CN113848515A

CN113848515A - Detector

Info

Publication number: CN113848515A
Application number: CN202110531875.4A
Authority: CN
Inventors: 陈欢; 夏晨; 马向阳
Original assignee: Kunshan Depufu Electronic Technology Co ltd
Current assignee: Kunshan Depufu Electronic Technology Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-28
Anticipated expiration: 2041-05-17
Also published as: CN113848515B

Abstract

The invention discloses a detector which is used for testing terminals of a board-to-board connector. The first spring elastically abuts between the third seat body and the flange, and the second spring elastically abuts between the first platform part and the second platform part. According to the invention, through two-stage floating of the first spring and the second spring, when the plug just starts to contact the board-to-board connector, the plug contact is changed into the first-stage floating contact through elastic floating of the second spring, and after further correction, the second-stage floating is realized through the floating of the first spring and the plug contact, so that the reliability of the detector is higher.

Description

Detector

Technical Field

The invention relates to the field of electronic element testing, in particular to a detector.

Background

Prior art relating to the present invention please refer to chinese patent application publication No. CN110088632A, which discloses a probe structure having a plug 4, a coaxial probe 6, a flange 8, a spring 10, and a connector 14. By biasing the plug 4 by the spring 10, the housing 30 attached to the plug 4 is always biased in the direction of fitting with the flange 8. Thus, when positioning the connector 3 in the groove portion of the plug 4, positioning can be performed in a state where the rotational positions of the plug 4 and the housing 30 are determined. Therefore, the connector 3 can be positioned with high accuracy.

However, in this patent, only one spring 10 is floating and the spring 10 is located at the rear side away from the plug 4, with the risk of damage to both the connector and the plug 4 when the plug is initially in contact with the connector 3 or is in hard contact.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a highly safe probe is provided.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a probe for testing terminals of a board-to-board connector, the probe comprising a plug, a flange, a first spring, a second spring, a first fastener and a test core;

the plug comprises a first seat body, a second seat body, a third seat body and a sealing cover, wherein the first seat body comprises a first platform part and a first barrel part extending forwards from the first platform part, the first barrel part is provided with a first barrel cavity and a first through hole positioned in front of the first barrel cavity, and the transverse length of the first through hole is smaller than that of the first barrel cavity;

the second seat body comprises a second platform part and a second cylinder part extending forwards from the second platform part, the second cylinder part is provided with a second cylinder cavity and a second through hole positioned in front of the second cylinder cavity, the front end of the first cylinder part is accommodated in the second cylinder cavity, the first platform part is positioned behind the first cylinder cavity, the first platform part and the second platform surface are oppositely arranged, the transverse length of the second through hole is smaller than that of the second cylinder cavity, and the second through hole and the first through hole are correspondingly arranged in the front-rear direction;

the sealing cover is sleeved on the periphery of the second cylinder part and is positioned on the front side of the second platform part, the sealing cover is abutted to the first platform part through a first fastener, the sealing cover is provided with a groove with an opening facing the third seat body, the second platform part is positioned in the groove, and the depth of the groove is greater than the thickness of the second platform part;

the third seat body is positioned in front of the flange and behind the first seat body, the first spring is elastically abutted between the third seat body and the flange, and the second spring is elastically abutted between the first platform part and the second platform part;

the testing core body comprises a core body part and a cable part, the core body part comprises a front end part, a rear end part and a middle part, the transverse length of the front end part is smaller than that of the middle part, the front end part can move back and forth in the first through hole and the second through hole, the middle part is limited in the first barrel cavity, the first barrel part limits the position limit of the middle part moving forwards, and the third seat body limits the position limit of the rear end part moving backwards.

Compared with the prior art, the invention realizes the first-stage floating contact of the plug through the elastic floating of the second spring when the plug just starts to contact the board-to-board connector through the two-stage floating of the first spring and the second spring, and realizes the second-stage floating of the plug through the floating of the first spring after the plug is further corrected with the board-to-board connector, thereby having higher safety of the detector.

