CN110687324B - Dual-purpose detachable test needle structure - Google Patents

Abstract

The invention provides a dual-purpose detachable test needle structure for carrying out electrical detection on an object to be detected. One end of the body is provided with at least one first rotary clamping part, and the body is hollow and is used for accommodating the probe; the detection joint is hollow, one end of the detection joint is provided with at least one second rotary clamping part corresponding to the first rotary clamping part so that the body and the detection joint can be mutually clamped and assembled or disassembled in a rotary mode, the other end of the detection joint is provided with an electric contact part and a through hole, the through hole is used for a probe to penetrate out, and the electric contact part is in contact with an object to be detected to form conduction, so that the replacement speed can be effectively improved, and the detection joint has enough rigidity and collimation after being assembled and is favorable for the test structure to press down to detect the electric state of the object to be detected.

Description

Dual-purpose detachable test pin structure

technical field

The invention relates to an electrical testing structure, in particular to a dual-purpose detachable testing needle structure that can be quickly disassembled and assembled, and facilitates the replacement of corresponding testing probes according to testing requirements, thereby improving testing speed and efficiency.

Background technique

In order to know whether the electrical properties of various electronic products meet the requirements after they are manufactured, supplies such as electrical testing needles can generally be used as testing tools. A single electrical detection needle itself has a detection function, but the actual electronic products have to detect a large number of electrical contacts, so it is often necessary to install a large number of electrical detection needles on the detection machine to increase the overall detection speed.

Generally speaking, the electrical detection needle refers to the device installed on the machine for electrical conduction with the electronic product to be tested. It is installed on the machine in a unique way, and can test the electrical parameters such as the current state of the product to be tested. The machines for testing electronic products are mostly divided into many loading areas according to different electrical testing requirements. A large number of electrical testing needles are installed in each loading area, and electronic products can be moved to each loading area one by one for testing. Corresponding detection.

However, in actual testing applications, based on testing accuracy and safety requirements, electrical testing needles must be replaced after a certain number of uses. Since there are a large number of electrical testing connectors installed in each loading area of the machine, there are few Dozens or tens of thousands are limited by the integrated structure of the electrical testing connector. Therefore, when disassembling and replacing, it is necessary to cut off or remove the welding wire, then remove the electrical testing pin, and then replace it with a new electrical testing pin. It is quite inconvenient to perform wire welding and joining operation when testing the needle, and it requires a lot of labor cost and time cost. On the other hand, when each loading area of the inspection machine needs to be replaced with an electrical detection needle of the corresponding specification in response to different products to be tested, it also encounters the dilemma of consuming a lot of cost.

In view of this, the inventors gathered years of experience in related industries and conceived a dual-purpose detachable test needle structure to solve the current deficiencies in electrical testing.

Contents of the invention

An object of the present invention is to provide a dual-purpose detachable test needle structure, which can effectively reduce the time required for the replacement operation, and can quickly replace the required connectors according to the specifications and types of the test objects, greatly improving the applicability.

In order to achieve the above purpose, the present invention discloses a dual-purpose detachable test needle structure for electrical testing of the object to be tested, including: a body, one end of which has at least a first screw-lock portion, and the body is Hollow for accommodating probes; and a detection connector, which is hollow, and one end of the detection connector is provided with at least one second rotation part corresponding to the first rotation part, so that the body and the detection connection can be Rotate to engage with each other to assemble or disassemble. The other end of the detection joint has an electrical contact part and a perforation. The perforation is used for the probe to pass through, and the electrical contact part is used for contacting with the object to be tested to form a conduction. . In this way, the purpose of fast disassembly and assembly can be effectively achieved by using the first rotary clamp part and the second rotary clamp part, and the man-hours required for replacing the joint are greatly reduced, and accordingly the dual-purpose detachable test needle structure can be quickly Match the specifications of various DUTs for testing.

In one embodiment, the first swivel portion is a sliding hole, the second swivel portion is a boss, the first swivel portion has a fastening end and a connecting end, and the width of the fastening end Smaller than the width of the connecting end, when assembling, the second swivel part passes through the first swivel part from the connecting end and moves to the fastening end, even if the body and the detection joint are assembled and fixed, so The detection joint can be quickly and stably assembled or disassembled.

