Touch screen hot plug touch test fixture

Abstract

The utility model discloses a hot plug touch test fixture for a touch screen. The hot plug touch test fixture comprises a box body, wherein a test board is arranged in the box body; one end of the test line is connected to the test plate, the other end of the test line extends out of the box body, and the test line is used for being connected with a test of a touch screen to be tested; the conductive element is connected to the other side of the test board and is used for testing power supply; and the execution element is arranged above the box body and is used for controlling connection or disconnection of the metal spring piece and the metal contact. According to the touch screen hot plug touch test fixture provided by the utility model, the power supply circuit connected with the test board is in a disconnected state in a normal state through the conductive element, and the execution element is driven to enable the metal spring piece to be pressed downwards and electrified, so that the test board detects the touch screen; and after detection, the execution element is driven again, so that the metal spring piece can be reset upwards, power failure of the test board is formed, the situation that the IC is damaged in the process of taking out the touch screen after the test is completed is ensured, and test protection of the touch screen is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screens, in particular to a touch screen hot plug and pull touch test fixture. Background Art

[0002] A touch screen, also known as a "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. When a graphic button on the screen is touched, the tactile feedback system on the screen can drive various connection devices according to a pre-programmed program. It can be used to replace mechanical button panels and create vivid audio and video effects through the LCD display.

[0003] During the production and preparation of touch screens, the touch screens need to be tested one by one. During the testing process, a test board is usually connected to the touch screen to detect various data through a computer. In the actual testing process, after testing the function of a touch screen, the operator usually does not actively power off the test board, but directly replaces the next touch screen to continue testing. If the test board itself does not support hot plugging, there will be certain hidden dangers that a large current will directly enter the IC, damaging the IC and causing electrical failure. Therefore, for test boards that cannot support hot plugging, it is necessary to add a hot plug test fixture to eliminate this problem. For this purpose, the present application proposes a touch screen hot plug test fixture. Utility Model Content

[0004] Based on this, it is necessary to provide a touch screen hot-swap test fixture to address the above technical problems, disconnect the conductive element that supplies power to the test board when not under test, and connect and disconnect the conductive element through the actuator, thereby realizing the hot-swap function on the test board, which is beneficial to the power-off protection of the touch screen under test.

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

[0006] A touch screen hot-swap test fixture, a box body, and a test board is arranged inside the box body;

[0007] A test line, one end of which is connected to the test board and the other end of which extends outside the box body, and is used for testing and connecting with the touch screen to be tested;

[0008] A conductive element connected to the other side of the test board for testing power supply;

[0009] The conductive element includes a metal spring sheet and a metal contact, and the metal spring sheet and the metal contact are respectively connected to a first wire and a second wire;

[0010] The actuator is arranged above the box body and is used to control the connection or disconnection of the metal spring sheet and the metal contact.

[0011] Furthermore, one end of the first wire is connected to an external power supply, and the second wire is connected to a test board.

[0012] Furthermore, the actuator includes two guide posts relatively arranged at the top of the box body and a support platform commonly connected to the top ends of the guide posts.

[0013] Furthermore, a pressing piece is slidably connected to the surfaces of the two guide posts, and a control piece for controlling the lifting and lowering of the pressing piece is installed on the support platform.

[0014] Furthermore, the clamping member includes a sliding plate that slides together on the surfaces of the two guide pillars and an insulating clamping end connected to the bottom of the sliding plate, and the insulating clamping end is located directly above the metal spring sheet.

[0015] Furthermore, the metal contact is located below the metal spring sheet, and after the metal spring sheet is pressed and abutted by the insulating pressing end, it contacts the metal contact to form conduction of the conductive element circuit.

[0016] Furthermore, the metal spring sheet and the metal contact are installed together above the insulating support seat.

[0017] Furthermore, the control member includes a frame fixed to the top of the support platform and a control arm hinged to one side of the top of the frame, and a movable arm is hinged to the control arm;

[0018] One end of the movable arm is hinged with a transmission rod, and one end of the transmission rod passes through the support platform and is connected with a corresponding sliding plate below.

[0019] Furthermore, a spring is sleeved on the surfaces of the two guide posts, one end of the spring is connected to the lower side of the sliding plate and the other end is connected to the box body.

