Positioning clamp and testing device

Abstract

The utility model provides a positioning clamp and a testing device, the positioning clamp comprises a pressing seat and a positioning seat, and the pressing seat comprises a mounting seat and a turning cover. The pressing seat of the positioning clamp can be rotationally connected with the positioning seat through the turning cover, so that the positioning clamp can be switched between a folding state and an opening state. Moreover, the mounting base can move relative to the flip cover in the first direction, so that the mounting base can be switched between a first position and a second position relative to the flip cover. The movement mode that the positioning clamp rotates first and then moves enables the movement path of the pressing seat to be reduced, and when the positioning clamp is applied to the testing device, the length of the first flexible circuit board in the testing device can be reduced, impedance is effectively reduced, and the error testing rate is reduced. Moreover, the rotation motion mode reduces the pulling of the first flexible circuit board, effectively improves the service life of the testing device, and improves the detection efficiency of the testing device.

Description

Technical Field

[0001] The present application relates to the field of detection, and in particular to a positioning fixture and a testing device. Background Art

[0002] Each electronic device in the electronic device (for example, a display screen, a camera, a battery, a speaker, etc.) is communicated with the processor on the circuit board (for example, a main board) via a flexible circuit board (for example, an FPC circuit board). In order to ensure the yield rate of the electronic device, each electronic device in the electronic device needs to be tested for yield by a test device before assembly. The test device generally includes a positioning fixture, a test piece arranged in the positioning fixture, and a printed circuit board electrically connected to the test piece through a first flexible circuit board. The test piece tested by the test device generally includes a second flexible circuit board, one end of the second flexible circuit board is electrically connected to the electronic device under test (for example, a display screen, a camera, a battery, a speaker, etc.) of the electronic device, and the other end is provided with a connection module for connecting to other electronic devices (for example, a main board) of the electronic device.

[0003] In the prior art, the positioning fixture usually includes a positioning seat and a pressing seat that are independently arranged from each other. The test piece is arranged in the pressing seat, and the other end of the second flexible circuit board of the tested piece (or it can be understood that it is an end provided with a connection module) is arranged in the positioning seat. When the test device is testing, the pressing seat of the positioning fixture first moves in the horizontal direction, so that the test piece in the pressing seat and the connection module in the positioning seat are aligned in the vertical direction; then the pressing seat moves in the vertical direction again, so that the test piece contacts the connection module and the electrical connection is turned on, thereby making the electronic device under test electrically connected and communicated with the printed circuit board, and a series of tests are performed on the tested piece through the test device. For example, whether the various functions of the electronic device under test can operate normally, whether the second flexible circuit board and the connection module have problems such as short circuit and open circuit. After the test device has completed the test, the pressing seat first moves vertically and then moves horizontally, and the tested piece can be taken out after the test.

[0004] However, the motion of the hold-down seat in the positioning fixture results in a long travel range, which increases the required length of the first flexible printed circuit board, thereby increasing the test impedance and the false detection rate. Furthermore, the hold-down seat's motion frequently pulls on the first flexible printed circuit board, making it susceptible to damage and requiring frequent replacement, significantly impacting the lifespan of the test device and test efficiency.

[0005] It can be seen that the pressing seat of the positioning fixture in the prior art has a large movement stroke, the required length of the first flexible circuit board is increased, and the test impedance is increased; and the first flexible circuit board will be frequently pulled, resulting in an increased error rate of the test device, a reduced lifespan, and a decrease in test efficiency. Utility Model Content

[0006] The embodiments of the present application provide a positioning fixture and a testing device, which solve the problems in the prior art where the pressing seat of the positioning fixture has a large movement stroke, the required length of the first flexible circuit board is increased, and the test impedance is increased; and the first flexible circuit board is frequently pulled, resulting in an increased error rate of the testing device, a reduced lifespan, and reduced test efficiency.

[0007] A first aspect of an embodiment of the present application provides a positioning fixture comprising a positioning seat and a pressing seat. The pressing seat comprises a mounting seat and a flap connected in a first direction. The mounting seat is movable relative to the flap in the first direction so as to switch the mounting seat between a first position and a second position relative to the flap. The pressing seat is rotatably connected to the positioning seat via the flap, allowing the positioning fixture to switch between a folded state and an open state. When the positioning fixture is in the folded state, the pressing seat and the positioning seat are stacked in the first direction.

[0008] The positioning seat is provided with a guide portion and a first positioning portion for placing the first docking piece, and the mounting seat of the pressing seat is provided with a guided portion corresponding to the guide portion and a second positioning portion for placing the second docking piece.

[0009] Furthermore, when the positioning fixture is in a folded state and the mounting seat is in a first position relative to the flip cover, the guiding portion and the guided portion are separated from each other in the first direction, and the second docking piece placed on the mounting seat and the first docking piece placed on the positioning seat are separated from each other in the first direction.

[0010] When the positioning fixture is in a folded state and the mounting seat switches from a first position to a second position relative to the flip cover, the mounting seat moves in a first direction toward the flip cover, and the guiding portion cooperates with the corresponding guided portion until the second docking piece placed on the mounting seat docks with the first docking piece placed on the positioning seat.

[0011] The clamping seat of the positioning fixture in the present application can be rotatably connected to the positioning seat via a flip cover, so that the positioning fixture can be switched between a folded state and an open state. In addition, when the positioning fixture is in a folded state, the mounting seat can be moved relative to the flip cover along a first direction, so that the mounting seat can be switched between a first position and a second position relative to the flip cover. The movement mode of the positioning fixture, which rotates first and then moves, reduces the movement path of the clamping seat. When the positioning fixture is applied to a test device, it can reduce the length of the first flexible circuit board in the test device, effectively reduce impedance, and reduce the error rate. In addition, the rotational movement mode reduces the pulling on the first flexible circuit board, effectively improving the life of the test device and the detection efficiency.

[0012] Furthermore, when the mounting seat is in the first position, the second docking member (for example, the test member) and the first docking member (for example, the connection module of the tested member) are separated from each other in the first direction. The second docking member is docked with the first docking member only after the mounting seat is moved to the second position along the first direction. This allows the docking terminals of the second docking member to dock with the docking terminals of the first docking member at the same time, thereby avoiding damage to the second docking member and the first docking member due to some of the docking terminals docking first during the rotation process, and also ensures that all the docking terminals of the second docking member are vertically pressed down to dock with the first docking member. Among them, vertical pressing can be understood as pressing down in a direction perpendicular to the docking surface of the positioning seat, and the docking surface of the positioning seat is: when the positioning fixture is in a folded state, the surface of the positioning seat that docks with the flip cover of the pressing seat.

[0013] Therefore, the positioning fixture provided in the embodiment of the present application adopts a movement mode of first rotating and then moving, which reduces the movement path of the clamping seat and reduces the pulling on the first flexible circuit board. The docking terminal of the second docking part can be docked with the docking terminal of the first docking part at the same time, solving the problem in the prior art that the clamping seat of the positioning fixture has a large movement stroke, the required length of the first flexible circuit board is increased, and the test impedance is increased; and, it will cause frequent pulling on the first flexible circuit board, resulting in an increased error rate of the test device, a reduced lifespan, and reduced test efficiency.

[0014] In one possible implementation, the mounting base includes a fixed block and a positioning block. The positioning block is connected to a side of the fixed block proximal to the flip cover in a first direction and is movable relative to the fixed block in the first direction. The mounting base is connected to the flip cover via the fixed block, and the flip cover is provided with a first hollow portion along the first direction for the positioning block to pass through.

[0015] The second positioning portion includes: a sub-positioning portion 1 provided on the fixing block, and a sub-positioning portion 2 provided on the positioning block, and the guided portion is provided on the positioning block.

[0016] When the positioning fixture is in the folded state and the mounting seat is located at the first position relative to the flip cover, the positioning block and the positioning seat are separated from each other in the first direction.

[0017] When the positioning fixture is in a folded state and the mounting seat is in a third position between the first position and the second position relative to the flip cover, the positioning block is connected to the positioning seat through the first hollow portion of the flip cover, the guiding portion is plugged into the guided portion, and the second docking piece placed on the mounting seat and the first docking piece placed on the positioning seat are separated from each other in the first direction.

[0018] When the positioning fixture is in the folded state and the mounting seat switches from the third position to the second position relative to the flip cover, the fixing block moves in the first direction relative to the positioning block toward the positioning seat until the second docking piece docks with the first docking piece.

[0019] With the above solution, when the positioning fixture is in the folded state and the mounting base moves from the first position to the second position along the first direction, the mounting base first moves as a whole to a position where the positioning block connects with the positioning base through the first hollow portion of the flip cover (or can be understood as the third position), and the guiding portion is plugged into the guided portion. The mounting base continues to move in the first direction, the positioning block and the positioning base remain stationary, and only the fixed block moves relative to the positioning block in the first direction until the second docking member docks with the first docking member (or can be understood as the second position). This effectively improves the docking accuracy of the second docking member and the first docking member.

[0020] In a possible implementation, the sub-positioning portion 1 is configured as a mounting groove extending along the first direction, and a second hollow portion is formed at the bottom of the mounting groove, wherein the mounting groove of the fixing block is used to place the second docking member.

[0021] The second sub-positioning portion is configured as a first groove, which is recessed from the top surface of the positioning block toward the bottom surface along the first direction. A boss is provided on the bottom surface of the positioning block, and a second groove is provided on the surface of the boss facing away from the positioning block. A through hole is provided on the bottom surface of the first groove, extending to the bottom surface of the second groove. The through hole is configured to allow the mating terminal of the second mating component in the mounting slot to pass through.

