Split type ceramic filter

Abstract

The utility model is suitable for the technical field of filters, and provides a split type ceramic filter, which comprises a circuit board, and is characterized in that the circuit board is detachably connected with a mounting plate, the mounting plate is provided with a conductive connecting sheet, and the top of the mounting plate is provided with a filter body; the filter body is electrically connected with the circuit board through the conductive connecting sheet; an inserting strip is mounted at one end of the mounting plate, a mounting groove box matched with the inserting strip is mounted on the circuit board, a preformed hole is formed in one end, far away from the inserting strip, of the mounting plate, a screw hole corresponding to the preformed hole is formed in the circuit board, and the circuit board and the mounting plate are fixedly connected through screws sequentially penetrating through the preformed hole and the screw hole. Therefore, according to the split type ceramic filter, the problem that the ceramic filter is inconvenient to disassemble and assemble is solved through the split design, and the construction speed is greatly increased; on the other hand, due to the split type design, the disassembly and assembly difficulty is reduced, and the maintenance cost is saved in the aspect of labor.

Description

Technical Field

[0001] The utility model is applicable to the technical field of filters and provides a split ceramic filter. Background Art

[0002] The 5G ceramic filter is made of lead zirconate titanate ceramic material. This ceramic material is made into sheets and coated with silver on both sides as electrodes. After DC high-voltage polarization, it has a piezoelectric effect and plays a filtering role. It has the characteristics of stability and good anti-interference performance. It is widely used in 5G signal base stations and other electronic equipment as frequency selection and filtering elements.

[0003] Generally speaking, the service life of ceramic filters ranges from a few years to ten years. When the service life is reached, problems such as signal attenuation, frequency deviation, unstable performance, etc. may occur, which may affect the normal operation of the communication system. Therefore, ceramic filters need to be replaced after a certain period of time to ensure the stability and reliability of the system to the greatest extent.

[0004] 5G ceramic filters are usually installed on circuit boards and connected to them by welding. When disassembling, welding tools are needed to separate them from the circuit boards. This process is very cumbersome. It is also necessary to ensure that you are careful when removing the welding connection to avoid damaging the circuit boards or other components. In addition, the power of the device needs to be turned off before the operation, and the system is shut down. The longer the replacement time, the more inconvenience it will cause to the user. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a split ceramic filter, the purpose is to solve the problems raised in the background technology, the device includes a circuit board, a mounting plate is detachably connected to the circuit board, a conductive connecting piece is installed on the mounting plate, and a filter body is installed on the top of the mounting plate; the filter body is electrically connected to the circuit board through the conductive connecting piece; a plug-in strip is installed at one end of the mounting plate, and a mounting slot box matching the plug-in strip is installed on the circuit board, a reserved hole is provided at one end of the mounting plate away from the plug-in strip, and a screw hole corresponding to the reserved hole is provided on the circuit board, and the circuit board and the mounting plate are fixedly connected by screws that pass through the reserved hole and the screw hole in sequence.

[0006] Furthermore, a plurality of clamping blocks arranged around the filter body are installed on the top of the mounting plate.

[0007] Furthermore, the screws and screw holes are both made of conductive metal material, and the circuit board is provided with leads connected to the screw holes.

[0008] Furthermore, three pins are provided at the bottom of the filter body, and three conductive connecting plates are provided. The three conductive connecting plates respectively include a first contact portion, a second contact portion and a third contact portion corresponding to the three pins, and the first contact portion and the second contact portion are both connected to a conductive plate installed on the connector strip through wires, and the conductive plate is electrically connected to the circuit board. The third contact portion is connected to a conductive ring through a wire, and the conductive ring is abutted against the screw.

[0009] Furthermore, a slot is provided on one side of the installation slot box, and a contact piece is provided on the top of the slot, one end of the contact piece is electrically connected to the circuit board, and the other end of the contact piece is in contact with the conductive connecting piece.

[0010] Furthermore, the contact sheet is a conductive metal sheet that can be elastically deformed.

[0011] Furthermore, the mounting plate is provided with a wire groove corresponding to the conductive connecting piece, and the conductive connecting piece is installed in the wire groove.

[0012] Furthermore, a limiting block is installed on the top of the mounting plate.

