CN208109997U - test fixture for circuit board - Google Patents
test fixture for circuit board Download PDFInfo
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- CN208109997U CN208109997U CN201820426590.8U CN201820426590U CN208109997U CN 208109997 U CN208109997 U CN 208109997U CN 201820426590 U CN201820426590 U CN 201820426590U CN 208109997 U CN208109997 U CN 208109997U
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- bracket
- circuit board
- lower bracket
- test fixture
- shielding piece
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
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- 230000005307 ferromagnetism Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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- 239000011265 semifinished product Substances 0.000 description 1
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- Tests Of Electronic Circuits (AREA)
Abstract
The utility model discloses a kind of test fixtures for circuit board, including：Lower bracket, circuit board are adapted for placement on the upper surface of lower bracket, and circuit board is equipped with shield bracket, and the top of shield bracket has aperture, is additionally provided with multiple test points on circuit board；Upper bracket, upper bracket is spaced apart and is located at the top of lower bracket with lower bracket, upper bracket can be mobile in the direction towards lower bracket and the direction far from lower bracket, the surface towards lower bracket of upper bracket is equipped with shielding piece, and shielding piece is opposite with aperture, and multiple thimbles are additionally provided on upper bracket, multiple thimbles and multiple test points correspond, when upper bracket is moved a certain distance towards lower bracket, thimble blocks aperture with corresponding test point contact, shielding piece.Test fixture according to the present utility model for circuit board, simplifies test step, reduces testing cost, improves the effect of signal shielding and the accuracy rate of test result, and then improve production efficiency.
Description
Technical field
The utility model designs circuit board technology field, more particularly, to a kind of test fixture for circuit board.
Background technique
In the production process of circuit board (such as mainboard), in order to be monitored in real time in stage and semi-finished product to quality, need
Mainboard is calibrated after mainboard patch finishes, comprehensive survey, electric current, WIFI (wireless fidelity, Wireless Fidelity)
Equal Basic function testings if shield bracket is not fully sealed, will appear signal during the test between part of module
Interference, or by the interference of outer signals, lead to the mistake survey or mistake that occur high.For the porose shield bracket in part,
Need in advance device to hole be sealed processing, cost is increased, and need to remove after testing, to reduce efficiency and the master of test
The production efficiency of plate.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
A kind of test fixture for circuit board out, the test fixture for circuit board low, test accuracy rate with testing cost
High advantage.
According to the test fixture for circuit board of the utility model embodiment, including：Lower bracket, the circuit board are suitable for
It is placed on the upper surface of the lower bracket, the circuit board is equipped with shield bracket, and the top of the shield bracket, which has, opens
Hole is additionally provided with multiple test points on the circuit board；Upper bracket, the upper bracket are spaced apart with the lower bracket and are located at described
The top of lower bracket, the upper bracket can be mobile in the direction towards the lower bracket and the direction far from the lower bracket, institute
The surface towards the lower bracket for stating upper bracket is equipped with shielding piece, and the shielding piece is opposite with the aperture, the upper branch
Multiple thimbles are additionally provided on frame, multiple thimbles and multiple test points correspond, when the upper bracket is described in
When lower bracket moves a certain distance, the thimble blocks the aperture with the corresponding test point contact, the shielding piece.
According to the test fixture for circuit board of the utility model embodiment, by upper bracket towards lower bracket
Setting shielding piece on surface, and shield that piece is opposite with the aperture of shield bracket, and shielding piece can block aperture when test, it simplifies
Test step reduces testing cost, improves the effect of signal shielding and the accuracy rate of test result, and then improves production
Efficiency.
Some embodiments according to the present utility model, the test fixture for circuit board further include：Locating rod, the positioning
Bar is located on the upper bracket and extends towards the lower bracket, and the shielding piece is located at the close lower branch of the locating rod
On the end face of one end of frame.
Further, the locating rod is threaded through on the upper bracket, one far from the lower bracket of the locating rod
End be equipped with locating part, after the direction that the upper bracket is directed away from the lower bracket moves a certain distance, the locating part with
The upper surface of the upper bracket is only supported, and the test fixture further includes：Elastic component, the elastic component are set in the locating rod
On, and the elastic component often drives the shielding piece direction to lean between shielding piece and the lower surface of the upper bracket
The direction of the nearly lower bracket is mobile.
