CN219348103U

CN219348103U - Adjustable mobile phone tightness test fixture

Info

Publication number: CN219348103U
Application number: CN202320059224.4U
Authority: CN
Inventors: 李春
Original assignee: Shenzhen Mingweixing Technology Co ltd
Current assignee: Shenzhen Mingweixing Technology Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-07-14
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses an adjustable mobile phone tightness test fixture, which relates to the field of mobile phone test equipment and aims to solve the technical problem that the mobile phone tightness test fixture cannot position a mobile phone and is easy to cause poor test precision.

Description

Adjustable mobile phone tightness test fixture

Technical Field

The utility model belongs to the field of mobile phone testing equipment, and particularly relates to an adjustable mobile phone tightness testing jig.

Background

The mobile phone produced in the current market has a plurality of varieties, because the shell of the mobile phone is of an assembled structure, and comprises a panel and a shell part, more structural gaps exist, and before the mobile phone leaves a factory, a tightness test is required to be carried out so as to prevent a plurality of dust or water vapor from entering the mobile phone due to insufficient tightness of the mobile phone, and the service life of the mobile phone is influenced.

The tightness detection of the mobile phone adopts a high-precision air tightness detector and a high-sensitivity large-screen touch screen, a positive pressure testing system and a negative pressure testing system are integrated, the principle of the air tightness test of the mobile phone is that the pressure is attenuated, the gas is pressurized to see the pressure change of the gas, if the degree of air pressure attenuation exceeds the design requirement of tightness of the mobile phone, the mobile phone is determined to be unqualified, and then the mobile phone is sealed by the tightness detector by using a mold, and then the mobile phone is pressurized, but because the model of the mobile phone is different, the mold is not completely matched with the appearance of the mobile phone, the mobile phone is easy to slide in the testing jig in the pressurization process, so that the pressure of the tested air flow fluctuates to influence the testing precision, and therefore, the testing jig with the function of positioning the mobile phone needs to be designed.

Therefore, to the position that above-mentioned mobile phone tightness test tool can't fix a position the mobile phone, lead to the not good condition of test accuracy easily, develop a novel test tool, utilize the leakproofness detector platform cooperation that has adjustable centre gripping machines to play the dustcoat of mould effect, guarantee mobile phone position fixed unchanged at the in-process of test, ensure that the air current pressure does not take place too big fluctuation, improve test accuracy.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide an adjustable mobile phone tightness test jig which aims at solving the technical problems that the existing mobile phone tightness test jig cannot position a mobile phone and is easy to cause poor test precision.

(2) Technical proposal

In order to solve the technical problems, the utility model provides an adjustable mobile phone tightness test fixture which comprises a tester body, a test bench arranged at the upper end of the tester body and an outer housing arranged above the test bench, wherein a test cavity for placing a mobile phone is arranged at the inner side of the test bench, a vertical frame is symmetrically arranged at the left side and the right side of the upper end of the tester body, a horizontal oil cylinder is fixedly arranged between one opposite side of the bottom end of the vertical frame and the test bench, two groups of positioning sheets are symmetrically arranged at the left side and the right side of the inner side of the test cavity, the positioning sheets are arranged at the top end of a hydraulic shaft lever of the horizontal oil cylinder, and through openings matched with the shape of the positioning sheets are formed at the left end and the right end of the outer housing.

When the mobile phone tightness testing jig with adjustable technical scheme is used, a user puts a mobile phone to be tested into a testing cavity, the mobile phone is positioned on the upper side of a liner, then a linear motor is started to drive an outer housing to longitudinally fall into the testing cavity along a guide rail, an air inlet hole and an air channel are mutually communicated, a horizontal oil cylinder is started to control a positioning plate to move oppositely and extrude the mobile phone to firmly lock the mobile phone on two sides of the mobile phone, an air pump in a tester body is utilized to pump air into a closed space formed by the testing cavity and the outer housing through the air channel and the air inlet hole, after the air pressure is stabilized for a period of time, the air pumping is stopped, the pressure sensing element of the tester body monitors the air pressure in the testing cavity in real time, the pressure drop condition is fed back timely, and the sealing performance of the mobile phone is judged.

