CN205910222U - Improved Needle Seat Structure of Inspection Fixture - Google Patents

Abstract

The utility model discloses a needle seat structure of improved detection tool, which comprises a base, a substrate and a plurality of test probes, wherein the surface of the base is provided with a plurality of first through holes and a plurality of first positioning holes, the surface of the substrate stacked above the base is provided with a plurality of second through holes staggered with the first through holes, and a plurality of second positioning holes aligned with the first positioning holes, when a plurality of test probes are to be arranged between the base and the substrate, the first through holes are aligned with the second through holes, then the test probes are inserted into the space between the first through holes and the second through holes, after the insertion is completed, the first positioning holes are aligned with the second positioning holes and a fixing component is inserted into the second through holes, so as to fix the test probes, meanwhile, the test probes can be extruded by the inner wall surfaces of the first through holes and the second through holes, thereby forming an inclined part, so that the test probes are limited between the base and the substrate, thereby avoiding the separation or falling off, and reducing the number of used components and the manufacturing cost due to the mutual superposition of the base material and the base.

Description

Improved Needle Seat Structure of Inspection Fixture

technical field

The utility model relates to an improved needle seat structure of a detection fixture, in particular base materials are stacked above the base of the needle seat, and multiple first perforations on the surface of the base are staggered to multiple second perforations on the surface of the base material In this way, the test probes inserted between the first through hole and the second through hole form an inclined portion, so that a plurality of test probes can be limited between the base and the base material, so as not to fall.

Background technique

At present, the wiring pattern (pattern) composed of multiple wirings on the circuit board must transmit correct electronic signals to electronic components such as ICs, semiconductors, and resistors mounted on the circuit board. Circuit wiring boards such as printed circuit boards, flexible (flexiBle) substrates, multilayer wiring boards, liquid crystal panels (LCD panels) or plasma display panels (plasma display panels) that form wiring patterns, or semiconductor chips, etc. The wiring pattern formed on the substrate is used as the detection object to detect the resistance value between a plurality of detection points set on the wiring pattern to determine whether its electrical characteristics are good or not.

As shown in Figure 9 and Figure 10, the existing three-dimensional appearance diagram and the side view sectional view of the probe can be clearly seen from the figure. At present, in order to detect whether the wiring pattern on the circuit board is completed according to the design, a It is actually applied to the detection fixture of various circuit boards. The detection fixture includes a detection device A, a cable part B and a detection platform C. The detection device A can be used to process the conduction state of the electrical signal, and through the cable part B is electrically connected to the detection platform C, and the needle base C1 for detection is arranged above the detection platform C, and the needle base C1 includes an upper support plate C11, a lower support plate C12, a plurality of support rods C13 and a plurality of probes C14, wherein the The upper support plate C11 and the lower support plate C12 are set up and down at intervals, and the upper support plate C11 and the lower support plate C12 are respectively composed of a plurality of first plates C111 and a plurality of second plates C121, and then supported on the upper The board C11 is provided with a plurality of first through holes C112, and the lower support plate C12 is provided with a plurality of second through holes C122 in a dislocation state with the plurality of first through holes C112, and the plurality of support rods C13 are arranged on the upper support plate Between C11 and the lower support plate C12, for supporting and fixing the upper support plate C11 and the lower support plate C12, the plurality of probes C14 are respectively installed between the upper support plate C11 and the lower support plate C12, and one end is Penetrate into a plurality of first through holes C112, and contact multiple detection points of the wiring pattern on the circuit board with power supply, and the other end penetrates into a plurality of second through holes C122 and is electrically connected to multiple detection points of the cable part B. A wire B1 can be used to detect whether the circuit is disconnected or the circuit is connected between multiple detection points on the wiring pattern of the circuit board through the detection device A.

