Light leakage detection clamp

Abstract

The utility model relates to a light leakage detection clamp which is used for carrying out light leakage investigation on a display module and comprises a bottom box, a limiting groove and a detection control panel are arranged in the bottom box, the display module is arranged in the limiting groove, a cover plate is rotatably connected to the left side of the bottom box, a plurality of photoresistors are installed on the lower surface of the cover plate, and the photoresistors are connected with the detection control panel. The photoresistor is electrically connected with the detection control panel through a wire, and the photoresistor is used for detecting the edge of the display module in the limiting groove; the display module is placed in the limiting groove, the cover plate and the bottom box are combined together, light leakage caused by entering of external light is avoided, the light sensitive resistor pasted to the lower portion of the cover plate is used for detecting an area prone to light leakage during detection, the area larger than a set threshold value is judged to be light leakage, and a product NG is directly conveyed and repaired. Therefore, the unqualified display modules are repaired after being screened, the situation that the unqualified display modules flow out to the client to cause goods return is avoided, and the delivery quality of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen detection, in particular to a light leakage detection fixture. Background Art

[0002] During the production process of display modules, sometimes after the whole machine is assembled, when the appearance and function are tested, it is found that the LCD has light leakage, bright spots and other phenomena. The so-called LCD light leakage and bright spots are caused by the fact that the outer frame of the LCD is not tightly packaged, and the edge is brighter than the middle, because the light of the LCD backlight tube leaks out from the gap of the frame. When the LCD has problems such as light leakage and bright spots, the mobile phone needs to be reworked and the bad LCD removed. This process not only takes a lot of time, but also has the risk of damaging the machine when it is repaired. The light leakage problem of module shipments will cause customers to return batches, resulting in repairs and re-inspections, wasting a lot of manpower and material resources. Utility Model Content

[0003] The utility model aims to provide a light leakage detection fixture, which aims to solve the problem that the existing display module is not checked for light leakage after the whole machine is assembled. If the display module has light leakage, bright spots and other phenomena, it will cause customers to return the product in batches, resulting in repair and re-inspection, wasting a lot of manpower and material resources.

[0004] In order to solve the above technical problems, a light leakage detection fixture is provided, including a base box, a limit slot and a detection control board are arranged inside the base box, a display module is arranged inside the limit slot, a cover plate is rotatably connected to the left side of the base box, a plurality of photoresistors are installed on the lower surface of the cover plate, the photoresistors are electrically connected to the detection control board through wires, and the photoresistors are used to detect the edges of the display module in the limit slot.

[0005] Furthermore, the bottom box and the cover plate are both made of plastic material.

[0006] Furthermore, the left side of the bottom box is fixedly connected to a fixing seat by screws, the right side of the fixing seat is rotatably connected to the cover plate by a rotating shaft, and a torsion spring is installed on the outer surface of the rotating shaft.

[0007] Furthermore, a handle is fixedly connected to the right side of the front side of the cover plate.

[0008] Furthermore, a sealing gasket is fixedly connected to the upper surface of the bottom box and located at the edge of the limiting groove, and buckle grooves are provided on both the left and right sides of the limiting groove.

[0009] Furthermore, a mounting groove is provided at the bottom end of the front side of the base box, the detection control board is installed inside the mounting groove, the upper surface of the mounting groove is fixedly connected to a fixing plate by screws, a through hole is provided on the fixing plate, and the wire is located inside the through hole.

[0010] Furthermore, the inner left side of the limiting groove is rotatably connected to a base plate through a round rod, an oblique groove is provided on the right lower surface of the base plate, a spring is installed between the base plate and the inner bottom wall of the limiting groove, a movable block is provided at the right bottom end of the limiting groove, the lower surface of the movable block is slidably connected to the inner bottom wall of the limiting groove, and the upper surface of the movable block is fixedly connected to a protrusion corresponding to the oblique groove.

[0011] Furthermore, the right side of the base box is rotatably connected to a screw rod through a bearing, the left side of the screw rod passes through the movable block and is rotatably connected to the left side of the limiting groove, the screw rod is threadedly connected to the movable block, and the right side of the screw rod is fixedly connected to a knob.

[0012] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0013] Compared with the prior art, the light leakage detection fixture provided by the utility model places the display module in the limit groove and merges the cover plate with the bottom box to prevent external light from entering and causing light leakage. During detection, the light leakage-prone area is detected through the photoresistor pasted under the cover plate, and the area greater than the set threshold is judged as light leakage. The product NG is directly sent for repair, so that unqualified display modules can be screened and returned for repair, avoiding the outflow of unqualified display modules to the client and causing returns, thereby improving the factory quality of the product.