[0020] Furthermore, a test slot is provided on the top of the box body for inserting detection of the touch screen, and a plurality of positioning blocks are fastened and installed around the outer side of the test slot by bolts.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The touch screen hot-swap test fixture provided by the utility model makes the power circuit connected to the test board in a disconnected state under normal conditions through the conductive element, drives the actuator to press the metal spring piece downward and energize it to form the test board to detect the touch screen, and after the detection, the actuator is driven again to make the metal spring piece upward and reset, forming the power off of the test board, thereby ensuring that the IC is not damaged in the process of taking out the touch screen after the test, which is beneficial to the test protection of the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a touch screen hot-swap test fixture provided by the utility model;

[0024] Figure 2 A schematic diagram of the second structural form of the touch screen hot-swap test fixture provided by the utility model;

[0025] Figure 3 A schematic diagram of the structure of the actuator of the touch screen hot-swap test fixture provided by the utility model;

[0026] Figure 4 The utility model provides a touch screen hot plug test fixture Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 5 The utility model provides a schematic diagram of the internal structure of the box body of the touch screen hot plug test fixture.

[0028] The markings in the figure are as follows:

[0029] Box body 1, test board 11, test line 12;

[0030] Conductive element 2, metal spring sheet 21, metal contact 22, wire 1 23, wire 2 24, insulating support seat 25;

[0031] Actuator 3, guide column 31, support platform 32, pressing member 33, control member 34, spring 35;

[0032] Frame 320, control arm 321, movable arm 322, transmission rod 323;

[0033] Sliding plate 330, insulating pressing terminal 331;

[0034] Test slot 4, positioning block 41. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0036] As described in the background art, in an actual test process, after testing the function of a touch screen, the operator usually does not actively power off the test board, but directly replaces the next touch screen to continue testing. If the test board itself does not support hot-swap, there will be certain hidden dangers that a large current will directly enter the IC, damaging the IC and causing electrical testing failure.

[0037] In order to solve this technical problem, the utility model provides a touch screen hot plug test fixture, which is used for the detection of the touch screen.

[0038] Specifically, please refer to Figure 1-Figure 5 The touch screen hot-swap test fixture specifically includes:

[0039] A box body 1, wherein a test board 11 is arranged inside the box body 1;

[0040] A test line 12, one end of which is connected to the test board 11 and the other end of which extends outside the box body 1, and is used for testing connection with the touch screen to be tested;

[0041] A conductive element 2 connected to the other side of the test board 11 for testing power supply;

[0042] The conductive element 2 includes a metal spring sheet 21 and a metal contact 22, and the metal spring sheet 21 and the metal contact 22 are respectively connected with a wire 1 23 and a wire 2 24;

[0043] The actuator 3 is disposed above the box body 1 and is used to control the connection or disconnection of the metal spring sheet 21 and the metal contact 22 .

[0044] The touch screen hot-swap test fixture provided by the utility model makes the power circuit connected to the test board 11 in a disconnected state under a normal state through the conductive element 2, drives the actuator 3 to make the metal spring sheet 21 pressed down and energized to form the test board 11 to detect the touch screen, and after the detection, the actuator 3 can be driven again to make the metal spring sheet 21 upward and reset, forming the power off of the test board 11, thereby ensuring that the IC is not damaged in the process of taking out the touch screen after the test, which is beneficial to the test protection of the touch screen.

[0045] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] Example 1

[0049] Please refer to Figure 1-Figure 3 A touch screen hot-swap test fixture comprises a box body 1, a test board 11 is arranged inside the box body 1; a test line 12, one end of which is connected to the test board 11 and the other end extends outside the box body 1, and is used for testing and connecting with the touch screen to be tested; a conductive element 2, which is connected to the other side of the test board 11 for testing power supply, wherein the conductive element 2 comprises a metal spring sheet 21 and a metal contact 22, and the metal spring sheet 21 and the metal contact 22 are respectively connected with a wire 1 23 and a wire 2 24; an actuator 3, which is arranged above the box body 1 and is used for controlling the connection or disconnection of the metal spring sheet 21 and the metal contact 22.

[0050] Please refer to Figure 3 , one end of the wire 1 23 is connected to the external power supply, and the wire 2 24 is connected to the test board 11;

[0051] The actuator 3 includes two guide columns 31 relatively arranged at the top of the box body 1 and a support platform 32 connected to the top of the guide columns 31. The surfaces of the two guide columns 31 are slidably connected with a clamping member 33. The support platform 32 is equipped with a control member 34 for controlling the lifting and lowering of the clamping member 33.

