Circuit inspection device for flexible circuit board

Abstract

The utility model discloses a circuit inspection device for a flexible circuit board, and the device comprises an adapter plate which is used for being connected with a test instrument; the first jig is provided with a first electrode, a first needle planting module and a first switching PIN assembly, one end of the first electrode is connected with the first needle planting module, the other end of the first electrode is connected with the input end of the switching plate, and one end of the first switching PIN assembly is connected with the output end of the switching plate; the second jig is provided with a second electrode, a second needling module and a second switching PIN assembly, and when the first jig is pressed on the second jig, the first needling module and the second needling module are in butt joint with the same line point of the to-be-inspected flexible circuit board from the two sides of the to-be-inspected flexible circuit board respectively; the other end of the first switching PIN assembly is in butt joint with the other end of the second switching PIN assembly. The circuit detection device can effectively detect the circuit problem of a product, and is simple in structure and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board inspection technical field, especially relate to a line inspection device for flexible circuit board. BACKGROUND

[0002] Flexible circuit board, namely FPC, is a kind of highly reliable, excellent flexible printed circuit board with polyimide or polyester film as base material, with the advantages such as high wiring density, light weight, thin thickness, foldable bending, three-dimensional wiring, safety performance and other types of circuit board incomparable advantages.With the development of electric vehicle and intelligent vehicle, the demand of flexible circuit board for vehicle will further increase.

[0003] The scale of domestic flexible circuit board industry is increasing, especially the product market competition in vehicle-mounted field is more and more fierce.In order to ensure that the produced flexible circuit board product meets the use requirement, the line of flexible circuit board is generally checked after being made.The line inspection device for flexible circuit board in prior art has complex structure, uses many layers of plate material, and is difficult to maintain. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of line inspection devices for flexible circuit board, can effectively check out the line problem of product, and simple structure, it is convenient to maintain.

[0005] To solve the above technical problems, an embodiment of the utility model provides a kind of line inspection device for flexible circuit board, comprising:

[0006] Adapter plate, adapter plate is used to be connected with test instrument;

[0007] First fixture, first fixture is equipped with first electrode, first needle-planting module and first adapter PIN assembly, one end of first electrode is connected with first needle-planting module, the other end is connected with the input end of adapter plate, first adapter PIN assembly is set on first fixture and one end of first adapter PIN assembly is connected with the output end of adapter plate;

[0008] The second jig is arranged opposite to the first jig and is used to carry the flexible circuit board to be inspected. The second jig is provided with a second electrode, a second needle implanting module and a second adapter PIN assembly. One end of the second electrode is connected with the second needle implanting module, and the other end is connected with one end of the second adapter PIN assembly. The first adapter PIN assembly corresponds to the second adapter PIN assembly. When the first jig is pressed on the second jig, the first needle implanting module and the second needle implanting module respectively butt against the same circuit point of the flexible circuit board to be inspected from two sides of the flexible circuit board to be inspected. The other end of the first adapter PIN assembly and the other end of the second adapter PIN assembly butt against each other.

[0009] Further, the first needle implanting module and the second needle implanting module each include a plurality of needle implanting units. Each needle implanting unit includes a first probe fixing plate, a second probe fixing plate and a plurality of probes arranged between the first probe fixing plate and the second probe fixing plate. The first probe fixing plate and the second probe fixing plate are connected by a fastener. A plurality of through holes corresponding one-to-one are arranged on the first probe fixing plate and the second probe fixing plate respectively. The probes are arranged in the through holes and have two ends respectively extending out of the first probe fixing plate and the second probe fixing plate.

[0010] Further, the probe includes a sleeve, an elastic element arranged in the sleeve and two spring needles. One end of the spring needle is connected with one end of the elastic element, and the other end extends out of the sleeve.

