Chip inductor for single-sided board

Abstract

The utility model is applicable to the technical field of inductors, and provides a chip inductor for a single-sided board, which comprises a magnetic core, an inductance coil, an insulating protective sleeve and a fixing mechanism, the inductance coil is wound outside the magnetic core, the insulating protective sleeve is sleeved outside the inductance coil, and the fixing mechanism is arranged at the bottom of the insulating protective sleeve. According to the scheme, the fixing mechanism is arranged, the metal cover body and the metal bottom cover are arranged at the end part of the pin, and when the metal bottom cover is in contact with solder paste at a welding point during mounting, the solder paste blocks the inflow hole, so that the space below the movable plate is sealed, the heat of the solder paste can heat the hot melting supporting leg in the accommodating cavity, and the hot melting supporting leg is melted into fluid; the elastic washer drives the movable plate to ascend, the air pressure in the cavity below the movable plate is reduced to form negative pressure, and part of solder paste at the welding spot is squeezed into the cover body from the inflow hole, so that the welding between the metal bottom cover and the welding spot is more stable and reliable, and the technical problem is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of inductor, especially relate to a patch inductor for single panel. BACKGROUND

[0002] After a brief structural adjustment, the inductor industry in China eliminates the backward capacity, filters out unqualified enterprises, and with the change of residents' consumption concept and the improvement of consumption demand, the inductor industry in China will continue to maintain the growth trend, and in the future, it will develop towards high quality, and show new trends such as variety increase and consumption diversification, the main body of China's inductor industry chain is constantly enriched, and the industrial ecology is gradually robust, according to the different manufacturing processes, the inductor can be divided into traditional plug-in inductor and patch inductor.

[0003] Although the current patch inductor technology is relatively mature, there are still some problems, for example, the traditional mounting method only relies on soldering the bottom surface of the pin to the solder joint to fix it, the stability of welding is not very high, the soldering will age after long-term use, and the inductor is easy to fall off, therefore, a patch inductor for single panel is needed to solve the problem of low stability of the current patch inductor welding, which is easy to cause loosening. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of patch inductor for single panel, to solve the problem of low stability of the current patch inductor welding, which is easy to cause loosening.

[0005] The utility model is realized as follows: a kind of patch inductor for single panel, comprising: magnetic core, inductor coil, insulating protective sleeve and fixed mechanism, the inductor coil is wound outside magnetic core, the insulating protective sleeve is set outside inductor coil, the fixed mechanism is set at the bottom of insulating protective sleeve;

[0006] The fixed mechanism includes pin, metal cover, metal bottom cover, containing cavity and negative pressure suction unit, the pin is fixed at the bottom of insulating protective sleeve, the metal cover is fixed at the bottom of pin, and the pin is located at the top center of metal cover, the metal bottom cover is fixed at the bottom of metal cover, the containing cavity is arranged in metal cover, and the negative pressure suction unit is arranged in containing cavity.

[0007] Preferably, the negative pressure suction unit includes inflow hole and movable plate, the inflow hole is arranged on the metal bottom cover in penetration, and the inflow hole is communicated with containing cavity, and the movable plate is slidably connected in containing cavity.

[0008] Preferably, the top of containing cavity is fixed with hot melt support leg, and one end of hot melt support leg is abutted with the upper surface of movable plate.

[0009] Preferably, an elastic gasket is fixed at the center of the bottom of the accommodating cavity, and one end of the elastic gasket is in abutment with the lower surface of the movable plate.

[0010] Preferably, the top of the metal cover is provided with an outflow hole, the outflow hole is through the accommodating cavity, and is located above the movable plate.

[0011] Preferably, the inflow hole and the outflow hole are symmetrically provided with a plurality of holes in front and back and left and right, and are one-to-one corresponding.

