CN106872135A - Drop test device - Google Patents
Drop test device Download PDFInfo
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- CN106872135A CN106872135A CN201710187301.3A CN201710187301A CN106872135A CN 106872135 A CN106872135 A CN 106872135A CN 201710187301 A CN201710187301 A CN 201710187301A CN 106872135 A CN106872135 A CN 106872135A
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- Prior art keywords
- sliding cavity
- test
- measured
- drop test
- drop
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of drop test device.The test device includes turning device, test box and pumping board, test box includes the sliding cavity for vertically extending, sliding cavity includes restraining position, restraining position has what is set to fall distance with the end of sliding cavity, sliding cavity is configured to that in test process the setting surface of test specimen to be measured can collide with end, pumping board is configured to from restraining position insertion sliding cavity to stop test specimen to be measured, and can extract out to discharge test specimen to be measured from sliding cavity, test box is arranged on the work department of turning device, turning device is configured to Turnover testing case, so that the test specimen to be measured for falling reaches the top vertically of sliding cavity.The drop test device simple structure, it is easy to operate, the drop test of multiple circulation can be carried out.
Description
Technical field
The present invention relates to test device technical field, more particularly, to a kind of drop test device.
Background technology
Intelligence wearing class product is liked that various new products are continued to bring out by consumer deeply.The quality pipe of this product
During reason test comprehensively, it usually needs the dropproof performance to product is tested, and quality to product carries out test data
Collection.Currently, the drop test of intelligence wearing class product is mainly using single cycle, the random verification mode fallen.Actually make
There is problem in：1. single cycle, each pick process action is complicated, and testing efficiency is relatively low；2. random falling process, product
The face randomness of touching is too strong, it is impossible to which targetedly the dropproof performance to the surface of product is detected.
The content of the invention
It is an object of the present invention to provide a kind of new solution of drop test device.
According to the first aspect of the invention, there is provided a kind of drop test device.The test device includes turning device, surveys
Examination case and pumping board, the test box include the sliding cavity for vertically extending, and the sliding cavity includes restraining position, the limit
Position position has what is set to fall distance with the end of the sliding cavity, and the sliding cavity is configured in test process to make
The setting surface of the test specimen to be measured is collided with the end, and the pumping board is configured to described from restraining position insertion
To stop the test specimen to be measured in sliding cavity, and can extract out to discharge the test specimen to be measured, the survey from the sliding cavity
Examination case is arranged on the work department of the turning device, and the turning device is configured to overturn the test box, so as to fall
The test specimen described to be measured for falling reaches the top vertically of the sliding cavity.
Alternatively, the sliding cavity is multiple.
Alternatively, the sliding cavity is 3, and respectively with the test specimen to be measured perpendicular to three groups of X-axis, Y-axis and Z axis
The drop test on surface is corresponding.
Alternatively, the restraining position is 2 and respectively close to two ends of the sliding cavity, the restraining position
And with its away from the end there is setting fall distance, the pumping board is 2 and with 2 restraining positions one by one
Correspondence.
Alternatively, the sliding cavity for multiple, near the same side multiple described pumping board be configured to simultaneously extract out and
Insert the sliding cavity.
Alternatively, also including the drawing device for driving the pumping board, the drawing device is arranged on the work
Portion.
Alternatively, the turning device is turntable cylinder, and the drawing device is straight line cylinder.
Alternatively, also including for setting, recording and showing drop number counting device.
Alternatively, the distance of falling is for 5-50 centimetres.
Alternatively, also including stopper, the stopper is arranged on the end of the sliding cavity.
It was found by the inventors of the present invention that in the prior art, drop test complex operation, and the one of test cannot be ensured
Cause property.Therefore, the technical assignment to be realized of the present invention or technical problem to be solved be those skilled in the art never
It is expecting or it is not expected that, therefore the present invention is a kind of new technical scheme.
By referring to the drawings to the detailed description of exemplary embodiment of the invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even
It is used to explain principle of the invention together with its explanation.
Fig. 1 is the structural representation of drop test device according to an embodiment of the invention.
Fig. 2 is the structural representation of another angle of drop test device according to an embodiment of the invention..
Fig. 3 is the structural representation of test box according to an embodiment of the invention.
