CN216847881U - Test fixture - Google Patents

Abstract

The utility model discloses a test fixture, it includes anchor clamps body and piece needle module, and the clamp of anchor clamps body is got the end and is equipped with the installation department, and piece needle module includes fixing base, fixed frame and a plurality of piece needle, and a plurality of piece needles are alternately installed in fixed frame side by side, and fixed frame is installed in the fixing base, and the piece needle exposes in the fixing base and stretches to the inside of anchor clamps body, and the fixing base is detachably and installs in the installation department. The utility model discloses a test fixture has compatible high advantage.

Description

Test fixture

Technical Field

The utility model relates to a detect the frock field, especially relate to a test fixture.

Background

In the manufacturing process of electronic component modules such as 3C electronic products (mobile phones, cameras, and notebook computers), it is necessary to perform a conduction test and an operation characteristic test by connecting terminals for connection to a main body substrate provided on the electronic component module and terminals of a test apparatus using probes (probe pins).

In the prior art, the arrangement and the number of the probes serving as the test device are constant, so that the compatibility of the test device is not high, and the test device is generally only suitable for testing one type of product. Moreover, the probe is unprotected during testing, and the probe is easy to bend and damage due to impact and impact.

Therefore, a highly compatible test fixture is needed to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a test fixture that compatibility is high.

In order to achieve the purpose, the utility model discloses a test fixture includes anchor clamps body and piece needle module, the clamp of anchor clamps body is got the end and is equipped with the installation department, piece needle module includes fixing base, fixed frame and a plurality of piece needle, and is a plurality of piece needle be alternately install side by side in fixed frame, fixed frame install in the fixing base, piece needle expose in the fixing base and stretch to the inside of anchor clamps body, the fixing base be detachably install in the installation department.

Preferably, the mounting portion is a first through hole structure communicated with the inside of the clamp body.

Preferably, the fixing frame is provided with a plurality of mounting grooves which are arranged side by side at intervals and used for mounting the sheet needle, the sheet needle is mounted in the mounting grooves, and the sheet needle part positioned in the mounting grooves is of a bending structure.

Preferably, the piece needle module further comprises a floating part, the floating part is movably mounted at the first end of the fixed seat up and down, the piece needle movably penetrates through the floating part, the floating part is pushed and pushed to move close to the fixed seat during testing so as to enable the piece needle to be exposed out of the floating part, and the floating part moves away from the fixed seat after testing so as to enable the floating part to cover the piece needle.

Preferably, a first elastic piece is installed between the fixed seat and the floating piece, and the first elastic piece constantly has a tendency of driving the floating piece to be away from the fixed seat.

Preferably, the fixing seat is provided with a second through hole structure, the fixing frame is sleeved in the second through hole structure, the two ends of the fixing seat are respectively provided with a clamping gap, and the locking piece is clamped in the clamping gap and tightly presses the fixing seat.

Preferably, the clamp body comprises two clamp bodies hinged to each other, the first end of each clamp body forms the clamping end, the second end of each clamp body forms a pressing end, a second elastic piece is installed between the two pressing ends, and the second elastic piece constantly has a tendency of driving the two pressing ends to be away from each other.

Preferably, a pin structure for inserting the PCB is installed on the end face of the second end of the fixing seat, a locking plate is detachably installed on the outer side surface of the clamp body, and the locking plate presses the PCB onto the clamp body.

Preferably, a floating block is mounted on one of the two clamp bodies, the floating block is provided with a positioning notch for clamping a workpiece to be measured, a third elastic piece is mounted between the floating block and the clamp body where the floating block is located, and the third elastic piece constantly has a tendency of driving the floating block to move close to the clamping end of the opposite clamp body.

Preferably, the clamping end of the other of the two clamps protrudes and extends with an alignment protrusion and a limiting protrusion toward the inside of the clamp body, the limiting protrusion extends beyond the alignment protrusion, the limiting protrusion abuts against the clamping end of the clamp body facing opposite directions when the two clamps clamp the workpiece to be measured, and the alignment protrusion abuts against the floating block when the two clamps clamp the workpiece to be measured.

