CN115112330A

CN115112330A - Directional drop test system and directional drop test method

Info

Publication number: CN115112330A
Application number: CN202110305867.8A
Authority: CN
Inventors: 刘坚; 刘国青; 魏龙飞
Original assignee: BEIJING WOHUA WHIRLTONE CONTROL TECHNOLOGY CO LTD
Current assignee: BEIJING WOHUA WHIRLTONE CONTROL TECHNOLOGY CO LTD
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2022-09-27

Abstract

The invention relates to the technical field of directional drop tests, in particular to a directional drop test system and a directional drop test method. The directional drop test system comprises a lifting device, a feeding device, a drop device and a control device. The falling equipment is connected with the lifting equipment, can move in the up-and-down direction, and comprises an angle adjusting device and a picking device, wherein the picking device is detachably connected with the angle adjusting device, the picking device comprises a picking assembly, and the picking assembly can rotate in the second direction through adjustment of the angle adjusting device. The directional drop test method has the following advantages: the height that the cell-phone fell and the angle when the cell-phone fell can be adjusted, the contact position of cell-phone and bottom surface after guaranteeing to fall can acquire effectual test data.

Description

Directional drop test system and directional drop test method

Technical Field

The invention relates to the technical field of directional drop tests, in particular to a directional drop test system and a directional drop test method.

Background

At present, in the process of using mobile devices such as mobile phones and tablet computers, products are often dropped on the ground accidentally, even from a high place, the products are damaged, and great loss is caused to users. Therefore, the drop test is an indispensable test in the manufacturing process of mobile phones, tablet computers, and the like. The installation layout of various components inside the product makes the result that causes the damage different after the product falls with different gestures, consequently, all adjust the product into various angles through directional equipment of falling now and carry out drop test.

The utility model discloses a chinese application number is CN 200720149060.5's utility model patent discloses a directional test machine that falls of cell-phone, it comprises fuselage, control gas circuit, control circuit triplex, its characterized in that: the fuselage comprises frame, elevating gear and falling device. The lifting device comprises a lifting cylinder, a lifting cylinder guide column, a lifting synchronous belt, a linear guide rail, an electric appliance box and a guide column cross beam; the falling device comprises a clamping cylinder, a rotating bottom plate, a rotating left side plate, a rotating right side plate, a reinforcing plate and a sucker bottom plate. Carry out drop test after the angle of the angular adjustment product through adjusting sucking disc or sucking disc support, can know from the accompanying drawing that the adjustment of angle is that the manual work is adjusted according to the angle scale, and the accuracy of adjustment is relatively poor, inefficiency, complex operation. In the test process, the falling device fixes the product through the sucking disc all the time, so that the product falls together with the falling device, therefore, the weight of the free falling body test is the total weight of the product and the falling device, and the test result is obviously different from the falling result of the product. When the product falls, the reaction force given to the mobile phone by the falling plane is naturally different from the reaction force given to the mobile phone by falling alone due to the weight of the falling device. In addition, the falling device is always under the resistance action of the guide pillar of the lifting cylinder and the linear guide rail in the falling process, and the situation of free falling is greatly different. Consequently, utilize this utility model discloses a test result that the directional test machine of falling of cell-phone goes on is not conform to the condition of falling of actual cell-phone, and the test result is inaccurate.

The utility model with the Chinese application number of 201720700339.1 discloses a directional drop test machine, which comprises a frame, a driven pulley assembly, a transmission belt, a slide rail, a clamp assembly, an operation panel, a safety grating, a buffer, a servo motor and two guide shafts; an observation window is arranged in the left middle of the front side surface of the rack, and vertical safety gratings are arranged on the left side and the right side of the observation window; the top end in the frame is equipped with the driven pulley assembly, and the driving pulley assembly on the servo motor output drives the driven pulley assembly, still be equipped with vertical guiding axle and slide rail in the frame, the left and right sides of slide rail is located to two guiding axles, the last electro-magnet that is equipped with of driving belt. During the directional drop test machine test that this patent discloses, attract through the electro-magnet that the anchor clamps assembly promotes release anchor clamps assembly behind certain height, release the cell-phone behind the anchor clamps assembly centre gripping cell-phone drops to certain height for the cell-phone itself freely drops to the bottom, has solved the defect of above-mentioned patent to a certain extent. However, the adjustment of the angle of the mobile phone is realized through a 45-degree angle turntable, the tested angle is only 45 degrees, the angle is uncertain when the mobile phone actually falls, and the test result is not in line with the actual falling condition.

