CN219831298U

CN219831298U - FCT test fixture

Info

Publication number: CN219831298U
Application number: CN202320526161.9U
Authority: CN
Inventors: 张君军; 张伟; 王益平
Original assignee: Suzhou Pinjia Electronic Technology Co ltd
Current assignee: Suzhou Pinjia Electronic Technology Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-10-13
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses an FCT (flexible circuit board) testing tool which comprises a tool box, a panel connected with the tool box in a hinge mode, a first gas spring, a needle plate, a plurality of testing probes and a placing mechanism, wherein the first gas spring is connected with the panel and the tool box at two ends of the first gas spring respectively, the needle plate is arranged on the lower end face of the panel, and the testing probes are arranged on the needle plate. The needle plate lifting mechanism is characterized by further comprising a lifting mechanism arranged below the panel and used for driving the needle plate to lift, the panel is provided with an opening, the placing mechanism comprises a lower frame and an upper frame which are identical in structure, a hinge plate for connecting the upper frame and the lower frame, a second gas spring for driving the upper frame to open and close relative to the lower frame, a carrier plate fixedly arranged on the needle plate and located in the lower frame and a cover plate fixedly arranged on the upper frame, and an elastic clamping handle, wherein the carrier plate is provided with a through hole for a probe to pass through, and the elastic clamping handle is used for sealing the upper frame and the lower frame. The advantages are that: the maintenance is more convenient, the security when reinforcing the test.

Description

FCT test fixture

Technical Field

The utility model relates to the field of TCT test equipment, in particular to an FCT test fixture.

Background

FCT (collectively referred to as functional circuit test) refers to a test method for providing a simulated running environment (stimulus or load) to a test target board (UUT) to make it work in various design states, thereby obtaining parameters of the respective states to verify the function of the UUT. In short, it is the UUT that is loaded with the appropriate stimulus to measure whether the output response is satisfactory. Typically referred to exclusively as functional testing of the PCB.

For example, chinese patent publication No. CN108872829B discloses an FCT test fixture, which includes a fixture box, a press assembly and a buffer control assembly. The tool box comprises a box body and a box cover, the pressing assembly comprises two pressing plates, two transmission rods, two guide plates and a handle, a cross rod is fixedly connected between the two pressing plates, a transmission rod connecting shaft is fixedly connected to one side of the transmission rods, micro-motion rollers, arc-shaped grooves and transmission rollers are arranged on the other side of the transmission rods, the guide plates are fixedly connected with the box cover, guide structures are arranged on the guide plates, the micro-motion rollers, the transmission rollers, the pressing guide grooves and the linear guide grooves are identical to the arc-shaped grooved wheel profile structure, the handle comprises a left support, a right support and a holding rod, the buffer control assembly comprises a buffer cylinder, a micro-motion switch and a buffer valve, the micro-motion rollers are designed and combined with the parallelogram structure, the handle controls the pressing plates to be lifted, and then the buffer structure can slowly move in a vertical mode in the pressing process, so that the whole pressing structure has the technological effect of zero loss of products. Above-mentioned FCT test fixture can improve the test accuracy to the product, but the design of lid still has the defect, has personnel's mistake when the operation and touches the problem to when overhauling or changing the probe, can not carry out flexible removal to the board of installation probe, inconvenient and maintenance.

In view of this, it is necessary to provide an FCT test fixture.

Disclosure of Invention

The FCT testing tool provided by the utility model effectively solves the problems that the existing testing tool is inconvenient to overhaul and has low safety.

The technical scheme adopted by the utility model is as follows: the utility model provides a FCT test fixture, includes the frock case, with frock case hinge connection's panel, both ends respectively with a panel and frock case be connected gas spring, set up the faller of terminal surface under the panel, set up a plurality of test probes and the placing mechanism on the faller. The needle plate lifting mechanism is characterized by further comprising a lifting mechanism arranged below the panel and used for driving the needle plate to lift, the panel is provided with an opening, the placing mechanism comprises a lower frame and an upper frame which are identical in structure, a hinge plate for connecting the upper frame and the lower frame, a second gas spring for driving the upper frame to open and close relative to the lower frame, a carrier plate fixedly arranged on the needle plate and located in the lower frame and a cover plate fixedly arranged on the upper frame, and an elastic clamping handle, wherein the carrier plate is provided with a through hole for a probe to pass through, and the elastic clamping handle is used for sealing the upper frame and the lower frame.