In addition, since the multiple first through holes C112 pierced by the upper support plate C11 of the needle seat C1 are designed according to the multiple detection points on the wiring pattern, and the multiple first through holes C112 are connected with the multiple second through holes. C122 is in a dislocation state, which can prevent multiple probes C14 from detaching from the upper support plate C11 and the lower support plate C12 by means of dislocation, so when the two ends of multiple probes C14 are inserted into the first through hole When C112 and multiple second through holes C122 are inside, the multiple probes C14 will be inclined, and because the multiple probes C14 are inclined and inserted according to the design of multiple detection points on the wiring pattern, resulting in There is no uniformity, and a plurality of probes C14 must be manually inserted between the upper support plate C11 and the lower support plate C12, which not only requires a lot of manpower, but also takes a lot of time. The insertion operation is carried out, so that the manufacturing cost remains high.

In addition, the multiple probes C14 of the needle base C1 have conductive wires C141, and the outer surface of the wires C141 is usually coated with an insulating layer C142 to prevent electrical contact between adjacent multiple probes C14, thereby causing In the case of a short circuit, however, since a plurality of probes C14 need to be coated with an insulating layer C142 on the outer surface, so that the processing operation is complicated, thereby increasing the overall processing cost, and if the insulating layer C142 is not coated properly, Evenly, the probe C14 will not be electrically connected to the detection point or the wire B1 of the cable part B, or a short circuit will occur between a plurality of adjacent probes C14, resulting in reduced reliability in use.

Therefore, how to try to solve the above problems is the direction that those skilled in the art want to study and improve.

Utility model content

The main purpose of the present utility model is that the surface of the base is provided with a plurality of first through holes and a plurality of first positioning holes, the substrate is stacked above the base, and the surface of the substrate is provided with a plurality of first positioning holes. The perforations form a plurality of second perforations in a misaligned state, and a plurality of second positioning holes in an aligned state with a plurality of first positioning holes. When it is intended to arrange a plurality of test probes between the base and the substrate, Align the multiple first through-holes with the multiple second through-holes first, then insert multiple test probes between the multiple first through-holes and the multiple second through-holes, and after the insertion is completed, make the multiple test probes The first positioning hole and multiple second positioning holes form an alignment state, and a fixing component is inserted inside, so that the base and the substrate are in a stable position, and at the same time, the test probe will be affected by the first through hole and the second The extrusion of the inner wall surface of the perforation forms an inclined part, and the test probe can be limited between the base and the substrate through the inclined part, so as to prevent the situation of detachment and falling from between the base and the substrate, and Since the base material is stacked on the base, multiple supporting rods used in the prior art can be omitted, so as to reduce manufacturing and cost, and achieve the purpose of improving the overall competitiveness.

The secondary purpose of this utility model is that when a plurality of test probes are to be installed between the base of the needle base and the base material, the plurality of first perforations and the plurality of second perforations are aligned, so that the plurality of test probes The needles can be inserted and inserted through automated mechanical equipment, which can not only reduce labor costs, but also make the insertion and insertion operations faster and more accurate, thereby improving manufacturing efficiency and having a higher product qualification rate. Purpose.

Another purpose of the utility model is that the base material of the needle holder is stacked above the base, so when a plurality of test probes are inserted between the base and the base material, the base and the base material can be used to prevent the Electrical contacts are generated between adjacent multiple test probes to avoid short circuits, and the outer surfaces of the multiple test probes do not need to be coated with an insulating layer, which can reduce the difficulty of processing operations, thereby achieving The purpose of reducing manufacturing costs.

In order to achieve the above purpose, the utility model provides an improved needle seat structure of a detection fixture, the needle seat includes a base, a base material and a plurality of test probes, wherein:

The surface of the base is provided with a plurality of first through holes, and the surface of the base is provided with a plurality of first positioning holes around the plurality of first through holes;

The substrate is stacked above the base, and the surface of the substrate is provided with a plurality of second through-holes that are misaligned with the plurality of first through-holes after assembly and correspond to the positions of a plurality of test points of a predetermined circuit board. , and on the surface of the substrate and around the plurality of second through holes, a plurality of second positioning holes aligned with the plurality of first positioning holes are provided for passing the preset fixing component and fixing the base and the substrate hole; and

The plurality of test probes are made of conductive material and arranged between the base and the substrate, and one side of the test probes is provided with a first end inserted into the first through hole, and the other side is provided with an insert The second end portion is inserted into the second through hole and forms electrical contact with the test point of the predetermined circuit board, and an inclined portion is formed between the first end portion and the second end portion.