Disclosure of Invention

In view of the above, the present invention aims to provide a directional drop test method, in which an angle adjustment mechanism is adopted to adjust the angle of a pickup mechanism to any required angle, so as to solve the problems that the test angle is single, the test result does not conform to the actual situation, and effective test data cannot be obtained.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a directional drop test system, the directional drop test system comprising:

a lifting device comprising a substrate;

the charging equipment is fixed in on the base plate, include:

a first power device fixed to the substrate;

the second power device is rotatably connected with the first power device through a rotating shaft;

the bearing table is rotatably connected with the second power device in a first direction;

fall equipment, with lifting device is connected, can move in the up-and-down direction, include:

the angle adjusting device is driven by the lifting equipment to move up and down and comprises a second adjusting part;

a pick-up device detachably connected with the angle adjusting device, wherein the pick-up device comprises a pick-up assembly and a first adjusting component, the first adjusting component is fixedly connected with the pick-up assembly, the first adjusting component and the second adjusting component are detachably connected in contact, and the second adjusting component can drive the first adjusting component to rotate in a second direction;

a control device comprising:

the input equipment is used for inputting initial parameters and operation instructions;

the processor is used for receiving the initial parameters and the operation instructions, calculating the initial parameters, obtaining data of calculation results and generating control instructions;

the controller is used for receiving the data and the control instruction transmitted by the processor and controlling the actions of the lifting equipment, the falling equipment and the feeding equipment;

the sensor assembly detects first position information of the tested device in the vertical direction, second position information of the tested device in the horizontal direction, first angle information and second angle information of the tested device, and transmits the first position information, the second position information, the first angle information and the second angle information to the processor.

Further, the second power device includes:

a motor;

a drive assembly, comprising:

the driving rotating part is connected with a main shaft of the motor;

driven rotation piece, with the initiative is rotated the piece and is connected, through the initiative is rotated the piece and is driven the rotation of driven rotation piece, and, the plummer with the coaxial fixed connection of driven rotation piece.

Further, the lifting device further comprises:

the lifting device is fixed on the base plate, the falling equipment further comprises a connecting device, the angle adjusting device is connected with the lifting device through the connecting device, and the falling equipment is driven to move up and down through the lifting device;

the angle adjusting device and the picking device are connected with the guide rod in a vertical slidable manner;

the connecting device is detachably connected with the picking device.

Further, the second adjusting component is a second friction roller;

the first adjusting component is a first friction roller;

when the angle adjusting device and the picking device are connected through the connecting device, the peripheral surface of the first friction roller is in contact connection with the peripheral surface of the second friction roller.

Further, the outer peripheral surface of the first friction roller is in flexible contact connection with the outer peripheral surface of the second friction roller.

Further, the first friction roller and the second friction roller are both flexible rollers, or,

the first friction roller and the second friction roller respectively comprise a rigid shaft and a flexible sleeve sleeved outside the rigid shaft.

Further, the first adjusting component is a first gear, and the second adjusting component is a second gear;

when the angle adjusting device and the picking device are connected through the connecting device, the first gear is meshed with the second gear.

Further, the pickup device further includes:

a vacuum generator coupled to the pickup assembly;

an aerator coupled to the picking assembly.

