Test fixture for switching power supply interface
By designing a test fixture that includes translation and pressing mechanisms, the problem of different test devices required for different specifications of switching power supplies was solved, enabling convenient replacement of probes and electrical connection, and reducing test costs.
Patent Information
- Application Number
- CN202423032384.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Different specifications of switching power supplies require different specifications of testing equipment, resulting in high testing costs.
A test fixture including a translation mechanism and a pressing mechanism was designed. The translation mechanism moves the circuit board and the pressing mechanism realizes the electrical connection between the probe and the circuit board. Combined with the electrical connection between the ribbon cable and the pin socket, the probe can be easily replaced.
This improves the versatility of the test fixture and reduces the complexity and cost of replacing probes.
Smart Images
Figure CN223565726U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of circuit board testing, in particular to a test fixture for a switching power supply interface. BACKGROUND
[0002] A switching power supply is a high-frequency power conversion device. Its core is to use electronic switching devices to maintain a stable output voltage by controlling the on-off time ratio of the switching devices. Before the circuit board is assembled, it needs to be tested by a circuit board testing device to quickly find out whether there is a short circuit phenomenon between the pins on the circuit board, whether the necessary connecting wires are missing during packaging, and to ensure that the probe contacts well during testing and that the probe card or test seat is not a problem.
[0003] Because different specifications of switching power supplies correspond to different circuit boards, different specifications of testing devices are required, resulting in high testing costs. CONTENT OF THE UTILITY MODEL
[0004] In order to make up for the above shortcomings, the present application provides a test fixture for a switching power supply interface, aiming to improve the problems mentioned in the above background art.
[0005] The test fixture for a switching power supply interface provided by the present application comprises a control console and an upper cover. A translation mechanism and a pressing mechanism are arranged on the control console. A circuit board to be tested is arranged on the translation mechanism. A detection member is electrically connected to the circuit board on the pressing mechanism. A pin array is arranged on the pressing mechanism. A pin seat matched with the pin array is arranged on the control console. A wire array is arranged on the detection member and is plugged into the pin array.
[0006] In a specific embodiment, the translation mechanism comprises a sliding rail and a bottom plate. The bottom plate is slidingly connected to the sliding rail. The sliding rail is fixedly connected to the control console. A supporting plate is movably plugged into the bottom plate. The circuit board is placed on the supporting plate.
[0007] In a specific embodiment, the translation mechanism further comprises a translation air cylinder. The translation air cylinder is installed on the control console. The extension end of the translation air cylinder is fixedly connected to the bottom plate.
[0008] In the above implementation process, the translation air cylinder pushes the bottom plate to move along the sliding rail, which can move the supporting plate out of the upper cover to facilitate the placement of the circuit board to be tested, and then pull the circuit board back under the pressing mechanism. In this embodiment, a pin rod is arranged below the supporting plate and directly clamped on the bottom plate to facilitate quick replacement.
[0009] In a specific embodiment, the translation mechanism further comprises a damping rod. The damping rod is installed on the control console. The extension end of the damping rod is movably abutted against the bottom plate.
[0010] In the implementation process, when the translation cylinder retracts, sudden stop can cause the circuit board to shake and lose its original position, and then cause misalignment with the detection member, affecting detection, so the damping rod helps the base decelerate to avoid shaking caused by sudden stop.
[0011] In a specific embodiment, the pressing mechanism includes a light rod, a top plate and a vertical cylinder, the top plate is in sliding connection with the light rod, the light rod is fixedly connected with the control console, the detection member is installed on the top plate, the vertical cylinder is installed on the control console, and the telescopic end of the vertical cylinder is fixedly connected with the top plate.
[0012] In a specific embodiment, the top plate is fixedly connected with a positioning rod, the bottom plate is provided with a positioning hole matched with the positioning rod, and the top plate is inserted with the positioning rod.
[0013] In the implementation process, the vertical cylinder pushes the top plate to move up and down along the light rod to press the detection member onto the circuit board, and the positioning rod is inserted into the positioning hole in the bottom plate when the top plate moves down.
[0014] In a specific embodiment, the detection member includes a base plate, the base plate is detachably connected with the lower end of the top plate, the base plate is provided with a probe, and one end of the flat cable is electrically connected with the probe.
[0015] In the implementation process, the base plate is composed of a plurality of plates stacked together and is provided with a plurality of holes for mounting the probe, and one end of the flat cable is fixedly connected with the base plate and is replaced with the base plate.
[0016] In a specific embodiment, the base plate is provided with an elastic telescopic pressing rod, and the pressing rod is movably abutted against the circuit board.
[0017] In the implementation process, a plurality of pressing rods are arranged according to the circuit board to be detected and are fixed on the top plate by screws, and the circuit board is pressed on the supporting plate during detection to ensure accurate contact between the probe and the circuit board.
