Fool-proof test fixture

Abstract

The utility model discloses a fool-proof test fixture, and the test fixture is provided with a test groove. The pressing piece is hinged to the test fixture and is used for carrying out a pressing test on the FPC interface on the display module; the locking piece is arranged on the test fixture in a sliding manner and is used for limiting and fixing the pressing piece; the rocker switch module is arranged on one side of the test fixture and is used for on-off of a circuit, and a rocker switch button is rotatably arranged in the rocker switch module; an annular groove is formed in the surface of the rocker switch module and used for connecting the driving piece with the top of the rocker switch button. According to the fool-proof test fixture provided by the utility model, the rocker switch button is connected with the locking piece, so that when the rocker switch button is opened to carry out a power-on test of the test fixture, the locking piece is limited and locked under the action of the fool-proof limiting element; therefore, the display module cannot be directly taken out in the power-on process.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and particularly relates to a foolproof test fixture. Background Art

[0002] Display screens are widely used in modern society and can be seen everywhere. Through display screens, information can be expressed more intuitively and vividly. In the industrial and consumer fields, in addition to products that commonly use display screens, such as monitors, telephones, handheld scanners, cameras, etc., many devices that did not use display screens before are now starting to use them, such as remote controls, ovens, refrigerators, etc. Display screens have a huge market, and the shipment volume of display modules is also huge. For the test fixtures used for testing and shipping display screens, when employees test display screens, they need to follow the specified operation steps for testing.

[0003] When using a conventional test fixture to test a display module, the employee connects the display module to the connector of the test fixture, and then turns on the power switch for power-on testing. The normal test process is as follows: when the test fixture is not powered on, connect the display module. After the module is connected, turn on the power of the test fixture to start the test. After testing the display module, first cut off the power of the test fixture, and then remove the display module. However, in the actual test process, in order to save test time or forget to cut off the power first, the employee may directly connect or remove the module when the test fixture is not powered off, which is similar to a hot plug operation and there is a risk of burning out the display module. Therefore, a foolproof test fixture is proposed. Summary of the Utility Model

[0004] Based on this, in order to solve the above technical problems, it is necessary to provide a foolproof test fixture. By connecting the rocker switch button and the locking member, when the power is turned on for testing, the locking member will be locked and the display module cannot be removed, so that the display screen can be removed only after the power-off operation of the test fixture, avoiding the occurrence of hot plug operations.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A foolproof test fixture includes:

[0007] A test fixture, on which a test slot is provided;

[0008] A pressing member, which is hinged to the test fixture for pressing and testing the FPC interface on the display module;

[0009] A locking member, which is slidably arranged on the test fixture for limiting and fixing the pressing member;

[0010] A rocker switch module is provided on one side of the test fixture for switching the circuit on and off, and a rocker switch button is provided in the rocker switch module for rotation;

[0011] The surface of the rocker switch module is provided with an annular groove for connecting the driving member with the top of the rocker switch button;

[0012] Among them, an anti-foolproof limit element is also provided on one side of the locking member, and the anti-foolproof limit element is connected to the driving member through a transmission rope. When the rocker switch button controls the test fixture to be powered on, the driven member acts to cause the anti-foolproof limit element to form a locking limit for the locking member.

[0013] Furthermore, the driving member comprises a connecting block, the connecting block extends outside the annular groove and is fixed with a driving arm, and one end of the driving arm is connected to a driving end head.

[0014] Furthermore, the center of the annular groove and the rotation point of the rocker switch button are located on the same axis.

[0015] Furthermore, the driving member further comprises a transmission plate provided at one side of the driving end and hinged in the test fixture, and one side surface of the transmission plate is connected to one end of the transmission rope;

[0016] Wherein, a resistance groove is provided on the other side of the transmission plate, and the driving end head rotates along with the rocker switch button and can resist against the transmission plate through the resistance groove to tighten the transmission rope and thus unlock the locking member.

