Electronic transformer with sleeve and magnetic core gum removed
By removing the casing and magnetic core back glue, using a combination of film wrapping and insertion isolating sheets, the problem of low production efficiency of existing electronic transformers is solved, efficient insulation performance is achieved, and production process is simplified, and mass production is facilitated.
Patent Information
- Application Number
- CN202420510249.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-16
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-16
AI Technical Summary
When existing high-frequency electronic transformers increase the insulation of primary and secondary coils, the production efficiency of using sleeves and core backing adhesives is inefficient, which increases labor costs, and when trying to improve production efficiency, the wire frame needs to be redesigned or customized. cumbersome operation and difficult to mass production.
Design an electronic transformer that removes casing and core back glue, uses film wrapping to wrap the secondary wire group, and uses plug-in isolation sheet to replace the traditional core back glue, and sets PIN pins on the bottom side of the wire frame for electrical properties. Connect and set the magnetic core in the line frame clearance to ensure insulation performance.
It achieves better insulation effect, avoids voltage breakdown, simplifies the production process, improves production efficiency, facilitates mass production, and does not require redesign of the wire frame.
Smart Images
Figure CN222213897U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electronic transformer design, in particular to an electronic transformer with a sleeve and a magnetic core back glue removed. Background Art
[0002] In existing high-frequency electronic transformers, such as Figure 6 and Figure 7 As shown, in order to strengthen the insulation between the primary coil 11 and the secondary coil 12, a sleeve 13 is sleeved on the end of the coil 9, and then a core adhesive 10 is arranged on the magnetic core 2. The core adhesive 10 is located between the primary coil 11 and the secondary coil 12, thereby increasing the safety distance from the primary to the secondary of the transformer product, ensuring that the primary and secondary of the transformer are completely insulated and can pass the withstand voltage test. The setting of the sleeve 13 can prevent the insulating paint on the outside of the copper wire from being burned during tinning, thereby avoiding the occurrence of short circuit in the electronic transformer.
[0003] However, the above-mentioned solution of adding the sleeve 13 and the core adhesive 10 has extremely low production efficiency, which seriously increases the labor production cost. In order to improve the production efficiency of this type of electronic transformer, it is necessary to design an electronic transformer that removes the sleeve 13 and the core adhesive 10 to solve the above-mentioned problem.
[0004] The prior art (Announcement No.: CN209804405U, Announcement Date: 2019.12.17) discloses a power-enhanced electronic transformer, which uses a wire rack secondary widening production technology to meet higher safety requirements without adding insulating sleeves. However, in this solution, conventional wire racks can no longer be used. The wire racks need to be redesigned or customized according to the model of the electronic transformer, which is very cumbersome to operate and difficult to mass produce. Utility Model Content
[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.
[0006] An electronic transformer with a sleeve and a magnetic core adhesive removed, comprising a wire rack, a magnetic core, a primary wire group and a secondary wire group, wherein the bottom side of the wire rack is inlaid with 7 PIN pins arranged in Arabic numerals, the primary wire group is electrically connected to the PIN pins numbered 1-5, and the secondary wire group is electrically connected to the PIN pins numbered 6-7;
[0007] The secondary wire group is wound with film-wrapped wire, and an insertable isolation sheet is provided on the bottom side of the wire rack. The insertable isolation sheet is located on one side of the PIN pins numbered 6-7.
[0008] Furthermore: two magnetic cores are provided, the wire rack is installed between the two magnetic cores with a gap fit, and the side of the inserted isolation sheet is plug-fitted and fixed in the fitting gap between the wire rack and the magnetic core.
[0009] Further: the PIN pins numbered 1-5 are arranged on one side of the wire rack, and the PIN pins numbered 6-7 are arranged on the other side of the wire rack.
[0010] Further: the primary winding group includes an N1 winding, an N2 winding, an N4 winding and an N5 winding, the two ends of the N1 winding are electrically connected to the PIN pins of sequence number 4 and sequence number 3, respectively, the two ends of the N2 winding are electrically connected to the PIN pins of sequence number 2 and sequence number 1, respectively, one end of the N4 winding is electrically connected to the PIN pin of sequence number 1, a normally closed end is provided on the wire rack, the other end of the N4 winding is connected to the normally closed end of the wire rack, and the two ends of the N5 winding are electrically connected to the PIN pins of sequence number 3 and sequence number 5, respectively.
[0011] Further: the number of windings of the N1 winding on the bobbin is 25TS, the number of windings of the N2 winding on the bobbin is 7TS, the number of windings of the N4 winding on the bobbin is 5TS, and the number of windings of the N5 winding on the bobbin is 20TS.
