CN209804418U

CN209804418U - High-temperature-resistant and low-temperature-resistant I-shaped inductor

Info

Publication number: CN209804418U
Application number: CN201921127991.4U
Authority: CN
Inventors: 刘燕军; 周锦章
Original assignee: Shenzhen Century Stable Electronic Co Ltd
Current assignee: Shenzhen Century Stable Electronic Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2019-12-17
Anticipated expiration: 2029-07-17

Abstract

The utility model belongs to the technical field of the technique of inductance and specifically relates to a high temperature resistant low temperature resistant I shape inductor is related to. The inductor comprises a hollow I-shaped framework and a magnetic core arranged in the framework, wherein a coil is wound on the framework in the circumferential direction, and the framework and the coil are packaged through a packaging layer. The thermal insulation layer is added on the inductor, so that the high-temperature resistance and the low-temperature resistance are good, a good buffering effect is achieved, the framework of the inductor is not easy to break, and the normal use of the inductor can be better guaranteed.

Description

High-temperature-resistant and low-temperature-resistant I-shaped inductor

Technical Field

The utility model belongs to the technical field of the technique of inductance and specifically relates to a high temperature resistant low temperature resistant I shape inductor is related to.

Background

An inductor is an element capable of converting electric energy into magnetic energy and storing the magnetic energy, and generally comprises a framework, a winding, a shielding case, a packaging material, a magnetic core or an iron core and the like. Inductors are also a relatively common type of electronic component in electrical circuits.

the inductor can be divided into a winding type inductor and a laminated type inductor according to a manufacturing method, the winding type inductor of the winding type inductor is formed by winding a copper wire into a spiral shape on a ferrite magnetic core, the size of the winding type inductor is rich and colorful, the high inductance value of mH level can be achieved, the winding type inductor is suitable for the large current field and the high inductance value field, and the winding type inductor is widely applied to the fields of mobile phones, televisions, hard disk drivers, digital cameras and the like.

For convenience of winding, an i-shaped inductor is often used in a circuit, but with the development and progress of science and technology, the requirement on the inductor is higher and higher, and particularly for some high-temperature and low-temperature environments, the quality of the inductor directly influences the normal operation of an electric appliance.

Chinese utility model patent CN202601390U discloses a high temperature resistance inductor, including skeleton, coil and pin, the coil is around on the skeleton, the pin sets up in the skeleton bottom, the skeleton is the bakelite skeleton, and above-mentioned scheme adopts the bakelite skeleton, and the chemical name of bakelite is phenolics, and temperature resistance is better, non-deformable, and the low price, but phenolics is a hard and fragile thermosetting material, and toughness is good inadequately, and the skeleton is broken easily or bursts apart in transportation or use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high temperature resistant low temperature resistant I shape inductor adds the insulating layer on the inductor, and high temperature resistant and low temperature resistant performance is all fine, has fine cushioning effect moreover, and the skeleton of inductor is difficult to the breakage, the normal use of assurance inductor that can be better.

The utility model discloses an aim at can realize through following technical scheme: high temperature resistant low temperature resistant I shape inductor is including hollow I shape skeleton and the magnetic core that sets up in the skeleton, and the winding has the coil on the skeleton circumference, and skeleton and coil pass through the encapsulation layer encapsulation, are equipped with the insulating layer between coil and the encapsulation layer, and the insulating layer intussuseption is filled with the coolant liquid.

Through adopting above-mentioned technical scheme, the coolant liquid specific heat capacity is bigger, is difficult to intensification and cooling, and then the operating temperature that keeps the inductance that can be better has excellent high temperature resistant and low temperature resistant performance, and the coolant liquid is liquid in addition, plays fine cushioning effect in inductor transportation and use, obtains obviously alleviating the impact force of each part of inductance, and the skeleton of inductor is also difficult to the breakage.

The utility model discloses further set up to: the one side that the coil was kept away from to the insulating layer is organic silicon glue film, and the one side of laminating coil is heat conduction silica gel layer.

By adopting the technical scheme, the organic silicon adhesive layer has higher thermal stability and good heat insulation, and the working temperature in the inductor is not easy to change; the organic silica gel layer also has good moisture resistance and shock resistance, particularly good shock resistance under high frequency, further obviously relieves the impact force on each part of the inductor, and the framework of the inductor is not easy to break.

The heat conduction silica gel layer has fine heat conductivility, and the heat that the coil produced in the course of the work also conducts for the coolant liquid through the heat conduction silica gel layer easily, has fine cooling effect. The heat conduction silica gel layer has excellent cold and hot alternation resistance, ageing resistance and electrical insulation performance, still has excellent dampproofing, antidetonation, corona resistance, anti electric leakage performance and chemical resistance, is applied to the utility model discloses, the comprehensive properties of promotion inductor that can be better.

