Chip inductor

Abstract

The chip inductor comprises a shell, a magnetic core, a coil and a terminal, the shell is provided with a containing space, the magnetic core is installed in the containing space, the coil is installed in the magnetic core, the terminal is connected with a pin of the coil and used for external electrical connection, the terminal is provided with a plurality of grooves formed by protruding towards one side, and the grooves are arranged in the containing space. The surface of the terminal looks corrugated, so that the tinning area can be increased, the tinning amount of connection with the substrate is increased, the firmness is higher, and the vibration resistance and impact resistance of the chip inductor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, in particular to a chip inductor. Background Art

[0002] Chip inductors used in the automotive field are mainly assembled from a casing, a magnetic core, a coil, and terminals. First, the coil and the terminal are connected by spot welding; second, the coil and the terminal are molded together with the powder; finally, the terminal is folded flat to complete the packaging; and the finished product is given to the customer to be welded to the substrate.

[0003] The existing automotive inductor patch method mainly provides the terminal to the customer in a conventional straight folded shape, and the customer then connects it to the substrate. However, this fixing method is not reliable, because the car is always in motion or bumping when driving, which can easily cause the inductor patch terminal and the customer's substrate to deform and warp, and even fall off in serious cases. Utility Model Content

[0004] Based on this, it is necessary to provide a chip inductor to solve the existing automotive inductor patch method, which is mainly to provide the terminal to the customer in a conventional straight folded shape, and the customer then connects it to the substrate. However, this fixing method is weak in reliability, because the car is always in motion or bumping when driving, which easily causes the inductor chip terminal and the customer's substrate to deform and warp, and in serious cases, fall off.

[0005] The utility model provides a chip inductor, which comprises a shell, a magnetic core, a coil and a terminal. The shell is provided with a containing space, the magnetic core is installed in the containing space, the coil is installed in the magnetic core, the terminal is connected to the pin of the coil and is used for external electrical connection, and the terminal is provided with a plurality of grooves protruding to one side.

[0006] In one embodiment, the terminal includes a lead portion and a connecting portion connected to the lead portion, the lead portion is provided with a plurality of grooves, the connecting portion is provided with a first barb, the magnetic core is provided with a first hook groove, and the first barb can be engaged in the first hook groove.

[0007] In one embodiment, the lead portion is provided with a second barb, the magnetic core is provided with a second barb groove, the second barb can be engaged in the second barb groove, and the second barb is connected to the pin of the coil.

[0008] In one embodiment, the magnetic core is provided with a plurality of corrugated grooves, and each of the protrusions is fitted to each of the corrugated grooves.

[0009] In one embodiment, the magnetic core is further provided with a placement groove, and the connecting portion is attached to the placement groove.

[0010] In one embodiment, the groove is triangular.

[0011] In one embodiment, the groove is arc-shaped.

[0012] In one embodiment, there are two magnetic cores, which are arranged at intervals in the accommodating space, and the coil and the terminal are respectively arranged in one-to-one correspondence with the magnetic cores.

[0013] In one embodiment, the outer shell is provided with an opening communicating with the accommodating space, the magnetic core is installed in the accommodating space from the opening, and the outer shell is provided with a partition plate, and the partition plate is connected to the middle of the opening to separate the two magnetic cores.

[0014] In one embodiment, the outer shell is further provided with a through groove communicating with the accommodating space, and the through groove is used for dissipating heat from the chip inductor.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] Using the chip inductor of the present invention, the outer shell of the chip inductor is provided with an accommodating space, the magnetic core is installed in the accommodating space, the coil is installed in the magnetic core, the terminal is connected to the lead of the coil and is used for external electrical connection. The terminal is provided with a plurality of grooves protruding to one side, so that the surface of the terminal looks corrugated, which can increase the tinning area, thereby increasing the amount of tinning connected to the substrate and having stronger firmness, thus improving the vibration resistance and impact resistance of the chip inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Among them:

[0019] Figure 1 is an isometric schematic diagram of a chip inductor in one embodiment.

[0020] Figure 2 is Figure 1 an exploded schematic diagram of the chip inductor shown.

[0021] Figure 3 is Figure 2 a schematic diagram of the coil and the terminal in the chip inductor shown.

[0022] Reference numerals:

[0023] 1. Housing; 11. Accommodating space; 12. Opening; 13. Partition; 14. Through groove;

[0024] 2. Magnetic core; 21. First hook groove; 22. Corrugated groove; 23. Placing groove;

[0025] 3. Coil;

[0026] 4. Terminal; 41. Lead portion; 42. Connection portion; 43. Groove; 44. First barb; 45. Second barb;

[0027] 100. Substrate. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0029] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed. It is only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation to the present utility model.

[0031] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0032] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0033] Please refer to Figures 1 to 3 , and now the chip inductor provided by the present utility model will be described.

[0034] The chip inductor includes a shell 1, a magnetic core 2, a coil 3 and a terminal 4. The shell 1 is provided with a accommodating space 11. The magnetic core 2 is installed in the accommodating space 11. The coil 3 is installed in the magnetic core 2. The terminal 4 is connected to the pin of the coil 3 and is used for external electrical connection. The terminal 4 is provided with a plurality of grooves 43 protruding to one side.

[0035] It can be understood that the shell 1 of the chip inductor is provided with a accommodating space 11, the magnetic core 2 is installed in the accommodating space 11, the coil 3 is installed in the magnetic core 2, the terminal 4 is connected to the pin of the coil 3, and is used for external electrical connection, and the terminal 4 is provided with a plurality of grooves 43 protruding to one side, so that the surface of the terminal 4 looks corrugated, which can increase the tinning area, thereby increasing the tinning amount connected to the substrate 100, and making it more firm, thereby improving the vibration resistance and impact resistance of the chip inductor.