[0017] Furthermore, the foolproof limiting element comprises a sliding seat slidably disposed in the test fixture and a limiting terminal connected to one side of the sliding seat;

[0018] A spring fixed to the test fixture is connected to one side of the sliding seat away from the limit terminal, and the other end of the transmission rope is connected to the sliding seat.

[0019] Furthermore, the bottom of one side of the locking member is provided with limit blocks at equal intervals, and gaps are formed between the plurality of limit blocks for the limit terminal to slide in and limit.

[0020] Furthermore, guide wheels are provided on both sides of the transmission rope, and the guide wheels are rotatably disposed in the test fixture and are used for guiding the transmission of the transmission rope.

[0021] Furthermore, a return spring connected to the test fixture is fixed on the surface of the locking member.

[0022] Furthermore, the end face of the driving end head has a cambered corner.

[0023] Further, a test board is provided inside the test fixture, and the rocker switch module is connected to the power supply of the test board;

[0024] Rotate the rocker switch button to control the on / off of the circuit of the test fixture.

[0025] Compared with the prior art, the present utility model has the following beneficial effects:

[0026] The anti-fooling test fixture provided by the present utility model connects the rocker switch button and the locking member. When the rocker switch button is opened for power-on testing of the test fixture, the locking member will be limited and locked under the action of the anti-fooling limit element, so that the display module cannot be directly taken out during the power-on process. After the rocker switch button is closed to cut off the power supply of the test fixture, the anti-fooling limit element releases the limit on the locking member, so that the display module after power-off can be freely taken out, thus avoiding the occurrence of hot plugging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural view of the anti-fooling test fixture provided by the present utility model;

[0028] Figure 2 is a schematic structural view of the rocker switch module of the anti-fooling test fixture provided by the present utility model;

[0029] Figure 3 is a schematic cross-sectional view of the anti-fooling test fixture provided by the present utility model;

[0030] Figure 4 is a schematic internal structure view of the anti-fooling test fixture provided by the present utility model;

[0031] Figure 5 is a schematic top cross-sectional view of the anti-fooling test fixture provided by the present utility model;

[0032] Figure 6 is a schematic structural view of the guide wheel of the anti-fooling test fixture provided by the present utility model;

[0033] Figure 7 is a schematic second-form top cross-sectional view of the anti-fooling test fixture provided by the present utility model.

[0034] The reference numerals in the drawings are explained as follows:

[0035] Test fixture 1, test slot 11, rocker switch module 12, rocker switch button 13;

[0036] Annular groove 120;

[0037] Pressing member 2;

[0038] Locking member 3, limiting block 31, gap 32, return spring 33;

[0039] Driving member 4, connecting block 41, driving arm 42, driving end 43, transmission plate 44, abutting groove 45;

[0040] Arc chamfer 430;

[0041] Anti-fooling limiting element 5, sliding seat 51, limiting terminal 52, springs 53, 54;

[0042] Test board 6;

[0043] Transmission rope 7, guide pulley 71. Specific implementation mode

[0044] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0045] As described in the background art, when testing a display module, a conventional test fixture worker connects the display module to the connector of the test fixture and then turns on the power switch for power-on testing. The normal test process is as follows: when the test fixture is not powered on, the display module is connected. After the module is connected, the power of the test fixture is turned on to start the test. After testing the display module, the test fixture is powered off first, and then the display module is removed. However, in the actual test process, the worker may, in order to save test time or forget to power off first, directly connect or remove the module when the test fixture is not powered off, which is similar to a hot plug operation and there is a risk of burning out the display module.

[0046] To solve this technical problem, the present utility model provides an anti-fooling test fixture, which is applied to a display screen.

