TWI866615B - Testing fixture - Google Patents

Abstract

A testing fixture is configured to test a board-to-board connector. The board-to-board connector includes a plurality of conductive terminals. Each conductive terminal includes a first elastic arm and a second elastic arm. The testing fixture includes a first detection assembly and a second detection assembly. The first detection assembly includes a first conductive portion configured to be directly or indirectly electrically connected to a corresponding first elastic arm. The second detection assembly includes a second conductive portion configured to be directly or indirectly electrically connected to a corresponding second elastic arm. The first conductive portion, the corresponding first elastic arm, the corresponding second elastic arm and the second conductive portion form a detection circuit, thereby improving the testing convenience and accuracy.

Description

Testing fixture

The invention relates to a testing fixture, belonging to the field of board-to-board connector testing technology.

The board-to-board connector in the related art usually includes an insulating body and a plurality of conductive terminals fixed on the insulating body. As the density of conductive terminals increases, testing the board-to-board connector to ensure that the product is qualified before leaving the factory is a technical problem that needs to be solved by technicians in the relevant technical field.

The purpose of the present invention is to provide a testing fixture capable of testing a board-to-board connector.

To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a detection fixture configured to detect a board-to-board connector, the board-to-board connector comprising an insulating body and a plurality of conductive terminals fixed to the insulating body, the insulating body comprising a first mounting surface and a second mounting surface opposite to the first mounting surface, each conductive terminal comprising a first elastic arm protruding from the first mounting surface and a second elastic arm protruding from the second mounting surface, the detection fixture comprising: a first detection assembly, the first detection assembly being configured to press against the first elastic arm to cause the first elastic arm to undergo elastic deformation; the first detection assembly comprising a first test fixture, the first test fixture comprising a first conductive portion, the first conductive portion being configured to be directly or indirectly electrically connected to the corresponding first elastic arm; and The second detection assembly is configured to press against the second elastic arm to cause the second elastic arm to deform elastically; the second detection assembly includes a second test fixture, the second test fixture includes a second conductive portion, and the second conductive portion is configured to be directly or indirectly electrically connected to the corresponding second elastic arm; wherein the first conductive portion, the corresponding first elastic arm, the corresponding second elastic arm, and the second conductive portion form a detection circuit.

As a further improved technical solution of the present invention, the first detection assembly is configured to press the first elastic arm with a first downward pressure to cause the first elastic arm to undergo elastic deformation; the second detection assembly is configured to press the second elastic arm with a second downward pressure to cause the second elastic arm to undergo elastic deformation.

As a further improved technical solution of the present invention, the first detection assembly is provided with a first downward pressure surface facing the first mounting surface; when the first detection assembly presses against the first elastic arm with the first downward pressure, a first gap is formed between the first downward pressure surface and the first mounting surface; the second detection assembly is provided with a second downward pressure surface facing the second mounting surface; when the second detection assembly presses against the second elastic arm with the second downward pressure, a second gap is formed between the second downward pressure surface and the second mounting surface.

As a further improved technical solution of the present invention, the first test fixture includes a first surface and a second surface opposite to the first surface; the first conductive portion includes a plurality of first conductive posts at least partially located between the first surface and the second surface along the thickness direction of the first test fixture, and a first connecting piece connecting two adjacent first conductive posts; an end of the first conductive post away from the first surface is directly electrically connected to the corresponding first elastic arm.

As a further improved technical solution of the present invention, the second test fixture includes a third surface and a fourth surface opposite to the third surface; the second conductive portion includes a plurality of second conductive posts at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture, and a second connecting piece connecting two adjacent second conductive posts; an end of the second conductive post away from the fourth surface is directly electrically connected to the corresponding second elastic arm.

As a further improved technical solution of the present invention, one of the aforementioned plurality of first conductive posts is configured as a signal input end, and two adjacent aforementioned first conductive posts and a first connecting piece form a first U-shaped connection path; one of the aforementioned plurality of second conductive posts is configured as a signal output end, and two adjacent aforementioned second conductive posts and a second connecting piece form a second U-shaped connection path.

As a further improved technical solution of the present invention, the first test fixture is a first circuit board, and the first connecting piece is exposed on the first surface; the second test fixture is a second circuit board, and the second connecting piece is exposed on the fourth surface.

As a further improved technical solution of the present invention, the first detection assembly includes a first adapter module, the first adapter module includes a plurality of first adapter terminals, each of the first adapter terminals includes a first fixed portion and a first movable portion mounted on the first fixed portion and capable of moving relative to the first fixed portion; the first fixed portion is directly electrically connected to the corresponding first elastic arm; the first test fixture includes a first surface and a second surface opposite to the first surface; the first conductive portion includes a plurality of first conductive posts at least partially located between the first surface and the second surface along the thickness direction of the first test fixture, and a first connecting piece connecting two adjacent first conductive posts; an end of the first conductive post away from the first surface abuts against the corresponding first movable portion.

As a further improved technical solution of the present invention, the second detection assembly includes a second adapter module, the second adapter module includes a plurality of second adapter terminals, each of the second adapter terminals includes a second fixed portion and a second movable portion mounted on the second fixed portion and capable of moving relative to the second fixed portion; the second fixed portion is directly electrically connected to the corresponding second elastic arm; the second test fixture includes a third surface and a fourth surface opposite to the third surface; the second conductive portion includes a plurality of second conductive posts at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture, and a second connecting piece connecting two adjacent second conductive posts; an end of the second conductive post away from the fourth surface abuts against the corresponding second movable portion.

