CN208334571U - A kind of Reliability of PCB test fixture - Google Patents
A kind of Reliability of PCB test fixture Download PDFInfo
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- CN208334571U CN208334571U CN201821043127.1U CN201821043127U CN208334571U CN 208334571 U CN208334571 U CN 208334571U CN 201821043127 U CN201821043127 U CN 201821043127U CN 208334571 U CN208334571 U CN 208334571U
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Abstract
The utility model discloses a kind of Reliability of PCB test fixtures, fixture includes pedestal and three clamping mechanisms, pedestal includes level board vertical plate, one printed circuit board of clamping mechanism clamping, three printed circuit boards are respectively first circuit board, second circuit board and tertiary circuit plate, clamping first circuit board and second circuit board on level board, and the positional relationship of the two are as follows: on the basis of the first circuit board after installing, second circuit board is rotated by 90 ° in the horizontal plane with respect to first circuit board, clamping tertiary circuit plate on vertical plate；Or clamping first circuit board and second circuit board in vertical plate, clamping tertiary circuit plate on level board.The utility model can carry out vibration test in three directions mutually perpendicular to circuit board simultaneously, save test resource and test period, accelerate test progress.
Description
Technical field
The utility model relates to electron and electrician and Reliability Engineering fields more particularly to a kind of Reliability of PCB to try
It tests and uses fixture.
Background technique
The core component of electronic product, printed circuit board need to carry out HALT, vibration-temperature in research and development and verification process
The reliability tests such as degree-humidity combined stress during test, need to carry out clamping to circuit board to fix.In fact, due to electricity
Road plate is different, and size, specification shape is also different, need to develop different fixtures, take time and effort, delay development progress；In addition,
It is general to apply vibration to a direction simultaneously when carrying out reliability test with electromagnetic vibration generator system, if need to be mutual to circuit board
Vertical three directions are tested, then need three times clamping, test three times, process is cumbersome, and the test period is longer, is difficult to meet current
The development progress requirement of product shortened.
Utility model content
The technical problems to be solved in the utility model be overcome the deficiencies of the prior art and provide one kind can simultaneously to printing
Orthogonal three directions of circuit board carry out vibration test, save test resource and test period, accelerate the print of test progress
Circuit board reliability test fixture processed.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of Reliability of PCB test fixture, including pedestal and three clamping mechanisms, the pedestal include water
Plate and the vertical plate being fixed on level board, one printed circuit board of each clamping mechanism clamping, three printings electricity of clamping
Road plate is respectively first circuit board, second circuit board and tertiary circuit plate, clamping first circuit board and second on the level board
Circuit board, and the positional relationship of the two are as follows: on the basis of the first circuit board after installing, second circuit board is with respect to first circuit board
It is rotated by 90 ° in the horizontal plane, clamping tertiary circuit plate on the vertical plate；Or clamping first circuit board and in the vertical plate
Two circuit boards, the positional relationship of the two are as follows: on the basis of the first circuit board after installing, second circuit board is with respect to first circuit board
It is rotated by 90 ° in vertical plane, clamping tertiary circuit plate on the level board.
As a further improvement of the above technical scheme, it is preferred that it is logical that the quadrangle of the printed circuit board is equipped with installation
Hole, the clamping mechanism are the first clamping assembly, and first clamping assembly includes and four installation through-holes pair of printed circuit board
The four clamping plates answered, the clamping plate are fixed on level board or vertical plate, and fastener is equipped in the installation through-hole, described
Clamping plate is equipped with the first mounting hole, and the fastener passes through installation through-hole and is threadedly coupled with the first mounting hole.
As a further improvement of the above technical scheme, it is preferred that the second mounting hole on the clamping plate, second peace
It fills and is equipped with fastening screw in hole, the fastening screw is threadedly coupled with level board or vertical plate.
As a further improvement of the above technical scheme, it is preferred that second mounting hole is long lumbar hole, the level board
Or it is covered with the threaded hole that can cooperate with fastening screw on vertical plate, corresponding multiple threaded holes immediately below each long lumbar hole.
As a further improvement of the above technical scheme, it is preferred that clamping plate one end have lug boss, described first
Mounting hole is located on lug boss.
As a further improvement of the above technical scheme, it is preferred that the fastener is fastening screw.