[0047] Specifically, please refer to Figures 1 - 7 , the anti-fooling test fixture specifically includes:

[0048] Test fixture 1, on which a test slot 11 is opened;

[0049] Pressing member 2, which is hinged to the test fixture 1 for pressing and testing the FPC interface on the display module;

[0050] Locking member 3, which is slidably arranged on the test fixture 1 for limiting and fixing the pressing member 2;

[0051] The rocker switch module 12 is provided on one side of the test fixture 1 for the on-off of the circuit. A rocker switch button 13 is rotatably provided inside the rocker switch module 12;

[0052] An annular groove 120 is formed on the surface of the rocker switch module 12 for the connection between the driving member 4 and the top of the rocker switch button 13;

[0053] Wherein, an anti-fooling limit element 5 is further provided on one side of the locking member 3. The anti-fooling limit element 5 and the driving member 4 are connected by a transmission rope 7. When the rocker switch button 13 controls the power-on of the test fixture 1, the anti-fooling limit element 5 is caused by the action of the driving member 4 to form a locking limit for the locking member 3.

[0054] The anti-fooling test fixture provided by the present utility model connects the rocker switch button 13 and the locking member 3, so that when the rocker switch button 13 is opened for the power-on test of the test fixture, the locking member 3 will be limited and locked by the action of the anti-fooling limit element 5, so that the display module cannot be directly taken out during the power-on process. After the rocker switch button 13 is closed to disconnect the power supply of the test fixture 1, the anti-fooling limit element 5 releases the limit on the locking member 3, so that the display module after power-off can be freely taken out, thus avoiding the occurrence of hot plugging operations.

[0055] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0056] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0058] Please refer to Figures 1 - 6 As shown, an anti-fooling test fixture, a test fixture 1, a test slot 11 is formed on the test fixture 1; a pressing member 2, which is hinged to the test fixture 1 for pressing and testing the FPC interface on the display module; a locking member 3, which is slidably provided on the test fixture 1 for limiting and fixing the pressing member 2; a rocker switch module 12, which is provided on one side of the test fixture 1 for the on-off of the circuit. A rocker switch button 13 is rotatably provided inside the rocker switch module 12;

[0059] An annular groove 120 is provided on the surface of the rocker switch module 12 for connecting the driving member 4 with the top of the rocker switch button 13, wherein a foolproof limit element 5 is also provided on one side of the locking member 3, and the foolproof limit element 5 is connected to the driving member 4 through a transmission rope 7. When the rocker switch button 13 controls the test fixture 1 to be powered on, the driven member 4 acts to cause the foolproof limit element 5 to form a locking limit on the locking member 3.

[0060] Please refer to Figure 5 , 6 The driving member 4 includes a connecting block 41, the connecting block 41 extends outside the annular groove 120 and is fixed with a driving arm 42, one end of the driving arm 42 is connected to a driving end head 43, and the end surface of the driving end head 43 has a curved chamfer 430;

[0061] The center of the annular groove 120 and the rotation point of the rocker switch button 13 are located on the same axis;

[0062] The driving member 4 further includes a transmission plate 44 provided at one side of the driving end 43 and hinged in the test fixture 1, one side of the transmission plate 44 is connected to one end of the transmission rope 7, wherein the other side of the transmission plate 44 is provided with a resistance groove 45, the driving end 43 rotates following the rocker switch button 13 and can resist the transmission plate 44 through the resistance groove 45 to tighten the transmission rope 7 to unlock the locking member 3;

[0063] like Figure 2 As shown, at this time, the driving end 43 is in contact with the transmission plate 44 through the contact groove 45, and the transmission plate 44 subjected to the contact is in an inclined state, and at this time, the position of the rocker switch button 13 is in a power-off state, that is, the test fixture 1 is in a non-powered state, and the display screen can be inserted, plugged in, and unplugged.

[0064] The foolproof test fixture provided in Example 1 is further optimized, specifically, Figure 4 As shown, the foolproof limit element 5 includes a sliding seat 51 slidably disposed in the test fixture 1 and a limit terminal 52 connected to one side of the sliding seat 51;

[0065] A spring 53 fixed to the test fixture 1 is connected to one side of the sliding seat 51 away from the limit terminal 52, and the other end of the transmission rope 7 is connected to the sliding seat 51. Figure 5 As shown, the spring 53 is in a stretched state under the action of the transmission rope 7. Therefore, if the transmission rope 7 releases the pulling of the sliding seat 51, the sliding seat 51 and the limit terminal 52 thereon will slide toward the locking member 3.