[0011] Further, the first electrode includes a first upper bottom plate and a first lower bottom plate, and the second electrode includes a second upper bottom plate and a second lower bottom plate. A plurality of support columns are arranged between the first upper bottom plate and the first lower bottom plate and between the second upper bottom plate and the second lower bottom plate. The first upper bottom plate and the second upper bottom plate are each provided with a plurality of lead wires extending outward. The plurality of lead wires are used to contact and connect with the plurality of probes. The first adapter PIN assembly is arranged on the first upper bottom plate, and the first needle implanting module is arranged on the first upper bottom plate. The second adapter PIN assembly is arranged on the second upper bottom plate, and the second needle implanting module is arranged on the second upper bottom plate.

[0012] Further, the first jig further includes a partition plate connected with the first upper bottom plate and provided with a first needle implanting avoiding groove for avoiding the first needle implanting module and a first adapter PIN avoiding groove for avoiding the first adapter PIN assembly.

[0013] The second jig further includes a material supporting plate connected with the second upper bottom plate and provided with a second needle implanting avoiding groove for avoiding the second needle implanting module and a second adapter PIN avoiding groove for avoiding the second adapter PIN assembly.

[0014] Further, the first upper bottom plate and the second upper bottom plate are rectangular plates, and the distance between the outer periphery of the first needle-planting avoiding slot and the edge of the first upper bottom plate and the distance between the outer periphery of the second needle-planting avoiding slot and the edge of the second upper bottom plate are both greater than or equal to 10 mm.

[0015] Further, the second jig is provided with positioning columns extending towards the first jig, and the first upper bottom plate is provided with positioning holes matched with the positioning columns.

[0016] Further, the positioning columns and the positioning holes are respectively six in number and are respectively located at the middle and four corners of the side length of the first upper bottom plate and the second upper bottom plate.

[0017] Further, the second upper bottom plate is further provided with a limiting piece for limiting the flexible circuit board to be inspected.

[0018] Further, the utility model further comprises a driving mechanism connected with the first jig or the second jig and used for driving the first jig or the second jig to reciprocate in the vertical direction.

[0019] The utility model has the advantages of:

[0020] The first electrode, the first needle-planting module and the first adapter PIN assembly are arranged on the first jig, the second electrode, the second needle-planting module and the second adapter PIN assembly are arranged on the second jig, one end of the first electrode is connected with the input end of the adapter plate, the other end is connected with the first needle-planting module, one end of the first adapter PIN assembly is connected with the output end of the adapter plate, one end of the second electrode is connected with the second needle-planting module, the other end is connected with one end of the second adapter PIN assembly, when the first jig and the second jig are pressed together, the first needle-planting module and the second needle-planting module are connected with the same circuit point of the flexible circuit board to be inspected, and one end of the first adapter PIN assembly is connected with one end of the second adapter PIN assembly, thereby forming a test loop through the first electrode, the first needle-planting module, the second needle-planting module, the second electrode, the second adapter PIN assembly, the first adapter PIN assembly and the adapter plate, and the tester judges whether the circuit of the flexible circuit board to be inspected is normal by detecting the resistance value of the test loop. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort. In the drawings, the parts are not necessarily drawn according to the actual proportion.

[0022] Figure 1 An exploded view of the line inspection device for the flexible circuit board is shown.

[0023] Figure 2 A structural schematic view of the first needle implanting module is shown.

[0024] Figure 3 A structural schematic view of the probe is shown.

[0025] Element reference of the drawings:

[0026] 1, first jig, 11, first electrode, 111, first upper bottom plate, 112, first lower bottom plate, 12, first needle implanting module, 121, first probe fixing plate, 122, second probe fixing plate, 123, probe, 1231, sleeve, 1232, elastic element, 1233, spring needle, 13, first adapter PIN assembly, 14, support column, 15, partition plate, 151, first needle implanting avoiding groove, 152, first adapter PIN avoiding groove, 2, second jig, 21, second electrode, 211, second upper bottom plate, 212, second lower bottom plate, 22, second needle implanting module, 23, second adapter PIN assembly, 24, material supporting plate, 241, second needle implanting avoiding groove, 242, second adapter PIN avoiding groove, 3, adapter plate, 4, positioning column. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0028] Exemplary embodiments of the present application will now be described with reference to the accompanying drawings, however, the present application can be implemented in many different forms and is not limited to the embodiments described herein, these embodiments are provided to thoroughly and completely disclose the present application and fully convey the scope of the present application to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not limited to the present application.