A method of directional drop testing by a directional drop testing system as claimed in any preceding claim, comprising:

s100, inputting initial parameters and selecting a test mode;

s200, placing the tested equipment on feeding equipment, and starting the test;

s300, lifting the falling equipment to an initial height, moving the testing equipment to an initial position, and adjusting a first angle of the tested equipment;

s400, the falling equipment absorbs the tested equipment, the falling equipment is lifted to a first height specified by the test, and the feeding equipment moves to a feeding position;

s500, adjusting a second angle of the tested equipment, releasing the pickup device to enable the pickup device to freely fall to a second height specified by the test, and releasing the tested equipment;

s600, landing angle adjusting equipment is connected with the angle adjusting equipment and the picking equipment;

s700, checking the designated parameters of the tested device and judging the damage degree of the tested device.

Further, in step S100, the test mode includes a directional drop mode and a custom drop mode;

the directional falling mode is to designate one first angle and one second angle to carry out a directional falling test;

the user-defined falling mode is to designate more than two first angles and more than two second angles, and the directional falling test is repeatedly carried out for more than two times.

Further, in the directional falling mode, inputting the initial parameters through an input device;

and in the user-defined falling mode, inputting the initial parameters of each test through an input device, or importing a pre-established initial parameter file, and reading and inputting each initial parameter data in the initial parameter file through a processor.

Further, in step S300, the method includes:

s310, starting a lifting device to lift the falling device, detecting height information through a first position sensor, transmitting the height information to a controller, and controlling the lifting device to stop when the lifting device is lifted to the initial height by the controller;

s320, starting a first power device, rotating a second power device, detecting the position information of the bearing table of the feeding equipment through a second position sensor, transmitting the position information to the processor, and controlling the first power device to stop by the controller when the bearing table of the feeding equipment reaches the initial position;

s330, the second power device is started to rotate the bearing table, first angle information of the tested equipment is detected through a first angle sensor and is transmitted to the processor, and when the first angle of the tested equipment reaches a test specified angle, the controller controls the second power device to stop.

Further, in step S400, the method includes:

s410, extracting gas in the picking device through a vacuum generator to enable the picking device to form a vacuum state, and sucking the tested equipment through a sucker;

s420, starting the lifting equipment, lifting the falling equipment, detecting height information through the first position sensor, transmitting the height information to the controller, and controlling the lifting equipment to stop by the controller when the height information reaches a test initial height specified by a test;

and S430, the first power device drives the second power device to return to the feeding position.

Further, in step S500, the method includes:

s510, adjusting a second angle of rotation of the tested device through an angle adjusting device, detecting second angle information of the tested device through a second angle sensor, transmitting the second angle information to a processor, and controlling the angle adjusting device to stop by a controller when the second angle reaches a specified angle required by a test;

s520, the controller controls the connecting equipment to be separated from the picking device, the picking device falls freely, the height information of the picking device is detected through the first position sensor, and the height information is transmitted to the processor;

and S530, when the height of the picking device reaches a second height for releasing the tested equipment specified by the test, the controller controls the vacuum generator to release the vacuum state of the picking device and release the tested equipment.

Further, in step S530, the method includes:

and S531, controlling an inflating device to inflate gas into the pickup device by using a controller.

Further, when the test mode is the custom mode of falling, still include:

s800, judging whether the test times are the designated times or not;

if yes, stopping the test;

if not, return to step S200.

Compared with the prior art, the directional drop test method has the following advantages:

the mobile phone falling height adjusting device has the advantages that the falling height of the mobile phone can be adjusted through the lifting device, the angle of the mobile phone falling can be adjusted through the angle adjusting mechanism, the contact position of the fallen mobile phone and the bottom surface is guaranteed, and effective test data can be obtained.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of a directional drop test system according to an embodiment of the present invention;

FIG. 2 is a perspective view of a loading device according to an embodiment of the invention;

figure 3 is a perspective view of a fall apparatus according to an embodiment of the invention;

FIG. 4 is a perspective view of a pickup apparatus according to an embodiment of the present invention;

fig. 5 is a perspective view of an angle adjustment apparatus according to an embodiment of the present invention.