As a further improved technical solution of the present invention, one of the aforementioned plurality of first conductive posts is configured as a signal input end, and two adjacent aforementioned first conductive posts and a first connecting piece form a first U-shaped connection path; one of the aforementioned plurality of second conductive posts is configured as a signal output end, and two adjacent aforementioned second conductive posts and a second connecting piece form a second U-shaped connection path; the aforementioned first test fixture is a first circuit board, and the aforementioned first connecting piece is exposed on the aforementioned first surface; the aforementioned second test fixture is a second circuit board, and the aforementioned second connecting piece is exposed on the aforementioned fourth surface.

As a further improved technical solution of the present invention, some of the plurality of conductive terminals are arranged along a first direction, and the other are arranged along a second direction, and the first direction and the second direction are perpendicular to each other; the first conductive portion includes a plurality of first switch portions arranged at intervals along the first direction, each of the first switch portions includes a first strip portion extending along the second direction, and the first strip portion contacts at least the first elastic arms of two of the conductive terminals; the second conductive portion includes a plurality of second switch portions arranged at intervals along the second direction, each of the second switch portions includes a second strip portion extending along the first direction, and the second strip portion contacts at least the second elastic arms of two of the conductive terminals; wherein the detection circuit can be formed by connecting two of the first strip portions or connecting two of the second strip portions.

As a further improved technical solution of the present invention, the first test fixture includes a first surface and a second surface opposite to the first surface, the first switch portion is close to the second surface; the first conductive portion further includes a first test post connected to the first strip portion and exposed at least to the first surface; the first test post is at least partially located between the first surface and the second surface along the thickness direction of the first test fixture; the second test fixture includes a third surface and a fourth surface opposite to the third surface, the second switch portion is close to the third surface; the second conductive portion further includes a second test post connected to the second strip portion and exposed at least to the fourth surface; the second test post is at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture.

As a further improved technical solution of the present invention, some of the plurality of conductive terminals are arranged along a first direction, and the other are arranged along a second direction, wherein the first direction and the second direction are perpendicular to each other; the first conductive portion includes a plurality of first switch test posts corresponding to the first elastic arms one by one and in contact with the first elastic arms; the second conductive portion includes a body portion, and the body portion is in contact with the second elastic arms of at least part of the plurality of conductive terminals distributed along the first direction and along the second direction; wherein the detection circuit can be formed by connecting two of the first switch test posts.

As a further improved technical solution of the present invention, the first test fixture includes a first surface and a second surface opposite to the first surface, the first switch test post is at least partially located between the first surface and the second surface along the thickness direction of the first test fixture, and the first switch test post is at least exposed to the first surface; the second test fixture includes a third surface and a fourth surface opposite to the third surface, the body is close to the third surface; the second conductive part further includes a second test post connected to the body and exposed to at least the fourth surface; the second test post is at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture.

As a further improved technical solution of the present invention, the aforementioned detection fixture includes a first clamping block and a second clamping block clamped at the two ends of the aforementioned insulating body; the aforementioned first detection assembly is provided with a first positioning groove; the aforementioned second detection assembly is provided with a second positioning groove; the aforementioned first clamping block and the aforementioned second clamping block are both positioned in the aforementioned first positioning groove and the aforementioned second positioning groove.

Compared with the prior art, the detection fixture of the present invention includes a first detection assembly and a second detection assembly, wherein the first detection assembly is configured to press against the first elastic arm to cause the first elastic arm to deform elastically; the second detection assembly is configured to press against the second elastic arm to cause the second elastic arm to deform elastically, so as to control the downward pressure of the conductive terminal. In addition, the first conductive part, the corresponding first elastic arm, the corresponding second elastic arm and the second conductive part form a detection circuit for detecting the conductive terminal in the detection circuit, thereby improving the convenience and accuracy of the detection.

The following will be described in detail with reference to the drawings for exemplary embodiments of the present invention. If there are multiple embodiments, the features of these embodiments can be combined with each other without conflict. When the description involves drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products and/or methods described in the scope of the patent application of the present invention and consistent with some aspects of the present invention.

The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention. The singular forms "a", "above", or "the" used in the specification and patent application of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

It should be understood that the words used in the specification and patent application of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, "one" or "an" and similar words do not indicate quantitative limitations, but indicate the existence of at least one. Unless otherwise specified, the words "front", "back", "upper", "lower" and similar words appearing in the present invention are only for the convenience of explanation, and are not limited to a specific position or a spatial orientation. "Include" or "comprising" and similar words are an open-ended expression, meaning that the elements appearing before "include" or "comprising" cover the elements and their equivalents appearing after "include" or "comprising", which does not exclude that the elements appearing before "include" or "comprising" may also include other elements. If "plurality" appears in the present invention, its meaning refers to two and more than two.

