Test fixture rotating and pressing mechanism and test mechanism

Abstract

The utility model discloses a test fixture rotating and pressing mechanism and a test mechanism, which are compact in structure, reduce manual operation force and are accurate in pressing connection. The test fixture rotating and pressing mechanism comprises a carrier plate, Y-axis moving plates are arranged at two ends of the carrier plate, a test fixture plate is mounted between the two Y-axis moving plates, a plurality of guide wheels are arranged at two ends of the test fixture plate, a plurality of bevel guide grooves matched with the guide wheels are formed in the Y-axis moving plates, and the bevel guide grooves are matched with the guide wheels. A connecting rod assembly and a power assembly connected with the connecting rod assembly are arranged on the lower side of the middle of the front end of the carrying plate, X-axis moving plates are arranged at the two ends of the connecting rod assembly correspondingly, gears are arranged at the lower ends of the two ends of the carrying plate correspondingly, and X-axis racks meshed with the gears are arranged at the front ends of the two X-axis moving plates correspondingly. And Y-axis racks engaged with the gears are arranged on the lower side end surfaces of the two Y-axis moving plates. The circuit board testing device is applied to the technical field of circuit board testing.

Description

Technical Field

[0001] The utility model is applied to the technical field of circuit board testing, and particularly relates to a test fixture rotating and pressing mechanism and a test mechanism. Background Art

[0002] In circuit board testing, commonly used test fixtures are either too simple, mostly constructed with quick clamps, with insufficient operating space and the required manual pressure, which easily increases the operator's workload. In addition, the clamping force is difficult to control, and the test fixture's pressure connection is not accurate. Or they are too complicated, constructed with cylinders, solenoid valves and electronic control boards, which have the disadvantages of long development and processing time and high cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a test fixture rotating and pressing mechanism and a test mechanism which have a compact structure, reduce manual operation effort and have precise pressing connection.

[0004] The y-axis movable frame is a movable frame, and the movable frame is a movable frame.

[0005] Furthermore, the connecting rod assembly includes a rectangular frame, a rotating block, a first connecting rod and a second connecting rod, the power assembly is a handle, the rectangular frame is installed on the lower middle side of the front end of the carrier plate, the rotating block is hinged in the rectangular frame, one end of the handle is hinged to the rotating block, and the other end of the handle is provided with a handle, the two ends of the rotating block are respectively hinged to one end of the first connecting rod and one end of the second connecting rod, and the other end of the first connecting rod and the other end of the second connecting rod are respectively connected to one end of the two X-axis movable plates.

[0006] Furthermore, the X-axis movable plate includes a fixed seat and a movable rod, the fixed seat is fixed to the lower side of the carrier plate, a sliding hole adapted to the movable rod is provided in the fixed seat, one end of the movable rod passes through the rectangular frame and is connected to the first connecting rod or the second connecting rod, and the other end of the movable rod passes through the sliding hole and the X-axis rack is fixed at the end.

[0007] Furthermore, the Y-axis movable plate includes a Y-axis movable guide rail, a slider and a sliding plate. The sliding plate is adapted to be installed on the Y-axis movable guide rail through the slider. The inclined guide grooves are provided on the front and rear of one end face of the sliding plate. A connecting block passing through the carrier plate is provided on the lower side of the other end of the sliding plate, and the Y-axis rack is fixed on one end face of the connecting block.

[0008] Furthermore, the rotation angle of the handle is 0-90°, and the moving stroke of the connection between the first connecting rod and the moving rod or the connection between the second connecting rod and the moving rod is from the end of the rectangular frame to the rotating block. When the handle is rotated 90°, the connection between the first connecting rod and the moving rod and the connection between the second connecting rod and the moving rod move to the two ends of the rectangular frame and are limited and locked, and at this time the Y-axis moving plate moves forward to move the guide wheel to the lower end of the inclined guide groove.

[0009] Furthermore, the X-axis rack is located at a lower level than the Y-axis rack.

