An adjustable power divider

Abstract

The present invention belongs to the technical field of power dividers, and in particular, relates to an adjustable power divider, including a shell, a cavity is arranged in the shell, a substrate is arranged in the cavity, a plurality of first support rods are vertically supported at the bottom of the substrate, the first support rods are vertically fixedly connected to the inner wall of the bottom of the cavity, and a plurality of first fixing screws are vertically rotated and inserted through the top of the substrate. The present invention is provided with a clamping assembly, and when the resistor is damaged and needs to be replaced during the use of the power divider, the clamping assembly can be disassembled by unscrewing the two second fixing screws, and then the resistor can be replaced without the help of an electric soldering iron. Compared with the existing welding method, the efficiency and convenience of replacing the resistor are improved, and at the same time, the damage to the resistor or microstrip line caused by the high-temperature soldering iron tip during the traditional installation process can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of power dividers, and in particular relates to an adjustable power divider. Background Art

[0002] A power divider, also known as a power distributor, is a passive device used to distribute input signals to multiple output ports in a certain proportion. It is usually composed of microstrip lines, couplers, isolators, resistors, etc., and has the characteristics of low loss and high isolation. Power dividers are widely used in wireless communications, radars, satellite communications and other fields. It can divide the input signal into multiple output signals of different frequencies and has important signal processing functions.

[0003] The resistors in the existing power dividers are mainly connected to the microstrip line by welding. During long-term use, when the resistor is damaged, it is necessary to use a soldering iron to remove the damaged resistor from the microstrip line. This is troublesome for some outdoor maintenance in the absence of power supply. In addition, when using a soldering iron to solder the resistor, the high-temperature soldering iron tip may also damage the resistor or the microstrip line.

[0004] Therefore, it is necessary to invent an adjustable power divider to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides an adjustable power divider to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable power divider, comprising a shell, a cavity is arranged in the shell, a substrate is arranged in the cavity, a plurality of first support rods are vertically supported at the bottom of the substrate, the first support rods are vertically fixedly connected to the inner wall of the bottom of the cavity, a plurality of first fixing screws are vertically rotated through the top of the substrate, the plurality of first fixing screws are threadedly inserted in the tops of the plurality of first support rods, two microstrip lines are symmetrically arranged on the top of the substrate, and the two microstrip lines are both S-shaped, one end of the two microstrip lines is connected together to form an input end, and the two microstrip lines are connected together to form an input end. The other end of the line forms an output end respectively, the output end is connected to a first feeding connector, the output end is connected to a second feeding connector, and the first feeding connector and the second feeding connector are fixedly inserted into the shell, a plurality of resistors are evenly arranged between the two microstrip lines, and the plurality of resistors are located on the symmetry axis of the two microstrip lines, metal pins are arranged on both sides of the resistor, a U-shaped pressing groove is provided at the position where the top of the microstrip line contacts the metal pin of the resistor, and the metal pin of the resistor is located in the U-shaped pressing groove, the same clamping assembly is arranged on the top of the metal pins on the same side of the plurality of resistors, and a cover plate is detachably installed on the bottom of the shell.

[0007] The top of the two pressure rods is fixedly connected with a pressure plate, and the bottom ends of the two pressure rods are respectively protruded in the direction away from the strip box, and the bottom ends of the two pressure plates are respectively provided with a second support rod, the second support rod is vertically fixedly connected to the inner wall of the bottom of the cavity, and the outward protruding parts of the bottom ends of the two pressure plates are vertically rotated and penetrated with a second fixing screw, and the second fixing screw is threadedly inserted into the top of the second support rod.

[0008] Furthermore, a water injection hole is provided at the front end of the strip box, a sealing plug is inserted at the water injection hole, the strip box is filled with coolant, a plurality of metal heat conductive plates are fixedly connected to the bottom of the strip box, and the plurality of metal heat conductive plates are respectively attached to the tops of a plurality of resistors, and a plurality of heat dissipating fins are fixedly connected in parallel on both sides of the strip box.

[0009] Furthermore, a mounting groove matching the shape of the microstrip line, the input end and the output end is opened on the top of the substrate, and the microstrip line, the input end and the output end are installed in the mounting groove.

