CN209215437U - Circuit board tester switch card - Google Patents
Circuit board tester switch card Download PDFInfo
- Publication number
- CN209215437U CN209215437U CN201821973988.XU CN201821973988U CN209215437U CN 209215437 U CN209215437 U CN 209215437U CN 201821973988 U CN201821973988 U CN 201821973988U CN 209215437 U CN209215437 U CN 209215437U
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- China
- Prior art keywords
- pcb board
- switch card
- crossbeam
- circuit board
- pin needle
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Abstract
The utility model provides a kind of circuit board tester switch card, it includes pcb board, multiple terminals, crossbeam and pressing plate, wherein there is on pcb board the test circuit for measurement circuit plate, the connection via hole being electrically connected with test circuit is provided on pcb board, multiple terminals are connected to the side of pcb board one end, including fixed body and through more pin needles being connected on fixed body, one end of pin needle is electrically connected in connection via hole, crossbeam is connected to the side of pcb board, pressing plate is connected to the side of pcb board, for forming clamping pressing to pcb board and terminal jointly with crossbeam.The circuit board tester switch card of the utility model is by connecting multiple terminals in pcb board one end, so that when there is damage problem in the somewhere of terminal, only the terminal can be changed, it is with strong points, save the cost, and be connected as one by pressing plate by what multiple terminals, pcb board and crossbeam consolidated, stable structure is reliable, long service life.
Description
Technical field
The utility model relates to wiring board testing equipment field, in particular to a kind of circuit board tester switch card.
Background technique
Printed wiring board is the supplier of electronic component electrical connection, and the major advantage using wiring board is to greatly reduce
The mistake of wiring and assembly, improves the gentle productive labor rate of Automated water, all electrical equipments or control system can all answer
With printed wiring board, wherein it is typically necessary after circuit board making and is tested using circuit board tester；
Wherein, general wiring board universal testing machine is to be surveyed by test machine switch card to wiring board electric connection
Examination, mainly having double density universal testing machine switch card, (standard network compartment for 70mil) and quad density universal testing machine away from opening
Close that (for standard network compartment away from for 50mil), the terminal on switch card in the prior art is integral type, any local damage
It all will be so that entire terminal be scrapped, it is difficult to it repairs, very waste of resource, meanwhile, there is also terminals for switch card in the prior art
It is connect with crossbeam and is not sufficiently stable reliable problem, so that switch card is easier to damage, the service life is short for this meeting.
Therefore need to provide a kind of circuit board tester switch card to solve above-mentioned technical problem.
Utility model content
The utility model provides a kind of circuit board tester switch card, by connecting multiple terminals in pcb board one end, makes
When damage problem occurs in the somewhere of proper terminal, only the terminal can be changed, with strong points, save the cost, and pass through pressure
Plate is connected as one what multiple terminals, pcb board and crossbeam consolidated, and stable structure is reliable, to solve in the prior art open
Terminal on outpost is integral type, and any local damage all will be so that entire terminal be scrapped, it is difficult to be repaired, be wasted very much
The problem of resource, and it is not sufficiently stable reliable since terminal is connect with crossbeam, so that switch card is easier to damage, the service life is short to be asked
Topic.
In order to solve the above technical problems, the technical solution of the utility model are as follows: a kind of circuit board tester switch card, packet
It includes:
Pcb board has the test circuit for measurement circuit plate, is provided on the pcb board and the test circuit
The connection via hole of electric connection；
Terminal is connected to the side of described pcb board one end, including fixed body and through being connected on the fixed body
More pin needles, one end of the pin needle are electrically connected in the connection via hole, and multiple institutes are connected on the pcb board
State terminal；
Crossbeam is connected to the side of the pcb board；
Pressing plate is connected to the other side of the pcb board, is used for the crossbeam jointly to the pcb board and the terminal
Form clamping pressing.
In the present invention, multiple connection via holes are provided on the pcb board, multiple connection via holes are in
Matrix arrangement, the pin needle on multiple terminals are arranged and consistent with multiple connection via holes in matrix.
Wherein, the center of the adjacent pin needle is away from for 1mm or 0.898mm.
In the present invention, the pin needle and the fixed body are molded as one structure by way of injection molding.
Further, the pin needle is L-shape, the both ends of the pin needle extend respectively the fixed body it is adjacent two
On a side, being fitted on the side of the pcb board on one side for pin needle is extended on the fixed body, and the pin needle
One end extends in the connection via hole, and the extending direction of the other end is parallel to the extended planar of the pcb board.
In the present invention, the two sides of a crossbeam are respectively connected with one piece of pcb board, are arranged on the crossbeam
There is link slot, the link slot penetrates through the crossbeam, and the link slot includes the first opposite opening, and is located at described in two
The second opening between first opening, the fixed body of one piece of pcb board connection are connected to described from first opening
In link slot.
