Detachable transformer

Abstract

The detachable transformer comprises a framework and a through hole, protruding parts are arranged on the left side and the right side of the upper end of the framework respectively, wire passing grooves are formed in the protruding parts, grooves are formed below the wire passing grooves, a supporting plate is arranged below the grooves, iron cores are arranged around the framework, the iron cores are the combination of E-shaped iron cores and I-shaped iron cores, and middle columns of the E-shaped iron cores penetrate through the through hole. According to the utility model, the structure is ingenious and reasonable, the protruding part and the wire passing groove are arranged, and the supporting plate is matched with the groove, so that the structural strength is high and stable, and the disassembly is convenient.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and more specifically, to a detachable transformer. Background Technology

[0002] In some transformers, to prevent overheating caused by erroneous operation or abnormal working conditions, a thermal fuse is usually placed in series within the first winding. When the winding reaches a certain temperature, the fuse melts and disconnects the first circuit, providing protection. However, in current transformer manufacturing processes, the fuse is placed inside the winding and directly connected in series with it. Once the fuse melts, it cannot be replaced, and due to the irreversible nature of a blown fuse, the transformer must be scrapped.

[0003] Chinese Patent Publication No. CN 204066983 U discloses a transformer frame that is easy to install. The problem is that the insulating sleeve is put on the frame body from bottom to top and covers the fuse slot. After the transformer is installed, the fuse cannot be directly removed, and the iron core is inconvenient to install. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a detachable transformer with a clever and reasonable structure. It is equipped with a protrusion and a wire passage groove, and the support plate and the groove cooperate to ensure high structural strength and stability, while also facilitating disassembly.

[0005] To achieve the objective of this utility model, the technical solution adopted is as follows:

[0006] A detachable transformer includes a frame with a through hole, a protrusion on each side of the upper end of the frame, a wire passage groove on each protrusion, a groove below the wire passage groove, and a support plate below the groove.

[0007] As a further improvement of this utility model, an iron core is provided around the frame. The iron core is a combination of an E-shaped iron core and an I-shaped iron core, with the central column of the E-shaped iron core passing through a through hole.

[0008] As a further improvement of this utility model, the protrusion is U-shaped.

[0009] As a further improvement of this utility model, the skeleton is provided with a platform below the protrusion.

[0010] As a further improvement of this utility model, it also includes a protective sleeve, which is U-shaped and its inner side is adapted to the skeleton, covering the front end, rear end and bottom surface of the skeleton.

[0011] As a further improvement of this utility model, the fuse is placed in the groove, and the fuse pins pass through the wire groove.

[0012] As a further improvement of the utility model, the framework is provided with a first coil groove and a second coil groove.

[0013] As a further improvement of the utility model, a baffle is arranged between the first coil groove and the second coil groove, and a partition groove is arranged outside the baffle.

[0014] As a further improvement of the utility model, a plurality of recesses are arranged inside the protruding part.

[0015] As a further improvement of the utility model, a plurality of pins are arranged on the protruding part.

[0016] The utility model has the advantages of:

[0017] The detachable transformer of the utility model is provided with a protruding part and a wire passing groove, and is matched by a supporting plate and a groove, thereby ensuring high structural strength, stability, convenient disassembly and material saving. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects and advantages of the utility model will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0019] Fig. 1 It is a perspective view of the utility model.

[0020] Fig. 2 It is a structural exploded view of the utility model.

[0021] Fig. 3 It is a left view of the utility model.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1 framework, 11 supporting plate, 12 baffle, 13 groove, 14 platform, 15 pin, 16 first coil groove, 17 second coil groove, 18 partition groove, 2 protruding part, 21 wire passing groove, 22 recess, 3 fuse, 31 fuse leg, 4 through hole, 5 iron core, 6 sheath. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] As Figs. 1 to 3As shown, the embodiment provides a detachable transformer, which includes a framework 1, a through hole 4 penetrating the left and right sides of the framework 1, a protruding part 2 provided on the upper end of the framework 1, the protruding part 2 being a trapezoidal body with a narrow bottom, the inner side being a long side, and being rectangular from the upper side, the lower end of the protruding part 2 being transitioned from the outer side to the inner side through a slope, and a platform 14 being provided below to support the protruding part 2, the platform being provided as a triangular body and being triangular from the side, the bottom being consistent with the bottom of the protruding part 2 in size and shape, or being wider or longer than the protruding part 2 to support the protruding part 2 and strengthen the stability of the structure. The upper end of the protruding part 2 is protruded upward to be flat U-shaped, and a plurality of pins 15 are provided in the middle, the pins 15 being cylindrical bodies, the roots of the pins 15 being convenient for wire winding, and the material of the pins 15 being a good conductor, such as copper, aluminum, iron, etc. Preferably, the pins 15 are uniformly distributed to occupy the upper end of the protruding part 2 with a gap left between adjacent pins 15, and the length of the pins 15 exceeds that of the protruding part 2. Subsequently, there is sufficient space for connecting external wires, connecting fuse pins 31, connecting PCB boards, connecting coil wires, etc., and the wiring can be more flexible.