[0012] Further: the secondary line group includes an N3 winding, and two ends of the N3 winding are electrically connected to the PIN pins numbered 6 and 7 respectively.
[0013] Furthermore: the number of winding turns of the N3 winding is 5TS.
[0014] Furthermore: the outer sides of the N1 winding, the N2 winding, the N3 winding, the N4 winding and the N5 winding are all covered with insulating tape.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The secondary wire group is wound using film-wrapped wire. Compared with traditional enameled wire, film-wrapped wire has better insulation effect. At the same time, the traditional magnetic core adhesive is replaced by an inserted isolation sheet. The combination of film-wrapped wire and the inserted isolation sheet can effectively prevent voltage breakdown. Compared with traditional electronic transformers, it has the same insulation effect and can stably pass the withstand voltage test;
[0017] 2. There is no need to set up sleeves and core adhesive, which is easy to manufacture and has high production efficiency. At the same time, the wire rack can be used for winding, and there is no need to redesign or customize the wire rack, which is convenient for mass production.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0020] Figure 1 It is a main structural schematic diagram of the utility model;
[0021] Figure 2 It is a side view structural schematic diagram of the utility model;
[0022] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above;
[0023] Figure 4 It is the working principle diagram of the primary line group and the secondary line group of the utility model;
[0024] Figure 5 It is a schematic diagram of the winding structure of the primary wire group and the secondary wire group of the utility model;
[0025] Figure 6 It is a schematic diagram of the main structure of the same type of product in the prior art;
[0026] Figure 7 It is a side view structural schematic diagram of the same type of product in the prior art.
[0027] As shown in the figure: 1. bobbin; 2. magnetic core; 3. primary wire group; 31. N1 winding; 32. N2 winding; 33. N4 winding; 34. N5 winding; 4. secondary wire group; 41. N3 winding; 5. PIN pin; 6. plug-in isolation plate; 7. normally closed terminal; 8. insulating tape; 9. coil; 10. magnetic core backing glue; 11. primary coil; 12. secondary coil; 13. sleeve. DETAILED DESCRIPTION
[0028] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.
[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.
[0030] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.
[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] like Figure 1-5 As shown, the utility model is an electronic transformer with the sleeve and the back glue of the magnetic core 2 removed, comprising a wire rack 1, a magnetic core 2, a primary wire group 3 and a secondary wire group 4, wherein the bottom side of the wire rack 1 is inlaid with 7 PIN pins 5 arranged in Arabic numerals, the primary wire group 3 is electrically connected to the PIN pins 5 numbered 1-5, and the secondary wire group 4 is electrically connected to the PIN pins 5 numbered 6-7;
[0034] The secondary wire group 4 is wound with film-wrapped wire, and an insertable spacer 6 is provided on the bottom side of the wire rack 1. The insertable spacer 6 is located on one side of the PIN pin 5 with serial number 6-7;
[0035] The principle is: the secondary wire group 4 is wound by using film-wrapped wire. Compared with the traditional enameled wire, the film-wrapped wire has better insulation effect. At the same time, the traditional magnetic core adhesive is replaced by the inserted isolation sheet 6. The cooperation of the film-wrapped wire and the inserted isolation sheet 6 can effectively prevent voltage breakdown. Compared with the traditional electronic transformer, it has the same insulation effect and can stably pass the withstand voltage test. Compared with the prior art, the utility model does not need to set the casing and the magnetic core adhesive, and has the characteristics of easy manufacture and high production efficiency. At the same time, the wire rack 1 can be used for winding, and there is no need to redesign or customize the wire rack, which is convenient for mass production.
[0036] Furthermore: two magnetic cores 2 are provided, the wire rack 1 is installed between the two magnetic cores 2 with a gap fit, and the side of the inserted isolation plate 6 is plug-fitted and fixed in the fitting gap between the wire rack 1 and the magnetic core 2; it can facilitate the installation operation of the inserted isolation plate 6, while ensuring the insulation performance and the production efficiency.
