Test fixture

Abstract

The utility model relates to a test fixture which comprises a base and a test piece 5, the base is used for fixing a to-be-tested product, the test piece is provided with a sampling part capable of rotating relative to the base, the sampling part is provided with a switching point, and the switching point can make contact with a test point on the to-be-tested product on the base when the sampling part rotates so as to test the to-be-tested product; according to the test fixture, the to-be-tested product is fixed through the base, and the test is carried out in a mode that the sampling points on the sampling part are in direct contact with the test points of the to-be-tested product on the base; therefore, an unnecessary signal switching part generated during signal connection of the to-be-tested product can be transferred to the to-be-tested product, so that redundant switching during signal connection of the to-be-tested product and the test fixture is reduced, and parts required for manufacturing the test fixture are greatly reduced; therefore, the purpose of simplifying the test steps and the structure of the whole test fixture is achieved, and the manufacturing cost of the test fixture is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of display screen testing, and in particular to a testing fixture. Background Art

[0002] As the demand for electronic products continues to rise, the demand for display screens, one of the main components, is also increasing. In order to reduce the outflow of defective display screen components and ensure product quality, current display screens need to be tested before and after assembling auxiliary parts such as the plastic frame hook and other auxiliary parts.

[0003] Whether it is a display screen before or after assembly, it must be loaded on a carrier before testing. However, the current products to be tested have redundant connections when connecting signals to the test fixture, which not only makes the test steps cumbersome, but also requires more parts, a complex structure, and a high cost. Utility Model Content

[0004] Based on this, it is necessary to provide a test fixture to address the problems of the above-mentioned test fixture having a complex structure, high cost and cumbersome test steps.

[0005] A test fixture, comprising:

[0006] Base, used to fix the product to be tested;

[0007] A test piece is arranged on the base, and the test piece has a sampling component that can rotate relative to the base. The sampling component has a transfer point. When the sampling component rotates, the transfer point can contact the test point on the product to be tested on the base to test the product to be tested.

[0008] In one of the embodiments, the test piece is detachably disposed on the base.

[0009] In one embodiment, the test piece includes a first mounting component, a second mounting component and a sampling component, the first mounting component is arranged on the base, the second mounting component is rotatably arranged on the first mounting component, and the sampling component is arranged on the second mounting component and can contact the first mounting component when the second mounting component rotates relative to the first mounting component.

[0010] In one embodiment, the sampling component is detachably disposed on the second mounting component.

[0011] In one embodiment, the base is provided with a receiving groove opened along a first direction, the receiving groove has a first side surface perpendicular to the first direction and a second side surface parallel to the first direction, a supporting member is provided on the first side surface, and a positioning member is provided on the second side surface.

[0012] In one embodiment, the accommodating groove has two second side surfaces arranged in parallel, and each of the second side surfaces is provided with at least two positioning members.

[0013] In one embodiment, the positioning member has a positioning surface facing away from the second side surface, and the positioning surface is parallel to the second side surface.

[0014] In one embodiment, the positioning surface and the second side surface are connected and transitioned by an arc surface.

[0015] In one embodiment, the support member has a placement surface facing the notch of the accommodating groove, and the placement surface is parallel to the first side surface.

[0016] In one embodiment, the test fixture further includes a pressing piece, which is detachably disposed on the base, and a pressing portion is provided on the pressing piece, and an orthographic projection of the pressing portion on the base is located on the first side surface.

[0017] In one embodiment, at least two of the pressing members are provided, and at least two of the pressing members are symmetrically arranged on both sides of the accommodating groove.

[0018] The above-mentioned test fixture fixes the product to be tested through the base, and performs testing by making the sampling points on the sampling component directly contact the test points of the product to be tested on the base, so that the unnecessary signal conversion parts generated by the product to be tested when performing signal connection can be transferred to the product to be tested, thereby reducing the unnecessary conversion when the product to be tested and the test fixture are connected to the signal, greatly reducing the parts required for manufacturing the test fixture, thereby achieving the purpose of simplifying the test steps and the entire test fixture structure, and reducing the manufacturing cost of the test fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a test fixture according to some embodiments of the present application.