Compared with the prior art, use the utility model discloses a when test fixture tested the work piece that awaits measuring, the clamp was got the end and is pressed from both sides tight work piece that awaits measuring, and the film needle meets with the terminal of the work piece that awaits measuring. When testing the work piece that awaits measuring to the difference, can follow the installation department and take out the fixing base to take out the piece needle module, after changing new piece needle module, enable new piece needle module and adapt to new work piece that awaits measuring, can see out the utility model discloses a test fixture has compatible high advantage.

Drawings

Fig. 1 is a perspective view of the test fixture for testing a workpiece to be tested.

Fig. 2 is a perspective view of the test fixture shown in fig. 1 with a locking plate separated from the fixture body.

Fig. 3 is a perspective view of the test fixture shown in fig. 2 when the workpiece to be tested is hidden and the sheet pin module is further separated from the fixture body.

FIG. 4 is an exploded perspective view of the hidden clip body with the locking plate hidden and the staple module hidden.

Fig. 5 is a perspective view of the disassembled sheet pin module, the second elastic member, the pin shaft and the workpiece to be tested in fig. 4 after being further hidden.

Fig. 6 is a perspective view of the locking plate, the needle unit, and the slider of fig. 5 separated from the clip body.

Fig. 7 is a perspective view of the fixing frame and the sheet pin installed therein.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

As shown in fig. 1 to 6, the test fixture 100 of the present invention includes a fixture body 10 and a needle module 20. The end of pressing from both sides of anchor clamps body 10 is equipped with installation department 11, and piece needle module 20 includes fixing base 21, fixed frame 22 and a plurality of piece needle 23, and a plurality of piece needles 23 are alternately and arrange the ground and install in fixed frame 22, and fixed frame 22 installs in fixing base 21, and piece needle 23 exposes in fixing base 21 and stretches to the inside of anchor clamps body 10, and fixing base 21 is detachably and installs in installation department 11. Use the utility model discloses a when test fixture 100 tests workpiece 200 that awaits measuring, press from both sides and get the end and press from both sides tight workpiece 200 that awaits measuring, the terminal of piece needle 23 and workpiece 200 that awaits measuring meets. When testing different work piece 200 that awaits measuring, can follow installation department 11 and take out fixing base 21 to take out piece needle module 20, after changing new piece needle module, enable new piece needle module adaptation new work piece 200 that awaits measuring, can see out the utility model discloses a test fixture 100 has compatible high advantage. Preferably, test fixture 100 is in the form of a clip, but is not limited to such. For example, the mounting portion 11 is a first through hole structure communicating with the interior of the fixture body 10, so as to facilitate the assembly and disassembly of the sheet pin module 20.

As shown in fig. 1 to 7, the patch needle module 20 further includes a floating member 24. The floating piece 24 is movably mounted at the first end of the fixed seat 21 up and down, the sheet needle 23 movably penetrates through the floating piece 24, and the floating piece 24 is pushed to move close to the fixed seat 21 during testing so that the sheet needle 23 is exposed out of the floating piece 24. The floating member 24 is moved away from the fixed seat 21 after the test so that the floating member 24 covers the sheet pin 23. The floating piece 24 plays a role of protecting the sheet needle 23 and avoids bending and damage caused by frequent impact. Preferably, a first elastic member 25 is installed between the fixed seat 21 and the floating member 24, and the first elastic member 25 always has a tendency of driving the floating member 24 away from the fixed seat 21, so that the floating member 24 automatically moves away from the fixed seat 21. For example, the first elastic member 25 is a spring, but is not limited thereto.