[0022] When the positioning fixture is in the open state, or when the positioning fixture is in the folded state and the mounting base is in the first position relative to the flip cover, the end surface of the docking terminal of the second docking member in the mounting groove is located within the through hole of the positioning block. When the mounting base is in the second position relative to the flip cover, the end surface of the docking terminal of the second docking member in the mounting groove is located outside the through hole of the positioning block and extends into the second groove.

[0023] With this solution, when the mounting seat is in the second position relative to the flip cover, the docking terminal of the second docking member in the mounting groove sequentially passes through the second hollow portion, the first groove, and the through-hole on the bottom surface of the first groove to the second groove, allowing docking with the first docking member in the folded state. Furthermore, when the positioning fixture is in the open position and the mounting seat is in the first position, the end face of the docking terminal of the second docking member in the mounting groove is located within the through-hole of the positioning block. This effectively prevents damage to the docking terminal of the second docking member due to external uncertainties when the positioning fixture is in the open position and the mounting seat is in the first position.

[0024] In one possible implementation, the positioning fixture also includes a first connecting member, and the fixed block and the positioning block are connected through the first connecting member. The first connecting member includes a fastening part, a displacement part and a limiting part that are connected in sequence and relatively fixed. The first connecting member is fixedly connected to the fixed block through the fastening part. A first connecting hole is provided on the positioning block that passes through the positioning block in a first direction. A limited part is provided at an end of the first connecting hole away from the fixed block, and the displacement part is passed through the first connecting hole.

[0025] When the positioning fixture is in a folded state and the mounting seat is in the first position relative to the flip cover or switches from the first position to the third position, the limiting portion of the first connecting member abuts against the limited portion to limit the fixed block from moving relative to the positioning block in the first direction away from the positioning block.

[0026] When the mounting base switches from the third position to the second position relative to the flip cover, the displacement portion of the first connecting member slides relative to the first connecting hole of the positioning block, and the limiting portion and the limited portion are separated from each other.

[0027] With this solution, the fastening portion of the first connector is fixedly connected to the fixing block. During the switching process of the mounting base from the third position to the second position, the abutment between the limiting portion of the first connector and the limited portion of the positioning block is canceled, and the displacement portion of the first connector slides relative to the first connection hole of the positioning block. This effectively prevents the positioning block from falling off the first connector and effectively prevents damage to the mating terminal of the second mating member due to external uncertainties when the mounting base is in the first position or switching from the first position to the third position.

[0028] In a possible implementation, the positioning fixture further includes a first elastic member, and two ends of the first elastic member along the first direction are respectively connected to the fixing block and the positioning block.

[0029] Through such a design, it can be ensured that when the positioning clamp is in the open state, the mounting seat is in the first position relative to the flip cover or switches from the first position to the third position, the limiting portion of the first connecting member and the limited portion of the positioning block abut against each other to limit the position, so that the end face of the docking terminal of the second docking member is located in the through hole of the positioning block, effectively avoiding damage to the docking terminal of the second docking member due to external uncertain factors.

[0030] In a possible implementation, the positioning fixture further includes a second connecting member and a second elastic member, the fixed block and the flip cover are connected via the second connecting member and the second elastic member, and the second elastic member is connected to the fixed block and the flip cover at both ends along the first direction.

[0031] Among them, the second connecting member includes a fastening part, a displacement part and a limiting part that are connected in sequence and relatively fixed. The second connecting member is fixedly connected to the flip cover through the fastening part. A second connecting hole is provided on the fixed block that penetrates the fixed block along the first direction. The second connecting hole is provided with a limited part at the end away from the flip cover, and the displacement part is passed through the second connecting hole.

[0032] The limiting portion of the second connecting member is used to abut against the limited portion of the second connecting hole to limit the movement of the fixing block relative to the flip cover in the first direction away from the flip cover.

[0033] When the mounting base switches from the first position to the second position relative to the flip cover, the displacement portion of the second connecting member slides relative to the second connecting hole of the fixing block, and the limiting portion and the limited portion are separated from each other.

[0034] With this design, when the mounting seat is in the first position relative to the flip cover, the second elastic member causes the limiting portion of the second connector to abut and limit the position against the limited portion of the fixed block. When the mounting seat switches from the first position to the second position relative to the flip cover, the second elastic member deforms, causing the limiting portion and the limited portion to separate from each other, and the displacement portion of the second connector slides relative to the second connection hole of the fixed block. During the rotation of the positioning fixture, the second docking member placed on the mounting seat and the first docking member placed on the positioning seat separate from each other in the first direction, preventing damage to the second docking member and the first docking member due to some of the docking terminals docking first during rotation.

[0035] In one possible implementation, the guide portion on the positioning seat is configured as a pin hole extending in the first direction, and the guided portion on the mounting seat is configured as a columnar structure extending in the first direction. With this design, the guided portion of the columnar structure is inserted into the pin hole, effectively improving the docking accuracy between the second docking member and the first docking member.

[0036] In one possible implementation, the flip cover and the positioning seat are rotatably connected via a rotating structure. The rotating structure includes a rotating shaft frame and a connecting shaft. The rotating shaft frame is fixedly connected to the positioning seat and has a first axial hole extending in a second direction. The flip cover is provided with a protrusion, which has a second axial hole extending in the second direction. The connecting shaft passes through the first and second axial holes, thereby rotatably connecting the positioning seat and the flip cover. The second direction is the axial direction of the connecting shaft and is perpendicular to the first direction.

[0037] By adopting the above solution, the rotating shaft frame is fixedly connected to the positioning seat, and the connecting shaft is passed through the first shaft hole of the rotating shaft frame and the second shaft hole of the flip cover, so that the positioning seat and the flip cover are rotatably connected. The method of rotatably connecting the positioning seat and the flip cover is simple, which reduces production costs.

[0038] In a possible implementation, the rotating shaft frame is provided with a limiting structure. When the positioning fixture is in an open state, the limiting structure on the rotating shaft frame abuts against the flip cover.

[0039] With this design, the flip angle of the pressing seat is reduced without affecting the placement and placement of the tested piece, thereby reducing the pulling on the first flexible circuit board and improving the service life and testing efficiency of the testing device.

[0040] In one possible implementation, when the positioning fixture is in the open state, the angle between the bottom surface of the flip cover and the top surface of the positioning seat is 100° to 120°. This design reduces the pulling on the first flexible circuit board and improves the life of the test device and test efficiency.

[0041] In a possible implementation, the positioning fixture further includes a locking structure, which includes a locking portion and a locked portion. The locking portion is provided on the positioning seat, and the locked portion is provided on the flip cover.

[0042] When the positioning fixture is in an open state, the locking portion and the locked portion are unlocked and separated from each other. When the positioning fixture is in a folded state, the locking portion and the locked portion are locked to each other, so that the flip cover and the positioning seat are fixed to each other.

[0043] With such a design, the stability of the positioning fixture in the folded state is improved, thereby improving the docking accuracy of the first docking member and the second docking member.

[0044] In a possible implementation, the locking portion is a magnetic component, and the locked portion is a magnetically attracted component. When the positioning fixture is in a folded state, the magnetic component and the magnetically attracted component are attracted together.

[0045] Furthermore, at least one of the magnetic attraction component and the magnetically attracted component is made of a magnetic material. When one of the magnetic attraction component and the magnetically attracted component is made of a magnetic material, the other is made of a metal.

[0046] With this design, the locking portion and the locked portion have simple structures and are made of common materials, which can effectively reduce production costs.

[0047] A second aspect of an embodiment of the present application provides a testing device, comprising a printed circuit board, a first flexible circuit board, a test piece, and a positioning fixture as provided in the first aspect and any possible implementation method above, wherein one end of the first flexible circuit board is fixed and electrically connected to the test piece, and the other end of the first flexible circuit board is fixed and electrically connected to the printed circuit board.

[0048] The test piece is used to test the tested device, which includes a connection module, a second flexible circuit board and an electronic device under test. One end of the second flexible circuit board is fixed and electrically connected to the connection module, and the other end of the second flexible circuit board is fixed and electrically connected to the electronic device under test.

[0049] The first docking member is a connection module of the tested piece, and the second docking member is a testing piece. When the mounting seat is located at the second position relative to the flip cover, the testing piece contacts and is electrically connected to the connection module.

[0050] The testing device of the present application adopts the positioning fixture provided by the above-mentioned first aspect and any possible implementation method, which reduces the movement path of the clamping seat and reduces the pulling on the first flexible circuit board. The docking terminal of the second docking part can be docked with the docking terminal of the first docking part at the same time, solving the problem in the prior art that the clamping seat of the positioning fixture has a large movement stroke, the required length of the first flexible circuit board is increased, and the test impedance is increased; and it will cause frequent pulling on the first flexible circuit board, resulting in an increased error rate of the testing device, a reduced lifespan, and reduced test efficiency.

