Test fixture

Abstract

The utility model provides a test fixture comprising a workbench used for placing a to-be-tested piece; the testing assembly comprises a pushing structure and a driving piece which are arranged on the workbench, and the driving piece is used for applying force to the pushing structure in the first direction so that the pushing structure can have pushing force to the to-be-tested piece; the limiting assemblies are arranged on the workbench and located on the two sides of the pushing structure so that the pushing structure can move in the first direction relative to the workbench. A sensor is arranged at the position, making contact with the driving piece, of the pushing structure and used for monitoring the force of the driving piece on the pushing structure in real time. The test fixture can apply thrust to the to-be-tested piece placed on the workbench under the driving of the driving piece, and the limiting assembly can enable the pushing structure to move in the first direction, so that the limitation of manual test is solved, and the accuracy of the test process is improved; as the pushing structure is provided with the sensor, the force of the driving piece on the pushing structure can be accurately monitored in real time.

Description

Technical Field

[0001] The present disclosure relates to the field of testing technology, and in particular to a testing fixture. Background Art

[0002] The side of the laptop shell that contacts the placement plane is usually provided with a foot pad, which can prevent the bottom of the laptop from being scratched, reduce shock and prevent slipping. In order to ensure the anti-slip and various performances of the foot pad, the supplier has the need to perform thrust tests on the foot pad. The existing method of thrust testing the foot pad is relatively simple. Usually, the foot pad is attached to the test plane, and the tester pushes the foot pad with a thrust gauge. The peak value obtained by the test result is the maximum thrust. However, due to the limitations of manual operation, the human hand will shake during the test, and there will be deviations in the position of the thrust gauge aligned with the foot pad during each test, and the force and speed of the push cannot be accurate and consistent. Therefore, this method can only roughly calculate the thrust of the foot pad, and the precise value cannot be obtained. Utility Model Content

[0003] The present disclosure provides a test fixture to at least solve the above technical problems existing in the prior art.

[0004] The test fixture according to the present disclosure includes:

[0005] A workbench, used to place the test piece;

[0006] A test assembly, comprising a pushing structure and a driving member disposed on the workbench, wherein the driving member is used to apply a force to the pushing structure along a first direction so that the pushing structure exerts a thrust on the test piece; and

[0007] A limiting assembly, the limiting assembly is arranged on the workbench and located on both sides of the pushing structure, so that the pushing structure can move relative to the workbench along the first direction;

[0008] Wherein, a sensor is provided at a position on the pushing structure that contacts the driving member, and the sensor is used to monitor the force of the driving member on the pushing structure in real time.

[0009] In one possible implementation manner, the pushing structure includes a first end surface and a second end surface that are opposite to each other, the first end surface is arranged corresponding to a test position of the test piece, and the sensor is arranged on the second end surface.

[0010] In one embodiment, a transition section is provided between the first end surface and the second end surface.

[0011] In one possible implementation manner, the limiting assembly includes two retaining walls that are arranged opposite to each other, and the two retaining walls are respectively in contact with two side edges of the pushing structure.

[0012] In one embodiment, the limiting assembly includes two guide structures arranged opposite to each other, and the guide structure includes a first part fixed on the workbench and a second part connected to the first part, the first part, the second part and the workbench form a guide groove, and the first part and the second part meet the vertical condition.

[0013] In one possible implementation manner, the pushing structure further includes two guide blocks, the two guide blocks are respectively protrudingly disposed on two side edges of the pushing structure, and the guide blocks are partially disposed in the guide groove.

[0014] In one embodiment, the workbench includes a fixed platform and a height adjustment platform, the test piece is located on the fixed platform, and the test assembly and the limit assembly are located on the height adjustment platform; wherein the height adjustment platform can be raised and lowered along a second direction so that the position of the pushing structure relative to the test piece in the second direction is adjustable.

[0015] In one embodiment, the height adjustment platform has a first position and a second position. When the height adjustment platform is in the first position, the height adjustment platform and the table top of the fixed platform are located in the same plane; when the height adjustment platform is in the second position, there is a height difference between the height adjustment platform and the table top of the fixed platform.

[0016] In one possible implementation manner, a lifting structure is disposed below the height adjustment platform, and the lifting structure is used to drive the height adjustment platform to rise and fall along the second direction.

[0017] In one possible implementation manner, the driving member is an electric push rod.

