Test fixture for lateral interface of middle frame of mobile phone

Abstract

The utility model provides a test fixture for a lateral interface of a middle frame of a mobile phone. The test fixture comprises a base; the first positioning assembly is arranged in the front surface positioning area of the front surface of the base; the second positioning assembly is arranged in a back surface positioning area on the back surface of the base; the first plugging assembly is used for testing the interface of the first middle frame in a plugging manner during sliding; and the second plugging assembly is used for testing the interface of the second middle frame in a plugging manner during sliding. The test fixture can respectively position different test objects in the front positioning area and the back positioning area through the first positioning assembly and the second positioning assembly, and can respectively test the different test objects through the first plugging assembly and the second plugging assembly. Therefore, the number and the types of the test jigs required to be used in the whole production process can be reduced, the jig input cost and the jig management cost are reduced, meanwhile, the switching frequency of the test jigs in different functional tests is reduced, and the test efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of electronic product testing, and in particular to a test fixture for the side interface of a mobile phone frame. Background Technology

[0002] Currently, the production process of electronic 3C products involves multiple processing steps. To ensure product quality, functional tests are required after some processing steps are completed. For example, in the manufacturing process of mobile phone interfaces, functional tests are typically performed after different processes. These functional tests include push force tests (such as testing the insertion of external connectors into the mobile phone interface) and pull force tests (such as testing the removal of external connectors from the mobile phone interface).

[0003] However, in related technologies, different test fixtures are required to complete different functional tests. The number and types of test fixtures used in the entire production process are large, which increases the cost of fixture investment and fixture management. Utility Model Content

[0004] In view of the above, it is necessary to provide a test fixture for the side interface of the mobile phone frame to solve the above technical problems.

[0005] This application provides a test fixture for a side interface of a mobile phone frame. The test fixture includes: a base, including a front and a back; a first positioning component disposed in a front positioning area on the front of the base; wherein the first positioning component is used to position a first mid-frame in the front positioning area so that the interface of the first mid-frame faces a first direction; a second positioning component disposed in a back positioning area on the back of the base; wherein the second positioning component is used to position a second mid-frame in the back positioning area so that the interface of the second mid-frame faces away from the first direction; a first plug-in component slidably connected to the base along the first direction to plug and unplug the interface of the first mid-frame during sliding; and a second plug-in component slidably connected to the base along the first direction to plug and unplug the interface of the second mid-frame during sliding.

[0006] The test fixture provided in this application allows for the following configuration when testing is required: a first middle frame is placed in the front positioning area and fixed by a first positioning component; a second middle frame is placed in the rear positioning area and fixed by a second positioning component. Then, the first plug-in component (first middle frame) is inserted into the interface of the first middle frame to complete the corresponding test, or the second plug-in component (second middle frame) is inserted into the interface of the second middle frame to complete the corresponding test. This allows the test fixture to simultaneously fix multiple test objects and perform different functional tests, reducing the number and types of test fixtures required in the entire production process, lowering fixture investment and management costs, and reducing the frequency of test fixture switching during different functional tests, thereby improving testing efficiency. Attached Figure Description

[0007] Figure 1 A schematic diagram showing the state of the test fixture provided in this application during a pull-out force test.

[0008] Figure 2 A schematic diagram of the state when performing a thrust test on the test fixture provided in this application.

[0009] Figure 3 This is a schematic diagram of the structure of the test object provided in this application.

[0010] Figure 4 This is a first-view structural schematic diagram of the test fixture provided in this application.

[0011] Figure 5 This is a structural schematic diagram of the test fixture provided in this application from a second perspective.

[0012] Figure 6 This is a cross-sectional schematic diagram of the test fixture provided in this application.

[0013] Figure 7 An exploded view of the first insertion / removal assembly and the first positioning assembly of the test fixture provided in this application.

[0014] Figure 8 for Figure 6 A magnified view of section VIII.

[0015] Figure 9 An exploded view of the second insertion / removal assembly and the second positioning assembly of the test fixture provided in this application.

[0016] Figure 10 A schematic diagram showing the state of a first type of middle frame positioned by the test fixture provided in this application.

[0017] Figure 11 A schematic diagram showing the positioning of a type of second middle frame using the test fixture provided in this application.

[0018] Figure 12 A schematic diagram showing the positioning of the second type of first middle frame by the test fixture provided in this application.

[0019] Figure 13 A schematic diagram showing the positioning of the second middle frame of the second type using the test fixture provided in this application.

[0020] Figure 14 A schematic diagram showing the positioning of the three types of first middle frames using the test fixture provided in this application.

[0021] Figure 15 A schematic diagram showing the positioning of the three types of second middle frames using the test fixture provided in this application.

[0022] Figure 16 A schematic diagram showing the positioning of the four types of first middle frames using the test fixture provided in this application.

[0023] Figure 17 A schematic diagram showing the positioning of the four types of second middle frames using the test fixture provided in this application.

[0024] Explanation of main component symbols

[0025] 100. Test fixture; 10. Base; 11. Front positioning area; 111. First slide groove; 12. Back positioning area; 121. Second slide groove; 13. Limiting block; 14. Elastic limiting element; 15. First receiving hole; 16. Damping block; 17. Accommodating hole; 18. Mounting position; 20. First positioning assembly; 21. Inner positioning block; 211. First inner positioning block; 212. Second inner positioning block; 2121. Second receiving hole; 213. Third inner positioning block; 22. 1. Cover plate; 221. First contact arm; 23. First connecting shaft; 231. First stop block; 24. First elastic element; 25. First outer positioning block; 26. First side pusher; 30. Second positioning assembly; 31. Support positioning block; 311. Positioning surface; 312. Support surface; 32. Second cover plate; 321. Second contact arm; 33. Second connecting shaft; 331. Second stop block; 34. Second elastic element; 35. Second outer positioning block; 36. Second side pusher; 40. First Insertion / removal assembly; 41. First push rod; 411. Snap-fit ​​hole; 412. Clearance hole; 42. First push head; 50. Second insertion / removal assembly; 51. Second push rod; 52. Second push head; 53. Sliding block; 60. Base plate; 70. Support block; 80. Locking element; 81. Blocking block; 82. Locking hole; 83. Rotating shaft; 831. Reset stop block; 84. Reset spring element; 200. Test power unit; 201. Worktable; 202. Bracket; 203. Pressure head; 300, Mid-frame; 301, Interface; 302, First end face; 303, Second end face; 304, First inner wall; 305, Second inner wall; 400, First mid-frame; 400A, Type I first mid-frame; 400B, Type II first mid-frame; 400C, Type III first mid-frame; 400D, Type IV first mid-frame; 500, Second mid-frame; 500A, Type I second mid-frame; 500B, Type II second mid-frame; 500C, Type III second mid-frame; 500D, Type IV second mid-frame. Detailed Implementation

[0026] This application provides a test fixture for the side interface of a mobile phone frame.