[0010] Furthermore, a common insulating gasket is provided at the bottom of the multiple resistors, a strip groove matching the gasket is opened at the top of the substrate, the gasket is installed in the strip groove, and a plurality of groups of bow-shaped spring clips are fixedly connected to the top of the gasket, and the number of bow-shaped spring clips in each group is two. The plurality of groups of bow-shaped spring clips are respectively opposite to the multiple resistors, and the two bow-shaped spring clips in each group are respectively attached to the front and rear sides of the corresponding resistor, and the top of the bow-shaped spring clip is lower than the top of the resistor.

[0011] Furthermore, the pressing sheet and the pressure strip are both made of insulating materials, and the width of the pressure strip is smaller than the width of the pressing sheet.

[0012] Furthermore, a protective pad is fixedly connected to the position where the inner side of the top of the pressing plate contacts the strip box, and the width of the protective pad is greater than the width of the strip box.

[0013] Furthermore, the resistor metal pin is located between two limiting rods at the bottom of the pressing sheet, and the length of the limiting rod is greater than the sum of the thicknesses of the substrate, the pressing sheet, the metal pin and the microstrip line.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention is provided with a clamping assembly. When the resistor is damaged and needs to be replaced during the use of the power divider, the clamping assembly can be disassembled by simply unscrewing the two second fixing screws. Then, the resistor can be replaced without the help of an electric soldering iron. Compared with the existing welding method, the efficiency and convenience of resistor replacement are improved, and the damage to the resistor or microstrip line caused by the high-temperature soldering iron tip during the traditional installation process can also be avoided.

[0016] 2. The present invention is provided with a strip box. When the heat conducting sheet at the bottom of the strip box is pressed together with the top of the resistor, the heat generated during the operation of the resistor can be transferred to the strip box through the metal heat conducting sheet, so that the heat generated by the resistor is absorbed by the coolant in the strip box, thereby preventing the heat generated by the resistor from being transferred to the microstrip line, thereby ensuring the working stability of the present invention;

[0017] 3. The present invention is provided with a bow-shaped spring piece, and when the resistor is installed between two microstrip lines, the bow-shaped spring piece can be used to temporarily fix the resistor, thereby ensuring that the resistor will not move at will when the metal pins of the resistor are pressed by the pressing sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a three-dimensional schematic diagram of the housing and its internal structure in the present invention;

[0020] Figure 3 It is a three-dimensional schematic diagram of the substrate and its top structure in the present invention;

[0021] Figure 4 It is a three-dimensional schematic diagram of the substrate, microstrip line, resistor and gasket in the present invention;

[0022] Figure 5 It is a three-dimensional schematic diagram of the gasket, resistor, metal pin and bow-shaped spring in the present invention;

[0023] Figure 6 is a three-dimensional schematic diagram of the substrate in the present invention;

[0024] Figure 7 It is a three-dimensional schematic diagram of a part of the pressing assembly in the present invention;

[0025] Figure 8 It is a three-dimensional schematic diagram of the strip box, sealing plug, metal heat conductive sheet and heat dissipation fins in the present invention;

[0026] Fig. 9It is a three-dimensional schematic diagram of the pressure plate and the protective pad in the present invention.

