CN217034023U

CN217034023U - Elastic floating microneedle testing mechanism with three-layer structure

Info

Publication number: CN217034023U
Application number: CN202123305928.5U
Authority: CN
Inventors: 戴子维; 陈斯奋
Original assignee: Guangdong Yisichuang Intelligent Technology Co ltd
Current assignee: Guangdong Yisichuang Intelligent Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-22
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses an elastic floating microneedle testing mechanism with a three-layer structure, which comprises a floating fixing frame, a middle movable plate, a PCB (printed circuit board), a needle block fixing plate, a small needle block and a miniature probe, wherein the floating fixing frame is positioned on the upper end surface of the middle movable plate, the floating fixing frame is connected with the middle movable plate through first equal-height screws, the PCB is positioned between the middle movable plate and the needle block fixing plate, the needle block fixing plate is connected with the middle movable plate through second equal-height screws, an installation groove is formed in one end surface of the needle block fixing plate, which is far away from the PCB, a probe fixing boss is arranged in the installation groove, the small needle block is arranged in the installation groove, the miniature probe is arranged on the probe fixing boss, one end of the miniature probe penetrates through the needle block fixing plate and then is electrically connected with the PCB, and the other end of the miniature probe is spliced with the small needle block. The connector testing device has the advantages of simple structure, reasonable and novel design, convenience for testing the connector and high testing precision.

Description

Elastic floating microneedle testing mechanism with three-layer structure

Technical Field

The utility model relates to the technical field of connector testing, in particular to an elastic floating microneedle testing mechanism with a three-layer structure.

Background

The demand of electronic products is increased day by day, the products are updated rapidly, and the increase of functional demand causes the problems of difficult test and easy product crushing caused by the irregular new addition and distribution of product components. At present, the connection mode between the PCB boards is mostly the board-to-board connector connection, so the requirement of newly adding the function of the test connector further increases the test difficulty. Therefore, the applicant designs an elastic floating microneedle testing mechanism with a three-layer structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a three-layer structure elastic floating microneedle testing mechanism which has the advantages of simple structure, reasonable and novel design, convenience in connector testing and high testing precision, and solves the technical problems of function requirements of newly added testing connectors and increased testing difficulty.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a three layer construction elasticity microneedle accredited testing organization that floats, is including unsteady mount, middle fly leaf, PCB board, needle piece fixed plate, little needle piece and miniature probe, unsteady mount is located the up end of middle fly leaf, and floats between mount and the middle fly leaf through equal high screwed connection such as first, the PCB board is located between middle fly leaf and the needle piece fixed plate, through equal high screwed connection such as second between needle piece fixed plate and the middle fly leaf, and needle piece fixed plate keeps away from a terminal surface of PCB board and has seted up the mounting groove, is provided with the fixed boss of probe in this mounting groove, little needle piece is installed in the mounting groove, miniature probe is installed on the fixed boss of probe, and miniature probe's one end runs through behind the needle piece fixed plate and is connected with PCB board electricity, and the other end is pegged graft with little needle piece.

Preferably, the floating fixing frame is provided with mounting screw holes, four first-layer springs are arranged between the floating fixing frame and the middle movable plate, and the four first-layer springs are distributed between the floating fixing frame and the middle movable plate at intervals.

Preferably, a second layer of springs is arranged between the middle movable plate and the needle block fixing plate, the number of the second layer of springs is four, and the four second layer of springs are symmetrically distributed on the central axis of the PCB.

Preferably, a slot for installing the PCB is formed in one end face of the PCB on the needle block fixing plate, and the depth value of the slot is the same as the thickness value of the PCB.

Preferably, the small needle block comprises a base and a jig boss integrally formed with the base, sinking flanges are arranged on two sides of the base and are in limited connection with the needle block fixing plate through limiting screws, positioning bosses are arranged on the jig boss, positioning edges are arranged on one sides of the positioning bosses, and avoiding grooves are formed in two sides of the jig boss on the base.

Preferably, the positioning boss is chamfered, the chamfer is 0.2mm, and the size value of the positioning edge is slightly larger than that of the detected connector.

Preferably, a third layer of spring installation position is arranged on the installation groove, a third layer of spring is installed in the third layer of spring installation position, and one end, far away from the third layer of spring installation position, of the third layer of spring is in contact connection with the small needle block.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model provides a three-layer elastic floating microneedle testing mechanism which comprises a floating fixing frame, a middle movable plate, a PCB (printed Circuit Board), a needle block fixing plate, a small needle block and a microprobe, wherein the whole structure is simple, the design is reasonable and novel, a first layer of spring is arranged between the floating fixing frame and the middle movable plate, a second layer of spring is arranged between the middle movable plate and the needle block fixing plate, a third layer of spring mounting position is arranged in a mounting groove of the needle block fixing plate, a third layer of spring is arranged in the third layer of spring mounting position, when the three-layer elastic floating microneedle testing mechanism works, the small needle block is directly aligned with a connector to be detected, the second layer of spring is firstly compressed at the moment to ensure that the small needle block is completely aligned with the connector to be detected, after the small needle block is guided, the third layer of spring is compressed, the microprobe at the moment extends out of the small needle block and is contacted with a testing point of the connector to be detected on the small needle block, and the detection is completed, the first layer of spring is an overpressure spring, and the floating fixing frame is prevented from damaging the detected connector in the pressing process.