[0036] Specifically, the groove 43 is triangular in shape, so as to increase the tinning area.

[0037] Of course, in other embodiments, the groove 43 is arc-shaped, so as to increase the tinning area.

[0038] In this embodiment, the terminal 4 includes a lead portion 41 and a connecting portion 42 connected to the lead portion 41, the lead portion 41 is provided with a plurality of grooves 43, the connecting portion 42 is provided with a first barb 44, the magnetic core 2 is provided with a first hook groove 21, and the first barb 44 can be engaged in the first hook groove 21. By providing the connecting portion 42 with the first barb 44, and the first barb 44 is engaged with the first hook groove 21, the connecting portion 42 can be installed on the magnetic core 2.

[0039] Furthermore, the lead portion 41 is provided with a second barb 45, the magnetic core 2 is provided with a second barb groove, the second barb 45 can be engaged in the second barb groove, and the second barb 45 is connected to the pin of the coil 3. By providing the lead portion 41 with the second barb 45, and the second barb 45 is engaged with the second barb groove, the lead portion 41 can be installed on the magnetic core 2.

[0040] In addition, the first barb 44 is engaged with the first hook groove 21, and the second barb 45 is engaged with the second hook groove, which can prevent the terminal 4 and the magnetic core 2 from warping, reduce the breakage of the coil 3 pin and the terminal 4, and thus increase the service life.

[0041] In one embodiment, if Figure 2 and Figure 3 As shown, the magnetic core 2 is provided with a plurality of corrugated grooves 22, and each protrusion is fitted to each corrugated groove 22. Since the plurality of grooves 43 of the terminal 4 is formed by a plurality of protrusions to one side, in order to ensure a stable connection between the terminal 4 and the magnetic core 2, by providing a plurality of corrugated grooves 22 to fit each protrusion, no gap is generated between the terminal 4 and the magnetic core 2, thereby ensuring the stability of the connection.

[0042] In this embodiment, the magnetic core 2 is further provided with a placement groove 23, and the connecting portion 42 is attached to the placement groove 23. The connecting portion 42 being attached to the placement groove 23 further improves the stability of the connection between the terminal 4 and the magnetic core 2. In addition, by providing the placement groove 23, it is possible to prevent the connecting portion 42 from leaking outside the magnetic core 2, thereby improving the aesthetics.

[0043] In one embodiment, as Figure 1 and Figure 2 shown, there are two magnetic cores 2, which are arranged at intervals within the accommodation space 11, and the coil 3 and the terminal 4 are respectively arranged in one-to-one correspondence with the magnetic core 2. The two magnetic cores 2 are arranged at intervals so that the two magnetic cores 2 will not conduct directly, thereby improving the use effect.

[0044] In this embodiment, the housing 1 is provided with an opening 12 communicating with the accommodation space 11, the magnetic core 2 is installed in the accommodation space 11 from the opening 12, and the housing 1 is provided with a partition 13, and the partition 13 is connected to the middle of the opening 12 to separate the two magnetic cores 2. By providing the partition 13 in the middle of the opening 12, the two magnetic cores 2 can be separated.

[0045] Of course, in other embodiments, the partition 13 penetrates the accommodation space 11 and is connected to the wall surface of the accommodation space 11. In this way, the separation effect can be improved.

[0046] In one embodiment, as Figure 2 shown, the housing 1 is further provided with a through groove 14 communicating with the accommodation space 11, and the through groove 14 is used for dissipating heat from the chip inductor. By providing the through groove 14, during the use of the chip inductor, heat can be dissipated to the outside through the through groove 14 to avoid high temperature.

[0047] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A chip inductor, characterized in that, The chip inductor includes a housing, a magnetic core, a coil and terminals. The housing is provided with a receiving space, the magnetic core is installed in the receiving space, the coil is installed in the magnetic core, the terminals are connected to the pins of the coil and are used for external electrical connection, and the terminals are provided with a plurality of grooves formed by protruding to one side.

2. The chip inductor according to claim 1, characterized in that, The terminals include a lead portion and a connecting portion connected to the lead portion. The lead portion is provided with a plurality of the grooves, the connecting portion is provided with a first barb, the magnetic core is provided with a first hook groove, and the first barb can be engaged in the first hook groove.

3. The chip inductor according to claim 2, wherein The lead portion is provided with a second barb, the magnetic core is provided with a second hook groove, the second barb can be engaged in the second hook groove, and the second barb is connected to the pin of the coil.

4. The chip inductor according to claim 2, characterized in that, The magnetic core is provided with a plurality of corrugated grooves, and each of the protrusions fits into each of the corrugated grooves.

5. The chip inductor according to claim 2, wherein, The magnetic core is further provided with a placement groove, and the connecting portion fits into the placement groove.

6. The chip inductor according to claim 1, characterized in that, The grooves are triangular.

7. The chip inductor according to claim 1, wherein The grooves are arc-shaped.

8. The chip inductor according to claim 1, wherein There are two magnetic cores, which are arranged at intervals in the receiving space, and the coil and the terminals are respectively arranged corresponding to the magnetic cores one by one.

9. The chip inductor according to claim 8, wherein The housing is provided with an opening communicating with the receiving space, the magnetic core is installed in the receiving space from the opening, and the housing is provided with a partition board, and the partition board is connected to the middle of the opening to separate the two magnetic cores.

10. The chip inductor according to claim 1, characterized in that, The housing is further provided with a through groove communicating with the receiving space, and the through groove is used for dissipating heat from the chip inductor.

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