Please refer to Figures 1 to 11, a first embodiment of the present invention discloses a testing fixture, which is configured to test a board-to-board connector 100. The board-to-board connector 100 includes an insulating body 1 and a plurality of conductive terminals 2 fixed to the insulating body 1. The insulating body 1 includes a first mounting surface 11 (e.g., an upper surface) and a second mounting surface 12 (e.g., a lower surface) opposite to the first mounting surface 11. Please refer to Figures 8 and 9, each conductive terminal 2 includes a fixing portion 20 fixed in the insulating body 1, a first elastic arm 21 extending from one end of the fixing portion 20 and protruding upward from the first mounting surface 11, and a second elastic arm 22 extending from the other end of the fixing portion 20 and protruding downward from the second mounting surface 12. In the embodiment of the present invention, the conductive terminal 2 is substantially in the shape of a square frame, wherein the free end of the first elastic arm 21 and the free end of the second elastic arm 22 are close to each other. A person skilled in the art can understand that the first elastic arm 21 and the second elastic arm 22 are used to abut against the first gold finger (not shown) on the first mounting circuit board and the second gold finger (not shown) on the second mounting circuit board, respectively.

Please refer to FIG. 2 , in the embodiment of the present invention, the plurality of conductive terminals 2 are arranged in a matrix, wherein a portion of the conductive terminals 2 are arranged along a first direction D1-D1 (e.g., left-right direction), and another portion of the conductive terminals 2 are arranged along a second direction D2-D2 (e.g., front-back direction), and the first direction D1-D1 and the second direction D2-D2 are perpendicular to each other.

Please refer to Figures 2 to 7, the aforementioned detection fixture includes a first detection component 30 and a second detection component 40. The aforementioned first detection component 30 is configured to press against the aforementioned first elastic arm 21, so that the aforementioned first elastic arm 21 undergoes elastic deformation. The aforementioned first detection component 30 includes a first test fixture 31, a first fixing seat 32, a first pressing plate 33 for pressing the aforementioned first test fixture 31 against the aforementioned first fixing seat 32, and a first fastener 34 for fixing the aforementioned first pressing plate 33 to the aforementioned first fixing seat 32. The aforementioned first test fixture 31 includes a first conductive portion 35, and the aforementioned first conductive portion 35 is configured to be directly or indirectly electrically connected to the corresponding first elastic arm 21.

In the first embodiment of the present invention, the first fixing seat 32 is provided with a first middle hollow groove 321 and a first positioning groove 322 connected to the first middle hollow groove 321. In the first embodiment of the present invention, there are two first positioning grooves 322 and they are respectively located at two ends of the first fixing seat 32 along the first direction D1-D1.

There are two first pressing sheets 33, which press two sides of the first test fixture 31 respectively.

In the first embodiment of the present invention, the first test fixture 31 is a first circuit board, which includes a first surface 311 (eg, an upper surface) and a second surface 312 (eg, a lower surface) opposite to the first surface 311 .

The first conductive portion 35 includes a plurality of first conductive posts 351 at least partially located between the first surface 311 and the second surface 312 along the thickness direction of the first test fixture 31, and a first connecting piece 352 connecting two adjacent first conductive posts 351. One end (e.g., the bottom end) of the first conductive post 351 away from the first surface 311 is directly electrically connected (e.g., directly in contact) with the corresponding first elastic arm 21. A person skilled in the art will understand that the first conductive post 351 and the first connecting piece 352 can be realized in combination with the process technology of the circuit board.

Please refer to FIG. 10 and FIG. 11 . In the first embodiment of the present invention, one of the plurality of first conductive posts 351 is configured as a signal input terminal Input, and two adjacent first conductive posts 351 and a first connecting piece 352 form a first U-shaped connecting path 353. A person skilled in the art will understand that the first conductive portion 35 includes a first conductive post 351 as a signal input terminal Input and a plurality of first U-shaped connecting paths 353 arranged at intervals. The two first conductive posts 351 of each first U-shaped connecting path 353 are electrically connected to the first elastic arms 21 of the two adjacent conductive terminals 2, respectively. In the first embodiment of the present invention, the first connecting piece 352 is exposed to the first surface 311.

Similarly, the second detection assembly 40 is configured to press against the second elastic arm 22 to cause elastic deformation of the second elastic arm 22. The second detection assembly 40 includes a second test fixture 41, a second fixing seat 42, a second pressing plate 43 for pressing the second test fixture 41 against the second fixing seat 42, and a second fastener 44 for fixing the second pressing plate 43 to the second fixing seat 42. The second test fixture 41 includes a second conductive portion 45, and the second conductive portion 45 is configured to be directly or indirectly electrically connected to the corresponding second elastic arm 22.

In the first embodiment of the present invention, the second fixing seat 42 is provided with a second middle hollow groove 421 and a second positioning groove 422 connected to the second middle hollow groove 421. In the first embodiment of the present invention, there are two second positioning grooves 422 and they are respectively located at two ends of the second fixing seat 42 along the first direction D1-D1.

There are two second pressing sheets 43, which press two sides of the second test fixture 41 respectively.

In the first embodiment of the present invention, the second test fixture 41 is a second circuit board, which includes a third surface 411 (eg, an upper surface) and a fourth surface 412 (eg, a lower surface) opposite to the third surface 411 .