Wherein, when the number of the second swivel parts is N, they are arranged in a ring at equal intervals, and the angle between the adjacent second swivel parts is 360/N, and the first swivel part is The second swivel part should be provided so that force can be applied more firmly during assembly or disassembly, and it can also prevent the phenomenon of axis deviation during the detection process.

In one embodiment, the electrical contact part is a plurality of conductive metal strips, and the plurality of conductive metal strips are arranged in a ring shape along the periphery of the through hole, so that the dual-purpose detachable test needle structure can be achieved through the plurality of conductive metal strips. The shunt function can be applied to the field of large current detection.

In order to effectively improve the detection performance of the dual-purpose detachable test needle structure, in one embodiment, the dual-purpose detachable test needle structure further has a conductive shrapnel, the conductive shrapnel is arranged on the electrical contact part, and the electrical contact The surface of the sexual contact part has a plurality of grooves and a plurality of sharp ribs, the plurality of sharp ribs are arranged in the area where the plurality of grooves are not provided, and the plurality of grooves are radially arranged around the hole; the conductive shrapnel has a plurality of The plurality of guide feet are radially arranged corresponding to the plurality of grooves, so as to be correspondingly located in the plurality of grooves, and when the electrical contact portion is in contact with the object to be tested, the plurality of guide feet can be along the The surface of the object under test slides outward. In this way, the conductive elastic piece and the plurality of sharp ribs can effectively eliminate the oxide layer formed on the surface of the object to be tested, which hinders detection, and improve the accuracy of electrical detection.

Preferably, each of the guide feet has two upper sections and a lower section, and the lower section is connected between the two upper sections and is in a concave arc shape, so that the plurality of guide feet and the under-test When the object is in contact, the arc surface of the lower section slides along the surface of the object to be tested, so as to effectively scrape off the oxide layer by using the arc surface structure.

In order to facilitate holding and rotating the detection joint, in one embodiment, it is disclosed that the outer surface of the detection joint is provided with a plurality of grooves, which is convenient for holding and applying force.

Preferably, the detection connector itself can also have an outer shell and an inner base, the outer shell is sleeved on the outside of the inner base and has a plurality of grooves, and the inner base has the second screw part and The electrical contact part can reduce the replacement cost when the object is damaged.

In addition, in order to quickly confirm the assembly state, the detection connector has a pair of alignment gaps, and the body has a pair of alignment holes. When the detection connector is assembled to the body, the alignment gap corresponds to the alignment hole, and It can be inserted and fixed by a positioning piece.

Wherein, preferably, the body corresponds to the end assembled with the detection joint, and after being rotated and assembled with the detection joint, it extends to the inside of the detection joint, so as to enhance the assembly strength of the body and the detection joint.

To sum up, the dual-purpose detachable test needle structure of the present invention utilizes a detachable structure to effectively increase the replacement operation rate, and can quickly replace the corresponding test needle according to various specifications of the test object. The connector is connected to the main body, so that the scope of application of the dual-purpose detachable test needle structure can be improved. Moreover, through the structural design of the electrical contact part, the dual-purpose detachable test needle structure can be reliably applied to high-current detection. Furthermore, for the oxide layer that is easy to form on the surface of the object to be tested, it can also be used through The electrical contact portion and the conductive spring structure prevent the influence of the oxide layer during testing, and further enhance the accuracy of electrical testing.

Description of drawings

FIG. 1 is an exploded schematic view (1) of the structure of a dual-purpose detachable test needle according to the first embodiment of the present invention.

FIG. 2 is an exploded schematic diagram (2) of the structure of the dual-purpose detachable test needle according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of the assembly of the dual-purpose detachable test needle structure according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram of assembly of probes in the structure of the dual-purpose detachable test needle according to the first embodiment of the present invention.

FIG. 5 is a schematic diagram of the assembly of the dual-purpose detachable test needle structure according to the second embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of a part of the dual-purpose detachable test needle structure detection joint according to the second embodiment of the present invention.