[0018] In the present disclosure, since the test fixture includes a test assembly, the pushing structure of the test assembly can apply a thrust to the workpiece to be tested placed on the workbench under the drive of the driving member, and the limit assembly can enable the pushing structure to move along the first direction, thereby solving the limitations of manual testing and increasing the accuracy of the testing process; since a sensor is provided at the position on the pushing structure that contacts the driving member, the force of the driving member on the pushing structure can be accurately monitored in real time. When the workpiece to be tested is pushed, the value measured by the sensor will suddenly decrease, and the peak value is the maximum force applied by the driving member to the pushing structure, and finally the maximum thrust of the workpiece to be tested can be obtained.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0021] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0022] Figure 1 The overall structure schematic diagram of a test fixture of an exemplary embodiment of the present disclosure is shown;

[0023] Figure 2 The overall structural schematic diagram of the pushing structure of a test fixture according to an exemplary embodiment of the present disclosure is shown;

[0024] Figure 3 A schematic diagram of the overall structure of a fixed platform of a test fixture according to an exemplary embodiment of the present disclosure is shown;

[0025] Figure 4 A schematic diagram of the overall structure of a height adjustment platform of a test fixture according to an exemplary embodiment of the present disclosure is shown.

[0026] Explanation of the numbers in the figure: 1. workbench; 2. part to be tested; 3. pushing structure; 4. driving member; 5. limiting assembly; 6. lifting structure; 11. fixed platform; 12. height adjustment platform; 31. first end face; 32. second end face; 33. transition section; 34. sensor; 35. guide block; 51. first part; 52. second part; 111. guide groove; 121. protrusion; 512. guide groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0028] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1 Figure 2As shown, a test fixture of an exemplary embodiment of the present disclosure includes a workbench 1, a test assembly and a limit assembly 5. The workbench 1 is used to place a test piece 2. The test assembly includes a pushing structure 3 and a driving member 4 arranged on the workbench 1. The driving member 4 is used to apply a force to the pushing structure 3 along a first direction so that the pushing structure 3 has a thrust on the test piece 2. The limit assembly 5 is arranged on the workbench 1 and on both sides of the pushing structure 3 so that the pushing structure 3 can move relative to the workbench 1 along the first direction. Among them, a sensor 34 is arranged at the position on the pushing structure 3 that contacts the driving member 4, and the sensor 34 is used to monitor the force of the driving member 4 on the pushing structure 3 in real time.

[0030] In this embodiment, since electronic equipment or production equipment is placed on the platform, it is usually necessary to generate a large friction between it and the platform to achieve an anti-slip effect. Therefore, the test piece 2 can be a foot pad component of any product. The size and shape of the foot pad component can be adaptively designed according to the actual application environment. In this disclosure, the test piece 2 is an anti-slip silicone foot pad of a laptop computer. The driving member 4 is set to meet the parallel condition with the surface of the workbench 1 to apply a force parallel to the surface of the workbench 1 to the pushing structure 3. In order to ensure that the position where the thrust is applied to the test piece 2 is the same in each test, a fixed position can be set on the workbench 1 for placing the test piece 2 to ensure that the test piece 2 can be placed at the same position; since the workbench 1 is also provided with a limit assembly 5, the limit assembly 5 and the driving member 4 arranged parallel to the surface of the workbench 1 jointly limit the direction of the force received by the pushing structure 3, and the direction of the force received by the pushing structure 3 is the force in the first direction, and then the thrust received by the test piece 2 is also the force in the first direction, that is, it can be ensured that the pushing structure 3 applies the same direction of thrust to the same position of the test piece 2 in each test process. A sensor 34 is provided at the position on the pushing structure 3 that contacts the driving member 4. The sensor 34 can be specifically a pressure sensor 34, which can monitor the force of the driving member 4 on the pushing structure 3 in real time. Since there is friction between the test piece 2 and the workbench 1, the pushing structure 3 abuts against the test piece 2. As the driving member 4 is pushed, the value of the sensor 34 will increase. When the test piece 2 is pushed, the pushing structure 3 is also pushed along the first direction. At this time, the value of the pressure sensor 34 will suddenly decrease, and then the driving member 4 is controlled to stop working, and the numerical results measured by the pressure sensor 34 during the test are called out. The maximum peak value is the maximum force of the driving member 4 on the pushing structure 3, and the maximum thrust of the test piece 2 can be obtained. It can be understood that in the application of the test fixture, the placement position of the test piece 2 and the height of the test assembly can also be changed to perform thrust tests on different positions of the test piece 2. The test fixture disclosed in the present invention solves the limitations of manual testing and increases the accuracy of the test process.

[0031] Specifically, in one embodiment, the driving member 4 is an electric push rod.

[0032] In this embodiment, the electric push rod and the surface of the workbench 1 are arranged to meet the parallel condition, so as to apply a force parallel to the surface of the workbench 1 to the pushing structure 3. The electric push rod always pushes the pushing structure 3 along the first direction until the moment the foot pad is pushed, the pushing structure 3 is also pushed along the first direction.