[0026] The platform 14 is provided as a triangular body and is transitioned through a slope below to leave a gap, and the size of the gap between the platform 14 and the slot 13 below can be increased or decreased by changing the angle of inclination. Preferably, the angle of inclination can be between 40° and 50°, such as 44°, 45°, 46°, etc. In this way, after the transformer and the fuse 3 are installed, the slot 13 is still connected to the outside and is not directly blocked by the platform 14 or blocked from view, and the structure is compact, the bottom of the platform 14 can be close to the slot 13, the cost is reduced, and the overall volume of the transformer is reduced. If a gap is left between the platform 14 and the slot 13 when the product is manufactured, the platform 14 can also be provided as a cuboid, or the thickness of the platform can be increased to achieve the effect of enhancing the stability of the structure.

[0027] In addition, a groove 22 is further provided between every two pins 15 to avoid conduction between adjacent pins 15, the groove 22 being a recessed part from the upper side of the through hole 4 to the upper side of the protruding part 2, and being triangular from the side, the bottom of the triangular body being located on the upper side of the protruding part 2 and not penetrating the protruding part 2. If the groove 22 completely penetrates the protruding part 2 to form a rectangular cavity between the pins, conduction between adjacent pins 15 can also be avoided, but the stability of the structure of the protruding part 2 will be reduced, and the risk of deformation will be higher if shaking or impact is encountered. Fig. 2 As shown, a part is obliquely excavated to form a groove 22, which can ensure the distance between adjacent pins 15 to be sufficient for insulation while ensuring the stability of the structure. The angle of inclination of the slope should meet the insulation between adjacent pins 15, and the bottom of the groove 22 should not exceed the upper edge of the through hole 4.

[0028] The protruding part 2 is provided with a clamping groove between the left and right ends and the framework 1, and a plurality of wire passing grooves 21 are provided on the protruding part 2, which penetrate the protruding part 2 and the upper and lower sides of the platform 14. The wire passing grooves 21 are trapezoidal in side view, with the inner side being the long side. In this way, the fuse pin 31 can be inserted into the wire passing groove, while the slot 13 opening is left as a passage to the outside, facilitating the disassembly and installation of the fuse 3. The upwardly protruding parts on the upper end of the protruding part 2 cooperate with the clamping grooves to enhance the stability of the fixing structure. The adjacent wire passing grooves 21 are separated by a spacer, which is made of insulating material. The insulating material can be inorganic insulating materials such as glass and ceramic, or rubber materials such as silicone rubber and neoprene rubber, or thermoplastic materials such as polyvinyl chloride, polyethylene and polypropylene. The spacer insulates the fuse pin 31 to prevent short circuiting of the fuse pin 31. The fuse pin is made of a good conductor such as copper, aluminum, iron, etc.

[0029] A slot 13 is provided below the wire passing groove 21, and a supporting plate 11 is provided below the slot 13. The slot 13 can be a square slot, a trapezoidal slot, a triangular slot, etc., which extends from the outside of the framework 1 to the corresponding position of the baffle 12. The supporting plate 11 is a rounded trapezoidal shape, protruding outwardly, with the long side abutting the framework 1 and the two sides being rounded. The supporting plate 11 can also be rectangular, semicircular, etc., with the long side and the short side being longer than the slot 13, and the long side being comparable to the length of the through hole 4 or longer. The fuse 3 is placed in the slot 13, and the shape of the fuse 3 matches the slot 13. The supporting plate 11 cooperates with the slot 13 to fix the fuse 3, enhancing the stability of the fuse 3 installation. At the same time, the supporting plate 11 separates the fuse 3 and the iron core 5, increasing the creepage distance between the fuse 3 and the iron core 5, and ensuring the safety of the product. The fuse pin 31 passes through the protruding part 2 from the inner side of the wire passing groove 21 without touching the protruding part 2, and is connected to the pin 15 at the upper end of the protruding part 2. If it is too close to the outside, more fuse pins 31 will be exposed. Fig. 1 As shown in

[0030] In addition, as shown in Fig. 2 The same supporting plate 11 is provided below the through hole 4, which abuts the iron core. The supporting plates 11 on the upper and lower sides of the through hole 4 sandwich the iron core 4, fixing the iron core 4 and preventing it from shaking. The magnetic field generated after electrification is more stable, and changes in the direction and strength of the magnetic field due to movement of the iron core 4 are avoided.