[0020] Figure 2 for Figure 1 A partial enlarged view of part A.

[0021] Figure 3 This is a schematic diagram of the structure of a pressing piece of a test fixture according to some embodiments of the present application.

[0022] Figure 4This is a schematic diagram of the structure of a test piece of a test fixture according to some embodiments of the present application.

[0023] Reference numerals:

[0024] 1. base; 11. receiving groove; 12. first side; 13. second side; 14. fixing groove; 15. mounting groove; 16. connecting groove; 17. third side; 18. placement groove;

[0025] 2. Support parts;

[0026] 3. Positioning piece; 31. Positioning surface; 32. Arc surface;

[0027] 4. Pressing member; 41. Pressing part;

[0028] 5. Test piece; 51. First installation component; 52. Second installation component; 53. Sampling component. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] As described in the background technology, current display screens need to be tested before and after assembling accessories such as the rubber frame hook. However, both before and after assembly, the display screens need to be loaded on a carrier before testing. However, the current products to be tested have redundant connections when connecting signals with the test fixture, which not only makes the test steps cumbersome, but also causes the test fixture to require more parts, complex structure, and high cost.

[0036] To this end, the present application provides a test fixture, which is used to carry a product to be tested in an automated production line for testing, so as to be able to identify whether the product to be tested has defects, thereby achieving the purpose of improving the production yield of the product to be tested.

[0037] The following uses the product to be tested as a display screen as an example to explain the structure of the test fixture in this application. It is understandable that in other embodiments, the test fixture of this application is not limited to being used only for carrying display screens in automated production lines for testing, but can also be used for carrying any electronic products in automated production lines for testing, which is not limited here.

[0038] See also Figure 1 An embodiment of the present application provides a test fixture, including a base 1 and a test piece 5. The base 1 is used to fix the product to be tested, and the test piece 5 is arranged on the base 1 to test the product to be tested on the base.

[0039] See also Figure 1 and Figure 4 In the specific setting, the test piece 5 has a sampling component 53 that can rotate relative to the base 1, and the sampling component 53 has a transfer point. When the sampling component 53 rotates, the transfer point can contact the test point on the product to be tested on the base 1 to test the product to be tested.

[0040] Specifically, the base 1 is provided with a receiving groove 1 and an installation groove 15 opened along a first direction. The receiving groove 1 is used to receive the product to be tested. The installation groove 15 is spaced apart from the receiving groove 11 and connected to each other. The test piece 5 is arranged in the installation groove 15 to test the product to be tested.

[0041] More specifically, the base 1 is also provided with a connecting groove 16 opened along the first direction, and the installation groove 15 is connected with the receiving groove 11 through the connecting groove 16. When the product to be tested is placed in the receiving groove 11, the flexible printed circuit board of the product to be tested can pass through the connecting groove 16 and be placed in the installation groove 15, and the test piece 5 can be attached to the flexible printed circuit board, so that the transfer point on the test piece 5 is in contact with the test point on the flexible printed circuit board to test the product to be tested. It can be understood that in the embodiment of the present application, the sampling component 53 is a transfer PCB board, and the transfer point on the transfer PCB board is in contact with the test point on the flexible printed circuit board of the product to be tested to achieve the test of the product to be tested.

[0042] In summary, the test fixture of the present application fixes the product to be tested by means of the base 1, and performs testing by making the sampling points on the sampling component 53 directly contact the test points of the product to be tested on the base, so that unnecessary signal conversion parts generated by the product to be tested during signal connection can be transferred to the product to be tested, thereby reducing unnecessary conversions when the product to be tested and the test fixture are connected to the signal, greatly reducing the parts required to manufacture the test fixture, thereby achieving the purpose of simplifying the test steps and the entire test fixture structure, and reducing the manufacturing cost of the test fixture.