[0052] In the touch screen hot-swap test fixture provided in the present embodiment, in a natural state (i.e., when the touch screen is not connected and tested), the upper metal spring sheet 21 and the metal contact 22 are separated from each other. At this time, the power connected to the external power supply by the wire 1 23 cannot be transmitted to the test board 11 through the upper metal spring sheet 21, the metal contact 22 and the wire 2 24 for power-on testing. When the touch screen needs to be tested, the touch screen is placed on the box body 1 and connected to the corresponding test line 12, and then the control member 34 is driven to drive the pressing member 33 thereon to slide toward the direction of the upper metal spring sheet 21, and finally the upper metal spring sheet 21 is pressed against the surface of the metal contact 22, so that the power connected to the wire 1 23 is connected to the test board 11 for power-on testing.

[0053] After the power-on test of the touch screen is completed, the control member 34 is first driven to release the pressing effect on the pressing member 33. At this time, the upper metal spring sheet 21 is reset by its elastic restoring force and does not contact the metal contact 22 below, thereby disconnecting the circuit of the test board 11. Then the touch screen is taken out, which avoids the situation where a large current directly enters the IC and damages the IC and causes electrical failure due to the test board 11 itself not supporting hot plugging. The touch screen is effectively protected.

[0054] Example 2

[0055] The touch screen hot plug test fixture provided in Example 1 is further optimized. Specifically, Figure 3 ,and Figure 4 As shown, the pressing member 33 includes a sliding plate 330 that slides together on the surfaces of the two guide pillars 31 and an insulating pressing end 331 connected to the bottom of the sliding plate 330, and the insulating pressing end 331 is located just above the metal spring sheet 21;

[0056] The metal contact 22 is located below the metal spring sheet 21. After the metal spring sheet 21 is pressed and abutted by the insulating pressing end 331, it contacts the metal contact 22 to form the conduction of the circuit of the conductive element 2. The metal spring sheet 21 itself has a good elastic effect. When it is deformed within a certain range under the pressure and contacts the metal contact 22, it can be reset when the external force is removed, thereby meeting the continuous touch screen test.

[0057] The metal spring piece 21 and the metal contact 22 are installed together on the insulating support seat 25. The above-mentioned insulating support seat 25 provides installation conditions for the metal spring piece 21 and the metal contact 22, and can also form an insulation barrier with the external environment when the metal spring piece 21 and the metal contact 22 are in a power-on state, thereby improving the safety of the product during use;

[0058] As a further optimization of this embodiment: the control member 4 includes a frame 320 fixed to the top of the support platform 32 and a control arm 321 hinged to one side of the top of the frame 320, and a movable arm 322 is also hinged to the control arm 321;

[0059] One end of the movable arm 322 is hinged with a transmission rod 323, one end of the transmission rod 323 passes through the support platform 32 and is connected to the corresponding sliding plate 330 below, and the transmission rod 323 can slide along its height direction;

[0060] Through the above structural design, when the specific driving control member 34 moves, the control arm 321 is flipped to drive the movable arm 322 to rotate synchronously. During the swinging process, the movable arm 322 will link the transmission rod 323 and the sliding plate 330 thereon to slide on the surface of the guide column 31. When the control arm 321 is flipped into place, the movable arm 322 will rotate synchronously with the movable arm 322. Figure 4 After the state shown, the sliding plate 330 that moves downward in this process also drives the insulating pressing end 331 thereon to contact the surface of the metal spring sheet 21 below, so that it contacts the corresponding metal contact 22 to form a path, completing the power supply test of the test board 11;

[0061] Similarly, after the touch screen is tested, the control arm 321 is flipped to drive the movable plate 322 and the transmission rod 323 thereon to swing and reset, so that the sliding plate 330 releases the resistance to the metal spring sheet 21, thereby disconnecting the circuit, and then the touch screen after the test can be taken out.

[0062] Example 3

[0063] The touch screen hot plug test fixture provided in Example 3 is further optimized, such as Figure 1 As shown, the surfaces of the two guide posts 31 are also sleeved with springs 35, one end of the spring 35 is connected to the bottom of the sliding plate 330 and the other end is connected to the box body 1;

[0064] When the sliding plate 330 is pressed down to make the metal spring sheet 21 fit with the metal contact 22 and energize, the spring 35 is also compressed by the sliding plate 330. When the sliding plate 330 is moved up and reset, the compressed spring 35 can rely on its own elastic force to promote the control arm 321 to quickly get into position after flipping. At the same time, after the control arm 321 is flipped into position, the sliding plate 330 can also maintain relative stability at a high height.