In some embodiments of the utility model, the locating rod is threaded through on the upper bracket, the locating rod
One end far from the lower bracket is equipped with locating part, and the test fixture further includes：Elastic component, the elastic component are set in described
In locating rod and between the locating part and the upper surface of the upper bracket, the close locating part of the elastic component
One end is connect often to drive the shielding piece towards close to the movement of the direction of the lower bracket with the locating part.
Some embodiments according to the present utility model, the upper bracket are equipped with the guide post vertically extended, institute
It states lower bracket and is equipped with the guide groove cooperated with the guide post.
Further, the guide post is multiple, and the guide groove is multiple and corresponds with multiple guide posts.
Some embodiments according to the present utility model, the test fixture for circuit board further include：Fixing piece, the fixation
Part is connect with the lower bracket, and the upper bracket is movably arranged on the fixing piece in the direction towards the lower bracket
It is mobile with the direction far from the lower bracket.
Further, the fixing piece is two and is located at the opposite two sides of the lower bracket.
Some embodiments according to the present utility model, the shielding piece are ferromagnetism steel plate.
Further, the shielding piece is Al-alloy parts or steel part.
Some embodiments according to the present utility model, the shielding piece meet with a thickness of d, the d：0.3mm≤d≤
0.5mm。
The edge of some embodiments according to the present utility model, the shielding piece exceeds the edge of the aperture.
Further, the length at edge of the edge beyond the aperture of the shielding piece is L, and the L meets：1mm≤L
≤3mm。
Further, the L meets：L=2mm.
Some embodiments according to the present utility model, the shape of the aperture are round, ellipse or polygon.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and is readily appreciated that, wherein：
Fig. 1 is the perspective view according to the test fixture for circuit board of the utility model embodiment；
Fig. 2 is the structural schematic diagram according to the test fixture for circuit board of the utility model embodiment；
Fig. 3 is the structural schematic diagram according to the test fixture for circuit board of the utility model another embodiment；
Fig. 4 is according to the locating rod of the test fixture for circuit board of the utility model embodiment, shielding piece and screen
Cover the main view of bracket；
Fig. 5 is according to the locating rod of the test fixture for circuit board of the utility model embodiment, shielding piece and screen
Cover the top view of bracket.
Appended drawing reference：
Test fixture 100,
Lower bracket 1, guide post 11, guide groove 12,
Upper bracket 2, locating rod 21, locating part 211, elastic component 212, shielding piece 22, thimble 23,
Shield bracket 3, aperture 31,
Fixing piece 4.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " length ", " thickness ", "upper", "lower", " preceding ",
The orientation or positional relationship that " rear ", "left", "right", "top", "inner", "outside" indicate is that orientation based on the figure or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition,
Define " first ", the feature of " second " can explicitly or implicitly include one or more of the features.It is practical at this
In novel description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Below with reference to the accompanying drawings the test fixture 100 for circuit board according to the utility model embodiment is described.
As shown in Figure 1-Figure 3, according to the test fixture 100 for circuit board of the utility model embodiment, may include
Lower bracket 1 and upper bracket 2.
Specifically, as shown in Figure 1, Figure 2 and Figure 4, circuit board be adapted for placement in lower bracket 1 upper surface it is (as shown in Figure 1
Upper surface) on, circuit board is equipped with shield bracket 3, and the top of shield bracket 3 can have aperture 31, be additionally provided on circuit board
Multiple test points.Circuit board can be mainboard, be provided with multiple modules, such as radio-frequency module, Wireless Fidelity on circuit board
(WiFi, wireless fidelity) module etc., part of module needs to connect with other components after the completion of test, is shielding
The top setting aperture 31 of bracket 3 is covered, space can be left for the processing or connection of next stage module.In addition, shielding
It can be fixedly connected between bracket 3 and circuit board, shield bracket 3 has the function of shielded signal to the module on circuit board, from
And the signal interference between module can be reduced, improve the accuracy rate of test.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, upper bracket 2 is spaced apart with lower bracket 1 and is located at the top of lower bracket 1 (as schemed
Top shown in 1), upper bracket 2 can be towards the direction of lower bracket 1 (direction from top to bottom as shown in Figure 1) and far under
The direction (direction from the bottom to top as shown in Figure 1) of bracket 1 is mobile, and the surface towards lower bracket 1 of upper bracket 2 is equipped with screen
Piece 22 is covered, shielding piece 22 and aperture 31 are opposite, and multiple thimbles 23, multiple thimbles 23 and multiple test points are additionally provided on upper bracket 2
It corresponds, when upper bracket 2 is moved a certain distance towards lower bracket 1, thimble 23 and corresponding test point contact, shielding piece 22
Block aperture 31.