Fig. 4 is the sectional view along line C-C in Fig. 3.
Fig. 5 is the structural representation of the drop test device for not installing test box according to an embodiment of the invention.
Fig. 6 is the structural representation of test specimen to be measured according to an embodiment of the invention.
Description of reference numerals：
11：Test box；12：Turntable cylinder；13：Flap；14：First straight line cylinder；15：First pumping board；16：Second straight line
Cylinder；17：Second pumping board；18：First sliding cavity；19：Second sliding cavity；20：3rd sliding cavity；21：Base；22：Display screen；
23：Supporting plate；24：First stopper；25：Second stopper；26：Upper surface；27：Lower surface；28：Left surface；29：Right table
Face；30：Preceding surface；31：Surface afterwards；32：First connecting plate；33：Second connecting plate.
Specific embodiment
Describe various exemplary embodiments of the invention in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments do not limit this
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In all examples shown here and discussion, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
A kind of embodiments in accordance with the present invention, there is provided drop test device.The test device can be used for various electronics and produce
The drop test of product, for example, mobile phone, intelligent watch, Intelligent bracelet, earphone, loudspeaker module, camera module, MEMS package
Structure etc..
The test device includes turning device, test box 11 and pumping board.Test box 11 includes the cunning for vertically extending
Dynamic chamber.Vertical direction is the direction of gravity.Test specimen to be measured carries out drop test in being placed to sliding cavity.It is to be tested during test
Part is subject to Action of Gravity Field and falls, and is collided with the side wall of test box 11 etc..
In embodiments of the present invention, sliding cavity includes restraining position.Restraining position is the initial position that test specimen to be measured falls,
Test specimen to be measured falls from restraining position.Restraining position has what is set to fall distance with the end of sliding cavity.Restraining position can be with
There is 1 or multiple, as long as meet setting falls distance.Optionally, distance is fallen for 5-50 centimetres.
Sliding cavity is configured to that in test process the setting surface of test specimen to be measured can collide with the end of sliding cavity.Example
Such as, surface is set as perpendicular to two surfaces or a surface for falling direction.For example, the cross section by setting sliding cavity
Size come limit test specimen to be measured around itself overturn, with ensure setting surface with setting end collide.
Pumping board is configured to from restraining position insertion sliding cavity to stop test specimen to be measured, and can be taken out from sliding cavity
Go out to discharge test specimen to be measured.For example, restraining position is positioned at the middle part of sliding cavity, pumping board is 1, restraining position to sliding cavity
Two ends are fallen apart from equal.For example, restraining position is 2, pumping board is 2, and restraining position has to the end of setting
What is set falls distance.
Test box 11 is arranged on the work department of turning device, and turning device is configured to Turnover testing case 11, so that
The test specimen to be measured for falling reaches the top vertically of sliding cavity.Work department is the power output portion of turning device.Pass through
Turning device, can not only realize treating the drop test repeatedly of test block, additionally it is possible to which realization treats test block perpendicular to setting
The drop test on upper and lower two surfaces in direction, substantially increases testing efficiency.
For example, being comprised the following steps in test：
S1, the test surfaces for selecting test specimen to be measured, such as perpendicular to the upper and lower surface of Z axis；
S2, test specimen to be measured is put into test box 11, wherein upper surface 26 is relative with an end of test box 11, following table
Face 27 is relative with another end of test box 11；
S3, pumping board insert to limit the position of test specimen to be measured；
S4, turning device work, make test specimen to be measured rise to top vertically, such as lower surface 27 down；
S5, pumping board are extracted out so that test specimen to be measured falls, and test specimen to be measured fallen, and lower surface 27 is collided with another end；
S6, pumping board insert to limit the position of the test specimen to be measured for falling, turning device work, so that test specimen to be measured rises to
Top vertically, now upper surface 26 is down；
S7, pumping board are extracted out so that test specimen to be measured falls, and test specimen to be measured fallen, and upper surface 26 is collided with an end.
So, turning device overturns 360 ° of tests for completing a circulation, that is, fall once.
Those skilled in the art can according to actual needs set the number of times for falling.
The drop test device simple structure, it is easy to operate, the drop test of multiple circulation can be carried out.
