A test board for a circuit board

Abstract

The utility model relates to the field of circuit board test, concretely is a kind of test board for circuit board, including the support mechanism for supporting and the clamping mechanism for being fixed to circuit board, cooperation mechanism and the locking mechanism for being locked to the clamping mechanism, cooperation mechanism, the locking mechanism is slidably connected in the clamping mechanism in the locking end of locking mechanism, the movable end of locking mechanism is connected on support mechanism, and the pressing mechanism for being detected to circuit board is provided on the upside of clamping mechanism.The utility model can be quickly passed through the cooperation of locking mechanism after switching between multiple stations, the position of circuit board is accurately positioned, so that the test of detection needle is conveniently and quickly used, the misplacement of the offset of small detection needle due to moving process is avoided, and when the lock catch is quickly moved, the shaking of circuit board is also avoided, so that the positioning of subsequent station is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing, and in particular to a test bench for circuit boards. Background Technology

[0002] A circuit board test bench is a specialized device designed specifically for testing the performance and quality of circuit boards. It typically integrates functional modules such as power supply, signal generation, data acquisition, and fault diagnosis. It can be connected to the test points of the circuit board through probes, fixtures, etc., to simulate its working environment and apply various test signals, thereby quickly detecting key indicators such as circuit continuity, component parameters, and signal transmission stability. It is widely used in the production and quality inspection stages of the electronics manufacturing industry to ensure that the circuit boards meet design standards and usage requirements.

[0003] Among existing equipment, a Chinese utility model with announcement number CN217931934U discloses a special test bench for circuit boards, which fixes and tests circuit boards in an exposed manner. However, in actual use, it has been found that because circuit boards need to be tested at multiple stations and through multiple processes, multiple removals and fixations require multiple clamping and positioning, which makes it necessary to ensure alignment during positioning and affects the testing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a test bench for circuit boards in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A test bench for circuit boards includes a support mechanism for supporting the circuit board, a clamping mechanism and a mating mechanism for fixing the circuit board, and a locking mechanism for locking the clamping mechanism and the mating mechanism. The clamping mechanism is mounted on the support mechanism, the mating mechanism is fixedly connected to the clamping mechanism, the locking end of the locking mechanism is slidably connected inside the clamping mechanism, the movable end of the locking mechanism is connected to the support mechanism, and a pressing mechanism for testing the circuit board is provided on the upper side of the clamping mechanism.

[0007] The pressing mechanism includes a fixed frame, a handle, a pressure rod, and a detection plate. The front end of the fixed frame is connected to the handle via a pin, the bottom of the handle is connected to the pressure rod, and the bottom of the pressure rod is equipped with a detection plate. The detection plate is provided with a plurality of detection pins for detection.

[0008] The clamping mechanism includes a plate fixing support. The bottom of the plate fixing support is connected to the base of the support mechanism through a movable component. The upper end of the plate fixing support is formed with a groove for fixing a circuit board. A rear clamping plate is installed horizontally in the groove. The two ends of the rear clamping plate cooperate with the plate fixing support through movable components.

[0009] The rear clamping plate is provided with the cooperating mechanism on its front side, and the rear clamping plate and the cooperating mechanism are engaged with the locking end of the locking mechanism on both sides.

[0010] Preferably, the mating mechanism includes a front clamping seat, and a swing shaft seat is connected to the rear side of the front clamping seat via a front clamping plate. A support spring with elastic support is provided on the lower side of the swing shaft seat.

[0011] Preferably, the movable component of the rear clamping plate includes a slider and a slide rod. The slider is fixed to both sides of the rear clamping plate, and the slide rod is connected through the slider from front to back. A spring is provided on the slide rod between the rear side of the slider and the plate fixing support.

[0012] Preferably, the locking end of the locking mechanism includes a pressure plate, a connecting rod, a compression ball, and a locking plate. The pressure plate is located behind the rear clamping plate. Connecting rods are fixedly connected to both sides of the front end of the pressure plate. The connecting rods are slidably connected to the plate fixing support. The connecting rods extend into the plate fixing support and connect to two compression balls. A locking plate is provided on one side of the compression ball corresponding to the rear clamping plate. The locking plate is formed with compression grooves that cooperate with the compression balls.

