A terminal block for injection molded main terminals

Abstract

The utility model belongs to electrical connection technical field especially relates to a kind of wiring panel of injection molding main terminal, including shell and terminal, ring groove is set up on terminal, there is sealing ring in ring groove, sealing ring includes first waterproof ring, second waterproof ring and third waterproof ring, ring groove is set up on terminal and is set sealing ring, the gap that can fill in the thermal expansion and cold shrinkage between terminal and shell, effectively prevent water into equipment shell inside, the electrical element inside equipment is protected, because sealing ring sets up multilayer structure, by first waterproof ring, second waterproof ring and third waterproof ring, terminal and shell can better adapt the thermal expansion and cold shrinkage change, further improve sealing effect, prolong the service life of wiring panel;Compared with prior art, the utility model improves waterproof performance and sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and more specifically, it relates to a terminal block for injection-molded main terminals. Background Technology

[0002] In modern electrical equipment such as smart converged terminals or smart distribution terminals, terminal blocks are key components for achieving electrical connections, and their performance directly affects the operational stability and safety of the entire equipment.

[0003] Currently, most injection-molded main terminal blocks, although the terminal blocks and their housings are molded using a one-piece injection molding process,

[0004] In actual use, due to changes in ambient temperature, the terminals and housing inevitably undergo thermal expansion and contraction. This expansion and contraction can create gaps between the terminals and the housing. When water enters the portion of the terminal block located on the outside of the equipment housing, it can easily seep through these gaps into the inside of the housing, damaging the internal electrical components, affecting the normal operation of the equipment, and even causing safety accidents. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a terminal block for injection-molded main terminals that improves waterproof and sealing performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A terminal block for injection-molded main terminals includes a housing and terminal blocks.

[0008] The terminal block has an annular groove, and a sealing ring is installed inside the groove.

[0009] The outer wall of the sealing ring is fixed to the inner wall of the annular groove.

[0010] The sealing rings include a first waterproof ring, a second waterproof ring, and a third waterproof ring.

[0011] The second waterproof ring is fixedly connected between the first and third waterproof rings.

[0012] The first waterproof ring is provided with a first extension ring and a second extension ring, both of which are fixed around the outer wall of the first waterproof ring.

[0013] A groove is provided on the outer wall of the first waterproof ring, and the groove is located between the first extension ring and the second extension ring.

[0014] The second waterproof ring is provided with a first outer ring, a second outer ring, and a connecting block.

[0015] Both the first outer ring and the second outer ring are fixed around the outer wall of the first waterproof ring.

[0016] The connecting block is placed between the first outer ring and the second outer ring.

[0017] The inner wall of the connecting block is fixed to the outer wall of the second waterproof ring, and the two ends of the connecting block are respectively fixed to the first outer ring and the second outer ring. There are several connecting blocks arranged around the center of the second waterproof ring.

[0018] The present invention is further configured such that: a fixing ring is provided on the third waterproof ring, the fixing ring is sleeved on the outer wall of the third waterproof ring and fixed to the third waterproof ring.

[0019] The present invention is further configured such that there is a gap between the first outer ring, the second outer ring and the connecting block.

[0020] The present invention is further configured such that the diameters of the first extension ring, the second extension ring, the first outer ring, the second outer ring, and the fixing ring are all larger than the diameter of the first waterproof ring.

[0021] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0022] By creating annular grooves and installing sealing rings on the terminals, gaps caused by thermal expansion and contraction between the terminals and the housing can be filled, effectively preventing water from entering the inside of the equipment housing, protecting the internal electrical components, and thus improving waterproofing and sealing performance.

[0023] Because the sealing ring has a multi-layer structure, through the first waterproof ring, the second waterproof ring and the third waterproof ring, it can better adapt to the thermal expansion and contraction changes of the terminal block and the housing, further improving the sealing effect and extending the service life of the terminal block. Attached Figure Description

[0024] Figure 1 This is an exploded view of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the sealing ring of this utility model.

[0026] 1. Housing; 2. Terminal block; 3. Annular groove; 4. Sealing ring; 5. First extension ring; 6. Second extension ring; 7. Groove; 8. First outer ring; 9. Second outer ring; 10. Connecting block; 11. Fixing ring; 12. Gap; 401. First waterproof ring; 402. Second waterproof ring; 403. Detailed Implementation

[0027] 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.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0029] like Figures 1 to 2 As shown, the injection-molded main terminal block includes a housing 1 and a terminal 2. The terminal 2 has an annular groove 3, and a sealing ring 4 is inside the annular groove 3. The sealing ring 4 is fixed to the annular groove 3. By setting the annular groove 3 and the sealing ring 4, the gap 12 that may be caused by thermal expansion and contraction between the terminal 2 and the housing 1 can be effectively filled, thereby enhancing the sealing effect.