[0033] Reference Figure 2 As shown, in one embodiment, the pushing structure 3 includes a first end surface 31 and a second end surface 32 opposite to each other, the first end surface 31 is arranged corresponding to the test position of the test piece 2 , and the sensor 34 is arranged on the second end surface 32 .

[0034] In this embodiment, during the test, the test piece 2 is first placed, and then the first end face 31 of the pushing structure 3 is brought into contact with the test position of the test piece 2. Then, the driving member 4, that is, the electric push rod is controlled to approach the sensor 34 position of the second end face 32 until it contacts the sensor 34 and applies force to the pushing structure 3, and the electric push rod is continuously pushed. When the foot pad is pushed, the pushing structure 3 is also pushed in the first direction, and then the electric push rod can be controlled to stop working.

[0035] In one embodiment, a transition section 33 is provided between the first end surface 31 and the second end surface 32 .

[0036] In this embodiment, the transition section 33 is in the shape of an inclined surface, and the end of the transition section 33 connected to the second end face 32 is relatively higher than the end of the transition section 33 connected to the first end face 31. By arranging the transition section 33 between the first end face 31 and the second end face 32, the stability of the pushing structure 3 is increased, and when the driving member 4 applies force to the pushing structure 3, the end of the pushing structure 3 close to the second end face 32 is prevented from tilting off the workbench 1, causing the test failure and resulting in inaccurate test results.

[0037] In one embodiment, the limiting assembly 5 includes two retaining walls that are arranged opposite to each other, and the two retaining walls are respectively in contact with two side edges of the pushing structure 3 .

[0038] In this embodiment, retaining walls are provided on both side edges of the pushing structure 3 to limit the direction of the force applied to the pushing structure 3, and the direction of the force applied to the pushing structure 3 is the force in the first direction, and thus the thrust applied to the test piece 2 is also the force in the first direction, that is, it can be ensured that the pushing structure 3 applies a thrust in the same direction to the same position of the test piece 2 during each test process.

[0039] Reference Figure 4As shown, in one embodiment, the limit assembly 5 includes two guide structures arranged relatively to each other, the guide structure includes a first part 51 fixed on the workbench 1 and a second part 52 connected to the first part 51, the first part 51, the second part 52 and the workbench 1 form a guide groove 512, and the first part 51 and the second part 52 meet the vertical condition.

[0040] In this embodiment, by setting the first part 51 in the guide structure, the pushing structure 3 is moved in the first direction, and by setting the second part 52 in the guide structure, the pushing structure 3 is further restricted from moving in the second direction, preventing the end of the pushing structure 3 close to the second end surface 32 from being lifted up and separated from the workbench 1 by force, causing the test failure and inaccurate test results. The second direction is the Z direction in the three-dimensional coordinate system, that is, the vertical direction.

[0041] Furthermore, in one embodiment, the pushing structure 3 further includes two guide blocks 35 , and the two guide blocks 35 are respectively protrudingly disposed on two side edges of the pushing structure 3 , and a portion of the guide blocks 35 is disposed in the guide groove 512 .

[0042] In this embodiment, guide blocks 35 are protruding from both sides of the pushing structure 3 and are placed in the guide grooves 512 so that the pushing structure 3 can only move along the first direction, thereby limiting the movement of the pushing structure 3 in the second direction.

[0043] Reference Figure 3 and Figure 4 As shown, in one embodiment, the workbench 1 includes a fixed platform 11 and a height adjustment platform 12, the workpiece 2 to be tested is located on the fixed platform 11, and the test assembly and the limit assembly 5 are located on the height adjustment platform 12. The height adjustment platform 12 can be raised and lowered along a second direction, so that the position of the pushing structure 3 relative to the workpiece 2 to be tested in the second direction is adjustable.

[0044] Specifically, in one embodiment, the height adjustment platform 12 has a first position and a second position. When the height adjustment platform 12 is at the first position, the height adjustment platform 12 and the table top of the fixed platform 11 are located in the same plane; when the height adjustment platform 12 is at the second position, there is a height difference between the height adjustment platform 12 and the table top of the fixed platform 11.

[0045] In this embodiment, the second direction is the Z direction in the three-dimensional coordinate system, that is, the vertical direction. Since the height of the fixed platform 11 is fixed and the test piece 2 is located on the fixed platform 11, the position of the test piece 2 in the second direction remains unchanged. By setting the height adjustment platform 12, the test assembly and the limit assembly 5 are both set on the height adjustment platform 12, and the position of the height adjustment platform 12 in the second direction can be adjusted, thereby adjusting the test position of the test piece 2 in the second direction, so as to perform thrust tests at different positions of the test piece 2. Therefore, the test fixture disclosed in the present invention solves the limitations of manual testing and increases the accuracy of the testing process.