Explanation of reference numerals: 1-dual-purpose detachable test needle structure; 10-body; 101-first swivel part; 1011-fastening end; 1012-connecting end; 102-alignment hole; 11-detection connector; 111-Second spinner part; 112-Electrical contact part; 1121-Groove; 1122-Sharp rib; 113-Hole; 114-Groove; Notch; 12-conductive shrapnel; 121-guide foot; 1211-upper section; 1212-lower section; 2-probe; 3-positioning piece.

Detailed ways

In order to enable a clear understanding of the content of the present invention, the following descriptions are combined with the drawings, please refer to them.

Please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, which are the exploded view (1), the exploded view (2), the assembled view and the structure of the dual-purpose detachable test needle according to the first embodiment of the present invention. Schematic diagram of the needle assembly. The present invention discloses a dual-purpose detachable test pin structure 1 for electrical testing of components under test such as ICs, wafers, batteries, etc., including a body 10 and a testing connector 11 . One end of the main body 10 has at least one first screw-in portion 101 , and the main body 10 is hollow for accommodating a probe 2 . The main body 10 is installed on the testing machine opposite to the end having the first swivel part 101 . Generally, the main body 10 can be fixed on the testing machine by means of nuts and wires welded together. One end of the detection connector 11 is provided with at least one second swivel part 111 corresponding to the first swivel part 101, so that the body 10 and the detection connector 11 can be rotatably engaged or disassembled. The other end of 11 has an electrical contact part 112 and a through hole 113, and the through hole 113 communicates with the hollow area of the body 10 for the probe 2 to pass through, and the electrical contact part 112 is used for contacting with the object to be tested to form a conductive Pass. In this way, through the structure of the first swivel part 101 and the second swivel part 111, the detection joint 11 can be quickly disassembled or assembled with respect to the body 10, which is convenient for regular replacement and maintenance according to the needs, or to be followed. The detection joint 11 of the corresponding specification can be replaced according to the difference of the measured object.

Among them, depending on the detection requirements, if the main body 10 is not placed with the probe 2, it can be applied to electrical detection in the large current range, and the dual-purpose The detachable test pin structure 1 forms an electrical conduction state with the object under test as a whole, and the detection machine connected to the main body 10 can know the electrical state of the object under test accordingly. And when the probe 2 is placed in the hollow area of the main body 10 and the detection probe 11, the sensing detection can be carried out at the same time as the high current detection, so as to know other electrical states of the object under test, for example, when the object under test is a battery , in addition to using the main body 10 and the detection connector 11 to achieve the effect of current state detection, the part that the probe 2 penetrates will also contact the object to be tested, so that the probe 2 can confirm the state of the battery, and then can It has the function of dual-purpose detection, as shown in FIG. 4 . And when the probe 2 is installed on the dual-purpose detachable test needle structure 1, insulators (not shown in the figure) can be placed between the probe 2 and the dual-purpose detachable test needle structure 1 in order to avoid short-circuit phenomenon. Show).

In particular, all kinds of electrical test structures are designed to correspond to the specifications and types of the test object, and each test structure is used to contact the electrical contacts of the test object, so the actual size is quite small. When manufacturing, they are mainly made towards direct one-piece molding. In addition, when the object under test is tested for electrical properties, it is tested through each loading area on the testing machine, and a large number of test structures must be installed in each loading area on the testing machine, and there are at least several test structures in each loading area. More than ten hundreds. Under the premise of the current application state, the one-piece test structure is not only inconvenient to replace, but also does not meet the economic cost considerations. For example, after the test structure is manufactured and used for a rare specific DUT specification, if the test structure of this specification is no longer needed, the test structure will not be reused, resulting in a lot of cost waste. However, the dual-purpose detachable test needle structure 1 of the present invention can effectively solve these defects and inconveniences. Through the first swivel part 101 and the second swivel part 111, the effect of quick rotation assembly and disassembly can be achieved. When replacing a new detection connector 11 or replacing a corresponding detection connector 11 according to the specifications of the object to be tested, the man-hours for replacing the detection machine can be effectively reduced to less than half, and even if some of the detection connectors 11 are only for rare The development and manufacture of specific specifications can also greatly reduce cost and waste compared with the past. Moreover, through the structure of the first swivel part 101 and the second swivel part 111, the rigidity of the dual-purpose detachable test needle structure 1 can be taken into account, and the detection joint 11 can be assembled and installed on the body 10. Directly detect the object to be tested, reduce the phenomenon of axis deviation, and have unexpected efficacy compared with the prior art. And because of the small size limit of the dual-purpose detachable test needle structure 1, and the particularity of the application field, it is necessary to consider when the detection joint 11 and the body 10 are assembled and tested, and the pressure is not allowed to be collimated. The condition of the offset is that the structure of the rotary assembly and disassembly disclosed here and the overall design motivation are different from the structural design that simply seeks the rotary assembly and disassembly, so it cannot be determined that the present invention utilizes the rotary connection to achieve The technical features of rapid assembly and disassembly are easily conceived from other fields.

