Circuit board test fixture

Abstract

The application discloses a circuit board test fixture and relates to the technical field of circuit board testing. The lifting rod of the circuit board test fixture is fixedly connected with an electric push rod, the driving part of the electric push rod is fixedly connected with a moving rod, the moving rod is coaxial with the lifting rod, and the electric push rod is used for driving the moving rod to move along the axial direction of the lifting rod. The lifting rod is also slidably connected with an abutting block, the abutting block can slide along the radial direction of the lifting rod, the abutting block is arranged on the outer side of the moving rod, the abutting block is connected with the moving rod through a first connecting rod, one end of the first connecting rod is hinged to the inner wall of the abutting block, and the other end of the first connecting rod is hinged to the outer wall of the moving rod. The abutting block is arranged in the mounting hole of the detection plate of the circuit board test fixture, the hole wall of the mounting hole is abutted against the multiple abutting blocks in the open position, and the fixing of the detection plate and the lifting rod is realized. In this way, the detection plate can be conveniently and quickly disassembled and replaced, so as to adapt to the test requirements of different circuit boards.

Description

Technical Field

[0001] This application relates to the field of circuit board testing technology, and more particularly to circuit board testing fixtures. Background Technology

[0002] Before being assembled into a device, circuit boards need to be tested to verify their performance and to troubleshoot faults such as short circuits, open circuits, and incorrect component placement. Circuit board testing is usually performed using circuit board test fixtures.

[0003] In related technologies, it is often difficult to replace the test board used to interface with the circuit board to perform circuit board testing, which makes the circuit board test fixtures limited in the types of circuit boards they can test and has poor versatility. Summary of the Invention

[0004] This application provides a circuit board test fixture to at least solve the problem that circuit board test fixtures in related technologies can only detect a limited number of circuit boards.

[0005] This application provides a circuit board test fixture, which includes a base, a bracket, a lifting rod, an electric push rod, a moving rod, a first connecting rod, an abutment block, and a test plate.

[0006] The bracket is fixedly mounted on the base.

[0007] The lifting rod is mounted on the bracket in a height-adjustable manner. The fixed part of the electric push rod is fixedly connected to the lifting rod, and the moving rod is fixedly connected to the drive part of the electric push rod. The moving rod and the lifting rod are coaxially arranged.

[0008] The abutment block is slidably connected to the lifting rod. The abutment block can slide along the radial direction of the lifting rod between an open position away from the axis of the lifting rod and a closed position close to the axis of the lifting rod. The abutment block is located on the outside of the moving rod. The abutment block is connected to the moving rod through a first connecting rod. One end of the first connecting rod is hinged to the inner wall of the abutment block, and the other end of the first connecting rod is hinged to the outer wall of the moving rod.

[0009] An electric push rod is used to drive the moving rod to move axially along the lifting rod, so as to drive the abutment block to slide between the open and closed positions via the first link.

[0010] The detection plate has mounting holes, and the lifting rod is provided with multiple abutment blocks that are centrally symmetrical with respect to the axis of the lifting rod. The abutment blocks pass through the mounting holes, and the hole wall of the mounting holes abuts against the multiple abutment blocks in the open position to fix the detection plate and the lifting rod.

[0011] This application provides an electric push rod as the power source for moving the abutment block between the open and closed positions. It provides a stable driving force to the abutment block and can self-lock after the abutment block slides to the target position. When the electric push rod drives the moving rod to move axially along the lifting rod, the first connecting rod can rotate relative to the moving rod and the connected abutment block, converting the axial movement of the moving rod along the lifting rod into radial movement of the abutment block along the lifting rod. This allows the abutment block to slide between the open and closed positions via the first connecting rod. When the abutment block slides from the open position to the closed position, the fixing of the detection plate to the lifting rod can be released, facilitating the removal of the detection plate from the lifting rod. When the abutment block, which passes through the mounting hole, slides from the closed position to the open position, it can firmly abut against the wall of the mounting hole, thus fixing the detection plate to the lifting rod. In this way, the test board can be easily and quickly disassembled and replaced to adapt to the testing needs of different circuit boards. This helps to improve the versatility and efficiency of the circuit board test fixture, shortens the time required to adjust the circuit board test fixture after a circuit board is changed, and reduces downtime costs caused by adjusting the circuit board test fixture. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of a circuit board test fixture provided in an embodiment of this application;

[0014] Figure 2 for Figure 1 A schematic diagram of the circuit board test fixture provided in the diagram at the lifting rod;

[0015] Figure 3 for Figure 1 Another schematic diagram of the circuit board test fixture provided in the diagram at the lifting rod;

[0016] Figure 4 for Figure 3 Enlarged view of part A in the image;

[0017] Figure 5 for Figure 3 Enlarged view of part B in the image;

[0018] Figure 6 for Figure 1 A schematic diagram of the circuit board test fixture provided in the diagram at the base;

[0019] Figure 7A schematic diagram of a detachable connection component provided in an embodiment of this application;

[0020] Figure 8 for Figure 7 Enlarged view of section C in the image.