[0029] Unless otherwise stated, the terminology used herein, including technical terms, has the common understanding of those skilled in the art. Additionally, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figure 1 As shown, Figure 1 This is an exploded view of a circuit inspection device for flexible circuit boards according to an embodiment of the present invention. The embodiment of the present invention provides a circuit inspection device for flexible circuit boards, comprising:

[0033] Adapter board 3 is used to connect to the test instrument;

[0034] The first fixture 1 is provided with a first electrode 11, a first needle implantation module 12 and a first adapter PIN assembly 13. One end of the first electrode 11 is connected to the first needle implantation module 12 and the other end is connected to the input end of the adapter plate 3. The first adapter PIN assembly 13 is disposed on the first fixture 1 and one end of the first adapter PIN assembly 13 is connected to the output end of the adapter plate 3.

[0035] The second jig 2 is arranged opposite to the first jig 1 and used for carrying the flexible circuit board to be inspected, and is provided with a second electrode 21, a second needle implanting module 22 and a second adapter PIN assembly 23, one end of the second electrode 21 is connected with the second needle implanting module 22, and the other end is connected with one end of the second adapter PIN assembly 23, wherein the first adapter PIN assembly 13 corresponds to the second adapter PIN assembly 23, when the first jig 1 is pressed on the second jig 2, the first needle implanting module 12 and the second needle implanting module 22 respectively butt joint at the same circuit point of the flexible circuit board to be inspected from two sides of the flexible circuit board to be inspected, and the other end of the first adapter PIN assembly 13 and the other end of the second adapter PIN assembly 23 butt joint.

[0036] In the embodiment, the first electrode 11, the first needle implanting module 12 and the first adapter PIN assembly 13 are arranged on the first jig 1, and the second electrode 21, the second needle implanting module 22 and the second adapter PIN assembly 23 are arranged on the second jig 2, wherein one end of the first electrode 11 is connected with the input end of the adapter board 3, the other end is connected with the first needle implanting module 12, one end of the first adapter PIN assembly 13 is connected with the output end of the adapter board 3, one end of the second electrode 21 is connected with the second needle implanting module 22, and the other end is connected with one end of the second adapter PIN assembly 23, when the first jig 11 and the second jig 22 are pressed on each other, the first needle implanting module 12 and the second needle implanting module 22 are connected with the same circuit point of the flexible circuit board to be inspected, and one end of the first adapter PIN assembly 13 is butt joint connected with one end of the first adapter PIN assembly 13, so that a test loop is formed through the first electrode 11, the first needle implanting module 12, the second needle implanting module 22, the second electrode 21, the second adapter PIN assembly 23, the first adapter PIN assembly 13 and the adapter board 3, and the test instrument judges whether the circuit of the flexible circuit board to be inspected is normal by detecting the resistance value of the test loop. According to the inspection device provided by the utility model, the circuit of the flexible circuit board can be effectively inspected to greatly improve the inspection efficiency, reduce the risk of defective product outflow, and the structure is simple and convenient to maintain.

[0037] One end of the first electrode 11 is connected with the input end of the adapter board 3 through a wire, one end of the first adapter PIN assembly 13 is connected with the output end of the adapter board 3 through a wire, and the signal input end and the signal output end of the adapter board 3 are connected to the test instrument. Thus, the test instrument sends voltage and current to the adapter board 3, and the test loop is formed through the adapter board 3 and each component connected to the rear end of the adapter board 3, and the voltage and the current are returned to the test instrument, so that the wiring and assembly errors can be reduced.

[0038] Further, as shown in Figure 1 and Figure 2As shown, the first needle implanting module 12 and the second needle implanting module 22 each include a plurality of needle implanting units, and each needle implanting unit includes a first probe fixing plate 121, a second probe fixing plate 122, and a plurality of probes 123 arranged between the first probe fixing plate 121 and the second probe fixing plate 122, wherein the first probe fixing plate 121 and the second probe fixing plate 122 are connected by fasteners, and a plurality of through holes corresponding to each other are respectively arranged on the first probe fixing plate 121 and the second probe fixing plate 122, and the probes 123 are arranged in the through holes and the two ends of the probes 123 respectively extend out of the first probe fixing plate 121 and the second probe fixing plate 122. Therefore, the structure of the needle implanting module is simple, the manufacturing cost is low, and the maintenance is convenient.