[0043] In one embodiment, the test piece 5 includes a first mounting component 51, a second mounting component 52 and a sampling component 53. The first mounting component 51 is arranged in the mounting groove 15, the second mounting component 52 is rotatably arranged on the first mounting component 51, and the sampling component 53 is arranged on the second mounting component 52, and can contact the first mounting component 51 when the second mounting component 52 rotates relative to the first mounting component 51, so that the transfer point on the sampling component 53 can contact the test point on the flexible printed circuit board to test the display screen.

[0044] Specifically, the first mounting component 51 and the second mounting component 52 are both plate-shaped structures. A placement groove 18 opened along the first direction is provided on the side of the first mounting component 51 away from the base 1, and the placement groove 18 is connected with the connecting groove 16, so that after the product to be tested is placed in the receiving groove 11, the flexible printed circuit board of the product to be tested can pass through the connecting groove 16 and be placed in the placement groove 18. The second mounting component 52 is rotatably arranged on the first mounting component 51. The sampling component 53 is a transfer PCB board, and is arranged on the side of the second mounting component 52 facing the first mounting component 51. After the flexible printed circuit board of the product to be tested is placed in the placement groove 18, the second mounting component 52 can rotate relative to the first mounting component 51, so that the sampling component 53 can contact the flexible printed circuit board of the product to be tested, so that the transfer point on the sampling component 53 can directly contact the test point on the flexible printed circuit board, so as to test the product to be tested.

[0045] In addition, a height adjustment plate can be provided in the placement groove 18 of the first mounting component 51, and the product to be tested can have its flexible printed circuit board pass through the connecting groove 16 and be placed on the height adjustment plate of the placement groove 18 during testing. The height adjustment plate is detachably provided in the placement groove 18, so that the products to be tested with different thicknesses along the first direction can be adapted by replacing the height adjustment plates with different thicknesses along the first direction, so that when the products to be tested with various thicknesses are placed on the test fixture for testing, their flexible printed circuit boards can all fit with the height adjustment plate, which facilitates the subsequent contact between the side of the flexible printed circuit board away from the height adjustment plate and the sampling component 53, thereby ensuring the contact effect between the transfer point on the sampling component 53 and the test point on the flexible printed circuit board, and further ensuring the test effect of the product to be tested. In addition, in order to ensure the stability of the sampling component 53 on the second mounting component 52, a connecting groove is provided on the second mounting component 52, and the sampling component 53 is provided in the connecting groove.

[0046] In order to facilitate maintenance or replacement, in one embodiment, the sampling component 53 is detachably arranged in the connection groove. That is, the sampling component 53 can be clamped in the connection groove and fixed to the second mounting component 52 by bolts and other accessories. When the test piece 5 needs to be disassembled, it is only necessary to remove the bolts and other accessories, and then take the sampling component 53 out of the connection groove.

[0047] In one embodiment, the test piece 5 is detachably disposed in the mounting groove 15, so as to facilitate the removal of the test piece 5 from the base 1 and the repair or replacement of the test piece 5. Specifically, the first mounting component 51 is clamped in the mounting groove 15 and can be fixed to the base 1 by bolts and other accessories. When the test piece 5 needs to be disassembled, it is only necessary to remove the bolts and other accessories, and then take the first mounting component 51 out of the mounting groove 15.

[0048] It is worth mentioning that the current display screen needs to be tested before and after the assembly of auxiliary parts such as the frame hook. However, both the display screen before and after assembly need to be loaded on a carrier before testing. However, currently two different carriers are required to load the display screen before and after assembly respectively, which makes the test efficiency low and the test cost high.

[0049] Therefore, in one embodiment, the base 1 is provided with a receiving groove 11 opened along the first direction, the receiving groove 11 has a first side surface 12 perpendicular to the first direction and a second side surface 13 parallel to the first direction, the first side surface 12 is provided with a support member 2, and the second side surface 13 is provided with a positioning member 3. The base 1 is provided with a receiving groove 11 opened along the first direction, and the display screen before and after assembly can be placed in the receiving groove 11, so as to be tested by the test piece 5 later. Among them, the assembled display screen is the display screen after the auxiliary parts such as the rubber frame hook are installed on the display screen before assembly.