[0013] Furthermore, the filter body comprises a ceramic substrate, a mounting groove and a plurality of blind holes are provided on the ceramic substrate, and a metal layer is plated on the surface of the ceramic substrate.

[0014] In summary, the manufacturer first designs the overall layout of the circuit board, and reserves screw holes and mounting slots that match the plug-in strips on the circuit board. In actual use, the split filter body and the mounting plate are first installed together. This process uses mechanical installation equipment or manpower to insert the filter body between several blocks on the mounting plate. At this time, the pins at the bottom of the filter body can be reliably connected to the conductive connecting piece. The limit blocks on the blocks and the mounting plate can play a good limiting role to prevent the filter body from shaking or falling off. The split mounting plate and filter body are stored after installation to facilitate the later installation or replacement of ceramic filters.

[0015] When the assembled ceramic filter needs to be installed on the equipment, first insert the plug-in strip of the mounting plate into the mounting slot box. At this time, the elastic contact piece inside the mounting slot box abuts against the conductive piece on the top of the plug-in strip, so that the pins are electrically connected to the circuit board. Then use screws to pass through the reserved holes and screw holes to fix the mounting plate. This process can make the third contact part electrically connected to the circuit board, thereby realizing the connection between the three pins of the filter body and the circuit board.

[0016] Therefore, the split ceramic filter solves the problem that the ceramic filter is difficult to disassemble through its unique split design; on the one hand, it can achieve quick disassembly and installation when replacing the ceramic filter on site, transferring most of the operation time to the manufacturer, greatly improving the construction speed; on the other hand, this design greatly reduces the difficulty of operation, even non-technical personnel can replace the filter under simple guidance, saving maintenance costs in labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the connection between the ceramic filter and the circuit board;

[0018] Figure 2 This is the exploded diagram of the ceramic filter structure;

[0019] Figure 3 It is a schematic diagram of the bottom structure of the filter body;

[0020] Figure 4 It is the top view of the ceramic filter;

[0021] Figure 5 for Figure 5 AA direction cross-sectional view;

[0022] Figure 6 for Figure 6 A magnified view of the structure of part B;

[0023] Figure 7 is a schematic diagram of the conductive connecting piece structure;

[0024] Figure 8 It is a schematic diagram of the mounting plate structure;

[0025] In the figure: 01-circuit board; 011-lead; 1-filter body; 11-ceramic substrate; 12-mounting slot; 13-blind hole; 14-pin; 2-mounting plate; 21-block; 22-wire slot; 23-reserved hole; 24-limiting block; 25-plug strip; 3-conductive connecting piece; 31-first contact part; 32-second contact part; 33-third contact part; 34-conductive piece; 35-conductive ring; 4-mounting slot box; 41-slot; 42-abutment piece. DETAILED DESCRIPTION

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] 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.

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] See also Figure 1-8 The purpose of the utility model is to provide a split ceramic filter, including a mounting plate 2 detachably connected to a circuit board 01, and a filter body 1 detachably connected to the top of the mounting plate 2.

[0031] A plug strip 25 is fixedly connected to one end of the mounting plate 2, and a mounting slot box 4 matching the plug strip 25 is fixedly connected to the circuit board 01, and the plug strip 25 can be inserted into the mounting slot box 4. A reserved hole 23 is provided at one end of the mounting plate 2 away from the plug strip 25, and a screw hole corresponding to the reserved hole 23 is provided on the circuit board 01. The reserved hole 23 on the mounting plate 2 and the screw hole on the circuit board 01 can be fixedly connected by a screw. Specifically, the screw is made of conductive metal, and the screw hole is a copper metal hole, which is connected to a lead 011 connected to the screw hole provided on the circuit board 01.

[0032] A plurality of blocks 21 are fixedly connected to the top of the mounting plate 2. The plurality of blocks 21 are arranged around the filter body 1. The blocks 21 can be elastically deformed under the action of external force. Specifically, a chamfer is provided on the top of the block 21 close to the filter body 1. When the filter body 1 is pressed downward, the downward movement trend of the filter body 1 causes force to act on the block 21. The block 21 is elastically deformed, so that the filter body 1 is stuck between the plurality of blocks 21. Then the block 21 returns to its original shape, and the filter body 1 is stuck.