[0039] Specifically, the first probe fixing plate 121 and the second probe fixing plate 122 are both rectangular plates, and the sizes of the two are the same and arranged opposite to each other, and the two probe fixing plates are fixedly connected together by fasteners. A plurality of through holes corresponding to each other are respectively arranged on the first probe fixing plate 121 and the second probe fixing plate 122, and the probes 123 are arranged in the through holes, and the two ends of the probes 123 respectively extend out of the through holes of the probe fixing plates to contact and connect with the electrodes or the flexible circuit board. When installing, one end of the probe 123 is inserted into the through hole of the first probe fixing plate 121, and the other end is inserted into the through hole of the second probe fixing plate 122, and then six fasteners are locked from the four corners and the middle of the long side of the probe fixing plate.

[0040] Optionally, the inner side of the through hole is provided with a hole wall, the diameters of the two ends of the through hole are smaller than the outer diameter of the probe 123, and the inner diameter of the middle of the through hole is larger than the outer diameter of the probe 123. Therefore, the probe 123 can be prevented from falling off.

[0041] It is worth noting that the number and position of the probes 123 arranged on the first probe fixing plate 121 and the second probe fixing plate 122 can be set according to the test needs of the flexible circuit board, and the present application does not limit this.

[0042] It is also worth noting that, Figure 1 The first needle implanting module 12 only exemplarily illustrates two needle implanting units, but this is not a limitation of the present application, and the number, size and shape of the needle implanting units included in the first needle implanting module 12 and the second needle implanting module 22 can be set according to the test point positions of the flexible circuit board.

[0043] Further, as shown in the drawings, Figure 3 The probe 123 includes a sleeve 1231, an elastic element 1232 arranged in the sleeve 1231, and two spring needles 1233, one end of the spring needle 1233 is connected with one end of the elastic element 1232, and the other end extends out of the sleeve 1231.

[0044] Specifically, the sleeve 1231 is a hollow cylinder, the elastic element 1232 is arranged in the cylinder, one end of each of the two spring needles 1233 is fixedly connected with two ends of the elastic element 1232 and located in the cylinder, and the other end of each of the two spring needles 1233 extends from the two sides of the sleeve 1231, one of the two spring needles 1233 is used for contact connection with the flexible circuit board, and the other is used for contact connection with the electrode, so as to realize conduction of electric current.

[0045] The probe with the structure has the advantages of simple structure, low manufacturing cost, good conductivity, and the like, and is not affected by slight deformation of a jig plate, is not easy to be damaged, and has good durability, thereby greatly reducing maintenance frequency and improving production efficiency.

[0046] Further, as shown in Figure 1 the first electrode 11 includes the first upper bottom plate 111 and the first lower bottom plate 112, the second electrode 21 includes the second upper bottom plate 211 and the second lower bottom plate 212, a plurality of support columns 14 are arranged between the first upper bottom plate 111 and the first lower bottom plate 112 and between the second upper bottom plate 211 and the second lower bottom plate 212, the first upper bottom plate 111 and the second upper bottom plate 211 are each provided with a plurality of lead wires extending outward, the plurality of lead wires are used for contact connection with the plurality of probes 123, the first adapter PIN assembly 13 is arranged on the first upper bottom plate 111, and the first needle implanting module 12 is arranged on the first upper bottom plate 111; the second adapter PIN assembly 23 is arranged on the second upper bottom plate 211, and the second needle implanting module 22 is arranged on the second upper bottom plate 211.

[0047] Specifically, the first electrode 11 includes the first upper bottom plate 111 and the first lower bottom plate 112, and a plurality of support columns 14 are arranged between the first upper bottom plate 111 and the first lower bottom plate 112. By using a screw, one end of the support column 14 is fixedly connected with the first upper bottom plate 111, and the other end is fixedly connected with the first lower bottom plate 112, so as to lock the first upper bottom plate 111 and the first lower bottom plate 112. The first upper bottom plate 111 is provided with a plurality of lead wires extending outward, which are used for contact connection with the probe 123 to realize electrical conduction between the first electrode 11 and the first needle implanting module 12.