As a result, when testing circuit board, test fixture 100 can be synchronously completed to the shielding branch with aperture 31
The shielding of frame 3 may be implemented completely to seal, without carrying out people in 31 position of aperture of shield bracket 3 before testing
Work fastens or the process of copper-surfaced foil, and the maintenance problem and inventory disposal problem of the module after advantageously accounting for sealing simplify survey
Trial work sequence reduces the signal interference between module, reduces the cost of test, improves the speed and accuracy of test.
It should be noted that the outer profile of shielding piece 22 can be that round, ellipse or polygon can in test
Circuit board to be placed on lower bracket 1, mobile upper bracket 2 moves upper bracket 2 towards the direction of lower bracket 1, works as shielding
When piece 22 blocks the aperture 31 of shield bracket 3, test equipment is opened, so as to realize calibration, the comprehensive survey, electricity to circuit board
The test of the basic functions such as stream, WIFI.
According to the test fixture 100 for circuit board of the utility model embodiment, by being propped up under the direction of upper bracket 2
Setting shielding piece 22 on the surface of frame 1, and the aperture 31 for shielding piece 22 and shield bracket 3 is opposite, shielding piece 22 can be with when test
Block aperture 31, simplify test step, reduce testing cost, improve signal shielding effect and test result it is accurate
Rate, and then improve production efficiency.
Some embodiments according to the present utility model, as shown in Figure 1, Figure 2 and Figure 4, the test fixture 100 for circuit board
Can also include：Locating rod 21, locating rod 21 are located on upper bracket 2 and extend towards lower bracket 1, and shielding piece 22 is located at locating rod
On the end face of one end (lower end as shown in Figure 1) of 21 close lower bracket 1.Locating rod 21 can be cylindrical body or polygon prism
Body, shielding piece 22 and locating rod 21 can be attached fixation, shielding piece 22 and locating rod by the modes such as welding, being threadedly coupled
21 can also be integrally formed part.When upper bracket 2 is mobile, locating rod 21 is mobile with upper bracket 2, to drive in locating rod 21
Shielding piece 22 it is mobile.It, can be to avoid working as thimble in addition, be located at one end towards lower bracket 1 of locating rod 21 for piece 22 is shielded
23 with test point contact on circuit board when, shielding the phenomenon that the not blocking aperture 31 also generation of piece 22.
Further, as shown in Figure 1, Figure 2 and Figure 4, locating rod 21 can be threaded through on upper bracket 2, locating rod 21 it is remote
One end (upper end as shown in Figure 4) from lower bracket 1 is equipped with locating part 211, when upper bracket 2 is directed away from the direction of lower bracket 1
After moving a certain distance, the upper surface (upper surface as shown in Figure 1) of locating part 211 and upper bracket 2 is only supported, and upper bracket 2 can be with
Equipped with sliding eye, sliding eye is through the upper surface (upper surface as shown in Figure 1) of upper bracket 2 and the lower end surface of upper bracket 2 (as schemed
Lower end surface shown in 1), locating rod 21 can be threaded through in sliding eye.Moving range of the locating part 211 to locating rod 21 as a result,
With position-limiting action, locating rod 21 is threaded through always in upper bracket 2.
In addition, as shown in Figure 1, Figure 2 and Figure 4, test fixture 100 further includes：Elastic component 212, elastic component 212 are set in fixed
On the bar 21 of position, and elastic component 212 is located between shielding piece 22 and the lower surface of upper bracket 2 with normal driving shielding piece 22 towards close
The direction of lower bracket 1 is mobile.Elastic component 212 can be spring, and the service life of elastic component 212 is longer, and manufacturing process is more simple
It is single, and manufacturing cost is lower, can apply stable driving force to locating rod 21.In addition, elastic component 212 has buffer function,
It has advantageously reduced circuit board and has shielded the risk that piece 22 is subject to crushing.