The second conductive portion 45 includes a plurality of second conductive posts 451 at least partially located between the third surface 411 and the fourth surface 412 along the thickness direction of the second test fixture 41, and a second connecting piece 452 connecting two adjacent second conductive posts 451. One end (e.g., the top end) of the second conductive post 451 away from the fourth surface 412 is directly electrically connected (e.g., directly in contact) with the corresponding second elastic arm 22. A person skilled in the art will understand that the second conductive post 451 and the second connecting piece 452 can be realized in combination with the process technology of the circuit board.

Please refer to FIG. 10 and FIG. 11 . In the first embodiment of the present invention, one of the plurality of second conductive posts 451 is configured as a signal output terminal Output, and two adjacent second conductive posts 451 and a second connecting piece 452 form a second U-shaped connecting path 453. A person skilled in the art will understand that the second conductive portion 45 includes a second conductive post 451 as a signal output terminal Output and a plurality of second U-shaped connecting paths 453 arranged at intervals. The two second conductive posts 451 of each second U-shaped connecting path 453 are electrically connected to the second elastic arms 22 of the two adjacent conductive terminals 2, respectively. In the first embodiment of the present invention, the second connecting piece 452 is exposed to the fourth surface 412.

In order to better control the amount of downward pressure and achieve the flatness of the crimping, the aforementioned testing fixture includes a first clamping block 13 and a second clamping block 14 clamped at both ends of the aforementioned insulating body 1. The aforementioned first clamping block 13 and the aforementioned second clamping block 14 can be used to accurately control the reference surface of the aforementioned board-to-board connector 100. In the embodiment of the diagram of the present invention, the aforementioned first clamping block 13 and the aforementioned second clamping block 14 are two respectively. The aforementioned first clamping block 13 and the aforementioned second clamping block 14 are positioned in the first positioning groove 322 of the aforementioned first fixing seat 32 and the second positioning groove 422 of the aforementioned second fixing seat 42.

The first conductive part 35, the corresponding first elastic arm 21, the corresponding second elastic arm 22 and the second conductive part 45 form a detection circuit (please refer to the detection circuit indicated by the bold arrow in FIG. 11 ). By inputting an electrical signal at the input end of the detection circuit and detecting the electrical signal at the output end, it can be determined whether the conductive terminal 2 in the detection circuit meets the design requirements. For example, when the first detection component 30 and the second detection component 40 are respectively installed with the set downward pressure amount and abut against the first elastic arm 21 and the second elastic arm 22, if an electrical signal is input at the input end of the detection circuit but no electrical signal is detected at the output end, it can be determined that at least one of the conductive terminals 2 in the detection circuit fails to make contact with the first conductive part 35 and/or the second conductive part 45, and thus the detection circuit is a defective product.

Please refer to Figure 31. In the first embodiment of the present invention, when the first detection assembly 30 and the second detection assembly 40 are not pressed against the conductive terminal 2 of the board-to-board connector 100, the height between the first abutting surface of the first elastic arm 21 of the conductive terminal 2 and the first mounting surface 11 is H1, and the height between the second abutting surface of the second elastic arm 22 of the conductive terminal 2 and the second mounting surface 12 is H2.

During detection, the first detection assembly 30 is configured to press the first elastic arm 21 with a first downward pressure to cause the first elastic arm 21 to be elastically deformed; the second detection assembly 40 is configured to press the second elastic arm 22 with a second downward pressure to cause the second elastic arm 22 to be elastically deformed. At this time, the height between the first contact surface of the first elastic arm 21 of the conductive terminal 2 and the first mounting surface 11 is H1', and the height between the second contact surface of the second elastic arm 22 of the conductive terminal 2 and the second mounting surface 12 is H2'. A person skilled in the art can understand that the first downward pressure is H1-H1', and the second downward pressure is H2-H2'. In addition, the first pressing amount and the second pressing amount are both within a set interval (i.e., a numerical range), that is, the detection can be performed when the first pressing amount and the second pressing amount reach the set interval. The purpose of setting the interval is not only to avoid the first detection assembly 30 and the second detection assembly 40 from having insufficient contact with the first elastic arm 21 and the second elastic arm 22, but also to avoid the first detection assembly 30 and the second detection assembly 40 from having excessive contact with the first elastic arm 21 and the second elastic arm 22, thereby improperly damaging the conductive terminal 2. Those skilled in the art will understand that once the conductive terminal 2 is damaged during the testing process, such as the first elastic arm 21 and/or the second elastic arm 22 are permanently deformed, the board-to-board connector 100 is still a defective product even if the test is passed.

Please refer to Figure 11. In the first embodiment of the present invention, the first detection component 30 is provided with a first downward pressure surface facing the first mounting surface 11; when the first detection component 30 presses against the first elastic arm 21 with the first downward pressure, a first gap G1 is provided between the first downward pressure surface and the first mounting surface 11; the second detection component 40 is provided with a second downward pressure surface facing the second mounting surface 12; when the second detection component 40 presses against the second elastic arm 22 with the second downward pressure, a second gap G2 is provided between the second downward pressure surface and the second mounting surface 12.