[0048] By slotting one edge side of the first upper bottom plate 111, the first adapter PIN assembly 13 is arranged in the slot of the first upper bottom plate 111, so as to arrange the first adapter PIN assembly 13 on the first upper bottom plate 111. One probe fixing plate in each needle implanting unit of the first needle implanting module 12 is fixed on the outer side of the first upper bottom plate 111 by a screw or the like.

[0049] The second electrode 21 comprises a second upper bottom plate 211 and a second lower bottom plate 212, and a plurality of support columns 14 are arranged between the two. One end of the support column 14 is fixedly connected with the second upper bottom plate 211 and the other end is fixedly connected with the second lower bottom plate 212 by using a screw, so as to lock the second upper bottom plate 211 and the second lower bottom plate 212. The second upper bottom plate 211 is provided with a plurality of lead wires leading outwards, which are used to contact and connect with the probes 123 to realize the electrical conduction between the second electrode 21 and the second pin implanting module 22.

[0050] The second adapter PIN assembly 23 is arranged in the slot of the second upper bottom plate 211, so as to be arranged on the second upper bottom plate 211. One probe fixing plate in each pin implanting unit of the second pin implanting module 22 is fixed on the outer side of the second upper bottom plate 211 by a screw or the like.

[0051] Optionally, the first upper bottom plate 111, the first lower bottom plate 112, the second upper bottom plate 211 and the second lower bottom plate 212 are all made of bakelite, so as to greatly reduce the manufacturing cost on the premise of ensuring the electrical conductivity.

[0052] Further, as shown in Figure 1 The first jig 1 further comprises a partition plate 15, which is connected with the first upper bottom plate 111 and is provided with a first pin implanting avoiding slot 151 for avoiding the first pin implanting module 12 and a first adapter PIN avoiding slot 152 for avoiding the first adapter PIN assembly 13.

[0053] The second jig 2 further comprises a material supporting plate 24, which is connected with the second upper bottom plate 211 and is provided with a second pin implanting avoiding slot 241 for avoiding the second pin implanting module 22 and a second adapter PIN avoiding slot 242 for avoiding the second adapter PIN assembly 23.

[0054] Specifically, the partition plate 15 is arranged on the first upper bottom plate 111 and is fixedly connected with the first upper bottom plate 111 by a screw. The partition plate 15 is provided with the first pin implanting avoiding slot 151 and the first adapter PIN avoiding slot 152 at positions where the first pin implanting module 12 and the first adapter PIN assembly 13 are arranged, so as to avoid the first pin implanting module 12 and the first adapter PIN assembly 13. The probes 123 of the first pin implanting module 12 and the contact ends of the first adapter PIN assembly 13 all extend outwards from the avoiding slots of the partition plate 15, so that the probes can contact one side of the flexible circuit board to be inspected and the first adapter PIN assembly 13 can be docked with the second adapter PIN assembly 23.

[0055] A material supporting plate 24 is arranged on the second upper bottom plate 211 and is fixedly connected with the second upper bottom plate 211 by screws. Second needle implanting avoiding grooves 241 and second adapter PIN avoiding grooves 242 are arranged on the positions where the second needle implanting module 22 and the second adapter PIN assembly 23 are arranged respectively, so as to avoid the second needle implanting module 22 and the second adapter PIN assembly 23. The probes 123 of the second needle implanting module 22 and the contact ends of the second adapter PIN assembly 23 all extend outward from the avoiding grooves of the material supporting plate 24, so that the probes can contact the other side of the flexible circuit board to be inspected, and the second adapter PIN assembly 23 can be connected with the first adapter PIN assembly 13. In use, the flexible circuit board to be inspected is placed on the material supporting plate 24.