Furthermore, the first platform part is in a round-corner rectangular shape, and four corners of the first platform part are respectively provided with a first concave part with an opening facing the second platform part;

the second platform part is in a round-corner rectangular shape, four corners of the second platform part are respectively provided with a second concave part with an opening facing the second platform part, and the second concave part and the first concave part are at least partially arranged in an aligned mode;

the detector comprises four second springs, each second spring is clamped between one corner of the first platform part and one corresponding corner of the second platform part, a first end part of each second spring is located in the corresponding first concave part, and a second end part of each second spring is located in the corresponding second concave part.

Furthermore, the detector also comprises a second fastening piece, the first platform part is provided with a first screw hole, and the third seat body is provided with a second screw hole which is arranged corresponding to the first screw hole;

the second fastening piece is screwed in the first screw hole and the second screw hole so as to fix the first platform part and the third seat body, and the second fastening piece is positioned between two adjacent second springs.

Furthermore, the first platform part is provided with a third screw hole, and the sealing cover is provided with a fourth screw hole which is arranged corresponding to the third screw hole;

the first fastening piece is screwed in the third screw hole and the fourth screw hole so as to fix the cover with the first platform part, and the first fastening piece is positioned between two adjacent second springs;

the first fastener and the second fastener are located on different side wall sides of the four side walls of the first platform portion.

Further, the second platform part is provided with a avoiding hole correspondingly arranged with a third screw hole and a fourth screw hole, the aperture of the avoiding hole is larger than that of the third screw hole, and the aperture of the avoiding hole is larger than that of the fourth screw hole.

Further, the third seat body comprises a main body part and an extension part extending forwards from the main body part, and the transverse length of the main body part is greater than that of the extension part;

the cross-sectional shape of the extension part is the same as that of the first platform part, and the cross-sectional area of the extension part is equal to that of the first platform part;

and orthographically projecting on a plane perpendicular to the front-back direction, wherein the projection of the extension part is coincident with the projection of the first platform part, and the projection of the extension part falls into the projection of the main body part.

Furthermore, the third seat body comprises a third cylinder cavity penetrating through the extension part and the main body part, the main body part is provided with a first guide hole and a second guide hole, and the first guide hole and the second guide hole are positioned on different sides of the third cylinder cavity in the transverse direction;

the flange comprises a first mounting hole arranged corresponding to the first guide hole and a second mounting hole arranged corresponding to the second guide hole;

the detector comprises a first guide pillar and a second guide pillar, one end of the first guide pillar is limited on the hole wall corresponding to the first mounting hole, and the other end of the first guide pillar is inserted into the first guide hole;

one end of the second guide pillar is limited on the hole wall corresponding to the second mounting hole, and the other end of the second guide pillar is inserted into the second guide hole;

the detector comprises two first springs, wherein one first spring is sleeved outside the first guide post, and the other spring is sleeved outside the second guide post.

Further, the detector comprises a first screw and a second screw, the first guide pillar is provided with a first pillar hole penetrating along the length direction of the first guide pillar, and the second guide pillar is provided with a second pillar hole penetrating along the length direction of the second guide pillar;

the first screw is positioned in the first column hole, the second screw is positioned in the second column hole, one end of the first screw is fixed at one end of the first guide column, and the other end of the first screw is inserted into the main body part of the third seat body;

one end of the second screw is fixed to one end of the second guide post, and the other end of the second screw is inserted into the main body part of the third seat body.

Furthermore, the test core comprises a shell, a probe and a cable connector, wherein the probe comprises a detection part, a middle part and a connecting part, at least part of the detection part is exposed outside the shell, the middle part is positioned inside the shell, and the connecting part is physically and electrically connected with the cable connector;

the cable connector includes a cable and a header, the cable being connected between the header and the probe.

Further, the shell is a metal piece and comprises a first shell, a second shell and a third shell which are assembled together, wherein the second shell is positioned between the first shell and the third shell;

the first shell having a first bore portion, the test core including a first insulator, the first insulator being located within the first bore portion, the first insulator having a first through bore portion;

the second shell having a second bore portion, the test core including a second insulator located within the second bore portion, the second insulator having a second through bore portion;

the third shell is provided with a third hole part, the testing core body comprises a third insulator, the third insulator is located in the third hole part, and the third insulator is provided with a third through hole part.