[0021] The above figures include the following reference numerals:

[0022] 10. Base; 11. Seat body; 12. Base plate;

[0023] 20. Bracket; 30. Lifting rod; 40. Electric push rod; 50. Detection plate; 60. Positioning plate;

[0024] 110. Moving rod; 120. First connecting rod; 130. Abutment block; 140. Sliding rod; 150. First connecting block; 160. Second connecting block; 170. Guide sleeve;

[0025] 210. Positioning push rod; 220. Moving column; 230. Rotating block; 240. Second connecting rod; 250. Starting block; 260. Return spring;

[0026] 300. Detachable connecting assembly; 310. Mounting block; 320. Fixing block; 330. Lead screw; 340. Rotating disk; 350. Trapezoidal block; 361. First slider; 362. Second slider; 371. First clamping element; 372. Second clamping element; 381. Ratchet; 382. Pawl; 383. Spring; 390. Support rod;

[0027] H. Mounting holes;

[0028] G1, First guide groove; G2, Slide groove; G3, Second guide groove;

[0029] N1, First socket; N2, Second socket; N3, Clearance socket. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0031] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," 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 application 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 application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] This application provides a circuit board test fixture that can test circuit boards to verify their performance and troubleshoot faults such as short circuits, open circuits, and incorrect component mounting.

[0034] Figure 1 This is a schematic diagram of a circuit board test fixture provided in an embodiment of this application.

[0035] like Figure 1 As shown, the circuit board test fixture includes a base 10, a bracket 20, a lifting rod 30, a test plate 50, and a positioning plate 60. The bracket 20 is fixedly mounted on the base 10, the lifting rod 30 is mounted on the bracket 20 in a height-adjustable manner, the test plate 50 is fixedly mounted on the lifting rod 30, and the positioning plate 60 is fixedly mounted on the base 10.

[0036] The base 10 supports the bracket 20, positioning plate 60, lifting rod 30, detection plate 50, circuit board, and other components mounted on it, providing a platform for circuit board testing. The positioning plate 60 is used to place and position the circuit board, ensuring it is in the correct position to improve testing accuracy. The bracket 20 provides a stable mounting base for the lifting rod 30, supporting it so that it can be positioned above the base 10, facilitating the docking of the detection plate 50 mounted on the lifting rod 30 with the circuit board. The lifting rod 30 moves the detection plate 50 up and down to adjust its height, adapting to different testing requirements. The detection plate 50 docks with the circuit board and is used for testing it.

[0037] When testing a circuit board, the test board 50 is connected to the circuit board to establish an electrical connection. The test board 50 can transmit test signals from the test instrument to the circuit board and collect feedback signals from the circuit board. The test instrument can verify the performance of the circuit board based on the feedback signals from the circuit board and determine whether there are faults such as short circuits, open circuits, or incorrect component mounting, so as to realize the testing of the circuit board.

[0038] For example, the bracket 20 and the positioning plate 60 are fixedly installed on the top surface of the base 10, the lifting rod 30 is vertically installed, the lifting rod 30 is installed on the front side of the bracket 20, the lifting rod 30 and the detection plate 50 are spaced apart above the base 10, and the positioning plate 60 and the detection plate 50 are vertically opposite each other.

[0039] For example, the base 10 includes a seat body 11 and a base plate 12, with the base plate 12 located at the bottom end of the base 10. The bracket 20 and the positioning plate 60 are fixedly disposed on the top surface of the seat body 11, and the lifting rod 30 and the detection plate 50 are spaced apart above the seat body 11. The base plate 12 is used to increase the contact area between the circuit board test fixture and the bearing surface, so that the circuit board test fixture is placed more stably on the bearing surface, making it less likely to tip over during operation.

[0040] The arrangement of components on different circuit boards is often different. For circuit boards with different component arrangements, different test boards are often required for testing.

[0041] In related technologies, the testing board is often mounted on the lifting rod in a non-removable manner. Disassembling the testing board from the lifting rod is often difficult, making board replacement challenging. This results in a limited range of circuit boards that the circuit board testing fixture can test, and poor versatility. This limited range and poor versatility leads to insufficient flexibility in circuit board production. It makes it difficult to quickly adapt to product iterations or multi-model production needs, requiring additional investment in new testing fixtures, increasing equipment downtime and financial pressure. Furthermore, it limits the multi-product compatibility of the production line, prolongs changeover and debugging time, and reduces overall production efficiency.

[0042] Figure 2 for Figure 1 A schematic diagram of the circuit board test fixture provided in the diagram at the lifting rod. Figure 3 for Figure 1 Another schematic diagram of the circuit board test fixture provided in the diagram at the lifting rod. Figure 4 for Figure 3 Enlarged view of part A in the image. Figure 5 for Figure 3 Enlarged view of part B in the image.

[0043] Based on this, in the embodiments of this application, such as Figure 1 As shown, the detection plate 50 has a mounting hole H, which is used to fix the detection plate 50 to the lifting rod 30.

[0044] For example, the mounting hole H can extend through both sides of the detection plate 50 in the thickness direction.

[0045] like Figure 2 As shown in this embodiment, the circuit board test fixture further includes abutment blocks 130. Multiple abutment blocks 130 are centrally symmetrical about the axis of the lifting rod 30. The abutment blocks 130 are slidably connected to the lifting rod 30 and can slide along the radial direction of the lifting rod 30 between an open position away from the axis of the lifting rod 30 and a closed position close to the axis of the lifting rod 30. The abutment blocks 130 pass through the mounting hole H, and the wall of the mounting hole H abuts against the multiple abutment blocks 130 in the open position to fix the test board 50 to the lifting rod 30.