FIG. 6 is a flow chart of a directional drop test method according to an embodiment of the present invention;

description of reference numerals:

100-falling device, 110-picking device, 111-picking assembly, 112-first adjusting part, 113-vacuum generator, 114-aerator, 120-angle adjusting device, 121-second adjusting part, 130-connecting device, 200-feeding device, 210-first power device, 220-second power device, 221-transmission assembly, 222-motor, 230-bearing table, 300-lifting device, 310-base plate, 320-lifting device, 330-guide rod, 400-tested device.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The descriptions in this document referring to "first", "second", "upper", "lower", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," "upper," "lower," may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it is necessary that a person skilled in the art can realize the combination, and the technical solutions in the embodiments are within the protection scope of the present invention.

The directional drop test method and the directional drop test system can be used for performing drop tests of different postures on various electronic equipment such as mobile phones, tablet computers, notebook computers, displays and the like, and testing the damage degree of products. Hereinafter, a mobile phone will be described as an example.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A directional drop test system, as shown in fig. 1, includes a lifting device 300, a loading device 200, a drop device 100, and a control device (not shown).

The lifting device 300 includes a base plate 310.

The feeding apparatus 200, as shown in fig. 2, is fixed on the substrate 310, and includes a first power device 210, a second power device 220, and a carrier 230. The first power device 210 is fixed to the base plate 310. The second power unit 220 is rotatably connected to the first power unit 210 via a rotating shaft. The platform 230 is rotatably connected to the second power device 220 in the first direction I, and the platform 230 is connected to the second power device 220.

The falling apparatus 100, as shown in fig. 3, is connected to the lifting apparatus 300 to be movable in the up-and-down direction, and includes an angle adjusting means 120 and a picking-up means 110. The angle adjusting means 120 is driven by the lifting device 300 to move up and down, and the angle adjusting means 120 includes a second adjusting member 121. The first adjusting member 112 is fixedly connected to the picking assembly 111, the first adjusting member 112 and the second adjusting member 121 are detachably connected in contact, and the second adjusting member 121 can drive the first adjusting member 112 to rotate in the second direction II.

The control device includes an input device, a processor, a controller, and a sensor assembly. The input device is used for inputting initial parameters and operating instructions. A processor. And receiving the initial parameters and the operation instruction, calculating the initial parameters, obtaining data of a calculation result, and generating a control instruction. The controller controls the lifting device, the falling device and the feeding device to act. The sensor assembly detects first position information of the tested device in the vertical direction, second position information of the tested device in the horizontal direction, first angle information and second angle information of the tested device, and transmits the first position information, the second position information, the first angle information and the second angle information to the controller.

The input device can adopt a keyboard, a mouse, a U disk, a mobile hard disk and the like to input initial parameters, execution instructions and the like to the processor. And the processor calculates the received initial parameters, and sends an execution instruction to the controller after obtaining a result. The mobile phone is placed on the bearing platform 230 of the feeding device 200, the first power device 210 drives the second power device 220 to rotate the bearing platform 230 to an initial position, and the initial position is located below the falling device 100, so that the mobile phone can be conveniently sucked after the picking device 110 falls. The first angle of the mobile phone is adjusted at the initial position, and the first angle is a horizontal rotation angle of the mobile phone when the mobile phone is placed on the bearing table 230. The second power device 220 drives the bearing platform 230 to rotate to adjust the angle of the mobile phone. The first angle information is detected by the sensor assembly during adjustment and is transmitted to the controller, and when the first angle reaches the angle specified in the test, the controller controls the second power device 220 to stop.

The dropping device 100 falls, and after the mobile phone is picked up by the picking assembly 111, the dropping device 100 is lifted to a first position designated by a test, and the first position is a position where a drop test starts. When the falling device 100 is lifted, the first position information of the falling device 100 is detected through the sensor assembly and is transmitted to the controller, and when the first position reaches the falling starting height required by the test, the controller controls the falling device 100 to stop lifting.

The controller controls the second adjusting part 121 to drive the first adjusting part 112 to rotate in the second direction II, adjusts the angle of the picking assembly 111, achieves adjustment of the second angle of the mobile phone, and controls to stop adjusting the angle when the sensor assembly detects that the second angle reaches the angle required by the test.