As a further improvement of the above technical scheme, it is preferred that the level board is equipped with multiple for firm banking
Installation counterbore.
As a further improvement of the above technical scheme, it is preferred that the vertical plate is welded on level board, and by adding
Strengthening tendons support.
As a further improvement of the above technical scheme, it is preferred that the level board is L-shaped integrated molding with vertical plate
Bending plate.
As a further improvement of the above technical scheme, it is preferred that the clamping mechanism is the second clamping assembly, described the
Two clamping assemblies include at least a pair of of clamping plate, and every a pair of clamping plate is clamped and is fixed on level board or vertical plate by locking member,
The opposite side of every a pair of clamping plate is equipped with spaced apart thimble in a row, and the thimble quantity of every a pair of clamping plate is identical and position is heavy
It closes, the printed circuit board is clamped between the thimble of every a pair of of clamping plate.
As a further improvement of the above technical scheme, it is preferred that the locking member is tie down screw, the clamping plate both ends
Equipped with third mounting hole, the tie down screw passes through the third mounting hole of every a pair of of clamping plate and level board or vertical plate screw thread connect
It connects.
As a further improvement of the above technical scheme, it is preferred that the third mounting hole is long lumbar hole, the level board
Or it is covered with the threaded hole that can be threadedly engaged with tie down screw on vertical plate, corresponding multiple threaded holes immediately below each long lumbar hole.
As a further improvement of the above technical scheme, it is preferred that the thimble includes tapering and columnar part, the tapering
Bigger diameter end connect with columnar part, and the bigger diameter end diameter in tapering is greater than columnar part diameter, and the columnar part is arranged on clamping plate,
And pass through a nut check.
As a further improvement of the above technical scheme, it is preferred that the thimble is the screw rod of TBE (threaded both ends), the spiral shell
It is arranged on clamping plate in the middle part of bar, both ends pass through a nut check respectively.
Compared with the prior art, the advantages of the utility model are:
The Reliability of PCB test fixture of the utility model by setting level board and vertical plate and can incite somebody to action
Printed circuit board is fixed on the clamping assembly on level board or vertical plate, can be mutual to printed circuit board simultaneously using the sleeve clamp
Perpendicular three directions carry out vibration test, can only be tested in a direction simultaneously relative to traditional, more save test money
Source and test period accelerate test progress；Installation way is simpler, solid and reliable, meets test for fixture frequency, matter
Requirement in terms of amount, intensity, rigidity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1.
Fig. 2 is the structural schematic diagram of pedestal in the utility model embodiment 1.
Fig. 3 is the structural schematic diagram of clamping plate in the utility model embodiment 1.
Fig. 4 is the schematic diagram of 1 three printed circuit boards of clamping of the utility model embodiment.
Fig. 5 is the signal in orthogonal three directions that printed circuit board needs to vibrate in the utility model embodiment 1
Figure.
Fig. 6 is the structural schematic diagram of the utility model embodiment 2.
Fig. 7 is 2 middle clamp plate structural schematic diagram of the utility model embodiment.
Fig. 8 is the structural schematic diagram of thimble in the utility model embodiment 2.
Fig. 9 is the schematic diagram of 2 three printed circuit boards of clamping of the utility model embodiment.
Each label indicates in figure:
1, printed circuit board；11, first circuit board；12, second circuit board；13, tertiary circuit plate；15, installation through-hole；2,
Pedestal；21, level board；211, counterbore is installed；22, vertical plate；23, threaded hole；24, reinforcing rib；3, the first clamping assembly；31,
Clamping plate；311, the first mounting hole；312, the second mounting hole；313, lug boss；41, fastening screw；42, fastening screw；5, platform
Face；6, the second clamping assembly；61, clamping plate；611, third mounting hole；7, tie down screw；8, thimble；81, tapering；82, columnar part；
83, thimble screw hole；9, nut.
Specific embodiment
The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.