[0046] like Figure 3 , Figure 4 As shown, the circuit board test fixture also includes an electric push rod 40, a moving rod 110, and a first connecting rod 120. The fixed part of the electric push rod 40 is fixedly connected to the lifting rod 30, and the moving rod 110 is fixedly connected to the driving part of the electric push rod 40. The moving rod 110 and the lifting rod 30 are coaxially arranged.

[0047] The abutment block 130 is located on the outside of the moving rod 110. The abutment block 130 is connected to the moving rod 110 through the first connecting rod 120. One end of the first connecting rod 120 is hinged to the inner wall of the abutment block 130, and the other end of the first connecting rod 120 is hinged to the outer wall of the moving rod 110.

[0048] The electric push rod 40 is used to drive the moving rod 110 to move axially along the lifting rod 30, so as to drive the abutment block 130 to slide between the open position and the closed position via the first connecting rod 120.

[0049] Thus, the electric push rod 40, acting as the power source for moving the abutment block 130 between the open and closed positions, provides a stable driving force for the abutment block 130 and can self-lock after the abutment block 130 slides to the target position. When the electric push rod 40 drives the moving rod 110 to move axially along the lifting rod 30, the first connecting rod 120 can rotate relative to the moving rod 110 and the connected abutment block 130, converting the axial movement of the moving rod 110 along the lifting rod 30 into radial movement of the abutment block 130 along the lifting rod 30. This allows the abutment block 130 to slide between the open and closed positions via the first connecting rod 120. When the abutment block 130 slides from the open position to the closed position, the fixing of the detection plate 50 to the lifting rod 30 can be released, facilitating the removal of the detection plate 50 from the lifting rod 30. When the abutment block 130, which passes through the mounting hole H, slides from the closed position to the open position, it can firmly abut against the wall of the mounting hole H to fix the test plate 50 and the lifting rod 30. This allows for convenient and quick disassembly and replacement of the test plate 50 to adapt to the testing needs of different circuit boards, improving the versatility and efficiency of the circuit board test fixture, shortening the time required to adjust the circuit board test fixture after a circuit board change, and reducing downtime costs caused by adjusting the circuit board test fixture.

[0050] For example, when the abutment block 130 is in the closed position, the distance between the outer wall of the abutment block 130 and the axis of the lifting rod 30 is less than the radius of the mounting hole H. The abutment block 130, which passes through the mounting hole H, has a gap between itself and the hole wall of the mounting hole H, so as to release the fixation between the detection plate 50 and the lifting rod 30, and to facilitate the installation of the detection plate 50 by passing the abutment block 130 through the mounting hole H.

[0051] For example, the lifting rod 30 is provided with four abutment blocks 130 that are centrally symmetrical with respect to the axis of the lifting rod 30, and the four abutment blocks 130 are spaced apart along the circumference of the lifting rod 30.

[0052] For example, the electric push rod 40 may be located at the lower end of the lifting rod 30, and at least a portion of the moving rod 110 may be located below the lifting rod 30.

[0053] For example, each abutment block 130 is connected to the moving rod 110 via at least one first link 120.

[0054] For example, each abutment block 130 is connected to the moving rod 110 via a plurality of first connecting rods 120 arranged along the axial direction of the moving rod 110, making the radial movement of the abutment block 130 driven by the moving rod 110 more stable and preventing the abutment block 130 from deflecting. The plurality of first connecting rods 120 connected to the same abutment block 130 are parallel to each other.

[0055] In some possible implementations, a first connecting block 150 is fixedly connected to the outer peripheral wall of the moving rod 110, a second connecting block 160 is fixedly connected to the inner peripheral wall of the abutment block 130, one end of the first connecting rod 120 is hinged to the first connecting block 150, and the other end of the first connecting rod 120 is hinged to the second connecting block 160.

[0056] Thus, the first connecting block 150 and the second connecting block 160 provide a structural foundation for connecting the first connecting rod 120, facilitating the hinge connection between the first connecting rod 120 and the moving rod 110 and the abutment block 130. This facilitates the conversion of the axial force along the lifting rod 30 into a radial force along the lifting rod 30, thereby driving the abutment block 130 radially along the lifting rod 30. Furthermore, by providing the first connecting block 150 and the second connecting block 160 for hinge connection of the first connecting rod 120, the rotation of the first connecting rod 120 is less likely to interfere with the moving rod 110 and the abutment block 130, which is beneficial for the stable and reliable transmission of driving force.

[0057] The first connecting block 150 protrudes from the outer peripheral wall of the moving rod 110. The second connecting block 160 protrudes from the inner peripheral wall of the abutment block 130.

[0058] In some possible implementations, the circuit board test fixture also includes a guide sleeve 170, which is coaxially arranged with the lifting rod 30 and fixedly connected to it.

[0059] The moving rod 110 passes through the guide sleeve 170 and slides with the guide sleeve 170. The peripheral wall of the guide sleeve 170 has a first guide groove G1 extending along the axial direction of the guide sleeve 170. The first connecting block 150 passes through the first guide groove G1 and slides with the groove wall of the first guide groove G1.