In an embodiment of the present invention, the base and the base material are long and rectangular.

In an embodiment of the present invention, the inner wall surfaces of the plurality of first positioning holes of the base are provided with threads.

In order to achieve the above purpose, the utility model also provides another improved needle base structure of the detection jig, including the detection jig and the needle base, wherein:

The detection jig has a detection device for processing the conduction state of electrical signals between a plurality of test points of a predetermined circuit board, and a cable part with a plurality of wires is electrically connected to one side of the detection device, and the cable The other side of the part is connected to a detection platform, and a plurality of through holes for a plurality of wires to respectively pass through are formed on the detection platform; and

The needle seat includes a base, a base material and a plurality of test probes, wherein the base is positioned above the detection platform, and a plurality of first through holes are formed on the surface of the base at the plurality of through holes located on the detection platform , and a plurality of first positioning holes are provided on the surface of the base around the plurality of first through holes, and a base material is stacked above the base, and a plurality of assembled and multiple positioning holes are provided on the surface of the base material. The first through-holes form a dislocation state and correspond to a plurality of second through-holes at a plurality of test point positions of the preset circuit board, and then on the surface of the substrate and located around the plurality of second through-holes, there are aligned multiple second through-holes. The first positioning hole is a plurality of second positioning holes for the predetermined fixing component to pass through and fix the base and the substrate, the plurality of test probes are made of conductive material and arranged between the base and the substrate , and one side of the test probe is provided with a first end that is inserted into the first through hole and forms electrical contact with a plurality of wires of the cable part, and the other side is provided with a first end that is inserted into the second through hole and is in contact with the preset The test point of the circuit board forms the second end portion of electrical contact, and a slope portion is formed between the first end portion and the second end portion.

In one embodiment of the present utility model, the bottom surface of the base of the needle base is provided with a plurality of limit holes, and the surface of the detection platform of the detection jig is provided with positions corresponding to the plurality of limit holes for positioning in a plurality of limit holes. Multiple positioning bumps in bit holes.

In an embodiment of the present invention, the base and the base material of the needle holder are in the shape of a long rectangle.

In an embodiment of the present invention, the inner wall surfaces of the plurality of first positioning holes of the base are provided with threads.

Description of drawings

Fig. 1 is the three-dimensional exterior view of the utility model;

Fig. 2 is a three-dimensional exploded view of the utility model;

Fig. 3 is a three-dimensional exploded view of another perspective of the utility model;

Figure 4 is a side view sectional view (1) when the utility model is assembled;

Fig. 5 is a side view sectional view (two) when the utility model is assembled;

Figure 6 is a side view sectional view (three) when the utility model is assembled;

Fig. 7 is a three-dimensional appearance view of the needle seat installed in front of the detection platform of the detection fixture in the present invention;

Fig. 8 is a three-dimensional appearance view of the needle seat installed on the detection platform of the detection fixture in the present invention;

Fig. 9 is a perspective view of an existing probe;

Fig. 10 is a side sectional view of a conventional probe.

Explanation of reference signs: 1-needle seat; 11-base; 111-first through hole; 112-first positioning hole; 1121-thread; 113-limiting hole; 12-base material; 121-second through hole; 122 - second positioning hole; 13 - test probe; 131 - first end; 132 - second end; 133 - inclined part; 14 - fixed component; 141 - fixed pin; Tool; 21-detection platform; 211-positioning bump; 212-through hole; 22-cable part; 221-wire; 23-detection device; A-detection device; B-cable part; B1-wire; C- Detection platform; C1-needle seat; C11-upper support plate; C111-first plate; C112-first perforation; C12-lower support plate; C121-second plate; C122-second perforation; C13-support rod; C14 -probe; C141-wire; C142-insulation.

detailed description

In order to achieve the above-mentioned purpose and effect, the technical means and the structure thereof adopted by the utility model are hereby drawn to illustrate in detail its features and functions as follows with regard to the preferred embodiment of this creation.