The probe has a first portion located in the first through-hole portion, a second portion located in the first and second hole portions, and a third portion located in the second through-hole portion;

the cable is provided with a conductive core body, and the front end of the conductive core body is located in the third through hole portion.

Drawings

FIG. 1 is a perspective view of a probe according to an embodiment of the present invention.

FIG. 2 is another perspective view of a detector according to an embodiment of the present invention.

Fig. 3 is an exploded view of a sonde according to an embodiment of the present invention.

Fig. 4 is a further exploded view of a sonde according to an embodiment of the present invention.

Fig. 5 is an exploded view of another perspective of a sonde according to an embodiment of the present invention.

Fig. 6 is a further exploded view of a sonde according to an embodiment of the present invention.

Fig. 7 is an exploded view from another perspective of a sonde according to an embodiment of the present invention.

FIG. 8 is a perspective cross-sectional view of a probe according to an embodiment of the invention.

Figure 9 is an enlarged view of a portion of the detector shown in figure 7.

FIG. 10 is another perspective cross-sectional view of a probe according to an embodiment of the invention.

FIG. 11 is a further perspective cross-sectional view of a probe in accordance with an embodiment of the invention.

FIG. 12 is a further perspective cross-sectional view of a probe in accordance with an embodiment of the invention.

Fig. 13 is a perspective view of a probe in combination with a board-to-board connector in accordance with an embodiment of the present invention.

Fig. 14 is a perspective view of a probe and board-to-board connector of an embodiment of the present invention when not engaged.

The figure elements symbolize:

a probe 100;

the plug 10, the first holder 11, the first platform part 111, the first barrel part 112, the first barrel cavity 113, the first through hole 114, the first recess 115, the first screw hole 116, the third screw hole 117, the first side wall 118, the first front wall 119, the second holder 12, the second platform part 121, the second barrel part 122, the second barrel cavity 123, the second through hole 124, the second recess 125, and the avoiding hole 126;

a third seat 13, a main body 131, an extension 132, a third cylindrical cavity 133, a first guide hole 134, and a second guide hole 135;

the sealing cover 14, the groove 141, the second screw hole 142, the fourth screw hole 144 and the third through hole 145;

a first guide post 15, a first post hole 151, a second guide post 16, a second post hole 161, a first screw 17, a second screw 18;

flange 21, first mounting hole 211, second mounting hole 212;

a first spring 31, a second spring 32, a first fastener 33, a second fastener 34;

a test core 40, a core portion 41, a front end portion 411, a rear end portion 412, a middle portion 413, a cable portion 42, a case 43, a first shell 431, a second shell 432, a third shell 433, a first hole portion 434, a second hole portion 435, a third hole portion 436, a probe 44, a probing portion 441, an intermediate portion 442, a connecting portion 443, a first portion 444, a second portion 445, a third portion 446, a cable connector 45, a cable 451, a joint 452, a conductive core 453;

a first fitting slot 461, a first fitting projection 462, a second fitting slot 463, a second fitting projection 464;

first, second, third, fourth and fifth

sub-hole portions

471, 472, 473, 474 and 475

A first insulator 51, a first through hole 511, a second insulator 52, a second through hole 521, a third insulator 53, and a third through hole 531;

board-to-board connector 200, terminals 201.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Similarly, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; "plurality" means two or more than two. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

Referring to fig. 1-12, an embodiment of a probe 100 is shown in accordance with the present application. As shown in fig. 13 to 14, a diagram is applied to the probe 100 and the board-to-board connector 200. The probe 100 is used to test the high frequency performance of the terminals 201 of the board-to-board connector 200.

As shown in fig. 1 to 12, the probe 100 includes a plug 10, a flange 21, a first spring 31, a second spring 32, a first fastener 33, and a test core 40.