[0027] like Figures 1 to 3 As shown, the test fixture 100 can be applied to a testing device, which is used to perform functional tests on the test object after the manufacturing process. The testing device includes a test motor 200 and a test fixture 100. The test fixture 100 is used to fix the test object, and the test motor 200 is used to perform functional tests on the test object.

[0028] In the example of this application, the test object is the mid-frame 300 of a smartphone, which has an interface 301. The interior of the mid-frame 300 is hollow, and the interface 301 is a charging data I / O interface. The interface 301 is embedded and fixed in the mid-frame 300, and the interface 301 is exposed on the side of the mid-frame 300.

[0029] For example, the middle frame 300 is rectangular in shape, and the outer surfaces of the two sides of the middle frame 300 in the length direction form end faces. The end face of the middle frame 300 near the interface 301 forms a first end face 302, and the end face of the middle frame 300 away from the interface 301 forms a second end face 303, and the interface 301 passes through the first end face 302.

[0030] The inner surface of the middle frame 300 forms an inner wall. The inner wall of the middle frame 300 near the interface 301 forms a first inner wall 304, and the inner wall of the middle frame 300 away from the interface 301 forms a second inner wall 305. The interface 301 passes through the first inner wall 304, and the first inner wall 304 and the second inner wall 305 are distributed at intervals along a first direction.

[0031] The length direction is illustrated using the Z-axis as an example, and the width direction is illustrated using the Y-axis as an example.

[0032] In the example of this application, the test items of the test device are the push force test (such as the test of inserting an external connector into the mobile phone interface 301) and the pull force test (such as the test of pulling the external connector out of the mobile phone interface 301). It can be understood that the above two tests are both tests of the bonding force between the interface 301 and the middle frame 300.

[0033] The push force test and pull force test can be conducted after the molding process and the CNC (Computerized Numerical Control) process, respectively, of the mid-frame 300. The testing requirements for the molding process are: push force ≥ 80KGF and pull force ≥ 80KGF. The testing requirements for the CNC process are: push force ≥ 60KGF and pull force ≥ 60KGF.

[0034] It is understood that the above-mentioned test nodes and test requirements can be configured according to actual needs. For example, in other embodiments, the test nodes for thrust test and pull-out force test can also be after the anode, assembly and other processes. The corresponding test requirements can also be set according to the product structure. This application does not limit this.

[0035] In the example of this application, the test power machine 200 is a tensile testing machine, which includes a worktable 201, a support 202, a pressure head 203, and a power source (not shown in the figure). The support 202 is fixed to the worktable 201, and the pressure head 203 is located above the worktable 201. The pressure head 203 is connected to the power source, which drives the pressure head 203 to move along a first direction. Exemplarily, the first direction is the vertical direction.

[0036] The test fixture 100 includes multiple sets of plug-in components, which are movable along a first direction and are used to plug into the interface 301 of the middle frame 300. The plug-in components correspond to test items; in the example of this application, the test items include a push force test and a pull force test. Correspondingly, the plug-in components include a first plug-in component 40 and a second plug-in component 50. The test fixture 100 is detachably fixed to the worktable 201, and the plug-in components corresponding to the test fixture 100 are located below the pressure head 203.

[0037] like Figure 2 and Figure 3 As shown, the method for performing a thrust test on the middle frame 300 is as follows: the middle frame 300 is fixed to the test fixture 100 with the first end face 302 facing upward, so that the lower end of the first plug-in component 40 is aligned with the interface 301 of the middle frame 300 from top to bottom, and the upper end of the first plug-in component 40 is aligned with the pressure head 203; then, the pressure head 203 descends, and the pressure head 203 pushes the first plug-in component 40 to insert into the interface 301 from the first end face 302 of the middle frame 300, while the thrust test data is recorded to complete the thrust test.

[0038] like Figure 1 and Figure 3 As shown, the pull-out force test of the middle frame 300 can be performed as follows: the middle frame 300 is fixed to the test fixture 100 with the first inner wall 304 facing upward, so that the lower end of the second insertion component 50 is aligned with the interface 301 of the middle frame 300 from top to bottom, and the upper end of the second insertion component 50 is aligned with the pressure head 203; then, the pressure head 203 descends, and the pressure head 203 pushes the second insertion component 50 to insert into the interface 301 from the first inner wall 304 of the middle frame 300, while the pull-out force test data is recorded to complete the pull-out force test.

[0039] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the test fixture 100 includes a base 10, a first positioning component 20, a second positioning component 30, a first insertion / removal component 40, a second insertion / removal component 50, and a base plate 60. The base 10 includes a front side and a back side, with a front positioning area 11 formed on the front side and a back positioning area 12 formed on the back side. A gap exists between the front positioning area 11 and the back positioning area 12.

[0040] The first positioning component 20 is disposed in the front positioning area 11 of the base 10, and the second positioning component 30 is disposed in the rear positioning area 12 of the base 10.

[0041] In the example of this application, the front positioning area 11 and the back positioning area 12 can accommodate different test objects, so that the test fixture 100 can simultaneously fix multiple test objects. For ease of understanding, the test object accommodated in the front positioning area 11 is defined as the first middle frame 400, and the test object accommodated in the back positioning area 12 is defined as the second middle frame 500. The first middle frame 400 and the second middle frame 500 can be products of the same model but corresponding to different test items, or they can be products of different models.

[0042] The first positioning component 20 is used to position the first middle frame 400 in the front positioning area 11, so that the interface 301 of the first middle frame 400 faces the first direction. The second positioning component 30 is used to position the second middle frame 500 in the rear positioning area 12, so that the interface 301 of the second middle frame 500 faces away from the first direction. The first direction is exemplified by the negative direction of the Z-axis in the figure.

[0043] The first plug-in assembly 40 is slidably connected to the base 10 along the first direction and is disposed corresponding to the front positioning area 11. The second plug-in assembly 50 is slidably connected to the base 10 along the first direction and is disposed corresponding to the rear positioning area 12.

[0044] When the first plug-in assembly 40 moves along the first direction, the first plug-in assembly 40 can be plugged into or unplugged into the interface 301 of the first test object 400. When the second plug-in assembly 50 moves along the first direction, the second plug-in assembly 50 can be plugged into or unplugged into the interface 301 of the second middle frame 500.

[0045] The base plate 60 is located at one end of the base 10 and is used to fix the test power unit 200.

