A waterproof structure for display module and power box

Abstract

The present invention relates to the field of waterproof display screen technology, and in particular to a waterproof structure for a display module and a power box, comprising a display module and a power box, wherein the display module is provided with a plug hole, and the power box is provided with an annular plug wall, wherein the outer end of the plug hole is in an outwardly expanding opening shape, and a sealing ring is sleeved on the outer side of the annular plug wall, wherein the cross section of the sealing ring is circular, and a gap is formed when the inner wall of the plug hole and the annular plug wall cooperate, wherein the gap is smaller than the cross-sectional diameter of the sealing ring in its natural state. The waterproof structure for a display module and a power box obtained by the present invention forms a long gap between the annular plug wall and the plug hole, and during the plugging process between the two, the sealing ring with a circular cross section rolls in the gap, generating a small rolling friction force, and is squeezed and deformed by the two, thereby achieving a seal between the plug hole and the annular plug wall, with good sealing effect and simple assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof display screens, and in particular to a waterproof structure of a display module and a power box. Background Art

[0002] In the prior art, there are generally two types of sealing between assembly structures. One type is precision machining, which makes the fitting clearance extremely small or even interference fit to achieve waterproofing. However, this waterproofing effect is general and requires high machining accuracy.

[0003] Currently, the compression of soft materials is primarily used to compensate for structural processing errors and achieve waterproofing: a compressible material is placed between mating parts, and its elastic deformation fills the gap to achieve waterproofing. Soft materials are directly compressed, with two methods: end-face compression and side-face compression. End-face compression requires the structure to withstand significant end-face compression forces. For the display cabinet and module, if subjected to large planar compression forces, the flatness deformation error of the display will increase. Lateral compression solves the end-face force problem, but there is significant friction between the soft material and the side of the structural part during insertion, making insertion difficult. To reduce the insertion force, the amount of compression must be reduced, but less compression poses a risk of leakage. Summary of the Invention

[0004] In order to solve the above technical deficiencies, the present invention provides a waterproof structure for a display module and a power box, which can utilize rolling friction to reduce the insertion force required during the compression process of the sealing ring, so as to facilitate assembly and have a good compression amount, thereby achieving a good waterproof effect.

[0005] The present invention discloses a waterproof structure of a display module and a power box, comprising a display module and a power box. The display module is provided with a plug hole, and the power box is provided with an annular plug wall that cooperates with the plug hole. The cross-sections of the axial parts of the outer side surface of the annular plug wall are the same. The outer end of the plug hole is in an outwardly expanding opening shape, and the cross-sections of the axial parts inside the plug hole are the same. A sealing ring is sleeved on the outer side of the annular plug wall. The cross-section of the sealing ring is circular. A gap is formed when the inner wall of the plug hole and the annular plug wall cooperate. The gap is smaller than the cross-sectional diameter of the sealing ring in a natural state.

[0006] An annular protrusion is provided at the end of the annular plug-in wall, and the annular protrusion is used to restrict the sealing ring on the annular plug-in wall. The height of the annular protrusion is smaller than the gap between the annular plug-in wall and the plug-in hole.

[0007] At least two spring sheets are fixed on the power box on the side of the annular plug wall. The spring sheets are spaced around the annular plug wall, and the ends of the spring sheets extend to the sealing ring. The spring sheets hold the sealing ring at the outer end of the annular plug wall.

[0008] The plug-in hole is rectangular, and the annular plug-in wall is also rectangular.

[0009] The waterproof structure of the display module and the power box obtained by the present invention forms a long gap between the annular plug-in wall and the plug-in hole. During the plug-in process of the two, the sealing ring with a circular cross-section rolls in the gap, generating a small rolling friction force, and is squeezed and deformed by the two at the same time, thereby achieving sealing between the plug-in hole and the annular plug-in wall. The sealing effect is good and the assembly is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structural cross section of the present invention;

[0011] Figure 2 This is a partial enlarged schematic diagram of point A of the present invention;

[0012] Figure 3 This is a partial enlarged schematic diagram of point B of the present invention;

[0013] Figure 4 A three-dimensional diagram of the power box and the display module of the present invention;

[0014] Figure 5 for Figure 4 A partial enlarged schematic diagram. DETAILED DESCRIPTION

[0015] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0016] Example 1:

[0017] like Figure 1 、 Figure 2 、 Figure 3 As shown, the present invention discloses a waterproof structure of a display module and a power box, including a display module 2 and a power box 1. The display module 2 is provided with a plug hole 3, and the power box 1 is provided with an annular plug wall 4 that cooperates with the plug hole 3. The cross-sections of the various axial parts of the outer side surface of the annular plug wall 4 are the same, and the outer end of the plug hole 3 is an outward-expanding opening shape, and the cross-sections of the various axial parts inside the plug hole 3 are the same. A sealing ring 5 is sleeved on the outer side of the annular plug wall 4, and the cross-section of the sealing ring 5 is circular. A gap is formed when the inner wall of the plug hole 3 cooperates with the annular plug wall 4, and the gap is smaller than the cross-sectional diameter of the sealing ring 5 in a natural state.

[0018] During the display screen production process, the display module 2 and power supply box 1 are both secured to the display case. A power strip connects the power supply box 1 and display module 2 for power and signal transmission. Therefore, the display module 2 is provided with a plug-in hole 3, and the power supply box 1 is provided with a circular plug-in wall 4. Once the power supply box 1 and display module 2 are secured to the case, the circular plug-in wall 4 on the power supply box 1 plugs into the plug-in hole 3. The holes within the circular plug-in wall 4 are used to arrange the power strip, achieving electrical connection between the components within the power supply box 1 and the display module 2.