As shown in fig. 3 to 5, the plug 10 includes a first housing 11, a second housing 12, a third housing 13, and a cover 14, the first housing 11 includes a first platform portion 111 and a first barrel portion 112 extending forward from the first platform portion 111, the first barrel portion 112 has a first barrel cavity 113 and a first through hole 114 located in front of the first barrel cavity 113, and a transverse length of the first through hole 114 is smaller than a transverse length of the first barrel cavity 113.

The first cylindrical portion 112 has four first side walls 118 and a first front wall 119 connecting front ends of the four first side walls 118, the four first side walls 118 are provided around the periphery of the first cylindrical cavity 113, and the first through hole 114 penetrates the first front wall 119 and communicates with the first cylindrical cavity 113. The cross-sectional area of the first tubular portion 112 is smaller than the cross-sectional area of the first platform portion 111, and the projection of the first tubular portion 112 falls entirely within the projection of the first platform portion 111 in an orthogonal projection on a plane perpendicular to the front-rear direction.

The second seat 12 includes a second platform portion 121 and a second cylindrical portion 122 extending forward from the second platform portion 121, and the second cylindrical portion 122 has a second cylindrical cavity 123 and a second through-hole 124 located in front of the second cylindrical cavity 123. The front end of the first tube 112 is accommodated in the second tube chamber 123, the first platform 111 is located at the rear outside the first tube chamber 113, and the first platform 111 and the second platform 121 are disposed facing each other. The second through hole 124 has a transverse length smaller than that of the second cylinder chamber 123, and the second through hole 124 is disposed to correspond to the first through hole 114 in the front-rear direction.

The second cylinder 122 has four second side walls 128 and a second front wall 129 connecting front ends of the four second side walls 128, the four second side walls 128 are provided around an outer periphery of the second cylinder chamber 123, and the second through hole 124 penetrates the second front wall 129 and communicates with the second cylinder chamber 123. The cross-sectional area of the second cylindrical portion 122 is smaller than the cross-sectional area of the second platform portion 121, and the projection of the second cylindrical portion 122 falls entirely within the projection of the second platform portion 121 in the orthogonal projection on the plane perpendicular to the front-rear direction.

As shown in fig. 11, the second cylinder 122 is disposed around the first cylinder 112, and the second sidewall 128 surrounds the first sidewall 118. The second front wall 129 is located forward of the first front wall 119, and the second front wall 129 is capable of supporting the first front wall 119 and limiting the forward movement of the first front wall 119.

As shown in fig. 5, 11 and 12, the cover 14 is sleeved on the periphery of the second cylinder 122, the cover 14 is located at the front side of the second platform 121, and the cover 14 is abutted to the first platform 111 through the first fastening member 33.

The cover 14 has a groove 141 opened toward the third housing 13, the second platform part 121 is located in the groove 141, and the depth of the groove 141 is greater than the thickness of the second platform part 121 so that the second platform part 121 can move back and forth in the groove 141. As shown in fig. 3 and 4, the cap 14 has a third through hole 145 penetrating in the cap thickness direction, the third through hole 145 communicating with the groove 141, the third through hole 145 for the first cylindrical portion 112 and the second cylindrical portion 122 to penetrate in the backward-forward direction.

The third seat 13 is located in front of the flange 21, the third seat 13 is located behind the first seat 11, the first spring 31 elastically abuts between the third seat 13 and the flange 21, and the second spring 32 elastically abuts between the first platform 111 and the second platform 121. According to the invention, two-stage floating of the first spring 31 and the second spring 32 is adopted, when the plug 10 just starts to contact the board-to-board connector 200, the second spring 32 elastically floats to enable the plug 10 to contact to realize first-stage floating contact, and after the plug is further corrected with the board-to-board connector 200, the first spring 31 floats to enable the plug 10 to contact to realize second-stage floating, so that the safety of the detector 100 is higher.