Furthermore it is possible to ensure that set surface is collided with the end of setting, it is ensured that the uniformity of collision.
Fig. 1 is the structural representation of drop test device according to an embodiment of the invention.
As shown in figure 1, drop test device also includes base 21.Turning device is fixed on base 21 by supporting plate 23
On.It is additionally provided with for setting, recording and showing drop number counting device, in order to realize drop test in base 21
Automatically control.The display screen 22 of counting device is fixed on the surface of base 21.For the ease of making and installing, test box 11 is
Rectangle.
Certainly, the shape of test box 11 can be circle, polygon etc., as long as meeting test condition.
In embodiments of the present invention, as shown in figures 2 and 5, turning device uses turntable cylinder 12, the work of turntable cylinder 12
Portion includes flap 13.Test box 11 is fixed on flap 13.Air cylinder driven has that velocity of rotation is fast, maintenance is convenient special
Point.
For example, being provided with multiple sliding cavities in test box 11.In this way, the drop test device can be carried out simultaneously
The drop test on multigroup surface of test specimen to be measured, improves testing efficiency.
Stopper is additionally provided with test box 11.For example, stopper is arranged on the end of the sliding cavity.It is spacing
Have setting between position and stopper falls distance.In drop test, test specimen to be measured collides with stopper.Stop
Block is used for the ground fallen when simulating actually used.For example, the sliding cavity 20 of the first sliding cavity as shown in Figure 4 18 and the 3rd,
First stopper 24 is fixed on an end of sliding cavity, and the second stopper 25 is fixed on another end of sliding cavity.
The material of stopper is the hardness materials higher such as stainless steel, carbon steel.Above-mentioned material in thousands of time drop tests, Neng Goubao
Hold structural integrity.
It is of course also possible to be that the side wall of test box 11 has enough structural strengths, in drop test, test specimen to be measured is straight
Connect and collided with side wall, the second sliding cavity 19 as shown in Figure 4.
In a preferred embodiment, as shown in figure 4, sliding cavity is 3, and respectively with test specimen to be measured perpendicular to X
Axle, Y-axis are corresponding with the drop test on the three of Z axis groups of surfaces.In test, 3 test specimens to be measured are placed individually into three cunnings
In dynamic chamber, different groups of surfaces of each sliding cavity correspondence.
For example, as shown in fig. 6, the first sliding cavity 18 is used to test perpendicular to the surface of X-axis, including preceding surface 30 and rear table
Face 31.Second sliding cavity 19 is used to test perpendicular to the surface of Y-axis, including left surface 28 and right surface 29；3rd sliding cavity 20
For testing perpendicular to the surface of Z axis, including upper surface 26 and lower surface 27.By the upset of turning device, above-mentioned three are carried out
Group surface and corresponding stopper or the impact several times of side wall.
In one example, restraining position is 2 and respectively close to two ends of sliding cavity.Restraining position and and its
Away from end have setting fall distance.Pumping board is 2 and is corresponded with 2 restraining positions.
For example, as shown in figure 4, each sliding cavity has two restraining positions, each restraining position is provided with a pumping board.
For example, the restraining position where the first pumping board 15 has near the first stopper 24 between the restraining position and the second stopper 25
Have setting falls distance.In test, test specimen to be measured is fallen from the restraining position to the second stopper 25.The institute of second pumping board 17
Restraining position there is setting near the second stopper 25, between the restraining position and the first stopper 24 falls distance.
In test, test specimen to be measured is fallen from the restraining position to the first stopper 24.Preferably, two are fallen apart from identical, this
Sample can guarantee that the accuracy of drop test.
In one example, sliding cavity is multiple, and the multiple pumping boards near the same side are configured to extract out simultaneously and insert
Enter sliding cavity.In this way, the synchronism of multigroup test is can guarantee that, in order to calculate the number of times for falling.For example, such as Fig. 4
With shown in 5, the first pumping board 15 of three sliding cavities is linked together by the first connecting plate 32, three the second pumping boards of sliding cavity
17 are linked together by the second connecting plate 33.Three the first pumping boards 15 and the second pumping board 17 can be extracted out simultaneously respectively, insertion institute
Corresponding sliding cavity.