[0013] Preferably, the movable end of the locking mechanism includes a lower pressure plate, a transmission cylinder, and a locking cylinder. One end of the lower pressure plate is fixed to the pressure rod, and the bottom of the other end of the lower pressure plate is provided with a transmission cylinder. The pressure output end of the transmission cylinder is connected to the locking cylinder. The locking cylinder is installed horizontally, and the movable end of the locking cylinder corresponds horizontally to the pressure plate.

[0014] Preferably, the bottom of the plate fixing support is connected to a base plate, and the bottom of the base plate cooperates with the base through a sliding component. The sliding component includes a slide rail and a sliding block, and a locking buckle is engaged on the slide rail.

[0015] Preferably, the support mechanism further includes a back plate, the fixing frame is connected to the back plate by bolts, and an expansion seat is provided on the side of the fixing frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Through the cooperation of locking mechanism, clamping mechanism and cooperating mechanism, after switching between multiple workstations, the circuit board can be accurately positioned quickly through the cooperation of locking mechanism, so as to facilitate and quickly use the detection probe for testing, avoid the misalignment of the tiny detection probe due to the offset caused during the movement, and also prevent the circuit board from shaking when moving quickly using the latch, thus ensuring the positioning of subsequent workstations.

[0018] 2. By using the flipped front clamping plate, the circuit board is subjected to downward pressure, thereby ensuring the stability during clamping. In conjunction with the locking plates on both sides, the rear clamping plate and the front clamping plate can be quickly locked to ensure stability and prevent shaking during subsequent testing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a test bench for circuit boards according to the present invention;

[0021] Figure 2 This is a partial structural detail diagram of a test bench for circuit boards according to the present invention;

[0022] Figure 3 This is a schematic diagram of the clamping mechanism structure of a circuit board test bench according to the present invention;

[0023] Figure 4 This is a schematic diagram of the extrusion ball mounting structure of a circuit board test bench according to the present invention;

[0024] Figure 5 This is a schematic diagram of the mating mechanism of a test bench for circuit boards according to the present invention;

[0025] Figure 6 This is a side view of the pressing mechanism of a circuit board test bench according to the present invention.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Support mechanism; 2. Pressing mechanism; 3. Locking mechanism; 4. Clamping mechanism; 5. Matching mechanism; 11. Back plate; 12. Base; 13. Expansion seat; 21. Fixing frame; 22. Handle; 23. Pressure rod; 24. Detection plate; 25. Detection needle; 31. Lower pressure plate; 32. Transfer cylinder; 33. Locking cylinder; 34. Pressure plate; 35. Connecting rod; 36. Extrusion ball; 37. Locking plate; 41. Plate fixing support; 42. Rear clamping plate; 43. Slider; 44. Slide rod; 45. Base plate; 46. Lock; 51. Front clamping seat; 52. Front clamping plate; 53. Swing shaft seat; 54. Support spring. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-6 As shown, a test bench for circuit boards includes a support mechanism 1 for support, a clamping mechanism 4 and a mating mechanism 5 for fixing the circuit board, and a locking mechanism 3 for locking the clamping mechanism 4 and the mating mechanism 5. The clamping mechanism 4 is mounted on the support mechanism 1, the mating mechanism 5 is fixedly connected to the clamping mechanism 4, the locking end of the locking mechanism 3 is slidably connected inside the clamping mechanism 4, and the movable end of the locking mechanism 3 is connected to the support mechanism 1. A pressing mechanism 2 for testing the circuit board is provided on the upper side of the clamping mechanism 4.

[0032] The pressing mechanism 2 includes a fixed frame 21, a handle 22, a pressure rod 23, and a detection plate 24. The front end of the fixed frame 21 is connected to the handle 22 via a pin. The bottom of the handle 22 is connected to the pressure rod 23. The bottom of the pressure rod 23 is equipped with the detection plate 24, and the detection plate 24 is provided with a number of detection needles 25 for detection.

[0033] The clamping mechanism 4 includes a plate fixing support 41. The bottom of the plate fixing support 41 is connected to the base 12 of the support mechanism 1 through a movable component. The upper end of the plate fixing support 41 is formed with a groove for fixing the circuit board. A rear clamping plate 42 is installed horizontally in the groove. The two ends of the rear clamping plate 42 cooperate with the plate fixing support 41 through movable components.