The utility model discloses further set up to: the framework comprises a central tube and end tubes arranged at two ends of the central tube, and the organic silicon adhesive layer is attached to the opposite surfaces of the two end tubes.

By adopting the technical scheme, the organic silicon adhesive layer has good heat-insulating property, is attached to the opposite surfaces of the two end pipes, can further prevent the heat exchange inside and outside the inductor, and has better high-temperature resistance and low-temperature resistance.

The utility model discloses further set up to: an elastic metal strip is arranged on one surface of the heat insulation layer away from the coil, and two ends of the elastic metal strip are movably connected; the heat insulation layer is disconnected and partially overlapped at the positions close to the two ends of the elastic metal strip.

By adopting the technical scheme, the thermal insulation layer is disconnected, the manufacturing process is simple and convenient, the elastic metal strip has a good limiting effect, the shape of the thermal insulation layer cannot be excessively limited, the elasticity of the thermal insulation layer is good, and the thermal insulation layer is better attached to the packaging material and the coil.

The utility model discloses further set up to: one end of the elastic metal strip is provided with a T-shaped groove, and the other end of the elastic metal strip is provided with a T-shaped piece inserted into the T-shaped groove.

Through adopting above-mentioned technical scheme, through the cooperation of T type groove and T type piece, fixed elastic metal strip that just can be fine, easy operation, production technology is also simple.

The utility model discloses further set up to: the positioning groove is formed in one surface, attached to the thermal insulation layer, of the T-shaped sheet, and the positioning piece capable of being inserted into the positioning groove is arranged on the thermal insulation layer.

By adopting the technical scheme, the thermal insulation layer is more convenient and quicker to install and is not easy to misplace through the matching of the positioning piece and the positioning groove; the heat insulation and cold insulation effects are better.

The utility model discloses further set up to: the setting element sets up to the frustum form, and the constant head tank also sets up to the frustum form, and setting element and constant head tank interference fit.

Through adopting above-mentioned technical scheme, the setting element can be faster more accurate insert the constant head tank in, and be difficult to follow the roll-off in the constant head tank, the installation is simple, effective.

The utility model discloses further set up to: more than two elastic metal strips are uniformly arranged, and the connecting line of the end faces of the elastic metal strips and the axis of the coil form an acute angle.

By adopting the technical scheme, the fixing effect of the plurality of metal strips is better, and the stress of the heat insulation layer is more uniform; the connecting line of the end face of the elastic metal strip and the axis of the coil form an acute angle, so that the joint of the metal strip is staggered, and the fixing effect is better.

The utility model discloses further set up to: the end pipe is sleeved with an elastic sleeve.

By adopting the technical scheme, the elastic sleeve has a good protection effect on the end pipe, and the impact of external force on the end pipe in the transportation and use processes can be well reduced.

The utility model discloses further set up to: the surface of the elastic sleeve, which is attached to the packaging layer, is an arc surface.

By adopting the technical scheme, the stress of the packaging layer is not too concentrated, the packaging layer is not easy to crack, and the service life of the inductor is longer.

To sum up, the utility model discloses a beneficial technological effect does:

1. The cooling liquid specific heat capacity is bigger, is difficult to heat up and cool down, and then the operating temperature that keeps the inductance that can be better has excellent high temperature resistant and low temperature resistance, and the cooling liquid is liquid in addition, plays fine cushioning effect in inductor transportation and use, obtains obviously alleviating the impact force of each part of inductance, and the skeleton of inductor just is difficult to the breakage yet.

2. The organic silica gel layer has high thermal stability and good heat insulation, and the working temperature in the inductor is not easy to change; the organic silica gel layer also has good insulativity, moisture resistance and shock resistance, particularly good shock resistance under high frequency, further obviously relieves the impact force on each part of the inductor, and the framework of the inductor is not easy to break. The heat conduction silica gel layer has fine heat conductivility, and the heat that the coil produced in the course of the work also conducts for the coolant liquid through the heat conduction silica gel layer easily, has fine cooling effect.

3. The thermal-protective coating disconnection, the preparation technology is simple and convenient, and the elastic metal strip both had played fine limiting displacement, can not too inject the shape of thermal-protective coating again, and thermal-protective coating elasticity is good, and the thermal-protective coating is all better with packaging material and coil laminating.

4. The elastic sleeve has a good protection effect on the end pipe, and can well reduce impact of external force on the end pipe in the transportation and use processes.

