CN216698062U - A new type of transformer skeleton that can be fitted with fuses - Google Patents

Abstract

The utility model discloses a novel transformer framework capable of containing fuses, which comprises a double-pit rubber core, wherein a middle wall, a primary wall and a secondary wall are formed on the upper side and the lower side of the middle wall, a primary winding pit for winding a primary copper wire winding is formed between the primary wall and the middle wall, a secondary winding pit for winding a secondary copper wire winding is formed between the secondary wall and the middle wall, a mounting hole for mounting fuses is formed in the double-pit rubber core, the mounting hole is positioned on one side of the primary wall, a rubber sleeve is arranged on the double-pit rubber core, and the rubber sleeve also covers the primary winding to wrap the primary copper wire winding wound in the primary winding pit; and the rubber sleeve also covers the mounting hole. The utility model simplifies the assembly steps of the whole transformer framework, improves the production efficiency, is convenient for automatic production and has strong market competitiveness.

Description

A new type of transformer skeleton that can be fitted with fuses

Technical field:

The utility model relates to the technical field of transformers, in particular to a novel transformer skeleton which can be fitted with a fuse.

Background technique:

Transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary copper wire winding, the secondary copper wire winding and the iron core (magnetic core). The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage regulation (magnetic saturation transformer), etc. According to the purpose, it can be divided into: power transformers and special transformers (electric furnace transformers, rectifier transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers , reactors, transformers, etc.).

With the increase of labor costs, intelligent manufacturing is on the horizon! The traditional transformer manufacturing process is relatively complicated, and there are the following obstacles to the realization of automatic production: 1. In order to meet the requirements of the safe creepage distance between the fuse feet and the primary winding, the fuses need to be insulated and processed. The fuses after insulation processing are placed in In the middle of the primary winding or the surface of the primary winding, it needs to be fixed with insulating tape; 2. It is necessary to stick insulating tape on the middle wall and primary wall of the primary winding pit to meet the requirements between the primary winding and the secondary winding and the silicon steel sheet. safe creepage distance. This leads to cumbersome production and low efficiency.

In view of this, the inventors propose the following optimization scheme.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a new type of transformer skeleton which can be equipped with a fuse.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the novel transformer skeleton of which fuses can be installed includes a double-pit plastic core, and the double-pit plastic core is formed with a middle wall and primary walls located on the upper and lower sides of the middle wall. and a secondary wall, a primary winding pit for winding the primary copper wire winding is formed between the primary wall and the middle wall, and a secondary winding for winding the secondary copper wire is formed between the secondary wall and the middle wall A winding pit; the double-pit rubber core is provided with a mounting hole for installing a fuse, the mounting hole is located on one side of the primary wall, and a rubber sleeve is provided on the double-pit rubber core, and the rubber sleeve also covers the primary winding The wire pit wraps the primary copper wire winding wound in the primary winding pit, and the rubber sleeve also covers the mounting hole.

Further, in the above technical solution, the outer periphery of the middle wall is provided with an occlusal groove, the inner side of the rubber sleeve is formed with a flange with the occlusion groove, and the rear side of the flange is formed with an occlusal barb, the rubber sleeve is formed. Sleeve back along the occlusal groove of the middle wall of the double-pit rubber core, the occlusal barb slides along the occlusal groove to the rear end of the middle wall and is fastened and positioned with the rear end of the occlusal groove, and the flange is inserted into the occlusal groove Inside.

Further, in the above technical solution, both sides of the primary wall are provided with clips; the rubber sleeve is provided with a slot adapted to the clip, and the clip fits into the slot.

Further, in the above technical solution, the double-pit rubber core is provided with an installation position which penetrates through the upper and lower end faces and is used for loading silicon steel sheets, and the installation hole is located beside the installation position.

Further, in the above technical solution, the double-pit rubber core is further provided with two first installation grooves for inserting the primary pins, and the first installation grooves are located beside the installation holes.

Further, in the above technical solution, the lower end surface of the double-pit plastic core is formed with a fixed undercut for inserting and fixing with the PCB board.

Further, in the above technical solution, the primary wall and the secondary wall are respectively provided with a plurality of primary outlet slots and secondary outlet slots for the wire ends of the primary copper wire winding and the secondary copper wire winding to pass through. The bottoms of the slot and the secondary outlet slot extend to the bottoms of the primary winding pit and the secondary winding pit, respectively.

After adopting the above-mentioned technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model adds a rubber sleeve to the double pit rubber core, and the rubber sleeve wraps the primary copper wire wound in the primary winding pit In this way, the silicon steel sheet is separated from the primary copper wire winding, and there is no need to wrap insulating tape around the primary copper wire winding. There is no need to stick insulating tape on the middle wall and primary wall of the primary winding pit, and it can also meet the safety creepage distance between the primary copper wire winding and the secondary copper wire winding, and saves the step of sticking insulating tape. In addition, the utility model has added a mounting hole on the double-pit plastic core, and the fuse can be directly loaded into this mounting hole, eliminating the need to use insulating tape to fix these steps when carrying out insulation processing and placing to the fuse; Therefore, The utility model simplifies the assembly steps of the entire transformer skeleton, improves the production efficiency, and facilitates automatic production, so that the utility model has extremely strong market competitiveness.