[0060] Thus, the guide sleeve 170 can guide and limit the movement of the moving rod 110. The guide sleeve 170 guides the moving rod 110 to move axially along the lifting rod 30, making it less prone to deviation and facilitating a stable and reliable drive of the moving rod 110 on the abutment block 130. Furthermore, the first guide groove G1 avoids the connecting parts between the moving rod 110 and the abutment block 130, preventing the guide sleeve 170 from interfering with the connection and transmission between the abutment block 130 and the moving rod 110. Additionally, the sliding fit between the first guide groove G1 and the first connecting block 150 also guides and limits the rotation of the moving rod 110. The first guide groove G1 guides the first connecting block 150 to move axially along the lifting rod 30, thereby guiding the movement of the moving rod 110 and facilitating a stable and reliable drive of the moving rod 110 on the abutment block 130.

[0061] For example, the top end of the guide sleeve 170 is fixedly connected to the bottom end of the lifting rod 30, making the connection structure between the guide sleeve 170 and the lifting rod 30 relatively simple.

[0062] For example, the first guide groove G1 may extend through the top end of the guide sleeve 170 to facilitate the assembly of the guide sleeve 170.

[0063] For example, the first link 120, the second connecting block 160, and the abutment block 130 are located outside the guide sleeve 170.

[0064] In some possible embodiments, the abutment block 130 is located on the side of the lifting rod 30 along its axial direction. The end face of the lifting rod 30 near the abutment block 130 has a groove G2, which extends radially along the lifting rod 30. A slide rod 140 is inserted in the groove G2 and slides in slidable engagement with the groove wall of the groove G2. The abutment block 130 is fixedly connected to the slide rod 140 so as to slide between the lifting rod 30 and the slide rod 140.

[0065] In this way, the abutment block 130 is located to the side of the lifting rod 30, making its placement convenient and flexible. The movements of the abutment block 130, the moving rod 110, and the first connecting rod 120 are less likely to interfere with the lifting rod 30, facilitating the transmission connection between the abutment block 130 and the moving rod 110. By providing the sliding rod 140 and the sliding groove G2, the abutment block 130 located to the side of the lifting rod 30 can be slidably connected to the lifting rod 30.

[0066] The groove G2 is used to guide the slide bar 140 to slide radially along the lifting rod 30, so as to limit the movement trajectory of the abutment block 130.

[0067] For example, the abutment block 130 is located below the lifting rod 30.

[0068] For example, the slide bar 140 is set vertically.

[0069] For example, the bottom end of the slide bar 140 is fixedly connected to the top end of the abutment block 130.

[0070] For example, the end face of the lifting rod 30 has a plurality of sliding grooves G2 corresponding one-to-one with the abutment block 130. The plurality of sliding grooves G2 are spaced apart along the circumference of the lifting rod 30. The abutment block 130 is fixedly connected to the sliding rod 140 passing through the corresponding sliding groove G2, so as to slide the lifting rod 30 through the sliding rod 140 passing through the corresponding sliding groove G2 and the corresponding sliding groove G2.

[0071] In some possible implementations, the fixing part of the electric push rod 40 is embedded in the lifting rod 30.

[0072] This facilitates the stable installation of the fixed part of the electric push rod 40 and the lifting rod 30, making it less likely for the electric push rod 40 to shift during operation and ensuring the stability of the power transmission provided by the electric push rod 40.

[0073] For example, the lifting rod 30 has a mounting groove, the fixing part of the electric push rod 40 is mounted in the mounting groove, the mounting groove is connected to the lower space of the lifting rod 30, and at least part of the driving part of the electric push rod 40 is located below the lifting rod 30.

[0074] For example, the drive unit of the electric push rod 40 can be located outside the lifting rod 30, so that the operation of the drive unit of the electric push rod 40 is not easily interfered with by the lifting rod 30.

[0075] For example, the slide G2 is located outside the electric push rod 40.

[0076] In some possible implementations, such as Figure 2 , Figure 3 As shown, the circuit board test fixture also includes a positioning push rod 210, which is slidably connected to the lifting rod 30. The positioning push rod 210 can slide along the axial direction of the lifting rod 30 between an initial position close to the abutment block 130 and a final position away from the abutment block 130. The positioning push rod 210 protrudes from the outer peripheral wall of the lifting rod 30.

[0077] like Figure 5 As shown, the circuit board test fixture also includes a moving column 220, a rotating block 230, a second connecting rod 240, and a starting block 250.

[0078] The movable column 220 and the rotating block 230 are movably disposed within the lifting rod 30. The movable column 220 has a first socket N1, and the fixed part of the electric push rod 40 has a second socket N2. The second socket N2 contains a starting device for controlling the start of the electric push rod 40.

[0079] The movable column 220 is fixedly connected to the positioning push rod 210, the rotating block 230 is rotatably connected to the lifting rod 30, one end of the rotating block 230 is inserted into the first socket N1, the other end of the rotating block 230 is hinged to one end of the second connecting rod 240, the other end of the second connecting rod 240 is hinged to one end of the starting block 250, the other end of the starting block 250 is inserted into the second socket N2 and rotatably connected to the fixed part of the electric push rod 40.