Embodiment 1
As shown in Figures 1 to 5, the Reliability of PCB test fixture of the present embodiment, the quadrangle of printed circuit board 1
It is equipped with installation through-hole 15, fixture includes the first clamping assembly 3 that pedestal 2 and three are used to fix printed circuit board 1, pedestal 2
Including level board 21 and the vertical plate 22 being fixed on level board 21, two are located at vertical plate 22 in three the first clamping assemblies 3
On, one is located on level board 21, and the first clamping assembly 3 includes four corresponding with 1 four installation through-holes 15 of printed circuit board
Clamping plate 31, clamping plate 31 are fixed on level board 21 or vertical plate 22, and fastener is equipped in installation through-hole 15, and clamping plate 31 is set
There is the first mounting hole 311, fastener passes through installation through-hole 15 and is threadedly coupled with the first mounting hole 311.Fastener is specially to fasten
Screw 41, or other threaded connectors.
In the present embodiment, three direction of vibration that printed circuit board 1 needs to vibrate are indicated with XYZ axis, as shown in Figure 5.
Printed circuit board 1 is respectively first circuit board 11, second circuit board 12 and tertiary circuit plate 13, the be mounted on vertical plate 22
One circuit board 11 and second circuit board 12 are not overlapped, and the two positional relationship are as follows: on the basis of the first circuit board 11 after installing,
Second circuit board 12 is rotated by 90 ° in vertical plane with respect to first circuit board 11, i.e. each component on two circuit boards mutually hangs down
Directly.E is direction of vibration in Fig. 4, i.e. vertical vibrating, and the direction of vibration of the first circuit board 11 and second circuit board 12 is respectively X
Axis and Y-axis, the direction of vibration of the tertiary circuit plate 13 on level board 21 are Z axis.Each printed circuit board 1 passes through four clamping plates
31 is fixed, and it is firm to stablize.1 orthogonal three direction of printed circuit board can be tested simultaneously using the sleeve clamp, phase
Traditional can only be tested in a direction simultaneously, test resource and test period is more saved, accelerate test progress.Dress
Folder mode is simpler, solid and reliable, meets test for the requirement in terms of fixture frequency, quality, intensity, rigidity.The sleeve clamp
PCB and PCBA board are applicable in.
In the present embodiment, level board 21 is equipped with multiple installation counterbores 211 for firm banking 2, and level board 21 is fixed
On the table top 5 of testing stand, installing in counterbore 211 has connecting screw (not shown), has screw hole (not show in figure on table top 5
Out), its nut top must not be higher than 21 upper horizontal plane of level board after tightening screw, in order to avoid influence printed circuit board 1 and the first dress
The installation and fastening of clip assembly 3.Installation counterbore 211 is set as multiple.The upper part aperture for installing counterbore 211 is big, lower partial hole
Diameter is small, and top and the bottom are smooth hole.Bigger 1~the 3mm of screwhole diameter on lower part aperture ratio table top 5.
In the present embodiment, the second mounting hole 312 on clamping plate 31, the second mounting hole 312 is interior equipped with fastening screw 42, fastens
Screw rod 5 is threadedly coupled with level board 21 or vertical plate 22, while fastening screw 42 is equipped with a nut 9, and nut 9 is against clamping plate
31, for locking fastening screw 42.Further, the second mounting hole 312 is long lumbar hole (long stripes through hole), cloth on level board 21
(in addition to several installation counterbores 211 on level board 21, remaining position is essentially spiral shell to the threaded hole 23 that can completely cooperate with fastening screw 42
Pit 23), each corresponding multiple threaded holes 23 in long lumbar hole underface, in this way, fastening screw 42 during installation can be in long lumbar hole
Sliding, the threaded hole 23 for finding optimum position are fastened, and for different sizes, printed circuit board of different shapes 1, are adjusted
The position for saving clamping plate 31 and fastening screw 42, can be fixed installation, for this purpose, to be able to satisfy different sizes big for same sleeve clamp
Small and shape specification printed circuit board 1 test clamping demand.Fastening screw 42 is identical as the diameter of threaded hole 23, generally takes 10
~18mm.
In the present embodiment, 31 one end of clamping plate has lug boss 313, and the first mounting hole 311 is located on lug boss 313.It is convex
Rise portion 313 purpose be to make the back side of printed circuit board 1 apart from level board 21 farther out, in order to avoid the back side of printed circuit board 1
Element and level board 21 are interfered, and lug boss 313 is cone cell, and tip (the small one end of diameter) is contacted with printed circuit board 1, this
The contact area of sample and printed circuit board 1 is small, can also be dry by the element and clamping plate 31 of proximal edge to avoid printed circuit board 1
It relates to.The part b is the main view of clamping plate 31 in Fig. 3, and the part a is the top view of clamping plate 31.