Further is: the lifting mechanism comprises a plurality of lifting assemblies with the same structure, each lifting assembly comprises a cylinder and a first connecting shaft, two ends of the first connecting shaft are respectively fixedly connected with the lower end face of the cylinder body and the lower end face of the panel of the cylinder, a vertical hole which is slidably connected with the first connecting shaft is formed in the needle plate, and the output end of the cylinder is fixedly connected with the lower end face of the needle plate.

Further is: the elastic clamping handles comprise mounting bars fixedly arranged on an upper frame, at least two fixing bars fixedly arranged on the mounting bars, connecting rods for connecting a plurality of fixing bars, bearing type haulers arranged on the fixing bars in a sliding mode, hooks arranged on the fixing bars in a sliding mode, and a first spring sleeved on the fixing bars, wherein two ends of the first spring are respectively propped against the connecting rods and the bearing type haulers, the hooks are arranged between the bearing type haulers and the mounting bars, and grooves clamped with the hooks are formed in the lower frame.

Further is: the PCB positioning device is characterized in that a placing groove for placing the PCB is formed in the carrier plate, and positioning inclined tables are arranged around the placing groove.

Further is: the guide posts are fixedly arranged on the panel, the linear bearings corresponding to the guide posts are arranged on the needle plate, the guide posts are sleeved in the linear bearings, a plurality of positioning pins are arranged on the upper end face of the needle plate, and positioning holes corresponding to the positioning pins one by one are formed in the carrier plate.

The utility model has the beneficial effects that: the lifting mechanism is designed and the concrete implementation mode can enable the needle plate to be overhauled more conveniently, the PCB can be isolated from the external environment when being tested by the design and the concrete implementation mode of the placement mechanism, operators are prevented from touching the PCB by mistake when being carried, and the safety when being tested is enhanced.

Drawings

Fig. 1 is an overall schematic diagram of an FCT test tool provided by an embodiment of the present utility model.

Fig. 2 is a schematic diagram of an FCT test fixture removal tooling box according to an embodiment of the present utility model.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is an enlarged schematic view of the region B in fig. 3.

Fig. 5 is a schematic diagram of an FCT test fixture removal tooling box according to an embodiment of the present utility model.

Fig. 6 is an enlarged schematic view of the area a in fig. 5.

Fig. 7 is a schematic diagram of an elastic clamping handle of an FCT test tool according to an embodiment of the present utility model.

Marked in the figure as: 1. a construction box; 2. a panel; 3. a first air spring; 4. a needle plate; 5. a test probe; 6. a placement mechanism; 7. a lifting mechanism; 61. an upper frame; 62. a lower frame; 63. a second gas spring; 64. a carrier plate; 65. a cover plate; 66. an elastic clamping handle; 71. a cylinder; 72. a first connecting shaft; 661. a mounting bar; 662. a fixed rod; 663. a connecting rod; 664. a bearing type drag link; 665. a hook; 666. a first spring; 641. a placement groove; 642. positioning an inclined table; 8. a guide post; 9. a linear bearing; 10. and (5) positioning pins.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