[0010] Furthermore, a plurality of probe groups are provided at the lower end of the test fixture plate, and a plurality of avoidance openings are provided on the carrier plate directly below the probe groups.

[0011] Furthermore, a testing mechanism includes a testing cabinet, a testing table is provided at the upper end of the testing cabinet, a lower testing fixture is provided on the testing table, the testing fixture is provided with the testing fixture rotating and pressing mechanism, the lower testing fixture is adapted to the testing fixture plate, and the product to be tested is placed in the lower testing fixture.

[0012] The beneficial effects of the present invention are as follows: the power assembly drives the connecting rod assembly to convert the force in the rotational direction into a force in the horizontal X direction, thereby driving the X-axis moving plate to move and driving the gear to convert the force in the X direction into a force in the horizontal Y direction, thereby driving the Y-axis moving plate to move, and then the test fixture plate is converted into downward pressure through the inclined guide groove, so that the fixture is pressed down. Because the overall structure of the present invention is compact and the required operating space is small, and the downward pressure is driven by the combination of the inclined guide groove and the connecting rod assembly, the effort of manual operation can be greatly reduced, and the downward pressure angle of the test fixture plate is precisely controllable, so that the docking of the test fixture plate can be accurately connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a structural diagram of the utility model;

[0014] Figure 2 It is a bottom view of the utility model;

[0015] Figure 3 It is an exploded view of the utility model;

[0016] Figure 4 yes Figure 3 Enlarged schematic diagram of part A. DETAILED DESCRIPTION

[0017] like Figures 1 to 4 As shown, in this embodiment, the utility model includes a test fixture rotation and pressing mechanism and a test mechanism, the test fixture rotation and pressing mechanism includes a carrier plate 1, Y-axis movable plates 2 are provided at both ends of the carrier plate 1, a test fixture plate 3 is installed between the two Y-axis movable plates 2, and a plurality of guide wheels 4 are provided at both ends of the test fixture plate 3. The Y-axis movable plate 2 is provided with a plurality of inclined guide grooves 5 adapted to the guide wheels 4, and the inclination angle of the inclined guide groove 5 is 5.6°. A connecting rod assembly 6 and a power assembly 7 connected to the connecting rod assembly 6 are provided on the lower side of the middle part of the front end of the carrier plate 1, and an X-axis movable plate 8 is provided at both ends of the connecting rod assembly 6. The power assembly 7 is used to provide power to drive the connecting rod assembly 6 to drive the two X-axis The movable plates 8 move toward each other and move closer to the middle of the carrier plate 1 or move away from the middle of the carrier plate 1. Gears 9 are provided at both ends of the carrier plate 1. The front ends of the two X-axis movable plates 8 are provided with X-axis racks 10 meshing with the gear 9. The lower end surfaces of the two Y-axis movable plates 2 are provided with Y-axis racks 11 meshing with the gear 9. This design can drive the X-axis rack 10 to engage the gear 9 and rotate by the movement of the X-axis movable plate 8, thereby moving the Y-axis rack 11, and then driving the Y-axis movable plate 2 to move, thereby moving the inclined guide groove 5, and causing the guide wheel 4 in the test fixture plate 3 to move vertically in the inclined guide groove 5. The moving stroke of the X-axis rack 10 and the Y-axis rack 11 is 50 mm, and the gear rotation angle is 90°.

[0018] In this embodiment, the connecting rod assembly 6 includes a rectangular frame 61, a rotating block 62, a first connecting rod 63 and a second connecting rod 64, the power assembly 7 is a handle, the rectangular frame 61 is installed on the lower side of the middle part of the front end of the carrier plate 1, the rotating block 62 is hinged in the rectangular frame 61, one end of the handle is hinged to the rotating block 62, and the other end of the handle is provided with a handle, the two ends of the rotating block 62 are respectively hinged to one end of the first connecting rod 63 and one end of the second connecting rod 64, the other end of the first connecting rod 63 and the other end of the second connecting rod 64 are respectively connected to one end of the two X-axis movable plates 8; this design can realize the structure of pressing down the test fixture plate 3 by manually rotating the handle.