[0065] Example 4

[0066] The touch screen hot plug test fixture provided in Example 3 is further optimized, such as Figure 1 As shown, a test slot 4 is provided on the top of the box body 1 for the placement detection of the touch screen, and a plurality of positioning blocks 41 are also installed around the outer side of the test slot 4 by bolts. In the actual detection process of the touch screen, the touch screen is placed inside the test slot 4, and the actual size of the test piece 4 is the space surrounded by the plurality of positioning blocks 41 distributed outside it. Therefore, by adjusting the different positions of the plurality of positioning blocks 41, the size can be adjusted according to the touch screens of different sizes during detection.

[0067] The use process of the touch screen hot-swap test fixture provided by the utility model is as follows: the touch screen to be tested is placed in the test slot 4 and connected to the test line 12, and then one end of the wire 1 23 is connected to the USB interface of the computer, and then the control arm 321 is turned over so that the movable arm 322 on it drives the transmission rod 323 to press down, so that the metal spring sheet 21 is pressed tightly against the surface of the metal contact 22, so that the wire 1 23 and the wire 2 24 are connected to power the test board 11, and the touch screen can be powered on.

[0068] After the detection is completed, the control arm 321 is flipped to drive the movable arm 322 to swing back to the original position (forming a Figure 1 The state shown in the figure) is then driven by the transmission rod 323 to drive the sliding plate 330 to release the pressing of the metal spring sheet 21, so that the metal spring sheet 21 and the metal contact 22 are separated, the circuit is disconnected, and then the touch screen after the test is completed is taken out.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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 the present invention can be understood according to specific circumstances.

[0070] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The 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 disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A touch screen hot-swap test fixture, characterized in that: It includes: A box body (1), wherein a test board (11) is arranged inside the box body (1); A test line (12), one end of which is connected to the test board (11) and the other end of which extends outside the box body (1), and is used for test connection with the touch screen to be tested; A conductive element (2) connected to the other side of the test board (11) for testing power supply; The conductive element (2) comprises a metal spring sheet (21) and a metal contact (22), and the metal spring sheet (21) and the metal contact (22) are respectively connected to a first wire (23) and a second wire (24); An actuator (3) is arranged above the box body (1) and is used to control the connection or disconnection of the metal spring sheet (21) and the metal contact (22).

2. The touch screen hot-swap test fixture according to claim 1, characterized in that: One end of the first wire (23) is connected to an external power supply, and the second wire (24) is connected to the test board (11).

3. The touch screen hot-swap test fixture according to claim 1, characterized in that: The actuator (3) comprises two guide columns (31) arranged opposite to each other at the top of the box body (1) and a support platform (32) commonly connected to the top of the guide columns (31).

4. The touch screen hot-swap test fixture according to claim 3, characterized in that: A pressing piece (33) is slidably connected to the surfaces of the two guide columns (31), and a control piece (34) for controlling the lifting and lowering of the pressing piece (33) is installed on the support platform (32).

5. The touch screen hot-swap test fixture according to claim 4, characterized in that: The pressing member (33) comprises a sliding plate (330) that slides together on the surfaces of the two guide pillars (31) and an insulating pressing end (331) connected to the bottom of the sliding plate (330), wherein the insulating pressing end (331) is located directly above the metal spring sheet (21).

6. The touch screen hot-swap test fixture according to claim 5, characterized in that: The metal contact (22) is located below the metal spring sheet (21), and after the metal spring sheet (21) is pressed and abutted by the insulating pressing end (331), it contacts the metal contact (22) to form conduction of the circuit of the conductive element (2).

7. The touch screen hot-swap test fixture according to claim 6, characterized in that: The metal spring sheet (21) and the metal contact (22) are installed together above the insulating support seat (25).

8. The touch screen hot-swap test fixture according to claim 5, characterized in that: The control member (34) comprises a frame (320) fixed to the top of the support platform (32) and a control arm (321) hinged to one side of the top of the frame (320); a movable arm (322) is also hinged to the control arm (321); One end of the movable arm (322) is hingedly connected to a transmission rod (323), and one end of the transmission rod (323) passes through the support platform (32) and is connected to a corresponding sliding plate (330) below.

9. The touch screen hot-swap test fixture according to claim 5, characterized in that: The surfaces of the two guide columns (31) are also sleeved with springs (35), one end of the spring (35) is connected to the bottom of the sliding plate (330) and the other end is connected to the box body (1).

10. The touch screen hot-swap test fixture according to claim 1, characterized in that: The box body (1) has a test slot (4) on the top for touch screen placement detection, and a plurality of positioning blocks (41) are installed around the outside of the test slot (4) by means of bolts.

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