[0014] Compared with the prior art, the light leakage detection fixture provided by the utility model, when detecting, turns the knob to drive the screw to rotate. Since the screw is threadedly connected to the movable block, the movable block squeezes the lower surface of the bottom plate through the protrusion during the rotation process. At this time, the bottom plate drives the display module to rotate slightly, thereby meeting the inspection at multiple angles and improving the effect of light leakage inspection of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the connection structure of the light leakage detection fixture of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the light leakage detection fixture of the utility model;

[0018] Figure 3 This is a schematic diagram of the opening structure of the light leakage detection fixture of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the light leakage detection fixture of the utility model;

[0020] Figure 5 The utility model is a light leakage detection fixture Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Among them: 1. bottom box; 2. limit groove; 3. detection control board; 4. display module; 5. cover plate; 6. photoresistor; 7. wire; 101. screw; 102. fixing seat; 103. rotating shaft; 104. torsion spring; 501. handle; 8. sealing gasket; 9. buckle groove; 10. installation groove; 11. screw; 12. fixing plate; 13. through hole; 201. round rod; 202. bottom plate; 203. oblique groove; 204. spring; 205. movable block; 206. bump; 207. screw rod; 208. knob. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] In one possible implementation,

[0026] Please refer to Figure 1-Figure 5The embodiment of the utility model provides a light leakage detection fixture, including a bottom box 1, a limit slot 2 and a detection control board 3 are arranged inside the bottom box 1, a display module 4 is arranged inside the limit slot 2, a cover plate 5 is rotatably connected to the left side of the bottom box 1, and a plurality of photoresistors 6 are installed on the lower surface of the cover plate 5. The photoresistors 6 are arranged in areas prone to light leakage. In this way, by arranging the photoresistors 6 in the edge areas prone to light leakage, the light leakage conditions of each area are converted into photoresistance values, and the data deviation of the normal screen is compared to exceed the threshold value for judgment. The photoresistors 6 are electrically connected to the detection control board 3 through the wires 7, and the photoresistors 6 are used to detect the edge of the display module 4 in the limit slot 2.

[0027] The light leakage detection fixture provided above places the display module 4 in the limit groove 2, and the cover plate 5 is combined with the bottom box 1 to prevent external light from entering and causing light leakage. During the detection, the light-sensitive resistor 6 pasted under the cover plate 5 is used to detect the area prone to light leakage. When the photoresistor 6 detects a value greater than the set threshold, it is transmitted to the detection control board 3 to be judged as light leakage. When the photoresistor 6 detects a value not greater than the set threshold, it is transmitted to the detection control board 3 to be judged as no light leakage. The setting of the threshold is calculated after collecting a certain number of normal screens and light leakage abnormal screen data, thereby improving the effect of light leakage inspection of the display module 4, judging the area greater than the set threshold as light leakage, and directly sending the product for repair if it is NG, thereby screening out the unqualified display module 4 for repair, thereby avoiding the unqualified display module 4 from flowing out to the client and causing returns, thereby improving the factory quality of the product.

[0028] In this embodiment, the bottom box 1 and the cover plate 5 are both made of plastic material, which makes the overall manufacturing easier and more convenient. The bottom box 1 and the cover plate 5 made of plastic material are light in weight and easy to take.

[0029] In this embodiment, the left side of the bottom box 1 is fixedly connected to a fixing seat 102 via a screw 101 , and the right side of the fixing seat 102 is rotatably connected to the cover plate 5 via a rotating shaft 103 , and a torsion spring 104 is installed on the outer surface of the rotating shaft 103 .

[0030] This arrangement makes it more convenient to connect the bottom box 1 and the cover plate 5, so that the cover plate 5 can be opened to better replace the display module 4. At the same time, the restoring force of the torsion spring 104 can tightly combine the cover plate 5 and the bottom box 1 together, and there will be no phenomenon of loose closure and light leakage.

[0031] In this embodiment, a handle 501 is fixedly connected to the right side of the front of the cover plate 5, a sealing gasket 8 is fixedly connected to the upper surface of the bottom box 1 and at the edge of the limiting groove 2, and buckle grooves 9 are provided on both sides of the limiting groove 2.

[0032] In this arrangement, the cover plate 5 is opened by the handle 501 and rotated around the rotating shaft 103, and then the display module 4 is placed in the limiting groove 2, the cover plate 5 and the bottom box 1 are combined together, and they are tightly connected by the torsion spring 104 and the sealing gasket 8 to prevent external light from entering and causing light leakage. The buckle grooves 9 opened on the left and right sides of the limiting groove 2 are convenient for taking out the display module 4 for replacement, thereby improving the efficiency of detection.

[0033] In this embodiment, a mounting groove 10 is provided at the bottom end of the front side of the base box 1, and the detection control board 3 is installed inside the mounting groove 10. The upper surface of the mounting groove 10 is fixedly connected to a fixing plate 12 by screws 11. A through hole 13 is provided on the fixing plate 12, and the wire 7 is located inside the through hole 13.

[0034] In this way, the detection control board 3 is hidden inside the bottom box 1 , and the lead 7 of the photoresistor 6 passes through the punched through hole 13 after the flying wire is connected to the detection control board 3 in the bottom box 1 .