[0031] As shown in Fig. 2As shown, along the top, bottom, front and rear end surface of the skeleton 1 are provided with a first coil groove 16 and a second coil groove 17, the first coil groove 16 and the second coil groove 17 are cuboids, the four corners of the cuboids are respectively transitioned with rounded corners, the wires can be wound into rounded square coils along the structure of the first coil groove 16 and the second coil groove 17, keeping the continuity of winding, and without damaging the paint layer of the wire. The coils of the first coil groove 16 and the coils of the second coil groove 17 transform voltage through electromagnetic induction. A baffle 12 is provided around the through hole between the first coil groove 16 and the second coil groove 17, the height of the baffle is consistent with the main part of the protruding part 2, the width is consistent with the skeleton 1, and the contour shape is a rectangular with rounded corners. A partition groove 18 is provided along the front end, rear end and bottom of the baffle 12, the partition groove 18 is consistent with the baffle 12 in shape, and the depth does not exceed the baffle 12. The baffle 12 is made of insulating material, as an insulating material, inorganic insulating materials such as glass, ceramics, or rubber materials such as silicone rubber and neoprene can be used, and thermoplastic plastics such as polyvinyl chloride, polyethylene and polypropylene can also be used to increase the creepage distance between the coils and ensure the insulation between the coils.

[0032] As shown in the figure, Fig. 2 The core 5 is a combination of E-shaped core and cover core, that is, EI-shaped, the middle part of the E-shaped core passes through the through hole 4, and the periphery wraps the skeleton 1, and the material is a magnetic material. As a magnetic material, various ferrites such as nickel-based ferrite or manganese-based ferrite, permalloy, or various magnetic materials such as iron-aluminum-silicon alloy can be used, and mixtures of various magnetic materials can also be used. The supporting plate 11 is in close contact with the core 5, which separates the core 5 from the fuse 3, increases the creepage distance between the fuse 3 and the core 5, and ensures the safety of the product. Preferably, the through hole 4 has several protrusions, which increases the extrusion force between the core 5 and the skeleton 1 to make the core 5 tightly without looseness.

[0033] The detachable transformer further comprises a sheath 6, which is U-shaped and made of insulating material, and is sleeved on the skeleton 1 from bottom to top, covering the front end surface, rear end surface and bottom surface of the first coil groove 16 and the second coil groove 17, and leaving the side surface and top surface open. The sheath 6 has clamping plates 61 at the middle positions of the two sides and the inner side, which cooperate with the partition grooves 18 on the front end surface, rear end surface and bottom of the baffle 12, and the clamping grooves between the protruding part 2 and the skeleton 1 to fix the sheath 6 on the skeleton 1, and at the same time realize complete separation and sealing of the first coil groove 16 and the second coil groove 17, and stable and reliable insulation effect. The bottom of the sheath 6 has several oil drainage holes, and the bottom of the sheath 2 has several oil drainage holes, through which the excess insulating paint in the coil after the transformer is immersed in the insulating paint is drained, facilitating automatic production.

[0034] In addition, the protruding part 2 is wider than the middle part of the framework 1, a clamping groove is arranged between the protruding part 2 and the framework 1, the sheath 6 is provided with a clamping plate 61, and the sheath 6 is provided with only a front end face, a bottom, and a rear end face, and no structure is arranged on the outer side of the sheath 6, so that the sheath 6 can be smoothly sleeved on the framework 1 or the framework 1 can be inserted into the sheath 6. Through cooperation of the clamping groove and the clamping plate 61, the transformer can be quickly and conveniently assembled, and the separation, sealing and insulation are completed, so that automatic production can be realized. Preferably, the depth of the clamping groove between the protruding part 2 and the framework 1 is consistent with the depth of the separation groove 18 on the baffle 12.

[0035] In the above embodiment, the fuse pin 31 is led out from the wire passing groove 21, is wound at the root of the pin 15, and is electrically connected with the coil. In another embodiment of the utility model, the fuse pin 31 does not produce connection with the pin 15, and a pcb board is additionally arranged, a lead wire is led out from the pcb board, the fuse pin 31 is connected with the lead wire of the pcb board after being led out from the wire passing groove 21, and the pcb board is connected in series with the coil through the circuit on the pcb board. Preferably, a control circuit or an alarm circuit can be drawn on the pcb board, and the transformer operation is intelligently controlled.

[0036] In addition, in the above embodiment, it is explained that the E-shaped iron core and the I-shaped iron core can be used as the iron core 5. However, the iron core used in the utility model is not limited to this. In addition, two E-shaped iron cores or other shape iron cores can also be used.