[0056] Further, the first upper bottom plate 111 and the second upper bottom plate 211 are both rectangular plates, the distance between the outer periphery of the first needle implanting avoiding groove 151 and the edge of the first upper bottom plate 111 and the distance between the outer periphery of the second needle implanting avoiding groove 241 and the edge of the second upper bottom plate 211 are both more than 10 mm. In this way, the outer periphery of the avoiding groove is away from the edge by at least 10 mm, which can ensure the service life of the jig, otherwise, the risk of breaking the plate may occur if it is too close to the edge.

[0057] Further, as shown in Figure 1 The second jig 2 is provided with positioning columns 4 which extend towards the first jig 1, and the first upper bottom plate 111 is provided with positioning holes which match the positioning columns 4. In this way, the positioning columns 4 and the positioning holes are arranged one by one, so as to ensure the clamping precision of the first jig 1 and the second jig 2.

[0058] Specifically, the positioning columns 4 are arranged on the second upper bottom plate 211 of the second jig 2, the material supporting plate 24 is provided with positioning pin holes which match the positioning columns 4, and the first upper bottom plate 111 and the partition plate 15 are both provided with positioning holes at positions which match the positioning columns 4. When the first jig 1 is clamped on the first jig 1 to clamp, the positioning columns 4 are inserted through the positioning holes on the partition plate 15 and the positioning holes on the first upper bottom plate 111 in sequence, so as to position the first jig 1 and the second jig 2, thereby successfully clamping the two jigs.

[0059] It is worth mentioning that, in order to ensure the clamping precision of the first jig 1 and the second jig 2, the number of the positioning columns 4 and the positioning holes can be arranged according to the size of the jig.

[0060] Optionally, in the embodiment, the positioning columns 4 and the positioning holes are both six, and are respectively arranged at the middle and four corners of the side length of the first upper bottom plate 111 and the second upper bottom plate 211.

[0061] Further, the second upper bottom plate 211 is further provided with limiting members for limiting the flexible circuit board to be inspected.

[0062] The flexible circuit board to be inspected is positioned by the limiting member. Optionally, in the embodiment, the limiting member is a plurality of limiting columns arranged on the second upper bottom plate 211 and provided with through holes on the material supporting plate 24 for the limiting columns to pass through.

[0063] Further, a driving mechanism is further included, which is connected with the first jig 1 or the second jig 2 and used for driving the first jig 1 or the second jig 2 to reciprocate in a vertical direction, for example, the x direction shown in the figure, which is the direction in which the first jig 11 and the second jig 22 are closed and separated. Figure 1

[0064] Optionally, the driving mechanism is an electric push rod or a pneumatic cylinder to realize automatic control. The driving mechanism can be connected with the first jig 1 or the second jig 2, which is selected according to actual needs. The first jig 1 or the second jig 2 is driven by the driving mechanism to reciprocate in the vertical direction, so that the first jig 1 and the second jig 2 are pressed together for detection or separated for taking and placing the flexible circuit board.

[0065] Working principle: the flexible circuit board to be inspected is placed on the material supporting plate 24, the second jig 2 is moved upward, the first jig 1 and the second jig 2 are pressed together, the first jig 1 and the second jig 22 are closed, the lower end of the first needle implanting module 12 is connected with the flexible circuit board from above, the upper end of the second needle implanting module 22 is connected with the flexible circuit board from below, and the first adapter PIN assembly 13 and the second adapter PIN assembly 23 are connected with each other, so that the first electrode 11, the first needle implanting module 12, the second needle implanting module 22, the second adapter PIN assembly 23, the first adapter PIN assembly 13 and the adapter board 3 form a test loop. The testing instrument is connected with the adapter board 3, the testing instrument supplies voltage and current to the adapter board 3, the resistance of the test loop is measured, and the testing instrument judges whether the circuit of the flexible circuit board is normal according to the resistance.

[0066] The line inspection device for the flexible circuit board can effectively inspect the line problem of the flexible circuit board, greatly improves the inspection efficiency, reduces the product failure rate, and has simple structure and is convenient to maintain.