[0035] In this embodiment, if Figure 4 and Figure 5 As shown, the inner left side of the limiting groove 2 is rotatably connected to the bottom plate 202 through a round rod 201, an oblique groove 203 is opened on the lower surface of the right side of the bottom plate 202, a spring 204 is installed between the bottom plate 202 and the inner bottom wall of the limiting groove 2, a movable block 205 is arranged at the bottom end of the right side of the limiting groove 2, the lower surface of the movable block 205 is slidably connected to the inner bottom wall of the limiting groove 2, and the upper surface of the movable block 205 is fixedly connected to a protrusion 206 corresponding to the oblique groove 203, and the right side of the bottom box 1 is rotatably connected to a screw rod 207 through a bearing, the left side of the screw rod 207 passes through the movable block 205 and is rotatably connected to the left side of the limiting groove 2, the screw rod 207 is threadedly connected to the movable block 205, and the right side of the screw rod 207 is fixedly connected to a knob 208.

[0036] When the detection is set in this way, the knob 208 is turned to drive the screw rod 207 to rotate. Since the screw rod 207 is threadedly connected to the movable block 205, the movable block 205 squeezes the lower surface of the bottom plate 202 through the protrusion 206 during the rotation. The bottom plate 202 rotates around the round rod 201 under the pressure of the protrusion 206. At this time, the bottom plate 202 drives the display module 4 to fine-tune the angle.

[0037] The technical solution provided by the utility model is as follows: Figure 1-5As shown, when in use, the cover plate 5 is opened by the handle 501 and rotated around the rotating shaft 103, and then the display module 4 is placed in the limiting groove 2, and the cover plate 5 and the bottom box 1 are merged together, and the torsion spring 104 and the sealing gasket 8 are used to make them tightly connected to prevent external light from entering and causing light leakage. During detection, the photoresistor 6 pasted under the cover plate 5 is used to detect the area prone to light leakage, and at the same time, the knob 208 is turned to drive the screw rod 207 to rotate. Since the screw rod 207 is threadedly connected to the movable block 205, the movable block 205 squeezes the lower surface of the bottom plate 202 through the protrusion 206 during the rotation. At this time, the bottom plate 202 drives the display module 4 to rotate. When the photoresistor 6 detects a value greater than the set threshold, it is transmitted to the detection control board 3 to determine it as light leakage. When the photoresistor 6 detects a value not greater than the set threshold, it is transmitted to the detection control board 3 to determine it as no light leakage. The area greater than the set threshold is judged as light leakage, and the product NG is directly sent for repair.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A light leakage detection fixture, characterized in that: The invention comprises a bottom box (1), wherein a limit slot (2) and a detection control board (3) are arranged inside the bottom box (1), wherein a display module (4) is arranged inside the limit slot (2), wherein a cover plate (5) is rotatably connected to the left side of the bottom box (1), wherein a plurality of photoresistors (6) are mounted on the lower surface of the cover plate (5), wherein the photoresistors (6) are electrically connected to the detection control board (3) via wires (7), and wherein the photoresistors (6) are used to detect the edge of the display module (4) in the limit slot (2).

2. The light leakage detection fixture according to claim 1, characterized in that: The base box (1) and the cover plate (5) are both made of plastic material.

3. The light leakage detection fixture according to claim 2, characterized in that: The left side of the bottom box (1) is fixedly connected to a fixing seat (102) via a screw (101), and the right side of the fixing seat (102) is rotatably connected to the cover plate (5) via a rotating shaft (103), and a torsion spring (104) is installed on the outer surface of the rotating shaft (103).

4. The light leakage detection fixture according to claim 1, characterized in that: A handle (501) is fixedly connected to the right side of the front side of the cover plate (5).

5. The light leakage detection fixture according to claim 4, characterized in that: A sealing pad (8) is fixedly connected to the upper surface of the bottom box (1) and located at the edge of the limiting groove (2), and buckle grooves (9) are provided on both the left and right sides of the limiting groove (2).

6. The light leakage detection fixture according to claim 5, characterized in that: The bottom end of the front face of the base box (1) is provided with a mounting groove (10), the detection control board (3) is mounted inside the mounting groove (10), the upper surface of the mounting groove (10) is fixedly connected to a fixing plate (12) by means of screws (11), the fixing plate (12) is provided with a through hole (13), and the wire (7) is located inside the through hole (13).

7. The light leakage detection fixture according to claim 6, characterized in that: The left side of the interior of the limiting groove (2) is rotatably connected to a bottom plate (202) via a round rod (201); an oblique groove (203) is provided on the lower surface of the right side of the bottom plate (202); a spring (204) is installed between the bottom plate (202) and the inner bottom wall of the limiting groove (2); a movable block (205) is provided at the bottom end of the right side of the limiting groove (2); the lower surface of the movable block (205) is slidably connected to the inner bottom wall of the limiting groove (2); and a protrusion (206) corresponding to the oblique groove (203) is fixedly connected to the upper surface of the movable block (205).

8. The light leakage detection fixture according to claim 7, characterized in that: The right side of the bottom box (1) is rotatably connected to a screw rod (207) via a bearing, the left side of the screw rod (207) passes through the movable block (205) and is rotatably connected to the left side of the limiting groove (2), the screw rod (207) is threadedly connected to the movable block (205), and the right side of the screw rod (207) is fixedly connected to a knob (208).

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