As shown in fig. 11, the test core 40 includes a core portion 41 and a cable portion 42, the core portion 41 includes a front end portion 411, a rear end portion 412 and a middle portion 413, the front end portion 411 has a transverse length smaller than that of the middle portion 413, and the front end portion 411 can move back and forth in the first through hole 114 and the second through hole 124. The middle portion 413 is limited in the first cylindrical cavity 113, the first front wall 119 of the first cylindrical portion 112 limits the position limit of the forward movement of the middle portion 413, and the third seat 13 limits the position limit of the backward movement of the rear end portion 412.

As shown in fig. 4 to 7 and 12, the first platform 111 has a rounded rectangular shape, and each of four corners of the first platform 111 is provided with a first concave portion 115 that opens toward the second platform 121. The second platform part 121 has a rounded rectangular shape, and the four corners of the second platform part 121 are respectively provided with a second recess 125 opening toward the second platform part 121, and the second recess 125 and the first recess 115 are at least partially aligned.

The prober 100 includes four second springs 32, each second spring 32 being sandwiched between one corner of the first platform portion 111 and a corresponding one corner of the second platform portion 121, a first end portion of the second spring 32 being located in the first recess 115, and a second end portion of the second spring 32 being located in the second recess 125. The provision of the four second springs 32 enhances the uniformity of the force applied in all directions by the elastic floating when the probe 100 is butted against the board-to-board 200, so that the probe 100 is safer.

As shown in fig. 10, the detector 100 further includes a second fastening member 34, the first platform portion 111 is provided with a first screw hole 116, and the third fastening body 13 is provided with a second screw hole 142 corresponding to the first screw hole 116. The second fastening member 34 is screwed into the first screw hole 116 and the second screw hole 142, thereby fixing the first platform part 111 and the third seat 13, and the second fastening member 34 is located between two adjacent second springs 32.

As shown in fig. 4 and 12, the first platform portion 111 has a third screw hole 117, and the cover 14 has a fourth screw hole 144 provided corresponding to the third screw hole 117. The first fastening member 33 is screwed into the third screw hole 117 and the fourth screw hole 144, so that the cover 14 is fixed to the first platform 111, and the first fastening member 33 is located between two adjacent second springs 32.

As shown in fig. 4, the first fastening member 33 and the second fastening member 34 are located at different side walls of the four side walls of the first platform part 111, thereby optimizing space utilization and reducing space occupation.

The second platform part 121 has an avoiding hole 126 provided corresponding to the third screw hole 117 and the fourth screw hole 144, the aperture of the avoiding hole 126 is larger than the aperture of the third screw hole 117, and the aperture of the avoiding hole 126 is larger than the aperture of the fourth screw hole 144. The avoiding hole 126 is disposed to avoid the first fastening member 33 from touching the first fastening member 11, so that the first platform 111 can freely move in the groove 141 of the cover 14.

The third housing 13 includes a main body 131 and an extension 132 extending forward from the main body 131, and the main body 131 has a transverse length greater than that of the extension 132. The cross-sectional shape of the extension portion 132 is the same as the cross-sectional shape of the first platform portion 111, and the cross-sectional area of the extension portion 132 is the same as the cross-sectional area of the first platform portion 111. In a planar orthogonal projection perpendicular to the front-rear direction, the projection of the extension portion 132 coincides with the projection of the first platform portion 111, and the projection of the extension portion 132 falls within the projection of the main body portion 131.

The third housing 13 includes a third cylindrical cavity 133 penetrating the extension portion 132 and the main body portion 131, the main body portion 131 is provided with a first guide hole 134 and a second guide hole 135, and the first guide hole 134 and the second guide hole 135 are located at different sides of the third cylindrical cavity 133 in the lateral direction. The flange 21 includes a first mounting hole 211 provided corresponding to the first guide hole 134 and a second mounting hole 212 provided corresponding to the second guide hole 135.

The detector 100 includes a first guide post 15 and a second guide post 16, wherein one end of the first guide post 15 is limited on the hole wall corresponding to the first mounting hole 211, and the other end of the first guide post 15 is inserted into the first guide hole 134. One end of the second guide post 16 is limited on the hole wall corresponding to the second mounting hole 212, and the other end of the second guide post 16 is inserted into the second guide hole 135.

