Embedded ceramic capacitor

Abstract

The utility model discloses an embedded ceramic capacitor, which comprises a horizontally placed insulating body made of a ceramic material, an upper electrode block and a lower electrode block which are symmetrically and fixedly arranged on the upper end surface and the lower end surface of the insulating body respectively, and a sheet-shaped conductive upper electrode output strip and a sheet-shaped conductive lower electrode output strip, the inner end of the upper electrode output strip is welded to the upper wall of the upper electrode block, the outer end of the upper electrode output strip extends to the outer side of the insulating body and then horizontally extends outwards to form an upper welding piece, and the inner end of the lower electrode output strip is welded to the lower wall of the lower electrode block. The outer end of the lower electrode output strip extends to the outer side of the insulating body and then horizontally extends outwards to form a lower welding piece. The capacitor is embedded into a mounting hole formed in the circuit board, so that the capacitor is not exposed outside a panel of the circuit board, the flattening of the circuit board is realized to the greatest extent, and the miniaturization of the circuit board is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic component field, in particular to a kind of embedded ceramic capacitor. BACKGROUND

[0002] Capacitor is the common component on circuit board, and the two electrodes of present ceramic capacitor are respectively led out with pin, and the corresponding insertion hole is set on circuit board, pin passes through the corresponding insertion hole from one side of circuit board, and is welded and fixed on the other side of circuit board.The installation process of the plug-in ceramic capacitor is complex, and the space is relatively large, which is not conducive to the flatness and miniaturization of circuit board. SUMMARY

[0003] The utility model discloses a kind of embedded ceramic capacitors to solve the above problems.

[0004] The utility model discloses the above-mentioned purposes are realized by the following technical solutions:

[0005] A kind of embedded ceramic capacitor, including horizontally placed ceramic material's insulating body, the upper electrode block and the lower electrode block respectively symmetrically fixed on the upper and lower ends of the insulating body, it also includes the upper electrode output strip and the lower electrode output strip, which are sheet-shaped and conductive, the inner end of the upper electrode output strip is welded to the upper wall of the upper electrode block, the outer end of the upper electrode output strip extends to the outside of the insulating body and then extends horizontally outward to form an upper welding tab, the inner end of the lower electrode output strip is welded to the lower wall of the lower electrode block, and the outer end of the lower electrode output strip extends to the outside of the insulating body and then extends horizontally outward to form a lower welding tab.

[0006] Preferably, the length direction of the upper electrode output strip passes through the center of the upper wall of the upper electrode block, the length direction of the lower electrode output strip passes through the center of the lower wall of the lower electrode block, and the included angle between the upper electrode output strip and the lower electrode output strip is greater than 90 degrees and less than or equal to 180 degrees.

[0007] Preferably, the included angle between the upper electrode output strip and the lower electrode output strip is equal to 180 degrees.

[0008] Preferably, the length direction of the upper electrode output strip passes through the outside of the center of the upper wall of the upper electrode block, and the length direction of the lower electrode output strip passes through the outside of the center of the lower wall of the lower electrode block.

[0009] Preferably, the upper electrode output strip and the lower electrode output strip are parallel to each other.

[0010] Preferably, the utility model also includes the outer protective layer of insulation, the outer protective layer is wrapped in the insulation body, upper electrode piece, lower electrode piece, the inner end of upper electrode output strip and the inner end of lower electrode output strip outside.

[0011] Preferably, the upper electrode output strip and the lower electrode output strip are flat.

[0012] Preferably, the outer end of the upper electrode output strip stretches to the outside of the insulation body and is first bent downward and then extends horizontally outward to form the upper welding piece, and the outer end of the lower electrode output strip stretches to the outside of the insulation body and is first bent upward and then extends horizontally outward to form the lower welding piece.