[0037] In the above embodiment, the protruding part 2 is arranged in an integrated manner with the framework 1, and the protruding part 2 can also be arranged in a separate manner with the framework 1. For example, the protruding part 2 and the framework 1 can be connected and fixed through welding, riveting or arranging fixing holes on the framework 1 and the protruding part 2 respectively and using screws. Since the platform 14 under the framework 1 supports, the separate design can still ensure the stability and firmness of the structure.

[0038] In the above embodiment, the framework 1 is provided with the first coil groove 16 and the second coil groove 17. In another embodiment of the utility model, more coil grooves, such as a third coil groove, a fourth coil groove and the like, can also be arranged, and the number of clamping plates 61 on the sheath 6 is correspondingly increased by arranging the baffle 12 between adjacent coil grooves.

[0039] In addition, in another embodiment of the utility model, two mounting bases are arranged on two sides of the sheath 6, the mounting base comprises a mounting plate and a supporting column supporting the mounting plate, and fixing holes are arranged on the mounting plate. The upper side of the transformer is tightly attached to the circuit board, and the transformer can be mounted on the circuit board of the electrical appliance by penetrating the fixing holes on the mounting plate with screws. The protruding part 2 and the sheath 6 can well separate the transformer from surrounding components, and the sealing and insulation effects are achieved.

[0040] In addition, in another embodiment of the utility model, still include cover, the inside of cover is equipped with the card board, still each is equipped with fixed hole in the both sides of sheath 6, fixed hole can be rectangular, triangular, circular etc any shape or its combination. Cover is inverted U plane, cover is equipped with fixed column with fixed hole corresponding shape, still be equipped with the card slot in the top of baffle 12. Cover covers the top of framework 1, the top of first coil groove 16 and second coil groove 17 is covered and closed, realizes sealing, the card board of cover inside and the card slot of baffle 12 cooperation, fixed column and fixed hole cooperation, make cover fixed no loose. Thus, sheath 6 and cover sleeve cover the top of framework, front end surface, rear end surface, bottom, close up first coil groove 16 and second coil groove 17.

[0041] The utility model discloses its structure is ingenious and reasonable, and the structural strength is high, and the projection of framework 1 is equipped with the cooperation of wire groove 21, and groove 13 cooperates with the support plate 11, namely plays good protection function, and also makes fuse 3 convenient to disassemble, and also set up sheath 6, namely plays good protection, insulation effect, and also convenient to assemble, is suitable for automatic production. EI -shaped core is assembled conveniently, firm, and the stability is high, and is convenient to disassemble.

[0042] The above only is the preferred embodiment of the utility model, and all equal changes and modifications made in the range of the utility model claim should belong to the coverage range of the utility model claim.

Claims

1. A detachable transformer comprising a framework, a through hole, characterized in that, the framework (1) is provided with a protruding part (2) on the left and right sides of the upper end, the protruding part (2) is provided with a wire passing groove (21); the framework (1) is provided with a groove (13) below the wire passing groove (21), and a supporting plate (11) is arranged below the groove (13).

2. The detachable transformer of claim 1, wherein, An iron core (5) is arranged around the framework (1), the iron core (5) is a combination of an E-shaped iron core and an I-shaped iron core, and the middle column of the E-shaped iron core passes through the through hole (4).

3. The detachable transformer of claim 1, wherein, The protruding part (2) is a trapezoidal body with a narrow bottom.

4. The detachable transformer of claim 1, wherein, Further comprising a sheath (6), the sheath (6) is U-shaped, and is sleeved on the framework (1) from bottom to top, covering the front end face, the rear end face and the bottom face of the first coil groove (16) and the second coil groove (17).

5. The detachable transformer according to claim 1 or 2 or 3 or 4, wherein, The framework (1) is provided with a platform (14) below the protruding part (2).

6. The detachable transformer according to claim 1 or 2 or 3 or 4, wherein, The fuse (3) is arranged in the groove (13), and the fuse leg (31) passes out of the wire passing groove (21).

7. The detachable transformer of claim 1 or 2 or 3 or 4, wherein, The framework (1) is provided with a first coil groove (16) and a second coil groove (17).

8. The detachable transformer of claim 7, wherein, A baffle (12) is arranged between the first coil groove (16) and the second coil groove (17), and a separation groove (18) is arranged on the outer side of the baffle (12).

9. The detachable transformer of claim 1 or 2 or 3 or 4, wherein, The protruding part (2) is provided with a plurality of grooves (22) on the inner side.

10. The detachable transformer of claim 1 or 2 or 3 or 4, wherein, The protruding part (2) is provided with a plurality of insertion pins (15).

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