[0066] The bottom of one side of the locking member 3 is provided with limit blocks 31 at equal intervals, and a gap 32 is formed between the plurality of limit blocks 31 for the limit terminal 52 to slide in and limit;

[0067] As Figure 2 shown, at this time, the rocker switch button 13 in the rocker switch module 12 is in a power-off state, and the limiting terminal 52 and the corresponding gap 32 are in a separated state at this time, that is, the locking member 3 can slide freely without being interfered by external forces, so that the display module can be placed in the test slot 11 and taken out of the test slot 11 after being placed and detected;

[0068] When it is necessary to perform a power-on test on the display module placed in the test slot 11, flip the pressing member 2 so that it covers the upper part of the test slot 11, and move the locking member 3 so that it is engaged above the pressing plate 2 to form a limiting effect on it;

[0069] At this time, open the rocker switch button 13 to make it present as Figure 7 shown. During the opening process of the rocker switch button 13, the connecting block 41 thereon will slide along the direction of the annular groove 120, and the driving arm 42 and the driving end 43 thereon will move away from the transmission plate 44 and finally form Figure 7 shown state;

[0070] During the process of the contact end 43 releasing the contact with the transmission plate 44, the contact plate 44 without the contact effect will swing under the action of the spring 53, and under the action of the restoring force of the spring 53, the sliding seat 51 can drive the limiting terminal 52 thereon to slide into the corresponding gap 32. At this time, the transmission plate 44 has completed the swinging action. At this time, since the limiting terminal 52 forms a snap fit with the gap 32, as Figure 7 shown, the locking member 3 cannot slide to the left (that is, away from the locking member 2), thus forming a limit on the locking member 3, and the locking member 3 under the limiting action forms a limiting effect on the pressing member 2 inside it, so that the display module during the power-on process cannot be taken out.

[0071] Further optimize the anti-fooling test fixture provided in Embodiment 1 or 2. As Figures 1 - 4 shown, guide wheels 71 are provided on both sides of the transmission rope 7. The guide wheels 71 are rotatably arranged in the test fixture 1 and are used for guiding the transmission of the transmission rope 7.

[0072] Specifically, when implemented, through the action of the guide wheels 71, the transmission rope 7 can be effectively guided, ensuring the stable transmission of the position of the transmission rope 7.

[0073] Further optimize the anti-fooling test fixture provided in Embodiment 3. As Figure 3 shown, a return spring 33 connected to the test fixture 1 is fixed on the surface of the locking member 3. Under the action of the return spring 33, the natural state of the locking member 3 is as Figure 3The state shown is such that when the pressing member 2 is flipped, the pressing member 2 will abut against one side of the locking member 3 to form a sliding avoidance, enabling the pressing member 2 to be flipped in place. After the pressing member 2 is flipped in place, under the action of the return spring 33, the locking member 3 will slide back to form a lock on the pressing member 2;

[0074] The test fixture 1 is provided with a test board 6. The rocker switch module 12 is connected to the power supply of the test board 6. Rotate the rocker switch button 13 to control the on / off of the circuit of the test fixture 1. As Figure 3 shown, the test board 6 is in contact with the inside of the test slot 11. By placing the interface on the display module to be tested into the test slot 11, a connection to the interface of the test board 6 can be formed. Turning on the rocker switch module 12 enables power-on detection.

[0075] The usage process of the anti-foolproof test fixture provided by the present utility model is as follows: When the rocker switch button 13 is in the Figure 2 power-off state shown, place the display module to be tested into the test slot 11, arrange the detection interface on the display module, and then flip the pressing member 2 until it is in place. The locking member 3 forms a limit on the pressing member 2. Then turn on the rocker switch button 13 to make it in the power-on state (as Figure 7 shown). At this time, the test fixture 1 is powered on, and the display module can be powered on and detected through the test board 6;

[0076] During the process of turning on the power of the above rocker switch button 13, the flipped rocker switch button 13 will drive the connecting block 41, the driving arm 42, and the driving end 43 thereon to swing, releasing the action on the transmission plate 44. Under the pulling force during the reset process of the spring 53, the limit terminal 52 on the sliding seat 51 is driven to snap into the corresponding gap 32 to form a limit on the locking member 3, ensuring that when the rocker switch button 13 is not powered off, the locking member 3 cannot be driven to release the lock on the pressing member 2, and thus the display module cannot be taken out, avoiding the occurrence of hot plugging.