Shown in Fig. 1, Fig. 2, Fig. 3 are three-dimensional appearance diagram, three-dimensional exploded view and the three-dimensional exploded view of another angle of view of the present utility model respectively, it can be clearly seen from the figure that the needle holder in the present utility model 1 includes a base 11, a substrate 12 and a plurality of test probes 13, wherein:

A plurality of first through holes 111 are formed on the surface of the base 11 , and a plurality of first positioning holes 112 are formed around the first through holes 111 , and a plurality of limiting holes 113 are formed on the bottom of the base 11 .

The surface of the base material 12 is provided with a plurality of second through-holes 121 which form a dislocation state with the plurality of first through-holes 111 and correspond to a plurality of test point positions of an external circuit board (not shown in the figure). A plurality of second positioning holes 122 aligned with the plurality of first positioning holes 112 is formed on the surface of the material 12 and around the plurality of second through holes 121 .

The test probe 13 is made of conductive material, and has a first end 131 and a second end 132 on both sides respectively.

The above-mentioned base 11 and base material 12 are each composed of one plate in a preferred embodiment, but in actual application, they can also be composed of two, three or more than three plates. All structures that can achieve the aforementioned effects should be covered by the present invention, and such simple modifications and equivalent structural changes should be included in the scope of protection of the present invention in the same way.

In addition, the base 11 and base material 12 of the above-mentioned needle hub 1 are preferably implemented in a rectangular shape, but in practical applications, they can also be triangular, circular or various types of polygonal plates. This part is about the base 11 and base material. The shape of the material 12 is many, and its appearance can be changed according to the actual application or demand, and the composition of the shape is not the main point of the creation of this case, and only a brief description is made here for understanding.

Shown in Fig. 4, Fig. 5, Fig. 6 are respectively the side view sectional view (one), (two) and (three) when the utility model is assembled, can clearly find out from the figure, the utility model when assembling, Firstly, the base material 12 is stacked on the base 11, and the plurality of second through holes 121 of the base material 12 are respectively aligned with the plurality of first through holes 111 of the base 11. At this time, the plurality of holes of the base 11 The first positioning hole 112 and the plurality of second positioning holes 122 of the substrate 12 are in a misaligned state, so that a plurality of test probes 13 can be arranged between the base 11 and the substrate 12 (as shown in FIG. 4 ), so that the test The first end portion 131 and the second end portion 132 of the probe 13 are respectively inserted into the plurality of first through holes 111 and the plurality of second through holes 121, and then the base 11 and the base material 12 can be relatively pushed inward respectively, so as to If the multiple first through holes 111 are misplaced to the multiple second through holes 121, and the multiple test probes 13 pierced inside are pushed by the inner walls of the multiple first through holes 111 and the multiple second through holes 121, it will cause Bending deformation occurs between the first end portion 131 and the second end portion 132, thereby forming an inclined portion 133 (as shown in FIG. 5 ). At the same time, a plurality of first positioning holes 112 and a plurality of second positioning holes 122 are aligned state, then the fixing component 14 can be installed inside the first positioning hole 112 and the second positioning hole 122 in the aligned state, so that the base 11 and the base material 12 are in a firmly combined state (as shown in FIG. 6 ), The assembly of the utility model can be completed.

The first positioning hole 112 of the base 11 and the second positioning hole 122 of the substrate 12 can be inserted into the fixing component 14, and the fixing component 14 is preferably implemented as a fixing pin 141 for positioning in the first positioning hole 112. In the second positioning hole 122, the base 11 and the base material 12 are combined and fixed, but in actual application, the inner wall surface of the first positioning hole 112 can be provided with threads 1121, and the fixing component 14 can be a screw 142, that is, Pass the fixing component 14 through the second positioning hole 122 to be locked in the first positioning hole 112 with the thread 1121 to form a position. There are many ways to assemble and combine the base 11 and the base material 12 in this part, and it can be determined according to the actual situation. The application or demand of the application or demand to change the implementation, and the composition of the details is not the main point of the creation of this case, here is only a brief description for understanding.