Wherein, except the second opening of the fixed body link slot, the pin needle is far from the pcb board
One end is located at fixed body protrusion on the side except the link slot.
In addition, being additionally provided with locating slot on the crossbeam, the locating slot and first opening are located at the same side, described
Pcb board and the pressing plate limit in the locating slot.
Further, pin passes through two pieces of pressing plates, two pieces of pcb boards and the crossbeam and is fixedly connected.
In the present invention, insulation protection piece is additionally provided between the pressing plate and the pcb board.
The utility model compared to the prior art, it has the advantage that: the circuit board tester switch card of the utility model
By connecting multiple terminals in pcb board one end, so that can only be torn open to the terminal when damage problem occurs in the somewhere of terminal
It changes, with strong points, save the cost, and is connected as one by pressing plate by what multiple terminals, pcb board and crossbeam consolidated, structure
It is reliable and stable, long service life.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below in embodiment
Required attached drawing is briefly described, and the accompanying drawings in the following description is only that the section Example of the utility model is corresponding
Attached drawing.
Fig. 1 is the configuration schematic diagram of the preferred embodiment of the circuit board tester switch card of the utility model.
Fig. 2 is the partial enlargement structural representation at the A in Fig. 1.
Fig. 3 is the main view of the circuit board tester switch card of the utility model.
Fig. 4 is the partial enlargement structural representation at the B in Fig. 3.
Fig. 5 is the arrangement schematic diagram of the pin needle of the circuit board tester switch card of the utility model.
Fig. 6 is the structural schematic diagram of the crossbeam of the circuit board tester switch card of the utility model.
Fig. 7 is the schematic diagram of the test circuit of the pcb board of the circuit board tester switch card of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those skilled in the art are obtained without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
Terminal on switch card in the prior art is integral type, and any local damage all will be so that entire terminal
Scrap, it is difficult to repair, very waste of resource, meanwhile, switch card in the prior art there is also terminals connect with crossbeam it is not steady enough
Fixed reliable problem, so that switch card is easier to damage, the service life is short for this meeting.
It the following is a kind of the excellent of circuit board tester switch card that can solve the above technical problem provided by the utility model
Select embodiment.
Referring to Fig.1 and 2, wherein Fig. 1 is the preferred embodiment of the circuit board tester switch card of the utility model
Configuration schematic diagram, Fig. 2 are the partial enlargement structural representation at the A in Fig. 1.
The similar unit of structure is to be given the same reference numerals in the figure.
A kind of preferred embodiment of circuit board tester switch card provided by the utility model are as follows: circuit board tester switch
Card comprising pcb board 11, multiple terminals 13, crossbeam 12, pressing plate 14 and insulation protection piece 15.
Wherein, pcb board 11 has the test circuit for measurement circuit plate, is provided on pcb board 11 and test circuit
Test circuit can be very easily attached, here by the connection via hole of electric connection by connection via hole with pin needle
Connection can be scolding tin connection；
It can refer to Fig. 2, terminal 13 is connected to the side of 11 one end of pcb board, including fixed body 131 and solid through being connected to
Determine more pin needles 132 on body 131, one end of pin needle 132 is electrically connected in connection via hole, connects on pcb board 11
There are multiple terminals 13, be just connected with multiple terminals 13 on one piece of pcb board as shown in figure 1, can also refer to indicate in Fig. 2 two terminals
13；
Crossbeam 12 is connected to the side of pcb board 11；
Pressing plate 14 is connected to the other side of pcb board 11, for forming clamping to pcb board 11 and terminal 13 jointly with crossbeam 12
Pressing；
Insulation protection piece 15 is arranged between pressing plate 14 and pcb board 11, to play insulation to pcb board and pin needle 132
Protective effect.
Specifically, being provided with multiple connection via holes on pcb board 11, multiple connection via holes are arranged in matrix, multiple terminals
Pin needle 132 on 13 is arranged and consistent with multiple connection via holes in matrix, and the pin needle inserting as matrix is arranged in Fig. 2 connects
In the connection via hole on pcb board 11.
In the present embodiment, the center of adjacent pin needle 132 is away from being chosen as 1mm or 0.898mm, in pin needle 132
For the heart away from the distance value D that can refer in Fig. 5, density is enough close, is able to satisfy the test request of high density HDI plate (high density interconnecting board).
Pin needle 132 and fixed body 131 in the present embodiment are molded as one structure by way of injection molding.
It can refer to Fig. 2, pin needle 132 is L-shape, and the both ends of pin needle 132 are extended respectively in adjacent two of fixed body 131
On side, being fitted on the side of pcb board 11 on one side for pin needle 132, and the one of pin needle 132 are extended on fixed body 131
End extend to connection via hole in, the extending direction of the other end be parallel to the extended planar of pcb board 11 and for it is corresponding to be measured
Examination wiring board is electrically connected.