The controller controls the pickup device 110 to separate from the angle adjusting device 120 and drop the free-falling body downward. The sensor assembly detects a falling position of the pickup 110, and the controller controls the pickup to release the hand phone when the pickup 110 falls to a second height designated by a test, that is, a height at which the pickup 110 releases the hand phone. If the mobile phone is directly released at the first height, the mobile phone deflects due to the gravity center problem in the falling process, the initially set angle is changed, the purpose of test requirements cannot be achieved, and correct test data cannot be obtained, so that when the mobile phone starts to fall, the pickup device 110 is required to carry the mobile phone along the vertical direction, and the mobile phone is released after freely falling to a second height close to the ground under the state that the angle of the mobile phone is not changed.

The mobile phone falls to the ground in a free-falling state after being released. And detecting the appearance and other parameters of the fallen mobile phone, and judging the damage degree of the mobile phone.

Through the directional drop test system with the structure, the drop height of the mobile phone can be adjusted through the lifting device, the angle of the mobile phone when the mobile phone drops can be adjusted through the angle adjusting mechanism, the contact position of the mobile phone after dropping and the bottom surface is ensured, and effective test data can be acquired.

Further, as shown in fig. 2, the second power device 220 includes a motor 222 and a transmission assembly 221. The transmission assembly 221 includes a driving rotor (not shown) and a driven rotor (not shown). The driving rotation member is connected to the main shaft of the motor 222. Driven rotation piece with the initiative rotation piece is connected, through the initiative rotation piece drives driven rotation piece rotates, and, plummer 230 with driven rotation piece coaxial fixed connection.

The transmission assembly 221 may be any prior art transmission form, such as a gear transmission, a belt transmission, a worm gear transmission, a nut and screw transmission, or the like. Taking the belt transmission mechanism as an example, the driving transmission member is a driving pulley, and is connected to the main shaft of the motor 222, and drives the driven transmission member, i.e., the driven pulley, to rotate through the synchronous belt. The rotating disc 231 is fixed to the driven pulley, and the rotating disc 231 rotates along with the rotation of the motor 222, so that the bearing platform 230 rotates, and the mobile phone is adjusted in the first direction I, i.e., in the horizontal direction.

Similarly, the transmission assembly 210 may also adopt any transmission mechanism in the prior art, and is designed in detail according to the actual design requirement, and will not be described herein again.

Further, as shown in fig. 1, the lifting device 300 further includes a lifting device 320 and a guide bar 330.

The lifting device 320 is fixed on the base plate 310, as shown in fig. 4, the falling apparatus 100 further includes a connecting device 130, the angle adjusting device 120 is connected with the lifting device 320 through the connecting device 130, and the falling apparatus 100 is driven to move up and down through the lifting device 320.

The guide bar 330 is fixed to the base plate 310, and the angle adjusting device 120 and the pickup device 110 are slidably connected to the guide bar 330 in the vertical direction.

The connecting means 130 is detachably connected to the picking means 110.

The angle adjusting device 120 and the pickup device 110 are moved in the up-and-down direction by the connecting device 130. The guiding rod 330 guides the angle adjusting device 120 and the picking device 110, and particularly, after the connecting device 130 is separated from the picking device 110, the picking device 110 slides downwards along the guiding rod 330 in a free-falling state, so that deviation in the falling process is avoided, and the accuracy of test data is ensured.

In one embodiment, as shown in fig. 5, the second adjusting member 121 is a second friction roller. As shown in fig. 5, the picking apparatus 110 further includes a first adjusting component 112, the first adjusting component 112 is a first friction roller, and the first friction roller is fixedly connected to the picking assembly 111. When the angle adjusting device 120 and the pickup device 110 are connected by the connecting device 130, the outer circumferential surface of the first friction roller and the outer circumferential surface of the second friction roller are in contact connection.

The rotation of the pickup assembly 111 in the second direction II is achieved by the friction roller set composed of the first friction roller and the second friction roller, so that the second angle of the mobile phone is adjusted.

Further, the first friction roller and the second friction roller are both flexible rollers, or the first friction roller and the second friction roller both comprise a rigid shaft and a flexible sleeve sleeved outside the rigid shaft.