[0037] Further: the PIN pins 5 of sequence numbers 1-5 are arranged on one side of the bobbin 1, and the PIN pins 5 of sequence numbers 6-7 are arranged on the other side of the bobbin 1; the primary wire group 3 includes an N1 winding 31, an N2 winding 32, an N4 winding 33 and an N5 winding 34, two ends of the N1 winding 31 are electrically connected to the PIN pins 5 of sequence numbers 4 and 3, respectively, two ends of the N2 winding 32 are electrically connected to the PIN pins 5 of sequence numbers 2 and 1, respectively, one end of the N4 winding 33 is electrically connected to the PIN pin 5 of sequence number 1, a normally closed terminal 7 is arranged on the bobbin 1, the other end of the N4 winding 33 is connected to the normally closed terminal 7 of the bobbin 1, and two ends of the N5 winding 34 are electrically connected to the PIN pins 5 of sequence numbers 3 and 5, respectively;
[0038] The number of winding turns of the N1 winding 31 on the bobbin 1 is 25TS, the number of winding turns of the N2 winding 32 on the bobbin 1 is 7TS, the number of winding turns of the N4 winding 33 on the bobbin 1 is 5TS, and the number of winding turns of the N5 winding 34 on the bobbin 1 is 20TS;
[0039] The secondary line group 4 includes an N3 winding 41, and two ends of the N3 winding 41 are electrically connected to the PIN pins 5 of sequence number 6 and sequence number 7 respectively;
[0040] The number of winding turns of the N3 winding 41 is 5TS;
[0041] By completing the winding of the primary wire group 3 and the secondary wire group 4 on the wire rack 1 in the above manner, the primary wire group 3 and the secondary wire group 4 are separated from each other with a certain safety spacing, which can effectively avoid the occurrence of short circuits, have better insulation performance, and can stably pass the withstand voltage test.
[0042] Furthermore, the outsides of the N1 winding 31, N2 winding 32, N3 winding 41, N4 winding 33 and N5 winding 34 are all covered with insulating tape 8, so that the windings on the primary wire group 3 and the secondary wire group 4 do not affect each other, and the stability is higher.
[0043] Furthermore, the inserted isolation sheet 6 is made of Mylar sheet, which has better insulation performance and can effectively avoid the occurrence of short circuit.
[0044] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.
Claims
1. An electronic transformer without a sleeve and a magnetic core adhesive, comprising a wire rack, a magnetic core, a primary wire group and a secondary wire group, wherein the bottom side of the wire rack is inlaid with 7 PIN pins arranged in Arabic numerals, the primary wire group is electrically connected to the PIN pins numbered 1-5, and the secondary wire group is electrically connected to the PIN pins numbered 6-7; Features: The secondary wire group is wound with film-wrapped wire, and an insertable isolation sheet is provided on the bottom side of the wire rack. The insertable isolation sheet is located on one side of the PIN pins numbered 6-7.
2. An electronic transformer with the sleeve and the core adhesive removed according to claim 1, Features: The magnetic cores are provided with two, the wire frame is installed between the two magnetic cores with clearance fit, and the side edge of the inserted isolation sheet is plug-fitted and fixed in the fitting gap between the wire frame and the magnetic core.
3. An electronic transformer with the sleeve and the core adhesive removed according to any one of claims 1 or 2, Features: The PIN pins numbered 1-5 are arranged on one side of the bobbin, and the PIN pins numbered 6-7 are arranged on the other side of the bobbin.
4. An electronic transformer with the sleeve and the core adhesive removed according to claim 3, Features: The primary winding group includes an N1 winding, an N2 winding, an N4 winding and an N5 winding, the two ends of the N1 winding are electrically connected to the PIN pins of number 4 and number 3 respectively, the two ends of the N2 winding are electrically connected to the PIN pins of number 2 and number 1 respectively, one end of the N4 winding is electrically connected to the PIN pin of number 1, a normally closed end is provided on the wire rack, the other end of the N4 winding is connected to the normally closed end of the wire rack, and the two ends of the N5 winding are electrically connected to the PIN pins of number 3 and number 5 respectively.
5. An electronic transformer with the sleeve and the magnetic core adhesive removed according to claim 4, Features: The number of winding turns of the N1 winding on the bobbin is 25TS, the number of winding turns of the N2 winding on the bobbin is 7TS, the number of winding turns of the N4 winding on the bobbin is 5TS, and the number of winding turns of the N5 winding on the bobbin is 20TS.
6. An electronic transformer with the sleeve and the core adhesive removed according to claim 5, Features: The secondary line group includes an N3 winding, and two ends of the N3 winding are electrically connected to the PIN pins numbered 6 and 7 respectively.
7. An electronic transformer with the sleeve and the core adhesive removed according to claim 6, Features: The number of winding turns of the N3 winding is 5TS.
8. An electronic transformer with the sleeve and the core adhesive removed according to claim 6, Features: The outer sides of the N1 winding, the N2 winding, the N3 winding, the N4 winding and the N5 winding are all covered with insulating tape.