[0013] Compared with the prior art, the utility model is embedded into the mounting hole of the circuit board, so that the capacitor is not exposed outside the panel of the circuit board, the flatness of the circuit board installation is maximized, and the miniaturization of the circuit board is more beneficial. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0015] Figure 1 It is the structure diagram of one angle of the first embodiment of the utility model;

[0016] Figure 2 It is the structure diagram of another angle of the first embodiment of the utility model;

[0017] Figure 3 It is the structure principle diagram of the first embodiment of the utility model installed to the circuit board;

[0018] Figure 4 It is the structure diagram of one angle of the second embodiment of the utility model;

[0019] Figure 5 It is the structure diagram of another angle of the second embodiment of the utility model;

[0020] Figure 6 It is the structure principle diagram of the second embodiment of the utility model installed to the circuit board;

[0021] Figure 7 It is the structure diagram of one angle of the third embodiment of the utility model;

[0022] Figure 8The third embodiment of the utility model is another angle structural view. DETAILED DESCRIPTION

[0023] In the description of the utility model, it need to understand that, the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or position relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0024] In the description of the utility model, it need to understand that, the terms "mounting", "connection", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0025] The utility model will be further described below in combination with the drawings:

[0026] Reference Figures 1 to 3 The utility model discloses an embedded ceramic capacitor, which comprises a horizontal ceramic insulating body 10, an upper electrode block 20, a lower electrode block 30, a sheet-shaped and conductive upper electrode output strip 40, a sheet-shaped and conductive lower electrode output strip 50 and an outer protective layer (not shown in the figure).

[0027] The upper electrode block 20 and the lower electrode block 30 are symmetrically fixed to the upper and lower end faces of the insulating body 10 respectively. The inner end of the upper electrode output strip 40 is welded to the upper wall of the upper electrode block 20, and the outer end of the upper electrode output strip 40 extends to the outside of the insulating body 10 and then extends horizontally outward to form an upper welding sheet 41. The inner end of the lower electrode output strip 50 is welded to the lower wall of the lower electrode block 30, and the outer end of the lower electrode output strip 50 extends to the outside of the insulating body 10 and then extends horizontally outward to form a lower welding sheet 51. The outer protective layer is wrapped outside the insulating body 10, the upper electrode block 20, the lower electrode block 30, the inner end of the upper electrode output strip 40 and the inner end of the lower electrode output strip 50. In this embodiment, the outer protective layer is epoxy resin. The upper electrode output strip 40 and the lower electrode output strip 50 are both iron sheets.

[0028] Specifically, the central axis section of the length direction of the upper electrode output strip 40 passes through the center of the upper electrode block 20, the central axis section of the length direction of the lower electrode output strip 50 passes through the center of the lower electrode block 30, and the included angle between the upper electrode output strip 40 and the lower electrode output strip 50 is 180 degrees. The upper electrode output strip 40 and the lower electrode output strip 50 are both flat. It should be noted that the included angle between the upper electrode output strip 40 and the lower electrode output strip 50 can also be a suitable angle greater than 90 degrees and less than or equal to 180 degrees.

[0029] In use, the mounting hole 210 is formed on the double-sided circuit board 200, the lower solder mask layer 220 is hollowed out on the outside of the mounting hole 210 to expose the lower copper circuit 230 to form a lower solder pad 231, and the upper solder mask layer 240 is hollowed out on the outside of the mounting hole to expose the upper copper circuit 250 to form an upper solder pad 251. The utility model is installed in the mounting hole 210, the bottom of the upper welding sheet 41 is pressed against the upper solder pad 251 and is fixed by solder paste welding, and the top of the lower welding sheet 51 is pressed against the lower solder pad 231 and is fixed by solder paste welding.

[0030] Reference Figures 4 to 6Unlike the first embodiment, the outer end of the upper electrode output strip 40 extends to the outside of the insulating body 10 and is first bent downward and then extends horizontally outward to form the upper solder tab 41, and the outer end of the lower electrode output strip 50 extends to the outside of the insulating body 10 and is first bent upward and then extends horizontally outward to form the lower solder tab 51. When the embodiment is used, a mounting hole 310 is formed on the single-sided circuit board 300, the lower solder resist layer 320 is hollowed out on the outside of the mounting hole 310 to expose the copper circuit 330 to form a lower solder pad 331, the upper solder resist layer 340 is hollowed out on the outside of the mounting hole 310 to expose the copper circuit 330 to form an upper solder pad 332, the utility model is mounted into the mounting hole 310, the bottom of the upper solder tab 41 is pressed against the upper solder pad 332 and is fixed by soldering through the tin paste, and the top of the lower solder tab 51 is pressed against the lower solder pad 331 and is fixed by soldering through the tin paste.