[0046] When testing is required, the first middle frame 400 can be placed in the front positioning area 11 and fixed by the first positioning component 20, and the second middle frame 500 can be placed in the rear positioning area 12 and fixed by the second positioning component 30. At this time, the first end face 302 of the first middle frame 400 is set downwards, and the first end face 302 of the second middle frame 500 is set upwards. Then, the base 10 is placed on the test power unit 200, and the test power unit 200 drives the first plug-in component 40 to move along the first direction, so that the first plug-in component 40 is inserted into the interface 301 of the first middle frame 400 from the first inner wall 304 of the first middle frame 400 to complete the corresponding test, or the test power unit 200 drives the second plug-in component 50 to move along the first direction, so that the second plug-in component 50 is inserted into the interface 301 of the second middle frame 500 from the first end face 302 of the second middle frame 500 to complete the corresponding test.

[0047] In the example of this application, the test object is a mid-frame 300 that has undergone processing. The first mid-frame 400 can be a mid-frame 300 that needs to be tested for pull-out force, and the second mid-frame 500 can be a mid-frame 300 that needs to be tested for thrust force.

[0048] When testing is required, the first middle frame 400 can be placed in the front positioning area 11 and fixed by the first positioning component 20, and the second middle frame 500 can be placed in the back positioning area 12 and fixed by the second positioning component 30. Then, the base 10 is set on the worktable 201 of the tensile testing machine. First, the first insertion and extraction component 40 is aligned with the pressure head 203 of the tensile testing machine. The pressure head 203 pushes the first insertion and extraction component 40 to insert into the interface 301 of the first middle frame 400 from the first inner wall 304 of the first middle frame 400 to complete the insertion and extraction force test. Then, the position of the base 10 is adjusted so that the second insertion and extraction component 50 is aligned with the pressure head 203 of the tensile testing machine. The pressure head 203 pushes the second insertion and extraction component 50 to insert into the interface 301 of the second middle frame 500 from the first end face 302 of the second middle frame 500 to complete the thrust test.

[0049] Thus, the test fixture 100 provided in this application can simultaneously fix multiple test objects and perform different functional tests, reducing the number and types of test fixtures 100 required in the entire production process, reducing fixture investment costs and fixture management costs, while also reducing the switching frequency of test fixtures 100 in different functional tests and improving testing efficiency.

[0050] It is worth noting that the test method in the above example is to first perform the insertion and extraction force test and then the thrust test. In practical applications, the order of the two functional tests can be reversed, or the two functional tests can also be performed when the tensile testing machine has multiple independently lifting pressure heads 203. This application does not impose any restrictions on this.

[0051] like Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, in one embodiment, the base 10 is generally plate-shaped. The length direction of the base 10 is parallel to a first direction, the width direction of the base 10 is parallel to a second direction, and the thickness direction of the base 10 is parallel to a third direction. The first and second directions form an angle, with the Y-axis direction shown in the figure serving as an example of the second direction. The first and second directions each form an angle with a third direction, with the X-axis direction shown in the figure serving as an example of the third direction.

[0052] For example, the front positioning area 11 and the back positioning area 12 are located on opposite sides of the base 10, with one front positioning area 11 and one back positioning area 12. Correspondingly, the first positioning component 20 and the second positioning component 30 are respectively disposed on opposite sides of the base 10. The first plug-in component 40 and the second plug-in component 50 are respectively disposed on opposite sides of the base 10.

[0053] This shortens the distance between the front positioning area 11 and the back positioning area 12, making it easier for users to pick up and place test objects in both areas. Furthermore, when testing is required, after the first insertion / removal assembly 40 is aligned with the pressure head 203 of the tensile testing machine, and the first middle frame 400 in the front positioning area 11 has completed its functional test, the base 10 can be rotated 180° horizontally to align the second insertion / removal assembly 50 with the pressure head 203 of the tensile testing machine. This improves the switching speed between different functional tests and increases testing efficiency.

[0054] In other embodiments, the distribution of the front positioning area 11 and the back positioning area 12 can also be adjusted according to actual needs. For example, the front positioning area 11 and the back positioning area 12 can be distributed at intervals along the width direction of the base 10, or the front positioning area 11 and the back positioning area 12 can be distributed in a circle around the base 10, and the width or shape of the base 10 can be configured accordingly. Furthermore, the number of the front positioning area 11 and the back positioning area 12 can also be adjusted according to actual needs. For example, the number of the front positioning area 11 / back positioning area 12 can also be greater than 1, and the number of the first positioning component 20 / second positioning component 30 and the number of the first plug-in component 40 / second plug-in component 50 can be configured accordingly. This application does not limit this.

[0055] In one embodiment, the first plug-in assembly 40 includes a first push rod 41 and a first push head 42. The first push rod 41 is slidably connected to the base 10 along a first direction. The first push head 42 is disposed at one end of the first push rod 41 to be inserted into or removed from the interface 301 of the first middle frame 400 when the first push rod 41 slides. Exemplarily, the first push head 42 is located within the front positioning area 11. The first push head 42 is provided with a plug adapted to the interface 301.

[0056] When the first middle frame 400 is placed in the front positioning area 11, the first pusher 42 can enter the interior of the first middle frame 400, and the plug of the first pusher 42 is aligned with the connector of the first middle frame 400 along the first direction. Thus, when the first push rod 41 is pressed down, the first pusher 42 can be inserted downward into the connector of the first middle frame 400 inside the first middle frame 400.

[0057] For example, the base 10 is provided with a first groove 111 on the side facing the front positioning area 11. The first groove 111 extends along a first direction and passes through the end of the base 10 away from the bottom plate 60.

[0058] The first push rod 41 is arranged parallel to the first direction, and the length of the first push rod 41 corresponds to the length of the front positioning area 11. The first push rod 41 is disposed in the first slide groove 111. The shape of the first push rod 41 is adapted to the internal space of the first slide groove 111 so that the first push rod 41 can slide within the first slide groove 111. The end of the first push rod 41 away from the base plate 60 is exposed at one end of the base 10 to form a force-bearing end, and the other end of the first push rod 41 passes through the front positioning area 11 to form a driving end. The first push head 42 is disposed on the side of the driving end facing the front positioning area 11.

[0059] It is understood that the first push rod 41 is housed in the first slide groove 111, which can avoid the first push rod 41 occupying the surface space of the base 10, so as to allow the first middle frame 400 to be placed stably in the front positioning area 11, while allowing the first push head 42 to enter the interior of the first middle frame 400.

[0060] During testing, the base 10 is set vertically, and the force-receiving end of the first push rod 41 is exposed at the top of the base 10. The pressure head 203 of the tensile testing machine can directly press down to contact the force-receiving end of the first push rod 41 to push the first push rod 41 to move.

[0061] In one embodiment, a limiting block 13 is provided on the side of the base 10 facing the front positioning area 11. The limiting block 13 is bolted to the base 10, the limiting block 13 is located in the front positioning area 11, and the limiting block 13 partially covers the first sliding groove 111.