[0051] In one possible implementation, the positioning fixture further includes a mounting plate fixedly connected to the mounting seat to securely connect the end of the first flexible printed circuit board electrically connected to the test piece to the mounting seat. This design has a simple structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 Schematic diagram of the structure of the test device for some schemes;

[0053] Figure 2 This is a schematic diagram of the structure of the test device according to the embodiment of the present application;

[0054] Figure 3 This is a schematic structural diagram of the positioning fixture in an open state according to an embodiment of the present application;

[0055] Figure 4 This is a schematic structural diagram of the positioning fixture in the embodiment of the present application when it is in a folded state;

[0056] Figure 5a This is a schematic diagram of the exploded structure of the positioning fixture in the embodiment of the present application when it is in a folded state;

[0057] Figure 5b This is a schematic diagram of the principle of the positioning fixture in the embodiment of the present application when the mounting seat is in the first position relative to the flip cover;

[0058] Figure 5c This is a schematic diagram of the principle of the positioning fixture in the embodiment of the present application when the mounting seat is located at the third position relative to the flip cover;

[0059] Figure 5d This is a schematic diagram of the principle of the positioning fixture in the embodiment of the present application when the mounting seat is located in the second position relative to the flip cover;

[0060] Figure 6 This is a schematic structural diagram of a fixing block in a positioning fixture according to an embodiment of the present application;

[0061] Figure 7 This is a structural diagram of a fixing block in a positioning fixture according to an embodiment of the present application from another perspective;

[0062] Figure 8This is a schematic structural diagram of a positioning block in a positioning fixture according to an embodiment of the present application;

[0063] Figure 9 This is a structural diagram of a positioning block in a positioning fixture according to an embodiment of the present application from another perspective;

[0064] Figure 10a for Figure 9 A partial enlarged view of part A;

[0065] Figure 10b This is a schematic structural diagram of the first docking member in the test device according to an embodiment of the present application;

[0066] Figure 11a This is a schematic diagram of the positional relationship between the second docking member and the positioning block in the positioning fixture according to an embodiment of the present application, wherein the mounting seat is located at the first position or the third position relative to the flip cover;

[0067] Figure 11b This is a schematic diagram of the positional relationship between the second docking member and the positioning block in the positioning fixture of an embodiment of the present application, wherein the mounting seat is located at the second position relative to the flip cover;

[0068] Figure 12 for Figure 3 A partial enlarged view of part B;

[0069] Figure 13a This is a schematic diagram of the positional relationship between the first connecting member, the fixing block, and the positioning block in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located at the first position or the third position relative to the flip cover;

[0070] Figure 13b This is a schematic diagram of the positional relationship between the first connecting member, the fixing block, and the positioning block in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located at the second position relative to the flip cover;

[0071] Figure 14a This is a schematic diagram of the positional relationship between the second connecting member, the fixed block, and the flip cover in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located in a first position relative to the flip cover;

[0072] Figure 14b This is a schematic diagram of the positional relationship between the second connecting member, the fixed block, and the flip cover in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located at the second position relative to the flip cover;

[0073] Figure 15 This is a schematic structural diagram of the flip cover in the positioning fixture according to an embodiment of the present application;

[0074] Figure 16 This is a schematic structural diagram of the rotating shaft frame in the positioning fixture of an embodiment of the present application;

[0075] Figure 17This is a structural schematic diagram from another perspective when the positioning clamp of an embodiment of the present application is in an open state.

[0076] Description of reference numerals:

[0077] Some solutions:

[0078] 100 ′, device under test; 101 ′, electronic device under test; 102 ′, second flexible printed circuit board; 103 ′, connection module;

[0079] 1', test device; 11', printed circuit board; 12', first flexible circuit board; 13', test piece; 2', positioning fixture; 3', pressing seat; 7', positioning seat.

[0080] This application:

[0081] 100, device under test; 101, electronic device under test; 102, second flexible printed circuit board; 103, connection module; 104, first docking member;

[0082] 1. Test device; 11. Printed circuit board; 12. First flexible circuit board; 13. Test piece; 14. Second docking piece;

[0083] 2. Positioning fixture; 21. Mounting plate; 22. First elastic member; 23. Second elastic member; 24. Locking structure;

[0084] 3. Press seat;

[0085] 31. Mounting seat; 32. Second positioning portion; 33. Sub-positioning portion 1; 34. Sub-positioning portion 2; 35. Connecting shaft;

[0086] 4. Fixing block; 41. Mounting slot; 42. Second hollow portion; 43. Second connecting hole; 44. Position-restricted portion;

[0087] 5. Positioning block; 51. Guided portion; 52. First groove; 53. Boss; 54. Second groove; 55. Through hole; 56. First connecting hole; 57. Positioned portion;

[0088] 6. Flip cover; 61. First hollow portion; 62. Protruding portion; 63. Second shaft hole; 64. Locked portion;

[0089] 7. Positioning seat; 71. First positioning portion; 72. Guide portion; 73. Pin hole; 74. Locking portion; 75. Third groove; 76. Air hole;

[0090] 8. Rotating shaft frame; 81. First shaft hole; 82. Limiting structure;

[0091] 91. First connecting member; 91A. Fastening portion; 91B. Displacement portion; 91C. Limiting portion; 92. Second connecting member; 92A. Fastening portion; 92B. Displacement portion; 92C. Limiting portion;

[0092] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0093] The following specific embodiments illustrate the implementation of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to the implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide an in-depth understanding of the present application, the following description will contain many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other unless there is a conflict.

[0094] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0095] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0096] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this application in specific circumstances.

[0097] In the description of this application, it should be understood that "electrical connection" in this application can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals.

[0098] In the description of this application, it should be noted that the term "perpendicular" in this application does not mean absolute perpendicularity. Approximate perpendicularity due to processing errors and assembly errors (for example, an angle of 89.9° between two structural features) is also within the scope of "perpendicular" in this application. The term "parallel" in this application does not mean absolute parallelism. Approximate parallelism due to processing errors and assembly errors (for example, an angle of 0.1° between two structural features) is also within the scope of "parallel" in this application. This application does not make any specific restrictions on this.

[0099] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0100] See also Figure 1 , Figure 1 Schematic diagram of the structure of the test device for some schemes.

[0101] The electronic components (e.g., display screen, camera, battery, speaker, etc.) in the electronic device communicate with the processor on the circuit board (e.g., motherboard) through a flexible circuit board (e.g., FPC circuit board). In order to ensure the yield rate of the electronic device, each electronic component in the electronic device needs to be tested for yield by a test device before assembly. Figure 1 As shown, a test device 1' typically includes a positioning fixture 2', a test piece 13' positioned within the fixture 2', and a printed circuit board 11' electrically connected to the test piece 13' via a first flexible circuit board 12'. A device under test 100', tested by the test device 1', typically includes a second flexible circuit board 102'. One end of the second flexible circuit board 102' is electrically connected to an electronic device under test 101' (e.g., a display, camera, battery, speaker, etc.) of the electronic device, and the other end is provided with a connection module 103' for connecting to other electronic components of the electronic device (e.g., a motherboard).

[0102] like Figure 1As shown, the positioning fixture 2' typically includes a positioning seat 7' and a pressing seat 3', which are independently arranged. The test piece 13' is disposed in the pressing seat 3', and the other end of the second flexible printed circuit board 102' of the device under test 100' (or, more accurately, the end provided with the connecting module 103') is disposed in the positioning seat 7'. When the test device 1' is performing a test, the pressing seat 3' of the positioning fixture first moves horizontally, aligning the test piece 13' in the pressing seat 3' with the connecting module 103' in the positioning seat 7'. The pressing seat 3' then moves vertically, contacting and electrically connecting the test piece 13' with the connecting module 103'. This allows the electronic device under test 101' to establish electrical communication with the printed circuit board 11', and a series of tests are then performed on the device under test 100' via the test device 1'. For example, the various functions of the electronic device under test 101' can be checked to see if they are functioning properly, and whether the second flexible printed circuit board 102' and the connecting module 103' are short-circuited or open-circuited. After the testing device 1 ′ has finished testing, the pressing seat 3 ′ first moves vertically and then moves horizontally, so that the tested piece 100 ′ can be taken out.

[0103] However, the movement of the compression seat 3' in the positioning fixture results in a long travel range, which increases the required length of the first flexible printed circuit board 12', thereby increasing the test impedance and the probability of false detection. Furthermore, the movement of the compression seat 3' causes the compression seat 3' to frequently pull on the first flexible printed circuit board 12', making it susceptible to damage and requiring frequent replacement, significantly impacting the lifespan and testing efficiency of the test device 1'.

[0104] Based on this, the present application provides a positioning fixture that uses a rotation-first-then-movement motion method, which reduces the motion path of the clamping seat and reduces the pulling on the first flexible circuit board. The docking terminal of the second docking member can simultaneously dock with the docking terminal of the first docking member. This solves the problem in the prior art that the clamping seat of the positioning fixture has a large motion stroke, the required length of the first flexible circuit board is increased, and the test impedance is increased; and that the first flexible circuit board is frequently pulled, resulting in an increased error rate of the test device, a reduced lifespan, and reduced test efficiency. The present application also provides a test device that includes the above-mentioned positioning fixture.

[0105] The following describes an application scenario of the testing device 1 for testing the device under test 100 with reference to the accompanying drawings.

[0106] See also Figures 2 to 5a , Figure 2 This is a schematic diagram of the structure of the test device according to the embodiment of the present application; Figure 3 This is a schematic structural diagram of the positioning fixture in an open state according to an embodiment of the present application; Figure 4This is a schematic structural diagram of the positioning fixture in the embodiment of the present application when it is in a folded state; Figure 5a This is a schematic diagram of the exploded structure of the positioning fixture in the embodiment of the present application when it is in a folded state.

[0107] like Figure 2 As shown, the test device 1 includes a printed circuit board 11, a first flexible circuit board 12, and a test piece 13 (see Figure 5a ) and positioning fixture 2, one end of first flexible circuit board 12 is fixed to and electrically connected to test piece 13, and the other end of first flexible circuit board 12 is fixed to and electrically connected to printed circuit board 11. Printed circuit board 11 is electrically connected to test piece 13 through first flexible circuit board 12.

[0108] Test piece 13 is used to test a device under test 100, which includes a connection module 103, a second flexible printed circuit board 102, and an electronic device under test 101. One end of second flexible printed circuit board 102 is fixed to and electrically connected to connection module 103, while the other end of second flexible printed circuit board 102 is fixed to and electrically connected to electronic device under test 101. In an electronic device, connection module 103 is fixed to and electrically connected to other electronic components of the electronic device (e.g., a motherboard), thereby enabling electronic device under test 101 to electrically connect and communicate with the other electronic components of the electronic device through second flexible printed circuit board 102.

