Tuner performance test fixture

Abstract

The utility model discloses a tuner performance test fixture, and relates to the technical field of satellite television reception. A first mounting plate is fixedly connected to the position, close to the center, of the top end of the bottom frame, a vertical plate is fixedly connected to the position, close to the first mounting plate, of the top end of the bottom frame, a mounting box is fixedly connected to the end, away from the vertical plate, of the first mounting plate and close to the top, and sliding grooves are symmetrically formed in the positions, close to the center, of the top end of the mounting box. Mounting frames are slidably connected into the sliding grooves, and limiting blocks are symmetrically and detachably connected to the opposite ends of the two mounting frames. According to the utility model, the motor I is operated, and then under the mutual cooperation of the lead screw, the U-shaped plate, the limiting shaft, the testing cover and the silencing plate, the silencing work of a tuner testing environment is realized, so that the problem that the reliability of a testing result is difficult to ensure as the testing result of the tuner is easily influenced by noise factors is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of satellite TV reception, in particular to a high-frequency head performance test fixture. Background Art

[0002] The high-frequency head is a device used by TV sets to receive high-frequency signals and demodulate video information. It is also the first part of the public channel. The high-frequency heads used by TV sets are generally divided into digital signal high-frequency heads (referred to as digital high-frequency heads) and analog signal high-frequency heads (referred to as analog high-frequency heads). Simply put, it is a tuner and high-frequency signal amplifier that receives TV signals, and a satellite TV decoder.

[0003] When testing the high-frequency head related data, a test fixture is required. The existing test fixture lacks a limiting structure for the high-frequency head, which makes the high-frequency head easy to move during the test process and easy to deviate from the standard position when testing the high-frequency head, making it difficult to ensure the accuracy of the test results. At the same time, the test results of the high-frequency head are easily affected by noise factors, making it difficult to ensure the credibility of the test results. In view of the above problems, the inventor proposes a high-frequency head performance test fixture to solve the above problems. Utility Model Content

[0004] In order to solve the problems that the high-frequency head is prone to position movement during the test process, the high-frequency head is prone to deviate from the standard position when testing, and the test results of the high-frequency head are easily affected by noise factors, making it difficult to ensure the credibility of the test results; the purpose of the utility model is to provide a high-frequency head performance test fixture.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a high-frequency head performance test fixture, including a base frame, a mounting plate 1 is fixedly connected to the top of the base frame near the center, a vertical plate is fixedly connected to the top of the base frame near the mounting plate, a mounting box is fixedly connected to one end of the mounting plate away from the vertical plate and near the top, a slide groove is symmetrically opened at the top of the mounting box near the center, a mounting frame is slidably connected in the slide groove, two mounting frames are symmetrically and detachably connected to limited blocks at opposite ends, a top plate is fixedly connected to one end of the vertical plate near the mounting plate 1 and near the top, a screw rod is rotatably connected to the bottom end of the top plate near the center, and the bottom end of the screw rod is rotatably connected to the base frame, the outer ring of the screw rod is rotatably connected to a U-shaped plate, the end of the U-shaped plate away from the vertical plate is fixedly connected to a test cover, and the inner wall of the test cover is provided with a silencer plate.

[0006] Preferably, a double-headed screw is rotatably connected between the side walls of the installation box, and both mounting frames are rotatably connected to the double-headed screw threads, a second motor is fixedly mounted on the side end of the installation box, and the output end of the second motor passes through the installation box and is fixedly connected to the double-headed screw.

[0007] Preferably, a placement plate is detachably connected to one end of the mounting plate and is located below the mounting box, a motor is installed near the center of the top of the top plate, and an output end of the motor passes through the top plate and is fixedly connected to the screw rod.

[0008] Preferably, the top of the base frame is symmetrically fixedly connected to the limiting axes near the vertical plate, and the U-shaped plate is slidably connected to the two limiting axes.