Description of drawings:

Fig. 1 is the perspective view of double pit rubber core in the present utility model;

Fig. 2 is a perspective view of the double-pit plastic core in the present utility model from another perspective;

Fig. 3 is the left side view of double pit rubber core in the present utility model;

Fig. 4 is the perspective view of the rubber sleeve in the present utility model;

Fig. 5 is the front view of the rubber sleeve in the utility model;

Figure 6 is a perspective view of the present invention.

Detailed ways:

The present utility model will be further described below with reference to specific embodiments and accompanying drawings.

As shown in Figures 1-6, it is a new type of transformer skeleton that can be installed with fuses, which includes a double-pit rubber core 1, and the double-pit rubber core 1 is formed with a middle wall 11 and primary walls located on the upper and lower sides of the middle wall 11. 12 and a secondary wall 13, a primary winding pit 14 for winding the primary copper wire winding is formed between the primary wall 12 and the middle wall 11, and a secondary wall 13 and the middle wall 11 are formed between the secondary wall 13 and the middle wall 11. The secondary winding pit 15 of the secondary copper wire winding; the double pit rubber core 1 is provided with a mounting hole 122 for installing a fuse, the mounting hole 122 is located on the side of the primary wall 12, and the double pit rubber core 1 is provided with There is a rubber sleeve 2 , which also covers the primary winding pit 14 to wrap the primary copper wire winding wound in the primary winding pit 14 , and also covers the mounting hole 122 . The utility model adds a rubber sleeve 2 to the double-pit rubber core 1, and the rubber sleeve 2 wraps the primary copper wire winding wound in the primary winding pit 14, so as to separate the silicon steel sheet from the primary copper wire winding, It is also not necessary to wrap insulating tape around the primary copper wire winding; at the same time, the creepage distance of the primary copper wire winding and the secondary copper wire winding can be increased, so that there is no need to stick on the middle wall and the primary wall of the primary winding pit The insulating tape can also meet the safety creepage distance between the primary copper wire winding and the secondary copper wire winding, and saves the step of sticking the insulating tape; The installation hole 122, the fuse can be directly installed in the installation hole 122, and the steps of insulating the fuse and fixing with insulating tape when placing it are omitted; therefore, the utility model simplifies the assembly steps of the entire transformer skeleton, improves The production efficiency is improved, and the automatic production is convenient, so that the utility model has strong market competitiveness.

The outer periphery of the middle wall 11 is provided with an engaging groove 111, the inner side of the rubber sleeve 2 is formed with a flange 20 which is formed with the engaging groove 111, and the rear side of the flange 20 is formed with an engaging barb 21. The occlusal barb 21 slides along the occlusal groove 111 to the rear end of the middle wall 11 and is locked and positioned with the rear end of the occlusal groove 111. The edge 20 is embedded in the engaging groove 111 .

Both sides of the primary wall 12 are provided with clips 120 ; the rubber sleeve 2 is provided with a clip slot 22 adapted to the clip 120 , and the clip 120 is inserted into the clip slot 22 .

The double-pit rubber core 1 is provided with an installation position 10 that runs through the upper and lower end faces and is used to load silicon steel sheets. The installation hole 122 is located beside the installation position 10, so that the fuse installed in the installation hole 122 can be close to the installation position 10. On the one hand, the upper surface of the fuse can feel the temperature from the primary copper wire winding, and the lower surface of the fuse can feel the temperature from the silicon steel sheet.

The double-pit rubber core 1 is also provided with two first installation grooves 123 for inserting primary pins, and the first installation grooves 123 are located beside the installation holes 122 . The primary pin can be directly inserted into the first installation slot 123 for fixing, and connected with the starting and ending copper wires of the primary copper wire winding or the fuse pin stranded wire, which can avoid the traditional practice of using a transition lead to connect the primary pin with the starting point of the primary winding. The complicated process of connecting with the end copper wire or the fuse pin stranded wire also saves labor and materials.

The lower end surface of the double-pit plastic core 1 is formed with a fixed invert 16 for inserting and fixing with the PCB board. During assembly, two snap holes are opened on the PCB board, and the two snap holes of the PCB are aligned with the fixing upside-down buttons 16 of the double-pit rubber core 1 to be fixed, which solves the problem that the traditional PCB board is difficult to fix.