[0031] Reference Figure 7 And Figure 8 Unlike the first embodiment, the central axis section of the length direction of the upper electrode output strip 40 passes outside the center of the upper electrode block 20, and the central axis section of the length direction of the lower electrode output strip 50 passes outside the center of the lower electrode block 30. The upper electrode output strip 40 and the lower electrode output strip 50 are parallel to each other. The upper electrode output strip 40 and the lower electrode output strip 50 are both flat. The installation of the present embodiment is similar to that of the first embodiment, and will not be described here. It should be noted that the included angle between the upper electrode output strip 40 and the lower electrode output strip 50 can also be any suitable angle between 90 degrees and 180 degrees. In addition, similar to the second embodiment, the outer end of the upper electrode output strip 40 can also be first bent downward and then extend horizontally outward to form the upper solder tab 41 after extending to the outside of the insulating body 10, and the outer end of the lower electrode output strip 50 can also be first bent upward and then extend horizontally outward to form the lower solder tab 51 after extending to the outside of the insulating body 10. At this time, the installation and use of the utility model are similar to those of the second embodiment, and will not be described here.

[0032] The utility model is embedded and installed into the mounting hole formed on the circuit board, so that the capacitor is no longer exposed outside the panel of the circuit board, and the flatness of the circuit board installation is maximized, which is more conducive to the miniaturization of the circuit board.

[0033] It should be noted that the upper electrode output strip 40 and the lower electrode output strip 50 can also be copper sheets or tin sheets; and the outer protective layer can also be other suitable insulating materials for protection in addition to epoxy resin.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An embedded ceramic capacitor, comprising a horizontally placed insulating body made of ceramic material, and an upper electrode block and a lower electrode block respectively symmetrically fixed to the upper and lower end faces of the insulating body, characterized in that: It also includes an upper electrode output strip and a lower electrode output strip, both of which are sheet-like and conductive. The inner end of the upper electrode output strip is welded to the upper wall of the upper electrode block, and the outer end of the upper electrode output strip extends to the outside of the insulating body and then extends horizontally outward to form an upper welding sheet. The inner end of the lower electrode output strip is welded to the lower wall of the lower electrode block, and the outer end of the lower electrode output strip extends to the outside of the insulating body and then extends horizontally outward to form a lower welding sheet.

2. An embedded ceramic capacitor according to claim 1, characterized in that: The central axial section of the upper electrode output bar passes through the center of the upper wall of the upper electrode block, and the central axial section of the lower electrode output bar passes through the center of the lower wall of the lower electrode block. The angle between the upper electrode output bar and the lower electrode output bar is greater than 90 degrees and less than or equal to 180 degrees.

3. An embedded ceramic capacitor according to claim 2, characterized in that: The angle between the upper electrode output bar and the lower electrode output bar is 180 degrees.

4. An embedded ceramic capacitor according to claim 1, characterized in that: The central axial section of the upper electrode output strip passes through the outer side of the center of the upper wall of the upper electrode block, and the central axial section of the lower electrode output strip passes through the outer side of the center of the lower wall of the lower electrode block.

5. An embedded ceramic capacitor according to claim 4, characterized in that: The upper electrode output bar and the lower electrode output bar are parallel to each other.

6. An embedded ceramic capacitor according to claim 1, characterized in that: It also includes an insulating outer protective layer, which wraps around the inner end of the insulating body, the upper electrode block, the lower electrode block, the upper electrode output bar, and the lower electrode output bar.

7. An embedded ceramic capacitor according to claim 1, characterized in that: Both the upper electrode output bar and the lower electrode output bar are straight.

8. An embedded ceramic capacitor according to claim 1, characterized in that: The outer end of the upper electrode output strip extends to the outside of the insulating body, then bends downward and then extends horizontally outward to form the upper welding piece. The outer end of the lower electrode output strip extends to the outside of the insulating body, then bends upward and then extends horizontally outward to form the lower welding piece.

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