[0009] Preferably, a second mounting plate is fixedly connected at the center of the top interior of the test cover, and a lighting lamp is fixedly connected at the center of the side wall of the test cover.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. In the utility model, the second motor is operated, and then the double-headed screw, the mounting frame, the slide groove and the limit block cooperate with each other to achieve the limit fixing function of the high-frequency head, thereby solving the problem that the high-frequency head is prone to position movement during the test process and the high-frequency head is prone to deviate from the standard position during the test;

[0012] 2. In the utility model, the motor is operated, and then the screw rod and the U-shaped plate, as well as the axis limiter, the test cover and the silencer plate cooperate with each other to achieve the silencing of the high-frequency head test environment, thereby solving the problem that the test results of the high-frequency head are easily affected by noise factors, making it difficult to ensure the credibility of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the test cover of the utility model.

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the installation box of the utility model.

[0017] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. base frame; 2. vertical plate; 21. axis limit; 22. screw rod; 23. U-shaped plate; 24. top plate; 25. motor 1; 3. mounting plate 1; 31. placement plate; 32. mounting box; 33. slide groove; 34. double-headed screw; 35. mounting frame; 36. motor 2; 37. limit block; 4. test cover; 41. mounting plate 2; 42. silencer; 43. lighting lamp. DETAILED DESCRIPTION

[0019] 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.

[0020] Example: Figures 1-4 As shown, the utility model provides a technical solution: a high-frequency head performance test fixture, including a base frame 1, a mounting plate 3 is fixedly connected to the top of the base frame 1 near the center, a vertical plate 2 is fixedly connected to the top of the base frame 1 near the mounting plate 3, a mounting box 32 is fixedly connected to one end of the mounting plate 3 away from the vertical plate 2 and near the top, a slide groove 33 is symmetrically opened at the top of the mounting box 32 near the center, a mounting frame 35 is slidably connected in the slide groove 33, and two mounting frames 35 are symmetrically and detachably connected to limited blocks 37 at opposite ends, the vertical plate 2 is fixedly connected to one end of the mounting plate 3 and near the top, a top plate 24 is rotatably connected to the bottom of the top plate 24 near the center, and the bottom end of the screw rod 22 is rotatably connected to the base frame 1, the outer ring thread of the screw rod 22 is rotatably connected to a U-shaped plate 23, the end of the U-shaped plate 23 away from the vertical plate 2 is fixedly connected to a test cover 4, and the inner wall of the test cover 4 is provided with a silencer plate 42.

[0021] A double-headed screw 34 is rotatably connected between the side walls of the installation box 32 , and the two installation frames 35 are both threadedly rotatably connected to the double-headed screw 34 .

[0022] By adopting the above technical solution, the double-headed screw 34 is rotated, so that the two mounting frames 35 connected by the threaded rotation are moved under the action of the sliding groove 33.

[0023] A second motor 36 is fixedly mounted on the side end of the mounting box 32 , and an output end of the second motor 36 passes through the mounting box 32 and is fixedly connected to the double-headed screw 34 .

[0024] By adopting the above technical solution, the second motor 36 is operated, so that the fixedly connected double-headed screw 34 is rotated.

[0025] A placement plate 31 is detachably connected to one end of the mounting plate 3 and is located below the mounting box 32 .

[0026] By adopting the above technical solution, the placement plate 31 is detachably bolted at one end of the mounting plate 3 in order to adjust the distance between the placement plate 31 and the mounting box 32 according to actual usage, so as to realize the operation of testing high-frequency heads of different models.

[0027] A motor 25 is installed near the center of the top of the top plate 24 , and the output end of the motor 25 passes through the top plate 24 and is fixedly connected to the screw rod 22 .

[0028] By adopting the above technical solution, the motor 1 25 is operated, so that the fixedly connected screw rod 22 is rotated.

[0029] The top of the bottom frame 1 is symmetrically fixedly connected to the limiting shafts 21 near the vertical plate 2 , and the U-shaped plate 23 is slidably connected to the two limiting shafts 21 .

[0030] By adopting the above technical solution and setting the limiting axis 21, the purpose is to achieve the effect of the U-shaped plate 23 moving up and down.

[0031] A second mounting plate 41 is fixedly connected to the center of the top of the test cover 4 .

[0032] By adopting the above technical solution, a second mounting plate 41 is arranged at the top center of the test cover 4 for mounting the test tool.