[0077] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or in communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0078] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. The preferred embodiments of the present utility model are shown in the accompanying drawings, but they do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure that makes use of the content of the specification and drawings of the present utility model and is directly or indirectly applied to other related technical fields shall be within the scope of the patent protection of the present utility model by the same token.

Claims

1. A foolproof test fixture, characterized in that: It includes: A test fixture (1), wherein a test slot (11) is provided on the test fixture (1); A pressing piece (2) which is hinged to the test fixture (1) and is used to perform a pressing test on the FPC interface on the display module; A locking member (3) slidably disposed on the test fixture (1) and used to limit and fix the pressing member (2); A rocker switch module (12) is arranged on one side of the test fixture (1) and is used for switching a circuit on and off. A rocker switch button (13) is rotatably arranged inside the rocker switch module (12); The surface of the rocker switch module (12) is provided with an annular groove (120) for connecting the driving member (4) with the top of the rocker switch button (13); A foolproof limit element (5) is also provided on one side of the locking member (3), and the foolproof limit element (5) is connected to the driving member (4) via a transmission rope (7). When the rocker switch button (13) controls the test fixture (1) to be powered on, the driven member (4) acts to cause the foolproof limit element (5) to lock and limit the locking member (3).

2. The foolproof test fixture according to claim 1, characterized in that: The driving member (4) comprises a connecting block (41), the connecting block (41) extending outside the annular groove (120) and having a driving arm (42) fixed thereon, one end of the driving arm (42) being connected to a driving end head (43).

3. The foolproof test fixture according to claim 2, characterized in that: The center of the annular groove (120) and the rotation point of the rocker switch button (13) are located on the same axis.

4. The foolproof test fixture according to claim 2, characterized in that: The driving member (4) further comprises a transmission plate (44) which is arranged on one side of the driving end head (43) and is hingedly connected to the testing fixture (1); one side surface of the transmission plate (44) is connected to one end of a transmission rope (7); The other side of the transmission plate (44) is provided with a resistance groove (45), and the driving end head (43) rotates along with the rocker switch button (13) and can resist against the transmission plate (44) through the resistance groove (45), thereby tightening the transmission rope (7) and thus unlocking the locking member (3).

5. The fool-proof test fixture according to claim 1, characterized in that: The foolproof limiting element (5) comprises a sliding seat (51) slidably arranged in the test fixture (1) and a limiting terminal (52) connected to one side of the sliding seat (51); A spring (53) fixed to the test fixture (1) is connected to a side of the sliding seat (51) away from the limit terminal (52), and the other end of the transmission rope (7) is connected to the sliding seat (51).

6. The foolproof test fixture according to claim 5, characterized in that: Limiting blocks (31) are evenly spaced at the bottom of one side of the locking member (3), and gaps (32) are formed between the plurality of limiting blocks (31) for the limiting terminal (52) to slide in and limit.

7. The foolproof test fixture according to claim 6, characterized in that: Guide wheels (71) are provided on both sides of the transmission rope (7); the guide wheels (71) are rotatably disposed in the test fixture (1) and are used to guide the transmission of the transmission rope (7).

8. The foolproof test fixture according to claim 6, characterized in that: A return spring (33) connected to the test fixture (1) is fixed on the surface of the locking piece (3).

9. The foolproof test fixture according to claim 2, characterized in that: The end surface of the driving end head (43) has a cambered chamfer (430).

10. The foolproof test fixture according to claim 1, characterized in that: The test fixture (1) has a test board (6) therein, and the rocker switch module (12) is connected to a power supply of the test board (6); The rocker switch button (13) is rotated to control the on / off of the circuit of the test fixture (1).

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