[0019] In this embodiment, the X-axis movable plate 8 includes a fixed seat 81 and a movable rod 82. The fixed seat 81 is fixed to the lower side of the carrier plate 1. A sliding hole adapted to the movable rod 82 is provided in the fixed seat 81. One end of the movable rod 82 passes through the rectangular frame 61 and is connected to the first connecting rod 63 or the second connecting rod 64. The other end of the movable rod 82 passes through the sliding hole and the X-axis rack 10 is fixed at the end. This design drives the two movable rods 82 to move along the X-axis direction through the connecting rod assembly 6, so that the X-axis rack 10 drives the gear 9 to rotate.

[0020] In this embodiment, the Y-axis movable plate 2 includes a Y-axis movable guide rail 21, a slider 22 and a sliding plate 23. The sliding plate 23 is adapted to be installed on the Y-axis movable guide rail 21 through the slider 22. The inclined guide groove 5 is provided on the front and rear of one end surface of the sliding plate 23. A connecting block 24 passing through the carrier plate 1 is provided on the lower side of the other end of the sliding plate 23. The Y-axis rack 11 is fixed on one end surface of the connecting block 24. This design drives the Y-axis rack 11 to move along the Y-axis direction through the gear 9, thereby driving the sliding plate 23 to move along the Y-axis direction, so that the guide wheel 4 can be vertically lifted and lowered along the Z-axis when the inclined guide groove moves along the Y-axis direction.

[0021] In this embodiment, the rotation angle of the handle is 0-90°, and the moving stroke of the connection between the first connecting rod 63 and the moving rod 82 or the connection between the second connecting rod 64 and the moving rod 82 is from the end of the rectangular frame 61 to the rotating block 62. When the handle is rotated 90°, the connection between the first connecting rod 63 and the moving rod 82 and the connection between the second connecting rod 64 and the moving rod 82 are moved to the two ends of the rectangular frame 61 for limit locking, and at this time the Y-axis moving plate 2 moves forward to move the guide wheel 4 to the lower end of the inclined guide groove 5; this design can enable the connecting rod assembly 6 to reach a dead point at the end of the moving stroke, automatically locking the test fixture plate 3.

[0022] In this embodiment, the X-axis rack 10 is located at a lower level than the Y-axis rack 11 ; this design effectively avoids interference between the X-axis rack 10 and the Y-axis rack 11 during movement.

[0023] In this embodiment, a plurality of probe groups 12 are provided at the lower end of the test fixture plate 3, and a plurality of avoidance openings 13 located directly below the probe groups 12 are provided on the carrier plate 1. The probe groups 12 are provided with buffer spring assemblies so that they can withstand the reverse elastic force of the probe groups 12350KG when pressed down.

[0024] In this embodiment, a testing mechanism includes a testing cabinet, a testing table is provided at the upper end of the testing cabinet, a lower testing fixture is provided on the testing table, the testing fixture is provided with the testing fixture rotating and pressing mechanism, the lower testing fixture is adapted to the testing fixture plate 3, and the product to be tested is placed in the lower testing fixture.

[0025] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A test fixture rotation and pressing mechanism, comprising a carrier plate (1), two ends of the carrier plate (1) are provided with Y-axis movable plates (2), a test fixture plate (3) is installed between the two Y-axis movable plates (2), and is characterized in that: Both ends of the test fixture plate (3) are provided with a plurality of guide wheels (4), the Y-axis movable plate (2) is provided with a plurality of inclined guide grooves (5) adapted to the guide wheels (4), the lower side of the middle portion of the front end of the carrier plate (1) is provided with a connecting rod assembly (6) and a power assembly (7) connected to the connecting rod assembly (6), both ends of the connecting rod assembly (6) are provided with an X-axis movable plate (8), the power assembly (7) is used to provide power to drive the connecting rod assembly (6) to drive the two X-axis movable plates (8) to move toward each other toward the middle portion of the carrier plate (1) or to move away from the middle portion of the carrier plate (1), both ends of the carrier plate (1) are provided with a gear (9), the front ends of the two X-axis movable plates (8) are provided with an X-axis rack (10) meshing with the gear (9), and the lower end surfaces of the two Y-axis movable plates (2) are provided with a Y-axis rack (11) meshing with the gear (9).