The fixing seat 21 is provided with a second through hole structure 211, the fixing frame 22 is sleeved in the second through hole structure 211, two ends of the fixing seat 21 are respectively provided with a clamping notch 212, and the locking piece 30 is clamped in the clamping notch 212 and tightly presses the fixing seat 21. The second through hole structure 211 is provided to facilitate the installation of the fixing frame 22 into the fixing base 21. Preferably, the fixing frame 22 is provided with a plurality of mounting grooves 221 arranged side by side at intervals for mounting the sheet needle 23, the sheet needle 23 is mounted in the mounting grooves 221, and the portion of the sheet needle 23 located in the mounting grooves 221 is of a bent structure. The sheet needle 23 has a bending structure in part, so that the sheet needle 23 has elasticity, can be abutted against the terminal of the workpiece 200 to be tested, and can improve the test adaptability and the contact effectiveness of the sheet needle 23. Furthermore, a plurality of penetrating through holes (not marked) which are arranged side by side at intervals and used for allowing the sheet needle 23 to penetrate are formed in the floating piece 24, and the penetrating through holes and the mounting grooves 221 are arranged in a one-to-one opposite mode. Specifically, the locking member 30 is a screw, but is not limited thereto, and the screw is screwed to the clip body 12 described below.

As shown in fig. 1 to 6, the clamp body 10 includes two clamp bodies 12 hinged to each other. The first end of the clamp body 12 forms a clamping end, the second end of the clamp body 12 forms a pressing end, a second elastic part 13 is installed between the two pressing ends, the second elastic part 13 constantly has a tendency of driving the two pressing ends to be away from each other, so that the two clamping ends constantly have a tendency of being close to each other, and the sheet needle 23 is tightly contacted with the terminal of the workpiece 200 to be measured. For example, the second elastic element 13 is a spring, but is not limited thereto. Preferably, the clamping ends of the two clamping bodies 12 are respectively provided with a positioning groove 121, and the two positioning grooves 121 are arranged oppositely. The positioning groove 121 can provide positioning for the workpiece 200 to be tested, and prevent the workpiece 200 to be tested from shifting during clamping or testing. Specifically, the two clamp bodies 12 are hinged together by a pin 122, but not limited thereto, and the end of the pin 122 is locked by a snap spring, but not limited thereto.

As shown in fig. 1 to 6, a pin structure 26 for inserting a PCB (not shown) is installed on an end surface of the second end of the fixing base 21, and a locking plate 14 is detachably installed on an outer side surface of the clip body 12, and the locking plate 14 presses the PCB to the clip body 12. The PCB is electrically connected to the sheet pin 23, and the PCB can be written with a detection program, and different PCBs are mounted according to different detection workpieces to perform corresponding detection, but not limited thereto. After the locking plate 14 presses the PCB, the PCB is stably mounted to the clip body 12. Preferably, the locking plate 14 is locked to the clip body 12 by screws to facilitate the removal of the locking plate 14. One of the two clamp bodies 12 is provided with a floating block 15, the floating block 15 is provided with a positioning notch 151 for clamping the workpiece 200 to be measured, a third elastic piece 16 is arranged between the floating block 15 and the clamp body 12, and the third elastic piece 16 always has the tendency of driving the floating block 15 to move close to the clamping end of the opposite clamp body 12. The floating block 15 is arranged to tightly push against the workpiece 200 to be tested, so that the workpiece 200 to be tested can be limited at a fixed position during testing. The positioning notch 151 communicates with the positioning groove 121, but is not limited thereto. For example, the third elastic element 16 is a spring, but is not limited thereto. The clamping end of the other of the two clamp bodies 12 protrudes towards the interior of the clamp body 10 to form a positioning protrusion 17 and a limiting protrusion 18. The limiting bulge 18 goes beyond the aligning bulge 17, the limiting bulge 18 abuts against the clamping end of the opposite clamp body 12 when the two clamp bodies 12 clamp the workpiece 200 to be measured, and the aligning bulge 17 abuts against the floating block 15 when the two clamp bodies 12 clamp the workpiece 200 to be measured. The limiting bulge 18 is arranged to prevent the two clamping ends from being too close to each other to enable the two needle modules 20 to impact each other, and after the alignment bulge 17 is arranged to abut against and be in press fit with the floating block 15, the workpiece 200 to be measured is prevented from being crushed and damaged.