[0067] The above embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.​

Claims

1. An apparatus for inspecting a circuit of a flexible circuit board, characterized by, The utility model relates to a test fixture for flexible circuit board, which comprises: a conversion board for connecting with a testing instrument; a first fixture provided with a first electrode, a first needle implanting module and a first conversion PIN assembly, one end of the first electrode is connected with the first needle implanting module, the other end is connected with an input end of the conversion board, the first conversion PIN assembly is arranged on the first fixture and one end of the first conversion PIN assembly is connected with an output end of the conversion board; a second fixture arranged oppositely to the first fixture for carrying a flexible circuit board to be checked, the second fixture is provided with a second electrode, a second needle implanting module and a second conversion PIN assembly, one end of the second electrode is connected with the second needle implanting module, the other end is connected with one end of the second conversion PIN assembly, wherein the first conversion PIN assembly corresponds to the second conversion PIN assembly, when the first fixture is pressed and combined on the second fixture, the first needle implanting module and the second needle implanting module respectively butt joint at the same circuit point of the flexible circuit board to be checked from two sides of the flexible circuit board to be checked, the other end of the first conversion PIN assembly and the other end of the second conversion PIN assembly butt joint oppositely.

2. The line inspection device of claim 1, wherein, The first needle implanting module and the second needle implanting module each comprise a plurality of needle implanting units, the needle implanting unit comprises a first probe fixing plate, a second probe fixing plate and a plurality of probes arranged between the first probe fixing plate and the second probe fixing plate, the first probe fixing plate and the second probe fixing plate are connected through fasteners, a plurality of through holes corresponding one by one are respectively arranged on the first probe fixing plate and the second probe fixing plate, the probes are arranged in the through holes and two ends of the probes respectively extend out of the first probe fixing plate and the second probe fixing plate.

3. The line inspection device of claim 2, wherein, The probe comprises a sleeve, an elastic element arranged in the sleeve and two spring needles, one end of the spring needle is connected with one end of the elastic element, the other end of the spring needle extends out of the sleeve.

4. The line inspection apparatus of claim 2, wherein The first electrode comprises a first upper bottom plate and a first lower bottom plate, the second electrode comprises a second upper bottom plate and a second lower bottom plate, a plurality of supporting columns are arranged between the first upper bottom plate and the first lower bottom plate and between the second upper bottom plate and the second lower bottom plate, the first upper bottom plate and the second upper bottom plate are each provided with a plurality of lead wires leading outwards, the plurality of lead wires are used for contact connection with a plurality of probes, the first conversion PIN assembly is arranged on the first upper bottom plate, the first needle implanting module is arranged on the first upper bottom plate, the second conversion PIN assembly is arranged on the second upper bottom plate, and the second needle implanting module is arranged on the second upper bottom plate.

5. The line inspection device of claim 4, wherein, The first fixture further comprises a partition plate connected with the first upper bottom plate and provided with a first needle implanting avoiding groove for avoiding the first needle implanting module and a first conversion PIN avoiding groove for avoiding the first conversion PIN assembly. The second jig further comprises a material supporting plate connected with the second upper bottom plate and provided with a second needle implanting avoiding slot for avoiding the second needle implanting module and a second adapter PIN avoiding slot for avoiding the second adapter PIN assembly.

6. The line inspection device of claim 5, wherein, The first upper bottom plate and the second upper bottom plate are both rectangular plates, and the distance between the outer periphery of the first needle implanting avoiding slot and the edge of the first upper bottom plate and the distance between the outer periphery of the second needle implanting avoiding slot and the edge of the second upper bottom plate are both greater than or equal to 10 mm.

7. The line inspection apparatus of claim 4, wherein The second jig is provided with a positioning column extending towards the first jig, and the first upper bottom plate is provided with a positioning hole matched with the positioning column.

8. The line inspection device of claim 7, wherein, The positioning column and the positioning hole are both provided with six, respectively located at the middle and four corners of the side length of the first upper bottom plate and the second upper bottom plate.

9. The line inspection apparatus of claim 4, wherein, The second upper bottom plate is further provided with a limiting piece for limiting the flexible circuit board to be inspected.

10. The line inspection apparatus of claim 1, wherein, Further comprising a driving mechanism connected with the first jig / or the second jig for driving the first jig or the second jig to reciprocate in the vertical direction.

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