2. The test fixture rotation and pressing mechanism according to claim 1, characterized in that: The connecting rod assembly (6) includes a rectangular frame (61), a rotating block (62), a first connecting rod (63) and a second connecting rod (64); the power assembly (7) is a handle; the rectangular frame (61) is installed on the lower side of the middle part of the front end of the carrier plate (1); the rotating block (62) is hinged in the rectangular frame (61); one end of the handle is hinged to the rotating block (62); the other end of the handle is provided with a handle; the two ends of the rotating block (62) are respectively hinged to one end of the first connecting rod (63) and one end of the second connecting rod (64); the other end of the first connecting rod (63) and the other end of the second connecting rod (64) are respectively connected to one end of the two X-axis movable plates (8).

3. The test fixture rotation and pressing mechanism according to claim 2, characterized in that: The X-axis movable plate (8) includes a fixed seat (81) and a movable rod (82), wherein the fixed seat (81) is fixed to the lower side of the carrier plate (1), and a sliding hole adapted to the movable rod (82) is provided in the fixed seat (81), one end of the movable rod (82) passes through the rectangular frame (61) and is connected to the first connecting rod (63) or the second connecting rod (64), and the other end of the movable rod (82) passes through the sliding hole and is fixed with the X-axis rack (10) at the end.

4. The test fixture rotation and pressing mechanism according to claim 1, characterized in that: The Y-axis moving plate (2) comprises a Y-axis moving guide rail (21), a slider (22) and a sliding plate (23); the sliding plate (23) is adapted to be mounted on the Y-axis moving guide rail (21) via the slider (22); the inclined guide grooves (5) are provided on the front and rear of one end face of the sliding plate (23); a connecting block (24) passing through the carrier plate (1) is provided on the lower side of the other end of the sliding plate (23); and the Y-axis rack (11) is fixed on one end face of the connecting block (24).

5. The test fixture rotation and pressing mechanism according to claim 3, characterized in that: The rotation angle of the handle is 0-90°, and the movement stroke of the connection between the first connecting rod (63) and the moving rod (82) or the connection between the second connecting rod (64) and the moving rod (82) is from the end of the rectangular frame (61) to the rotating block (62). When the handle is rotated 90°, the connection between the first connecting rod (63) and the moving rod (82) and the connection between the second connecting rod (64) and the moving rod (82) are moved to the two ends of the rectangular frame (61) for limit locking, and at this time, the Y-axis moving plate (2) moves forward to move the guide wheel (4) to the lower end of the inclined guide groove (5).

6. The test fixture rotation and pressing mechanism according to claim 4, characterized in that: The X-axis rack (10) is located at a lower level than the Y-axis rack (11).

7. The test fixture rotation and pressing mechanism according to claim 1, characterized in that: A plurality of probe groups (12) are provided at the lower end of the test fixture plate (3), and a plurality of avoidance openings (13) located directly below the probe groups (12) are provided on the carrier plate (1).

8. A testing mechanism, characterized in that: The invention comprises a test cabinet, wherein a test table is provided at the upper end of the test cabinet, a lower test fixture is provided on the test table, and a test fixture rotating and pressing mechanism as described in any one of claims 1 to 7 is provided on the lower test fixture, the lower test fixture is adapted to the test fixture plate (3), and the product to be tested is placed in the lower test fixture.

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