[0109] like Figures 3 to 5a As shown, the positioning fixture 2 includes a pressing seat 3 and a positioning seat 7, the test piece 13 is arranged in the pressing seat 3, the other end of the second flexible circuit board 102 (or it can be understood as the end provided with the connecting module 103) is arranged in the positioning seat 7, and the pressing seat 3 can be rotated relative to the positioning seat 7, so that the positioning fixture 2 switches between the open state and the folded state.

[0110] In one possible implementation, the compression seat 3 includes a mounting seat 31 and a flap 6 connected in a first direction X. The mounting seat 31 is movable relative to the flap 6 along the first direction X so that the mounting seat 31 can switch between a first position and a second position relative to the flap 6. The test piece 13 is disposed in the mounting seat 31 of the compression seat 3. The compression seat 3 is rotatably connected to the positioning seat 7 via the flap 6, allowing the positioning fixture 2 to switch between a folded state and an open state. When the positioning fixture 2 is in the folded state, the compression seat 3 and the positioning seat 7 are stacked in the first direction X.

[0111] When the test device 1 is testing the test piece 100, the pressing seat 3 rotates from an open state relative to the positioning seat 7 to a folded state, so that the test piece 13 in the mounting seat 31 is aligned with the connection module 103 in the positioning seat 7 in the first direction X. At this time, the mounting seat 31 is in a first position relative to the flip cover 6. The mounting seat 31 of the pressing seat 3 then moves along the first direction X toward the positioning seat 7 until the test piece 13 and the connection module 103 are connected and electrically connected. At this time, the mounting seat 31 is in a second position relative to the flip cover 6. This allows the electronic device 101 under test to be electrically connected and communicate with the printed circuit board 11, and a series of tests are performed on the test piece 100 through the test device 1. For example, the test can be used to test whether the various functions of the electronic device 101 under test can operate normally, and whether the second flexible circuit board 102 and the connection module 103 have short circuits, open circuits, or other problems. The first direction X can be understood as the thickness direction of the pressing seat 3.

[0112] After the test device 1 completes the test, the mounting seat 31 of the pressing seat 3 first moves along the first direction X away from the positioning seat 7, and then the pressing seat 3 as a whole rotates relative to the positioning seat 7 to an open state, and the test piece 100 is replaced to perform the test of the next test piece 100.

[0113] It should be noted that the method for moving the mounting seat 31 of the pressing seat 3 along the first direction X is not limited. A pressing plate may be provided on top of the pressing seat 3 along the first direction X, and the pressing plate may be driven to press or release the mounting seat 31 to cause the mounting seat 31 to move along the first direction X. Alternatively, the mounting seat 31 may be moved along the first direction X by manually pressing or releasing the pressing plate. Those skilled in the art may choose the method based on the specific circumstances. In one possible implementation, the mounting seat 31 is moved along the first direction X by driving the pressing plate to press or release the mounting seat 31.

[0114] Furthermore, the second flexible circuit board 102 can extend in only one direction or be configured as a bifurcated structure with multiple extended ends. Those skilled in the art will be able to make the appropriate choice based on practical circumstances. In one example, the second flexible circuit board 102 extends in only one direction, with one end connected to the electronic device under test 101 and the other end connected to other electronic components of the electronic device via the connection module 103.

[0115] The printed circuit board 11 is a support for the electronic components in the test device 1 and also serves as a carrier for the electrical connection of the electronic components. In some embodiments, it can also be called a main circuit board. The electronic components include but are not limited to capacitors, inductors, resistors, processors, batteries, etc. The printed circuit board 11 can be made of FR-4 dielectric board, Rogers dielectric board, mixed dielectric board of Rogers and FR-4, etc. Here, FR-4 is a code name for a flame retardant material grade, and Rogers dielectric board is a high-frequency board.

[0116] Furthermore, the type of electronic device under test 101 is not limited. For example, the electronic device under test 101 can be a display screen, camera, battery, speaker, or other electronic device. Furthermore, the type of connection module 103 is not limited and can be a board-to-board connector, a backplane connector, or other types. In one example, connection module 103 is configured as a board-to-board connector.

[0117] It should be noted that the end of the first flexible circuit board 12 electrically connected to the test piece 13 is fixedly connected to the mounting base 31, and the fixed connection method is not limited, and can be a clamping, bonding, or pressing fixation method. In a possible implementation, as Figure 5a As shown, the positioning fixture 2 further includes a mounting plate 21, which is fixedly connected to the mounting seat 31, thereby fixing the end of the first flexible circuit board 12 electrically connected to the test piece 13 to the mounting seat 31. The structure is simple and the manufacturing cost is low.

[0118] It should be noted that the positioning fixture 2 in this application can be used not only in the test device 1, but also in other scenarios, as long as it is used to achieve the docking of two docking parts. In this application, the positioning fixture 2 is mainly used to achieve the docking of the first docking part 104 and the second docking part 14. The first docking part 104 is placed on the positioning seat 7, and the second docking part 14 is placed on the mounting seat 31 of the pressing seat 3.

[0119] The types of the first docking member 104 and the second docking member 14 are not limited and can be electronic devices, conductors for electrical connection, or structural members for mechanical connection only. Those skilled in the art can make the selections as needed.

[0120] Furthermore, one of the butt terminals of the first butt connection member 104 and the butt terminals of the second butt connection member 14 is a male terminal and the other is a female terminal, which can be selected by those skilled in the art according to actual conditions.

[0121] It should be noted that in the test device 1 described above, the first docking member 104 is the connection module 103 of the device under test 100, and the second docking member 14 is the test piece 13. Both the first docking member 104 and the second docking member 14 are conductors for electrical connection. Furthermore, the docking terminals of the test piece 13 are male terminals, while the docking terminals of the device under test 100 are female terminals.

[0122] The following describes in detail the movement process of the positioning fixture 2 in the folded state and the mounting seat 31 switching from the first position to the second position relative to the flip cover 6 with reference to the accompanying drawings.

[0123] See also Figures 5b to 5d , Figure 5b This is a schematic diagram of the principle of the positioning fixture in the embodiment of the present application when the mounting seat is in the first position relative to the flip cover; Figure 5c This is a schematic diagram of the principle of the positioning fixture in the embodiment of the present application when the mounting seat is located at the third position relative to the flip cover; Figure 5d This is a schematic diagram of the principle when the mounting seat in the positioning fixture of an embodiment of the present application is in the second position relative to the flip cover.

[0124] It should be noted that Figures 5b to 5d This is a schematic diagram of the principle of the positioning fixture, which is only used to illustrate the process principle when the mounting base switches from the first position to the second position relative to the flip cover, and does not limit the specific structure of the present application.

[0125] like Figure 5a and Figure 5b As shown, the positioning seat 7 is provided with: a guide portion 72 and a first positioning portion 71 for placing the first docking member 104, and the mounting seat 31 of the pressing seat 3 is provided with: a guided portion 51 corresponding to the guide portion 72, and a second positioning portion for placing the second docking member 14.

[0126] Moreover, when the positioning fixture 2 is in a folded state and the mounting seat 31 is in the first position relative to the flip cover 6, the guiding portion 72 and the guided portion 51 are separated from each other in the first direction X, and the second docking member 14 placed on the mounting seat 31 and the first docking member 104 placed on the positioning seat 7 are separated from each other in the first direction X.

[0127] like Figure 5a and Figure 5d As shown, when the positioning fixture 2 is in a folded state and the mounting seat 31 switches from the first position to the second position relative to the flip cover 6, the mounting seat 31 moves in the first direction X toward the flip cover 6, and the guide portion 72 cooperates with the corresponding guided portion 51 until the second docking piece 14 placed on the mounting seat 31 docks with the first docking piece 104 placed on the positioning seat 7.

[0128] It should be noted that the specific structure of the mounting base 31 is not limited. In a possible implementation, Figure 5a As shown, the mounting base 31 includes a fixed block 4 and a positioning block 5. The positioning block 5 is connected to the side of the fixed block 4 near the flip cover 6 in the first direction X and is movable relative to the fixed block 4 in the first direction X. The mounting base 31 is connected to the flip cover 6 via the fixed block 4. The flip cover 6 is provided with a first hollow portion 61 along the first direction X for the positioning block 5 to pass through. In addition, a guided portion 51 is provided on the positioning block 5.

[0129] Among them, such as Figures 5a to 5d As shown, the process of the mounting base 31 switching from the first position to the second position relative to the flip cover 6 is as follows:

[0130] When the positioning fixture 2 is in the folded state and the mounting seat 31 is located at the first position relative to the flip cover 6, as shown in FIG. Figure 5b As shown, the positioning block 5 and the positioning seat 7 are separated from each other in the first direction X.

[0131] When the positioning fixture 2 is in the folded state and the mounting base 31 is located at a third position between the first position and the second position relative to the flip cover 6, as shown in FIG. Figure 5a and Figure 5c As shown, the positioning block 5 is connected to the positioning seat 7 through the first hollow portion 61 of the flip cover 6, the guiding portion 72 is plugged into the guided portion 51, and the second docking member 14 placed on the mounting seat 31 and the first docking member 104 placed on the positioning seat 7 are separated from each other in the first direction X.

[0132] When the positioning fixture 2 is in the folded state and the mounting base 31 switches from the third position to the second position relative to the flip cover 6, as shown in FIG. Figure 5d As shown, the fixing block 4 moves relative to the positioning block 5 in the first direction X toward the positioning seat 7 until the second docking member 14 docks with the first docking member 104 .