First friction gyro wheel and second friction gyro wheel all adopt flexible gyro wheel, increase the area of contact between first friction gyro wheel and the second friction gyro wheel, increase frictional force, for the line contact between the rigidity friction gyro wheel can more effectively rotate through the first friction gyro wheel of frictional force drive, realize the regulation to picking up the angle of subassembly 111.

The first friction roller and the second friction roller may be integrally formed as a flexible roller, for example, made of rubber, or the roller shaft may be a rigid shaft, which may increase the rigidity of the friction roller, and a flexible sleeve, for example, a rubber tube, may be sleeved on the outer circumferential surface of the rigid shaft.

When a heavier product, such as a monitor of a computer, is tested by the directional drop system of the present invention, it is difficult to accurately adjust the angle of the product because the frictional force between the frictional roller sets is limited.

In another embodiment, the first adjustment member 112 is a first gear, and the second adjustment member 121 is a second gear. When the angle adjusting device 120 and the pick-up device 110 are connected by the connecting device 130, the first gear is engaged with the second gear.

After the first gear is meshed with the second gear, the first gear is driven to rotate through the rotation of the second gear. When the two gears are engaged, there is a possibility that the gear teeth interfere with each other, so that when the angle adjusting device 120 and the pickup device 110 are connected through the connecting device 130, the engagement condition of the two gears is detected through the sensor, and the engagement information is transmitted to the processor, the required rotation angle for ensuring that the second gear and the first gear can be engaged is calculated, an instruction for rotating the corresponding angle of the second gear is transmitted to the controller, and after the second gear is rotated by the required angle, the angle adjusting device 120 and the pickup device 110 are connected through the connecting device 130.

Further, as shown in fig. 4, the pickup device 110 further includes a vacuum generator 113 and an aerator 114. A vacuum generator 113 is connected to the pick-up assembly 111. An aerator 114 connected to the picking assembly 111.

The picking assembly 111 may take any form to pick up the cell phone, such as, for example, gripping, lifting, etc. In this embodiment, the mobile phone is preferably picked up by suction. The gas inside the picking assembly 111 is extracted by the vacuum generator 113 to reach a vacuum state, and the suction cup of the picking assembly 111 sucks the mobile phone. Releasing the vacuum state by the vacuum generator 113 when releasing the mobile phone. However, the height of the pick-up device 110 for releasing the mobile phone is close to the ground, and after the mobile phone is in a vacuum state, the mobile phone can be separated from the suction cup only after the air pressure inside the pick-up assembly 111 and the external atmospheric pressure reach a balance, so that the mobile phone may not be separated from the suction cup, and the pick-up device 110 may fall to the bottom, which may cause inaccurate test data. Therefore, when the vacuum state is released, the inflator 114 inflates air into the pickup assembly 111, and the time for the hand phone to be separated from the suction cup is shortened.

As shown in fig. 6, a directional drop test method includes:

s100, inputting initial parameters and selecting a test mode;

the test mode comprises a directional falling mode and a user-defined falling mode;

Inputting the initial parameters through an input device in the directional falling mode;

The initial parameters include: name, brand, model, physical size, etc. of the product.

S200, placing the tested equipment on feeding equipment, and starting the test;

s330, the second power device is started to rotate the bearing table, first angle information of the tested equipment is detected through the first angle sensor and is transmitted to the processor, and when the first angle of the tested equipment reaches a test specified angle, the controller controls the second power device to stop.

s420, starting the lifting device, lifting the falling device, detecting height information through the first position sensor, transmitting the height information to the controller, and controlling the lifting device to stop by the controller when the height information reaches a test initial height specified by a test;

And S531, controlling an inflating device to inflate gas into the picking device by using a controller.

S600, a landing angle adjusting device is connected with the angle adjusting device and the pickup device;

S800, judging whether the test times are the designated times or not;

if yes, stopping the test;

if not, return to step S200.