[0018] Compared with the prior art, the beneficial effects of the present application are as follows: the translation mechanism and the pressing mechanism are used to realize the detection action, the flat cable is used to connect the probe with the detection member, and the pressing action is used to electrically connect the probe with the needle holder on the control console, so as to finally realize the electrical connection between the detection member and the control console, facilitate the replacement of the detection member, and improve the universality. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0020] Figure 1 is a schematic diagram of a test fixture of a switching power supply interface provided by the embodiments of the present application;
[0021] Figure 2 is a schematic diagram of the connection relationship between the pressing mechanism and the translation mechanism provided by the embodiments of the present application;
[0022] Figure 3 is a schematic diagram of the connection relationship between the top plate and the detection member provided by the embodiments of the present application;
[0023] Figure 4 is a schematic diagram of the connection relationship between the translation mechanism and the control console provided by the embodiments of the present application.
[0024] In the figure: 10-control console; 20-upper cover; 30-translation mechanism; 31-slideway; 32-bottom plate; 33-supporting plate; 34-translation cylinder; 35-damping rod; 40-pressing mechanism; 41-light rod; 42-top plate; 43-vertical cylinder; 44-positioning rod; 50-circuit board; 60-detection member; 61-substrate; 62-probe; 63-pressing rod; 70-pin array; 80-pin seat; 90-wiring. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application.
[0026] Please refer to Figures 1-4 The present application provides a test fixture of a switching power supply interface, which comprises a control console 10 and an upper cover 20. The control console 10 is provided with a translation mechanism 30 and a pressing mechanism 40. The translation mechanism 30 is provided with a circuit board 50 to be detected. The pressing mechanism 40 is provided with a detection member 60 electrically connected with the circuit board 50. The pressing mechanism 40 is provided with a pin array 70. The control console 10 is provided with a pin seat 80 matched with the pin array 70. The detection member 60 is provided with a wiring 90 plugged with the pin array 70. The detection action is realized by the translation mechanism 30 and the pressing mechanism 40. The pin array 70 is connected with the detection member 60 by the wiring 90. The pin array 70 is electrically connected with the pin seat 80 on the control console 10 by the pressing action. Finally, the electrical connection between the detection member 60 and the control console 10 is realized, which facilitates the replacement of the detection member 60 and improves the versatility.
[0027] Please refer to Figures 1-4The translation mechanism 30 comprises a slide rail 31 and a bottom plate 32, the bottom plate 32 is slidably connected with the slide rail 31, the slide rail 31 is fixedly connected with the console 10, and the bottom plate 32 movably inserts a supporting plate 33, and the circuit board 50 is placed on the supporting plate 33. The translation mechanism 30 further comprises a translation cylinder 34, the translation cylinder 34 is installed on the console 10, and the telescopic end of the translation cylinder 34 is fixedly connected with the bottom plate 32. The translation cylinder 34 pushes the bottom plate 32 to move along the slide rail 31, the supporting plate 33 can be moved out of the upper cover 20, so that the circuit board 50 to be detected is placed, and then the circuit board 50 is pulled back to below the pressing mechanism 40. In the embodiment, the supporting plate 33 is provided with a pin rod, which is directly clamped on the bottom plate 32 to facilitate quick replacement.
[0028] Please refer to Figures 1-4 The translation mechanism 30 further comprises a damping rod 35, the damping rod 35 is installed on the console 10, and the telescopic end of the damping rod 35 movably abuts against the bottom plate 32. When the translation cylinder 34 is retracted, sudden stop can cause the circuit board 50 to shake and lose the original position, thereby causing misalignment with the detection piece 60 and affecting detection. Therefore, the damping rod 35 helps the base to slow down to avoid shaking caused by sudden stop.
[0029] Please refer to Figures 1-4 The pressing mechanism 40 comprises a light rod 41, a top plate 42 and a vertical cylinder 43, the top plate 42 is slidably connected with the light rod 41, the light rod 41 is fixedly connected with the console 10, the detection piece 60 is installed on the top plate 42, the vertical cylinder 43 is installed on the console 10, and the telescopic end of the vertical cylinder 43 is fixedly connected with the top plate 42. The top plate 42 is fixedly connected with a positioning rod 44, the bottom plate 32 is provided with a positioning hole matched with the positioning rod 44, and the top plate 42 is inserted with the positioning rod 44. The vertical cylinder 43 pushes the top plate 42 to move up and down along the light rod 41, so as to press the detection piece 60 to the circuit board 50, and the top plate 42 moves downward to drive the positioning rod 44 to be inserted into the positioning hole in the bottom plate 32.
[0030] Please refer to Figures 1-4 The detection piece 60 comprises a base plate 61, the base plate 61 is detachably connected with the lower end of the top plate 42, the base plate 61 is provided with a probe 62, and one end of the wire 90 is electrically connected with the probe 62. The base plate 61 is composed of a plurality of plates stacked together and is provided with a plurality of holes for mounting the probe 62, one end of the wire 90 is fixedly connected with the base plate 61 and is replaced with the base plate 61.