[0133] Or it can be understood as, Figures 5a to 5d As shown, when the positioning fixture 2 is in the folded state and the mounting base 31 moves from the first position to the second position along the first direction X, the mounting base 31 first moves as a whole to a position where the positioning block 5 connects with the positioning base 7 through the first hollow portion 61 of the flip cover 6 (or can be understood as the third position), and the guide portion 72 is plugged into the guided portion 51. The mounting base 31 continues to move along the first direction X, the positioning block 5 is connected to the positioning base 7 and remains stationary, and only the fixing block 4 moves relative to the positioning block 5 along the first direction X until the second docking member 14 docks with the first docking member 104 (or can be understood as the second position). This effectively improves the docking accuracy of the second docking member 14 and the first docking member 104.

[0134] It will be understood by those skilled in the art that the specific structures of the guiding portion 72 and the guided portion 51 are not limited. In one possible implementation, Figure 5a As shown, the guide portion 72 on the positioning seat 7 is configured as a pin hole 73 extending along the first direction X, and the guided portion 51 on the mounting seat 31 is configured as a columnar structure extending along the first direction X. The columnar guided portion 51 is inserted into the pin hole 73, effectively improving the docking accuracy of the second docking member 14 and the first docking member 104.

[0135] It should be noted that the guided portion 51 can be provided on the fixing block 4 of the mounting base 31 or on the positioning block 5 of the mounting base 31. Those skilled in the art can make a choice according to actual conditions. In one example, the guided portion 51 is provided on the positioning block 5 of the mounting base 31.

[0136] Furthermore, the positioning block 5 of the mounting seat 31 and the guided portion 51 of the columnar structure can be configured as an integral structure or as a separate structure. In one possible implementation, the positioning block 5 of the mounting seat 31 and the guided portion 51 of the columnar structure are configured as separate structures. Furthermore, the connection method between the guided portion 51 of the columnar structure and the mounting seat 31 is not limited and can be welding, threaded, or other methods. In one example, the guided portion 51 and the mounting seat 31 are connected via a threaded structure.

[0137] It should be noted that a bushing may be provided in the pin hole 73 of the positioning seat 7, and the guided portion 51 of the columnar structure may be inserted into the bushing; or a bushing may not be provided, and the guided portion 51 of the columnar structure may be directly inserted into the pin hole 73. Those skilled in the art may make a choice according to actual conditions. In one example, a bushing is provided in the pin hole 73 of the positioning seat 7, and the guided portion 51 of the columnar structure may be inserted into the bushing. The material of the bushing should have properties such as wear resistance and corrosion resistance, for example, graphite, stainless steel and other materials. In one example, the bushing is made of stainless steel.

[0138] It should be noted that the number and location of the guiding portions 72 and the guided portions 51 are not limited. Figure 5a As shown, there are two guided portions 51, and they are arranged at both ends of the bottom surface of the positioning block 5 along the length direction of the positioning block 5; correspondingly, there are also two guide portions 72, and they are arranged at positions corresponding to the guided portions 51 on the top surface of the positioning seat 7. The bottom surface of the positioning block 5 can be understood as the surface of the positioning block 5 away from the fixed block 4 in the first direction X. The top surface of the positioning seat 7 can be understood as the surface of the positioning seat 7 close to the positioning block 5 in the first direction X. It should be noted that the specific structures of the first positioning portion 71 and the second positioning portion 32 are not limited. The following is combined Figures 6 to 12The possible implementation forms of the first positioning portion 71 and the second positioning portion 32 are described in detail. Figure 6 and Figure 7 Shows the structure of the fixed block in the positioning fixture from different perspectives. Figures 8 to 10a Shows the structure of the positioning block in the positioning fixture from different perspectives. Figure 10b The structure of the first docking member is shown; Figures 11a to 12 Different positional relationships between the second docking member and the positioning block in the positioning fixture are shown.

[0139] In one possible implementation, Figure 5a As shown, the second positioning portion 32 includes a first sub-positioning portion 33 provided on the fixing block 4 and a second sub-positioning portion 34 provided on the positioning block 5 .

[0140] like Figure 6 and Figure 7 As shown, the sub-positioning portion 133 on the fixing block 4 is configured as a mounting groove 41 extending along the first direction X, and a second hollow portion 42 is provided at the bottom of the mounting groove 41. The notch of the mounting groove 41 is located on the surface of the fixing block 4 away from the positioning block in the first direction X. The mounting groove 41 of the fixing block 4 is used to place the second docking member 14 (such as Figure 5a shown).

[0141] like Figure 8 and Figure 9 As shown, the second sub-positioning portion 34 on the positioning block 5 is configured as a first groove 52, which is recessed from the top surface toward the bottom surface of the positioning block 5 along the first direction X. A boss 53 is provided on the bottom surface of the positioning block 5, and a second groove 54 is defined on the surface of the boss 53 facing away from the positioning block 5. A through-hole 55 is provided on the bottom surface of the first groove 52, extending to the bottom surface of the second groove 54. The top surface of the positioning block 5 can be understood as the surface of the positioning block 5 facing the fixed block 4 along the first direction X. It should be noted that the through-hole structure provided on the bottom surface of the first groove 52 can be designed based on the structure of the second docking member 14. For example, when the end of the second docking member 14 near the positioning seat 7 integrally passes through the through-hole 55 to dock with the first docking member 104, there is only one through-hole 55, and the structure corresponds to the structure of the end of the second docking member 14 near the positioning seat 7. When multiple docking terminals of the second docking member 14 pass through the through-hole 55, the through-hole 55 is configured as a plurality of sub-through-holes corresponding in shape to the docking terminals. In one possible implementation, Figure 10a As shown, the through hole 55 is configured to allow the docking terminal of the second docking member 14 in the installation groove 41 to pass through, and the through hole 55 is provided with a plurality of sub-through holes with shapes corresponding to the docking terminals.

[0142] Furthermore, the structural shape of the second groove 54 may or may not correspond to the structural shape of the first docking member 104. In a possible implementation, Figure 10a and Figure 10b As shown, the structural shape of the second groove 54 corresponds to the structural shape of the first docking member 104. When the mounting seat 31 is in the third position relative to the flip cover 6, the first docking member 104 is wholly or partially accommodated in the second groove 54, further improving the docking accuracy of the positioning fixture 2.

[0143] like Figure 11a and Figure 11b As shown, when the positioning fixture 2 is in the open state, or when the positioning fixture 2 is in the folded state and the mounting base 31 is in the first position relative to the flip cover 6, the end surface of the mating terminal of the second mating member 14 in the mounting groove 41 is located within the through hole 55 of the positioning block 5. When the mounting base 31 is in the second position relative to the flip cover 6, the end surface of the mating terminal of the second mating member 14 in the mounting groove 41 is located outside the through hole 55 of the positioning block 5 and extends into the second groove 54.

[0144] When the mounting base 31 is in the second position relative to the flip cover 6, the docking terminal of the second docking member 14 in the mounting groove 41 passes through the second hollow portion 42, the first groove 52, the through-hole 55 on the bottom surface of the first groove 52, and into the second groove 54, allowing it to dock with the first docking member 104 in the folded state. Furthermore, when the positioning fixture 2 is in the open state and the mounting base 31 is in the first position, the end face of the docking terminal of the second docking member 14 in the mounting groove 41 is located within the through-hole 55 of the positioning block 5. This effectively prevents damage to the docking terminal of the second docking member 14 due to external uncertainties when the positioning fixture 2 is in the open state and the mounting base 31 is in the first position.

[0145] like Figure 5a As shown, the first positioning portion 71 is configured as a third groove 75 extending along the first direction X on the positioning seat 7. The shape of the third groove 75 corresponds to the shape of the first docking member 104, or corresponds to the shape of the component (e.g., the second flexible circuit board 102) disposed in the third groove 75 together with the first docking member 104. Those skilled in the art may design the structure based on actual circumstances. In one possible implementation, the connection module 103 (first docking member 104) and a portion of the second flexible circuit board 102 are disposed in the third groove 75 (first positioning portion 71) of the positioning seat 7.

[0146] Furthermore, the first docking member 104 is detachably connected to the first positioning portion 71, and the connection method between the first docking member 104 and the first positioning portion 71 is not limited. For example, it can be connected by vacuum adsorption or magnetic adsorption. In a possible implementation, Figure 5a and Figure 12 As shown, an air hole 76 is provided on the bottom surface of the third groove 75 , and the air hole 76 is connected to the air source. By controlling the switch of the air source, the second flexible circuit board 102 and the connection module 103 placed in the third groove 75 are fixed and separated.

[0147] like Figures 3 to 5a As shown, the pressing seat 3 of the positioning fixture 2 can be rotatably connected to the positioning seat 7 via the flip cover 6, allowing the positioning fixture 2 to switch between a folded state and an open state. In addition, when the positioning fixture 2 is in the folded state, the mounting seat 31 can move relative to the flip cover 6 along the first direction X, allowing the mounting seat 31 to switch between a first position and a second position relative to the flip cover 6. The positioning fixture 2 rotates first and then moves, which reduces the movement path of the pressing seat 3. When the positioning fixture 2 is applied to the test device 1, it can reduce the length of the first flexible circuit board 12 in the test device 1, effectively reducing impedance and reducing the error rate. In addition, the rotational movement reduces the pulling on the first flexible circuit board 12, effectively improving the lifespan and detection efficiency of the test device 1.

[0148] Furthermore, when the mounting seat 31 is in the first position, the second docking member 14 (for example, the test member 13) and the first docking member 104 (for example, the connection module 103 of the tested member 100) are separated from each other in the first direction X. The second docking member 14 is docked with the first docking member 104 only after the mounting seat 31 moves to the second position along the first direction X. This allows the docking terminals of the second docking member 14 to dock with the docking terminals of the first docking member 104 at the same time, thereby avoiding damage to the second docking member 14 and the first docking member 104 due to some of the docking terminals docking first during the rotation process. Furthermore, it can also ensure that all the docking terminals of the second docking member 14 are pressed vertically downward to dock with the first docking member 104. Among them, vertical downward pressing can be understood as pressing down in a direction perpendicular to the docking surface of the positioning seat 7. The docking surface of the positioning seat 7 is: when the positioning fixture 2 is in the folded state, the surface of the positioning seat 7 that docks with the flip cover 6 of the pressing seat 3.