[0080] The positioning push rod 210 is used to abut against the side of the detection plate 50 and can slide from the initial position to the final position under the push of the detection plate 50.

[0081] The positioning push rod 210, which slides from the initial position to the final position, is used to drive the starting block 250 to rotate to the position of triggering the starting device via the moving column 220, the rotating block 230, and the second connecting rod 240, so that the electric push rod 40 is activated and drives the abutment block 130 to slide from the closed position to the open position.

[0082] Thus, during installation, the positioning push rod 210 abuts against the side of the detection plate 50, and can slide from the initial position to the final position under the push of the detection plate 50. During the sliding process from the initial position to the final position, the moving column 220 moves away from the abutment block 130 along the axial direction of the lifting rod 30, following the positioning push rod 210. The portion of the rotating block 230 inserted into the first socket N1 contacts the side of the first socket N1 closest to the abutment block 130. The moving column 220 applies force to the portion of the rotating block 230 inserted into the first socket N1, thereby driving the rotating block 230 to rotate. The rotating block 230 drives the second connecting rod 240 to move, and the moving second connecting rod 240 drives the starting block 250 to move, thus triggering the starting device. This allows the positioning push rod 210 to be pushed to the final position via the detection plate 50, controlling the start of the electric push rod 40 and driving the abutment block 130 to slide from the closed position to the open position. This facilitates accurate positioning of the test board 50, ensuring its placement and preventing issues such as insufficient testing accuracy or component interference damage due to installation deviations. Furthermore, it enables synchronized control of the installation process, reducing the risk of component damage or circuit malfunctions caused by accidental activation of the electric push rod 40 when the test board 50 is not in position. This results in improved stability and reliability of the circuit board test fixture.

[0083] For example, both ends of the positioning push rod 210 protrude from the outer peripheral wall of the lifting rod 30.

[0084] For example, the abutment block 130 is located below the positioning push rod 210, and its initial position is below the position. When the detection plate 50 is installed, the detection plate 50 is sleeved on the outside of the abutment block 130 from bottom to top. After the detection plate 50 contacts the lower side of the positioning push rod 210, it pushes the positioning push rod 210 upward to the position. During the upward movement of the positioning push rod 210, the moving column 220 moves upward, and the part of the rotating block 230 inserted into the first socket N1 contacts the lower side of the first socket N1, thereby causing the rotating block 230 to rotate and the second connecting rod 240 to move downward, so that the starting block 250 rotates to the position of triggering the starting device.

[0085] For example, the second link 240 and the starter are both located inside the lifting rod 30.

[0086] In some possible implementations, the lifting rod 30 has a second guide groove G3 extending along the axial direction of the lifting rod 30, the moving column 220 is disposed in the second guide groove G3 and slides in cooperation with the groove wall of the second guide groove G3, and the positioning push rod 210 is slidably connected to the lifting rod 30 through the moving column 220.

[0087] This facilitates stable and reliable sliding of the positioning push rod 210 along the axial direction of the lifting rod 30. The sliding connection between the positioning push rod 210 and the lifting rod 30 reuses the moving column 220 for transmitting force, resulting in a simple and reliable structure.

[0088] In some possible implementations, the movable column 220 passes through the positioning push rod 210, and a return spring 260 is provided between the end of the movable column 220 away from the abutment block 130 and the lifting rod 30. The return spring 260 is used to provide a force to return the positioning push rod 210, which is in the position, to the initial position.

[0089] Thus, by setting the return spring 260, the positioning push rod 210 can be smoothly returned to its initial position after the detection plate 50 is removed, which facilitates the subsequent installation of the detection plate 50. In addition, the return spring 260 applies a force to the moving column 220, which is less likely to deviate, and facilitates the stable and reliable sliding of the moving column 220 and the positioning push rod 210 along the axial direction of the lifting rod 30.

[0090] During the sliding process of the positioning push rod 210 from the initial position to the final position, the return spring 260 undergoes elastic deformation to generate an elastic force for returning the positioning push rod 210, which is located in the final position, to the initial position.

[0091] For example, the return spring 260 is located inside the lifting rod 30, which helps the return spring 260 generate stable elastic potential energy.

[0092] For example, the return spring 260 is located at the top of the moving column 220. During the process of the positioning push rod 210 sliding from the initial position to the final position, the moving column 220 moves upward and squeezes the return spring 260, causing the return spring 260 to compress. After the detection plate 50 is removed, the elastic force generated by the return spring 260 drives the moving column 220 to move downward, so that the positioning push rod 210 returns to the initial position.

[0093] Figure 6 for Figure 1 A schematic diagram of the circuit board test fixture provided in the diagram, located at the base. Figure 7 This is a schematic diagram of a detachable connection component provided in an embodiment of this application. Figure 8 for Figure 7 Enlarged view of section C in the image.

[0094] like Figure 6 As shown, in some possible implementations, the circuit board test fixture also includes a detachable connection assembly 300, through which the base plate 12 and the seat 11 are detachably connected.

[0095] like Figure 7 , Figure 8 As shown, the detachable connection assembly 300 includes a mounting block 310, a fixing block 320, a lead screw 330, a rotating disk 340, a support rod 390, a trapezoidal block 350, a first slider 361, a second slider 362, a first clamping member 371, a second clamping member 372, a ratchet 381, a pawl 382, ​​and a spring piece 383.