Further, an air channel is connected between the air pump arranged in the tester body and the front end of the test bench, an air inlet hole is formed in the front end of the outer cover shell, the air inlet hole and the air channel at the front end of the test bench are positioned on the same horizontal line, the air pump arranged in the tester body presses air into the test cavity through a channel formed by communicating the air channel and the air inlet hole, and the detection of the tightness of the mobile phone is realized through the change of pressure.

Further, the guide rail is installed to the opposite side of the stand, linear motor is installed in the guide rail outside, linear motor set up in horizontal hydro-cylinder top, linear motor directly converts the electric energy into linear motion mechanical energy, the guide rail is the magnetism track that is fixed with magnet, linear motor's active cell includes coil winding, hall element circuit board, thermistor and electronic interface, keep the position of active cell in the magnetic field that the magnetic track produced through the guide rail, feed back linear motor position through linear encoder, magnetic force promotes linear motor along guide rail axial displacement, control housing business turn over test chamber.

Further, the balancing frame is symmetrically installed at the left end and the right end of the outer cover shell, the balancing frame is fixedly connected with the linear motor, the buffer pad is arranged at the lower end of the outer cover shell, the linear motor drives the outer cover shell to synchronously move through the connection of the balancing frame, and when the outer cover shell falls down, the buffer pad is used for contacting with the bottom surface of the test cavity in advance, so that the effects of buffering protection, shock absorption and noise reduction are achieved.

Further, guide posts are symmetrically arranged on the left side and the right side of the upper end of the test board, guide holes are formed in the inner side of the balance frame, the guide posts are arranged on the inner side of the guide holes, and the stability of the outer cover shell is kept by sleeving the guide posts and the guide holes in the process of longitudinal movement of the outer cover shell, so that the guide effect is achieved, and the outer cover shell can accurately enter the test cavity.

Furthermore, the inner walls of the left side and the right side of the test cavity are provided with overlapping grooves matched with the shape of the locating piece, one side of the locating piece opposite to the test cavity is provided with a protection pad, the locating piece opposite to the test cavity is clamped on two sides of the mobile phone, and the test cavity plays a role in isolation and protection through flexible materials of the protection pad, so that direct stress damage of a mobile phone shell is avoided.

Further, the bottom of the inner side of the test cavity is provided with a liner made of the same material as the protection pad, the liner is arranged below the outer cover shell, when the mobile phone is placed in the test cavity, the bottom of the mobile phone leans against the liner, the surface of the liner is rough, the anti-slip performance is achieved, the lower part of the shell of the mobile phone is protected, and sliding scratch damage is prevented.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: according to the adjustable mobile phone tightness test fixture, the mobile phones with different structural sizes are positioned and locked in a mode that the hydraulic oil cylinder drives the positioning plate, so that poor test precision caused by fluctuation of air flow pressure due to sliding of the mobile phone in the inflation test process is prevented; the outer housing is used as die equipment for sealing and is driven by a linear motor to move up and down, so that the device is flexible and convenient to use, closely attached to the test cavity and good in tightness.

Drawings

FIG. 1 is a schematic diagram of an assembly structure of an embodiment of an adjustable mobile phone tightness test fixture according to the present utility model;

FIG. 2 is a schematic diagram of an assembly structure of an embodiment of an adjustable mobile phone tightness test tool according to the present utility model;

FIG. 3 is a schematic diagram of a tester body according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of an outer casing structure of an embodiment of an adjustable mobile phone tightness test fixture according to the present utility model.

The marks in the drawings are: 1. a tester body; 2. a test bench; 3. a test chamber; 4. a vertical frame; 5. a horizontal cylinder; 6. a positioning sheet; 7. an outer housing; 8. a through port; 9. an airway; 10. an air inlet hole; 11. a guide rail; 12. a linear motor; 13. a balancing stand; 14. a cushion pad; 15. a guide column; 16. a guide hole; 17. a superposition tank; 18. a protective pad; 19. a liner.

