Mounting structure of rivet with internal thread on curved screen back plate

Abstract

The utility model relates to a mounting structure with an internal thread rivet on a curved screen backboard, which is characterized by comprising a curved metal backboard, the upper part of the metal backboard is provided with a double-screw bolt for an external part lock screw, the first end of the double-screw bolt is provided with a hole, and the hole is provided with an internal thread; the second end of the stud is provided with a sealing piece with the diameter larger than that of the stud, sawteeth are arranged on the periphery of the sealing piece, the sealing piece is fixedly riveted in a sinking groove of the sinking groove hole in the upper portion of the metal back plate, and the sinking groove of the sinking groove hole is formed in one side of the inner curved surface of the metal back plate. The installation structure with the internal thread rivet on the curved screen back plate is reasonable in design, and the installation firmness of the stud can be improved.

Description

Technical fields:

[0001] This utility model relates to an installation structure with internally threaded rivets on the back panel of a curved screen. Background technology:

[0002] With the increasing production and use of curved LCD screens, studs are installed on the upper part of the back panel of the curved LCD screen. These studs are used to fix the back plastic shell of the curved LCD screen by screwing them together. Currently, welding, riveting, or bolting are commonly used to install these studs. Welding or bolting requires more processing steps and has low production efficiency, so riveting has become the preferred method. However, the riveting surface between the stud and the metal back panel is currently located on the outer curved surface of the back panel of the curved screen, which can easily lead to problems with weak anchoring.

[0003] Currently, a Chinese patent, "Backplate Straight-Knot Rivet Structure and Production Method," publication number CN117718430A, has been found. This backplate straight-knot rivet structure and production method includes a backplate body, an upper pressure plate, a first stop block on one side of the upper end of a rivet fixture, a second stop block on the opposite side of the upper end of the rivet fixture, a third stop block on the side adjacent to the first stop block, a fourth stop block on the same side of the upper end of the rivet fixture as the third stop block, and a fifth stop block on the opposite side of the upper end of the rivet fixture. Although this invention effectively saves manufacturing costs and has a high degree of fit between the rivet fixture and the backplate body, and the straight-knot rivets can be precisely pressed into the rivet opening by the protrusion on the upper pressure plate, thus effectively avoiding the situation where the rivets in the rivet opening protrude from the surface of the backplate body; however, this structure cannot be used for the installation of studs on the backplate of curved LCD screens. Summary of the Invention:

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to propose an installation structure with internally threaded rivets on the back plate of a curved screen. The installation structure with internally threaded rivets on the back plate of the curved screen is reasonably designed and is conducive to improving the firmness of the stud installation.

[0005] This utility model is implemented using the following solution.

[0006] The present invention relates to an installation structure for a curved screen back plate with internally threaded rivets, characterized in that: it includes a curved metal back plate, the upper part of which is provided with a stud for locking screws on external components, the first end of the stud has an opening and internal threads on the opening, the second end of the stud has a closing plate larger than the diameter of the stud, the outer periphery of the closing plate has serrations, and the closing plate is riveted into a countersunk hole in the upper part of the metal back plate, the countersunk hole being located on one side of the inner curved surface of the metal back plate.

[0007] Preferably, the first end of the stud protrudes from the outer curved surface of the metal backing plate.

[0008] Preferably, a stepped ring is provided on the outer periphery of the opening at the first end of the stud.

[0009] Because the sealing plate is riveted into the groove of the upper recessed hole of the metal backing plate, and the outer periphery of the sealing plate is provided with serrations, the connection between the stud and the metal backing plate is more stable and reliable, and it is less likely that the stud will fall off easily when it is connected to the outer curved surface of the metal backing plate, which helps to improve the firmness of the stud installation.

[0010] This application also proposes a mold for realizing a rivet installation structure, characterized in that: it includes an upper mold and a lower mold for stamping to form a curved metal back plate, the upper surface of the lower mold is concave arc to form the outer curved surface of the metal back plate, the lower surface of the upper mold is convex arc to form the inner curved surface of the metal back plate, the upper surface of the lower mold is provided with a groove for the first end of the stud to extend into, and the lower surface of the upper mold is provided with a protrusion for riveting the second end of the stud into the upper countersunk hole of the metal back plate.

