Moisture-proof heat dissipation patch CD inductor

Abstract

The utility model relates to the technical field of inductors, in particular to a moisture-proof heat dissipation patch CD inductor which comprises an inductor body, the inductor body comprises an upper cover, a middle column and a lower cover, the upper cover, the middle column and the lower cover form an I shape, at least two parallel U-shaped electrode positions are concavely arranged on the upper surface of the upper cover, and the U-shaped electrode positions are arranged on the lower surface of the upper cover. Wire hanging grooves located between the adjacent U-shaped electrode positions are formed in the front side and the rear side of the upper cover in a concave mode, positioning clamping edges are arranged on the two sides, located in the vertical direction of the wire hanging grooves, of the upper cover and the lower cover, at least one limiting groove is formed in the surface of the positioning clamping edge of the lower cover in a concave mode, and elastic clamping pieces are arranged in the limiting grooves. The outer cover of the inductor body is provided with a heat dissipation cover which forms multi-point limiting with the elastic clamping piece, the side wall of the heat dissipation cover is provided with a plurality of heat dissipation holes which are arranged in a penetrating mode, and the heat dissipation holes are obliquely arranged on the side wall of the heat dissipation cover in a low-outside and high-inside mode. The beneficial effects of the utility model are that: can carry out fast heat dissipation and can prevent electricity from feeling damp.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, in particular to a moisture-proof heat dissipation patch CD inductor. Background Art

[0002] CD inductors are a type of chip inductors. Compared with conventional inductors, they have the characteristics of miniaturization, high quality, high energy storage and low resistance.

[0003] In the prior art, in order to pursue the miniaturization of electronic circuits and electronic devices, the volume of CD inductors is often designed to be very small. The electrode area of ​​CD inductors is too small, resulting in poor heat dissipation performance during actual use, and is not conducive to tinning and welding effects, which easily leads to cold soldering; in addition, the small size of CD inductors will also cause the interval between the two electrode positions of the inductor to be too narrow, which is easy to cause the inlet and outlet wires of the inductor to form a short circuit with the enameled wire in the wire package when the inductor is tinned.

[0004] The existing utility model patent with application number 202121199953.7 discloses a CD inductor core and a CD inductor. The CD inductor core includes an upper cover, a middle column and a lower cover. The upper cover, the middle column and the lower cover form an "I"-shaped structure. The outer surface of the upper cover is provided with an isolation column and electrode positions on the left and right sides of the isolation column. The two electrode positions are respectively covered on the outer surface of the upper cover and extend to the edge of the upper cover along the length direction of the isolation column. The middle of the electrode position is concave downward, and the middle position of the left and right edges of the upper cover is provided with an inwardly concave hanging groove. The sinking depth of the electrode position is 0.32mm-0.47mm; the CD inductor includes a winding group and the above-mentioned CD inductor core. The CD inductor core extends the length of the electrode position to increase the area of ​​the electrode position, effectively improves the tin absorption capacity, welding effect and heat dissipation performance of the electrode position, and deepens the sinking depth of the electrode position to further improve the tin absorption capacity and avoid the occurrence of cold soldering to produce defective products.

[0005] However, although this patent can achieve heat dissipation, it is easy for the solder to become damp in humid climates, thus affecting subsequent use. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a SMD CD inductor which can not only quickly dissipate heat but also prevent the inductor from getting damp, in view of the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the following technical scheme is adopted, including an inductor body, the inductor body includes an upper cover, a middle column and a lower cover, the upper cover, the middle column and the lower cover form an "I" shape, the upper surface of the upper cover is recessed with at least two parallel U-shaped electrode positions, the front and rear sides of the upper cover are recessed with hanging grooves located between adjacent U-shaped electrode positions, the upper cover and the lower cover are both provided with positioning edges on both sides of the hanging groove in the vertical direction, the surface of the positioning edge of the upper cover is recessed with at least one limiting groove, an elastic clamping piece is arranged in the limiting groove, the outer cover of the inductor body is provided with a heat dissipation cover that forms a multi-point limit with the elastic clamping piece, the side wall of the heat dissipation cover is opened with a plurality of penetrating heat dissipation holes, and the heat dissipation holes are inclinedly arranged on the side wall of the heat dissipation cover with a lower outside and a higher inside.