The following is simple the utility model discloses a method for using of test fixture 100: during testing, the pressing ends of the two clamp bodies 12 are pressed down to enable the two clamping ends to be far away from each other and open, the workpiece 200 to be tested is placed into the two clamping ends, the two pressing ends are loosened, the workpiece 200 to be tested is clamped by the two clamping ends under the action of the second elastic piece 13, the floating block 15 props against the workpiece 200 to be tested, the floating piece 24 is pushed by the workpiece 200 to be tested to slide close to the fixed seat 21, the sheet pin 23 is exposed, the exposed sheet pin 23 is in contact with the terminal of the workpiece 200 to be tested, and then the workpiece 200 to be tested can be tested.

The above disclosure is only a preferred embodiment of the present invention, and the scope of the claims of the present invention should not be limited thereby, and all the equivalent changes made in the claims of the present invention are intended to be covered by the present invention.

Claims (10)

1. A test fixture is characterized in that: including anchor clamps body and piece needle module, the clamp of anchor clamps body is got the end and is equipped with the installation department, piece needle module includes fixing base, fixed frame and a plurality of piece needle, and is a plurality of piece needle be alternately install side by side in fixed frame, fixed frame install in the fixing base, piece needle expose in the fixing base and stretch to the inside of anchor clamps body, the fixing base be detachably install in the installation department.

2. The test fixture of claim 1, wherein the mounting portion is a first through-hole structure in communication with an interior of the fixture body.

3. The test fixture as claimed in claim 1, wherein the fixing frame defines a plurality of mounting slots for mounting the pins, the mounting slots being spaced apart from each other and arranged side by side, the pins being mounted in the mounting slots, and the pin portions of the mounting slots being bent.

4. The test fixture of claim 1, wherein the wafer pin module further comprises a floating member, the floating member is movably mounted at the first end of the fixing base up and down, the wafer pin movably penetrates through the floating member, the floating member is pushed to move close to the fixing base during testing so that the wafer pin is exposed out of the floating member, and the floating member moves away from the fixing base after testing so that the floating member covers the wafer pin.

5. The test fixture of claim 4, wherein a first resilient member is mounted between the anchor seat and the floating member, the first resilient member having a constant tendency to urge the floating member away from the anchor seat.

6. The test fixture of claim 1, wherein the fixing base is provided with a second through hole structure, the fixing frame is sleeved in the second through hole structure, two ends of the fixing base are respectively provided with a clamping notch, and a locking piece is clamped in the clamping notch and tightly presses the fixing base.

7. The test fixture of claim 1, wherein the fixture body comprises two hinged clamp bodies, the first end of the clamp body forms the clamping end, the second end of the clamp body forms a pressing end, a second elastic member is installed between the two pressing ends, and the second elastic member constantly has a tendency to drive the two pressing ends away from each other.

8. The test fixture of claim 7, wherein a pin structure for inserting the PCB is installed on an end face of the second end of the fixing seat, and a locking plate is detachably installed on an outer side surface of the clamp body and presses the PCB against the clamp body.

9. The test fixture of claim 7, wherein a floating block is mounted on one of the two clamp bodies, the floating block is provided with a positioning notch for clamping a workpiece to be tested, a third elastic member is mounted between the floating block and the clamp body, and the third elastic member constantly has a tendency of driving the floating block to move close to the clamping end of the opposite clamp body.

10. The test fixture of claim 9, wherein the clamping end of the other of the two clamping bodies protrudes toward the interior of the fixture body with an alignment protrusion and a limiting protrusion, the limiting protrusion extends beyond the alignment protrusion, the limiting protrusion abuts against the clamping end of the opposite clamping body when the two clamping bodies clamp the workpiece to be tested, and the alignment protrusion abuts against the floating block when the two clamping bodies clamp the workpiece to be tested.

Images