Specifically, the first swivel part 101 is a slide hole, the second swivel part 111 is a protrusion, the first swivel part 101 has a fastening end 1011 and a connecting end 1012, and the fastening The width of the end 1011 is smaller than the width of the connecting end 1012. When assembling, the second swivel part 111 passes through the first swivel part 101 from the connecting end 1012 and moves to the fastening end 1011, even if the The body 10 and the detection connector 11 are assembled and fixed to each other. Of course, the first swivel part 101 can also be implemented as a protruding post, and the second swivel part 111 can be implemented as a sliding hole, so that the detection connector 11 can be tightly and firmly assembled with the body 10 . And in order to facilitate the assembly of the first swivel part 101 and the second swivel part 111, the top of the second swivel part 111 can be spherical, and the fastening end 1011 and the connecting end 1012 correspond to the second swivel part. The structure of the top end of the locking part 111 forms a circular state with different diameters, that is, preferably, the diameter of the locking end 1011 is smaller than the diameter of the top end of the second rotating locking part 111, and the top end of the second rotating locking part 111 The diameter of the connecting end 1012 is smaller than that of the connecting end 1012, which is more convenient for assembly and fixing. During assembly, it is only necessary to insert the second locking portion 111 into the connecting end 1012 and move to the locking end 1011 to be fixed. Wherein, the body 10 corresponds to the end assembled with the detection joint 11 , and after being rotated and assembled with the detection joint 11 , extends to the inside of the detection joint 11 to strengthen the connection strength between the two.

Preferably, when the number of the second swivel parts 111 is N, they are arranged in a ring at equal intervals, and the angle between the adjacent second swivel parts 111 is 360/N, the first The swivel portion 101 is corresponding to the second swivel portion 111 . In this way, the second swivel parts 111 and the first swivel parts 101 arranged at equal intervals can make the detection joint 11 and the main body 10 more stable when assembled or disassembled, preventing the insufficient assembly strength from causing the The detection joint 11 is detached from the main body 10, or it is not conducive to rotation and disassembly. In this embodiment, three second swivel portions 111 and three first swivel portions 101 are provided as an example, and the angle between the second swivel portions 111 is 120 degrees.

In addition, in order to facilitate contact with the object to be tested, the electrical contact part 112 is a plurality of conductive metal strips, and the plurality of conductive metal strips are arranged in a ring shape along the periphery of the through hole 113. The test object is closely electrically connected to perform the required electrical test, and each of the conductive metal strips can achieve the function of shunting, so that the dual-purpose detachable test needle structure 1 can be applied to the test in the large current range. Each conductive metal strip can be slightly S-shaped, so that one end protrudes from the detection joint 11 , and the other end is assembled in the detection joint 11 .

On the other hand, in order to facilitate disassembly and replacement of the detection connector 11 , a plurality of grooves 114 may be provided on the outer surface of the detection connector 11 to facilitate gripping and applying force. Through these grooves 114, the frictional force of the tool or hand relative to the detection joint 11 can be improved, and it is easier to hold and rotate to apply force, so that the detection joint 11 is assembled on the body 10 or removed from the body 10 .

In addition, the detection joint 11 can be formed as a whole, or in view of the convenience of replacement, the detection joint 11 can have an outer shell 115 and an inner base 116, and the outer shell 115 is sleeved on the inner base 116 The outer side has a plurality of grooves 114, and the inner base 116 has the second swivel part 111 and the electrical contact part 112, and the outer shell 115 and the electrical contact part 112 can be combined in a tight fit, so if When the detection joint 11 is partially damaged, only the outer casing 115 or the inner base 116 needs to be replaced, which can further reduce the maintenance cost of the components.