[0008] By adopting the above technical scheme, a winding group can be wound around the middle column, and the two ends of the winding group can be respectively hung in two U-shaped electrode positions along the hanging groove. There is a certain distance between the two U-shaped electrode positions, so it is not easy to wire them together. Since the winding is generally an arc-shaped wire, setting it as a U-shaped electrode position can also better adapt to the joint of the winding group, thereby increasing the contact area between the joint and the U-shaped electrode position, and it is also convenient to solder the joint in the U-shaped electrode position with solder, and the heat dissipation hole facing the outer wall of the heat dissipation cover is the low end, and the heat dissipation hole facing the inner wall of the heat dissipation cover is the high end, so that even if there is dust and water vapor, it is not easy to enter the heat dissipation cover. At the same time, the inclined setting of the heat dissipation hole can also help to better dissipate heat, and by covering the heat dissipation cover, the contact between the inductor body and the outside air can be reduced, so as to better protect the internal, and at the same time, the loading and unloading of the heat dissipation cover is also extremely simple, and it is limited at multiple points on the positioning card edges of the upper cover and the lower cover by elastic clamping. It only needs to be installed in a high temperature and humid working environment to achieve moisture-proof heat dissipation of the chip CD inductor, and the installation is simple and convenient.

[0009] A moisture-proof heat dissipation patch CD inductor can be further configured as follows: the internal cross-sectional shape of the heat dissipation cover is the same as that of the upper cover, and the inner wall of the heat dissipation cover is provided with clamping grooves on both sides corresponding to the positioning clamping edge for elastic clamping and limiting of the elastic clamping piece corresponding to the limiting groove position when the cover is set.

[0010] By adopting the above technical solution, multi-point clamping and limiting are achieved through clamping grooves. Two limiting grooves can be set on the positioning rib of each lower cover. Elastic clamping parts are set in the limiting grooves and fixed at four corners to achieve multi-point fixation. At the same time, if the inner wall of the heat dissipation cover and the upper cover and lower cover are required.

[0011] A moisture-proof heat dissipation patch CD inductor can be further configured as follows: the elastic clamping part includes a clamping spring with one end abutting against a limiting groove, the clamping spring sleeve is provided with a clamping column, the clamping column is provided with an arc-shaped clamping head, the clamping column is provided with a limiting rib with a diameter larger than the arc-shaped clamping head at one end close to the arc-shaped clamping head, the limiting rib abuts against the end of the clamping spring away from the abutting limiting groove, a silicone limiting sleeve is inserted at the opening of the limiting groove, and a limiting hole with the same diameter as the arc-shaped clamping head is provided on the silicone limiting sleeve.

[0012] By adopting the above technical scheme, one end of the clamping spring abuts against the limit groove, and the other end abuts against the clamping ball, and the other end can also be sleeved with a clamping column. The clamping column is provided with a limit rib abutting against the clamping spring at one end near the arc-shaped clamping head. When the clamping groove of the heat dissipation cover reaches the limit groove position, the clamping spring will press the clamping column out of the limit hole and send it into the clamping groove. At the same time, the limit rib cannot pop out from the limit hole, so it can play a limiting role on the clamping column, thereby completing multi-point limiting of the heat dissipation cover. The setting of the silicone limit sleeve is to facilitate the installation of the clamping spring and the clamping column. The clamping spring can be installed first, and then the clamping column is inserted and the limit rib is pressed against the clamping spring, and finally the silicone limit sleeve is inserted at the opening of the limit groove. The opening of the limit groove and the outer peripheral surface of the silicone limit sleeve can also be prevented from falling out by the cooperation of the protrusion groove.

[0013] A moisture-proof heat dissipation patch CD inductor can be further configured as follows: the inclination angle of the heat dissipation hole is 45°.

[0014] By adopting the above technical solution, the inclination angle of the heat dissipation hole is set to 45°, so that dust or water vapor is not easy to enter the heat dissipation cover, thereby protecting the CD inductor in the heat dissipation cover. At the same time, setting it to 45° also makes it easier to dissipate the heat generated by the inductor body during operation, thereby increasing the heat dissipation effect.

[0015] A moisture-proof heat dissipation patch CD inductor can be further configured as follows: the top surface of the heat dissipation cover is convexly provided with a plurality of heat dissipation plates arranged horizontally or vertically, and the inner surface of the heat dissipation cover opposite to the heat dissipation plates is in contact with the lower cover.

[0016] By adopting the above technical solution, a plurality of heat sinks are provided to increase the contact area between the heat sink cover and the air, thereby achieving more effective heat dissipation. At the same time, the heat sink cover can receive the heat transmitted from the lower cover, so that the heat generated by the inductor body during operation can be guided to the heat sink cover, and then the heat is dissipated through the heat sink plates.