Please refer to Figures 12 to 18. In the second embodiment of the present invention, in order to improve the problem that the surface coplanarity control of the first conductive column 351 in contact with the first elastic arm 21 in the first test fixture 31 is difficult to control, and in order to improve the problem that the surface coplanarity control of the second conductive column 451 in contact with the second elastic arm 22 in the second test fixture 41 is difficult to control, the first detection assembly 30 further includes a first adapter module 36, and the second detection assembly 40 further includes a second adapter module 46.

The first adapter module 36 includes a first adapter shell 361 and a plurality of first adapter terminals 362 mounted on the first adapter shell 361. In the embodiment of the present invention, the first adapter terminal 362 is a Pogo terminal. Each of the first adapter terminals 362 includes a first fixed portion 3621 and a first movable portion 3622 mounted on the first fixed portion 3621 and capable of moving relative to the first fixed portion 3621. The first movable portion 3622 can move up and down relative to the first fixed portion 3621 under the action of a first spring (not shown). The bottom surface of the first fixed portion 3621 is directly electrically connected to (e.g., directly in contact with) the corresponding first elastic arm 21. The first movable portion 3622 is directly electrically connected to (e.g., directly in contact with) the bottom surface of the first conductive column 351.

Similarly, the second adapter module 46 includes a second adapter housing 461 and a plurality of second adapter terminals 462 mounted on the second adapter housing 461. In the embodiment of the present invention, the second adapter terminals 462 are Pogo terminals. Each of the second adapter terminals 462 includes a second fixed portion 4621 and a second movable portion 4622 mounted on the second fixed portion 4621 and capable of moving relative to the second fixed portion 4621. The second movable portion 4622 can move up and down relative to the second fixed portion 4621 under the action of a second spring (not shown). The top surface of the second fixed portion 4621 is directly electrically connected to (e.g., directly in contact with) the corresponding second elastic arm 22. The second movable portion 4622 is directly electrically connected to (eg, directly in contact with) the top surface of the second conductive column 451.

A person skilled in the art will appreciate that since the first movable portion 3622 and the second movable portion 4622 can be adjusted to a certain height in the up and down directions, the coplanarity of the contact plane can be compensated to a certain extent, thereby reducing the difficulty of manufacturing.

In order to reduce the manufacturing difficulty of the aforementioned first test fixture 31 and the aforementioned second test fixture 41 in the aforementioned first embodiment and the aforementioned second embodiment, the present invention proposes a new design idea. Please refer to Figures 19 to 25. In the third embodiment of the present invention, the aforementioned first detection assembly 30 includes a first test fixture 31. The aforementioned first test fixture 31 includes a first insulating base 313 and a first conductive part 35 fixed in the aforementioned first insulating base 313. The aforementioned first insulating base 313 includes a first surface 311 (for example, an upper surface), a second surface 312 (for example, a lower surface) opposite to the aforementioned first surface 311, and a first positioning groove 322. In the embodiment of the drawings of the present invention, the aforementioned first positioning groove 322 is two and is respectively located at the two ends of the aforementioned first insulating base 313 along the aforementioned first direction D1-D1.

The first conductive portion 35 includes a plurality of first switch portions 354 arranged at intervals along the first direction D1-D1. Each first switch portion 354 includes a first strip portion 3541 extending along the second direction D2-D2 and a first test column 3542 connected to the first strip portion 3541. The first strip portion 3541 is in contact with at least the first elastic arms 21 of the two conductive terminals 2. The first test columns 3542 are plural and at least exposed to the first surface 311. The first test columns 3542 are at least partially located between the first surface 311 and the second surface 312 along the thickness direction of the first test fixture 31. In the embodiment of the drawings of the present invention, the first test columns 3542 protrude upward from the first surface 311.

The second detection assembly 40 includes a second test fixture 41. The second test fixture 41 includes a second insulating base 413 and a second conductive portion 45 fixed in the second insulating base 413. The second insulating base 413 includes a third surface 411 (e.g., an upper surface), a fourth surface 412 (e.g., a lower surface) opposite to the third surface 411, and a second positioning groove 422. In the embodiment of the present invention, the second positioning groove 422 is two and is respectively located at two ends of the second insulating base 413 along the first direction D1-D1.

The second conductive portion 45 includes a plurality of second switch portions 454 arranged at intervals along the second direction D2-D2. Each second switch portion 454 includes a second strip portion 4541 extending along the first direction D1-D1 and a second test column 4542 connected to the second strip portion 4541. The second strip portion 4541 is in contact with at least the second elastic arms 22 of the two conductive terminals 2. The second test columns 4542 are plural and at least exposed to the fourth surface 412. The second test columns 4542 are at least partially located between the third surface 411 and the fourth surface 412 along the thickness direction of the second test fixture 41. In the embodiment of the drawings of the present invention, the second test columns 4542 protrude downward from the fourth surface 412.

The detection circuit can be formed by connecting two of the first strips 3541 or connecting two of the second strips 4541. A person skilled in the art can understand that the two first strips 3541 can be connected by connecting the first test posts 3542 on the two first strips 3541; and the two second strips 4541 can be connected by connecting the second test posts 4542 on the two second strips 4541.