[0033] A pin 14 is provided at the bottom of the filter body 1 , a conductive connecting piece 3 is fixedly connected to the mounting plate 2 , and the pin 14 is electrically connected to the conductive connecting piece 3 .

[0034] Therefore, a split ceramic filter of the present technical solution can well solve the problem that the ceramic filter is not easy to disassemble. The specific process of its use, production and installation is as follows: cooperate with the electronic manufacturer to carry out the overall layout design of the circuit board 01, reserve screw holes and the installation slot box 4 that matches the plug-in strip 25 on the circuit board 01. The split filter body 1 and the mounting plate 2 are installed together for storage, which is convenient for the later installation or replacement of the ceramic filter. During installation, first insert the plug-in strip 25 of the mounting plate 2 into the mounting slot box 4. At this time, the elastic metal conductor inside the mounting slot box 4 is electrically connected to the conductive connecting piece 3 on the mounting plate 2. Then use screws to pass through the reserved holes 23 and the screw holes to fix the mounting plate 2.

[0035] See also Figure 2 , 3, 7, 8, preferably, the filter body 1 includes a ceramic substrate 11, and a mounting groove 12 and a plurality of blind holes 13 are provided on the ceramic substrate 11. The blind hole 13 is for transmitting signals of different bands, and the mounting groove 12 is used to set electrodes for introduction or extraction. The surface of the ceramic substrate 11 is plated with a metal layer, and the ceramic filter of this structure has a piezoelectric effect after DC high voltage polarization, thereby realizing the sequential conversion of electrical signals, mechanical vibrations, and electrical signals, thereby realizing its function. Three pins 14 are provided at the bottom of the filter body 1, and three conductive connecting pieces 3 are provided on the top of the mounting plate 2, respectively including a first contact portion 31, a second contact portion 32 and a third contact portion 33, the first contact portion 31 and the second contact portion 32 are both connected to a conductive piece 34 through a wire, the conductive piece 34 is electrically connected to the circuit board 01, and the third contact portion 33 is connected to a conductive ring 35 through a wire; the first contact portion 31, the second contact portion 32 and the third contact portion 33 are respectively abutted against the three pins 14 at the bottom of the ceramic substrate 11. Specifically, the three pins 14 at the bottom of the ceramic substrate 11 are the input end, output end and ground end of the ceramic filter respectively. The input end and the output end correspond to the first contact part 31 and the second contact part 32 respectively, and the ground end corresponds to the third contact part 33. The conductive ring 35 connected to the third contact part 33 is electrically connected to the copper screw hole on the circuit board 01 through a screw, thereby playing the role of a grounding connection.

[0036] See also Figure 2 and Figure 4-6 Preferably, a slot 41 is provided on one side of the installation slot box 4 for inserting the plug strip 25, and a contact piece 42 is provided on the top of the slot 41. The contact piece 42 is a conductive metal piece, and the contact piece 42 is connected to the circuit on the circuit board 01, and the contact piece 42 can contact the conductive connecting piece 3. Specifically, two conductive pieces 34 are provided on the plug strip 25, and two contact pieces 42 are provided and can be elastically deformed. When the plug strip 25 is inserted, the two conductive pieces 34 can press the contact piece 42 upward.

[0037] Preferably, the mounting plate 2 is provided with a wire slot 22 corresponding to the conductive connecting piece 3, and the conductive connecting piece 3 is fixedly connected in the wire slot 22. A limit block 24 is installed on the top of the mounting plate 2, and the limit block 24 can limit the filter body 1.

[0038] Preferably, the top edge of the slot 41 is provided with a chamfer, and the chamfer can facilitate the insertion of the plug-in strip 25 into the slot 41 for easy installation.

[0039] In summary, the manufacturer first designs the overall layout of the circuit board 01, and reserves screw holes and a mounting slot box 4 that matches the plug-in strip 25 on the circuit board 01. In actual use, the split filter body 1 and the mounting plate 2 are first installed together. In this process, mechanical installation equipment or manpower is used to clamp the filter body 1 between several clamping blocks 21 on the mounting plate 2. At this time, the pins 14 at the bottom of the filter body 1 can be reliably connected to the conductive connecting piece 3, and the clamping block 21 and the limit block 24 on the mounting plate 2 can play a good limiting role to prevent the filter body 1 from shaking or falling off.

