reinforcing rib (9) is integrally formed with the box cover (3).

4. The industrial-grade shock-resistant and pressure-resistant junction box as described in claim 1, characterized in that, The bottom center of the cover (3) is provided with several pressing posts (14). The position and number of pressing posts (14) are adapted to the position and number of terminal locking screws on the terminal block (6). The bottom of the pressing posts (14) is provided with contact pads (15). After the cover (3) is installed on the box body (1), the contact pads (15) of several pressing posts (14) are tightly attached to the screw caps of several terminal locking screws respectively.

5. The industrial-grade shock-resistant and pressure-resistant junction box as described in claim 1, characterized in that, The terminal block (6) is provided with a stabilizing plate (16) on both the inlet and outlet sides. The stabilizing plate (16) is installed at the bottom of the cavity of the box (1) by a stabilizing post. The stabilizing plate (16) is provided with a cable management groove (17). The number and position of the cable management groove (17) are adapted to the number and position of the terminal openings on the inlet or outlet side of the terminal block (6). Each opening of the cable management groove (17) of the stabilizing plate (16) is provided with an elastic limiting clip (18). The elastic limiting clip (18) locks the wires in place within the cable management groove (17).

6. The industrial-grade shock-resistant and pressure-resistant junction box as described in claim 4, characterized in that, The contact pad (15) is configured as an anti-slip rubber pad.

7. The industrial-grade shock-resistant and pressure-resistant junction box as described in claim 5, characterized in that, Each of the cable management channels (17) has multiple elastic limiting clips (18), which are evenly distributed on the cable management channels (17).

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