Mobile phone antenna testing device

Abstract

The utility model discloses a mobile phone antenna testing device, which relates to the technical field of mobile phone testing, and is characterized in that four clamping blocks which are symmetrically distributed in pairs along the diagonal lines of a movable plate are arranged along the movable plate, so that a piece to be detected can be stably clamped at four corners; the to-be-detected piece is prevented from generating slight displacement when being in contact with the detection head, so that the condition of detection errors is avoided, and the detection effectiveness is improved; the four clamping blocks can be autonomously driven to be close to or far away from each other through the driving assembly, and compared with passive clamping through the elastic force action of a spring, the clamping effect is better and more stable; the movable plate and the to-be-detected piece clamped on the movable plate are driven by the lifting piece to ascend and descend at the same time so as to make contact with the detection head or be away from the detection head, the mass of the movable plate and the to-be-detected piece is small, no other components exist, energy consumption is small compared with driving of the detection head, energy consumption of the mobile phone antenna testing device is reduced, and the testing efficiency is improved. And the purpose of energy-saving detection can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile phone testing, in particular to a mobile phone antenna testing device. Background Art

[0002] With the development of technology, mobile phone functions are becoming more and more powerful, and the number of mobile phone antennas is also increasing. The GPS, DIV, MAIN antenna, WIFI antenna, etc. of mobile phones are very important components in mobile phones. The performance of antennas directly affects the communication function of mobile phones. Therefore, it is necessary to ensure that the performance of various antennas of mobile phones is qualified. Most of the mobile phone antenna test devices on the market cannot easily fix the test product on the equipment, which has a certain impact on the test, and cannot adjust the height of the test end according to the height of the test product at different heights, resulting in the problem of insufficient or too close contact affecting the test results.

[0003] To solve the above problems, a patent document with publication number "CN211061585U" discloses a mobile phone antenna testing device, including an electromagnetic shielding box, a fixed groove and a movable rod, the inner wall of the electromagnetic shielding box is provided with a slide groove, and the inside of the slide groove is connected with a ball bearing, and a connecting block is provided on the outside of the ball bearing, the end of the connecting block is connected with a telescopic rod, and the end of the telescopic rod is connected with a drawer, the fixed groove is installed on the side of the drawer, and the fixed groove and the drawer are welded, a sliding block is provided inside the fixed groove, and the side of the sliding block is connected with a first spring, a clamping block is provided on the top of the sliding block, and a second spring is provided inside the clamping block, and a support rod is installed at the end of the second spring.

[0004] In the above-mentioned prior art, the left and right ends of the part to be detected are clamped autonomously by relying on the elastic force of the slider and the first spring. Since the contact between the detection head and the part to be detected carries a certain pressure, the part to be detected may cause a slight forward and backward movement during the initial contact. Due to the particularity of the part to be detected (the mobile phone antenna contacts are small), it is very likely to cause detection errors (contact disconnection or poor contact communication). At the same time, since the structure of the detection head is relatively complex, it needs to connect more detection circuits and components, and the power consumption is relatively large when driving the detection head to rise and fall, which increases the power energy consumption during detection, which is not conducive to energy-saving detection. Therefore, a mobile phone antenna testing device is needed. Utility Model Content

[0005] The purpose of this application is to provide a mobile phone antenna testing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a mobile phone antenna testing device, comprising an electromagnetic shielding box, a detection head is fixed at the upper end of the electromagnetic shielding box, a drawer is installed below the detection head, which is slidably connected to the electromagnetic shielding box and can be withdrawn at one side, the drawer comprises a fixed seat and a movable plate, the bottom surface of the fixed seat is slidably connected to the electromagnetic shielding box through a sliding structure, and the upper surface of the fixed seat is connected to the movable plate with an adjustable distance through a lifting member;

[0007] The movable plate is provided with clamping blocks, four of which are arranged and symmetrically distributed in pairs along the diagonal line of the movable plate. A driving assembly for driving the four clamping blocks to move closer to or away from each other is also installed at the lower end of the movable plate.