[0040] The separate mounting plate 2 and the filter body 1 are installed and stored to facilitate the later installation or replacement of the ceramic filter.

[0041] When the assembled ceramic filter needs to be installed on the device, first insert the plug-in strip 25 of the mounting plate 2 into the mounting slot box 4. At this time, the elastic abutment sheet 42 inside the mounting slot box 4 abuts against the conductive sheet 34 on the top of the plug-in strip 25, so that the pins 14 are electrically connected to the circuit board 01. Then, screws are used to pass through the reserved holes 23 and the screw holes to fix the mounting plate 2. This process can electrically connect the third contact portion 33 to the circuit board 01, thereby connecting the three pins 14 of the filter body 1 to the circuit board 01.

[0042] Therefore, the split ceramic filter solves the problem that the ceramic filter is difficult to disassemble through its unique split design; on the one hand, it can achieve quick disassembly and installation when replacing the ceramic filter on site, transferring most of the operation time to the manufacturer, greatly improving the construction speed; on the other hand, this design greatly reduces the difficulty of operation, even non-technical personnel can replace the filter under simple guidance, saving maintenance costs in labor.

[0043] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A split ceramic filter, comprising a circuit board (01), characterized in that: The circuit board (01) is detachably connected to a mounting plate (2), a conductive connecting piece (3) is mounted on the mounting plate (2), and a filter body (1) is mounted on the top of the mounting plate (2); the filter body (1) is electrically connected to the circuit board (01) via the conductive connecting piece (3); A plug-in strip (25) is installed at one end of the mounting plate (2); a mounting slot box (4) that matches the plug-in strip (25) is installed on the circuit board (01); a reserved hole (23) is provided at one end of the mounting plate (2) away from the plug-in strip (25); a screw hole corresponding to the reserved hole (23) is provided on the circuit board (01); the circuit board (01) and the mounting plate (2) are fixedly connected by screws that pass through the reserved hole (23) and the screw hole in sequence.

2. The split-type ceramic filter according to claim 1, characterized in that: A plurality of clamping blocks (21) arranged around the filter body (1) are installed on the top of the mounting plate (2).

3. The split-type ceramic filter according to claim 1, wherein: The screws and screw holes are both made of conductive metal, and the circuit board (01) is provided with leads (011) connected to the screw holes.

4. The split-type ceramic filter according to claim 3, characterized in that: The bottom of the filter body (1) is provided with three pins (14), and the conductive connecting pieces (3) are provided with three. The three conductive connecting pieces (3) respectively include a first contact portion (31), a second contact portion (32), and a third contact portion (33) corresponding to the three pins (14) and abutting against each other. The first contact portion (31) and the second contact portion (32) are both connected to a conductive piece (34) mounted on a connector strip (25) via a wire. The conductive piece (34) is electrically connected to a circuit board (01). The third contact portion (33) is connected to a conductive ring (35) via a wire. The conductive ring (35) abuts against a screw.

5. The split-type ceramic filter according to claim 1, characterized in that: A slot (41) is provided on one side of the installation slot box (4), and a contact piece (42) is provided on the top of the slot (41). One end of the contact piece (42) is electrically connected to the circuit board (01), and the other end contacts the conductive connecting piece (3).

6. The split-type ceramic filter according to claim 5, characterized in that: The contact piece (42) is a conductive metal piece that can be elastically deformed.

7. The split-type ceramic filter according to claim 1, characterized in that: The mounting plate (2) is provided with a wire groove (22) corresponding to the conductive connecting piece (3), and the conductive connecting piece (3) is installed in the wire groove (22).

8. The split-type ceramic filter according to claim 1, characterized in that: A limiting block (24) is installed on the top of the mounting plate (2).

9. The split-type ceramic filter according to claim 1, characterized in that: The filter body (1) comprises a ceramic base (11), a mounting groove (12) and a plurality of blind holes (13) are provided on the ceramic base (11), and the surface of the ceramic base (11) is plated with a metal layer.

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