Please refer to FIG. 26 to FIG. 30 , in the fourth embodiment of the present invention, the first detection assembly 30 includes a first test fixture 31. The first test fixture 31 includes a first insulating base 313 and a first conductive portion 35 fixed in the first insulating base 313. The first insulating base 313 includes a first surface 311 (e.g., an upper surface), a second surface 312 (e.g., a lower surface) opposite to the first surface 311, and a first positioning groove 322. In the embodiment of the present invention, there are two first positioning grooves 322 and they are respectively located at two ends of the first insulating base 313 along the first direction D1-D1.

The first conductive portion 35 is a plurality of first switch test posts 355 corresponding to the first elastic arm 21 and contacting the first elastic arm 21. In the embodiment of the present invention, the bottom surface of each first switch test post 355 contacts the corresponding first elastic arm 21, and each first switch test post 355 has an opening 3551 open upward, so that different first switch test posts 355 can be connected by inserting a conductive connector. The first switch test posts 355 are at least partially located between the first surface 311 and the second surface 312 along the thickness direction of the first test fixture 31, and the first switch test posts 355 are at least exposed to the first surface 311. In the embodiment of the present invention, the first switch test posts 355 protrude upward from the first surface 311.

The second detection assembly 40 includes a second test fixture 41. The second test fixture 41 includes a second insulating base 413 and a second conductive portion 45 fixed in the second insulating base 413. The second insulating base 413 includes a third surface 411 (e.g., an upper surface), a fourth surface 412 (e.g., a lower surface) opposite to the third surface 411, and a second positioning groove 422. In the embodiment of the present invention, the second positioning groove 422 is two and is respectively located at two ends of the second insulating base 413 along the first direction D1-D1.

The second conductive portion 45 includes a plurality of second switch portions 454. Each second switch portion 454 includes a body portion 455 and a second test column 4542 connected to the body portion 455. The second test column 4542 is at least partially located between the third surface 411 and the fourth surface 412 along the thickness direction of the second test fixture 41. In the embodiment of the diagram of the present invention, the second test column 4542 protrudes downward from the fourth surface 412. The body portion 455 contacts the second elastic arm 22 of at least a portion of the plurality of conductive terminals 2 distributed along the first direction D1-D1 and along the second direction D2-D2. The detection circuit can be formed by connecting two of the first switch test columns 355.

Those skilled in the art will understand that since the first switch test posts 355 are independent of each other, the conductive connectors are used to connect different first switch test posts 355, so that the conductive terminals 2 on the detection circuit can be easily locked. Therefore, once the output signal of the detection circuit has a problem, it can be accurately determined which conductive terminal 2 has an abnormality, which is conducive to improving the accuracy of the detection.

Compared with the prior art, the detection fixture of the present invention includes a first detection assembly 30 and a second detection assembly 40, wherein the first detection assembly 30 is configured to press the first elastic arm 21 to cause the first elastic arm 21 to be elastically deformed; the second detection assembly 40 is configured to press the second elastic arm 22 to cause the second elastic arm 22 to be elastically deformed, so as to control the downward pressure of the conductive terminal 2. In addition, the first conductive part 35, the corresponding first elastic arm 21, the corresponding second elastic arm 22 and the second conductive part 45 form a detection circuit (for example, a detection circuit formed in series), which is used to detect the conductive terminal 2 in the detection circuit, thereby improving the convenience and accuracy of the detection.

The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the aforementioned embodiments, ordinary technical personnel in the relevant technical field should understand that the technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements thereof that do not deviate from the spirit and scope of the present invention should be covered within the scope of the patent application of the present invention.

1: Insulating body 100: Board-to-board connector 11: First mounting surface 12: Second mounting surface 13: First clamping block 14: Second clamping block 2: Conductive terminal 20: Fixing part 21: First elastic arm 22: Second elastic arm 30: First detection assembly 31: First test fixture 311: First surface 312: Second surface 313: First insulating base 32: First fixing seat 321: First middle hollow groove 322: First positioning groove 33: First pressing plate 34: First fastener 35: First conductive part 351: First conductive column 352: First connecting piece 353: first U-shaped connection path 354: first switch part 3541: first strip part 3542: first test column 355: first switch test column 3551: opening 36: first adapter module 361: first adapter housing 362: first adapter terminal 3621: first fixed part 3622: first movable part 40: second detection assembly 41: second test fixture 411: third surface 412: fourth surface 413: second insulating base 42: second fixing seat 421: second middle hollow groove 422: second positioning groove 43: second pressing plate 44: second fastener 45: second conductive part 451: second conductive column 452: Second connecting piece 453: Second U-shaped connecting path 454: Second switch part 4541: Second strip part 4542: Second test column 455: Main body 46: Second adapter module 461: Second adapter housing 462: Second adapter terminal 4621: Second fixed part 4622: Second movable part A-A, C-C, E-E, G-G: Line B: Picture frame part in Figure 10 D: Picture frame part in Figure 17 D1-D1: First direction D2-D2: Second direction F: Picture frame part in Figure 24 G1: First gap G2: Second gap H: Picture frame part in Figure 29 H1, H2, H1’, H2’: Height H1-H1’: First downward pressure H2-H2’: Second pressure drop Input: Signal input terminal Output: Signal output terminal