In the present embodiment, vertical plate 22 is welded on level board 21, and the back side of vertical plate 22 welds three reinforcing rib 24
Support avoids vibration signal transmitting when test from being distorted.Level board 21 and 22 material of vertical plate are aluminium alloy.31 material of clamping plate is also
Aluminium alloy.
The Reliability of PCB test clamping method of the present embodiment is as follows:
Pedestal 1 is put on the table top 5 of testing stand, the spiral shell on counterbore 211 and table top 5 is installed on the level board 21 of pedestal 1
Hole alignment, with fastened by screw, 21 upper horizontal plane of level board must not be higher than at the top of rear nut by tightening；By 13 4 jiaos of tertiary circuit plate
Installation through-hole 15 is tightened between four clamping plates 31 with fastening screw 41 respectively, and four clamping plates 31 are looked on level board 21
To suitable 23 position of threaded hole, fixation between clamping plate 31 and level board 21 is tightened with fastening screw 42；By abovementioned steps
First circuit board 11 and second circuit board 12 are fixed on vertical plate 22.
In the present embodiment, the vibrational excitation direction of the table top 5 of testing stand is vertical direction, for this purpose, fixed in level board 21
One printed circuit board 1 fixes two printed circuit boards 1 in vertical plate 22, to realize printed circuit board 1 orthogonal three
It is tested in direction.
In addition to above-mentioned mounting means, it can also be and fix two printed circuit boards 1 on level board 21, it is fixed in vertical plate 22
One printed circuit board 1, the vibrational excitation direction of table top 5 is horizontal direction at this time, can realize that printed circuit board 1 is orthogonal
It is tested in three directions.
Embodiment 2
As shown in Fig. 6 to 9, the Reliability of PCB test fixture of the present embodiment shares a bottom with embodiment 1
Seat 1, but installation way is different:
Specifically, and including pedestal 2 and three for fixing the second clamping assembly 6 of printed circuit board 1, pedestal 2 is wrapped
The vertical plate 22 for including level board 21 and being fixed on level board 21, two are located on level board 21 in three the second clamping assemblies 6,
One is located on vertical plate 22, and the second clamping assembly 6 includes two pairs of clamping plates 61, and every a pair of clamping plate 61 is clamped and consolidated by locking member
Due on level board 21 or vertical plate 22, the opposite side of every a pair of clamping plate 61 is equipped with spaced apart thimble 8 in a row, each
And position identical to 8 quantity of thimble of clamping plate 61 is overlapped, and printed circuit board 1 is clamped between the thimble 8 of every a pair of of clamping plate 61.
In the present embodiment, the first circuit board 11 and second circuit board 12 being mounted on level board 21 are not overlapped, the two
Relationship are as follows: on the basis of the first circuit board 11 after installing, second circuit board 12 rotates first circuit board 11 in the horizontal plane
The direction of vibration of progress clamping after 90 °, the first circuit board 11 and second circuit board 12 is respectively X-axis and Y-axis, vertical plate 22
On tertiary circuit plate 13 direction of vibration be Z axis, as shown in figure 9, F be direction of vibration, horizontal vibration.
Each clamping plate 61 is equipped with two rows of thimbles 8, in this way when clamping printed circuit board 1 double thimble 8 than stronger.Clamping plate
61 logarithm is also not necessarily limited to two pairs, with specific reference to printed circuit board 1 length and set.The present embodiment fixes a printed circuit
Plate 1 uses two pairs of clamping plates 61.
In the present embodiment, locking member is tie down screw 7, and 61 both ends of clamping plate are equipped with third mounting hole 611, and tie down screw 7 is worn
The third mounting hole 611 for crossing every a pair of of clamping plate 61 is threadedly coupled with level board 21 or vertical plate 22.In every a pair of clamping plate 61, locking
The part that screw rod 7 stretches out clamping plate 61 is equipped with nut 9, for locking.The part d is the main view of clamping plate 61 in Fig. 7, and the part c is folder
The top view of plate 61.