[0062] Thus, the limiting block 13 limits the first push rod 41 within the first slide groove 111, preventing the first push rod 41 from disengaging from the first slide groove 111 and improving the sliding stability of the first push rod 41.

[0063] When the first middle frame 400 is placed in the front positioning area 11, the limiting block 13 can enter the interior of the first middle frame 400 to prevent the limiting block 13 from interfering with the first middle frame 400 and affecting the positioning effect of the first middle frame 400, thereby improving the test accuracy.

[0064] Furthermore, in some cases, the side of the limiting block 13 away from the base plate 60 can also be attached to the second inner wall 305 of the first middle frame 400 (see...). Figure 3 ), to position the first middle frame 400 along the first direction.

[0065] like Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, in one embodiment, the base 10 is provided with an elastic limiting member 14, and the side of the first push rod 41 facing the elastic limiting member 14 is provided with a snap-fit ​​hole 411. The first push rod 41 has a limited state and a non-limited state.

[0066] When the first push rod 41 is in the limited position, the first push rod 41 moves to the position where the elastic limiting member 14 is engaged with the locking hole 411, and the elastic limiting member 14 restricts the first push rod 41 from moving along the first direction.

[0067] When the first push rod 41 is in the non-limited state, the first push rod 41 moves to the position where the elastic limiting member 14 is disengaged from the snap hole 411, and the elastic limiting member 14 allows the first push rod 41 to move in the first direction.

[0068] Specifically, the position of the elastic limiting member 14 corresponds to the relative position of the first pusher member 42 and the first middle frame 400. When the first push rod 41 is in the limiting state, a first gap is formed between the plug of the first pusher member 42 and the first inner wall 304 of the first middle frame 400. At this time, because the elastic limiting member 14 restricts the first push rod 41 from moving in the first direction, the first pusher member 42 cannot be inserted into the interface 301 of the first middle frame 400.

[0069] When the first push rod 41 is in a non-limited state, a second gap is formed between the plug of the first push head 42 and the first inner wall 304 of the first middle frame 400. The second gap is smaller than the first gap. At this time, the elastic limiting member 14 does not restrict the first push rod 41 from moving in the first direction, allowing the first push head 42 to be inserted into the interface 301 of the first middle frame 400.

[0070] Thus, when it is necessary to place the first middle frame 400 into or remove the first middle frame 400 from the front positioning area 11, the first push rod 41 can be in a limited position to prevent the first push head 42 from interfering with the placement and removal of the first middle frame 400, facilitating operation. Before formal testing, the first push rod 41 can be in a non-limited position, allowing the first push rod 41 to drive the first push head 42 to move.

[0071] For example, the elastic limiting member 14 is a spring plunger, which is embedded in the base 10 and has a ball at one end.

[0072] When the first push rod 41 moves to the position where the locking hole 411 aligns with the elastic limiting member 14, the ball of the elastic limiting member 14 automatically pops out and locks into the locking hole 411, thus placing the first push rod 41 in a limited state. When it is necessary to switch the first push rod 41 to a non-limited state, force can be applied to the first push rod 41 to retract the ball of the elastic limiting member 14 into its interior, and the first push rod 41 can be moved to a position where the locking hole 411 and the elastic limiting member 14 are not aligned.

[0073] In one embodiment, the side of the first push rod 41 facing the base 10 is also provided with a clearance hole 412. The clearance hole 412 is located on the side of the snap-fit ​​hole 411 away from the drive end. There is a gap between the clearance hole 412 and the snap-fit ​​hole 411, and the clearance hole 412 is arranged parallel to the first direction.

[0074] When the first push rod 41 moves to the position where the clearance hole 412 aligns with the elastic limiting member 14, the ball of the elastic limiting member 14 automatically pops out and enters the clearance hole 412, putting the first push rod 41 in a non-limited state. At this time, if the first push rod 41 moves along the first direction, the ball of the elastic limiting member 14 can move relatively within the clearance hole 412. In this way, the friction between the ball of the elastic limiting member 14 and the first push rod 41 can be reduced during the test, thereby improving the test accuracy.

[0075] In some embodiments, the wall of the snap-fit ​​hole 411 facing the relief hole 412, and the wall of the relief hole 412 facing the snap-fit ​​hole 411, are both provided with inclined transition surfaces. This ensures smooth movement of the ball of the elastic limiting member 14 between the relief hole 412 and the snap-fit ​​hole 411, facilitating user operation.

[0076] like Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments, the first positioning component 20 includes an inner positioning block 21, which is disposed in the front positioning area 11 and is used to abut and position the first middle frame 400 along the second direction.

[0077] Specifically, when the first middle frame 400 is placed in the front positioning area 11, the inner positioning block 21 can enter the interior of the first middle frame 400 and position the first middle frame 400 along the second direction.

[0078] For example, the size of the inner positioning block 21 is set to correspond to the inner width of the first middle frame 400. When the first middle frame 400 is placed in the front positioning area 11, the two ends of the inner positioning block 21 in the second direction are attached to or close to the inner walls of the two sides of the first middle frame 400 in the second direction to achieve the positioning effect.

[0079] Meanwhile, the inner positioning block 21 partially blocks the first slide groove 111 to limit the first push rod 41 within the first slide groove 111, thereby further improving the sliding stability of the first push rod 41.

[0080] In some embodiments, the inner positioning block 21 is detachably connected to the base 10. For example, the base 10 is provided with a plurality of mounting positions 18, which are spaced apart along a first direction. Each mounting position 18 is provided with a plurality of mounting holes, and the inner positioning block 21 is bolted and fixed to the mounting holes of the mounting position 18.

[0081] It is understood that the inner positioning block 21 can be repeatedly installed and removed from the mounting position 18 of the base 10. In practical applications, the inner positioning block 21 can be replaced according to the required inner width of the first middle frame 400 to be suitable for positioning different middle frames 300, thereby improving versatility.

[0082] In some embodiments, the number of inner positioning blocks 21 is greater than or equal to two, and the multiple inner positioning blocks 21 are respectively disposed in different mounting positions 18. For example, the number of inner positioning blocks 21 is two, specifically divided into a first inner positioning block 211 and a second inner positioning block 212. The first inner positioning block 211 is located in the middle of the first middle frame 400 near the interface 301, and the second inner positioning block 212 is located in the middle of the first middle frame 400 away from the interface 301. Thus, the first inner positioning block 211 and the second inner positioning block 212 can simultaneously position the first middle frame 400 from different positions, improving positioning stability.

[0083] It is worth noting that the number of inner positioning blocks 21 can be determined according to actual needs. For example, the number of inner positioning blocks 21 in the figure is 2. In other embodiments, the number of inner positioning blocks 21 can also be greater than 2, and the length of the inner positioning blocks 21 can also be configured according to actual needs. This application does not impose any restrictions on this.