As shown in fig. 1, 2, 3 and 5, the FCT test fixture provided by the embodiment of the utility model comprises a fixture box 1, a panel 2 connected with the fixture box 1 in a hinge manner, a first gas spring 3 with two ends respectively connected with the panel 2 and the fixture box 1, a needle plate 4 arranged on the lower end surface of the panel 2, a plurality of test probes 5 arranged on the needle plate 4 and a placement mechanism 6. The needle plate lifting mechanism comprises a lifting mechanism 7 arranged below the panel 2 and used for driving the needle plate 4 to lift, the panel 2 is provided with an opening, the placing mechanism 6 comprises a lower frame 62 and an upper frame 61 which are identical in structure, a hinge plate for connecting the upper frame 61 and the lower frame 62, a second gas spring 63 for driving the upper frame 61 to open and close relative to the lower frame 62, a carrier plate 64 fixedly arranged on the needle plate 4 and positioned in the lower frame 62 and passing through the opening, a cover plate 65 fixedly arranged on the upper frame 61 and an elastic clamping handle 66, the carrier plate 64 is provided with a through hole for a probe to pass through, and the elastic clamping handle 66 is used for sealing the upper frame 61 and the lower frame 62.

In actual use, the first gas spring 3 drives the panel 2 to a horizontal position, the second gas spring 63 drives the upper frame 61 to an open state along the hinge plate, then the PCB to be tested is placed on the carrier plate 64, then the second gas spring 63 closes the upper frame 61, and after closing, the upper frame 61 and the lower frame 62 are clamped by the elastic clamping handle 66. The PCB is then tested by probes. When the probes and the needle plate 4 need to be overhauled, the first gas spring 3 drives the panel 2 to be opened, and then the lifting mechanism 7 drives the needle plate 4 to move along the vertical direction of the end face of the needle plate 4.

Among the above-mentioned designs, elevating system 7's design and concrete implementation can make the maintenance of faller 4 more convenient, and the design and the concrete implementation of placing mechanism 6 can make PCB keep apart with external environment when the test, prevent that operating personnel from touching the PCB board by mistake when carrying, the security when reinforcing the test.

Specifically: as shown in fig. 5 and 6, the lifting mechanism 7 includes a plurality of lifting assemblies with the same structure, each lifting assembly includes an air cylinder 71 and a first connecting shaft 72 with two ends fixedly connected with the cylinder body of the air cylinder 71 and the lower end surface of the panel 2, and the needle plate 4 is provided with a vertical hole slidingly connected with the first connecting shaft 72. The output end of the cylinder 71 is fixedly connected with the lower end surface of the needle plate 4.

In actual use, when the needle plate 4 needs to be overhauled, the air cylinder 71 drives the needle plate 4 to slide along the first connecting shaft 72.

In the above design, the lifting mechanism 7 is compact in structure, can effectively enable the needle plate 4 to rapidly move, and ensures that the needle plate 4 is fixed when the needle plate 4 does not need to be overhauled.

Specifically: as shown in fig. 1, 2 and 7, the number of the elastic clamping handles 66 is at least one, the elastic clamping handles 66 comprise a mounting bar 661 fixedly arranged on the upper frame 61, at least two fixing bars 662 fixedly arranged on the mounting bar 661, a connecting rod 663 connected with a plurality of fixing bars 662, a bearing type drag bar 664 slidably arranged on the fixing bars 662, a hook 665 slidably arranged on the fixing bars 662, and a number one spring 666 sleeved on the fixing bars 662, two ends of the number one spring 666 are respectively propped against the connecting rod 663 and the bearing type drag bar 664, the hook 665 is arranged between the bearing type drag bar 664 and the mounting bar 661, and a groove clamped with the hook 665 is formed in the lower frame 62.

In actual use, when the upper frame 61 is turned over towards the lower frame 62 under the driving of the second air spring 63, the handle is held by hand to enable the hook 665 to move towards the connecting rod 663 along the fixing rod 662, so that the first air spring 666 is compressed, and when the upper frame 61 and the lower frame 62 are overlapped, the handle is released, so that the bearing type drag rod 664 and the hook 665 are driven by the elastic acting force of the first air spring 666 to drive the hook 665 to move towards the groove, and finally the adapting and clamping of the hook 665 and the groove are completed.

In the above design, the elastic clamping handle 66 has a structure design that facilitates the clamping of the upper frame 61 and the lower frame 62, and enhances the safety in the testing process.