[0050] Specifically, the receiving groove 11 has a first side surface 12 perpendicular to the first direction and a second side surface 13 parallel to the first direction, and the first side surface 12 is connected to the second side surface 13. The support member 2 is arranged on the first side surface 12 to support the display screen in the receiving groove 11. When the display screen before assembly is placed in the receiving groove 11, the support member 2 contacts the back plate steel sheet of the display screen, and when the assembled display screen is placed in the receiving groove 11, the support member 2 still contacts the back plate steel sheet of the display screen. The positioning member 3 is arranged on the second side surface 13 to position the display screen in the receiving groove 11 and ensure the stability of the display screen on the base 1. When the display screen before assembly is placed in the receiving groove 11, the positioning member 3 contacts the glass side of the display screen, and when the assembled display screen is placed in the receiving groove 11, the positioning member 3 passes through the opening of the rubber frame or the avoidance space and contacts the glass side of the display screen.

[0051] Therefore, the test fixture of the present application can make the receiving groove 11 accommodate the display screen before and after assembly, make the support member 2 support the display screen before and after assembly, and make the positioning member 3 position the display screen before and after assembly. The receiving groove 11, the support member 2 and the positioning member 3 cooperate to form a space that can fix the display screen before assembly and the display screen after assembling auxiliary parts such as the rubber frame hook, so that when testing, there is no need to use two different carriers and put them into use in their respective assembly lines, thereby achieving more commonality and reducing costs.

[0052] See also Figure 1 and Figure 2 In one embodiment, the receiving groove 11 has two second side surfaces 13 arranged in parallel, and each second side surface 13 is provided with at least two positioning members 3 to improve the positioning effect of the display screen in the receiving groove 11.

[0053] Specifically, the receiving groove 11 also has two third side surfaces 17 arranged in parallel, and the second side surface 13 and the third side surface 17 are both vertically connected to the first side surface 12, and the second side surface 13 and the third side surface 17 are both vertically connected, so that the receiving groove 11 can accommodate a square display screen. Two positioning members 3 are arranged on each second side surface 13, and the positioning members 3 on the two second side surfaces 13 are symmetrically arranged. When the display screen before assembly is placed in the receiving groove 11, the positioning members 3 on the two second side surfaces 13 are respectively in contact with the two glass side surfaces opposite to the display screen, and when the assembled display screen is placed in the receiving groove 11, the positioning members 3 on the two second side surfaces 13 pass through the opening or avoidance space of the plastic frame and are respectively in contact with the two glass side surfaces opposite to the display screen.

[0054] In one embodiment, the positioning member 3 has a positioning surface 31 facing away from the second side surface 13, and the positioning surface 31 is parallel to the second side surface 13. After the display screen is placed in the receiving groove 11, the positioning surface 31 can be fitted with the glass side of the display screen to ensure the positioning effect of the positioning member 3 on the display screen. The positioning surface 31 and the second side surface 13 are connected and transitioned by an arc surface 32, so that when the staff puts the display screen in the receiving groove 11 or takes it out of the receiving groove 11, the positioning member 3 will not scratch the display screen or the staff's fingers.

[0055] In one embodiment, the support member 2 has a placement surface facing the notch of the receiving groove 11, and the placement surface is parallel to the first side surface 12. After the display screen is placed in the receiving groove 11, the positioning surface 31 can be in contact with the back plate steel sheet of the display screen to ensure the supporting effect of the support member 2 on the display screen and the support stability of the display screen on the support member 2.

[0056] See also Figure 1 and Figure 3In one embodiment, the test fixture further includes a pressing member 4, which is disposed on the base 1. The pressing member 4 is provided with a pressing portion 41, and the orthographic projection of the pressing portion 41 on the base 1 is located on the first side 12. When the display screen is placed in the receiving groove 11, the pressing portion 41 can contact the side of the display screen away from the back plate steel sheet to press the display screen in the receiving groove 11, thereby ensuring the stability of the display screen in the receiving groove 11.