2. The small needle block comprises a base and a jig boss integrally formed with the base, two sides of the jig boss on the base are provided with the avoidance grooves, the jig boss is provided with the positioning boss, one side of the positioning boss is provided with the positioning edge, the positioning boss plays a role in guiding and primary positioning, the chamfer angle of the positioning boss is 0.2mm, good guiding is achieved, meanwhile, the product to be detected can be effectively prevented from being crushed, and the practicability is high.

3. According to the utility model, the sinking rims are arranged on the two sides of the base of the small needle block and are in limit connection with the needle block fixing plate through the limit screws, the micro probe cannot extend out of the surface of the small needle block under the spring force action of the third layer of spring, and when the third layer of spring is compressed, the micro probe can extend out of the needle hole of the small needle block, so that the functions of protecting the micro probe and reducing the pollution of the micro probe are achieved.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is one of the structural diagrams of the present invention;

FIG. 3 is a second block diagram of the present invention;

FIG. 4 is a view showing the construction of the needle block fixing plate of the present invention;

fig. 5 is a structural view of a small needle block of the present invention.

The reference numbers and designations in the drawings are as follows:

1. a floating fixing frame; 2. a middle movable plate; 3. a PCB board; 4. a needle block fixing plate; 5. a small needle block; 51. a base; 52. a jig boss; 53. sinking the edge; 54. positioning the edge; 55. a position avoiding groove; 56. positioning the boss; 6. a microprobe; 7. a first equal-height screw; 8. second equal-height screw; 9. mounting grooves; 10. fixing a boss by using a probe; 11. installing a screw hole; 12. a first layer of springs; 13. a second layer of springs; 14. a slot position; 15. a limiting screw; 16. a third layer of spring mounting positions; 17. and a third layer of springs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the utility model. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1 to 4, an embodiment of the present invention includes: a three-layer elastic floating microneedle testing mechanism comprises a floating fixing frame 1, a middle movable plate 2, a PCB (printed circuit board) 3, a needle block fixing plate 4, a small needle block 5 and a miniature probe 6, wherein the floating fixing frame 1 is positioned on the upper end face of the middle movable plate 2, the floating fixing frame 1 is connected with the middle movable plate 2 through a first equal-height screw 7, a mounting screw hole 11 is formed in the floating fixing frame 1, four first layer springs 12 are arranged between the floating fixing frame 1 and the middle movable plate 2, the four first layer springs 12 are distributed between the floating fixing frame 1 and the middle movable plate 2 at intervals, the PCB 3 is positioned between the middle movable plate 2 and the needle block fixing plate 4, a second layer spring 13 is arranged between the middle movable plate 2 and the needle block fixing plate 4, the second layer springs 13 are four, and the four second layer springs 13 are symmetrically distributed on the central axis of the PCB 3, the needle block fixing plate 4 is connected with the middle movable plate 2 through a second equal-height screw 8, a mounting groove 9 is formed in one end face, away from the PCB, of the needle block fixing plate 4, a probe fixing boss 10 is arranged in the mounting groove 9, the small needle block 5 is mounted in the mounting groove 9, a third layer of spring mounting position 16 is formed in the mounting groove 9, a third layer of spring 17 is mounted in the third layer of spring mounting position 16, one end, away from the third layer of spring mounting position 16, of the third layer of spring 17 is in contact connection with the small needle block 5, the micro probe 6 is mounted on the probe fixing boss 10, one end of the micro probe 6 penetrates through the needle block fixing plate 4 and then is electrically connected with the PCB 3, and the other end of the micro probe is connected with the small needle block 5 in an inserting mode.

Specifically, a slot 14 for installing the PCB 3 is formed in one end face of the PCB 3 on the pin block fixing plate 4, the depth value of the slot 14 is the same as the thickness value of the PCB 3, and the PCB 3 is installed in the slot 14 and fixed by a pin.

Referring to fig. 5, the small needle block 5 in the figure includes a base 51 and a jig boss 52 formed integrally with the base 51, wherein sinking flanges 53 are provided on two sides of the base 51, the sinking flanges 53 are connected to the needle block fixing plate 4 by limiting screws 15, due to the spring force of the third layer of spring 17, the micro probe 6 does not extend out of the surface of the small needle block 5, when the third layer of spring 17 is compressed, the micro probe 6 can extend out of the needle hole of the small needle block 5 to protect the micro probe 6 and reduce the contamination of the micro probe 6, the jig boss 52 is provided with a positioning boss 56, one side of the positioning boss 56 is provided with a positioning edge 54, and two sides of the base 51 on the jig boss 52 are provided with avoiding grooves 55.