As shown in Fig. 7 and Fig. 8, the three-dimensional appearance diagram of the needle holder installed in the detection platform of the detection fixture in the present invention and the three-dimensional appearance diagram of the needle holder installed in the detection platform of the detection fixture are shown in Fig. It can be clearly seen from the figure that when the needle holder 1 is actually used, it is first installed on the detection platform 21 of the detection fixture 2, and the multiple positioning bumps 211 on the surface of the detection platform 21 are buckled into the base of the needle holder 1 respectively. 11 bottom surface in a plurality of limit holes 113, and a plurality of through-holes 212 corresponding to the plurality of first through-holes 111 of the base 11 on the detection platform 21 are penetratingly provided with a plurality of through-holes 212, and then a plurality of through-holes 212 are respectively inserted with The first ends 131 of the plurality of test probes 13 form a plurality of wires 221 that electrically contact the cable portion 22, and the other ends of the plurality of wires 221 are electrically connected to a detection device that can be used to process the conduction state of electrical signals. 23. After the needle base 1 is positioned on the detection platform 21 of the detection fixture 2, the external circuit board to be detected can be placed on the substrate 12, and the second ends 132 of the plurality of test probes 13 will be The multiple test points of the wiring patterns on the external circuit board are electrically contacted. When testing is desired, the detection device 23 of the detection fixture 2 will transmit the detection signal to the multiple wires 221 of the cable part 22. , and then sent to a plurality of measurement points on the external circuit board through a plurality of test probes 13, and receive detection signals from the plurality of measurement points, and then calculate the resistance between the plurality of measurement points according to the received signals Value, which is used to judge whether there is continuity between multiple measurement points.

The detection device 23 of the above-mentioned detection fixture 2 can be used to process the conduction state of the electrical signal between multiple measurement points on the external circuit board. This part is related to how to process the conduction state of the electrical signal. The composition is not the key point of the creation of this case, so I won't repeat it for understanding.

The substrate 12 is stacked above the base 11 of the needle hub 1, and a plurality of test probes 13 are interposed between the plurality of first through holes 111 of the base 11 and the plurality of second through holes 121 of the substrate 12. After the base 11 and the base material 12 form a misaligned state, the plurality of test probes 13 will form an inclined portion 133, so as to be firmly limited between the base 11 and the base material 12, so that they will not be separated or dropped during use. Falling out of the base 11 and base material 12 to achieve a good positioning effect, compared with the prior art, the needle holder 1 can omit multiple support rods, and the number of layers of the base 11 and base material 12 is better In the embodiment, each can be made of a piece of plate material, which can reduce the overall thickness of the base 11 and the base material 12 , thereby achieving the purpose of reducing material and manufacturing costs, and enhancing the overall competitiveness.

In addition, when a plurality of test probes 13 are to be installed between the base 11 and the substrate 12 of the needle holder 1, the plurality of second through-holes 121 of the base 12 are aligned with the plurality of first through-holes of the base 11 respectively. 111, and then insert a plurality of test probes 13, because when a plurality of test probes 13 are inserted, the plurality of first through-holes 111 and the plurality of second through-holes 121 are in a state of alignment, so in actual application, it can pass through Automated mechanical equipment is used to perform the operation of inserting multiple test probes 13, which can reduce the cost of manpower, and the use of automated mechanical equipment can also make the insertion operation faster and more accurate, so as to achieve faster manufacturing efficiency. It also has the purpose of higher product qualification rate.

However, since the substrate 12 of the needle hub 1 is stacked above the base 11, there is no gap between the base 11 and the substrate 12. When a plurality of test probes 13 are installed on the base 11 and the substrate 12, the base 11 and the base material 12 can be used to prevent electrical contact between adjacent multiple test probes 13, so as to avoid short circuits, and the outer surfaces of the multiple test probes 13 are relatively In the prior art, there is no need to apply an insulating layer, which can reduce the difficulty of processing operations, thereby achieving the effect of reducing manufacturing and material costs.