[0057] Specifically, the pressing member 4 has a mounting surface perpendicular to the second side surface 13, and the pressing portion 41 is arranged on the mounting surface. In order to ensure the pressing effect, at least two pressing portions 41 are arranged on the mounting surface. When the display screen is placed in the receiving groove 11, there is a gap between the mounting surface and the display screen, and the side of the pressing portion 41 facing the base 1 contacts the side of the display screen away from the back plate steel sheet, so as to press the display screen into the receiving groove 11 and ensure the stability of the display screen in the receiving groove 11.

[0058] More specifically, the pressing member 4 is detachably arranged on the base 1 to facilitate replacement of the pressing member 4. The pressing member 4 can be detachably connected to the base 1 by a screw or pin structure.

[0059] In one embodiment, at least two pressing members 4 are provided, and at least two pressing members 4 are symmetrically arranged on both sides of the receiving groove 11 to enhance the stability of the display screen in the receiving groove 11 .

[0060] Specifically, two fixing grooves 14 are provided on the base 1, and the two fixing grooves 14 are symmetrically arranged on both sides of the receiving groove 11 and are both connected to the receiving groove 11. Two pressing pieces 4 are respectively arranged in the two fixing grooves 14, and are both detachably connected to the base 1. When the display screen is placed in the receiving groove 11, the pressing parts 41 on the two pressing pieces 4 are in contact with the side of the display screen away from the back plate steel sheet, so as to stably press and fix the display screen in the receiving groove 11, thereby ensuring the stability of the display screen in the receiving groove 11.

[0061] It can be seen that the test fixture provided by the present application, on the one hand, can load both pre-assembly and post-assembly display screens when carrying display screens for testing in an automated production line, thereby achieving greater commonality and reducing costs; on the other hand, it can reduce unnecessary switching when connecting signals between the display screen and the test fixture, thereby being able to manufacture the parts required for the test fixture, thereby simplifying the structure of the entire test fixture and reducing the manufacturing cost of the test fixture.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A test fixture, characterized in that: include: Base, used to fix the product to be tested; A test piece is arranged on the base, and the test piece has a sampling component that can rotate relative to the base. The sampling component has a transfer point. When the sampling component rotates, the transfer point can contact the test point on the product to be tested on the base to test the product to be tested.

2. The test fixture according to claim 1, characterized in that: The test piece is detachably arranged on the base.

3. The test fixture according to claim 1, characterized in that: The test piece includes a first mounting component, a second mounting component and a sampling component, the first mounting component is arranged on the base, the second mounting component is rotatably arranged on the first mounting component, and the sampling component is arranged on the second mounting component and can contact the first mounting component when the second mounting component rotates relative to the first mounting component.

4. The test fixture according to claim 3, characterized in that: The sampling component is detachably arranged on the second mounting component.

5. The test fixture according to claim 1, characterized in that: The base is provided with a receiving groove opened along a first direction, the receiving groove has a first side surface perpendicular to the first direction and a second side surface parallel to the first direction, a supporting member is provided on the first side surface, and a positioning member is provided on the second side surface.

6. The test fixture according to claim 5, characterized in that: The accommodating groove has two second side surfaces arranged in parallel, and each of the second side surfaces is provided with at least two positioning members.

7. The test fixture according to claim 5, characterized in that: The positioning member has a positioning surface facing away from the second side surface, and the positioning surface is parallel to the second side surface.

8. The test fixture according to claim 7, characterized in that: The positioning surface and the second side surface are connected and transitioned via an arc surface.

9. The test fixture according to claim 5, characterized in that: The support member has a placement surface facing the notch of the accommodating groove, and the placement surface is parallel to the first side surface.

10. The test fixture according to claim 5, characterized in that: The test fixture further includes a pressing piece, which is detachably disposed on the base. A pressing portion is provided on the pressing piece, and an orthographic projection of the pressing portion on the base is located on the first side surface.

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