FIG1 is a three-dimensional schematic diagram of the detection fixture and the board-to-board connector in the first embodiment of the present invention when they are assembled together. FIG2 is a partial three-dimensional exploded view of FIG1. FIG3 is a partial three-dimensional exploded view of FIG2 from another angle. FIG4 is a further three-dimensional exploded view of FIG2. FIG5 is a partial three-dimensional exploded view of FIG4 from another angle. FIG6 is a further three-dimensional exploded view of FIG4. FIG7 is a three-dimensional exploded view of FIG6 from another angle. FIG8 is a three-dimensional schematic diagram of a conductive terminal in FIG6. FIG9 is a three-dimensional schematic diagram of FIG8 from another angle. FIG10 is a cross-sectional schematic diagram along the A-A line in FIG1. FIG11 is a partial enlarged view of the frame portion B in FIG10. FIG12 is a three-dimensional schematic diagram of the detection fixture and the board-to-board connector in the second embodiment of the present invention when they are assembled together. FIG13 is a partial three-dimensional exploded view of FIG12. Fig. 14 is a partial three-dimensional exploded view from another angle of Fig. 13. Fig. 15 is a further partial three-dimensional exploded view of Fig. 13. Fig. 16 is a partial three-dimensional exploded view from another angle of Fig. 15. Fig. 17 is a schematic cross-sectional view along line C-C in Fig. 12. Fig. 18 is a partial enlarged view of the frame portion D in Fig. 17. Fig. 19 is a schematic three-dimensional view of the detection fixture and the board-to-board connector in the third embodiment of the present invention when assembled together. Fig. 20 is a partial three-dimensional exploded view of Fig. 19. Fig. 21 is a partial three-dimensional exploded view from another angle of Fig. 20. Fig. 22 is a further partial three-dimensional exploded view of Fig. 20. Fig. 23 is a partial three-dimensional exploded view from another angle of Fig. 22. Fig. 24 is a schematic cross-sectional view along line E-E in Fig. 19. Fig. 25 is a partial enlarged view of the frame portion F in Fig. 24. FIG26 is a three-dimensional schematic diagram of the detection fixture and the board-to-board connector in the fourth embodiment of the present invention when assembled together. FIG27 is a partial three-dimensional exploded view of FIG26. FIG28 is a partial three-dimensional exploded view of FIG27 from another angle. FIG29 is a cross-sectional schematic diagram along the G-G line in FIG26. FIG30 is a partial enlarged view of the frame portion H in FIG29. FIG31 is a comparative schematic diagram of a conductive terminal of the board-to-board connector in the first embodiment of the present invention before and after being pressed down by the detection fixture.

1: Insulation body

100: Board-to-board connector

11: First mounting surface

12: Second mounting surface

2: Conductive terminal

21: First elastic arm

22: Second elastic arm

31: The first test fixture

311: First surface

312: Second surface

351: First conductive column

352: First connecting piece

353: First U-shaped connection path

41: Second test fixture

411: Third surface

412: The fourth surface

451: Second conductive column

452: Second connecting piece

453: Second U-shaped connection path

B: The frame part in Figure 10

G1: First gap

G2: Second gap

Input: signal input terminal

Claims (15)