In some embodiments of the utility model, locating rod 21 is threaded through on upper bracket 2, the separate lower branch of locating rod 21
One end of frame 1 is equipped with locating part 211, and test fixture 100 further includes：Elastic component 212, elastic component 212 are set in locating rod 21
And between locating part 211 and the upper surface of upper bracket 2, one end of the close locating part 211 of elastic component 212 and locating part
211 connections are with normal driving shielding piece 22 towards close to the movement of the direction of lower bracket 1.Upper bracket 2 can be equipped with sliding eye, sliding eye
The upper surface of upper bracket 2 and the lower end surface of upper bracket 2 are penetrated through, locating rod 21 can be threaded through in sliding eye.Elastic component 212 can be with
Service life for spring, elastic component 212 is longer, and manufacturing process is relatively simple, and manufacturing cost is lower, can be to locating rod 21
Apply stable driving force.In addition, elastic component 212 has buffer function, circuit board is advantageously reduced and shielding piece 22 is pressed
Bad risk.
Some embodiments according to the present utility model, as depicted in figs. 1 and 2, upper bracket 2 are equipped with along the vertical direction (such as
Up and down direction shown in FIG. 1) guide post 11 that extends, lower bracket 1 is equipped with the guide groove 12 that cooperates with guide post 11.Guide post
11 can be cylindrical body or multiedge cylinder, scale can be set in guide post 11, guide post 11 and guide groove 12 are to lower branch
Being mutually shifted with guiding role between frame 1 and upper bracket 2.In addition, also accurate lower of the control of guide post 11 and guide groove 12
Moving distance between frame 1 and upper bracket 2.
Further, as depicted in figs. 1 and 2, guide post 11 be it is multiple, guide groove 12 be it is multiple and with multiple guide posts 11
It corresponds.The stability of relative motion between upper bracket 2 and lower bracket 1 is improved as a result, is reduced inclined in motion process
Shift error allows shielding piece 22 and thimble 23 to be moved to accurate position, thereby reduces the difficulty of test, improve survey
The efficiency of examination.
Some embodiments according to the present utility model, as shown in figure 3, the test fixture 100 for circuit board further includes：Gu
Determine part 4, fixing piece 4 is connect with lower bracket 1, and upper bracket 2 is movably arranged on fixing piece 4 in the direction towards lower bracket 1
Mobile (the side from the bottom to top as shown in Figure 3 in (direction from top to bottom as shown in Figure 3) and the direction of separate lower bracket 1
To).It can be equipped with the limiting slot of rectangular extension along its length on fixing piece 4, can be equipped on upper bracket 2 and cooperate with limiting slot
Retention bead, fixing piece 4 can promote the stability of relative motion between upper bracket 2 and lower bracket 1, reduce in motion process
Offset error, allow shielding piece 22 and thimble 23 be moved to accurate position, thereby reduce the difficulty of test, promoted
The efficiency of test.
Further, as shown in figure 3, fixing piece 4 is two and is located at the opposite two sides (left side as shown in Figure 3 of lower bracket 1
Side and right side).Fixing piece 4 can further promote the stability of relative motion between upper bracket 2 and lower bracket 1, further subtract
Offset error in few motion process, allows shielding piece 22 and thimble 23 to be moved to accurate position, further reduced
The difficulty of test improves the efficiency of test.
Some embodiments according to the present utility model, as shown in Figure 1-Figure 3, shielding piece 22 are ferromagnetism steel plate.Conductive gold
Belonging to part has good signal shielding effect, and ferromagnetism steel plate manufacturing process is relatively simple, and manufacturing cost is lower, and the production cycle
Shorter, service life is longer.
Further, shielding piece 22 is Al-alloy parts or steel part.The structural strength of Al-alloy parts and steel part is higher, chemistry
Property is relatively stable, is not easy by acid and alkali corrosion, and manufacturing process is relatively simple, and manufacturing cost is lower, and the production cycle is shorter, uses
It lasts a long time.
Some embodiments according to the present utility model, as shown in Figure 1-Figure 3, shielding piece 22 meet with a thickness of d, d：
0.3mm≤d≤0.5mm.As a result, under the premise of guaranteeing the structural strength of shielding piece 22, the manufacture for reducing shielding piece 22 is used
Material reduces the weight and manufacturing cost of shielding piece 22.Further, it is also possible to shielding 22 the space occupied of piece be reduced, so that test
Jig 100 is more compact.
Some embodiments according to the present utility model, as shown in Figure 4 and Figure 5, the edge of shielding piece 22 is beyond aperture 31
Edge.Shielding piece 22 can block aperture 31 completely as a result, so as to realize being fully sealed to shield bracket 3, and then subtract
Lack the signal interference between module, improves the accuracy rate of test.