[0096] Mounting block 310 is fixedly connected to base plate 12.

[0097] The fixing block 320 is fixedly connected to the base 11. The support rod 390 is fixedly connected to the fixing block 320. The lead screw 330 is perpendicular to the support rod 390 and is rotatably connected to the support rod 390. The ratchet 381 and the rotating disk 340 are coaxially connected to the lead screw 330. The rotating disk 340, ratchet 381 and lead screw 330 rotate synchronously. The first slider 361 and the second slider 362 are arranged along the axial direction of the support rod 390. The first slider 361 and the second slider 362 are slidably connected to the support rod 390. The first slider 361 and the second slider 362 can slide relative to the support rod 390 along the axial direction of the support rod 390. The first clamping member 371 is fixedly connected to the first slider 361 and the second clamping member 372 is fixedly connected to the second slider 362.

[0098] A trapezoidal block 350 is disposed between the first slider 361 and the second slider 362. The trapezoidal block 350 is threadedly connected to the lead screw 330. The trapezoidal block 350 includes a first inclined surface and a second inclined surface. The first inclined surface is opposite to the first slider 361, and the second inclined surface is opposite to the second slider 362. The first slider 361 includes a third inclined surface that is opposite to and parallel to the first inclined surface. The second slider 362 includes a fourth inclined surface that is opposite to and parallel to the second inclined surface. The first inclined surface and the third inclined surface are slidably connected, and the second inclined surface and the fourth inclined surface are slidably connected.

[0099] The rotating lead screw 330 can drive the trapezoidal block 350 to move along the axial direction of the lead screw 330, thereby driving the first slider 361 and the second slider 362 to slide along the axial direction of the support rod 390 between a position close to the axis of the lead screw 330 and a position away from the axis of the lead screw 330, thereby causing the first clamping member 371 and the second clamping member 372 to move between a clamping position close to the axis of the lead screw 330 and a releasing position away from the axis of the lead screw 330.

[0100] The mounting block 310 is disposed between the first clamping member 371 and the second clamping member 372. The mounting block 310 is clamped by the first clamping member 371 and the second clamping member 372 in the clamping position to realize the detachable connection between the base plate 12 and the seat 11.

[0101] The pawl 382 is rotatably connected to the fixed block 320. A spring piece 383 is provided between the pawl 382 and the fixed block 320. The spring piece 383 presses the pawl 382 into the tooth groove of the ratchet 381.

[0102] In this way, the fixing block 320 provides an installation base for components such as the support rod 390, lead screw 330, ratchet 381, rotating disk 340, first slider 361, second slider 362, first clamping member 371, second clamping member 372, pawl 382, ​​and spring piece 383. When it is necessary to assemble or disassemble the base plate 12 on the seat 11, the rotating disk 340 can be rotated to rotate the lead screw 330. The rotating lead screw 330 drives the trapezoidal block 350 to move along the axial direction of the lead screw 330. The trapezoidal block 350 moving along the axial direction of the lead screw 330 can drive the first slider 361 and the second slider 362 to move radially along the lead screw 330, thereby driving the first clamping member 371 and the second clamping member 372 to move radially along the lead screw 330. This allows the first clamping member 371 and the second clamping member 372 to clamp or loosen the mounting block 310, thus facilitating the assembly or disassembly of the base plate 12 from the seat 11, and making it easier to maintain the components inside the seat 11. The support rod 390 is used to mount the lead screw 330 and support the lead screw 330, making the installation of the lead screw 330 more convenient. The support rod 390 also supports the first slider 361 and the second slider 362, and guides the first slider 361 and the second slider 362 to slide radially along the lead screw 330, so that the first slider 361 and the second slider 362 slide stably and reliably. The rotating disk 340 is provided for the operator to turn, so as to rotate the lead screw 330. In addition, the spring piece 383 is used to press the pawl 382 into the tooth groove of the ratchet 381, so that the pawl 382 and the ratchet 381 are in contact. Through the cooperation of the ratchet 381 and the pawl 382, ​​the lead screw 330 can be locked in one direction, so that the lead screw 330 will not rotate in the opposite direction when there is no external force, thereby releasing the first clamping member 371 and the second clamping member 372. When it is necessary to release the first clamping member 371 and the second clamping member 372, the pawl 382 can be moved first to separate the pawl 382 from the ratchet 381, and then the turntable can be rotated to make the lead screw 330 rotate in the opposite direction, so as to release the first clamping member 371 and the second clamping member 372.

[0103] For example, the lead screw 330 rotating in the forward direction is used to move the first clamping member 371 and the second clamping member 372 to the clamping position. The lead screw 330 rotating in the reverse direction is used to move the first clamping member 371 and the second clamping member 372 to the releasing position.

[0104] For example, the first slider 361, the second slider 362, the first clamping member 371 and the second clamping member 372 are all disposed within the fixed block 320. The outer walls of the first slider 361, the second slider 362, the first clamping member 371 and the second clamping member 372 are all slidably engaged with the inner wall of the fixed block 320. The fixed block 320 can guide the first slider 361, the second slider 362, the first clamping member 371 and the second clamping member 372 to slide radially along the lead screw 330, so that the sliding of the first slider 361, the second slider 362, the first clamping member 371 and the second clamping member 372 is stable and reliable.