[0008] Preferably, a sliding column is fixed to the lower end of the clamping block, and a sliding hole for the sliding column to slide through is opened on the movable plate. There are four sliding holes and they are symmetrically distributed about the center point of the movable plate. The sliding holes are opened on the diagonal line of the movable plate.

[0009] Preferably, the driving assembly includes a slide rail, a bidirectional screw and a micro motor;

[0010] Two slide rails are provided and are symmetrically arranged along the middle of the movable plate, and the upper end of each slide rail is slidably connected to two clamping blocks symmetrically arranged along the center line of the movable plate through a slide column;

[0011] The two ends of the bidirectional screw are respectively connected to the bottom of the two slide rails through connecting pieces, and the output shaft of the micro motor is fixed to one end of the bidirectional screw;

[0012] One end of the bidirectional screw rod away from the micro motor is rotatably connected with a fixed plate, the upper end of the fixed plate is fixed to the bottom of the movable plate, and one end of the micro motor is fixed to the bottom of the movable plate through another fixed plate.

[0013] Preferably, the connecting member comprises a connecting plate, the connecting plate is fixed to the bottom of the slide rail, and the threads at both ends of the bidirectional screw penetrate the two connecting plates at the bottom of the two slide rails;

[0014] The driving assembly also includes a guide rod and a tension spring. The guide rod and the bidirectional screw are symmetrically arranged about the middle of the slide rail. The two ends of the guide rod are respectively movable and penetrate the other two connecting plates at the bottom of the two slide rails. The tension spring is sleeved on the guide rod and the two ends are respectively fixed to the other two connecting plates at the bottom of the two slide rails.

[0015] Preferably, a positioning groove is provided in the middle of the movable plate, and a center positioning piece is provided at the center point of the movable plate.

[0016] Preferably, the lifting member comprises a hydraulic cylinder, the lower end of the hydraulic cylinder is fixed to the upper surface of the fixed seat, and the piston rod of the hydraulic cylinder is fixed to the lower end of the movable plate.

[0017] Preferably, pressure-sensitive sensors are fixed at both ends of the pins of the detection head, and the lower end of the pressure-sensitive sensor is level with the lower end of the pins of the detection head.

[0018] In summary, the technical effects and advantages of the utility model are:

[0019] 1. In the utility model, by setting four clamping blocks along the movable plate and symmetrically distributed in pairs along the diagonal line of the movable plate, the detected piece can be stably clamped at the four corners to prevent the detected piece from being slightly displaced when contacting the detection head, thereby avoiding the occurrence of detection errors and improving the effectiveness of the detection.

[0020] 2. In the utility model, the driving assembly can autonomously drive the four clamping blocks to move closer to or farther from each other. Compared with passive clamping using the elastic force of the spring, the clamping effect is better and more stable.

[0021] 3. In the utility model, the movable plate and the part to be detected clamped on the movable plate are driven to rise and fall simultaneously by the lifting member to contact the detection head or stay away from the detection head. The movable plate and the part to be detected have a small mass and no other components. Compared with driving the detection head, the driving energy consumption is small, so that the energy consumption of the entire mobile phone antenna test device is reduced, and the purpose of energy-saving detection can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application 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 present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the electromagnetic shielding box in this embodiment when it is cut sideways;

[0024] Figure 2 Schematic diagram of the drawer structure in this embodiment;

[0025] Figure 3 Schematic diagram of the structure of the driving assembly in this embodiment;

[0026] Figure 4 Schematic diagram of the connection structure between the drive assembly and the clamping block in this embodiment.