[0019] During the insertion process, the sealing ring 5 is first sleeved onto the annular insertion wall 4, with the sealing ring 5 positioned at the outer end of the annular insertion wall 4, where the outer end refers to the end of the annular insertion wall 4 that is inserted into the insertion hole 3. The annular insertion wall 4 is then aligned with the corresponding insertion hole 3. At this point, the sealing ring 5 on the annular insertion wall 4 is within the open structure at the outer end of the insertion hole 3, and there is no compression between the annular insertion wall 4, the insertion hole 3, and the sealing ring 5. A certain force is then applied to force the annular insertion wall 4 into the insertion hole 3. During this process, relative displacement occurs between the annular insertion wall 4 and the insertion hole 3. Under the action of the open structure, the gap between them gradually decreases, and the pressure on the sealing ring 5 gradually increases. When the sliding friction force exceeds the rolling friction force, the sealing ring 5 rolls from the end of the insertion hole 3 inward to the middle portion between the insertion hole 3 and the annular insertion wall 4. At this point, because the gap between the two is smaller than the cross-sectional diameter of the sealing ring 5, the sealing ring 5 is compressed, achieving a good sealing effect between the two.

[0020] The above assembly achieves side sealing between the power supply box 1 and the display module 2, preventing pressure on the display module 2 and ensuring the flatness of the display module 2. Furthermore, the use of a circular-cross-section sealing ring 5 allows the sealing ring 5 to roll during insertion, replacing the sliding friction during insertion with rolling friction. This significantly reduces the required insertion force, minimizes damage to the sealing ring 5, and facilitates assembly.

[0021] An annular protrusion 6 is provided at the end of the annular plug-in wall 4 , and the annular protrusion 6 is used to restrict the sealing ring 5 on the annular plug-in wall 4 . The height of the annular protrusion 6 is smaller than the gap between the annular plug-in wall 4 and the plug-in hole 3 .

[0022] The provision of annular protrusion 6 effectively prevents the sealing ring 5 from falling off the annular insertion wall 4, enhancing stability and reliability during assembly. The provision of annular protrusion 6 forms a wide, annular groove on the outside of the annular insertion wall 4, within which the sealing ring 5 rolls. Because the width of the wide groove is relatively large, roughly equal to the insertion travel of the annular insertion wall 4 into the insertion hole 3, the sealing ring 5 has sufficient rolling travel during the insertion process, preventing interference.

[0023] like Figure 4 、 Figure 5 As shown, at least two spring clips 7 are fixed on the power box 1 on the side of the annular plug-in wall 4. The spring clips 7 are arranged at intervals around the annular plug-in wall 4, and the ends of the spring clips 7 extend to the sealing ring 5. The spring clips 7 keep the sealing ring 5 at the outer end of the annular plug-in wall 4.

[0024] The inserting hole 3 is rectangular, and the annular inserting wall 4 is also rectangular.

[0025] Under normal circumstances, the power strip electrically connected to the power box 1 and the display module 2 is a rectangular structure, so the shape of the annular plug wall 4 and the shape of the plug hole 3 can both adopt a rectangular structure, which can reduce the waste of space. As for the arrangement of the spring clips 7 on the side of the annular plug wall 4, the specific number can be selected according to actual needs. Generally, two spring clips 7 are arranged corresponding to each annular plug wall 4, and the two spring clips 7 are arranged on opposite sides of the annular plug wall 4. The spring clip 7 has a certain elasticity. In the natural state, the end of the spring clip 7 will support the sealing ring 5, so that it remains at the outer end of the annular plug wall 4, at the location where it connects with the annular protrusion 6. Of course, under the action of external force during the plugging process, the spring clip 7 will deform itself, so as not to affect the process of the annular plug wall 4 being inserted into the plug hole 3, and the sealing ring 5 will not be affected and enter between the annular plug wall 4 and the plug hole 3. When the power box 1 and the display module 2 are disassembled and assembled, once the annular plug-in wall 4 and the plug-in hole 3 are released, the spring 7 will push the sealing ring 5 to the outer end to ensure that the sealing ring 5 can stably and quickly enter between the annular plug-in wall 4 and the plug-in hole 3 during the subsequent assembly process, with high stability.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to the interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any simplified modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A waterproof structure for a display module and a power box, comprising a display module and a power box, wherein the display module is provided with a plug hole, and the power box is provided with an annular plug wall that cooperates with the plug hole, wherein: The cross-sections of the various axial parts of the outer side surface of the annular plug-in wall are the same, the outer end of the plug-in hole is an outward-expanding opening, and the cross-sections of the various axial parts inside the plug-in hole are the same. A sealing ring is sleeved on the outer side of the annular plug-in wall, and the cross-section of the sealing ring is circular. A gap is formed after the inner wall of the plug-in hole and the annular plug-in wall cooperate, and the gap is smaller than the cross-sectional diameter of the sealing ring in a natural state; an annular protrusion is provided at the end of the annular plug-in wall, and the annular protrusion is used to limit the sealing ring on the annular plug-in wall, and the height of the annular protrusion is smaller than the gap between the annular plug-in wall and the plug-in hole; at least two spring clips are fixed on the power box on the side of the annular plug-in wall, and the spring clips are arranged at intervals around the annular plug-in wall, and the ends of the spring clips extend to the sealing ring, and the spring clips keep the sealing ring on the outer end of the annular plug-in wall.

2. The waterproof structure of a display module and a power box according to claim 1, characterized in that: The plug-in hole is rectangular, and the annular plug-in wall is also rectangular.

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