A testing fixture, wherein the testing fixture is configured to test a board-to-board connector; the board-to-board connector includes an insulating body and a plurality of conductive terminals fixed to the insulating body, the insulating body includes a first mounting surface and a second mounting surface opposite to the first mounting surface, each conductive terminal includes a first elastic arm protruding from the first mounting surface and a second elastic arm protruding from the second mounting surface; the testing fixture includes: a first testing assembly, the first testing assembly is configured to press against the first elastic arm to cause the first elastic arm to deform elastically; the first testing assembly includes a first test fixture, the first test fixture includes a first conductive portion, the first conductive portion is configured to be directly or indirectly electrically connected to the corresponding first elastic arm; and The second detection assembly is configured to press against the second elastic arm to cause the second elastic arm to deform elastically; the second detection assembly includes a second test fixture, the second test fixture includes a second conductive part, and the second conductive part is configured to be directly or indirectly electrically connected to the corresponding second elastic arm; Wherein, the first conductive part, the corresponding first elastic arm, the corresponding second elastic arm and the second conductive part form a detection circuit. The detection fixture as described in claim 1, wherein: the first detection component is configured to press the first elastic arm with a first downward pressure to cause the first elastic arm to elastically deform; the second detection component is configured to press the second elastic arm with a second downward pressure to cause the second elastic arm to elastically deform. The detection fixture as described in claim 2, wherein: the first detection assembly is provided with a first downward pressure surface facing the first mounting surface; when the first detection assembly presses the first elastic arm with the first downward pressure, a first gap exists between the first downward pressure surface and the first mounting surface; The second detection assembly is provided with a second downward pressure surface facing the second mounting surface; when the second detection assembly presses the second elastic arm with the second downward pressure, a second gap exists between the second downward pressure surface and the second mounting surface. A testing fixture as described in claim 1, wherein: the first testing fixture includes a first surface and a second surface opposite to the first surface; the first conductive portion includes a plurality of first conductive posts at least partially located between the first surface and the second surface along the thickness direction of the first testing fixture, and a first connecting piece connecting two adjacent first conductive posts; and an end of the first conductive post away from the first surface is directly electrically connected to the corresponding first elastic arm. A testing fixture as described in claim 4, wherein: the second testing fixture includes a third surface and a fourth surface opposite to the third surface; the second conductive portion includes a plurality of second conductive posts at least partially located between the third surface and the fourth surface along the thickness direction of the second testing fixture, and a second connecting piece connecting two adjacent second conductive posts; and an end of the second conductive post away from the fourth surface is directly electrically connected to the corresponding second elastic arm. The detection fixture as described in claim 5, wherein: one of the plurality of first conductive posts is configured as a signal input terminal, and two adjacent first conductive posts and a first connecting piece form a first U-shaped connection path; one of the plurality of second conductive posts is configured as a signal output terminal, and two adjacent second conductive posts and a second connecting piece form a second U-shaped connection path. The test fixture as described in claim 5, wherein: the first test fixture is a first circuit board, and the first connecting piece is exposed on the first surface; the second test fixture is a second circuit board, and the second connecting piece is exposed on the fourth surface. The detection fixture as claimed in claim 1, wherein: the first detection assembly includes a first adapter module, the first adapter module includes a plurality of first adapter terminals, each first adapter terminal includes a first fixed portion and a first movable portion mounted on the first fixed portion and capable of moving relative to the first fixed portion; the first fixed portion is directly electrically connected to the corresponding first elastic arm; The first test fixture includes a first surface and a second surface opposite to the first surface; the first conductive portion includes a plurality of first conductive posts at least partially located between the first surface and the second surface along the thickness direction of the first test fixture, and a first connecting piece connecting two adjacent first conductive posts; an end of the first conductive post away from the first surface abuts against the corresponding first movable portion. The detection fixture as described in claim 8, wherein: the second detection assembly includes a second adapter module, the second adapter module includes a plurality of second adapter terminals, each second adapter terminal includes a second fixed portion and a second movable portion mounted on the second fixed portion and capable of moving relative to the second fixed portion; the second fixed portion is directly electrically connected to the corresponding second elastic arm; the second test fixture includes a third surface and a fourth surface opposite to the third surface; the second conductive portion includes a plurality of second conductive posts at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture, and a second connecting piece connecting two adjacent second conductive posts; the end of the second conductive post away from the fourth surface abuts against the corresponding second movable portion. The test fixture as described in claim 9, wherein: one of the plurality of first conductive posts is configured as a signal input terminal, and two adjacent first conductive posts and a first connecting piece form a first U-shaped connection path; one of the plurality of second conductive posts is configured as a signal output terminal, and two adjacent second conductive posts and a second connecting piece form a second U-shaped connection path; the first test fixture is a first circuit board, and the first connecting piece is exposed on the first surface; the second test fixture is a second circuit board, and the second connecting piece is exposed on the fourth surface. The detection fixture as described in claim 1, wherein: some of the plurality of conductive terminals are arranged along the first direction, and the other are arranged along the second direction, and the first direction and the second direction are perpendicular to each other; The first conductive part includes a plurality of first switch parts arranged at intervals along the first direction, each of the first switch parts includes a first strip extending along the second direction, and the first strip is in contact with at least the first elastic arms of two of the conductive terminals; The second conductive part includes a plurality of second switch parts arranged at intervals along the second direction, each of the second switch parts includes a second strip extending along the first direction, and the second strip is in contact with at least the second elastic arms of two of the conductive terminals; Wherein, the detection circuit can be formed by connecting two of the first strips or connecting two of the second strips. The test fixture as claimed in claim 11, wherein: the first test fixture comprises a first surface and a second surface opposite to the first surface, the first switch portion is close to the second surface; the first conductive portion further comprises a first test post connected to the first strip portion and at least exposed to the first surface; the first test post is at least partially located between the first surface and the second surface along the thickness direction of the first test fixture; the second test fixture comprises a third surface and a fourth surface opposite to the third surface, the second switch portion is close to the third surface; the second conductive portion further comprises a second test post connected to the second strip portion and at least exposed to the fourth surface; the second test post is at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture. The detection fixture as described in claim 1, wherein: some of the plurality of conductive terminals are arranged along the first direction, and the other are arranged along the second direction, and the first direction and the second direction are perpendicular to each other; The first conductive part includes a plurality of first switch test posts corresponding to the first elastic arm and contacting the first elastic arm; The second conductive part includes a body, and the body contacts the second elastic arm of at least part of the plurality of conductive terminals distributed along the first direction and along the second direction; Wherein, the detection circuit can be formed by connecting two of the first switch test posts. The test fixture as claimed in claim 13, wherein: the first test fixture comprises a first surface and a second surface opposite to the first surface, the first switch test post is at least partially located between the first surface and the second surface along the thickness direction of the first test fixture, and the first switch test post is at least exposed to the first surface; the second test fixture comprises a third surface and a fourth surface opposite to the third surface, the body is close to the third surface; the second conductive part further comprises a second test post connected to the body and at least exposed to the fourth surface; the second test post is at least partially located between the third surface and the fourth surface along the thickness direction of the second test fixture. A testing fixture as described in any one of claims 1 to 14, wherein: the testing fixture includes a first clamping block and a second clamping block clamped at two ends of the insulating body; the first testing assembly is provided with a first positioning groove; the second testing assembly is provided with a second positioning groove; the first clamping block and the second clamping block are both positioned in the first positioning groove and the second positioning groove.