[0084] In some embodiments, the first positioning component 20 further includes a first cover plate 22, which is rotatably connected to the inner positioning block 21 so that the first cover plate 22 can rotate on the front side of the base 10 and limit the first middle frame 400.

[0085] For example, the first cover plate 22 is rotatably connected to the first inner positioning block 211 via the first connecting shaft 23, the first connecting shaft 23 is parallel to the third direction, and there is a gap between the first cover plate 22 and the base 10.

[0086] When the first middle frame 400 is placed in the front positioning area 11 and the first cover plate 22 is rotated to the first angle, the first cover plate 22, together with the base 10, positions the first middle frame 400 in a third direction. When the first cover plate 22 is rotated to the second angle, the first cover plate 22 is allowed to pass through the first middle frame 400.

[0087] Specifically, the middle part of the first cover plate 22 is connected to the first connecting shaft 23, and the two ends of the first cover plate 22 are provided with first contact arms 221, which are used to contact the first middle frame 400. The distance between the first cover plate 22 and the base 10 corresponds to the thickness of the first middle frame 400, and the first angle and the second angle differ by 90°.

[0088] When the first middle frame 400 is placed in the front positioning area 11 and the first cover plate 22 is rotated to the first angle, the first contact arm 221 of the first cover plate 22 is arranged parallel to the second direction, and the first contact arm 221 of the first cover plate 22 lightly touches the surface of the first middle frame 400 away from the base 10 to achieve a positioning effect. When the first cover plate 22 is rotated to the second angle, the first contact arm 221 of the first cover plate 22 is arranged parallel to the first direction, and the first cover plate 22 as a whole can pass through the interior of the first middle frame 400, so that the user can place the first middle frame 400 in the front positioning area 11.

[0089] For example, the first cover plate 22 is integrally molded from an elastic material such as plastic, so that the first cover plate 22 and the first contact arm 221 have a certain degree of flexibility and elasticity. The middle part of the first contact arm 221 is hollowed out, and the thickness of the first contact arm 221 gradually decreases away from the middle of the first cover plate 22. In this way, while ensuring that the first contact arm 221 has a positioning effect on the first middle frame 400, the squeezing effect of the first contact arm 221 on the first middle frame 400 is reduced, thereby improving the detection accuracy on the one hand and preventing damage to the appearance of the first middle frame 400 on the other.

[0090] In some embodiments, the first connecting shaft 23 passes through the inner positioning block 21 and is slidably connected to the base 10. A first elastic member 24 is provided between the first connecting shaft 23 and the base 10. The first elastic member 24 is used to drive the first connecting shaft 23 to move in a third direction and bring the first cover plate 22 closer to the base 10. In this way, the first elastic member 24 can keep the first cover plate 22 in contact with the first middle frame 400, improving the positioning effect of the first cover plate 22.

[0091] On the other hand, by moving the first connecting shaft 23 along a third direction, the distance between the first cover plate 22 and the substrate can be adjusted to accommodate positioning of the first middle frame 400 of different thicknesses, thereby improving versatility.

[0092] For example, the first connecting shaft 23 is connected to the first inner positioning block 211. The first inner positioning block 211, the first push rod 41 and the base 10 are all provided with a first through hole for the first connecting shaft 23 to pass through, and the first through hole of the first push rod 41 is arranged parallel to the first direction.

[0093] The end of the first connecting shaft 23 away from the first cover plate 22 passes through the first inner positioning block 211, the first push rod 41, and the base 10, and is provided with a first stop block 231. The side of the base 10 away from the first cover plate 22 is provided with a first receiving hole 15, the first connecting shaft 23 passes through the first receiving hole 15, and the first stop block 231 blocks the opening of the first receiving hole 15.

[0094] The first elastic element 24 is a compression spring. The first elastic element 24 is disposed in the first receiving hole 15 and is sleeved on one end of the first connecting shaft 23 that passes through the first receiving hole 15. One end of the first elastic element 24 abuts against the first stop block 231, and the other end of the first elastic element 24 abuts against the bottom wall of the first receiving hole 15.

[0095] When the first cover plate 22 moves away from the base 10, the first stop block 231 cooperates with the base 10 to compress the first elastic member 24. When the first elastic member 24 is released, the first elastic member 24 pushes the first stop block 231 to move relative to the base 10, so that the first cover plate 22 moves towards the base 10.

[0096] In some embodiments, the first positioning component 20 further includes a first outer positioning block 25 and a first side pusher 26. The first outer positioning block 25 is disposed on the back side of the base 10. The first side pusher 26 is disposed on the back side of the base 10 to push the first middle frame 300 against the first outer positioning block 25 under the pushing action of the first side pusher 26. The first side pusher 26 and the first outer positioning block 25 are spaced apart along a second direction, and the front positioning area 11 is located between the first side pusher 26 and the first outer positioning block 25.

[0097] When the first middle frame 400 is placed in the front positioning area 11, the first side pusher 26 can push the first middle frame 400 and cooperate with the first outer positioning block 25 to position the first middle frame 400 in the second direction.

[0098] For example, the distance between the first outer positioning block 25 and the first side pusher 26 corresponds to the outer width of the first middle frame 400. When the first middle frame 400 is placed in the front positioning area 11, the first outer positioning block 25 and the first side pusher 26 are respectively attached to the two sides of the first middle frame 400 in the second direction to achieve the positioning effect.

[0099] The first side pusher 26 is a telescopic spring positioning pin. A telescopic contact head is provided on the side of the first side pusher 26 facing the front positioning area 11, and a compression spring is built into the first side pusher 26 to push the contact head in a second direction. The first side pusher 26 pushes the contact head to contact the first middle frame 400 through the compression spring to position the first middle frame 400.

[0100] Thus, the first side pusher 26 contacts the first middle frame 400 through the retractable contact head, achieving the effect of lightly touching the first middle frame 400. While ensuring the positioning effect, the squeezing action of the first side pusher 26 and the first outer positioning block 25 on the first middle frame 400 improves the detection accuracy on the one hand, and prevents damage to the appearance of the first middle frame 400 on the other hand.

[0101] In some embodiments, there are multiple sets of the first outer positioning block 25 and the first side pusher 26, and these sets are spaced apart along a first direction. For example, there are two sets of the first outer positioning block 25 and the first side pusher 26, with each set located at one end of the front positioning area 11. Thus, multiple sets of the first outer positioning block 25 and the first side pusher 26 can be simultaneously positioned at both ends of the first middle frame 400, improving positioning stability.