[0105] For example, the mounting block 310 is fixedly connected to the top surface of the base plate 12.

[0106] For example, the rotating disk 340 is connected to the upper end of the lead screw 330, the ratchet 381 is located between the lead screw 330 and the trapezoidal block 350, and the lower end of the lead screw 330 is rotatably connected to the support rod 390. The distance from the lower end of the first inclined plane to the axis of the lead screw 330 is less than the distance from the upper end of the first inclined plane to the axis of the lead screw 330. The distance from the lower end of the second inclined plane to the axis of the lead screw 330 is less than the distance from the upper end of the second inclined plane to the axis of the lead screw 330.

[0107] For example, the rotating disk 340 is located above the fixed block 320.

[0108] For example, the first clamping member 371 is fixedly connected to the lower end of the first slider 361, and the second clamping member 372 is fixedly connected to the lower end of the second slider 362.

[0109] For example, the base plate 12 and the seat 11 are detachably connected by a plurality of detachable connection components 300.

[0110] like Figure 6 As shown, in some possible embodiments, the fixing block 320 is disposed inside the seat 11, the side wall of the seat 11 has a clearance opening N3, the rotating disk 340 and the pawl 382 pass through the clearance opening N3, and a portion of the rotating disk 340 and a portion of the pawl 382 are located outside the seat 11.

[0111] In this way, the fixing block 320 is located inside the base 11, which makes high space utilization. By setting the clearance N3 and placing part of the rotating disk 340 and part of the pawl 382 outside the base 11, it is convenient for the operator to operate the rotating disk 340 and the pawl 382 outside the base 11, so as to facilitate the disassembly and assembly of the base plate 12 and the base 11.

[0112] The cooling device and electronic equipment provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A circuit board testing fixture, characterized in that, It includes a base (10), a bracket (20), a lifting rod (30), an electric push rod (40), a moving rod (110), a first connecting rod (120), a contact block (130), and a detection plate (50). The bracket (20) is fixedly mounted on the base (10); The lifting rod (30) is mounted on the bracket (20) in a height-adjustable manner. The fixed part of the electric push rod (40) is fixedly connected to the lifting rod (30). The moving rod (110) is fixedly connected to the driving part of the electric push rod (40). The moving rod (110) and the lifting rod (30) are coaxially arranged. The abutment block (130) is slidably connected to the lifting rod (30). The abutment block (130) can slide along the radial direction of the lifting rod (30) between an open position away from the axis of the lifting rod (30) and a closed position close to the axis of the lifting rod (30). The abutment block (130) is located on the outside of the moving rod (110). The abutment block (130) is connected to the moving rod (110) through the first connecting rod (120). One end of the first connecting rod (120) is hinged to the inner wall of the abutment block (130), and the other end of the first connecting rod (120) is hinged to the outer wall of the moving rod (110). The electric push rod (40) is used to drive the moving rod (110) to move axially along the lifting rod (30) so as to drive the abutment block (130) to slide between the open position and the closed position via the first connecting rod (120); The detection plate (50) has a mounting hole (H), and the lifting rod (30) is provided with a plurality of abutment blocks (130) that are centrally symmetrical with respect to the axis of the lifting rod (30). The abutment blocks (130) are inserted into the mounting hole (H), and the hole wall of the mounting hole (H) abuts against the plurality of abutment blocks (130) in the open position to fix the detection plate (50) and the lifting rod (30).

2. The circuit board test fixture according to claim 1, characterized in that, The outer peripheral wall of the movable rod (110) is fixedly connected to a first connecting block (150), and the inner peripheral wall of the abutment block (130) is fixedly connected to a second connecting block (160). One end of the first connecting rod (120) is hinged to the first connecting block (150), and the other end of the first connecting rod (120) is hinged to the second connecting block (160).

3. The circuit board test fixture according to claim 2, characterized in that, It also includes a guide sleeve (170), which is coaxially arranged with the lifting rod (30) and is fixedly connected to the lifting rod (30); The moving rod (110) passes through the guide sleeve (170) and slides with the guide sleeve (170). The peripheral wall of the guide sleeve (170) has a first guide groove (G1) extending along the axial direction of the guide sleeve (170). The first connecting block (150) passes through the first guide groove (G1) and slides with the groove wall of the first guide groove (G1).

4. The circuit board test fixture according to claim 1, characterized in that, Along the axial direction of the lifting rod (30), the abutment block (130) is located on the side of the lifting rod (30); The lifting rod (30) has a groove (G2) on one end face near the abutment block (130). The groove (G2) extends radially along the lifting rod (30). A slide rod (140) is inserted in the groove (G2) and slides in slidable engagement with the groove wall of the groove (G2). The abutment block (130) is fixedly connected to the slide rod (140) so as to slide in connection with the lifting rod (30) through the slide rod (140).

5. The circuit board test fixture according to claim 1, characterized in that, The fixing part of the electric push rod (40) is embedded in the lifting rod (30).