The depth of the outlet slot of the skeleton in the traditional transformer is not opened to the bottom of the winding pit of the skeleton, which will lead to the intersection of the starting copper wire of the same winding and the winding copper wire, so the insulating tape must be pasted at the starting copper wire. In order to solve the crossover problem of the same winding copper wire. In this regard, the utility model has made the following improvements: the primary wall 12 and the secondary wall 13 are respectively provided with a plurality of primary outlet slots 121 and secondary wires for the wire ends of the primary copper wire winding and the secondary copper wire winding to pass through. Outlet slot 131, the bottoms of the primary outlet slot 121 and the secondary outlet slot 131 extend to the bottoms of the primary winding pit 14 and the secondary winding pit 15 respectively, so that the crossover problem of the initial copper wire and the winding copper wire can be solved , omit the insulating tape at the starting copper wire.

To sum up, the present invention adds a rubber sleeve 2 to the double-pit rubber core 1, and the rubber sleeve 2 wraps the primary copper wire winding wound in the primary winding pit 14, so as to connect the silicon steel sheet with the primary copper wire The windings are separated, and there is no need to wrap insulating tape around the primary copper wire winding; at the same time, the creepage distance of the primary copper wire winding and the secondary copper wire winding can be increased, so that the middle wall of the primary winding pit is not required. Sticking insulating tape on the primary wall can also meet the safety creepage distance between the primary copper wire winding and the secondary copper wire winding, and saves the step of sticking insulating tape; A mounting hole 122 is added on the 1, and the fuse can be directly installed in this mounting hole 122, which saves the steps of insulating the fuse and fixing with insulating tape when placing it; therefore, the utility model simplifies the entire transformer skeleton. The assembling steps are improved, the production efficiency is improved, and the automatic production is convenient, so that the utility model has strong market competitiveness.

Of course, the above are only specific embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made in accordance with the structures, features and principles described in the scope of the patent application of the present invention are not intended to limit the scope of the present invention. It should be included in the scope of the patent application of this utility model.

Claims (7)

1. A novel transformer skeleton capable of installing a fuse, comprising a double-pit plastic core (1), and the double-pit plastic core (1) is formed with a middle wall (11) and a primary located on the upper and lower sides of the middle wall (11). A wall (12) and a secondary wall (13), a primary winding pit (14) for winding the primary copper wire winding is formed between the primary wall (12) and the middle wall (11), the secondary wall (13) ) and the middle wall (11), a secondary winding pit (15) for winding the secondary copper wire winding is formed, It is characterized in that: the double-pit plastic core (1) is provided with a mounting hole (122) for installing a fuse, and the mounting hole (122) is located on one side of the primary wall (12); the double-pit plastic core (1) A rubber sleeve (2) is provided on it, and the rubber sleeve (2) also covers the primary winding pit (14) to wrap the primary copper wire winding wound in the primary winding pit (14); and the rubber sleeve ( 2) Also cover the mounting holes (122). 2. A novel transformer skeleton capable of installing a fuse according to claim 1, characterized in that: an engaging groove (111) is provided on the periphery of the middle wall (11), and the inner side of the rubber sleeve (2) is formed with a The flange (20) of the bite groove (111), and the rear side of the flange (20) is formed with bite barbs (21), and the rubber sleeve (2) is along the middle wall ( 11) the occlusal groove (111) is sleeved backward, the occlusal barb (21) slides along the occlusal groove (111) to the rear end of the middle wall (11) and is fastened and positioned with the rear end of the occlusal groove (111) , and the flange (20) is embedded in the engaging groove (111). 3. The novel transformer skeleton capable of installing a fuse according to claim 2, characterized in that: snaps (120) are provided on both sides of the primary wall (12); A card slot (22) adapted to the clip (120) is provided, and the clip (120) is inserted into the card slot (22). 4. The novel transformer skeleton capable of installing a fuse according to any one of claims 1-3, wherein the double-pit plastic core (1) is provided with a mounting position that penetrates through the upper and lower end faces and is used to load silicon steel sheets (10), the mounting hole (122) is located beside the mounting position (10). 5. a kind of novel transformer skeleton that can be fitted with fuses according to claim 4, is characterized in that: described double pit rubber core (1) is also provided with two first installation grooves (1) for inserting primary pins. 123), the first installation groove (123) is located beside the installation hole (122). 6. The novel transformer skeleton capable of installing a fuse according to any one of claims 1-3, characterized in that: the lower end face of the double-pit plastic core (1) is formed with a fixing device for inserting and fixing with a PCB board. Invert (16). 7. The novel transformer skeleton capable of installing a fuse according to any one of claims 1-3, characterized in that: the primary wall (12) and the secondary wall (13) are respectively provided with a plurality of primary copper The primary outlet slot (121) and the secondary outlet slot (131) through which the wire ends of the wire winding and the secondary copper wire winding pass, the bottoms of the primary outlet slot (121) and the secondary outlet slot (131) respectively extend to the primary winding Bottom of wire pit (14) and secondary winding pit (15).

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