Further, the detection connector 11 has a pair of alignment notches 117, and the body 10 has a pair of alignment holes 102. When the detection connector 11 is assembled to the body 10, the alignment notches 117 correspond to the alignment holes 102 , and can be inserted and fixed by a positioning piece 3 . In this way, when the detection joint 11 is fixed on the body 10, the alignment notch 117 and the alignment hole 102 can be used to confirm the completion of assembly, and the positioning member 3 is inserted into the alignment notch 117 and the alignment hole 102. Behind the alignment hole 102 , the positioning member 3 can be locked against the alignment notch 117 to avoid displacement of the detection joint 11 .

Please continue to refer to FIG. 5 and FIG. 6 , which are an assembly diagram of a dual-purpose detachable test needle structure and a partial cross-sectional diagram of a detection joint according to a second embodiment of the present invention. Inheriting the content of the first embodiment, the same detailed technical features will not be repeated here, and the same components are indicated by the same symbols. In this embodiment, there is a conductive elastic piece 12, the conductive elastic piece 12 is arranged on the electrical contact portion 112, and the surface of the electrical contact portion 112 has a plurality of grooves 1121 and a plurality of sharp ribs 1122, the plurality of sharp The protruding ribs 1122 are arranged in the area where the plurality of grooves 1121 are not provided. The plurality of grooves 1121 are radially arranged around the hole 113. The conductive shrapnel 12 has a plurality of guide feet 121, and the plurality of guide feet 121 correspond to the The plurality of grooves 1121 are arranged so as to be correspondingly located in the plurality of grooves 1121 , and when the electrical contact portion 112 is in contact with the object to be tested, the plurality of guide legs 121 can slide outward along the surface of the object to be tested. In other words, the area of the plurality of guide feet 121 that is in contact with the object under test is in a non-planar state, so as to utilize its structure to achieve a sliding deformation action. In order to make the dual-purpose detachable test needle structure 1 have better detection performance, the surface of the electrical contact part 112 is provided with the plurality of sharp ribs 1122 and the conductive elastic sheet 12, which are helpful for piercing and scraping to form The oxide layer on the surface of the object to be tested ensures that the electrical contact portion 112 and the object to be tested are electrically connected. More specifically, when the dual-purpose detachable test needle structure 1 is pressed against the object to be tested, the plurality of sharp ribs 1122 can pierce the oxide layer, and the conductive spring 12 passes through the plurality of guide feet 121 The pressure received when the electrical contact portion 112 is pressed against the surface of the object to be tested is combined with the elasticity of the plurality of guide feet 121 to achieve the movement of sliding outward along the surface of the object to be tested. During the test, the influence of the oxide layer on the surface of the object under test on the electrical conduction is effectively eliminated, and the accuracy of the detection is improved. The plurality of sharp ribs 1122 can be arranged densely and successively, so that the surface of the electrical contact portion 112 forms a rough surface structure, so as to achieve the effect of scraping off the oxide layer. Moreover, the electrical contact part 112 can be a detachable structure relative to the detection joint 11. In other words, the electrical contact part 112 can be a seat body assembled outside the detection joint 11, and the conductive Shrapnel 12. In this way, only the electrical contact portion 112 can be replaced during maintenance or when the electrical contact portion 112 is worn out, thereby reducing the cost of component installation.

Preferably, each of the guide foot portions 121 has two upper sections 1211 and a lower section 1212, and the lower section 1212 is connected between the two upper sections 1211 and is in a concave arc shape, so that the plurality of guides When the foot 121 is in contact with the object to be tested, the arc surface of the lower section 1212 slides along the surface of the object to be tested. As shown in FIG. 6, the upper sections 1211 of each guide foot 121 can be arranged slightly horizontally, while the two ends of the lower section 1212 are respectively connected with the upper section 1211, and present an approximate U-shape. Concave arc, in this way, when the plurality of guide feet 121 are in contact with the object to be tested, the lower section 1212 is the first to contact the object to be tested, and then the lower section 1212 is deformed and slipped under force to achieve scraping and oxidation layer effect. Wherein, the conductive elastic piece 12 can be assembled with the electrical contact portion 112 through objects such as gaskets, so as to strengthen the assembly strength of the conductive elastic piece 12 and avoid deviation. In addition, in order to highlight the features of the conductive elastic piece 12 and the electrical contact portion 112 , only the detection connector 11 is drawn in FIG. 6 , and the probe 2 is not shown.