[0017] A moisture-proof heat dissipation patch CD inductor can be further configured as follows: the inner wall of the heat dissipation cover is sprayed with an insulating heat-conducting coating.

[0018] Using the above technical solution, the insulating thermal conductive coating is an aluminum oxide titanium ceramic coating, an aluminum oxide ceramic coating, a zirconium oxide ceramic coating or a chromium oxide ceramic coating, and the thickness of the insulating thermal conductive coating is greater than 40μm. At the same time, the insulating thermal conductive coating can also be sprayed on the inner wall of the heat dissipation hole to achieve heat conduction. The insulating thermal conductive coating will not generate friction with the winding group, prevent leakage, and improve safety. At the same time, the insulating thermal conductive coating can quickly dissipate heat, avoid temperature concentration, and increase heat dissipation efficiency.

[0019] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model.

[0021] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the explosion state.

[0022] Figure 3 For the utility model embodiment Figure 2 Schematic diagram of the structure of the inductor body.

[0023] Figure 4 For the utility model embodiment Figure 2 Schematic diagram of the structure of the middle silicone limit sleeve.

[0024] Figure 5 For the utility model embodiment Figure 2 Schematic diagram of the structure of the middle clamping column.

[0025] Figure 6 For the utility model embodiment Figure 2 Front view of the heat sink cover.

[0026] Figure 7 For the utility model embodiment Figure 6 AA section view.

[0027] Figure 8 For the utility model embodiment Figure 2 Enlarged view of part A in .

[0028] In the figure: 1. inductor body; 2. heat dissipation cover; 3. heat dissipation plate; 4. insulating thermal conductive coating; 11. upper cover; 12. middle column; 13. lower cover; 20. silicone limit sleeve; 21. limit hole; 31. elastic clamping piece; 32. clamping spring; 33. clamping column; 34. arc clamping head; 35. limit rib; 41. clamping groove; 42. heat dissipation hole; 111. U-shaped electrode position; 112. hanging groove; 113. positioning clamping edge; 114. limit groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example: Figure 1-Figure 8A moisture-proof heat dissipation patch CD inductor shown in the figure includes an inductor body 1, and the inductor body includes an upper cover 11, a middle column 12 and a lower cover 13. The upper cover 11, the middle column 12 and the lower cover 13 form an "I" shape, and the middle column 12 can be wound with a winding group, which is simple and convenient to install. The upper surface of the upper cover 11 is recessed with at least two parallel U-shaped electrode positions 111, and the front and rear sides of the upper cover 11 are recessed with hanging grooves 112 located between adjacent U-shaped electrode positions 111. The two ends of the winding group can be respectively hung in the two U-shaped electrode positions 111 along the hanging grooves 112. There is a certain distance between the two U-shaped electrode positions 111, so it is not easy to connect them together. Since the winding is generally an arc-shaped line, it can also be better adapted to be set as a U-shaped electrode position 111. The joint of the winding group increases the contact area between the joint and the U-shaped electrode position 111, and it is also convenient to solder the joint in the U-shaped electrode position 111. The upper cover 11 and the lower cover 13 are both provided with positioning clamping edges 113 on both sides of the vertical direction of the hanging groove 112. The outer cover of the inductor body 1 is provided with a heat dissipation cover 2 that forms multi-point limit with the elastic clamping member 31, and the contact between the inductor body 1 and the outside air can be reduced by covering the heat dissipation cover 2, so as to better protect the interior. The surface of the positioning clamping edge 113 of the upper cover 11 is concavely provided with at least one limiting groove 114, and an elastic clamping member 31 is provided in the limiting groove 114. The elastic clamping member 31 includes a clamping spring 32 at one end of which abuts against the limiting groove 114. The spring 32 is sleeved with a clamping column 33, and the clamping column 33 is provided with an arc-shaped clamping head 34. The clamping column 33 is provided with a limiting rib 35 with a diameter larger than the arc-shaped clamping head 34 at one end thereof close to the arc-shaped clamping head 34, and the limiting rib 35 abuts against the end of the clamping spring 32 away from the abutting limiting groove 114. A silicone limiting sleeve 20 is inserted at the opening of the limiting groove 114, and a limiting hole 21 with the same diameter as the arc-shaped clamping head 34 is opened on the silicone limiting sleeve 20. At the same time, the assembly and disassembly of the heat dissipation cover 2 is also extremely simple. It is elastically clamped so as to limit multiple points on the positioning clamping edge 113 of the upper cover 11. It only needs to install the heat dissipation cover 2 in a high temperature and humid working environment to achieve moisture-proof heat dissipation of the chip CD inductor. The internal cross-sectional shape of the heat dissipation cover 2 The shape is the same as the lower cover 13, the top surface of the heat dissipation cover 2 is convexly provided with a plurality of heat dissipation plates 3 arranged horizontally or vertically, the inner surface of the heat dissipation cover 2 opposite to the heat dissipation plate 3 is in contact with the lower cover 13, the inner wall of the heat dissipation cover 2 is sprayed with an insulating thermal conductive coating 4, the insulating thermal conductive coating 4 can be insulated and can also be heat-conducting, the inner wall of the heat dissipation cover 2 is provided with a clamping groove 41 corresponding to the position of the limit groove 114 when the cover is set, and the elastic clamping member 31 is elastically clamped and limited, and the side wall of the heat dissipation cover 2 is provided with a plurality of penetrating heat dissipation holes 42, the heat dissipation holes 42 are tilted on the side wall of the heat dissipation cover 2 with a low outside and a high inside, and the inclination angle of the heat dissipation holes 42 is 45°, and the heat dissipation holes 42 facing the outer wall of the heat dissipation cover 2 are the lower end,The heat dissipation hole 42 is at the high end facing the inner wall of the heat dissipation cover and is inclined at 45 degrees, so that even if there is dust and water vapor, it is not easy to enter the heat dissipation cover 2. At the same time, the inclined setting of the heat dissipation hole 42 can also help to better dissipate heat.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A moisture-proof heat dissipation patch CD inductor, comprising an inductor body (1), wherein the inductor body comprises an upper cover (11), a middle column (12) and a lower cover (13), wherein the upper cover (11), the middle column (12) and the lower cover (13) form an "I" shape, and wherein: The upper surface of the upper cover (11) is recessed with at least two parallel U-shaped electrode positions (111); the front and rear sides of the upper cover (11) are recessed with wire hanging grooves (112) located between adjacent U-shaped electrode positions (111); the upper cover (11) and the lower cover (13) are both provided with positioning edges (113) on both sides of the wire hanging grooves (112) in a vertical direction; the surface of the positioning edge (113) of the upper cover (11) is recessed with at least one limiting groove (114); an elastic clamping piece (31) is provided in the limiting groove (114); the outer cover of the inductor body (1) is provided with a heat dissipation cover (2) that forms a multi-point limit with the elastic clamping piece (31); the side wall of the heat dissipation cover (2) is provided with a plurality of penetrating heat dissipation holes (42); the heat dissipation holes (42) are arranged obliquely on the side wall of the heat dissipation cover (2) with a lower outside and a higher inside.