[0046] In one embodiment, a lifting structure 6 is disposed below the height adjustment platform 12 , and the lifting structure 6 is used to drive the height adjustment platform 12 to move up and down along the second direction.

[0047] In this embodiment, a guide groove 111 is provided on the fixed platform 11, specifically, the guide groove 111 is a T-shaped slide groove, and a protrusion 121 is provided on the height adjustment platform 12. Correspondingly, the protrusion 121 is a T-shaped protrusion, and the height adjustment platform 12 is connected to the fixed platform 11 by the T-shaped protrusion and the T-shaped slide groove. The lifting structure 6 is arranged below the height adjustment platform 12 and connected to the height adjustment platform 12, pushing the height adjustment platform 12 to move in the second direction. The height adjustment platform 12 can be driven by a motor, and the lifting structure 6 can include but is not limited to a motor, a telescopic rod or a lead screw, etc. The height adjustment platform 12 can also be adjusted manually. At this time, an adjustment screw can be respectively provided at the four corners below the height adjustment platform 12 to adjust the height. It can be understood that the lifting structure 6 is not limited to the above structure, and it is sufficient to be able to adjust the position of the height adjustment platform 12 in the second direction.

[0048] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by the directional words is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that spatially relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein.

[0052] The present disclosure has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present disclosure to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present disclosure is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present disclosure, and these variations and modifications all fall within the scope of protection claimed by the present disclosure. The scope of protection of the present disclosure is defined by the attached claims and their equivalents.

Claims

1. A test fixture, characterized in that: include: A workbench (1) for placing a test piece (2); A test assembly, comprising a pushing structure (3) and a driving member (4) arranged on the workbench (1), wherein the driving member (4) is used to apply a force to the pushing structure (3) along a first direction so that the pushing structure (3) exerts a pushing force on the test piece (2); and a limiting assembly (5), the limiting assembly (5) being arranged on the workbench (1) and located on both sides of the pushing structure (3), so that the pushing structure (3) can move relative to the workbench (1) along the first direction; Wherein, a sensor (34) is provided at a position on the pushing structure (3) that contacts the driving member (4), and the sensor (34) is used to monitor in real time the force of the driving member (4) on the pushing structure (3).

2. The test fixture according to claim 1, characterized in that: The pushing structure (3) comprises a first end surface (31) and a second end surface (32) which are opposite to each other; the first end surface (31) is arranged corresponding to a test position of the test piece (2); and the sensor (34) is arranged on the second end surface (32).

3. The test fixture according to claim 2, characterized in that: A transition section (33) is provided between the first end surface (31) and the second end surface (32).

4. The test fixture according to claim 1, characterized in that: The limiting assembly (5) comprises two retaining walls arranged opposite to each other, and the two retaining walls are respectively in contact with two side edges of the pushing structure (3).

5. The test fixture according to claim 1, characterized in that: The limiting assembly (5) comprises two guide structures arranged opposite to each other, the guide structures comprising a first part (51) fixed on the workbench (1) and a second part (52) connected to the first part (51), the first part (51), the second part (52) and the workbench (1) forming a guide groove (512), and the first part (51) and the second part (52) satisfy a vertical condition.

6. The test fixture according to claim 5, characterized in that: The pushing structure (3) further comprises two guide blocks (35), wherein the two guide blocks (35) are respectively protrudingly arranged on two side edges of the pushing structure (3), and a portion of the guide blocks (35) is disposed in the guide groove (512).

7. The test fixture according to claim 1, characterized in that: The workbench (1) comprises a fixed platform (11) and a height adjustment platform (12); the test piece (2) is located on the fixed platform (11); the test assembly and the limit assembly (5) are located on the height adjustment platform (12); wherein the height adjustment platform (12) can be raised and lowered along a second direction so that the position of the pushing structure (3) relative to the test piece (2) in the second direction is adjustable.

8. The test fixture according to claim 7, characterized in that: The height adjustment platform (12) has a first position and a second position. When the height adjustment platform (12) is in the first position, the table tops of the height adjustment platform (12) and the fixed platform (11) are located in the same plane; when the height adjustment platform (12) is in the second position, there is a height difference between the table tops of the height adjustment platform (12) and the fixed platform (11).

9. The test fixture according to claim 7, characterized in that: A lifting structure (6) is provided below the height adjustment platform (12), and the lifting structure (6) is used to drive the height adjustment platform (12) to move up and down along the second direction.

10. The test fixture according to claim 1, characterized in that: The driving member (4) is an electric push rod.

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