[0011] The aforementioned mold structure facilitates the stamping formation of curved metal back plates. Furthermore, since the lower surface of the upper mold is convex and the upper surface of the lower mold is concave, the first end of the stud can be inserted downward into the groove on the upper surface of the lower mold during the stamping process. This allows the stud's sealing plate to be riveted into the groove of the metal back plate's countersunk hole, ensuring the reliability of the stud's riveting. Moreover, the production operation is convenient and quick. Attached image description:

[0012] The present invention will be further described below with reference to the accompanying drawings;

[0013] Figure 1 It is a three-dimensional view of the metal back panel from one perspective;

[0014] Figure 2 This is a three-dimensional view of the metal back panel from another perspective;

[0015] Figure 3 This is a partial cross-sectional view of the metal back plate;

[0016] Figure 4 This is a partial view of the metal back panel;

[0017] Figure 5 This is a cross-sectional structural diagram of the mold used in this application;

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure of a counterexample of a mold. Detailed implementation method:

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The curved screen back panel corner support protrusion structure includes a curved metal back panel 1 with multiple reinforcing ribs 2 on the metal back panel 1. The two lower corners of the metal back panel are provided with protrusions 3 facing the inner side of the curved surface. The protrusions 3 are used to support the corners of the light guide film in the liquid crystal display. The protrusions 3 have the same protrusion height as the reinforcing ribs 2.

[0021] Because of the protrusion 3, the corner of the light guide film can be supported, so that the lower corner of the light guide film and the corner of the light guide plate in the LCD curved screen using the metal back plate 1 can fit together, avoiding large gaps between them and avoiding the problem of dark areas.

[0022] The reason for the large gap between the light guide film and the corner of the light guide plate is that during the time between the production and consumer use of the LCD curved screen, it is usually flat during transportation and storage. Under the action of gravity, a gap is generated between the corner of the light guide film and the corner of the light guide plate, resulting in dark areas.

[0023] The reason why the protrusions 3 are only provided at the two lower corners of the metal back plate is that the dark area does not appear at the upper corner of the LCD curved screen. Since the upper edge of the LCD curved screen is provided with a light strip module (the light strip module is located between the upper edge of the LCD curved screen and the upper part of the outer ring reinforcing rib 201), the light strip module plays a supporting role.

[0024] Preferably, the protrusion can be a right triangle, with the two right-angled sides of the protrusion located on the side 101 and bottom 102 of the metal back plate, respectively (the length of the two right-angled sides of the protrusion is 1-5 cm); or the protrusion can be a fan shape, with the two sides of the fan being the side and bottom of the metal back plate (the length of the two right-angled sides of the protrusion is 1-5 cm); or the protrusion can be a circle, rectangle, or ring, etc., and the circular, rectangular, or ring-shaped protrusion can be connected to or not connected to the side or bottom of the metal back plate.

[0025] The protrusion height of the raised part and the reinforcing rib can be 3-7mm.

[0026] The specific reinforcing rib 2 includes an outer annular reinforcing rib 201 and several strip-shaped reinforcing ribs 202 arranged along the length of the metal back plate and surrounding the inner side of the outer annular reinforcing rib. There are intervals between the strip-shaped reinforcing ribs 202 and between the strip-shaped reinforcing ribs 202. The outer annular reinforcing rib 201 and the strip-shaped reinforcing ribs 202 can be of equal or unequal width. By setting the outer annular reinforcing rib 201 and several strip-shaped reinforcing ribs 202, the overall shape stability of the metal back plate 1 can be enhanced.

[0027] The outer annular reinforcing rib 201 is spaced with the four sides of the metal back plate by a spacer band 106, and the protrusion is disposed in the spacer band and located at the lower corner of the metal back plate.

[0028] A stud 4 for locking screws to external components (such as the plastic shell on the back of a curved LCD screen) is provided on the upper part of the metal back plate 1. The first end of the stud 4 has an opening and an internal thread 401. During installation, a screw is inserted into the countersunk hole of the external component and connected to the internal thread 401. The second end of the stud has a closing plate 402 larger than the diameter of the stud. The closing plate 402 can be circular, rectangular, or elliptical, but is preferably circular. The outer periphery of the closing plate has serrations 403 (the serrations 403 are located at the countersunk hole 10). After the groove of 3 is riveted, it has better torque resistance. The sealing piece 402 is riveted in the groove of the groove hole 103 on the upper part of the metal back plate. The groove of the groove hole 103 is located on the inner curved surface of the metal back plate 1. Since the sealing piece 402 is riveted in the groove of the groove hole 103 on the upper part of the metal back plate, and the outer periphery of the sealing piece is provided with serrations 403, the connection between the stud 4 and the metal back plate 1 can be more stable and reliable, and it is not easy for the stud 4 to fall off the outer curved surface of the metal back plate 1.

[0029] For ease of use and strong screw fastening force, the first end of the stud 4 protrudes from the outer curved surface 104 of the metal back plate (allowing for a longer screw connection length with the screw), and a stepped ring 404 is provided around the opening at the first end of the stud (this stepped ring allows for a longer screw connection length with the screw and better contact with the plastic shell on the back of the LCD curved screen).