[0027] In the figure: 1. Electromagnetic shielding box; 2. Detection head; 3. Drawer; 31. Fixed seat; 32. Movable plate; 321. Sliding hole; 322. Positioning groove; 323. Center positioning plate; 4. Clamp; 41. Sliding column; 5. Hydraulic cylinder; 6. Drive assembly; 61. Slide rail; 62. Bidirectional screw; 63. Micro motor; 64. Guide rod; 65. Tension spring; 7. Fixed plate; 8. Connecting plate; 9. Pressure sensitive sensor. DETAILED DESCRIPTION

[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] Example: Reference Figure 1-4 A mobile phone antenna testing device shown in the figure comprises an electromagnetic shielding box 1, a detection head 2 is fixed at the upper end of the electromagnetic shielding box 1, a drawer 3 is installed below the detection head 2, which is slidably connected to the electromagnetic shielding box 1 and can be withdrawn at one side, the drawer 3 comprises a fixed seat 31 and a movable plate 32, the bottom surface of the fixed seat 31 is slidably connected to the electromagnetic shielding box 1 through a sliding structure, and the upper surface of the fixed seat 31 is connected to the movable plate 32 with an adjustable distance through a lifting member;

[0030] A clamping block 4 is installed on the movable plate 32. Four clamping blocks 4 are provided and are symmetrically distributed in pairs along the diagonal line of the movable plate 32. A driving component 6 for driving the four clamping blocks 4 to move closer to or away from each other is also installed at the lower end of the movable plate 32.

[0031] Based on the above structure, the four clamping blocks 4 symmetrically distributed along the diagonal lines of the movable plate 32 can stably clamp the detected object at the four corners (or four sides) to prevent the detected object from slightly displacing when contacting the detection head 2, thereby avoiding the occurrence of detection errors (contact disconnection or poor contact communication), thereby improving the effectiveness of the detection;

[0032] At the same time, the driving assembly 6 can autonomously drive the four clamping blocks 4 to move closer to or farther from each other, which has a better clamping effect and is more stable than passive clamping using the elastic force of the spring.

[0033] Secondly, the movable plate 32 and the part to be detected clamped on the movable plate are driven to rise and fall simultaneously by the lifting member to contact the detection head 2 or move away from the detection head 2. The movable plate 32 and the part to be detected have a small mass and no other components. Compared with driving the detection head 2, the driving energy consumption is smaller, so that the energy consumption of the entire mobile phone antenna test device is reduced, and the purpose of energy-saving detection can be achieved.

[0034] Furthermore, a sliding column 41 is fixed to the lower end of the clamp 4, and a sliding hole 321 is provided on the movable plate 32 for the sliding column 41 to slide through. There are four sliding holes 321 and they are symmetrically distributed about the center point of the movable plate 32. The sliding holes 321 are provided on the diagonal lines of the movable plate 32. Through the setting of the sliding holes 321, the sliding of the sliding column 41 can be guided, thereby limiting and guiding the movement path of the clamp 4, thereby meeting the requirements of the four clamps 4 approaching or moving away from each other along the center point of the movable plate 32, and achieving a stable clamping effect of synchronously clamping the clamped parts.

[0035] Furthermore, the driving assembly 6 includes a slide rail 61, a bidirectional screw 62 and a micro motor 63;

[0036] Two slide rails 61 are provided and are symmetrically arranged along the middle of the movable plate 32. The upper end of each slide rail 61 is slidably connected to two clamping blocks 4 symmetrically arranged along the midline of the movable plate 32 through a slide column 41.

[0037] The two ends of the bidirectional screw 62 are respectively threadedly connected to the bottom of the two slide rails 61 through connecting pieces, and the output shaft of the micro motor 63 is fixed to one end of the bidirectional screw 62;

[0038] One end of the bidirectional screw 62 away from the micro motor 63 is rotatably connected to a fixed plate 7 , the upper end of the fixed plate 7 is fixed to the bottom of the movable plate 32 , and one end of the micro motor 63 is fixed to the bottom of the movable plate 32 through another fixed plate 7 .

[0039] When the four clamping blocks 4 need to be driven to move closer to or away from each other, the user only needs to turn on the micro motor 63 so that the micro motor 63 drives the bidirectional screw 62 to rotate. At this time, the bidirectional screw 62 drives the two slide rails 61 to move closer to or away from each other through the fixed plate 7. The two slide rails 61 drive the four slide posts 41 to move synchronously, and the four slide posts 41 are simultaneously guided by the limiting guide of the slide hole 321, so that they make a linear motion along the diagonal of the movable plate 32, moving closer to or away from each other, so as to achieve the purpose of driving the four clamping blocks 4 to move closer to or away from each other and realize a stable clamping effect.