[0031] Please refer to Figures 1-4 The base plate 61 is provided with an elastic telescopic pressing rod 63, and the pressing rod 63 movably abuts against the circuit board 50. The pressing rod 63 is provided with a plurality of pressing rods 63 according to the circuit board 50 to be detected, and the pressing rod 63 is fixed on the top plate 42 by means of screws. During detection, the circuit board 50 is first pressed on the supporting plate 33, so that the probe 62 can accurately contact the circuit board 50.
[0032] The working principle of the test fixture of the switching power supply interface is as follows: the circuit board 50 to be tested is placed on the supporting plate 33, the translation cylinder 34 is retracted, the bottom plate 32 is moved into the upper cover 20 along the slide rail 31, the bottom plate 32 will first contact the damping rod 35 when it is about to be positioned, and the speed is reduced to avoid the shaking of the circuit board 50 caused by sudden stop, then the vertical cylinder 43 pushes the top plate 42 to move downward, the top plate 42 moves downward to drive the positioning rod 44 to be inserted into the positioning hole on the bottom plate 32, the positioning of the substrate 61 and the bottom plate 32 is realized, then the spring pressing rod 63 first contacts the circuit board 50, and the circuit board 50 is tightly pressed against the supporting plate 33, so that the probe 62 accurately contacts the circuit board 50, the top plate 42 is pressed downward at the same time to drive the pin array 70 to be pressed downward and be connected with the pin seat 80 on the control console 10, the electrical connection between the probe 62 and the control console 10 is realized, when it is necessary to replace the detection piece 60, the wire 90 is directly pulled away from the pin array 70, in another embodiment, the pin array 70 is directly arranged on the substrate 61, and the operation of plugging and unplugging the wire 90 can be omitted, it should be noted that the pin array 70 and the wire 90 are connected through the connector, in summary, the translation mechanism 30 and the downward pressing mechanism 40 are used to realize the detection action, the wire 90 is used to connect the pin array 70 and the detection piece 60, and the electrical connection between the pin array 70 and the pin seat 80 on the control console 10 is realized through the downward pressing action, finally the electrical connection between the detection piece 60 and the control console 10 is realized, the replacement of the detection piece 60 is facilitated, and the universality is improved.
[0033] It should be noted that, for the sake of clear display, the probe 62 and the pin array 70 are not shown in the drawings, but the holes in which the probe 62 and the pin array 70 are located are reserved.
[0034] The above is only an embodiment of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, improvement or equivalent replacement made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
Claims
1. A test fixture for a switching power supply interface, characterized in that, The utility model provides a kind of circuit board testing device, including console (10) and upper cover (20), the console (10) is provided with translation mechanism (30) and press mechanism (40), the translation mechanism (30) is provided with the circuit board (50) to be measured, the press mechanism (40) is provided with detection member (60) and the circuit board (50) electrical connection, the press mechanism (40) is provided with pin (70), the console (10) is provided with needle seat (80) compatible with pin (70), the detection member (60) is provided with wire (90) and pin (70) plug.
2. The test fixture of claim 1, wherein, The translation mechanism (30) includes a slide rail (31) and a bottom plate (32), the bottom plate (32) is slidably connected with the slide rail (31), the slide rail (31) is fixedly connected with the console (10), and the bottom plate (32) movably inserts a supporting plate (33), and the circuit board (50) is placed on the supporting plate (33).
3. The test fixture for a switching power supply interface according to claim 2, characterized in that, The translation mechanism (30) further includes a translation cylinder (34), the translation cylinder (34) is installed on the console (10), and the telescopic end of the translation cylinder (34) is fixedly connected with the bottom plate (32).
4. The test fixture for a switching power supply interface according to claim 3, characterized in that, The translation mechanism (30) further includes a damping rod (35), the damping rod (35) is installed on the console (10), and the telescopic end of the damping rod (35) movably abuts against the bottom plate (32).
5. A test fixture for a switching power supply interface according to claim 4, characterized in that, The press mechanism (40) includes a light rod (41), a top plate (42) and a vertical cylinder (43), the top plate (42) is slidably connected with the light rod (41), the light rod (41) is fixedly connected with the console (10), the detection member (60) is installed on the top plate (42), the vertical cylinder (43) is installed on the console (10), and the telescopic end of the vertical cylinder (43) is fixedly connected with the top plate (42).
6. The test fixture of claim 5, wherein, The top plate (42) is fixedly connected with a positioning rod (44), the bottom plate (32) is provided with a positioning hole matched with the positioning rod (44), and the top plate (42) is inserted with the positioning rod (44).
7. The test fixture of claim 6, wherein the test fixture is configured to test a switching power supply interface. The detection member (60) includes a base plate (61), the base plate (61) is detachably connected with the lower end of the top plate (42), the base plate (61) is provided with a probe (62), and one end of the wire (90) is electrically connected with the probe (62).
8. The test fixture of claim 7, wherein, The base plate (61) is provided with an elastic telescopic pressing rod (63), and the pressing rod (63) movably abuts against the circuit board (50).