The probe 100 includes two first springs 31, one of the first springs 31 is sleeved outside the first guide post 15, and the other spring is sleeved outside the second guide post 16. The arrangement of two first springs 31 increases the float uniformity and enhances the float redundancy relative to a prior art one spring arrangement.

The probe 100 includes a first screw 17 and a second screw 18, the first guide post 15 having a first post hole 151 therethrough along the length of the first guide post 15, and the second guide post 16 having a second post hole 161 therethrough along the length of the second guide post 16. The first screw 17 is located in the first column hole 151, the second screw 18 is located in the second column hole 161, one end of the first screw 17 fixes one end of the first guide column 15, and the other end of the first screw 17 is inserted into the main body 131 of the third seat 13. One end of the second screw 18 is fixed to one end of the second guide post 16, and the other end of the second screw 18 is inserted into the body 131 of the third seat 13.

As shown in fig. 1, 2, 8 and 9, the testing core 40 includes a housing 43, a probe 44 and a cable connector 45, the probe 44 includes a probing portion 441, an intermediate portion 442 and a connecting portion 443, the probing portion 441 is at least partially exposed outside the housing 43, the intermediate portion 442 is located inside the housing 43, and the connecting portion 443 is physically and electrically connected to the cable connector 45.

The cable connector 45 includes a cable 451 and a fitting 452, with the cable 451 being connected between the fitting 452 and the probe 44.

The housing 43 is a metal member, and the metal member 43 can enhance shielding of the probe 44, so that high-frequency testing performance can be improved. The housing 43 includes a first shell 431, a second shell 432, and a third shell 433 assembled to each other, and the second shell 432 is located between the first shell 431 and the third shell 433. Compared with the integrated shell in the prior art, the three shells assembled together can be disassembled to replace the probe 44 when the service life of the probe 44 is over or the probe 44 fails, so that the use cost of the integrated shell which needs to be scrapped is saved.

As shown in fig. 5 and 6, the first case 431 has a first fitting groove 461, the second case 432 has a first fitting projection 462 and a second fitting groove 463, and the third case 433 has a second fitting projection 464. The first fitting protrusion 462 is inserted into the first fitting groove 461 and is in interference fit with the groove wall of the first fitting groove 461, and the second fitting protrusion 464 is inserted into the second fitting groove 463 and is in interference fit with the groove wall of the second fitting groove 463. Thus, the first shell 431, the second shell 432 and the third shell 433 are assembled together to have a certain fixing effect, and after being assembled together, are not easily dispersed when being installed in the first seat 11. When needing to be disassembled, the disassembly can be realized through certain pulling force, thereby having simple structure and convenient disassembly.

As shown in fig. 9, the first shell 431 has a first hole portion 434, and the test core 40 includes a first insulator 51, the first insulator 51 being located in the first hole portion 434, the first insulator 51 having a first through hole portion 511.

The second shell 432 has a second hole portion 435, and the test core 40 includes a second insulator 52, the second insulator 52 being located in the second hole portion 435, the second insulator 52 having a second through-hole portion 521. Third housing 433 has a third bore section 436, and test core 40 includes a third insulator 53, third insulator 53 being located in third bore section 436, third insulator 53 having a third through-bore section 531.

The probe 44 includes a first portion 444, a second portion 445, and a third portion 446, the first portion 444 is located in the first through hole 511, the second portion 445 is located in the first through hole 434 and the second through hole 435, and the third portion 446 is located in the second through hole 124. The cable 451 has a conductive core 453, and a tip end of the conductive core 453 is located in the third through hole 531. The third insulator 53 insulates and isolates the electrical connection between the conductive core 453 and the third shell 433.