[0102] In some embodiments, a support block 70 is provided on the front side of the base 10. When the first middle frame 400 is placed in the front positioning area 11, the support block 70 supports the first end face 302 of the first middle frame 400 along a first direction. Thus, when the first pusher 42 is inserted downward into the interface 301 of the first middle frame 400, the support block 70 can support the first middle frame 400 upward, ensuring that the test can be carried out smoothly.

[0103] like Figure 2 , Figure 4 , Figure 6 and Figure 9 As shown, in one embodiment, the second plug-in assembly 50 includes a second push rod 51 and a second push head 52. The second push rod 51 is slidably connected to the base 10 along a first direction, and is located at the end of the base 10 away from the bottom plate 60. The second push head 52 is disposed at the end of the second push rod 51 facing the rear positioning area 12, for insertion or removal from the interface 301 of the second middle frame 500 when the second push rod 51 slides. The second push head 52 is provided with a plug adapted to the interface 301.

[0104] When the second middle frame 500 is placed in the rear positioning area 12, the second pusher 52 can be aligned with the connector of the second middle frame 500 from the outside of the second middle frame 500 along the first direction. Specifically, when the second middle frame 500 is placed in the rear positioning area 12, the second pusher 52 is located directly above the second middle frame 500. When the second push rod 51 is pressed down, the second pusher 52 can be inserted downward into the connector of the second middle frame 500 from the outside of the second middle frame 500.

[0105] For example, a second groove 121 is provided on the side of the base 10 facing the rear positioning area 12. The second groove 121 extends along a first direction and passes through the end of the base 10 away from the bottom plate 60. A sliding block 53 is provided on the side of the second push rod 51 facing the base 10. The sliding block 53 is arranged parallel to the first direction and is slidably connected to the second groove 121 so that the second push rod 51 is slidably connected to the base 10.

[0106] During testing, the base 10 is set vertically, and the upper end of the second push rod 51 is exposed at the top of the base 10. The pressure head 203 of the tensile testing machine can directly press down to contact the upper end of the second push rod 51 to push the second push rod 51 to move.

[0107] In one embodiment, the base 10 is provided with a locking member 80, which is rotatably connected to the base 10 and has a locking state and a releasing state that can be switched by rotation.

[0108] When the locking member 80 is in the locked state, it restricts the movement of the second push rod 51 in the first direction. When the locking member 80 is in the released state, it allows the second push rod 51 to move in the first direction.

[0109] For example, one end of the locking member 80 is rotatably connected to the base 10, and the other end of the locking member 80 is provided with a blocking block 81. When the locking member 80 is rotated to the released state, the locking member 80 is parallel to the first direction, and the blocking block 81 and the second push rod 51 are spaced apart in the second direction. When the locking member 80 is rotated to the locked state, the locking member 80 is parallel to the second direction, and the blocking block 81 can interfere with the position of the second push rod 51.

[0110] When the locking member 80 is in the locked state and the second push rod 51 is located at the position where the second push head member 52 is not inserted into the interface 301, the blocking block 81 of the locking member 80 is located at one end of the second push rod 51 close to the second push head member 52, and the blocking block 81 of the locking member 80 overlaps with the end face of the second push rod 51 in the first direction, and the blocking block 81 of the locking member 80 prevents the second push rod 51 from moving in the first direction.

[0111] In some embodiments, a damping block 16 is provided between the locking member 80 and the base 10, the damping block 16 being used to position the locking member 80 in a locked state. For example, one end of the damping block 16 is embedded and fixed to the base 10, and the other end of the damping block 16 is hemispherical and protrudes from the surface of the base 10. The locking member 80 is provided with a locking hole 82. When the locking member 80 is in the locked state, the damping block 16 engages with the locking hole 82 to position the locking member 80 in the locked state, preventing the locking member 80 from rotating on its own in its natural state. When the locking member 80 is in the released state, the damping block 16 disengages from the locking hole 82, and the locking member 80 can rotate freely.

[0112] For example, the locking member 80 is rotatably connected to the base 10 via a rotating shaft 83. The rotating shaft 83 passes through the base 10 and is slidably connected to the base 10. A reset spring member 84 is provided between the rotating shaft 83 and the base 10. The reset spring member 84 is used to drive the rotating shaft 83 to move in a third direction and bring the locking member 80 closer to the base 10.

[0113] When it is necessary to switch the locked or released state of the locking element 80, force can be applied to the locking element 80 first to move it away from the base 10, then the locking element 80 can be rotated to the corresponding angle, and finally the force applied to the locking element 80 can be stopped so that the locking element 80 automatically approaches the base 10 under the action of the reset spring 84. In this way, the positioning effect of the damping block 16 on the locking element 80 can be reduced when the user rotates to switch the locking element 80, making the operation more convenient for the user.

[0114] Specifically, the end of the rotating shaft 83 away from the locking member 80 passes through the base 10 and is provided with a reset stop 831. The side of the base 10 away from the locking member 80 is provided with a receiving hole 17, the rotating shaft 83 passes through the receiving hole 17, and the reset stop 831 blocks the opening of the receiving hole 17.

[0115] The reset spring 84 is a compression spring, which is disposed in the receiving hole 17 and sleeved on one end of the rotating shaft 83 that passes through the receiving hole 17. One end of the reset spring 84 abuts against the reset stop 831, and the other end of the reset spring 84 abuts against the bottom wall of the receiving hole 17.

[0116] When the locking member 80 moves away from the base 10, the reset stop 831 cooperates with the base 10 to compress the reset spring member 84. When the reset spring member 84 is released, the reset spring member 84 pushes the reset stop 831 to move relative to the base 10, so that the locking member 80 moves closer to the base 10.

[0117] In some embodiments, the second positioning component 30 includes a support positioning block 31 disposed in the rear positioning area 12, and the support positioning block 31 is used to abut against and position the second middle frame 500 along the second direction.

[0118] Specifically, the support positioning block 31 forms positioning surfaces 311 on opposite sides in the second direction. When the second middle frame 500 is placed in the rear positioning area 12, the support positioning block 31 can enter the interior of the second middle frame 500 and position the second middle frame 500 along the second direction through the positioning surfaces 311.

[0119] For example, the distance between the two sides of the support positioning block 31 corresponds to the inner width of the second middle frame 500. When the second middle frame 500 is placed in the back positioning area 12, the positioning surfaces 311 on both sides of the support positioning block 31 respectively fit against the inner walls of the two sides of the second middle frame 500 in the second direction to achieve the positioning effect.

[0120] Meanwhile, the support positioning block 31 partially blocks the second slide groove 121 to limit the sliding block 53 within the second slide groove 121, thereby improving the sliding stability of the second push rod 51.