[0012] Compared with the prior art, the embodiment of the application has the following beneficial effects:

[0013] In the scheme, the fixing mechanism is provided, the metal cover and the metal bottom cover are arranged at the end of the pin, when the metal bottom cover contacts the tin paste at the welding point during mounting, the tin paste blocks the inflow hole, so that the space below the movable plate is sealed, the heat of the tin paste heats the hot melt support pin in the accommodating cavity, the hot melt support pin melts into a fluid, the elastic gasket drives the movable plate to rise, the air pressure in the cavity below the movable plate is low to form negative pressure, part of the tin paste at the welding point is squeezed into the cover from the inflow hole, so that the welding between the metal bottom cover and the welding point is more stable and reliable, and the technical problem is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the partial sectional structure schematic view of the inductor of the utility model;

[0015] Figure 2 is the partial sectional structure schematic view of the inductor of the utility model; Figure 1 A enlarged view;

[0016] Figure 3 is the partial sectional structure schematic view of the inductor of the utility model;

[0017] Figure 4 is the elastic gasket connecting structure schematic view of the utility model;

[0018] In the figure: 1, magnetic core; 2, inductor coil; 3, insulating protective sleeve; 4, fixing mechanism; 41, pin; 42, metal cover; 43, metal bottom cover; 44, accommodating cavity; 45, inflow hole; 46, movable plate; 47, hot melt support pin; 48, elastic gasket; 49, outflow hole. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the use herein of terms such as "comprise", "have" and "include" or variations such as "comprises", "comprising", "includes" and "including", is intended to be construed in a non-exclusive manner. The use herein of terms such as "first", "second", and the like does not imply a limitation on the number of objects that can be included in the application.

[0020] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0021] The utility model embodiment provides a kind of patch inductor for single-sided board, as shown in Figures 1-4 It includes: magnetic core 1, inductance coil 2, insulating protective sleeve 3 and fixed mechanism 4, inductance coil 2 is wound in the outside of magnetic core 1, insulating protective sleeve 3 is set in the outside of inductance coil 2, fixed mechanism 4 is arranged at the bottom of insulating protective sleeve 3;

[0022] Fixed mechanism 4 includes pin 41, metal cover 42, metal bottom cover 43, containing cavity 44 and negative pressure suction unit, pin 41 is fixed at the bottom of insulating protective sleeve 3, metal cover 42 is fixed at the bottom of pin 41, and pin 41 is located at the top center of metal cover 42, metal bottom cover 43 is fixed at the bottom of metal cover 42, containing cavity 44 is arranged in metal cover 42, and negative pressure suction unit is arranged in containing cavity 44;

[0023] Negative pressure suction unit includes inflow hole 45 and movable plate 46, inflow hole 45 is arranged through metal bottom cover 43, and inflow hole 45 is through containing cavity 44, movable plate 46 is slidably connected in containing cavity 44;The top of containing cavity 44 is fixed with hot-melt support foot 47, one end of hot-melt support foot 47 is abutted with the upper surface of movable plate 46;The bottom center of containing cavity 44 is fixed with elastic washer 48, one end of elastic washer 48 is abutted with the lower surface of movable plate 46.

[0024] It needs to be explained that, due to the existing mounting method, only the bottom surface of the pin is welded and fixed with the soldering point by soldering, the stability of welding is not high, the soldering will age after long time use, and the inductor is easy to fall off, therefore, a surface mount inductor for single panel is needed to solve the problem that the stability of welding of the surface mount inductor is not high and the inductor is easy to fall off, in order to solve the problem, the fixing mechanism 4 is arranged in the scheme, the metal cover 42 and the metal bottom cover 43 are arranged at the end of the pin 41, when the metal bottom cover 43 contacts the tin paste at the soldering point during mounting, the tin paste blocks the inflow hole 45, so that the space below the movable plate 46 is sealed, the heat of the tin paste heats the hot melt supporting leg 47 in the containing cavity 44, the hot melt supporting leg 47 melts into a fluid, the elastic gasket 48 drives the movable plate 46 to rise, the air pressure in the cavity below the movable plate 46 is low to form negative pressure, part of the tin paste at the soldering point is squeezed into the cover from the inflow hole 45, so that the welding between the metal bottom cover 43 and the soldering point is more stable and reliable, and the technical problem is effectively solved.