Specifically, the initial parameters are input through an input device, or a pre-established initial parameter file is imported, and the processor reads the parameters in the file. The processor calculates the falling height of the mobile phone when the mobile phone actually falls (non-test falling height) according to the initial parameters, and adjusts the size of the bearing table according to the overall dimension. And controlling the running times of the system (one directional drop and multiple drops at different angles) according to the input test mode.

On the feeding equipment, firstly, the mobile phone is horizontally placed on a bearing table of the feeding equipment, and a test is started. And the controller adjusts the rotation angle of the mobile phone on the horizontal plane according to the horizontal angle required by the test according to the instruction of the processor. And starting a vacuum generator to extract the gas in the pickup device to form a basic vacuum state, and sucking the mobile phone through the sucking disc. The handset is lifted to the initial height of drop required for the test. As is known, a mobile phone falls at different heights, has different potential energies, and has different damage degrees, so that the falling height in accordance with a conventional falling process must be specified in a test, for example, three heights can be selected within a range of 0.3m to 2m from the ground for the test. The corner of the mobile phone in the vertical direction is adjusted through the angle adjusting device, the inclination degree of the mobile phone is different when the mobile phone is grounded at different corners, and the contact part with the ground is different. The range of the rotation angle may be any angle within a range of 360 degrees, and the plane of the mobile phone opposite to the bottom surface contacts the bottom surface within a range of-90 degrees (for example, 0 degree below the vertical direction, and-90 degrees counterclockwise horizontal position), and-90 degrees (horizontal position along the pointer), and when the mobile phone is turned over at 90 degrees to 270 degrees upward, the plane of the mobile phone opposite to the bottom surface contacts the bottom surface. During the test, the falling angle can be selected correspondingly according to the material property of the mobile phone, the plane position of the screen of the mobile phone, the layout of electronic elements in the mobile phone, the structure of the mobile phone shell and the like.

When the mobile phone falls from the initial height of the test, the mobile phone can overturn due to the gravity position in the falling process, so that correct test data of falling at a specified angle cannot be obtained. Therefore, the picking device is released first, and the picking device drives the mobile phone to freely fall in the vertical direction in a state that the mobile phone is sucked by the picking device. The pick-up device falls to a second height specified by the test, namely the height of the released mobile phone, the second height is closer to the ground, and the mobile phone basically does not generate larger change of the angle in the falling process. When the mobile phone is released, the vacuum generator is started, the vacuum state in the picking device is released, the air pressure in the picking device gradually reaches the external atmospheric pressure, and the mobile phone falls down freely under the action of self weight. However, a certain time is required for the change of the air pressure inside the pickup device, and the second height is close to the ground, so that the mobile phone reaches the bottommost end along with the pickup device without being released, and real and effective test data cannot be obtained easily. Therefore, when the vacuum generator is started to release the vacuum state in the picking device, the air charging device is used for charging air into the picking device, so that the rise of the air pressure in the picking device is accelerated, and the mobile phone can be released instantly.

After the mobile phone falls to the ground, the appearance and the designated parameters of the mobile phone are checked to obtain test data, the test data are analyzed, and the damage degree of the mobile phone is judged.

And the landing angle adjusting device is connected with the picking device.

And judging whether the test frequency is the designated test frequency, and if so, for example, the test mode is a directional drop test mode, or the user-defined drop mode finishes the last test, and ending the test.

In the user-defined falling mode, if the test times are not finished and the last test is finished, after the damage degree of the mobile phone is checked, the mobile phone is placed on the bearing table again, and the steps are repeated from the step S200 to continue the test.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A directional drop test system, comprising:

a lifting device (300) comprising a base plate (310);

a loading device (200) fixed on the substrate (310), comprising:

a first power unit (210) fixed to the base plate (310);

a second power device (220) rotatably connected with the first power device (210) through a rotating shaft;

a bearing table (230) rotatably connected with the second power device (220) in a first direction (I);

a falling device (100) connected to the lifting device (300) and movable in an up-and-down direction, comprising:

an angle adjusting device (120) driven by the lifting device (300) to move up and down, wherein the angle adjusting device (120) comprises a second adjusting component (121);