5. The surface of the elastic sleeve, which is attached to the packaging layer, is an arc surface, so that the stress of the packaging layer is not too concentrated, the packaging layer is not easy to crack, and the service life of the inductor is longer.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the thermal insulation layer and the elastic sleeve in the embodiment of the present invention;

FIG. 3 is a schematic diagram of a detailed structure of an overlapped portion of an organic silicone adhesive layer in an embodiment of the present invention;

Fig. 4 is a schematic view of a fixing structure of the elastic metal strip in the embodiment of the present invention.

In the figure, 1, a skeleton; 11. a central tube; 12. an end tube; 2. a magnetic core; 3. a coil; 4. a packaging layer; 5. a thermal insulation layer; 51. an organic silica gel layer; 511. a positioning member; 512. a lengthening part; 5121. salient points; 52. cooling liquid; 53. a heat conductive silica gel layer; 6. an elastic metal strip; 61. a T-shaped groove; 62. a T-shaped sheet; 621. positioning a groove; 7. a pin; 8. an elastic sleeve.

Detailed Description

The invention will be described in more detail with reference to the following figures 1-4 and examples.

A high-temperature-resistant and low-temperature-resistant I-shaped inductor is shown in figures 1 and 2 and comprises a hollow I-shaped framework 1 and a magnetic core 2 arranged in the framework 1, wherein a coil 3 is wound on the framework 1 in the circumferential direction, the framework 1 and the coil 3 are packaged through a packaging layer 4, the coil 3 is connected with pins 7 in a leading-out mode from the framework 1, the two pins 7 are respectively connected with two ends of the coil 3, and the two pins 7 are respectively connected with a positive electrode and a negative electrode during use.

Be equipped with insulating layer 5 between coil 3 and the encapsulated layer 4, the one side that coil 3 was kept away from to insulating layer 5 is organic silica gel layer 51, and the one side of laminating coil 3 is heat conduction silica gel layer 53, forms the cavity between organic silica gel layer 51 and the heat conduction silica gel layer 53, and the cavity intussuseption is filled with coolant liquid 52. The organic silicon adhesive layer 51 has high thermal stability and good heat insulation performance, and the working temperature in the inductor is not easy to change; the organic silica gel layer 51 also has good moisture resistance and shock resistance, and particularly has good shock resistance at high frequency; the heat-conducting silica gel layer 53 has good heat-conducting property, and heat generated by the coil 3 in the working process is easily conducted to the cooling liquid 52 through the heat-conducting silica gel layer 53, so that the cooling effect is good. Heat conduction silica gel layer 53 has excellent cold and hot alternation resistance, ageing resistance and electrical insulation performance, still has excellent dampproofing, antidetonation, corona resistance, anti electric leakage performance and chemical resistance medium performance, is applied to the utility model discloses, the comprehensive properties of promotion inductor that can be better.

In the embodiment, the cooling liquid 52 is preferably engine cooling liquid 52 sold by Shenzhen classical beautifying technology and technology development Limited, the model is DM-4003, the boiling point is as high as 130 ℃, the freezing point is-50 ℃, and the cooling liquid has excellent anti-boiling and anti-freezing effects. The coolant liquid 52 specific heat capacity is bigger, is difficult to heat up and cool down, and then the operating temperature that keeps the inductance that can be better, has excellent high temperature resistant and low temperature resistance, and coolant liquid 52 is liquid in addition, plays fine cushioning effect in inductor transportation and use, obtains obviously alleviating to the impact force of each part of inductance, and the skeleton 1 of inductor just also is difficult to the breakage, the normal use of assurance inductor that can be better.

As shown in fig. 2, the frame 1 includes a central tube 11 and end tubes 12 disposed at two ends of the central tube 11, and the silicone adhesive layer 51 is attached to the opposite surfaces of the two end tubes 12, so as to further prevent heat exchange between the inside and the outside of the inductor, and to achieve better high temperature resistance and low temperature resistance.

The end pipe 12 is further sleeved with the elastic sleeve 8, the elastic sleeve 8 has a good protection effect on the end pipe 12, and impact of external force on the end pipe 12 in the transportation and use processes can be well reduced. The surface of the elastic sleeve 8, which is attached to the packaging layer 4, is a cambered surface, so that the stress of the packaging layer 4 is not too concentrated and is not easy to crack.

as shown in fig. 2 and 3, an elastic metal strip 6 is bonded to one surface of the heat insulation layer 5 away from the coil 3, namely the organic silica gel layer 51, and two ends of the elastic metal strip 6 are movably connected; the thermal insulation layer 5 is broken and partially overlapped near both ends of the elastic metal strip 6. One end of the organic silicon adhesive layer 51 close to the elastic metal strip 6 is lengthened to form an elongated portion 512, and the elongated portion 512 is overlapped with the other end of the organic silicon adhesive layer 51. The thermal-protective coating 5 breaks off, and the preparation technology is simple and convenient, and elastic metal strip 6 both had played fine limiting displacement, can not too inject the shape of thermal-protective coating 5 again, and thermal-protective coating 5 elasticity is good, and thermal-protective coating 5 is all better with the laminating of packaging material and coil 3.