[0149] Therefore, the positioning fixture 2 provided in the embodiment of the present application adopts a movement mode of first rotating and then moving, which reduces the movement path of the clamping seat 3 and reduces the pulling on the first flexible circuit board 12, and the docking terminal of the second docking member 14 can be docked with the docking terminal of the first docking member 104 at the same time, solving the problem in the prior art that the clamping seat 3 of the positioning fixture 2 has a large movement stroke, the required length of the first flexible circuit board 12 is increased, and the test impedance is increased; and, it will cause frequent pulling on the first flexible circuit board 12, resulting in an increased error rate of the test device 1, a reduced lifespan, and a reduced test efficiency.

[0150] The above, combined with the accompanying drawings, describes in detail the movement process when the positioning fixture 2 is in a folded state and the mounting seat 31 switches from the first position to the second position relative to the flip cover 6. The following, combined with the accompanying drawings, describes in detail the structure of the first connecting member 91 and the second connecting member 92, as well as the connection method with other components in the positioning fixture 2.

[0151] See also Figures 13a to 14b , Figure 13a This is a schematic diagram of the positional relationship between the first connecting member, the fixing block, and the positioning block in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located at the first position or the third position relative to the flip cover; Figure 13b This is a schematic diagram of the positional relationship between the first connecting member, the fixing block, and the positioning block in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located at the second position relative to the flip cover; Figure 14a This is a schematic diagram of the positional relationship between the second connecting member, the fixed block, and the flip cover in the positioning fixture of the embodiment of the present application; wherein the mounting seat is located in a first position relative to the flip cover; Figure 14b This is a schematic diagram of the positional relationship between the second connecting member, the fixed block and the flip cover in the positioning fixture of an embodiment of the present application; wherein, the mounting seat is located at the second position relative to the flip cover.

[0152] It should be noted that there is no limitation on the manner in which the fixing block 4 and the positioning block 5 can achieve relative movement in the first direction X. In one possible implementation, Figure 13a As shown, and reference Figure 5a For better understanding, the positioning fixture 2 also includes a first connecting member 91, through which the fixing block 4 and the positioning block 5 are connected. The first connecting member 91 includes a fastening portion 91A, a displacement portion 91B, and a limiting portion 91C, which are sequentially connected and relatively fixed. The first connecting member 91 can adopt an integrated structure or a split structure, which is not limited in this application. In one example, the first connecting member 91 is configured as an integrated structure.

[0153] The number and location of the first connecting members 91 are not limited. In a possible implementation, Figure 5a As shown, there are four first connecting members 91 , which are arranged at both ends of the fixing block 4 along its length direction, and the number of first connecting members 91 at both ends of the fixing block 4 is equal, both being two.

[0154] The first connecting member 91 is fixedly connected to the fixed block 4 through the fastening portion 91A. The positioning block 5 is provided with a first connecting hole 56 that passes through the positioning block 5 along the first direction X. The first connecting hole 56 is provided with a limited portion 57 at one end away from the fixed block 4, and the displacement portion 91B is passed through the first connecting hole 56.

[0155] like Figure 13a and Figure 13b As shown, combined with Figures 5b to 5d It is understood that when the positioning fixture 2 is in a folded state and the mounting seat 31 is in the first position relative to the flip cover 6 or switches from the first position to the third position, the limiting portion 91C of the first connecting member 91 abuts against the limited portion 57 to limit the movement of the fixing block 4 relative to the positioning block 5 in the first direction X toward away from the positioning block 5.

[0156] When the mounting base 31 switches from the third position to the second position relative to the flip cover 6 , the displacement portion 91B of the first connecting member 91 slides relative to the first connecting hole 56 of the positioning block 5 , and the limiting portion 91C and the limited portion 57 separate from each other.

[0157] like Figure 13a and Figure 13b As shown, combined with Figures 5b to 5d It can be understood that the fastening portion 91A of the first connecting member 91 is fixedly connected to the fixing block 4. During the switching process of the mounting seat 31 from the third position to the second position, the abutment and restraint between the limiting portion 91C of the first connecting member 91 and the limited portion 57 of the positioning block 5 is cancelled, and the displacement portion 91B of the first connecting member 91 slides relative to the first connecting hole 56 of the positioning block 5. This effectively prevents the positioning block 5 from falling off the first connecting member 91 and effectively prevents the docking terminal of the second docking member 14 from being damaged by external uncertainties when the mounting seat 31 is in the first position or switching from the first position to the third position.

[0158] It should be noted that the fastening portion 91A of the first connector 91 is fixedly connected to the fixing block 4 in any manner, and may be clamped, bonded, threaded, etc. In one example, the fastening portion 91A of the first connector 91 is fixedly connected to the fixing block 4 by threading.

[0159] Furthermore, the structure of the displacement portion 91B of the first connecting member 91 is not limited and may be cylindrical, prismatic, etc. In one example, the displacement portion 91B of the first connecting member 91 is configured as a cylindrical structure, passing through the first connecting hole 56 and sliding relative to the first connecting hole 56 .

[0160] Furthermore, the specific structure of the limiting portion 91C of the first connecting member 91 and the limited portion 57 of the first connecting hole 56 is not limited, and can be a groove structure limit or a plane abutment limit. Those skilled in the art can choose according to actual needs. In one possible implementation, Figure 13a As shown, the limited portion 57 of the first connecting hole 56 is configured as a groove structure, and the bottom surface of the groove is provided with a through hole extending along the first direction X; when the limiting surface of the limiting portion 91C in the first connecting member 91 contacts the bottom surface of the groove, the first connecting member 91 abuts against the positioning block 5 for limiting, effectively preventing the positioning block 5 from falling off the first connecting member 91.

[0161] In one possible implementation, Figure 5a As shown, the positioning fixture 2 further includes a first elastic member 22, the ends of which along the first direction X are connected to the fixed block 4 and the positioning block 5, respectively. This ensures that when the positioning fixture 2 is in the open state and the mounting seat 31 is in the first position relative to the flip cover 6 or switches from the first position to the third position, the limiting portion 91C of the first connecting member 91 abuts and limits the position against the limited portion 57 of the positioning block 5, positioning the end face of the mating terminal of the second mating member 14 within the through hole 55 of the positioning block 5, effectively preventing damage to the mating terminal of the second mating member 14 due to external uncertainties. In another possible implementation, the first elastic member 22 is not disposed between the fixed block 4 and the positioning block 5.

[0162] See Figure 5a 、 Figure 11a and Figure 11b It is understood that the connection method of the first elastic member 22 to the fixed block 4 and the positioning block 5 is not limited, and can be welding, bonding, clamping, etc. In addition, the connection position of the first elastic member 22 to the fixed block 4 and the positioning block 5 is not limited. In one possible implementation, grooves are provided on the bottom surface of the fixed block 4 and the top surface of the positioning block 5, and the two ends of the first elastic member 22 are connected to the bottom surface of the groove of the fixed block 4 and the bottom surface of the groove of the positioning block 5. In other alternative solutions, the two ends of the first elastic member 22 along the first direction X can also be directly connected to the bottom surface of the fixed block 4 and the top surface of the positioning block 5.

[0163] It should be noted that the number and location of the first elastic members 22 are not limited. Figure 5a As shown, there are four first elastic members 22 , which are arranged at both ends of the first groove 52 along the length direction of the positioning block 5 , and the number of first elastic members 22 at both ends of the first groove 52 is equal, both being two.

[0164] In one possible implementation, Figure 10a As shown, each edge of the second groove 54 on the surface near the positioning seat 7 along the first direction X is configured as a chamfered structure. When the second connecting member 92 is docked with the first connecting member 91, the first elastic member 22 can cause the positioning block 5 as a whole to undergo a certain displacement in a plane perpendicular to the first direction X, thereby allowing the first docking member 104 to slide into the second groove 54 through the chamfered structure of the second groove 54 and dock with the second docking member 14. This avoids the impact of errors caused by factors such as the processing technology on the docking accuracy, further improving the docking accuracy of the positioning fixture 2. In another possible implementation, each edge of the second groove 54 on the surface near the positioning seat 7 along the first direction X does not have a chamfered structure.

[0165] It should be noted that there is no limitation on the manner in which the fixed block 4 and the flip cover 6 can achieve relative movement in the first direction X. In one possible implementation, Figure 4 and Figure 5a As shown, the positioning fixture 2 also includes a second connecting member 92 and a second elastic member 23. The fixed block 4 and the flip cover 6 are connected through the second connecting member 92 and the second elastic member 23. The two ends of the second elastic member 23 along the first direction X are respectively connected to the fixed block 4 and the flip cover 6.

[0166] Furthermore, the number and location of the second connecting members 92 are not limited. Figure 5a As shown, there are four second connecting members 92, which are disposed at both ends of the fixing block 4 along the length of the fixing block 4. The number of second connecting members 92 at both ends of the fixing block 4 is equal, namely, two. Furthermore, there are no restrictions on the number and placement of the second elastic members 23. In one possible implementation, there are four second elastic members 23, which are disposed at both ends of the first hollow portion 61 along the length of the positioning block 5. The number of second elastic members 23 at both ends of the first hollow portion 61 is equal, namely, two.