[0033] An illumination lamp 43 is fixedly connected to the center of the side wall of the test cover 4 .

[0034] By adopting the above technical solution, an illumination lamp 43 is arranged at the center of the side wall of the test cover 4 to facilitate the user to observe the internal situation of the test cover 4, and the test cover 4 is made of transparent material.

[0035] Working principle: When the device is in use, the high-frequency head is first placed on the placement plate 31, and the high-frequency head needs to be located between the two limit blocks 37, and then the motor 2 36 is operated to rotate the fixed double-headed screw 34, so that the two mounting frames 35 connected by the threaded rotation move toward each other under the action of the slide groove 33, and then under the action of the limit blocks 37, the high-frequency head is limited and fixed, thereby solving the problem that the high-frequency head is prone to position movement during the test process and the high-frequency head is prone to deviate from the standard position when testing;

[0036] At the same time, before the device is used, multiple silencer plates 42 need to be installed on the inner wall of the test cover 4, and then the motor 25 is operated to rotate the fixedly connected screw rod 22, so that the U-shaped plate 23 connected by the threaded rotation drives the test cover 4 to descend under the action of the two limit shafts 21, until the bottom end of the test cover 4 contacts the base frame 1. At this time, under the action of multiple silencer plates 42, the silencing work of the high-frequency head test environment is realized, thereby solving the problem that the test results of the high-frequency head are easily affected by noise factors, making it difficult to ensure the credibility of the test results.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-frequency head performance test fixture, comprising a base frame (1), characterized in that: A mounting plate (3) is fixedly connected to the top of the base frame (1) near the center, a vertical plate (2) is fixedly connected to the top of the base frame (1) near the mounting plate (3), a mounting box (32) is fixedly connected to the end of the mounting plate (3) away from the vertical plate (2) and near the top, a sliding groove (33) is symmetrically provided at the top of the mounting box (32) near the center, a mounting frame (35) is slidably connected in the sliding groove (33), and two mounting frames (35) are symmetrically and detachably connected at opposite ends. A limit block (37), one end of the vertical plate (2) close to the mounting plate (3) and close to the top is fixedly connected to a top plate (24), the bottom end of the top plate (24) is rotatably connected to a screw rod (22) near the center, and the bottom end of the screw rod (22) is rotatably connected to the bottom frame (1), the outer ring of the screw rod (22) is rotatably connected to a U-shaped plate (23), and one end of the U-shaped plate (23) away from the vertical plate (2) is fixedly connected to a test cover (4), and the inner wall of the test cover (4) is provided with a silencer plate (42).

2. A high-frequency head performance test fixture as described in claim 1, characterized in that: A double-headed screw (34) is rotatably connected between the side walls of the installation box (32), and the two installation frames (35) are both threadably rotatably connected to the double-headed screw (34).

3. A high-frequency head performance test fixture as described in claim 2, characterized in that: A second motor (36) is fixedly mounted on the side end of the installation box (32), and an output end of the second motor (36) passes through the installation box (32) and is fixedly connected to a double-headed screw (34).

4. A high-frequency head performance test fixture as described in claim 1, characterized in that: A placement plate (31) is detachably connected to one end of the installation plate (3) and is located below the installation box (32).

5. A high-frequency head performance test fixture as claimed in claim 1, characterized in that: A motor 1 (25) is installed near the center of the top of the top plate (24), and the output end of the motor 1 (25) passes through the top plate (24) and is fixedly connected to the screw rod (22).

6. A high-frequency head performance test fixture as claimed in claim 1, characterized in that: The top end of the base frame (1) is symmetrically fixedly connected to the limiting axes (21) near the vertical plate (2), and the U-shaped plate (23) is slidably connected to the two limiting axes (21).

7. A high-frequency head performance test fixture as claimed in claim 1, characterized in that: A second mounting plate (41) is fixedly connected at the center of the top end of the test cover (4).

8. A high-frequency head performance test fixture as described in claim 1, characterized in that: A lighting lamp (43) is fixedly connected to the center of the side wall of the test cover (4).

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