Further, as shown in Figure 4 and Figure 5, it is L that the edge for shielding piece 22, which exceeds the length at the edge of aperture 31, and L is full
Foot：1mm≤L≤3mm.Thus, it is possible to guarantee that shield piece 22 blocks aperture 31 completely, meanwhile, guaranteeing to block aperture completely
Under the premise of 31, reduce the materials being fabricated of shielding piece 22, reduces the weight and manufacturing cost of shielding piece 22.
Further, as shown in Figure 4 and Figure 5, L meets：L=2mm.Thus, it is possible to be further ensured that shielding piece 22 is complete
Aperture 31 is blocked, so as to realize being fully sealed to shield bracket 3, reduces the signal interference between module, is promoted
The accuracy rate of test.Further, it is also possible to shielding 22 the space occupied of piece be reduced, so that test fixture 100 is more compact.
Some embodiments according to the present utility model, the shape of aperture 31 are round, ellipse or polygon.For example,
In embodiment shown in Fig. 4, the shape of aperture 31 can be circle, and circular manufacturing process is relatively simple, and technique more at
It is ripe.Specifically, the shape of aperture 31 can carry out selection design according to actual needs.Preferably, the shape and shielding of aperture 31
The shape of piece 22 is identical.
Below with reference to the accompanying drawings the test fixture for circuit board according to one specific embodiment of the utility model is described
100.It is worth understanding, it is described below to be merely illustrative rather than to the concrete restriction of the utility model.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, the test fixture 100 for circuit board of the utility model embodiment, packet
It includes：Lower bracket 1, locating rod 21, elastic component 212 and upper bracket 2.
Specifically, as shown in Figure 1, Figure 2 and Figure 4, circuit board is mainboard, multiple modules is provided on circuit board, such as penetrate
Frequency module, Wireless Fidelity (WiFi, wireless fidelity) module, sensor module etc..Upper bracket 2 is equipped with vertically
The guide post 11 that direction (as shown in Figure 1 is upper and lower rectangular) extends, lower bracket 1 are equipped with the guide groove cooperated with guide post 11
12, guide groove 12 is multiple and corresponds with multiple guide posts 11.Circuit board is adapted for placement in the upper surface of lower bracket 1 (such as
Upper surface shown in FIG. 1) on, circuit board is equipped with shield bracket 3, and the top of shield bracket 3 has aperture 31, the shape of aperture 31
Shape is circle, is additionally provided with multiple test points on circuit board.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, locating rod 21 is threaded through on upper bracket 2, the separate lower bracket 1 of locating rod 21
One end (upper end as shown in Figure 1) be equipped with locating part 211, when upper bracket 2 be directed away from lower bracket 1 direction (as shown in Figure 1
Direction from the bottom to top) move a certain distance after, the upper surface (upper surface as shown in Figure 1) of locating part 211 and upper bracket 2
It only supports, shielding piece 22 is located on the end face of one end (lower end as shown in Figure 1) of the close lower bracket 1 of locating rod 21, and is shielded
Piece 22 and aperture 31 are opposite, and shielding piece 22 can block aperture 31.Shielding piece 22 be steel part, shielding piece 22 with a thickness of d, d is full
Foot：0.3mm≤d≤0.5mm.It is opened in addition, the edge that the edge of shielding piece 22 exceeds the edge of aperture 31, and shields piece 22 exceeds
The length at the edge in hole 31 is L, and L meets：L=2mm.
As shown in Figure 1, Figure 2 and shown in Fig. 4, elastic component 212 is set in locating rod 21, and elastic component 212 is located at shielding piece 22
Between the lower surface of upper bracket 2.Upper bracket 2 is spaced apart with lower bracket 1 and is located at top (as shown in Figure 1 upper of lower bracket 1
Side), elastic component 212 can drive upper bracket 2 mobile in the direction towards lower bracket 1 and the direction far from lower bracket 1, upper bracket 2
On be additionally provided with multiple thimbles 23, multiple thimbles 23 are corresponded with multiple test points, when upper bracket 2 is towards lower bracket 1 mobile one
When set a distance, thimble 23 and corresponding test point contact.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, circuit board at work, is placed on lower bracket 1 first by test fixture 100
On, mobile upper bracket 2 moves upper bracket 2 towards the direction of lower bracket 1, when the shielding piece 22 of 21 lower end of locating rod start with
When aperture 31 contacts, upper bracket 2 is slowly moved down, using the elastic force of elastic component 212, so that shielding piece 22 and aperture 31 are tight
Closely connected conjunction.Test equipment is then turned on, so as to realize the basic functions such as calibration, comprehensive survey, electric current, WIFI to circuit board
Test.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (15)
1. a kind of test fixture for circuit board, which is characterized in that including：
Lower bracket, the circuit board are adapted for placement on the upper surface of the lower bracket, and the circuit board is equipped with shield bracket,
The top of the shield bracket has aperture, is additionally provided with multiple test points on the circuit board；
Upper bracket, the upper bracket are spaced apart with the lower bracket and are located at the top of the lower bracket, and the upper bracket can be
Direction towards the lower bracket and the direction far from the lower bracket are mobile, the table towards the lower bracket of the upper bracket
Face is equipped with shielding piece, and the shielding piece is opposite with the aperture, and multiple thimbles, multiple tops are additionally provided on the upper bracket
Needle and multiple test points correspond, when the upper bracket is moved a certain distance towards the lower bracket, the thimble
With the corresponding test point contact, the shielding piece blocks the aperture.