Detailed Description

The embodiment is an adjustable mobile phone tightness test fixture, the assembly structure diagram of the mobile phone tightness test fixture is shown in fig. 1, the assembly structure diagram of the mobile phone tightness test fixture is shown in fig. 2, the structure diagram of a tester body 1 is shown in fig. 3, the structure diagram of an outer cover 7 is shown in fig. 4, the mobile phone tightness test fixture comprises a tester body 1, a test table 2 arranged at the upper end of the tester body 1, an outer cover 7 arranged above the test table 2, a test cavity 3 for placing a mobile phone is arranged at the inner side of the test table 2, a stand 4 is symmetrically arranged at the left side and the right side of the upper end of the tester body 1, a horizontal cylinder 5 is fixedly arranged between one opposite side of the bottom end of the stand 4 and the test table 2, two groups of positioning plates 6 are symmetrically arranged at the left side and the right side of the inner side of the test cavity 3, the positioning plates 6 are arranged at the top ends of a hydraulic shaft rod of the horizontal cylinder 5, and through openings 8 matched with the shapes of the positioning plates 6 are formed at the left side and the right side of the outer cover 7.

For this embodiment, the air pump and the pressure sensor are built in the tester body 1, and a certain amount of air is introduced into the closed space formed by the test cavity 3 and the outer cover 7 through the air pump, so that the stable air pressure in the test cavity 3 is maintained, and after a period of time, when the air flows into the mobile phone through the gap of the mobile phone shell, the air pressure in the test cavity 3 is reduced in a small extent, and the tightness of the mobile phone is determined according to the value of the pressure drop detected by the tester body 1.

The air pump arranged in the tester body 1 is connected with an air channel 9 between the front end of the test bench 2, an air inlet hole 10 is formed in the front end of the outer cover 7, the air inlet hole 10 and the air channel 9 at the front end of the test bench 2 are positioned on the same horizontal line, the air pump arranged in the tester body 1 presses air into the test cavity 3 through a channel formed by communicating the air channel 9 and the air inlet hole 10, and the detection of the tightness of the mobile phone is realized through the change of pressure.

Meanwhile, a guide rail 11 is installed on the opposite side of the vertical frame 4, a linear motor 12 is installed on the outer side of the guide rail 11, the linear motor 12 is arranged above the horizontal oil cylinder 5, a balancing frame 13 is symmetrically installed at the left end and the right end of the outer cover shell 7, the balancing frame 13 is fixedly connected with the linear motor 12, a buffer pad 14 is arranged at the lower end of the outer cover shell 7, a guide column 15 is symmetrically installed on the left side and the right side of the upper end of the test bench 2, a guide hole 16 is formed in the inner side of the balancing frame 13, the guide column 15 is arranged on the inner side of the guide hole 16, electric energy is directly converted into linear motion mechanical energy by the linear motor 12, the guide rail 11 is a magnetic track fixed with a magnet, a rotor of the linear motor 12 comprises a coil winding, a Hall element circuit board, an electrothermal regulator and an electronic interface, the position of the rotor in a magnetic field generated by the magnetic track is kept by the guide rail 11, the linear motor 12 is fed back by a linear encoder, the magnetic force to push the linear motor 12 to axially move along the guide rail 11, the outer cover shell 7 is controlled to enter and exit the test cavity 3, the linear motor 12 is synchronously moved by the connection of the balancing frame 13, the outer cover 7 moves down the buffer pad 7, and the buffer pad 7 is enabled to be accurately contacted with the inner side of the outer cover shell 7, and the test cavity 3 is enabled to move in a contact with the test cavity, and the test cavity 3 is enabled to be in a vertical direction, and the test cavity is enabled to be in a stable manner by the test cavity, and the test cavity is enabled to be in contact with the test cavity.