Specifically: as shown in fig. 4, the carrier plate 64 is provided with a placement groove 641 for placing a PCB, and positioning ramps 642 are provided around the placement groove 641.

In actual use, by placing the PCB in the placement groove 641, the corners of the PCB may gradually slide into the placement groove 641 along the inclined surface of the positioning ramp 642 during placement.

In the design, the PCB can be placed more accurately and conveniently.

Specifically: as shown in fig. 5 and 6, the panel 2 is fixedly provided with a guide post 8, the needle plate 4 is provided with a linear bearing 9 corresponding to the guide post 8, the guide post 8 is sleeved in the linear bearing 9, the upper end surface of the needle plate 4 is provided with a plurality of positioning pins 10, and the carrier plate 64 is provided with positioning holes corresponding to the positioning pins 10 one by one.

In the above design, through the sliding fit of guide post 8 and linear bearing 9 for the in-process position that faller 4 overhauld can not appear the deviation, through the cooperation of locating hole and locating pin 10, can be convenient for the change of carrier plate 64.

It should be understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a FCT test fixture, includes frock case (1), panel (2) with frock case (1) hinge connection, both ends respectively with a gas spring (3) that panel (2) and frock case (1) are connected, set up faller (4) at terminal surface under panel (2), set up a plurality of test probes (5) and placing mechanism (6) on faller (4), its characterized in that: still including setting up elevating system (7) that are used for driving faller (4) to go up and down below panel (2), panel (2) are provided with the opening, place mechanism (6) including the same lower frame (62) of structure and last frame (61), connect the hinge board of frame (61) and lower frame (62), the relative lower frame (62) of frame (61) open and shut No. two gas spring (63) of drive, pass opening fixed setting is on faller (4) and be located carrier plate (64) of frame (62), cover plate (65) and elasticity block handle (66) of fixed setting on frame (61), carrier plate (64) are provided with the through-hole that is used for the probe to pass, elasticity block handle (66) are used for closing cap frame (61) and lower frame (62).

2. The FCT test tool of claim 1, wherein: the lifting mechanism (7) comprises a plurality of lifting assemblies with the same structure, each lifting assembly comprises a cylinder (71) and a first connecting shaft (72) with two ends fixedly connected with the cylinder body of the cylinder (71) and the lower end face of the panel (2), the needle plate (4) is provided with a vertical hole which is slidably connected with the first connecting shaft (72), and the output end of the cylinder (71) is fixedly connected with the lower end face of the needle plate (4).

3. The FCT test tool of claim 1, wherein: the elastic clamping handles (66) are at least one in number, the elastic clamping handles (66) comprise mounting bars (661) fixedly arranged on the upper frame (61), at least two fixing bars (662) fixedly arranged on the mounting bars (661), connecting rods (663) connected with the fixing bars (662), bearing type hauling bars (664) slidingly arranged on the fixing bars (662), hooks (665) slidingly arranged on the fixing bars (662), a number of springs (666) sleeved on the fixing bars (662), two ends of each number of springs (666) respectively abut against the corresponding connecting rods (663) and the corresponding bearing type hauling bars (664), the hooks (665) are arranged between the corresponding bearing type hauling bars (664) and the corresponding mounting bars (661), and grooves clamped with the hooks (665) are formed in the lower frame (62).

4. The FCT test tool of claim 1, wherein: the PCB mounting device is characterized in that a placing groove (641) for placing the PCB is formed in the carrier plate (64), and positioning inclined tables (642) are arranged around the placing groove (641).

5. The FCT test tool of claim 3, wherein: the guide post (8) is fixedly arranged on the panel (2), the linear bearing (9) corresponding to the guide post (8) is arranged on the needle plate (4), the guide post (8) is sleeved in the linear bearing (9), a plurality of positioning pins (10) are arranged on the upper end face of the needle plate (4), and positioning holes corresponding to the positioning pins (10) one by one are formed in the carrier plate (64).