2. the test fixture according to claim 1 for circuit board, which is characterized in that further include：
Locating rod, the locating rod are located on the upper bracket and extend towards the lower bracket, and the shielding piece is located at described
On the end face of one end of the close lower bracket of locating rod.
3. the test fixture according to claim 2 for circuit board, which is characterized in that the locating rod is threaded through described
On upper bracket, one end far from the lower bracket of the locating rod is equipped with locating part, when the upper bracket be directed away from it is described
After the direction of lower bracket moves a certain distance, the upper surface of the locating part and the upper bracket is only supported, and the test fixture is also
Including：
Elastic component, the elastic component are set in the locating rod, and the elastic component is located at the shielding piece and the upper branch
Often to drive the shielding piece towards close to the movement of the direction of the lower bracket between the lower surface of frame.
4. the test fixture according to claim 2 for circuit board, which is characterized in that the locating rod is threaded through described
On upper bracket, one end far from the lower bracket of the locating rod is equipped with locating part, and the test fixture further includes：
Elastic component, the elastic component be set in the locating rod and be located at the locating part and the upper bracket upper surface it
Between, one end close to the locating part of the elastic component is connect often to drive the shielding piece towards close with the locating part
The direction of the lower bracket is mobile.
5. the test fixture according to claim 1 for circuit board, which is characterized in that the upper bracket is equipped with along upper
The guide post that lower direction extends, the lower bracket are equipped with the guide groove cooperated with the guide post.
6. the test fixture according to claim 5 for circuit board, which is characterized in that the guide post is multiple, institute
Guide groove is stated to be multiple and correspond with multiple guide posts.
7. the test fixture according to claim 1 for circuit board, which is characterized in that further include：
Fixing piece, the fixing piece are connect with the lower bracket, the upper bracket be movably arranged on the fixing piece with
Direction towards the lower bracket and the direction far from the lower bracket are mobile.
8. the test fixture according to claim 7 for circuit board, which is characterized in that the fixing piece be two and
In the opposite two sides of the lower bracket.
9. the test fixture according to claim 1 for circuit board, which is characterized in that the shielding piece is conductive metal
Part.
10. the test fixture according to claim 9 for circuit board, which is characterized in that the shielding piece is aluminium alloy
Part or steel part.
11. the test fixture according to claim 1 for circuit board, which is characterized in that it is described shielding piece with a thickness of
D, the d meet：0.3mm≤d≤0.5mm.
12. the test fixture according to claim 1 for circuit board, which is characterized in that the edge of the shielding piece is super
The edge of the aperture out.
13. the test fixture according to claim 12 for circuit board, which is characterized in that the edge of the shielding piece is super
The length at the edge of the aperture is L out, and the L meets：1mm≤L≤3mm.
14. the test fixture according to claim 13 for circuit board, which is characterized in that the L meets：L=2mm.
15. the test fixture according to claim 1 for circuit board, which is characterized in that the shape of the aperture is circle
Shape, ellipse or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820426590.8U CN208109997U (en) | 2018-03-27 | 2018-03-27 | test fixture for circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820426590.8U CN208109997U (en) | 2018-03-27 | 2018-03-27 | test fixture for circuit board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111447729A (en) * | 2020-04-17 | 2020-07-24 | Oppo广东移动通信有限公司 | Circuit board assembly, electronic device and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111447729A (en) * | 2020-04-17 | 2020-07-24 | Oppo广东移动通信有限公司 | Circuit board assembly, electronic device and test method |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |