FPC pressure head for LCD power-on detection

Abstract

This invention proposes an FPC pressure head for LCD power-on detection, comprising: a main body, a pressure block, a pressing handle, an FPC carrier block, and an FPC board mounted on the FPC carrier block; the main body is located above the pressure block, and a compression spring connects the main body and the pressure block; the main body has mounting holes and linear bearings installed in the mounting holes; the pressing handle is located above the main body, one end of the pressing handle is connected to the pressure block via an optical axis passing through the linear bearing, and the pressing handle is rotatably connected to the main body; the FPC carrier block is detachably mounted on the lower end face of the pressure block. In this invention, the main body serves as a support component, the linear bearing and optical axis cooperate to ensure the verticality of the FPC carrier block's vertical movement, and the pressing handle and compression spring cooperate to control the pressing stroke. The overall structure is simple and compact, with the advantage of small unit size, and most components use standard parts, resulting in low manufacturing cost and easy maintenance. It is also applicable to electrical testing of different models and different PIN ports.

Description

Technical Field

[0001] This invention relates to the field of LCD testing technology, and more specifically to an FPC pressure head for testing the power-on state of an LCD. Background Technology

[0002] With the continuous development of flat panel display technology, LCDs, with their advantages of low voltage, low power consumption, flat panel design, small size and portability, and ease of circuit integration, are constantly meeting people's increasingly diverse functional and personalized needs, and are therefore widely used in various electronic products. LCD products need to undergo various tests before packaging to check their manufacturing quality.

[0003] The electrical testing of LCDs refers to the process of applying voltage to the connection terminals of LCD products to check whether the LCD can display normally. LCD electrical testing is generally performed using an FPC indenter. Currently, domestically produced FPC indenters are generally large in size, have a limited range of applications, and are primarily designed for specific equipment and product models, resulting in poor versatility. Some smaller FPC indenters exist, but these are complex in structure, contain numerous tiny parts, and are often custom-made, leading to high cost, easy damage, and difficulty in maintenance. Summary of the Invention

[0004] In order to solve the technical problems existing in the background art, the present invention proposes an FPC pressure head for LCD power-on detection.

[0005] The present invention proposes an FPC pressure head for LCD power-on detection, comprising: a main body, a pressure block, a pressing handle, an FPC carrier block, and an FPC board mounted on the FPC carrier block;

[0006] The main body is located above the pressure block, and a compression spring is provided between the main body and the pressure block to connect the two; the part of the main body above the pressure block is provided with a through mounting hole and a linear bearing installed in the mounting hole;

[0007] The pressing handle is located above the main body. One end of the pressing handle is connected to the pressure block through a light shaft passing through a linear bearing. The other end of the pressing handle is a free end. The part of the pressing handle located between its two ends is rotatably connected to the main body.

[0008] The FPC carrier block can be detachably mounted on the lower end face of the pressure block.

[0009] Preferably, the top of the optical axis is provided with an internal threaded hole, and the pressing handle is connected to the optical axis by a lifting stud that passes through its end and is screwed into the internal threaded hole.

[0010] Preferably, a fork is provided at one end of the pressing handle, the lifting stud is located in the fork, a limiting block is provided at the top of the lifting stud, and the limiting block abuts against the upper surface of the pressing handle.

[0011] Preferably, the FPC carrier is assembled with the pressure block by a threaded fastener, and the screw-in and screw-out ends of the threaded fastener are located above the pressure block.

[0012] Preferably, the pressure block has a vertically arranged groove that extends through both ends, and the threaded fastener is located inside the groove.

[0013] Preferably, the threaded fastener includes a threaded sleeve vertically fixed to the FPC carrier and a set screw screwed into the threaded sleeve from above the pressure block.

[0014] Preferably, the FPC carrier is made of rubber.

[0015] Preferably, the FPC carrier block is provided with a positioning pin, and the pressure block is provided with a positioning hole that matches the positioning pin.

[0016] Preferably, one end of the linear bearing has a flange, which is located above the body and connected to the body by screws or bolts, and the lower end of the pressing handle abuts against the upper surface of the flange.

[0017] Preferably, the main body is provided with a guide hole outside its mounting hole; a vertically arranged guide post is provided between the main body and the pressure block, the lower end of the guide post is connected to the pressure block, the top end of the guide post extends into the guide hole, and the top end of the guide post is provided with an internal thread hole; a compression spring is fitted on the guide post, and its two ends abut against the main body and the pressure block respectively; a screw or bolt passes through the flange and is screwed into the threaded hole of the guide post.

[0018] This invention designs the structure and assembly relationship of the main body, pressure block, pressing handle, and FPC carrier block so that pressing down on the free end of the pressing handle pulls the pressure block upward, thereby causing the FPC carrier block and FPC board to move upward. When the pressing handle is released, the pressure block, under the action of the compression spring, automatically returns the FPC carrier block and FPC board to their original position. The vertical movement of the FPC board allows it to contact or separate from the PIN on the LCD, completing the electrical inspection. In the entire structure, the main body serves as the supporting component, the linear bearing and optical axis cooperate to ensure the vertical movement of the FPC carrier block, and the pressing handle and compression spring cooperate to control the pressing stroke. The overall structure is simple and compact, with the advantage of small unit size. Furthermore, most components use standard parts, resulting in low manufacturing cost and easy maintenance. In addition, during use, when inspecting different models of products, only the corresponding FPC carrier block and FPC board need to be replaced, thus making the pressure head somewhat universal and applicable to electrical inspection of different models and PIN ports. Attached Figure Description

[0019] Figure 1 This is an isometric view of an FPC pressure head for LCD power-on detection proposed in this invention;

[0020] Figure 2This is an exploded view of an FPC pressure head for LCD power-on detection proposed in this invention;

[0021] Figure 3 This is a schematic diagram illustrating the working principle of an FPC pressure head for LCD power-on detection proposed in this invention. Detailed Implementation

[0022] Reference Figure 1-2 The present invention proposes an FPC pressure head for LCD power-on detection, comprising: a main body 1, a pressure block 2, a pressing handle 3, an FPC carrier block 4, and an FPC board 5 mounted on the FPC carrier block 4.

[0023] The main body 1 is located above the pressure block 2, and a compression spring 6 is provided between the main body 1 and the pressure block 2 to connect the two. The part of the main body 1 above the pressure block 2 has a through mounting hole and a linear bearing 7 installed in the mounting hole. The pressing handle 3 is located above the main body 1. One end of the pressing handle 3 is connected to the pressure block 2 through a light shaft 8 passing through the linear bearing 7, and the other end of the pressing handle 3 is a free end. The part of the pressing handle 3 between its two ends is rotatably connected to the main body 1 through a pin. When the free end of the pressing handle 3 is pressed down, the pressing handle 3 pulls the pressure block 2 upward through the light shaft 8. When the free end of the pressing handle 3 is released, the elastic force of the compression spring 6 can push the pressure block 2 to automatically return to its original position.

[0024] The FPC carrier block 4 is detachably mounted on the lower end face of the pressure block 2, so that the FPC carrier block 4 and the FPC board 5 can move upward as the pressure block 2 moves upward and reset as the pressure block 2 resets.

[0025] Reference Figure 3 During electrical testing, the main body 1 of the pressure head is fixed at the testing station, and the free end of the pressing handle 3 is pressed down to lift the FPC board 5. When the LCD enters the testing station, the pressing handle 3 is released so that the FPC board 5 presses onto the PINs on the LCD to perform the electrical testing. After the test is completed, the free end of the pressing handle 3 is pressed down again to lift the FPC board 5 again to separate it from the LCD, allowing the LCD that has completed the electrical test to enter the next station, while a new batch of LCDs to be tested enters the testing station.

[0026] As can be seen from the above, this invention, through the structural and assembly relationship of the main body 1, pressure block 2, pressing handle 3, and FPC carrier block 4, allows the pressure block 2 to be pulled upward when the free end of the pressing handle 3 is pressed down, thereby driving the FPC carrier block 4 and FPC board 5 upward. When the pressing handle 3 is released, the pressure block 2, under the action of the compression spring 6, automatically resets the FPC carrier block 4 and FPC board 5 downward. The up-and-down movement of the FPC board 5 allows it to contact or separate from the PIN on the LCD, completing the electrical inspection. In the entire structure, the main body 1 serves as the supporting component, the linear bearing 7 cooperates with the optical axis 8 to ensure the verticality of the up-and-down movement of the FPC carrier block 4, and the pressing handle 3 cooperates with the compression spring 6 to control the stroke of the pressure block 2. The overall structure is simple and compact, with the advantage of small unit size. Moreover, most components use standard parts, resulting in low manufacturing cost and easy maintenance. Furthermore, during use, when inspecting different models of products, only the corresponding FPC carrier block 4 and FPC board 5 need to be replaced, thus making the pressure head somewhat universal and applicable to electrical inspection of different models and different PIN ports.

[0027] Furthermore, in this embodiment, the top of the optical axis 8 is provided with an internal threaded hole, and the pressing handle 3 is connected to the optical axis 8 via a lifting stud 9 that passes through its end and is screwed into the internal threaded hole. During use, the pressing amplitude of the pressing handle 3 can be controlled by adjusting the screwing depth of the lifting stud 9.

[0028] In addition, this embodiment also provides a fork at one end of the pressing handle 3, and places the lifting stud 9 inside the fork. The top of the lifting stud 9 is provided with a limiting block, and the limiting block abuts against the upper surface of the pressing handle 3. The fork structure allows the pressing handle 3 to be directly pulled away from the lifting stud 9 and then detached when disassembling and assembling with the main body 1, thereby improving the convenience of disassembly and assembly.

[0029] In this embodiment, the FPC carrier 4 is assembled with the pressure block 2 by a threaded fastener, and the screw-in and screw-out ends of the threaded fastener are located above the pressure block 2 to facilitate the disassembly of the FPC carrier 4, thereby improving the convenience of replacing the FPC carrier 4.

[0030] In this embodiment, a vertically arranged groove 201 with both ends through is provided on the side of the pressure block 2. The threaded fastener is located inside the groove 201. The design of the groove 201 provides room for the threaded fastener to move, thereby saving space, improving the compactness of the structure, and making the overall pressure head more miniaturized.

[0031] In this embodiment, the FPC carrier block 4 is made of rubber, which has a good cushioning function and can protect the LCD from damage during the pressing process.

[0032] The threaded fastener in this embodiment includes a threaded sleeve 11 vertically fixed to the FPC carrier block 4 and a set screw 12 screwed into the threaded sleeve 11 from above the pressure block 2. This structural design of the threaded fastener ensures that its threaded connection is not affected by the thickness of the FPC carrier block 4, thereby increasing the length of the threaded connection without the need to provide threaded holes on the FPC carrier block 4, and thus making the assembly of the FPC carrier block 4 and the pressure block 2 more secure.

[0033] In this embodiment, the FPC carrier block 4 is provided with a positioning pin 13, and the pressure block 2 is provided with a positioning hole that matches the positioning pin 13, so as to quickly position the components during the assembly process.

[0034] In this embodiment, one end of the linear bearing 7 is equipped with a flange 701. The flange 701 is located above the main body 1 and is connected to the main body 1 by screws or bolts. The lower end of the pressing handle 3 rests against the upper surface of the flange 701. The flange 701 ensures the firmness and ease of assembly between the linear bearing 7 and the main body 1.