[0027] In the figure: 1, shell; 2, substrate; 3, first support rod; 4, first fixing screw; 5, microstrip line; 6, input end; 7, output end; 8, first feed connector; 9, second feed connector; 10, resistor; 11, metal pin; 12, U-shaped pressing groove; 13, clamping assembly; 131, pressing sheet; 132, limiting rod; 133, pressing strip; 134, sleeve; 135, pressing rod; 136, pressing spring; 137, connecting plate; 138, strip box; 139, pressing plate; 140, second support rod; 141, second fixing screw; 14, cover plate; 15, sealing plug; 16, metal thermal conductive sheet; 17, heat sink fin; 18, mounting groove; 19, gasket; 20, strip groove; 21, bow-shaped spring; 22, protective pad. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] The present invention provides Figures 1 to 9 The adjustable power divider shown in the figure comprises a shell 1, a cavity is arranged in the shell 1, a substrate 2 is arranged in the cavity, a plurality of first support rods 3 are vertically supported at the bottom of the substrate 2, the first support rods 3 are vertically fixedly connected to the inner wall of the bottom of the cavity, a plurality of first fixing screws 4 are vertically rotated and inserted through the top of the substrate 2, and the plurality of first fixing screws 4 are threadedly inserted in the tops of the plurality of first support rods 3 one by one, two microstrip lines 5 are symmetrically arranged on the top of the substrate 2, and the two microstrip lines 5 are both S-shaped, one end of the two microstrip lines 5 is connected together to form an input end 6, and the other ends of the two microstrip lines 5 respectively form output ends 7, the output end 7 is connected to a first feeding connector 8, the output end 7 is connected to a second feeding connector 9, and the first feeding connector 8 is connected to the output end 7. The connector 8 and the second feeding connector 9 are both fixedly inserted through the housing 1, and a plurality of resistors 10 are evenly arranged between the two microstrip lines 5, and the plurality of resistors 10 are located on the symmetry axis of the two microstrip lines 5, and metal pins 11 are arranged on both sides of the resistors 10, and a U-shaped pressing groove 12 is provided at the position where the top of the microstrip line 5 contacts the metal pin 11 of the resistor 10, and the metal pin 11 of the resistor 10 is located in the U-shaped pressing groove 12, and the top of the metal pins 11 on the same side of the plurality of resistors 10 is provided with the same pressing assembly 13, and a cover plate 14 is detachably installed at the bottom of the housing 1, and a mounting groove 18 matching the shape of the microstrip line 5, the input end 6 and the output end 7 is provided at the top of the substrate 2, and the microstrip line 5, the input end 6 and the output end 7 are installed in the mounting groove 18;

[0030] The clamping assembly 13 includes a U-shaped pressing piece 131 that matches the U-shaped pressing groove 12, and the bottom of the pressing piece 131 is vertically fixedly connected to two limiting rods 132, and the bottom ends of the limiting rods 132 slide vertically and penetrate and are inserted into the U-shaped pressing groove 12 and the base plate 2. A same pressure strip 133 is fixedly connected between the tops of multiple pressing pieces 131, and two sleeves 134 are vertically fixedly connected to the top of the pressure strip 133. A pressure rod 135 is vertically slidably inserted into the top of the sleeve 134, and a compression spring 136 is fixedly connected between the bottom ends of the pressure rods 135 and the bottom inner wall of the sleeve 134. A connecting plate 137 is fixedly connected between the top ends of the two pressure rods 135, and a same strip box 138 is fixedly connected between the connecting plates 137 in the two clamping assemblies 13. The top of the strip box 138 is pressed by a U-shaped pressure plate 139, and the bottoms of the two ends of the pressure plate 139 are respectively moved away from The strip box 138 protrudes in the direction of the strip box 138, and a second support rod 140 is provided at a position opposite to the bottom of the substrate 2 and the bottom of the two ends of the pressing plate 139. The second support rod 140 is vertically fixedly connected to the inner wall of the bottom of the cavity. The parts of the bottom of the two ends of the pressing plate 139 that protrude outward are vertically rotated and penetrated with second fixing screws 141. The second fixing screws 141 are threadedly inserted into the top of the second support rod 140. The pressing sheet 131 and the pressure strip 133 are both made of insulating materials, and the width of the pressure strip 133 is smaller than the width of the pressing sheet 131. A protective pad 22 is fixedly connected to the position where the inner side of the top of the pressing plate 139 contacts the strip box 138, and the width of the protective pad 22 is greater than the width of the strip box 138. The metal pin 11 of the resistor 10 is located between the two limit rods 132 at the bottom of the pressing sheet 131, and the length of the limit rod 132 is greater than the sum of the thicknesses of the substrate 2, the pressing sheet 131, the metal pin 11 and the microstrip line 5.