The surface of the elongated portion 512, which is attached to the other end of the silicone adhesive layer 51, is provided with a protrusion 5121, and the other end of the silicone adhesive layer 51 is provided with a groove (not shown) for inserting the protrusion 5121. The heat insulation layer 5 is better attached to the coil 3, relative sliding is not easy to occur, the structure is simple, the operation is simple, and the production process is simple.

As shown in fig. 4, one end of the elastic metal strip 6 is provided with a T-shaped groove 61, and the other end is provided with a T-shaped piece 62 for inserting into the T-shaped groove 61. The T-shaped sheet 62 is provided with a positioning groove 621 on one side attached to the heat insulation layer 5, and the heat insulation layer 5 is provided with a positioning piece 511 capable of being inserted into the positioning groove 621. Through the matching of the positioning piece 511 and the positioning groove 621, the heat insulation layer 5 is more convenient and quicker to install and is not easy to be misplaced; the heat insulation and cold insulation effects are better.

The positioning element 511 is disposed in a frustum shape, the positioning slot 621 is also disposed in a frustum shape, and the positioning element 511 and the positioning slot 621 are in interference fit. The positioning member 511 can be inserted into the positioning slot 621 faster and more accurately, and is not easy to slide out of the positioning slot 621, so that the installation is simple and effective.

the elastic metal strips 6 are uniformly arranged more than two, three are arranged in the embodiment, and other embodiments can flexibly change according to the width of the metal strips and the height of the coil 3, so that better fixation is realized, and the stress of the heat insulation layer 5 is more uniform. The connecting line of the end face of the elastic metal strip 6 and the axis of the coil 3 form an acute angle, so that the joint of the metal strips is staggered, and the fixing effect is better.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. High temperature resistant low temperature resistant I shape inductor, including hollow I shape skeleton (1) and set up magnetic core (2) in skeleton (1), the winding has coil (3) on skeleton (1) circumference, and skeleton (1) and coil (3) pass through encapsulation layer (4) encapsulation, characterized by is equipped with between coil (3) and encapsulation layer (4) insulating layer (5), and insulating layer (5) intussuseption is filled with coolant liquid (52).

2. The I-shaped inductor with high temperature resistance and low temperature resistance as claimed in claim 1, wherein the surface of the heat insulation layer (5) far away from the coil (3) is an organic silica gel layer (51), and the surface attached to the coil (3) is a heat conduction silica gel layer (53).

3. The I-shaped inductor with high temperature resistance and low temperature resistance as claimed in claim 2, wherein the framework (1) comprises a central tube (11) and end tubes (12) arranged at two ends of the central tube (11), and the organic silica gel layer (51) is attached to the opposite surfaces of the two end tubes (12).

4. The I-shaped inductor with high temperature resistance and low temperature resistance as claimed in claim 1, wherein an elastic metal strip (6) is arranged on one surface of the heat insulation layer (5) far away from the coil (3), and two ends of the elastic metal strip (6) are movably connected; the heat insulation layer (5) is disconnected and partially overlapped at the positions close to the two ends of the elastic metal strip (6).

5. The I-shaped inductor with high temperature and low temperature resistance as claimed in claim 4, wherein the elastic metal strip (6) is provided with a T-shaped groove (61) at one end and a T-shaped piece (62) inserted into the T-shaped groove (61) at the other end.

6. The I-shaped inductor with high temperature resistance and low temperature resistance as claimed in claim 5, wherein a positioning groove (621) is formed in one surface of the T-shaped sheet (62) attached to the heat insulation layer (5), and a positioning part (511) capable of being inserted into the positioning groove (621) is arranged on the heat insulation layer (5).

7. the I-shaped inductor with high temperature resistance and low temperature resistance as claimed in claim 6, wherein the positioning element (511) is frustum-shaped, the positioning slot (621) is also frustum-shaped, and the positioning element (511) is in interference fit with the positioning slot (621).

8. The I-shaped inductor with high temperature resistance and low temperature resistance as claimed in claim 4, wherein more than two elastic metal strips (6) are uniformly arranged, and a connecting line of the end faces of the elastic metal strips (6) forms an acute angle with the axis of the coil (3).

9. A h-shaped inductor with high temperature and low temperature resistance as claimed in claim 3, characterized in that the end tube (12) is sleeved with an elastic sleeve (8).

10. The h-shaped inductor with high temperature and low temperature resistance as claimed in claim 9, wherein the surface of the elastic sleeve (8) attached to the packaging layer (4) is an arc surface.