2. The moisture-proof heat dissipation chip CD inductor according to claim 1, characterized in that: The internal cross-sectional shape of the heat dissipation cover (2) is the same as that of the upper cover (11), and the inner wall of the heat dissipation cover (2) is provided with clamping grooves (41) corresponding to the positions of the limiting grooves (114) for the elastic clamping member (31) to be elastically clamped and limited when the cover is set, at the positions corresponding to the limiting grooves (114).

3. The moisture-proof heat dissipation patch CD inductor according to claim 1, characterized in that: The elastic clamping member (31) comprises a clamping spring (32) with one end abutting against the limiting groove (114); the clamping spring (32) is sleeved with a clamping column (33); the clamping column (33) is provided with an arc-shaped clamping head (34); the clamping column (33) is provided with a limiting rib (35) with a diameter larger than that of the arc-shaped clamping head (34) at one end close to the arc-shaped clamping head (34); the limiting rib (35) abuts against the end of the clamping spring (32) away from the abutting limiting groove (114); a silicone limiting sleeve (20) is inserted into the opening of the limiting groove (114); and a limiting hole (21) with the same diameter as that of the arc-shaped clamping head (34) is provided on the silicone limiting sleeve (20).

4. The moisture-proof heat dissipation patch CD inductor according to claim 1, characterized in that: The inclination angle of the heat dissipation hole (42) is 45°.

5. The moisture-proof heat dissipation patch CD inductor according to claim 2, characterized in that: The top surface of the heat dissipation cover (2) is convexly provided with a plurality of heat dissipation plates (3) arranged horizontally or vertically, and the inner surface of the heat dissipation cover (2) opposite to the heat dissipation plates (3) is in contact with the lower cover (13).

6. The moisture-proof heat dissipation patch CD inductor according to claim 5, characterized in that: The inner wall of the heat dissipation cover (2) is sprayed with an insulating heat-conducting coating (4).

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