[0040] Furthermore, the connecting member includes a connecting plate 8, which is fixed to the bottom of the slide rail 61, and the threads at both ends of the bidirectional screw 62 penetrate the two connecting plates 8 at the bottom of the two slide rails 61;

[0041] The driving assembly 6 also includes a guide rod 64 and a tension spring 65. The guide rod 64 and the bidirectional screw 62 are symmetrically arranged about the middle of the slide rail 61. The two ends of the guide rod 64 are respectively movable through the other two connecting plates 8 at the bottom of the two slide rails 61. The tension spring 65 is sleeved on the guide rod 64 and the two ends are respectively fixed to the other two connecting plates 8 at the bottom of the two slide rails 61.

[0042] By setting the guide rod 64 and the tension spring 65, the two slide rails 61 can move closer to or farther from each other more smoothly, thereby making the four clamping blocks 4 move closer to or farther from each other more smoothly, avoiding clamping errors caused by shaking of the four clamping blocks 4 during movement.

[0043] Furthermore, a positioning groove 322 is opened in the middle of the movable plate 32, and a center positioning piece 323 is arranged at the center point of the movable plate 32. Through the arrangement of the positioning groove 322 and the center positioning piece 323, a reference can be provided for the placement of the part to be detected, so that the user can place the detection part more closely to the center point, thereby ensuring that the position of the detection part is more accurate.

[0044] Furthermore, the lifting member includes a hydraulic cylinder 5 , the lower end of the hydraulic cylinder 5 is fixed to the upper surface of the fixing seat 31 , and the piston rod of the hydraulic cylinder 5 is fixed to the lower end of the movable plate 32 .

[0045] Furthermore, pressure-sensitive sensors 9 are fixed at both ends of the pins of the detection head 2, and the lower end of the pressure-sensitive sensor 9 is horizontal with the lower end of the pins of the detection head 2. Through the setting of the pressure-sensitive sensor 9, when the piece to be detected rises with the movable plate 32 and finally contacts the pins (or contacts) at the lower end of the detection head 2, the pressure-sensitive sensor 9 simultaneously contacts the periphery of the piece to be detected or the movable plate 32, thereby triggering an electrical signal to stop the hydraulic cylinder 5 from operating, thereby ensuring that the piece to be detected stays in a position suitable for detection, ensuring the effectiveness of the detection, and avoiding damage to the detection piece or the detection head 2.

[0046] It should be noted that the mobile phone antenna testing device also includes a controller (not shown in the figure), which adopts a programmable industrial controller PLC commonly used in the prior art and suitable for this embodiment. The controller is used to receive the electrical signal of the pressure-sensitive sensor 9 and control the micro motor 61 and the opening and closing of the hydraulic cylinder 5.

[0047] Working principle of the utility model: In daily use, four clamping blocks 4 symmetrically distributed along the diagonal lines of the movable plate 32 can stably clamp the detected object at the four corners to prevent the detected object from slightly displacing when contacting the detection head 2, thereby avoiding the occurrence of errors in the detection and improving the effectiveness of the detection;

[0048] At the same time, the driving assembly 6 can autonomously drive the four clamping blocks 4 to move closer to or farther from each other. Specifically, the user only needs to turn on the micro motor 63 so that the micro motor 63 drives the bidirectional screw 62 to rotate. At this time, the bidirectional screw 62 drives the two slide rails 61 to move closer to or farther from each other through the fixed plate 7. The two slide rails 61 drive the four slide posts 41 to move synchronously, and the four slide posts 41 are simultaneously guided by the limiting position of the slide hole 321, so as to make a linear movement along the diagonal of the movable plate 32 to move closer to or farther from each other, thereby achieving the purpose of driving the four clamping blocks 4 to move closer to or farther from each other. Compared with passive clamping using the elastic force of the spring, the clamping effect is better and more stable.