[0031] When installing the resistor 10, first remove the clamping assembly 13, then place the multiple resistors 10 to be installed between the two adjacent U-shaped pressing grooves 12 on the two microstrip lines 5 in sequence, and make the metal pins 11 on both sides of the resistor 10 respectively located in the two opposite U-shaped pressing grooves 12, then place the strip box 138 on the top of the multiple resistors 10, and make the limit rod 132 at the bottom of the pressing sheet 131 plug into the U-shaped pressing groove 12, at this time, the metal pins 11 of the multiple resistors 10 can be pressed by the multiple pressing sheets 131, and the strip box 138 is suspended on the top of the resistor 10 under the support of the multiple clamping springs 136, at this time, place the pressing plate 139 for locking and fixing on the top of the strip box 138, and make the protective pad 22 keep in contact with the top of the strip box 138, then press down the position where the pressing plate 139 contacts the strip box 138, so that The strip box 138 moves downward under the pressure of the pressure plate 139, and as the strip box 138 moves downward, the strip box 138 can drive the pressure rod 135 to move downward and compress the pressure spring 136 through the connecting plate 137, and as the pressure spring 136 is compressed, the pressure of the pressure spring 136 on the pressure strip 133 gradually increases, so that the pressing sheet 131 cooperates with the U-shaped pressing groove 12 to press the metal pin 11 of the resistor 10 under the pressure of the pressure strip 133. When the bottoms of both sides of the pressing plate 139 are attached to the top of the substrate 2, the pressing plate 139 is connected to the substrate 2 by two second fixing screws 141, so that the pressing plate 139 can press and fix the strip box 138, and multiple resistors 10 can also be connected between the two microstrip lines 5 under the pressure of the pressing sheet 131 on its metal pin 11.

[0032] When the resistor 10 is damaged and needs to be replaced during the use of the power divider, the two second fixing screws 141 need only be unscrewed to achieve the disassembly operation of the clamping assembly 13, and then the resistor 10 can be replaced without the help of an electric soldering iron. Compared with the existing welding method, the efficiency and convenience of replacing the resistor 10 are improved, and at the same time, the damage to the resistor 10 or the microstrip line 5 caused by the high-temperature soldering iron tip during the traditional installation process can be avoided.

[0033] like Figure 3 and Figure 8 As shown, a water injection hole is opened at the front end of the strip box 138, and a sealing plug 15 is inserted at the water injection hole. The strip box 138 is filled with coolant, and a plurality of metal heat conductive sheets 16 are fixedly connected to the bottom of the strip box 138, and the plurality of metal heat conductive sheets 16 are respectively attached to the tops of the plurality of resistors 10, and a plurality of heat dissipating fins 17 are fixedly connected in parallel on both sides of the strip box 138;

[0034] By providing the strip box 138, when the heat conductive sheet at the bottom of the strip box 138 is pressed together with the top of the resistor 10, the heat generated by the resistor 10 during operation can be transferred to the strip box 138 through the metal heat conductive sheet 16, so that the heat generated by the resistor 10 can be absorbed by the coolant in the strip box 138, thereby preventing the heat generated by the resistor 10 from being transferred to the microstrip line 5, thereby ensuring the stability of the operation of the present invention; and after the coolant absorbs the heat, the heat dissipation fins 17 installed on the strip box 138 can increase the contact area between the strip box 138 and the external air, thereby accelerating the heat dissipation of the coolant into the air, thereby ensuring the heat dissipation effect of the coolant on the resistor 10.

[0035] like Figure 4 and Figure 5 As shown, the bottom of the plurality of resistors 10 is provided with a same insulating gasket 19, the top of the substrate 2 is provided with a strip groove 20 matching the gasket 19, the gasket 19 is installed in the strip groove 20, the top of the gasket 19 is fixedly connected with a plurality of groups of bow-shaped spring pieces 21, and the number of each group of bow-shaped spring pieces 21 is two, the plurality of groups of bow-shaped spring pieces 21 are respectively opposite to the plurality of resistors 10, and the two bow-shaped spring pieces 21 in each group are respectively attached to the front and rear sides of the corresponding resistor 10, and the top of the bow-shaped spring piece 21 is lower than the top of the resistor 10;

[0036] By providing the bow-shaped spring piece 21 , when the resistor 10 is installed between the two microstrip lines 5 , the resistor 10 can be temporarily fixed by the bow-shaped spring piece 21 , thereby ensuring that the resistor 10 will not move randomly when the metal pin 11 of the resistor 10 is pressed by the pressing sheet 131 .