Incorporated by reference to referring to Fig.1 and Fig. 6, wherein Fig. 6 is the knot of the crossbeam of the circuit board tester switch card of the utility model
Structure schematic diagram.
In the present embodiment, the two sides of a crossbeam 12 are respectively connected with one piece of pcb board 11, are provided with link slot on crossbeam 12
121, link slot 121 penetrates through crossbeam 12, and link slot 121 includes the first opposite opening, and is located between two first openings
The second opening, the first opening is the opening at top in the orientation Fig. 6, and the fixed body 131 of one piece of pcb board 11 connection is from one the
One opening is connected in link slot 121.
Wherein when grafting, the pressure of terminal 13, which can be conducted to by crossbeam 12, to be supported, so that phase between terminal 13 and pcb board 11
Interreaction force is small, by stable support so that pin needle 132 itself is not easily damaged, the connection of pin needle 132 and pcb board 11
It is not easily damaged.
Referring to figure 4., wherein Fig. 4 is the partial enlargement structural representation at the B in Fig. 3.
Wherein, except convex the second opening to link slot 121 of fixed body 131, the one end of pin needle 132 far from pcb board 11
Positioned at the protrusion of fixed body 131 on the side except link slot 121, so that the part that extends of pin needle 132 is fully located at connection
, will not be by the interference of crossbeam 12 when pin needle 132 is connect with wiring board to be measured except slot 121, and pin needle 132 in the present embodiment
The distance for protruding from the top planes of crossbeam 12 is 0.9mm, such as distance value C in Fig. 4.
In addition, be additionally provided with locating slot 122 on crossbeam 12, locating slot 122 and the first opening are located at the same side, pcb board 11,
Insulation protection piece 15 and pressing plate 14 limit in locating slot 122, and convenient for assembly, and connection structure is reliable and stable.
Referring to figure 3., wherein Fig. 3 be the utility model circuit board tester switch card main view.
Pin 16 passes through 14, two pieces of pcb boards 11 of two pressure plates and crossbeam 12 is fixedly connected, and there are also multiple in Fig. 3
Pin 16, does not indicate one by one, and the position that can refer to link slot 121 in terminal 13 and Fig. 6 in Fig. 1 judges pin 16.
Fig. 1 is please referred to, wherein Fig. 7 is the test circuit of the pcb board of the circuit board tester switch card of the utility model
Schematic diagram.
Test circuit in Fig. 7 specifically includes that switch matrix modules A, constant current source module B, voltage test module C.In Fig. 7
Middle SW1-H, SW1-L, SW2-H, SW2-L are 4 electronic switches in switch matrix module；RS1, RS2 are changeover section (as held
Son) equivalent resistance, RL is the equivalent resistance of test line plate, and I is the current value of constant current source module when being tested, Vi be into
The voltage value that voltage test module obtains when row test, the quality of test line plate is judged according to this voltage value.
Assuming that the equivalent resistance of a network is RL on test line plate, the resistance of changeover section is RS1, RS2 on machine,
Open electronic switch SW1-H, SW2-L, setting electric current I, (flow direction has been indicated in figure), then test voltage Vi=(RS1+
RS2+RL) * I, the Vi measured is compared with the standard value set before to sentence the quality of PCB route
It is disconnected.
On the other hand, it is understood that by above-mentioned formula, the value of RS1+RS2 is that finish the latter in production of machinery opposite
Stable empirical value works as increase so the equivalent resistance RL of test line plate and the test electric current of setting just determine the value of Vi
When electric current I (such as will being originally that 10mA increases to 20mA), measured resistance RL changes lesser value (such as 1 ohm), the Vi measured
The changing value of corresponding standard value will increase accordingly one times, and then preferably be compared with standard value；
When such as original electric current I is 10mA, measured resistance RL changes 1 ohm, and Vi changes 10v compared with standard value；
When electric current I is 20mA, measured resistance RL changes 1 ohm, and Vi can then change 20v compared with standard value.
The test circuit can effectively improve test by continuity test electric current and short-circuit test voltage, the increase of electric current
The measurement accuracy of machine, substantially increases that high-density plate is crack, the reading of micro- short testing efficiency and the specific resistance value of bad plate,
Reliable basis is provided for the maintenance of plate factory and subsequent be made, the circuit board tester switch card of the utility model not only solves existing
There is the problem of increasing in technology because of contact resistance caused by multiple switching, has also correspondinglyd increase the stability of itself connection in reliable
Property.