In the present embodiment, third mounting hole 611 is long lumbar hole, and being covered on level board 21 or vertical plate 22 can be with tie down screw
7 threaded holes 23 being threadedly engaged, each corresponding multiple threaded holes 23 in long lumbar hole underface, effect is as described in Example 1, and
For different sizes, printed circuit board of different shapes 1, the position of clamping plate 61 and tie down screw 7 is adjusted, can be consolidated
Dingan County's dress, for this purpose, same sleeve clamp is able to satisfy the test clamping demand of different sizes and shape specification printed circuit board 1.
Also multiple installation counterbores 211 for firm banking 2, installation side are provided in the present embodiment, on level board 21
Formula is as described in Example 1.There is connecting screw in installation counterbore 211, its nut top must not be higher than level board 21 after tightening screw
Upper horizontal plane, in order to avoid influence the installation and fastening of printed circuit board 1 and the second clamping assembly 6.61 material of clamping plate is aluminium alloy.
In the present embodiment, thimble 8 is high-strength stainless steel comprising tapering 81 and columnar part 82, the bigger diameter end in tapering 81
It being connect with columnar part 82, and the bigger diameter end diameter in tapering 81 is greater than 82 diameter of columnar part, clamping plate 61 is equipped with two rows of centre holes 83,
Columnar part 82 is arranged on centre hole 83, and is locked by a nut 9, and thimble 8 can be fixed on clamping plate 61 by this structure, if
The purpose for setting tapering 81 is that the lesser one end of diameter is contacted with printed circuit board 1, and contact area is small, will not be with printed circuit board 1
On other elements interference.The diameter of columnar part 82 is 5~10mm, and the diameter of 81 miner diameter end of tapering is 2~10mm.If printing electricity
Gap on road plate 1 is bigger, and the diameter of 81 miner diameter end of tapering can also increase accordingly.The diameter of centre hole 83 is 5~10mm,
It is corresponding with columnar part 82.
The test fixture of the present embodiment can have the printed circuit board 1 of installation through-hole 15 both with clamping, can also with clamping without
The printed circuit board 1 of installation through-hole 15, clamping method is as follows:
Pedestal 1 is put on the table top 5 of testing stand, the spiral shell on counterbore 211 and table top 5 is installed on the level board 21 of pedestal 1
Hole alignment, with fastened by screw, 21 upper horizontal plane of level board must not be higher than at the top of rear nut by tightening；All thimbles 8 are all solid respectively
It is scheduled on respective clamping plate 61, for the installation on level board 21, first leads to the clamping plate 61 below one pair of them clamping plate 61
It crosses tie down screw 7 to be mounted on level board 21, then be put in first circuit board 11 on the thimble 8 of following clamping plate 61, then
Clamping plate 61 above is installed, and contacts the thimble 8 of top with printed circuit board 1, two clamping plates 61 is locked, makes upper and lower
Thimble 8 clamps first circuit board 11, and suitable clearance position is found on first circuit board 11, with thimble 8 by printed circuit board 1
It is fixed, can by adjusting position of the tie down screw 7 in third mounting hole 611 (long lumbar hole), find suitable threaded hole 23 into
Row is fixed, and second circuit board 12 is similarly installed, and after the circuit board installation on level board 22, continues installation level with identical step
Tertiary circuit plate 13 on plate 21.
In the present embodiment, the vibrational excitation direction of the table top 5 of testing stand is horizontal direction, for this purpose, fixed in level board 21
Two printed circuit boards 1 fix a printed circuit board 1 in vertical plate 22, to realize printed circuit board 1 orthogonal three
It is tested in direction.
In addition to above-mentioned mounting means, it can also be and fix a printed circuit board 1 on level board 21, it is fixed in vertical plate 22
Two printed circuit boards 1, the vibrational excitation direction of table top 5 is vertical direction at this time, can realize that printed circuit board 1 is orthogonal
It is tested in three directions.
Embodiment 3
The Reliability of PCB test fixture of the present embodiment is substantially the same manner as Example 2, the difference is that only:
In the present embodiment, for thimble 8 using the screw rod (not shown) of TBE (threaded both ends), screw rod middle part is arranged in clamping plate 61
On, both ends pass through a nut 9 locking respectively.Screw rod is locked on clamping plate 61 by two nuts 9, and screw rod refers to more thinner
Screw rod, it is intended to reduce and the contact area of printed circuit board 1.