[0035] In this embodiment, the main body 1 has a guide hole located outside its mounting hole; a vertically arranged guide post 10 is provided between the main body 1 and the pressure block 2, with its lower end connected to the pressure block 2, its top end extending into the guide hole, and its top end having an internal threaded hole; a compression spring 6 is fitted onto the guide post 10, with its two ends abutting against the main body 1 and the pressure block 2 respectively; screws or bolts pass through the flange 701 and are screwed into the threaded hole of the guide post 10. The design of the guide post 10 improves the smoothness of the movement of the compression spring 6 and the pressure block 2, while the main body 1 is connected to the guide post 10 by screws or bolts passing through the flange 701 and screwed into the threaded hole of the guide post 10, simplifying the assembly components and improving the convenience of disassembly and assembly. Furthermore, this assembly method increases the length of the threaded connection, making the assembly more secure.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An FPC pressure head for LCD power-on detection, characterized in that, include: The main body (1), pressure block (2), pressing handle (3), FPC carrier block (4) and FPC plate (5) mounted on FPC carrier block (4); The main body (1) is located above the pressure block (2), and a compression spring (6) is provided between the main body (1) and the pressure block (2) to connect the two; the part of the main body (1) located above the pressure block (2) is provided with a through mounting hole and a linear bearing (7) installed in the mounting hole; The pressing handle (3) is located above the main body (1). One end of the pressing handle (3) is connected to the pressure block (2) through the optical axis (8) passing through the linear bearing (7). The other end of the pressing handle (3) is a free end. The part of the pressing handle (3) located between its two ends is rotatably connected to the main body (1). The FPC carrier block (4) is detachably mounted on the lower end face of the pressure block (2).

2. The FPC pressure head for LCD power-on detection according to claim 1, characterized in that, The top of the optical axis (8) is provided with an internal threaded hole, and the pressing handle (3) is connected to the optical axis (8) by a lifting stud (9) that passes through its end and is screwed into the internal threaded hole.

3. The FPC pressure head for LCD power-on detection according to claim 2, characterized in that, The end of the pressing handle (3) has a fork, the lifting stud (9) is located in the fork, the top of the lifting stud (9) has a limiting block, and the limiting block abuts against the upper surface of the pressing handle (3).

4. The FPC pressure head for LCD power-on detection according to claim 1, characterized in that, The FPC carrier block (4) is assembled with the pressure block (2) by threaded fasteners, and the screw-in and screw-out ends of the threaded fasteners are located above the pressure block (2).

5. The FPC pressure head for LCD power-on detection according to claim 4, characterized in that, The pressure block (2) has a vertically arranged groove (201) that extends through both ends on its side, and the threaded fastener is located inside the groove (201).

6. The FPC pressure head for LCD power-on detection according to claim 4, characterized in that, The threaded fastener includes a threaded sleeve (11) that is vertically fixed on the FPC carrier (4) and a set screw (12) that is screwed into the threaded sleeve (11) from above the pressure block (2).

7. The FPC pressure head for LCD power-on detection according to claim 1, characterized in that, The material of the FPC carrier block (4) is rubber.

8. The FPC pressure head for LCD power-on detection according to claim 1, characterized in that, The FPC carrier block (4) is provided with a positioning pin (13), and the pressure block (2) is provided with a positioning hole that matches the positioning pin (13).

9. The FPC pressure head for LCD power-on detection according to any one of claims 1-8, characterized in that, The linear bearing (7) has a flange (701) at one end. The flange (701) is located above the body (1) and is connected to the body (1) by screws or bolts. The lower end of the pressing handle (3) abuts against the upper surface of the flange (701).

10. The FPC pressure head for LCD power-on detection according to claim 9, characterized in that, The main body (1) has a guide hole on the outside of its mounting hole; a vertically arranged guide post (10) is provided between the main body (1) and the pressure block (2), the lower end of the guide post (10) is connected to the pressure block (2), the top end of the guide post (10) extends into the guide hole, and the top end of the guide post (10) has an internal thread hole; a compression spring (6) is fitted on the guide post (10), and its two ends abut against the main body (1) and the pressure block (2) respectively; a screw or bolt passes through the flange (701) and is screwed into the threaded hole of the guide post (10).

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