[0030] The sealing ring 4 includes a first waterproof ring 401, a second waterproof ring 402, and a third waterproof ring 403. The second waterproof ring 402 is fixed between the first waterproof ring 401 and the third waterproof ring 403. This multi-layer structure design further improves the sealing performance and adaptability of the sealing ring 4.

[0031] The first waterproof ring 401 has a first extension ring 5 and a second extension ring 6. The first extension ring 5 and the second extension ring 6 are both fitted onto the outer wall of the first waterproof ring 401 and are fixed to the first waterproof ring 401.

[0032] A groove 7 is provided on the outer wall of the first waterproof ring 401. The groove 7 is located between the first extension ring 5 and the second extension ring 6. The first extension ring 5 and the second extension ring 6 can increase the contact area between the first waterproof ring 401 and the surrounding structure, thereby improving the reliability of the seal. The design of the groove 7 can also buffer the stress generated by thermal expansion and contraction to a certain extent, thus preventing the sealing ring 4 from being damaged due to stress concentration.

[0033] The second waterproof ring 402 has a first outer ring 8, a second outer ring 9, and a connecting block 10. The first outer ring 8 and the second outer ring 9 are both fixed around the first waterproof ring 401. The connecting block 10 is between the first outer ring 8 and the second outer ring 9. The inner wall of the connecting block 10 is fixed to the outer wall of the second waterproof ring 402. Both ends of the connecting block 10 are fixed to the first outer ring 8 and the second outer ring 9, respectively. There are several connecting blocks 10, which are arranged around the center of the second waterproof ring 402.

[0034] There is a gap 12 between the first outer ring 8, the second outer ring 9 and the connecting block 10. This gap 12 structure gives the second waterproof ring 402 a certain elastic deformation ability, which can better adapt to the thermal expansion and contraction changes of the terminal 2 and the housing 1, and always maintain a good sealing state.

[0035] The third waterproof ring 403 has a fixing ring 11. The fixing ring 11 is fitted onto the outer wall of the third waterproof ring 403 and fixed to the third waterproof ring 403. The fixing ring 11 can enhance the structural stability of the third waterproof ring 403, and also help to improve the connection strength between the sealing ring 4 and the ring groove 3.

[0036] The diameters of the first extension ring 5, the second extension ring 6, the first outer ring 8, the second outer ring 9, and the fixing ring 11 are all larger than the diameter of the first waterproof ring 401, forming multiple sealing lines to effectively prevent water from entering.

[0037] In practical use, when water enters the outer part of the housing 1 of the smart converged terminal or the smart terminal of the distribution area, the multi-layer sealing structure and good elastic deformation ability of the sealing ring 4 can effectively prevent water from entering the gap 12 between the terminal 2 and the housing 1, thereby preventing water from entering the inner side of the equipment housing 1 and ensuring the normal operation of the equipment.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A terminal block for injection-molded main terminals, comprising a housing (1) and terminal blocks (2), characterized in that, The terminal block (2) has an annular groove (3) and a sealing ring (4) is provided inside the annular groove (3). The outer wall of the sealing ring (4) is fixed to the inner wall of the annular groove (3). The sealing ring (4) includes a first waterproof ring (401), a second waterproof ring (402) and a third waterproof ring (403). The second waterproof ring (402) is fixedly connected between the first waterproof ring (401) and the third waterproof ring (403). The first waterproof ring (401) is provided with a first extension ring (5) and a second extension ring (6), both of which are fixed around the outer wall of the first waterproof ring (401). A groove (7) is provided on the outer wall of the first waterproof ring (401), and the groove (7) is located between the first extension ring (5) and the second extension ring (6). The second waterproof ring (402) is provided with a first outer ring (8), a second outer ring (9) and a connecting block (10). The first outer ring (8) and the second outer ring (9) are both fixed around the outer wall of the first waterproof ring (401). The connecting block (10) is positioned between the first outer ring (8) and the second outer ring (9). The inner wall of the connecting block (10) is fixed to the outer wall of the second waterproof ring (402). The two ends of the connecting block (10) are respectively fixed to the first outer ring (8) and the second outer ring (9). The connecting block (10) has a number of rings and is arranged around the center of the second waterproof ring (402).

2. The terminal block for injection-molded main terminals according to claim 1, characterized in that, The third waterproof ring (403) is provided with a fixing ring (11), which is fitted onto the outer wall of the third waterproof ring (403) and fixed to the third waterproof ring (403).

3. The terminal block for injection-molded main terminals according to claim 1, characterized in that, There is a gap (12) between the first outer ring (8), the second outer ring (9) and the connecting block (10).

4. The terminal block for injection-molded main terminals according to claim 2, characterized in that, The diameters of the first extension ring (5), the second extension ring (6), the first outer ring (8), the second outer ring (9), and the fixing ring (11) are all larger than the diameter of the first waterproof ring (401).

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