The first hole portion 434 includes a first sub-hole portion 471, a second sub-hole portion 472, and a third sub-hole portion 473 in this order from front to back, the second sub-hole portion 472 having a larger aperture than the first sub-hole portion 471, and the third sub-hole portion 473 having a larger aperture than the second sub-hole portion 472. The diameter of the first insulator 51 corresponds to the diameter of the second sub-hole portion 472, and the first portion 444 of the probe 44 is located at the first sub-hole portion 471 and does not physically contact the first case 431. The first insulator 51 insulates the probe 44 from electrical connection with the first housing 431. The diameter of the first insulator 51 is equal to that of the second sub-hole part 472, thereby facilitating the mounting and pre-fixing of the first insulator 51. The second portion 445 is located within the third sub-hole portion 473 and is not in physical contact with the first case 431.

Second hole portion 435 includes a fourth sub-hole portion 474 and a fifth sub-hole portion 475 that are arranged in this order from the rear to the front, and the aperture of fifth sub-hole portion 475 is larger than the aperture of fourth sub-hole portion 474. The diameter of the second insulator 52 corresponds to the diameter of the fourth sub-hole 474, and the third portion 446 of the probe 44 is located in the fourth sub-hole 474 and does not contact the second housing 432. The second insulator 52 insulates the probe 44 from electrical contact with the second housing 432. The diameter of the second insulator 52 is equal to the diameter of the fourth sub-hole part 474, thereby facilitating the mounting and pre-fixing of the second insulator 52. The second portion 445 is located within the fifth sub-hole 475 and does not contact the second insulator 52. The fifth sub-hole portion 475 has an inner diameter equal to that of the third sub-hole portion 473.

Compared with the prior art, the probe 100 has the advantages that the first spring 31 and the second spring 32 float in two stages, when the plug 10 is just contacted with the board-to-board connector 100, the second spring 32 elastically floats to change the contact of the plug 10 into the first-stage floating contact, after the probe is further corrected, the first spring 31 floats to enable the contact of the plug 10 to realize the second-stage floating, and therefore the reliability of the probe 100 is higher.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.

Claims

1. A probe for testing terminals of a board-to-board connector, comprising: the detector comprises a plug, a flange, a first spring, a second spring, a first fastener and a test core body;

2. The probe of claim 1, wherein: the first platform part is in a round-corner rectangular shape, and four corners of the first platform part are respectively provided with a first concave part with an opening facing the second platform part;

3. The probe of claim 2, wherein: the detector also comprises a second fastening piece, the first platform part is provided with a first screw hole, and the third seat body is provided with a second screw hole corresponding to the first screw hole;

4. A probe according to claim 3, wherein: the first platform part is provided with a third screw hole, and the sealing cover is provided with a fourth screw hole which is arranged corresponding to the third screw hole;

5. The probe of claim 4, wherein: the second platform part is provided with a avoiding hole which is correspondingly arranged with the third screw hole and the fourth screw hole, the aperture of the avoiding hole is larger than that of the third screw hole, and the aperture of the avoiding hole is larger than that of the fourth screw hole.

6. The probe of claim 5, wherein: the third seat body comprises a main body part and an extension part extending forwards from the main body part, and the transverse length of the main body part is greater than that of the extension part;

7. The probe of claim 6, wherein: the third seat body comprises a third cylinder cavity penetrating through the extension part and the main body part, the main body part is provided with a first guide hole and a second guide hole, and the first guide hole and the second guide hole are positioned on different sides of the third cylinder cavity in the transverse direction;

8. The probe of claim 7, wherein: the detector comprises a first screw and a second screw, the first guide pillar is provided with a first pillar hole penetrating along the length direction of the first guide pillar, and the second guide pillar is provided with a second pillar hole penetrating along the length direction of the second guide pillar;

9. The probe of claim 8, wherein: the test core comprises a shell, a probe and a cable connector, wherein the probe comprises a detection part, a middle part and a connecting part, at least part of the detection part is exposed outside the shell, the middle part is positioned inside the shell, and the connecting part is physically and electrically connected with the cable connector;

10. The probe of claim 9, wherein: the shell is a metal piece and comprises a first shell, a second shell and a third shell which are mutually assembled together, wherein the second shell is positioned between the first shell and the third shell;