[0121] In some embodiments, the side of the support positioning block 31 facing the second insertion assembly 50 forms a support surface 312. When the second middle frame 500 is placed in the rear positioning area 12, the support surface 312 supports the first inner wall 304 of the second middle frame 500 along a first direction. Thus, when the second pusher 52 is inserted downward into the interface 301 of the second middle frame 500, the support positioning block 31 can support the second middle frame 500 upward through the support surface 312, ensuring smooth testing.

[0122] In some embodiments, the second positioning component 30 further includes a second cover plate 32, which is rotatably connected to the back of the base 10 so that the second cover plate 32 can rotate on the back of the base 10 and limit the positioning of the second middle frame 500. For example, the second cover plate 32 is rotatably connected to the base 10 via a second connecting shaft 33 parallel to a third direction, and there is a gap between the second cover plate 32 and the base 10.

[0123] When the second middle frame 500 is placed in the rear positioning area 12 and the second cover plate 32 is rotated to the third angle, the second cover plate 32, in conjunction with the base 10, positions the second middle frame 500 along the third direction. When the second cover plate 32 is rotated to the fourth angle, the second cover plate 32 is allowed to pass through the second middle frame 500.

[0124] Specifically, the middle part of the second cover plate 32 is connected to the second connecting shaft 33, and the two ends of the second cover plate 32 are provided with second contact arms 321, which are used to contact the second middle frame 500. The distance between the second cover plate 32 and the base 10 corresponds to the thickness of the second middle frame 500, and the third angle and the fourth angle differ by 90°.

[0125] When the second middle frame 500 is placed in the rear positioning area 12 and the second cover plate 32 is rotated to the third angle, the second contact arm 321 of the second cover plate 32 is arranged parallel to the second direction, and the second contact arm 321 of the second cover plate 32 lightly touches the surface of the second middle frame 500 away from the base 10 to achieve a positioning effect. When the second cover plate 32 is rotated to the fourth angle, the second contact arm 321 of the second cover plate 32 is arranged parallel to the first direction, and the second cover plate 32 as a whole can pass through the interior of the second middle frame 500, so that the user can place the second middle frame 500 in the rear positioning area 12.

[0126] For example, the structure of the second cover plate 32 corresponds to the structure of the first cover plate 22. The second cover plate 32 is integrally molded from an elastic material such as plastic, so that the second cover plate 32 and the second contact arm 321 have a certain degree of flexibility and elasticity. The middle part of the second contact arm 321 is hollowed out, and the thickness of the second contact arm 321 gradually decreases away from the middle part of the second cover plate 32. In this way, while ensuring that the second contact arm 321 has a positioning effect on the second middle frame 500, the squeezing effect of the second contact arm 321 on the second middle frame 500 is reduced, thereby improving the detection accuracy on the one hand and preventing damage to the appearance of the second middle frame 500 on the other.

[0127] In some embodiments, the second connecting shaft 33 passes through the base 10 and is slidably connected to the first positioning component 20. A second elastic member 34 is provided between the second connecting shaft 33 and the first positioning component 20. The second elastic member 34 is used to drive the second connecting shaft 33 to move in a third direction and bring the second cover plate 32 closer to the base 10. In this way, the second elastic member 34 can keep the second cover plate 32 in contact with the second middle frame 500, improving the positioning effect of the second cover plate 32.

[0128] On the other hand, by moving the second connecting shaft 33 along a third direction, the distance between the second cover plate 32 and the substrate can be adjusted to accommodate positioning of the second middle frame 500 with different thicknesses, thereby improving versatility.

[0129] For example, the second connecting shaft 33 is connected to the second inner positioning block 212. The second inner positioning block 212, the first push rod 41 and the base 10 are all provided with a second through hole for the second connecting shaft 33 to pass through, and the second through hole of the first push rod 41 is arranged parallel to the first direction.

[0130] The end of the second connecting shaft 33 away from the second cover plate 32 passes through the second inner positioning block 212, the first push rod 41, and the base 10, and is provided with a second stop block 331. The side of the second inner positioning block 212 away from the second cover plate 32 is provided with a second receiving hole 2121, the second connecting shaft 33 passes through the second receiving hole 2121, and the second stop block 331 blocks the opening of the second receiving hole 2121.

[0131] The second elastic element 34 is a compression spring. The second elastic element 34 is disposed in the second receiving hole 2121 and is sleeved on one end of the second connecting shaft 33 that passes through the second receiving hole 2121. One end of the second elastic element 34 abuts against the second stop block 331, and the other end of the second elastic element 34 abuts against the bottom wall of the second receiving hole 2121.

[0132] When the second cover plate 32 moves away from the base 10, the second stop block 331 cooperates with the second inner positioning block 212 to compress the second elastic member 34. When the second elastic member 34 is released, the second elastic member 34 pushes the second stop block 331 to move relative to the base 10, so that the second cover plate 32 moves towards the base 10.

[0133] In some embodiments, the second positioning component 30 further includes a second outer positioning block 35 and a second side pusher 36. The second outer positioning block 35 is disposed on the back side of the base 10. The second side pusher 36 is disposed on the back side of the base to push the second middle frame 500 against the second outer positioning block 35 under the pushing action of the second side pusher 36. The second side pusher 36 and the second outer positioning block 35 are spaced apart along a second direction, and the back positioning area 12 is located between the second side pusher 36 and the second outer positioning block 35.

[0134] When the second middle frame 500 is placed in the rear positioning area 12, the second side pusher 36 can push the second middle frame 500 and cooperate with the second outer positioning block 35 to position the second middle frame 500 along the second direction.

[0135] For example, the distance between the second outer positioning block 35 and the second side pusher 36 corresponds to the outer width of the second middle frame 500. When the second middle frame 500 is placed in the back positioning area 12, the second outer positioning block 35 and the second side pusher 36 are respectively attached to the two sides of the second middle frame 500 in the second direction to achieve the positioning effect.

[0136] The second side pusher 36 is a telescopic spring positioning pin. A telescopic contact head is provided on the side of the second side pusher 36 facing the rear positioning area 12, and a compression spring is built into the second side pusher 36 to push the contact head along a second direction. The second side pusher 36 uses the compression spring to push the contact head to contact the second middle frame 500, thereby positioning the second middle frame 500.

[0137] Thus, the second side pusher 36 contacts the second middle frame 500 through the retractable contact head, achieving the effect of lightly touching the second middle frame 500. While ensuring the positioning effect, the squeezing action of the second side pusher 36 and the second outer positioning block 35 on the second middle frame 500 improves the detection accuracy on the one hand, and prevents damage to the appearance of the second middle frame 500 on the other hand.

[0138] In some embodiments, there are multiple sets of the second outer positioning block 35 and the second side pusher 36, and these sets are spaced apart along a first direction. For example, there are two sets of the second outer positioning block 35 and the second side pusher 36, with each set located at one end of the rear positioning area 12. Thus, multiple sets of the second outer positioning block 35 and the second side pusher 36 can be simultaneously positioned at both ends of the second middle frame 500, improving positioning stability.