Specifically, location boss 56 removes the chamfer setting, and this chamfer is 0.2mm, and location boss 56 has good direction simultaneously, can also effectually avoid weighing wounded the product that is detected, and the practicality is strong, the size value of location limit 54 slightly is greater than the size value that is detected the connector, is convenient for like this to be detected the product and puts into tool boss 52 on, improves and detects the precision.

It should be noted that, needle block fixed plate 4 and little needle block 5 are preferably made of special material in this embodiment, this material is workable, can not produce static and damage the product that awaits measuring, influence test accuracy etc. when contacting with electronic product, it should also be noted that, in this embodiment, the elasticity value of third layer spring 17 is less than the elasticity value of first layer spring 12, and is greater than the elasticity value of second layer spring 13, and testing mechanism is being pushed down in-process like this, and second layer spring 13 is compressed earlier, and later third layer spring 17 and first layer spring 12 are compressed in proper order.

When the testing mechanism detects the connector, firstly, the floating fixing frame 1 is fixed on a pressing machine table (not shown) and is fixed through the mounting screw hole 11, then the connector to be tested is fixed on a corresponding fixture, the pressing machine table drives the testing mechanism to press downwards, the small needle block 5 firstly contacts the connector to be tested when the testing mechanism presses downwards, at the moment, when the testing mechanism continues to press downwards, the second layer of springs 13 are firstly compressed, the relative positions of the small needle block 5 to the connector to be tested are guided, then the third layer of springs 17 start to be compressed, the micro probes 6 extend out from the needle holes of the small needle block 5, the connector to be tested starts to be tested, and finally, the first layer of springs are compressed by 12 times, so that the pressing machine table is prevented from being over-pressed to damage the connector to be tested.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a three layer construction elasticity microneedle accredited testing organization that floats which characterized in that: the probe fixing device comprises a floating fixing frame (1), a middle movable plate (2), a PCB (3), a needle block fixing plate (4), a small needle block (5) and a micro probe (6), wherein the floating fixing frame (1) is positioned on the upper end face of the middle movable plate (2), the floating fixing frame (1) is connected with the middle movable plate (2) through first equal-height screws (7), the PCB (3) is positioned between the middle movable plate (2) and the needle block fixing plate (4), the needle block fixing plate (4) is connected with the middle movable plate (2) through second equal-height screws (8), an installation groove (9) is formed in one end face, far away from the PCB (3), of the needle block fixing plate (4), a probe fixing boss (10) is arranged in the installation groove (9), the small needle block (5) is installed in the installation groove (9), the micro probe (6) is installed on the probe fixing boss (10), and one end of the micro probe (6) penetrates through the needle block fixing plate (4) and then is electrically connected with the PCB (3), and the other end of the micro probe is spliced with the small needle block (5).

2. The three-layer elastic floating microneedle test mechanism of claim 1, wherein: the floating fixing frame (1) is provided with mounting screw holes (11), four first-layer springs (12) are arranged between the floating fixing frame (1) and the middle movable plate (2), and the first-layer springs (12) are distributed between the floating fixing frame (1) and the middle movable plate (2) at intervals.

3. The elastic floating microneedle testing mechanism of claim 1, wherein: be provided with second layer spring (13) between middle fly leaf (2) and needle piece fixed plate (4), second layer spring (13) are provided with four, four second layer spring (13) are with the axis symmetric distribution of PCB board (3).

4. The elastic floating microneedle testing mechanism of claim 1, wherein: a groove (14) for installing the PCB (3) is formed in one end face, located on the PCB, of the pin block fixing plate (4), and the depth value of the groove (14) is identical to the thickness value of the PCB (3).

5. The elastic floating microneedle testing mechanism of claim 1, wherein: little needle piece (5) including base (51) and with base (51) integrated into one piece's tool boss (52), the both sides of base (51) are provided with down edgewise (53), it is spacing with needle piece fixed plate (4) to be connected through spacing screw (15) to sink edgewise (53), be provided with location boss (56) on tool boss (52), be provided with location limit (54) in one side of location boss (56), the both sides that lie in tool boss (52) on base (51) are provided with and keep away a groove (55).

6. The elastic floating microneedle test mechanism of claim 5, wherein: the positioning boss (56) is chamfered, the chamfer is 0.2mm, and the size value of the positioning edge (54) is slightly larger than that of the detected connector.

7. The elastic floating microneedle testing mechanism of claim 1, wherein: the needle is characterized in that a third layer of spring mounting position (16) is formed in the mounting groove (9), a third layer of spring (17) is mounted in the third layer of spring mounting position (16), and one end, far away from the third layer of spring mounting position (16), of the third layer of spring (17) is in contact connection with the small needle block (5).