[0049] Secondly, the movable plate 32 and the part to be detected clamped on the movable plate are driven to rise and fall simultaneously by the hydraulic cylinder 5 to contact the detection head 2 or move away from the detection head 2. The movable plate 32 and the part to be detected have a small mass and no other components. Compared with driving the detection head 2, the driving energy consumption is smaller, which reduces the energy consumption of the entire mobile phone antenna test device and can achieve the purpose of energy-saving detection.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A mobile phone antenna testing device, comprising an electromagnetic shielding box (1), a detection head (2) being fixed at the upper end of the electromagnetic shielding box (1), and a drawer (3) being slidably connected to the electromagnetic shielding box (1) and being removable at one side being installed below the detection head (2), characterized in that: The drawer (3) comprises a fixed seat (31) and a movable plate (32); the bottom surface of the fixed seat (31) is slidably connected to the electromagnetic shielding box (1) via a sliding structure; the upper surface of the fixed seat (31) is connected to the movable plate (32) via a lifting member in an adjustable distance; A clamping block (4) is installed on the movable plate (32), and four clamping blocks (4) are provided and are symmetrically distributed in pairs along the diagonal line of the movable plate (32). A driving component (6) for driving the four clamping blocks (4) to move closer to or away from each other is also installed at the lower end of the movable plate (32).

2. A mobile phone antenna testing device according to claim 1, characterized in that: A sliding column (41) is fixed at the lower end of the clamping block (4), and a sliding hole (321) is provided on the movable plate (32) for the sliding column (41) to slide through. Four sliding holes (321) are provided and are symmetrically distributed about the center point of the movable plate (32), and the sliding holes (321) are provided on the diagonal lines of the movable plate (32).

3. A mobile phone antenna testing device according to claim 2, characterized in that: The driving assembly (6) comprises a slide rail (61), a bidirectional screw rod (62) and a micro motor (63); Two slide rails (61) are provided and are symmetrically arranged along the middle of the movable plate (32); the upper end of each slide rail (61) is slidably connected to two clamping blocks (4) symmetrically arranged along the center line of the movable plate (32) via a slide column (41); The two ends of the bidirectional screw (62) are respectively threadedly connected to the bottom of the two slide rails (61) through connecting pieces, and the output shaft of the micro motor (63) is fixed to one end of the bidirectional screw (62); One end of the bidirectional screw (62) away from the micro motor (63) is rotatably connected to a fixed plate (7), the upper end of the fixed plate (7) is fixed to the bottom of the movable plate (32), and one end of the micro motor (63) is fixed to the bottom of the movable plate (32) through another fixed plate (7).

4. A mobile phone antenna testing device according to claim 3, characterized in that: The connecting member comprises a connecting plate (8), the connecting plate (8) is fixed to the bottom of the slide rail (61), and the threads at both ends of the bidirectional screw rod (62) penetrate through the two connecting plates (8) at the bottom of the two slide rails (61); The driving assembly (6) further comprises a guide rod (64) and a tension spring (65); the guide rod (64) and the bidirectional screw rod (62) are symmetrically arranged about the middle of the slide rail (61); the two ends of the guide rod (64) respectively movably penetrate the other two connecting plates (8) at the bottom of the two slide rails (61); the tension spring (65) is sleeved on the guide rod (64) and the two ends are respectively fixed to the other two connecting plates (8) at the bottom of the two slide rails (61).

5. A mobile phone antenna testing device according to claim 2, characterized in that: A positioning groove (322) is provided in the middle of the movable plate (32), and a center positioning piece (323) is provided at the center point of the movable plate (32).

6. A mobile phone antenna testing device according to claim 1, characterized in that: The lifting component comprises a hydraulic cylinder (5), the lower end of the hydraulic cylinder (5) is fixed to the upper surface of the fixing seat (31), and the piston rod of the hydraulic cylinder (5) is fixed to the lower end of the movable plate (32).

7. A mobile phone antenna testing device according to claim 1, characterized in that: Pressure-sensitive sensors (9) are fixed to both ends of the pins of the detection head (2), and the lower end of the pressure-sensitive sensor (9) is level with the lower end of the pins of the detection head (2).

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