[0034] The rear clamping plate 42 is provided with a cooperating mechanism 5 on the front side, and the rear clamping plate 42 and the cooperating mechanism 5 are engaged with the locking end of the locking mechanism 3 on both sides.

[0035] Preferably, the mating mechanism 5 includes a front clamping seat 51, and a swing shaft seat 53 is connected to the rear side of the front clamping seat 51 via a front clamping plate 52. A support spring 54 with elastic support is provided on the lower side of the swing shaft seat 53. When the front clamping plate 52 is squeezed by the circuit board, it will squeeze the support spring 54 forward to retract, thereby providing a tilting downward pressure to the circuit board.

[0036] Preferably, the movable components of the rear clamping plate 42 include a slider 43 and a slide rod 44. The slider 43 is fixed to both sides of the rear clamping plate 42, and the slide rod 44 is connected through the slider 43 from front to back. A spring is provided on the slide rod 44 between the rear side of the slider 43 and the plate fixing support 41. When it is necessary to install the circuit board, the rear clamping plate 42 is squeezed to move the rear clamping plate 42 backward, and then the circuit board is pressed down, so that the circuit board is stuck in the groove.

[0037] Preferably, the locking end of the locking mechanism 3 includes a pressure plate 34, a connecting rod 35, a compression ball 36, and a locking plate 37. The pressure plate 34 is located behind the rear clamping plate 42. The front ends of the pressure plate 34 are fixedly connected to the connecting rods 35. The connecting rods 35 are slidably connected to the plate fixing support 41, and the connecting rods 35 extend into the plate fixing support 41 and connect to two compression balls 36. The compression balls 36 are provided with a locking plate 37 on one side of the rear clamping plate 42. The locking plate 37 is formed with a compression groove that matches the compression ball 36.

[0038] Preferably, the movable end of the locking mechanism 3 includes a lower pressure plate 31, a transmission cylinder 32, and a locking cylinder 33. One end of the lower pressure plate 31 is fixed to the pressure rod 23, and the bottom of the other end of the lower pressure plate 31 is provided with a transmission cylinder 32. The pressure output end of the transmission cylinder 32 is connected to the locking cylinder 33. The locking cylinder 33 is installed horizontally, and the movable end of the locking cylinder 33 faces the pressure plate 34 horizontally.

[0039] Preferably, the bottom of the plate fixing support 41 is connected to the base plate 45, and the bottom of the base plate 45 is engaged with the base 12 through a sliding component. The sliding component includes a slide rail and a sliding block, and a lock 46 is engaged on the slide rail.

[0040] Preferably, the support mechanism 1 further includes a back plate 11, and the fixing frame 21 is connected to the back plate 11 by bolts. An expansion seat 13 is provided on the side of the fixing frame 21.

[0041] Working principle: When testing is required, push the rear clamping plate 42 to move it backward. At this time, the circuit board is clamped between the rear clamping plate 42 and the front clamping plate 52. After the circuit board is released, the springs on both sides of the rear clamping plate 42 push the rear clamping plate 42 and the circuit board forward. At this time, the front clamping plate 52 is subjected to force and flips over. After the front clamping plate 52 flips inward, it applies a downward pressure to fix the circuit board.

[0042] When the first station inspection is required, push the base plate 45 so that it slides and contacts the latch 46. At this time, pre-positioning is performed. Then, pull the handle 22 to move the pressure rod 23 and the lower pressure plate 31 downward. During the downward movement of the lower pressure plate 31, the pressure of the lower pressure plate 31 is transmitted through the transmission cylinder 32 and the locking cylinder 33 to extend the movable end of the locking cylinder 33. The locking cylinder 33 squeezes the pressure plate 34, and the pressure plate 34 squeezes the connecting rod 35 and the squeezing ball 36, so that the squeezing ball 36 slides inside the plate fixing support 41. This causes the squeezing ball 36 to squeeze the locking plate 37 and retract inward to squeeze the rear clamping plate 42 and the front clamping plate 52, thereby locking the rear clamping plate 42 and the front clamping plate 52.