[0025] Specifically, in the embodiment, the scheme mainly includes a magnetic core 1, an inductor coil 2, an insulation protective sleeve 3 and a fixing mechanism 4, in use, tin paste is placed at an appropriate position on the soldering point, then the metal bottom cover 43 contacts the tin paste, at this time, the tin paste blocks the inflow hole 45, and the heat of the tin paste heats the hot melt supporting leg 47 in the containing cavity 44, at this time, the elastic gasket 48 drives the movable plate 46 to rise to form negative pressure, and then part of the tin paste at the soldering point is squeezed into the cover from the inflow hole 45.

[0026] As shown in the further preferred embodiment of the utility model, Figures 1-4 The metal cover 42 is provided with an outflow hole 49 at the top, the outflow hole 49 is through the containing cavity 44 and is located above the movable plate 46.

[0027] In the embodiment, the hot melt supporting leg 47 that is melted can flow out of the containing cavity 44 through the outflow hole 49.

[0028] As shown in the further preferred embodiment of the utility model, Figures 1-4 The inflow hole 45 and the outflow hole 49 are symmetrically provided with a plurality of holes in front and back and left and right, and are one-to-one corresponding.

[0029] In the embodiment, a plurality of inflow holes 45 and outflow holes 49 are arranged, so that the tin paste can be in multi-point contact with the metal bottom cover 43 and flow into the containing cavity 44, and the hot melt supporting leg 47 that is melted can be quickly discharged.

[0030] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the action sequence described, because according to the present application, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0031] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented by other ways. For example, the device embodiments described above are only illustrative, for example, the division of the above units, actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between devices or units, which can be electrical or other forms.

[0032] The units described above as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete or make other adjustments to the features in each embodiment of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of the present application.

Claims

1. A patch inductor for single-sided board, characterized by, Include: Magnetic core (1), inductor coil (2), insulation protective sleeve (3) and fixing mechanism (4), the inductor coil (2) is arranged outside the magnetic core (1), the insulation protective sleeve (3) is arranged outside the inductor coil (2), the fixing mechanism (4) is arranged at the bottom of the insulation protective sleeve (3); The fixing mechanism (4) includes a pin (41), a metal cover (42), a metal bottom cover (43), a containing cavity (44) and a negative pressure suction unit, the pin (41) is fixed at the bottom of the insulation protective sleeve (3), the metal cover (42) is fixed at the bottom of the pin (41), and the pin (41) is located at the top center of the metal cover (42), the metal bottom cover (43) is fixed at the bottom of the metal cover (42), the containing cavity (44) is arranged in the metal cover (42), and the negative pressure suction unit is arranged in the containing cavity (44).

2. A patch inductor for a single-sided board as defined in claim 1, wherein, The negative pressure suction unit includes an inflow hole (45) and a movable plate (46), the inflow hole (45) is arranged through the metal bottom cover (43), and the inflow hole (45) is communicated with the containing cavity (44), the movable plate (46) is slidably connected in the containing cavity (44).

3. A patch inductor for a single-sided board as defined in claim 2, wherein, The top of the containing cavity (44) is fixed with a hot melt support foot (47), one end of the hot melt support foot (47) abuts against the upper surface of the movable plate (46).

4. A patch inductor for a single-sided board as defined in claim 3, wherein, The bottom center of the containing cavity (44) is fixed with an elastic gasket (48), one end of the elastic gasket (48) abuts against the lower surface of the movable plate (46).

5. A patch inductor for a single-sided board as defined in claim 2, wherein, The top of the metal cover (42) is provided with an outflow hole (49), the outflow hole (49) is communicated with the containing cavity (44) and located above the movable plate (46).

6. A patch inductor for a single-sided board as defined in claim 5, wherein, The inflow hole (45) and the outflow hole (49) are symmetrically arranged in front and back and left and right, and are one-to-one corresponding.

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