[0167] Furthermore, the connection method of the second elastic member 23 with the fixed block 4 and the flip cover 6 is not limited, and can be welding, bonding, clamping, etc. Furthermore, the connection position of the second elastic member 23 with the fixed block 4 and the flip cover 6 is not limited. In one example, Figure 4 and Figure 5a As shown, the second elastic member 23 is connected to the bottom surface of the fixed block 4 and the top surface of the flip cover 6 at both ends along the first direction X. In another example, a groove is formed on the bottom surface of the fixed block 4 and the top surface of the flip cover 6, and the second elastic member 23 is connected to the bottom surface of the groove of the fixed block 4 and the bottom surface of the groove of the flip cover 6.

[0168] The second connecting member 92 includes a fastening portion 92A, a displacement portion 92B, and a limiting portion 92C that are sequentially connected and relatively fixed. The second connecting member 92 can be an integrated structure or a split structure, which is not limited in this application.

[0169] The second connecting member 92 is fixedly connected to the flip cover 6 through the fastening portion 92A. A second connecting hole 43 is provided on the fixing block 4 along the first direction X, and a limited portion 44 is provided at the end of the second connecting hole 43 away from the flip cover 6. The displacement portion 92B is passed through the second connecting hole 43.

[0170] like Figure 14a and Figure 14b As shown, the limiting portion 92C of the second connecting member 92 is used to abut against the limited portion 44 of the second connecting hole 43 to limit the movement of the fixing block 4 relative to the flip cover 6 in the first direction X toward the direction away from the flip cover 6.

[0171] When the mounting base 31 switches from the first position to the second position relative to the flip cover 6 , the displacement portion 92B of the second connecting member 92 slides relative to the second connecting hole 43 of the fixing block 4 , and the limiting portion 92C separates from the limited portion 44 .

[0172] like Figure 14a and Figure 14b As shown, combined with Figure 5a It is understood that when the mounting seat 31 is in the first position relative to the flip cover 6, the second elastic member 23 causes the limiting portion 92C of the second connecting member 92 to abut and limit the position against the limited portion 44 of the fixed block 4. When the mounting seat 31 switches from the first position to the second position relative to the flip cover 6, the second elastic member 23 deforms, causing the limiting portion 92C and the limited portion 44 to separate from each other, and the displacement portion 92B of the second connecting member 92 to slide relative to the second connecting hole 43 of the fixed block 4. During the rotation of the positioning fixture 2, the second docking member 14 placed on the mounting seat 31 and the first docking member 104 placed on the positioning seat 7 separate from each other in the first direction X, preventing damage to the second docking member 14 and the first docking member 104 due to some of the docking terminals docking first during rotation.

[0173] It should be noted that the fastening portion 92A of the second connector 92 is fixedly connected to the flip cover 6 in any manner, and may be clamped, bonded, threaded, etc. In one example, the fastening portion 92A of the second connector 92 is fixedly connected to the flip cover 6 by threading.

[0174] Furthermore, the structure of the displacement portion 92B of the second connecting member 92 is not limited and may be cylindrical, prismatic, etc. In one example, the displacement portion 92B of the second connecting member 92 is configured as a cylindrical structure, passing through the second connecting hole 43 and sliding relative to the second connecting hole 43 .

[0175] Furthermore, the specific structure of the limiting portion 92C of the second connecting member 92 and the limited portion 44 of the second connecting hole 43 is not limited, and can be a groove structure limit or a plane abutment limit. Those skilled in the art can choose according to actual needs. In one possible implementation, Figure 14a As shown, the limited portion 44 of the second connecting hole 43 is set as a groove structure, and the bottom surface of the groove is provided with a through hole extending along the first direction X; when the limiting surface of the limiting portion 92C in the second connecting member 92 contacts the bottom surface of the groove, the second connecting member 92 abuts against the fixing block 4 for limiting.

[0176] It should be noted that the structures of the first elastic member 22 and the second elastic member 23 are not limited, for example, they can be configured as springs, rubber and the like. Moreover, the structures of the first elastic member 22 and the second elastic member 23 can be the same or different. In one example, Figure 5a As shown, the first elastic member 22 and the second elastic member 23 are both configured as springs.

[0177] The above describes in detail the structure of the first connecting member 91 and the second connecting member 92 and the connection method with other components of the positioning fixture 2 in combination with the drawings. The following describes in detail the rotation structure and locking structure 24 of the positioning fixture 2 in combination with the drawings.

[0178] See also Figures 15 to 17 , Figure 15 This is a schematic structural diagram of the flip cover in the positioning fixture according to an embodiment of the present application; Figure 16 This is a schematic structural diagram of the rotating shaft frame in the positioning fixture of an embodiment of the present application; Figure 17 This is a structural schematic diagram from another perspective when the positioning clamp of an embodiment of the present application is in an open state.

[0179] It should be noted that the specific structure for the relative rotation between the flip cover 6 and the positioning seat 7 is not limited. In a possible implementation, Figures 15 to 17 As shown, the flip cover 6 and the positioning seat 7 are rotatably connected via a rotating structure. The rotating structure includes a rotating shaft frame 8 and a connecting shaft 35. The rotating shaft frame 8 is fixedly connected to the positioning seat 7 and has a first axial hole 81 extending along the second direction Y. The flip cover 6 is provided with a protrusion 62, which has a second axial hole 63 extending along the second direction Y. The connecting shaft 35 is inserted through the first axial hole 81 and the second axial hole 63, thereby rotatably connecting the positioning seat 7 to the flip cover 6. The second direction Y is the axial direction of the connecting shaft 35 and is perpendicular to the first direction X.

[0180] The rotating shaft frame 8 is fixedly connected to the positioning seat 7, and the connecting shaft 35 is passed through the first shaft hole 81 of the rotating shaft frame 8 and the second shaft hole 63 of the flip cover 6, so that the positioning seat 7 is rotatably connected to the flip cover 6. The method of rotatably connecting the positioning seat 7 and the flip cover 6 is simple, which reduces production costs.

[0181] It should be noted that the rotating shaft frame 8 and the positioning seat 7 can be set as an integrated structure or a split structure. Those skilled in the art can design it according to design needs. In a possible implementation, the rotating shaft frame 8 and the positioning seat 7 are split structures and are fixedly connected.

[0182] Furthermore, the second axial hole 63 can be configured as a through hole along the second direction Y, or as two blind holes extending along the second direction Y at both ends of the protrusion 62. In one possible implementation, the second axial hole 63 is configured as two blind holes extending along the second direction Y at both ends of the protrusion 62; and the shaft frame 8 defines a groove facing the flip cover 6 along the first direction X, with first axial holes 81 defined on both side walls of the groove along the second direction Y, and the protrusion 62 of the flip cover 6 is disposed in the groove of the shaft frame 8. Furthermore, two connecting shafts 35 are correspondingly provided. One connecting shaft 35 passes through the first axial hole 81 at one end of the shaft frame 8 along the second direction Y and the second axial hole 63 at one end of the protrusion 62 along the second direction Y, and the other connecting shaft 35 passes through the first axial hole 81 at the other end of the shaft frame 8 along the second direction Y and the second axial hole 63 at the other end of the protrusion 62 along the second direction Y.

[0183] It should be noted that to reduce the tilting angle of the compression seat 3, thereby reducing the strain on the first flexible circuit board 12 and improving the lifespan and testing efficiency of the test device 1, when the positioning fixture 2 is in the open state, the positioning seat 7 and the flip cover 6 should not be fully extended, but should be set at a certain angle. This angle can be achieved by providing a damping structure in the rotating structure between the flip cover 6 and the rotating shaft frame 8, or by a limit structure.

[0184] In one possible implementation, Figure 16 and Figure 17 As shown, the top surface of the rotating shaft frame 8 along the first direction X is provided with a protruding stop structure 82. When the positioning fixture 2 is in the open state, the stop structure 82 on the rotating shaft frame 8 abuts against the flip cover 6, restricting further rotation of the flip cover 6. While not affecting the placement and loading of the test piece 100, this also reduces the tilting angle of the pressing seat 3, thereby reducing the pulling on the first flexible circuit board 12, thereby improving the lifespan and testing efficiency of the testing device 1.

[0185] Furthermore, when the positioning fixture 2 is in the open state, the angle between the bottom surface of the flip cover 6 and the top surface of the positioning seat 7 is 100° to 120°. For example, the angle can be 105°, 110°, 115°, etc. This design reduces the pulling on the first flexible circuit board 12, thereby improving the lifespan and testing efficiency of the testing device 1.

[0186] It should be noted that the angle range between the bottom surface of the flip cover 6 and the top surface of the positioning seat 7 is not limited to this application, and those skilled in the art can design it according to actual needs. For example, the angle between the bottom surface of the flip cover 6 and the top surface of the positioning seat 7 can also be set to 70°, 90°, 130°, 140°, etc.

[0187] In one possible implementation, Figure 3 and Figure 5aAs shown, the positioning fixture 2 further includes a locking structure 24 , which includes a locking portion 74 and a locked portion 64 . The locking portion 74 is disposed on the positioning seat 7 , and the locked portion 64 is disposed on the flip cover 6 .

[0188] When the positioning fixture 2 is in the open state, the locking portion 74 and the locked portion 64 are unlocked and separated. When the positioning fixture 2 is in the folded state, the locking portion 74 and the locked portion 64 are locked together, thereby fixing the flip cover 6 and the positioning seat 7 to each other. This improves the stability of the positioning fixture 2 in the folded state, thereby improving the docking accuracy of the first docking member 104 and the second docking member 14.

[0189] It should be noted that the specific structure of the locking structure 24 is not limited, for example, it can be a snap-on locking structure, a magnetic locking structure, etc. In a possible implementation, as Figure 5a As shown, the locking portion 74 is a magnetic component, and the locked portion 64 is a magnetic component. When the positioning fixture 2 is in the folded state, the magnetic component and the magnetic component are attracted together.