To sum up, the present utility model is mainly aimed at using the substrate 12 stacked above the base 11 of the needle holder 1, and the plurality of first through holes 111 on the surface of the base 11 are formed with the plurality of second through holes 121 on the surface of the base material 12. dislocation state, so that the test probe 13 inserted between the first through hole 111 and the second through hole 121 forms an inclined portion 133, so that a plurality of test probes 13 can be limited between the base 11 and the base material 12, so as not to The situation of detachment and falling occurs, and the processing and assembly operations can also be simplified, thereby reducing the overall manufacturing and material costs. Therefore, all structures and devices that can achieve the aforementioned effects should be covered by the present invention. This simple modification and Equivalent structural changes should be included in the protection scope of the present utility model in the same way, and should be stated together.

Claims (7)

1. a kind of needle stand structure of improved detection tool, this needle stand includes pedestal, base material and multiple test probe, and its feature exists In:

Multiple first perforation are provided on this base-plates surface, and has provided multiple on base-plates surface at the multiple first perforation surroundings First location hole；

This base material stacking is above pedestal, and forms misaligned state with the multiple first perforation after having provided assembling on the substrate surface And corresponding to multiple second perforation at multiple test point positions of preinstalled circuit plate, on substrate surface and in multiple second Provide at around perforation and be aligned with multiple first location holes so that default fixation kit is passed through and so that pedestal is fixed with base material Multiple second location holes；And

The plurality of test probe is made by conductive material and to be arranged between pedestal and base material, and is provided with test probe side It is inserted into the first end in the first perforation, opposite side is provided with and is inserted in the second perforation and the test point shape with preinstalled circuit plate Become the second end in electrical contact, and between first end and the second end, be formed with rake.

2. the needle stand structure of improved detection tool according to claim 1 is it is characterised in that this pedestal and base material are in length Rectangle.

3. according to claim 1 improved detection tool needle stand structure it is characterised in that this pedestal multiple first Location hole interior sidewall surface is provided with screw thread.

4. a kind of needle stand structure of improved detection tool, include detecting tool and needle stand it is characterised in that:

This detection tool has to process the detection dress of the conducting state of electric signal between multiple test points of preinstalled circuit plate Put, and be electrically connected with the cable portion with multiple wires in detection means side, and cable portion opposite side is connected with detection and puts down Platform, provides the multiple open-works respectively penetrating for multiple wires in detection platform；And

This needle stand includes pedestal, base material and multiple test probe, wherein this base stand location above detection platform, and in pedestal table The multiple through-hole positions being pointed to detection platform on face have provided multiple first perforation, wear positioned at multiple first on base-plates surface Around hole, place has provided multiple first location holes, and above this pedestal, stacking has base material, and has provided assembling on substrate surface Form at misaligned state and the multiple test point positions corresponding to preinstalled circuit plate multiple second afterwards to wear with the multiple first perforation Hole, has provided on substrate surface and at being located at around multiple second perforation and has been aligned with multiple first location holes for default Fixation kit passes through and makes pedestal multiple second location holes fixing with base material, and the plurality of test probe is made by conductive material And be arranged between pedestal and base material, and it is provided with test probe side and is inserted in the first perforation and leads with the multiple of cable portion Line forms first end in electrical contact, and opposite side is provided with and is inserted in the second perforation and is formed with the test point of preinstalled circuit plate The second end in electrical contact, is formed with rake between first end and the second end.

5. the needle stand structure of improved detection tool according to claim 4 is it is characterised in that the base bottom surface of this needle stand It is provided with multiple spacing holes, the detection platform surface of this detection tool corresponds to and is provided with for being positioned multiple limits at multiple spacing holes Multiple positioning convex points of position in the hole.

6. the needle stand structure of improved detection tool according to claim 4 is it is characterised in that the pedestal of this needle stand and base Material is in long rectangle.

7. according to claim 4 improved detection tool needle stand structure it is characterised in that this pedestal multiple first Location hole interior sidewall surface is provided with screw thread.