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An adjustable power divider, comprising a housing, characterized in that: A cavity is provided in the shell, a substrate is provided in the cavity, two microstrip lines are symmetrically provided on the top of the substrate, a plurality of resistors are evenly provided between the two microstrip lines, metal pins are provided on both sides of the resistors, a U-shaped pressing groove is provided at the position where the top of the microstrip line contacts the metal pins of the resistors, and the metal pins of the resistors are located in the U-shaped pressing groove, and the same pressing assembly is provided on the tops of the metal pins on the same side of the plurality of resistors; The clamping assembly includes a U-shaped pressing piece matching the U-shaped pressing groove, the bottom of the pressing piece is vertically fixedly connected to two limit rods, the bottom ends of the limit rods slide vertically and are inserted into the U-shaped pressing groove and the base plate, the tops of the multiple pressing pieces are fixedly connected with the same pressing strip, the tops of the pressing strip are vertically fixedly connected to two sleeves, the tops of the sleeves are vertically slidably inserted with a pressing rod, the bottom ends of the pressing rods are fixedly connected with a pressing spring between the bottom ends of the pressing rods and the bottom inner wall of the sleeve, a connecting plate is fixedly connected between the tops of the two pressing rods, and the same strip box is fixedly connected between the connecting plates in the two clamping assemblies, the top of the strip box is pressed by a U-shaped pressing plate, the bottom ends of the two ends of the pressing plate protrude in the direction away from the strip box respectively, and the outward protruding parts of the bottom ends of the pressing plate are vertically rotated and inserted with a second fixing screw.

2. The adjustable power divider according to claim 1, characterized in that: The bottom of the substrate is vertically supported by a plurality of first support rods, which are vertically fixedly connected to the inner wall of the bottom of the cavity, and the top of the substrate is vertically rotated and penetrated with a plurality of first fixing screws, which are threadedly inserted into the tops of the plurality of first support rods one by one. The two microstrip lines are both S-shaped, and one end of the two microstrip lines is connected together to form an input end, and the other ends of the two microstrip lines respectively form output ends, and the output ends are respectively connected with a first feeding connector and a second feeding connector, and the first feeding connector and the second feeding connector are fixedly penetrated and inserted into the shell, and a plurality of resistors are located on the symmetry axes of the two microstrip lines. A cover plate is detachably installed at the bottom of the shell, and second support rods are arranged at positions opposite to the bottom of the substrate and the bottom of both ends of the pressure plate, and the second support rods are vertically fixedly connected to the inner wall of the bottom of the cavity, and the second fixing screws are threadedly inserted into the tops of the second support rods.

3. The adjustable power divider according to claim 2, characterized in that: A water injection hole is provided at the front end of the strip box, a sealing plug is inserted at the water injection hole, the strip box is filled with coolant, a plurality of metal heat conductive plates are fixedly connected to the bottom of the strip box, and the plurality of metal heat conductive plates are respectively attached to the tops of a plurality of resistors, and a plurality of heat dissipating fins are fixedly connected in parallel on both sides of the strip box.

4. The adjustable power divider according to claim 2, characterized in that: A mounting groove matching the shape of the microstrip line, the input end and the output end is provided on the top of the substrate, and the microstrip line, the input end and the output end are mounted in the mounting groove.

5. The adjustable power divider according to claim 4, characterized in that: The bottom of the multiple resistors is provided with a same insulating gasket, the top of the substrate is provided with a strip groove matching the gasket, the gasket is installed in the strip groove, the top of the gasket is fixedly connected with multiple groups of bow-shaped spring clips, and the number of bow-shaped spring clips in each group is two, the multiple groups of bow-shaped spring clips are respectively opposite to the multiple resistors, and the two bow-shaped spring clips in each group are respectively attached to the front and back sides of the corresponding resistor, and the top of the bow-shaped spring clip is lower than the top of the resistor.

6. The adjustable power divider according to claim 2, characterized in that: The pressing sheet and the pressing strip are both made of insulating material, and the width of the pressing strip is smaller than the width of the pressing sheet.

7. The adjustable power divider according to claim 3, characterized in that: A protective pad is fixedly connected to the position where the inner side of the top of the pressing plate contacts the strip box, and the width of the protective pad is greater than the width of the strip box.

8. The adjustable power divider according to claim 6, characterized in that: The resistor metal pin is located between two limiting rods at the bottom of the pressing sheet, and the length of the limiting rod is greater than the sum of the thicknesses of the substrate, the pressing sheet, the metal pin and the microstrip line.

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