a pick-up device (110) detachably connected with the angle adjusting device (120), wherein the pick-up device (110) comprises a pick-up component (111) and a first adjusting component (112), the first adjusting component (112) is fixedly connected with the pick-up component (111), the first adjusting component (112) is detachably connected with a second adjusting component (121) in a contact way, and the second adjusting component (121) can drive the first adjusting component (112) to rotate in a second direction (II);

a control device comprising:

the controller receives the data and the control instruction transmitted by the processor and controls the actions of the lifting device (300), the falling device (100) and the feeding device (200);

a sensor assembly detecting first position information of the device under test (400) in an up-down direction, second position information of the device under test (400) in a horizontal direction, first angle information and second angle information of the device under test (400), and transmitting the first position information, the second position information, the first angle information and the second angle information to the processor.

2. The directional drop test system of claim 1, wherein the second motive device (220) comprises:

a motor (222);

a transmission assembly (221), comprising:

a driving rotation member connected with a main shaft of the motor (222);

driven rotation piece, with the initiative is rotated the piece and is connected, through the initiative is rotated the piece and is driven the rotation of driven rotation piece, and, plummer (230) with driven rotation piece coaxial fixed connection.

3. The directional drop test system of claim 1, wherein the lifting apparatus (300) further comprises:

the lifting device (320) is fixed on the base plate (310), the falling device (100) further comprises a connecting device (130), the angle adjusting device (120) is connected with the lifting device (320) through the connecting device (130), and the falling device (100) is driven to move up and down through the lifting device (320);

a guide bar (330) fixed to the base plate (310), the angle adjusting device (120) and the pickup device (110) being slidably connected to the guide bar (330) in the up-down direction;

the connecting device (130) is detachably connected with the picking device (110).

4. A directional drop test system according to claim 3,

the second adjusting part (121) is a second friction roller;

the first adjusting part (112) is a first friction roller;

when the angle adjusting device (120) and the picking device (110) are connected through the connecting device (130), the outer peripheral surface of the first friction roller is in contact connection with the outer peripheral surface of the second friction roller.

5. The directional drop test system of claim 4,

the outer peripheral surface of the first friction roller is in flexible contact connection with the outer peripheral surface of the second friction roller.

6. A directional drop test system according to claim 5,

the first friction roller and the second friction roller are both flexible rollers, or,

7. A directional drop test system according to claim 3,

the first adjusting part (112) is a first gear, and the second adjusting part (121) is a second gear;

when the angle adjusting device (120) and the picking device (110) are connected through the connecting device (130), the first gear is meshed with the second gear.

8. The directional drop test system of claim 1, wherein the pick-up device (110) further comprises:

a vacuum generator (113) connected to the pick-up assembly (111);

an aerator (114) connected to the picking assembly (111).

9. A method of directional drop testing by a directional drop testing system as claimed in any one of claims 1 to 8, comprising:

s100, inputting initial parameters and selecting a test mode;

s200, placing the tested equipment on feeding equipment, and starting the test;

s700, checking the designated parameters of the tested equipment and judging the damage degree of the tested equipment.

10. The directional drop test method of claim 9,

in step S100, the test mode includes a directional drop mode and a custom drop mode;

the directional drop mode is to designate one first angle and one second angle, perform a directional drop test once, and repeatedly perform more than two directional drop tests;

the user-defined falling mode is to designate more than two first angles and more than two second angles.

11. A method of directional drop testing according to claim 10,

12. A method of directional drop testing according to claim 9,

in step S300, the method includes:

13. A method of directional drop testing according to claim 9,

in step S400, the method includes:

s410, extracting gas in the picking device through a vacuum generator to enable the interior of the picking device to form a vacuum state, and sucking the tested equipment through a sucker;

14. A method of directional drop testing according to claim 9,

in step S500, the method includes:

15. A method of directional drop testing according to claim 14,

in step S530, the method includes:

16. A method of directional drop testing according to any of claims 9 to 15,

when the test mode is the user-defined falling mode, the method further comprises the following steps:

s800, judging whether the test times are the designated times or not;

if yes, stopping the test;

if not, the process returns to the step S200.