[0190] Furthermore, at least one of the magnetic component and the magnetically attracted component is configured as a magnetic material. In one example, one of the magnetic component and the magnetically attracted component is configured as a magnetic material, and the other is configured as a metal that can be attracted by the magnetic material. The locking portion 74 and the locked portion 64 have simple structures and are made of common materials, which can effectively reduce production costs. In another example, both the magnetic component and the magnetically attracted component are configured as magnetic materials.

[0191] Furthermore, when the locking portion 74 and the locked portion 64 are locked with each other, the flip cover 6 and the positioning seat 7 may contact each other or have a certain distance therebetween in the first direction X. Those skilled in the art may design the flip cover 6 and the positioning seat 7 according to actual needs. In one possible implementation, when the locking portion 74 and the locked portion 64 are locked with each other, the flip cover 6 and the positioning seat 7 may contact each other in the first direction X.

[0192] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A positioning fixture, characterized in that: The device comprises a positioning seat and a pressing seat, wherein the pressing seat comprises a mounting seat and a flip cover connected in a first direction, and the mounting seat can move relative to the flip cover along the first direction so that the mounting seat can switch between a first position and a second position relative to the flip cover; The pressing seat is rotatably connected to the positioning seat through the flip cover, so that the positioning fixture can be switched between a folded state and an open state. When the positioning fixture is in the folded state, the pressing seat and the positioning seat are stacked in the first direction; The positioning seat is provided with: a guide portion and a first positioning portion for placing a first docking piece, and the mounting seat of the pressing seat is provided with: a guided portion corresponding to the guide portion, and a second positioning portion for placing a second docking piece; Furthermore, when the positioning fixture is in the folded state and the mounting seat is located at the first position relative to the flip cover, the guiding portion and the guided portion are separated from each other in the first direction, and the second docking member placed on the mounting seat and the first docking member placed on the positioning seat are separated from each other in the first direction; When the positioning fixture is in the folded state and the mounting seat switches from the first position to the second position relative to the flip cover, the mounting seat moves in the first direction toward the flip cover, and the guiding portion cooperates with the corresponding guided portion until the second docking piece placed on the mounting seat docks with the first docking piece placed on the positioning seat.

2. The positioning fixture according to claim 1, characterized in that: The mounting base includes a fixed block and a positioning block, wherein the positioning block is connected to a side of the fixed block close to the flip cover in the first direction and is movable relative to the fixed block in the first direction; the mounting base is connected to the flip cover via the fixed block, and the flip cover is provided with a first hollow portion along the first direction for the positioning block to pass through; Wherein, the second positioning portion includes: a sub-positioning portion 1 provided on the fixing block, and a sub-positioning portion 2 provided on the positioning block, and the guided portion is provided on the positioning block; When the positioning fixture is in the folded state and the mounting seat is located at the first position relative to the flip cover, the positioning block and the positioning seat are separated from each other in the first direction; When the positioning fixture is in the folded state and the mounting seat is located at a third position between the first position and the second position relative to the flip cover, the positioning block is connected to the positioning seat through the first hollow portion of the flip cover, the guiding portion is plugged into the guided portion, and the second docking member placed on the mounting seat and the first docking member placed on the positioning seat are separated from each other in the first direction; When the positioning fixture is in the folded state and the mounting seat switches from the third position to the second position relative to the flip cover, the fixing block moves in the first direction relative to the positioning block toward the positioning seat until the second docking piece docks with the first docking piece.

3. The positioning fixture according to claim 2, characterized in that: The sub-positioning portion 1 is configured as a mounting groove extending along the first direction, and a second hollow portion is formed at the bottom of the mounting groove; wherein the mounting groove of the fixing block is used to place the second docking member; The second sub-positioning portion is configured as: a first groove, the first groove being recessed from the top surface of the positioning block along the first direction toward the bottom surface, a boss being provided on the bottom surface of the positioning block, and a second groove being provided on the surface of the boss facing away from the positioning block; wherein a through hole is provided on the bottom surface of the first groove, the through hole extending to the bottom surface of the second groove, and the through hole being configured to allow the docking terminal of the second docking member in the mounting slot to pass through; In which, when the positioning fixture is in the open state, and when the positioning fixture is in the folded state and the mounting seat is in the first position relative to the flip cover, the end face of the docking terminal of the second docking piece in the mounting groove is located in the through hole of the positioning block; when the mounting seat is in the second position relative to the flip cover, the end face of the docking terminal of the second docking piece in the mounting groove is located outside the through hole of the positioning block and extends into the second groove.

4. The positioning fixture according to claim 2, characterized in that: The positioning fixture further includes a first connecting member, the fixing block and the positioning block are connected via the first connecting member, the first connecting member includes a fastening portion, a displacement portion, and a limiting portion that are sequentially connected and relatively fixed, the first connecting member is fixedly connected to the fixing block via the fastening portion, the positioning block is provided with a first connecting hole that passes through the positioning block along the first direction, the first connecting hole is provided with a limited portion at one end away from the fixing block, and the displacement portion is passed through the first connecting hole; When the positioning fixture is in the folded state and the mounting seat is in the first position relative to the flip cover or switches from the first position to the third position, the limiting portion of the first connecting member abuts against the limited portion to limit the movement of the fixing block relative to the positioning block in the first direction away from the positioning block; When the mounting seat switches from the third position to the second position relative to the flip cover, the displacement portion of the first connecting member slides relative to the first connecting hole of the positioning block, and the limiting portion and the limited portion are separated from each other.

5. The positioning fixture according to claim 4, characterized in that: The positioning fixture further includes a first elastic member, and two ends of the first elastic member along the first direction are respectively connected to the fixing block and the positioning block.

6. The positioning fixture according to claim 2, wherein: The positioning fixture further includes a second connecting member and a second elastic member, the fixing block and the flip cover are connected via the second connecting member and the second elastic member, and the two ends of the second elastic member along the first direction are respectively connected to the fixing block and the flip cover; The second connecting member includes a fastening portion, a displacement portion, and a limiting portion, which are sequentially connected and relatively fixed. The second connecting member is fixedly connected to the flip cover via the fastening portion. The fixing block is provided with a second connecting hole that passes through the fixing block along the first direction. The second connecting hole is provided with a limited portion at one end away from the flip cover. The displacement portion is passed through the second connecting hole. The limiting portion of the second connecting member is used to abut against the limited portion of the second connecting hole to limit the movement of the fixing block relative to the flip cover in the first direction away from the flip cover; When the mounting seat switches from the first position to the second position relative to the flip cover, the displacement portion of the second connecting member slides relative to the second connecting hole of the fixing block, and the limiting portion and the limited portion are separated from each other.

7. The positioning fixture according to claim 1, wherein: The guiding portion on the positioning seat is configured as a pin hole extending along the first direction, and the guided portion on the mounting seat is configured as a columnar structure extending along the first direction.

8. The positioning fixture according to claim 1, wherein: The flip cover is rotatably connected to the positioning seat via a rotating structure, the rotating structure comprising a rotating shaft frame and a connecting shaft, the rotating shaft frame being fixedly connected to the positioning seat, and the rotating shaft frame being provided with: a first shaft hole extending along the second direction; a protrusion being provided on the flip cover, the protrusion being provided with: a second shaft hole extending along the second direction; the connecting shaft being passed through the first shaft hole and the second shaft hole, so that the positioning seat is rotatably connected to the flip cover; The second direction is the axial direction of the connecting shaft, and the second direction is perpendicular to the first direction.

9. The positioning fixture according to claim 8, characterized in that: The rotating shaft frame is provided with a limiting structure; when the positioning fixture is in the open state, the limiting structure on the rotating shaft frame abuts against the flip cover.

10. The positioning fixture according to claim 9, wherein: When the positioning fixture is in the open state, the angle between the bottom surface of the flip cover and the top surface of the positioning seat is 100° to 120°.

11. The positioning fixture according to any one of claims 1 to 10, characterized in that: The positioning fixture further includes a locking structure, the locking structure including a locking portion and a locked portion, the locking portion is arranged on the positioning seat, and the locked portion is arranged on the flip cover; When the positioning clamp is in the open state, the locking portion and the locked portion are unlocked and separated from each other; when the positioning clamp is in the folded state, the locking portion and the locked portion are locked with each other, so that the flip cover and the positioning seat are fixed to each other.

12. The positioning fixture according to claim 11, wherein: The locking portion is a magnetic component, and the locked portion is a magnetically attracted component. When the positioning fixture is in the folded state, the magnetic component and the magnetically attracted component are attracted to each other. Furthermore, at least one of the magnetic attraction component and the magnetically attracted component is made of a magnetic material; wherein, when the material of one of the magnetic attraction component and the magnetically attracted component is set to a magnetic material, the material of the other is set to metal.

13. A testing device, characterized in that: A device comprising a printed circuit board, a first flexible circuit board, a test piece, and a positioning fixture according to any one of claims 1 to 12, wherein one end of the first flexible circuit board is fixed to and electrically connected to the test piece, and the other end of the first flexible circuit board is fixed to and electrically connected to the printed circuit board; The test piece is used to test a device under test, the device under test comprising a connection module, a second flexible circuit board, and an electronic device under test, one end of the second flexible circuit board being fixed to and electrically connected to the connection module, and the other end of the second flexible circuit board being fixed to and electrically connected to the electronic device under test; The first docking member is the connection module of the tested piece, and the second docking member is the testing piece; when the mounting seat is located at the second position relative to the flip cover, the testing piece contacts and is electrically connected with the connection module.

14. The testing device according to claim 13, wherein: The positioning fixture further includes a mounting plate, which is fixedly connected to the mounting seat so as to fix one end of the first flexible circuit board electrically connected to the test piece to the mounting seat.

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