[0043] The synchronous pressure rod 23 continues to move downward, driving the detection plate 24 and the detection needle 25 to align with the detection position of the circuit board. The detection needle 25 is connected to the multimeter and other testing equipment (not shown) on the back plate 11 to test the circuit board. After the test, the handle 22 is lifted to release the base plate 45, and the base plate 45 is pushed to the second station for testing.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A test bench for circuit boards, characterized in that: It includes a support mechanism (1) for supporting the circuit board, a clamping mechanism (4) and a mating mechanism (5) for fixing the circuit board, and a locking mechanism (3) for locking the clamping mechanism (4) and the mating mechanism (5). The clamping mechanism (4) is mounted on the support mechanism (1), the mating mechanism (5) is fixedly connected to the clamping mechanism (4), the locking end of the locking mechanism (3) is slidably connected inside the clamping mechanism (4), and the movable end of the locking mechanism (3) is connected to the support mechanism (1). A pressing mechanism (2) for detecting the circuit board is provided on the upper side of the clamping mechanism (4). The pressing mechanism (2) includes a fixed frame (21), a handle (22), a pressure rod (23), and a detection plate (24). The front end of the fixed frame (21) is connected to the handle (22) via a pin. The bottom of the handle (22) is connected to the pressure rod (23). The bottom of the pressure rod (23) is equipped with the detection plate (24). The detection plate (24) is provided with a plurality of detection needles (25) for detection. The clamping mechanism (4) includes a plate fixing support (41). The bottom of the plate fixing support (41) is connected to the base (12) of the support mechanism (1) through a movable component. The upper end of the plate fixing support (41) is formed with a groove for fixing the circuit board. A rear clamping plate (42) is installed horizontally in the groove. The two ends of the rear clamping plate (42) cooperate with the plate fixing support (41) through movable components. The rear clamping plate (42) is provided with the cooperating mechanism (5) on its front side, and the rear clamping plate (42) and the cooperating mechanism (5) are engaged with the locking end of the locking mechanism (3) on both sides.

2. The test bench for circuit boards according to claim 1, characterized in that: The cooperating mechanism (5) includes a front clamping seat (51), and a swing shaft seat (53) is connected to the rear side of the front clamping seat (51) via a front clamping plate (52). A support spring (54) with elastic support is provided on the lower side of the swing shaft seat (53).

3. A test bench for circuit boards according to claim 2, characterized in that: The movable components of the rear clamping plate (42) include a slider (43) and a slide rod (44). The slider (43) is fixed to both sides of the rear clamping plate (42). The slide rod (44) is connected through the slider (43) from front to back. A spring is provided on the slide rod (44) between the rear side of the slider (43) and the plate fixing support (41).

4. A test bench for circuit boards according to claim 3, characterized in that: The locking end of the locking mechanism (3) includes a pressure plate (34), a connecting rod (35), a compression ball (36), and a locking plate (37). The pressure plate (34) is located behind the rear clamping plate (42). The front ends of the pressure plate (34) are fixedly connected to the connecting rod (35). The connecting rod (35) is slidably connected to the plate fixing support (41). The connecting rod (35) extends into the plate fixing support (41) and connects to two compression balls (36). The compression ball (36) is provided with a locking plate (37) on one side of the rear clamping plate (42). The locking plate (37) is formed with a compression groove that matches the compression ball (36).

5. A test bench for circuit boards according to claim 4, characterized in that: The movable end of the locking mechanism (3) includes a lower pressure plate (31), a transmission cylinder (32), and a locking cylinder (33). One end of the lower pressure plate (31) is fixed to the pressure rod (23), and the bottom of the other end of the lower pressure plate (31) is provided with a transmission cylinder (32). The pressure output end of the transmission cylinder (32) is connected to the locking cylinder (33). The locking cylinder (33) is installed horizontally, and the movable end of the locking cylinder (33) corresponds horizontally to the pressure plate (34).

6. A test bench for circuit boards according to claim 5, characterized in that: The bottom of the plate fixing support (41) is connected to a base plate (45). The bottom of the base plate (45) is connected to the base (12) through a sliding component. The sliding component includes a slide rail and a sliding block. A lock (46) is engaged on the slide rail.

7. A test bench for circuit boards according to claim 1, characterized in that: The support mechanism (1) also includes a back plate (11), and the fixing frame (21) is connected to the back plate (11) by bolts. An expansion seat (13) is provided on the side of the fixing frame (21).

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