In a preferred example, test device also includes the drawing device for driving pumping board, and drawing device is set
Put the work department in turning device.For example, drawing device is straight line cylinder, including first straight line cylinder 14 and second straight line cylinder
16.Two cylinders are fixed on the flap 13 of turntable cylinder 12.First straight line cylinder 14 is connected with the first connecting plate 32, is used for
Drive multiple first pumping boards 15.Second straight line cylinder 16 is connected with the second connecting plate 33, for driving multiple second pumping boards 17.
For example, the course of work of the drop test device includes：
SS1,3 test specimens to be measured are placed individually into three sliding cavities.For example, the sliding cavity 18 of preceding surface 30 and first
First stopper 24 is relative, and rear surface 31 is relative with the second stopper 25 of the first sliding cavity 18.Slide left surface 28 and second
Chamber 19 it is relative for installing the side wall of the first stopper 24, the sliding cavity 19 of right surface 29 and second for installing the second stop
The side wall of block 25 is relative.Upper surface 26 is relative with the first stopper 24 of the 3rd sliding cavity 20, the sliding cavity of lower surface 27 and the 3rd
20 the second stopper 25 is relative.When initial, three test specimens to be measured are located near the side of the first stopper 24, and positioned at upper
Side.Now, limiting three positions of test specimen to be measured in the insertion of the first pumping board 15 sliding cavity.Second pumping board 17 is extracted out with to be measured
Falling for test specimen is avoided；
SS2, first the first pumping board of air cylinder driven 15 are extracted out, and now, three test specimens to be measured fall, rear surface 31, right surface
29 and lower surface 27 collided with the second stopper 25 or side wall respectively；
SS3, second the second pumping board of air cylinder driven 17 are inserted in three sliding cavities, to limit three positions of test specimen to be measured；
SS4, turntable cylinder 12 rotate 180 °, so that three test specimens to be measured are positioned at the top of vertical direction；
SS5, second the second pumping board of air cylinder driven 17 are extracted out, so that three test specimens to be measured fall, preceding surface 30, left surface 28
Collided with the first stopper 24 or side wall respectively with upper surface 26；
SS6, first the first pumping board of air cylinder driven 15 are inserted in three sliding cavities, to limit three positions of test specimen to be measured；
SS7, turntable cylinder 12 rotate 180 °, so that three test specimens to be measured are positioned at the top of vertical direction, to carry out down
Drop test once.
Wherein, SS3 and SS4 steps can be carried out simultaneously, to improve test speed.
So, the one of upper surface 26, lower surface 27, preceding surface 30, rear surface 31, left surface 28 and right surface 29 is completed
Secondary drop test.
Turntable cylinder 12 often rotates 360 ° and just completes a drop test for circulation, i.e., 6 surfaces are respectively collided once.
Those skilled in the art can according to actual needs set the number of times of drop test, and be shown by display screen 22
The number of times that number of times and/or plan through completing are completed.
The test device can carry out automatically controlling for drop test, easy to operate, and can guarantee that and fall every time
Distance is consistent.
Furthermore it is possible to prevent test specimen to be measured from being overturn around itself, test surfaces are caused to offset.
Although being described in detail to some specific embodiments of the invention by example, the skill of this area
Art personnel it should be understood that example above is merely to illustrate, rather than in order to limit the scope of the present invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (10)
1. a kind of drop test device, it is characterised in that including turning device, test box (11) and pumping board, the test box
(11) including the sliding cavity for vertically extending, the sliding cavity includes restraining position, the restraining position and the slip
The end in chamber has what is set to fall distance, and the sliding cavity is configured to that setting for the test specimen to be measured can be made in test process
Determine surface to be collided with the end, the pumping board is configured to be inserted in the sliding cavity to stop from the restraining position
Test specimen to be measured is stated, and can be extracted out from the sliding cavity to discharge the test specimen to be measured, the test box (11) is arranged on
The work department of the turning device, the turning device is configured to overturn the test box (11), so that falls is described
Test specimen to be measured reaches the top vertically of the sliding cavity.
2. a kind of drop test device according to claim 1, it is characterised in that the sliding cavity is multiple.
3. a kind of drop test device according to claim 1, it is characterised in that the sliding cavity is 3, and respectively
Drop test with the test specimen to be measured perpendicular to three groups of surfaces of X-axis, Y-axis and Z axis is corresponding.