[0030] This utility model relates to a mold for stamping curved screen back panels, comprising an upper mold A1 and a lower mold A2 for stamping to form a curved metal back panel. The upper surface of the lower mold A2 is concave arc-shaped to form the outer curved surface 104 of the metal back panel, and the lower surface of the upper mold A1 is convex arc-shaped to form the inner curved surface 105 of the metal back panel. The upper surface of the lower mold is provided with a groove A3 for the first end of a stud 4 to extend into, and the lower surface of the upper mold is provided with a protrusion A4 for riveting the second end of the stud into the upper recessed hole of the metal back panel.

[0031] The above-described mold structure facilitates the stamping formation of curved metal back plates. Furthermore, since the lower surface of the upper mold A1 is convex and the upper surface of the lower mold A2 is concave, the first end of the stud 4 can be inserted downward into the groove A3 on the upper surface of the lower mold during the stamping process. This allows the closing piece 402 of the stud 4 to be riveted into the groove of the countersunk hole 103 in the metal back plate, which helps ensure the reliability of the stud 4 riveting.

[0032] Furthermore, if the upper mold and lower mold are designed in opposite ways (e.g.) Figure 6As shown in the diagram, the lower surface of the upper die is concave, and the upper surface of the lower die is convex. Therefore, to secure the stud 4 to the outer curved surface 104 of the metal backing plate, the stud 4 and the outer curved surface of the metal backing plate can only be directly riveted, resulting in an unstable connection. To adapt to this upper and lower die design and to avoid the problem of an unstable connection between the stud 4 and the outer curved surface of the metal backing plate, the stud 4 can be riveted into the countersunk hole 103 of the metal backing plate. Specifically, the first end of the stud 4 faces upward and passes through the inner curved surface 105 of the metal backing plate to the outer curved surface 104 before riveting. During the stamping process, this ensures a more secure connection. First, a stud needs to be placed in the recess of the lower die (this recess is equivalent to pre-positioning the stud, but since the stud needs to be riveted to the metal back plate, the contact area between the stud and the recess is small or even non-existent). Then, the metal back plate is placed on top. During placement, the countersunk hole on the metal back plate needs to be aligned with the stud. Because the contact area between the stud and the recess is small, the stud is prone to deviation, which makes it inconvenient to place the metal back plate, thus affecting processing efficiency and assembly line operation. Even if the stud 4 is inserted into the recess hole 103 from bottom to top and then placed into the die, this operation will cause the stud 4 to fall due to its own weight, making it impossible to perform the stamping action.

[0033] Using the mold design of this application (the upper surface of the lower mold A2 is concave arc-shaped, the lower surface of the upper mold A1 is convex arc-shaped, the upper surface of the lower mold is provided with a groove A3 for the first end of the stud 4 to extend into, and the lower surface of the upper mold is provided with a protrusion A4 for riveting the second end of the stud into the upper recessed hole of the metal backing plate), during use, the metal backing plate to be stamped can be placed on the lower mold first, and then the first end of the stud 4 can be passed through the recessed hole 103 from the inner curved surface to the outer curved surface and extended into the groove A3 of the lower mold, so that the stud 4 can be installed conveniently, quickly, accurately, and with high stability.

[0034] Similarly, the upper surface of the lower mold is provided with a boss A5 for forming a metal back plate protrusion, and the lower surface of the upper mold is provided with a recess A6 for forming a metal back plate protrusion.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A mounting structure with internally threaded rivets on a curved screen back panel, characterized in that: The metal back plate is curved, and an upper portion of the metal back plate is provided with a stud for locking screws of external devices. A first end of the stud is provided with a hole and an internal thread on the hole. A second end of the stud is provided with a closing piece which is larger than the diameter of the stud. The closing piece is provided with a sawtooth on the outer periphery. The closing piece is riveted in a sink of a sink hole in the upper portion of the metal back plate. The sink of the sink hole is provided on an inner curved surface of the metal back plate. 2.The mounting structure of the curved screen backboard with the in-band threaded rivet according to claim 1, wherein: The first end of the stud protrudes from an outer curved surface of the metal back plate. 3.The mounting structure of the curved screen backboard with the in-band threaded rivet according to claim 2, characterized in that: The hole on the first end of the stud is provided with a stepped ring on the outer periphery.

4. A die for implementing the rivet mounting structure according to claim 3, characterized by: The upper die and the lower die are used for stamping the curved metal back plate. An upper surface of the lower die is concave to form an outer curved surface of the metal back plate. A lower surface of the upper die is convex to form an inner curved surface of the metal back plate. The upper surface of the lower die is provided with a groove for the first end of the stud to extend into. The lower surface of the upper die is provided with a convex column for riveting the second end of the stud into a sink hole in the upper portion of the metal back plate.

5. The mold of claim 4, wherein: The upper surface of the lower die is provided with a boss for forming a protruding portion of the metal back plate. The lower surface of the upper die is provided with a recess for forming the protruding portion of the metal back plate.

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