Working principle of the utility model is: pcb board 11 desirable first and multiple terminals 13, multiple terminals 13 are sequentially connected
, can be in such a way that scolding tin connect to pcb board 11, the connection via hole that the pin needle 132 on terminal 13 is connected on pcb board
It is interior；
Then the two packaged pcb boards 11 for having terminal 13 are taken, it is packed into from the second opening of 121 two sides of link slot respectively,
So that all fixed bodies 131 are located by connecting in link slot 121, and the fixed body 131 on two pieces of pcb boards 11 can be close to connect
Touching, so that structure is more firm；
Subsequently, insulation protection piece 15 and pressing plate 14 is taken successively to install to locating slot 122, last write off follows closely 16 for pressing plate
14, insulation protection piece 15, terminal 13, pcb board 11 and crossbeam are firm is connected as one.
The assembling process of the circuit board tester switch card of this preferred embodiment is completed in this way.
The circuit board tester switch card of this preferred embodiment is by connecting multiple terminals in pcb board one end, so that when end
When damage problem occurs in the somewhere of son, only the terminal can be changed, with strong points, save the cost, and will be more by pressing plate
A terminal, pcb board and crossbeam are firm to be connected as one, and stable structure is reliable, long service life.
Although above preferred embodiment is not used in conclusion the utility model is disclosed above with preferred embodiment
To limit the utility model, those skilled in the art can make without departing from the spirit and scope of the utility model
It is various to change and retouch, therefore the protection scope of the utility model subjects to the scope of the claims.
Claims (10)
1. a kind of circuit board tester switch card characterized by comprising
Pcb board has the test circuit for measurement circuit plate, is provided on the pcb board electrical with the test circuit
The connection via hole of connection；
Terminal is connected to the side of described pcb board one end, including fixed body and through more be connected on the fixed body
Pin needle, one end of the pin needle are electrically connected in the connection via hole, and multiple ends are connected on the pcb board
Son；
Crossbeam is connected to the side of the pcb board；
Pressing plate is connected to the other side of the pcb board, for being formed jointly to the pcb board and the terminal with the crossbeam
Clamping pressing.
2. circuit board tester switch card according to claim 1, which is characterized in that be provided on the pcb board more
A connection via hole, multiple connection via holes are arranged in matrix, the pin needle on multiple terminals arrange in matrix and
It is consistent with multiple connection via holes.
3. circuit board tester switch card according to claim 2, which is characterized in that the center of the adjacent pin needle
Away from for 1mm or 0.898mm.
4. circuit board tester switch card according to claim 1, which is characterized in that the pin needle and the fixed body
Structure is molded as one by way of injection molding.
5. circuit board tester switch card according to claim 4, which is characterized in that the pin needle is L-shape, described to draw
The both ends of foot needle are extended respectively on two adjacent sides of the fixed body, and the one side of pin needle is extended on the fixed body
It is fitted on the side of the pcb board, and one end of the pin needle extends in the connection via hole, the extension side of the other end
To the extended planar for being parallel to the pcb board.
6. circuit board tester switch card according to claim 1, which is characterized in that the two sides of a crossbeam connect
It is connected to one piece of pcb board, link slot is provided on the crossbeam, the link slot penetrates through the crossbeam, the link slot packet
The first opposite opening, and the second opening between two first openings are included, what one piece of pcb board connected consolidates
Determine body to be connected in the link slot from first opening.
7. circuit board tester switch card according to claim 6, which is characterized in that the fixed body connection
Except second opening of slot, the pin needle is located at fixed body protrusion in the link slot far from one end of the pcb board
Except side on.
8. circuit board tester switch card according to claim 6, which is characterized in that be additionally provided with positioning on the crossbeam
Slot, the locating slot and first opening are located at the same side, and the pcb board and the pressing plate are limited in the locating slot
It is interior.
9. circuit board tester switch card according to claim 8, which is characterized in that pin pass through two pieces of pressing plates,
Two pieces of pcb boards and the crossbeam are fixedly connected.
10. circuit board tester switch card according to claim 1, which is characterized in that in the pressing plate and the pcb board
Between be additionally provided with insulation protection piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821973988.XU CN209215437U (en) | 2018-11-27 | 2018-11-27 | Circuit board tester switch card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821973988.XU CN209215437U (en) | 2018-11-27 | 2018-11-27 | Circuit board tester switch card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209215437U true CN209215437U (en) | 2019-08-06 |
Family
ID=67461707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821973988.XU Active CN209215437U (en) | 2018-11-27 | 2018-11-27 | Circuit board tester switch card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209215437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062892A (en) * | 2021-10-20 | 2022-02-18 | 深圳市凯码时代科技有限公司 | Circuit board testing machine |
-
2018
- 2018-11-27 CN CN201821973988.XU patent/CN209215437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062892A (en) * | 2021-10-20 | 2022-02-18 | 深圳市凯码时代科技有限公司 | Circuit board testing machine |
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