[0139] like Figure 1 and Figure 7 As shown, it is worth noting that in the example of this application, the components with positioning function in the front positioning area 11 include a first inner positioning block 211, a second inner positioning block 212, a first cover plate 22, a first outer positioning block 25, a first side pusher 26, and a limiting block 13. In practical applications, the test fixture 100 can position the first middle frame 400 by one or more combinations of the first inner positioning block 211, the second inner positioning block 212, the first cover plate 22, the first outer positioning block 25, the first side pusher 26, and the limiting block 13, which can be configured according to actual needs.

[0140] like Figure 2 and Figure 9 As shown, the positioning components of the rear positioning area 12 include a support positioning block 31, a second cover plate 32, a second outer positioning block 35, and a second side pusher 36. In practical applications, the test fixture 100 can position the second middle frame 500 using one or more combinations of the support positioning block 31, the second cover plate 32, the second outer positioning block 35, and the second side pusher 36, which can be configured according to actual needs.

[0141] For ease of understanding, the following description uses different models of the middle frame 300 as examples. There are four models of the middle frame 300, each corresponding to a different size. The first middle frame 400 for these four models is defined as: Class I first middle frame 400A, Class II first middle frame 400B, Class III first middle frame 400C, and Class IV first middle frame 400D. Correspondingly, the second middle frame 500 for these four models is defined as: Class I second middle frame 500A, Class II second middle frame 500B, Class III second middle frame 500C, and Class IV second middle frame 500D.

[0142] like Figure 10 and Figure 11 As shown, when a first type of middle frame 400A is fixed to the front positioning area 11, the first inner positioning block 211 and the second inner positioning block 212 respectively position the first type of middle frame 400A, while the first cover plate 22 positions the first type of middle frame 400A.

[0143] When a second middle frame 500A is fixed to the rear positioning area 12, the support positioning block 31 positions the second middle frame 500A, and at the same time the second cover plate 32 positions the second middle frame 500A.

[0144] like Figure 7 , Figure 12 and Figure 13 As shown, the base 10 can be provided with three inner positioning blocks 21, namely: a first inner positioning block 211, a second inner positioning block 212, and a third inner positioning block 213. The length of the third inner positioning block 213 is greater than the lengths of the first inner positioning block 211 and the second inner positioning block 212. The third inner positioning block 213 is installed on the mounting position 18 located between the first inner positioning block 211 and the second inner positioning block 212. When the second-class first middle frame 400B is fixed to the front positioning area 11, the third inner positioning block 213 positions the second-class first middle frame 400B, and simultaneously the first cover plate 22 positions the second-class first middle frame 400B.

[0145] When the second type of second frame 500B is fixed to the back positioning area 12, the support positioning block 31 positions the second type of second frame 500B, and at the same time the second cover plate 32 positions the second type of second frame 500B.

[0146] like Figure 14 and Figure 15 As shown, when the three types of first middle frames 400C are fixed to the front positioning area 11, the two sets of first outer positioning blocks 25 and the first side pusher 26 respectively position the two ends of the three types of first middle frames 400C. At the same time, the first cover plate 22 positions the three types of first middle frames 400C, and the limiting block 13 is close to the inner wall of the three types of first middle frames 400C.

[0147] When the third type of second middle frame 500C is fixed to the rear positioning area 12, the two sets of second outer positioning blocks 35 and the second side pusher 36 respectively position the two ends of the third type of second middle frame 500C, while the second cover plate 32 positions the third type of second middle frame 500C.

[0148] like Figure 16 and Figure 17As shown, when the four types of first middle frames 400D are fixed to the front positioning area 11, the two sets of first outer positioning blocks 25 and the first side pushers 26 respectively position the two ends of the four types of first middle frames 400D, while the first cover plate 22 positions the four types of first middle frames 400D.

[0149] When the fourth type of second middle frame 500D is fixed to the back positioning area 12, the two sets of second outer positioning blocks 35 and the second side pusher 36 respectively position the two ends of the fourth type of second middle frame 500D, while the second cover plate 32 positions the fourth type of second middle frame 500D.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A test fixture for the side interface of a mobile phone frame, characterized in that, The test fixture includes: The base includes the front and the back; A first positioning component is disposed on the front positioning area of ​​the base; wherein, the first positioning component is used to position the first middle frame in the front positioning area so that the interface of the first middle frame faces the first direction. A second positioning component is disposed on the back positioning area of ​​the back side of the base; wherein, the second positioning component is used to position the second middle frame in the back positioning area so that the interface of the second middle frame is opened away from the first direction; A first plug-in component is slidably connected to the base along the first direction to plug and unplug the interface of the first mid-frame during sliding. The second plug-in component is slidably connected to the base along the first direction to plug and unplug the interface of the second middle frame during sliding.

2. The test fixture according to claim 1, characterized in that, The first plug-in / plug-out assembly includes: The first push rod is slidably connected to the base along the first direction; A first pusher is disposed at one end of the first push rod to be inserted into or removed from the interface of the first middle frame when the first push rod slides.

3. The test fixture according to claim 1, characterized in that, The first positioning component includes: An inner positioning block is disposed within the front positioning area and is used to abut against and position the first middle frame along the second direction.

4. The test fixture according to claim 3, characterized in that, The first positioning component further includes: The first cover plate is rotatably connected to the inner positioning block so as to rotate on the front side of the base to limit the position of the first middle frame.

5. The test fixture according to claim 1, characterized in that, The first positioning component includes: The first outer positioning block is disposed on the back of the base; A first side pusher is disposed on the back of the base to push the first middle frame against the first outer positioning block under the push of the first side pusher.

6. The test fixture according to claim 1, characterized in that, A support block is provided on the front side of the base; when the first middle frame is placed in the front positioning area, the support block supports the first end face of the first middle frame along the first direction.

7. The test fixture according to claim 1, characterized in that, The second plug-in assembly includes: The second push rod is slidably connected to the base along the first direction; The second pusher is disposed at one end of the second push rod facing the rear positioning area, so as to be inserted into or pulled out from the interface of the second middle frame when the second push rod slides.

8. The test fixture according to claim 1, characterized in that, The second positioning component includes: A support positioning block is disposed in the rear positioning area and is used to abut against and position the second middle frame along the second direction.

9. The test fixture according to claim 1, characterized in that, The second positioning component includes: The second cover plate is rotatably connected to the back of the base so as to rotate on the back and limit the position of the second middle frame.

10. The test fixture according to claim 1, characterized in that, The second positioning component includes: The second outer positioning block is disposed on the back of the base; The second side pusher is disposed on the back of the base so as to push the second middle frame against the second outer positioning block under the push of the second side pusher.

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