To sum up, the dual-purpose detachable test needle structure of the present invention utilizes a detachable structure to effectively increase the replacement operation rate, and can quickly replace the corresponding test needle according to various specifications of the test object. The connector is connected to the main body, so that the scope of application of the dual-purpose detachable test needle structure can be improved. Moreover, through the structural design of the electrical contact part, the dual-purpose detachable test needle structure can be reliably applied to high-current detection. Furthermore, for the oxide layer that is easy to form on the surface of the object to be tested, it can also be used through The electrical contact portion and the conductive spring structure prevent the influence of the oxide layer during testing, and further enhance the accuracy of electrical testing.

The above description is only illustrative of the present invention, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims, but All will fall within the protection scope of the present invention.

Claims (4)

1. A dual-purpose detachable testing needle structure for performing electrical detection on an object to be tested is provided, which is characterized by comprising:

a body, one end of which is provided with at least one first rotary clamping part, and the body is hollow and is used for accommodating the probe; and

the detection joint is hollow, at least one second rotary clamping part is arranged at the end face position of one end of the detection joint corresponding to the first rotary clamping part so that the body and the detection joint can be mutually clamped, assembled or disassembled in a rotating mode, the other end of the detection joint is provided with an electric contact part and a through hole, the through hole is used for a probe to penetrate out, and the electric contact part is contacted with an object to be detected to form conduction; the detection joint is provided with a contraposition gap, the body is provided with a contraposition hole, and after the detection joint is assembled to the body, the contraposition gap corresponds to the contraposition hole and can be inserted and fixed through a positioning piece;

the detection joint is provided with an outer shell and an inner base, the outer shell is sleeved outside the inner base and provided with a plurality of grooves, and the inner base is provided with the second rotary clamping part and the electric contact part;

the first rotary clamping part is a sliding hole formed on the end face of the body, the second rotary clamping part is a convex column formed on the end face of the detection joint, the first rotary clamping part is provided with a clamping end and a connecting end, the width of the clamping end is smaller than that of the connecting end, and the second rotary clamping part penetrates through the first rotary clamping part from the connecting end and moves to the clamping end during assembly, so that the body and the detection joint can be mutually assembled and fixed;

the conductive elastic sheet is arranged on the electrical contact part, the surface of the electrical contact part is provided with a plurality of grooves and a plurality of sharp convex ribs, the plurality of sharp convex ribs are distributed in the area without the plurality of grooves, and the plurality of grooves are arranged in a radial shape by taking the through hole as the center; the conductive elastic sheet is provided with a plurality of guide pins which are arranged in a radial shape corresponding to the plurality of grooves so as to be correspondingly positioned in the plurality of grooves, and the plurality of guide pins can slide outwards along the surface of the object to be detected when the electrical contact part is in contact conduction with the object to be detected;

each guide foot part is provided with two upper sections and a lower section, the lower section is connected between the two upper sections and is in a concave arc shape, and therefore when the plurality of guide foot parts are contacted with an object to be measured, the arc surface of the lower section can slide along the surface of the object to be measured.

2. The dual-purpose detachable test pin structure of claim 1, wherein the second rotation locking portions are arranged in an annular shape with equal intervals when the number of the second rotation locking portions is N, the clamping angle of the adjacent second rotation locking portions is 360/N, and the first rotation locking portion is disposed corresponding to the second rotation locking portion.

3. The dual-purpose detachable test pin structure of claim 1 or 2, wherein the outer surface of the test pin is provided with a plurality of grooves to facilitate gripping and applying force.

4. The dual-purpose detachable test pin structure of claim 1 or 2, wherein an end of the body corresponding to the assembling with the test connector extends to the interior of the test connector after being rotatably assembled with the test connector.

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