6. The circuit board test fixture according to any one of claims 1-5, characterized in that, It also includes a positioning push rod (210), a moving column (220), a rotating block (230), a second connecting rod (240), and a starting block (250); The positioning push rod (210) is slidably connected to the lifting rod (30). The positioning push rod (210) can slide along the axial direction of the lifting rod (30) between an initial position close to the abutment block (130) and a final position away from the abutment block (130). The positioning push rod (210) protrudes from the outer peripheral wall of the lifting rod (30). The movable column (220) and the rotating block (230) are movably disposed within the lifting rod (30). The movable column (220) has a first socket (N1), and the fixed part of the electric push rod (40) has a second socket (N2). The second socket (N2) contains a starting device for controlling the start of the electric push rod (40). The movable column (220) is fixedly connected to the positioning push rod (210), the rotating block (230) is rotatably connected to the lifting rod (30), one end of the rotating block (230) is inserted into the first socket (N1), the other end of the rotating block (230) is hinged to one end of the second connecting rod (240), the other end of the second connecting rod (240) is hinged to one end of the starting block (250), the other end of the starting block (250) is inserted into the second socket (N2) and rotatably connected to the fixed part of the electric push rod (40); The positioning push rod (210) is used to abut against the side of the detection plate (50) and can slide from the initial position to the final position under the push of the detection plate (50); The positioning push rod (210), which slides from the initial position to the final position, is used to drive the starting block (250) to rotate to the position that triggers the starting device via the moving column (220), the rotating block (230) and the second connecting rod (240), so that the electric push rod (40) is activated and the abutment block (130) is driven to slide from the closing position to the opening position.

7. The circuit board test fixture according to claim 6, characterized in that, The lifting rod (30) has a second guide groove (G3) extending along the axial direction of the lifting rod (30). The moving column (220) is disposed in the second guide groove (G3) and slides with the groove wall of the second guide groove (G3). The positioning push rod (210) is slidably connected to the lifting rod (30) through the moving column (220).

8. The circuit board test fixture according to claim 6, characterized in that, The movable column (220) passes through the positioning push rod (210). A return spring (260) is provided between the end of the movable column (220) away from the abutment block (130) and the lifting rod (30). The return spring (260) is used to provide a force to return the positioning push rod (210) located in the positioning position to the initial position.

9. The circuit board test fixture according to any one of claims 1-5, characterized in that, It also includes a detachable connection component (300); The base (10) includes a seat body (11) and a base plate (12), the base plate (12) being disposed at the bottom end of the base (10); The detachable connection assembly (300) includes a mounting block (310), a fixing block (320), a lead screw (330), a rotating disk (340), a support rod (390), a trapezoidal block (350), a first slider (361), a second slider (362), a first clamping member (371), a second clamping member (372), a ratchet (381), a pawl (382), and a spring (383). The mounting block (310) is fixedly connected to the base plate (12); The fixing block (320) is fixedly connected to the seat (11), the support rod (390) is fixedly connected to the fixing block (320), the lead screw (330) is perpendicularly arranged to the support rod (390), the lead screw (330) is rotatably connected to the support rod (390), the ratchet (381) and the rotating disk (340) are coaxially connected to the lead screw (330), the rotating disk (340), the ratchet (381) and the lead screw (330) rotate synchronously, and the first slider (361) The first slider (361) and the second slider (362) are arranged along the axial direction of the support rod (390). The first slider (361) and the second slider (362) are slidably connected to the support rod (390). The first slider (361) and the second slider (362) can slide relative to the support rod (390) along the axial direction of the support rod (390). The first clamping member (371) is fixedly connected to the first slider (361), and the second clamping member (372) is fixedly connected to the second slider (362). The trapezoidal block (350) is disposed between the first slider (361) and the second slider (362). The trapezoidal block (350) is threadedly connected to the lead screw (330). The trapezoidal block (350) includes a first inclined surface and a second inclined surface. The first inclined surface is opposite to the first slider (361), and the second inclined surface is opposite to the second slider (362). The first slider (361) includes a third inclined surface that is opposite to and parallel to the first inclined surface. The second slider (362) includes a fourth inclined surface that is opposite to and parallel to the second inclined surface. The first inclined surface is slidably connected to the third inclined surface, and the second inclined surface is slidably connected to the fourth inclined surface. The rotating lead screw (330) can drive the trapezoidal block (350) to move along the axial direction of the lead screw (330), thereby driving the first slider (361) and the second slider (362) to slide along the axial direction of the support rod (390) between a position close to the axis of the lead screw (330) and a position away from the axis of the lead screw (330), thereby causing the first clamping member (371) and the second clamping member (372) to move between a clamping position close to the axis of the lead screw (330) and a releasing position away from the axis of the lead screw (330); The mounting block (310) is disposed between the first clamping member (371) and the second clamping member (372). The mounting block (310) is clamped by the first clamping member (371) and the second clamping member (372) in the clamping position to realize the detachable connection between the base plate (12) and the seat (11). The pawl (382) is rotatably connected to the fixing block (320), and the spring piece (383) is provided between the pawl (382) and the fixing block (320). The spring piece (383) presses the pawl (382) into the tooth groove of the ratchet (381).

10. The circuit board test fixture according to claim 9, characterized in that, The fixing block (320) is located inside the seat (11). The side wall of the seat (11) has a clearance opening (N3). The rotating disk (340) and the pawl (382) pass through the clearance opening (N3). A portion of the rotating disk (340) and a portion of the pawl (382) are located outside the seat (11).

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