4. a kind of drop test device according to claim 1, it is characterised in that the restraining position be 2 and point
Not Kao Jin the sliding cavity two ends, the restraining position and with its away from the end have setting fall away from
From the pumping board is 2 and is corresponded with 2 restraining positions.
5. a kind of drop test device according to claim 4, it is characterised in that the sliding cavity is multiple, near same
The multiple described pumping board of side is configured to while extracting out and inserting the sliding cavity.
6. a kind of drop test device according to claim 1, it is characterised in that also including for driving the pumping board
Drawing device, the drawing device is arranged on the work department.
7. a kind of drop test device according to claim 6, it is characterised in that the turning device is turntable cylinder
(12), the drawing device is straight line cylinder.
8. a kind of drop test device according to claim 1, it is characterised in that also including for setting, recording and show
Show drop number counting device.
9. a kind of drop test device according to claim 1, it is characterised in that the distance of falling is for 5-50 centimetres.
10. a kind of drop test device according to claim 1, it is characterised in that also including stopper, the stopper
It is arranged on the end of the sliding cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187301.3A CN106872135B (en) | 2017-03-27 | 2017-03-27 | Drop test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187301.3A CN106872135B (en) | 2017-03-27 | 2017-03-27 | Drop test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106872135A true CN106872135A (en) | 2017-06-20 |
| CN106872135B CN106872135B (en) | 2019-12-13 |
Family
ID=59172929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710187301.3A Active CN106872135B (en) | 2017-03-27 | 2017-03-27 | Drop test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106872135B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137515A (en) * | 2020-02-24 | 2020-05-12 | 广东鸿信食品有限公司 | Paper scrap cleaning machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2601398Y (en) * | 2003-02-26 | 2004-01-28 | 纬创资通股份有限公司 | Drop detector |
| CN1979121A (en) * | 2005-12-08 | 2007-06-13 | 上海晨兴电子科技有限公司 | Object microfall besting method and apparatus |
| CN201421392Y (en) * | 2009-03-27 | 2010-03-10 | 泰金宝电子(苏州)有限公司 | Tester table |
| CN103900781A (en) * | 2012-12-28 | 2014-07-02 | 联想(北京)有限公司 | Falling ball test device |
| CN103940684A (en) * | 2014-05-21 | 2014-07-23 | 杭州同孚环保科技有限公司 | Rotary type vertical drop testing machine |
| CN105865737A (en) * | 2016-03-25 | 2016-08-17 | 青岛海信移动通信技术股份有限公司 | Drop test device and method |
| CN106289703A (en) * | 2016-08-26 | 2017-01-04 | 安徽云图信息技术有限公司 | Electronic equipment drop test device |
-
2017
- 2017-03-27 CN CN201710187301.3A patent/CN106872135B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2601398Y (en) * | 2003-02-26 | 2004-01-28 | 纬创资通股份有限公司 | Drop detector |
| CN1979121A (en) * | 2005-12-08 | 2007-06-13 | 上海晨兴电子科技有限公司 | Object microfall besting method and apparatus |
| CN201421392Y (en) * | 2009-03-27 | 2010-03-10 | 泰金宝电子(苏州)有限公司 | Tester table |
| CN103900781A (en) * | 2012-12-28 | 2014-07-02 | 联想(北京)有限公司 | Falling ball test device |
| CN103940684A (en) * | 2014-05-21 | 2014-07-23 | 杭州同孚环保科技有限公司 | Rotary type vertical drop testing machine |
| CN105865737A (en) * | 2016-03-25 | 2016-08-17 | 青岛海信移动通信技术股份有限公司 | Drop test device and method |
| CN106289703A (en) * | 2016-08-26 | 2017-01-04 | 安徽云图信息技术有限公司 | Electronic equipment drop test device |
Non-Patent Citations (1)
| Title |
|---|
| 龚兵编著: "《中国手机市场营销攻略》", 31 January 2019, 中国经济出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137515A (en) * | 2020-02-24 | 2020-05-12 | 广东鸿信食品有限公司 | Paper scrap cleaning machine |
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| Publication number | Publication date |
|---|---|
| CN106872135B (en) | 2019-12-13 |
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