Embodiment 4
The Reliability of PCB test fixture of the present embodiment is substantially the same manner as Example 2, the difference is that only:
In the present embodiment, a printed circuit board 1 is fixed using a pair of of clamping plate 61, clamping plate 61 is wider, so as to compare
It is firm to clamp printed circuit board 1.Correspondingly, the third mounting hole 611 of one end is set as two since 61 width of clamping plate increases
A, one end is locked with two tie down screws 7, more reliable and more stable.
Embodiment 5
The Reliability of PCB test fixture of the present embodiment is substantially the same manner as Example 1, the difference is that only:
In the present embodiment, level board 21 and vertical plate 22 are L-shaped integrally formed bending plate.
The Reliability of PCB test fixture of the utility model for different sizes, different shape, welded
It is applicable for connecing with the printed circuit board 1 of unwelded component.It, can if need to only be vibrated to 1 one modes of printed circuit board
Printed circuit board 1 is directly anchored on the table top 5 of testing stand using the first clamping assembly 3 or the second clamping assembly 6, is not necessarily to bottom
Seat 1.
The size of each nut 9 can be different according to its requirement in above embodiments.
What above embodiments provided is that three printed circuit boards 1 of clamped one time certainly can also be in level board 21 and vertical plate
22 each two or more three printed circuit boards 1 of clamping.
Other than the above various embodiments, as the same design of the utility model, it can also make to be that setting three is mutually hung down
Straight plate, one printed circuit board 1 of clamping on each plate, also may be implemented can be orthogonal to printed circuit board 1 simultaneously
Three directions carry out vibration test.
Although the utility model has been disclosed with preferred embodiment as above, it is not intended to limit the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model technical spirit to the above reality
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.
Claims (14)
1. a kind of Reliability of PCB test fixture, which is characterized in that including pedestal (2) and three clamping mechanisms, institute
Stating pedestal (2) includes level board (21) and the vertical plate (22) being fixed on level board (21), each clamping mechanism clamping one
Printed circuit board (1), three printed circuit boards (1) of clamping are respectively first circuit board (11), second circuit board (12) and
Three-circuit plate (13), clamping first circuit board (11) and second circuit board (12) on the level board (21), and the position of the two
Relationship are as follows: on the basis of the first circuit board (11) after installing, second circuit board (12) is with respect to first circuit board (11) in level
It is rotated by 90 ° in face, clamping tertiary circuit plate (13) on the vertical plate (22)；Or interior first circuit of clamping of vertical plate (22)
Plate (11) and second circuit board (12), the positional relationship of the two are as follows: on the basis of the first circuit board (11) after installing, the second electricity
Road plate (12) is rotated by 90 ° in vertical plane with respect to first circuit board (11), clamping tertiary circuit plate on the level board (21)
(13)。
2. Reliability of PCB test fixture according to claim 1, it is characterised in that: the printed circuit board
(1) quadrangle is equipped with installation through-hole (15), and the clamping mechanism is the first clamping assembly (3), first clamping assembly (3)
Including four clamping plates (31) corresponding with printed circuit board (1) four installation through-hole (15), the clamping plate (31) is fixed on
On level board (21) or vertical plate (22), fastener is equipped in the installation through-hole (15), the clamping plate (31) is equipped with first
Mounting hole (311), the fastener pass through installation through-hole (15) and are threadedly coupled with the first mounting hole (311).
3. Reliability of PCB test fixture according to claim 2, it is characterised in that: the clamping plate (31)
Upper second mounting hole (312), second mounting hole (312) is interior to be equipped with fastening screw (42), the fastening screw (42) and water
Plate (21) or vertical plate (22) are threadedly coupled.
4. Reliability of PCB test fixture according to claim 3, it is characterised in that: second mounting hole
(312) it is long lumbar hole, the threaded hole that can cooperate with fastening screw (42) is covered on the level board (21) or vertical plate (22)
(23), corresponding multiple threaded holes (23) immediately below each long lumbar hole.
5. according to Reliability of PCB test fixture described in claim 2 to 4 any one, it is characterised in that: institute
Clamping plate (31) one end is stated with lug boss (313), first mounting hole (311) is located on lug boss (313).
6. according to Reliability of PCB test fixture described in claim 2 to 4 any one, it is characterised in that: institute
Stating fastener is fastening screw (41).
7. according to Reliability of PCB test fixture described in claim 2 to 4 any one, it is characterised in that: institute
Level board (21) are stated equipped with multiple installation counterbores (211) for firm banking (2).