In addition, the inner walls of the left side and the right side of the test cavity 3 are provided with overlapping grooves 17 matched with the shape of the positioning sheet 6, one side opposite to the positioning sheet 6 is provided with a protection pad 18, the bottom end of the inner side of the test cavity 3 is provided with a liner 19 made of the same material as the protection pad 18, the liner 19 is arranged below the outer cover shell 7, the positioning sheet 6 is oppositely clamped on two sides of the mobile phone, the flexible material of the protection pad 18 plays a role in isolation and protection, direct stress damage of the mobile phone shell is avoided, when the mobile phone is placed in the test cavity 3, the bottom of the mobile phone leans against the liner 19, the surface of the liner 19 is rough, the mobile phone has certain anti-skidding capability, the lower part of the shell of the mobile phone is protected, and the sliding scratch damage is prevented.

When the mobile phone tightness testing jig with adjustable technical scheme is used, a user puts a mobile phone to be tested into the testing cavity 3, the mobile phone is positioned on the upper side of the gasket 19, then the linear motor 12 is started to drive the outer cover 7 to longitudinally fall into the testing cavity 3 along the guide rail 11, the air inlet hole 10 is communicated with the air channel 9, the horizontal cylinder 5 is started to control the positioning plate 6 to oppositely move and extrude to firmly lock the mobile phone at two sides of the mobile phone, then the air pump in the tester body 1 is utilized to pump air into a closed space formed by the testing cavity 3 and the outer cover 7 through the air channel 9 and the air inlet hole 10, after the air pressure is stabilized for a period of time, the air pumping is stopped, the pressure sensing element of the tester body 1 monitors the air pressure in the testing cavity 3 in real time, the pressure drop condition is fed back in time, and the sealing performance of the mobile phone is judged.

Claims

1. The mobile phone tightness testing jig comprises a tester body, a test bench arranged at the upper end of the tester body, and an outer housing arranged above the test bench; the mobile phone testing device is characterized in that a testing cavity for placing a mobile phone is formed in the inner side of the testing table, vertical frames are symmetrically arranged on the left side and the right side of the upper end of the testing device body, a horizontal oil cylinder is fixedly arranged between one opposite side of the bottom end of each vertical frame and the testing table, two groups of positioning pieces are symmetrically arranged on the inner side of the testing cavity, the positioning pieces are arranged on the top ends of hydraulic shaft rods of the horizontal oil cylinders, and through holes matched with the shape of the positioning pieces are formed in the left end and the right end of the outer cover.

2. The adjustable mobile phone tightness test fixture according to claim 1, wherein an air channel is connected between an air pump arranged in the tester body and the front end of the test bench, an air inlet hole is formed in the front end of the outer cover shell, and the air inlet hole and the air channel at the front end of the test bench are positioned on the same horizontal line.

3. The adjustable mobile phone tightness test fixture according to claim 1, wherein a guide rail is installed on the opposite side of the stand, a linear motor is installed on the outer side of the guide rail, and the linear motor is arranged above the horizontal cylinder.

4. The adjustable mobile phone tightness test fixture according to claim 3, wherein balancing frames are symmetrically arranged at the left end and the right end of the outer cover shell, the balancing frames are fixedly connected with the linear motor, and a buffer pad is arranged at the lower end of the outer cover shell.

5. The adjustable mobile phone tightness test fixture according to claim 4, wherein guide posts are symmetrically arranged on the left side and the right side of the upper end of the test bench, guide holes are formed in the inner side of the balance frame, and the guide posts are arranged in the inner side of the guide holes.

6. The adjustable mobile phone tightness test fixture according to claim 1, wherein the inner walls of the left side and the right side of the test cavity are provided with overlapping grooves matched with the shape of the positioning sheet, and one opposite side of the positioning sheet is provided with a protection pad.

7. The adjustable mobile phone tightness test fixture according to claim 6, wherein a gasket made of the same material as the protection pad is arranged at the bottom end of the inner side of the test cavity, and the gasket is arranged below the outer cover shell.