8. according to Reliability of PCB test fixture described in claim 2 to 4 any one, it is characterised in that: institute
It states vertical plate (22) to be welded on level board (21), and is supported by reinforcing rib (24).
9. according to Reliability of PCB test fixture described in claim 2 to 4 any one, it is characterised in that: institute
Stating level board (21) and vertical plate (22) is L-shaped integrally formed bending plate.
10. Reliability of PCB test fixture according to claim 1, it is characterised in that: the clamping mechanism
For the second clamping assembly (6), second clamping assembly (6) includes at least a pair of of clamping plate (61), and every a pair of clamping plate (61) passes through
Locking member is clamped and is fixed on level board (21) or vertical plate (22), and the opposite side of every a pair of clamping plate (61) is equipped in a row
Thimble (8) quantity of spaced apart thimble (8), every a pair of clamping plate (61) is identical and position is overlapped, the printed circuit board (1)
It is clamped between the thimble (8) of every a pair of of clamping plate (61).
11. Reliability of PCB test fixture according to claim 10, it is characterised in that: the locking member is
Tie down screw (7), clamping plate (61) both ends are equipped with third mounting hole (611), and the tie down screw (7) passes through every a pair of of clamping plate
(61) third mounting hole (611) is threadedly coupled with level board (21) or vertical plate (22).
12. Reliability of PCB test fixture according to claim 11, it is characterised in that: the third installation
Hole (611) is long lumbar hole, is covered with the screw thread that can be threadedly engaged with tie down screw (7) on the level board (21) or vertical plate (22)
Hole (23), each corresponding multiple threaded holes (23) in long lumbar hole underface.
13. Reliability of PCB test fixture described in 0 to 12 any one according to claim 1, it is characterised in that:
The thimble (8) includes tapering (81) and columnar part (82), and the bigger diameter end of the tapering (81) is connect with columnar part (82), and is bored
The bigger diameter end diameter in portion (81) is greater than columnar part (82) diameter, and the columnar part (82) is arranged on clamping plate (61), and passes through one
Nut (9) locking.
14. Reliability of PCB test fixture described in 0 to 12 any one according to claim 1, it is characterised in that:
The thimble (8) is the screw rod of TBE (threaded both ends), is arranged on clamping plate (61) in the middle part of the screw rod, both ends pass through a nut respectively
(9) it locks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043127.1U CN208334571U (en) | 2018-07-03 | 2018-07-03 | A kind of Reliability of PCB test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821043127.1U CN208334571U (en) | 2018-07-03 | 2018-07-03 | A kind of Reliability of PCB test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN208334571U true CN208334571U (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821043127.1U Active CN208334571U (en) | 2018-07-03 | 2018-07-03 | A kind of Reliability of PCB test fixture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896778A (en) * | 2020-07-15 | 2020-11-06 | 中车株洲电力机车研究所有限公司 | HALT test fixture for PCBA plug-in and mounting method |
| CN112033473A (en) * | 2020-09-15 | 2020-12-04 | 中车株洲电力机车研究所有限公司 | Combined evaluation test method for welding reliability of electronic component |
| CN113916479A (en) * | 2021-09-28 | 2022-01-11 | 河北汉光重工有限责任公司 | Triaxial vibration device and method capable of fixing circuit boards of various sizes |
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2018
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| CN111896778A (en) * | 2020-07-15 | 2020-11-06 | 中车株洲电力机车研究所有限公司 | HALT test fixture for PCBA plug-in and mounting method |
| CN111896778B (en) * | 2020-07-15 | 2023-05-26 | 中车株洲电力机车研究所有限公司 | HALT test fixture for PCBA plug-in and mounting method |
| CN112033473A (en) * | 2020-09-15 | 2020-12-04 | 中车株洲电力机车研究所有限公司 | Combined evaluation test method for welding reliability of electronic component |
| CN113916479A (en) * | 2021-09-28 | 2022-01-11 | 河北汉光重工有限责任公司 | Triaxial vibration device and method capable of fixing circuit boards of various sizes |
| CN113916479B (en) * | 2021-09-28 | 2024-04-12 | 河北汉光重工有限责任公司 | Triaxial vibration device and method capable of fixing circuit boards with various sizes |
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