A platform protective cover for polishing mobile phone glass back covers

Abstract

This utility model discloses a platform protective cover for polishing mobile phone glass back covers, relating to the field of mobile phone glass back cover polishing processing. It includes: an upper cover and a bottom cover, with the product clamped between the upper and bottom covers; the upper cover includes two spaced-apart through-hole positioning holes and a fixing screw hole disposed between the two positioning holes; the bottom cover includes pins corresponding to the positioning holes and screw holes corresponding to the fixing screw holes; the upper bottom surface of the bottom cover is in close contact with the concave surface of the glass boss of the product, and the upper cover is in close contact with the convex surface of the glass boss; the two pins pass through the boss through-holes and extend into the positioning holes; fasteners are installed between the fixing screw holes and the screw holes for locking; the upper and bottom covers have the same shape as the convex and concave surfaces of the glass boss; thus achieving the purpose of covering and protecting the parts that do not need to be processed during the production and processing of glass products.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone glass back cover polishing processing, specifically to a platform protective cover plate for mobile phone glass back cover polishing. Background Technology

[0002] With the development of electronic products, glass back covers are widely used in mobile phones, tablets, and other products. The camera bump on the glass back cover is a common design feature among manufacturers. This involves designing a protrusion on the glass panel to increase the space for mounting the lens module, allowing electronic products to accommodate larger camera modules. The glass back cover requires precise drilling and bending to match the height difference of the lens module, allowing the lens portion to protrude from the glass surface to accommodate a larger camera module. During manufacturing, it is necessary to cover the platform area to prevent over-polishing, which could lead to defects in product size and appearance.

[0003] The common method now is to use protective covers for covering. However, most existing protective covers are specialized and similar in shape to the parts to be covered. They are assembled by fitting the shapes together to cover and protect the relevant parts. However, in order to restrict the rotational freedom of the protective cover, more than two holes are required for positioning. But when the back cover glass protrusion has only one hole, there is a lack of multi-point fixing mechanism, which cannot resist the rotational torque. This significantly increases the risk of rotational detachment during polishing, affecting the production process. Furthermore, relying solely on the interference fit between the cylinder and the hole for fixing, without auxiliary reinforcement measures, results in a higher probability of the plate falling off, increasing the safety hazard of fragmentation.

[0004] Therefore, it is necessary to provide a platform protective cover for polishing mobile phone glass back covers to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a platform protective cover for polishing mobile phone glass back covers, comprising:

[0006] Includes a top cover and a bottom cover, with the product held between the top cover and the bottom cover;

[0007] The top cover includes two spaced-apart through-hole positioning holes and a fixing screw hole between the two positioning holes; the bottom cover includes pins corresponding to the positioning holes and screw holes corresponding to the fixing screw holes; the upper bottom surface of the bottom cover is in close contact with the concave surface of the glass boss of the product, and the top cover is in close contact with the convex surface of the glass boss; the two pins pass through the through-hole of the boss and extend into the positioning holes; fasteners are installed between the fixing screw hole and the screw hole for locking; the top cover and the bottom cover have the same shape as the convex and concave surfaces of the glass boss.

[0008] Furthermore, as a preferred embodiment, the bottom cover matches the concave shape of the glass boss, and the lower edge of the bottom cover is in close contact with the vertical side of the concave surface of the glass boss, thus restricting the rotation of the bottom cover.

[0009] Furthermore, as a preferred embodiment, the boss through hole and the two pins are interference fit, and the two pins are respectively pressed against the side of the boss through hole.

[0010] Furthermore, preferably, the size of the upper cover is slightly larger than the size of the bottom cover.

[0011] Furthermore, as a preferred embodiment, the upper surface of the cover is curved.

[0012] Furthermore, as a preferred embodiment, the edges of the pin and the bottom cover and the lower cover are chamfered.

[0013] Compared with the prior art, this utility model provides a platform protective cover for polishing mobile phone glass back covers, which has the following beneficial effects:

[0014] In this embodiment of the utility model, a pin replaces the original fitting structure, which enhances the versatility of the protective cover. It can also be used when the hole on the glass boss is a single hole. The bottom cover is installed on the concave surface of the glass boss of the product. The shape restricts the rotational freedom of the bottom cover. The pin and the positioning hole are connected to restrict the rotation of the bottom cover, which in turn restricts the rotational freedom of the top cover connected to the bottom cover. At the same time, the bottom cover and the top cover are fastened and locked together by fasteners. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the protective cover provided in an embodiment of the present utility model;

[0016] Figure 2 A front view of the bottom cover of the protective cover plate provided in an embodiment of this utility model;

[0017] Figure 3 A partial structural diagram of the bottom cover of the protective cover plate provided in an embodiment of this utility model;

[0018] Figure 4 A front view of the top cover of the protective cover plate provided in an embodiment of this utility model;

[0019] Figure 5 A partial structural diagram of the upper cover of the protective cover plate provided in an embodiment of this utility model;

[0020] In the diagram: 1. Product; 11. Glass boss; 12. Boss through hole; 2. Top cover; 21. Top surface; 22. Bottom surface; 23. Positioning hole; 24. Fixing screw hole; 25. Top cover edge; 3. Bottom cover; 31. Top bottom surface; 32. Bottom bottom surface; 33. Pin; 34. Screw hole; 35. Bottom cover edge. Detailed Implementation

[0021] Please see Figures 1-5In this embodiment of the present invention, a platform protective cover for polishing mobile phone glass back covers includes:

[0022] The product 1 is sandwiched between the upper cover 2 and the bottom cover 3;

[0023] The bottom cover 3 has the same shape as the glass protrusion 11 of product 1. The upper bottom surface 31 of the bottom cover 3 has the same curvature as the concave surface of the glass protrusion 11, and the shape of the glass protrusion 11 of product 1 is not restricted. The bottom cover 3 is installed into the concave surface of the glass protrusion 11. The lower cover edge 35 of the bottom cover 3 is in close contact with the vertical side of the concave surface of the glass protrusion 11, and the upper bottom surface 31 is in close contact with the concave surface of the glass protrusion 11. When the glass protrusion 11 and the bottom cover 3 are not circular, due to geometric interference, the bottom cover 3 does not rotate during related production and processing, so that the upper cover 2 connected to the bottom cover 3 does not rotate. This ensures that the area of ​​the upper cover 2 covering the glass protrusion 11 does not change, avoiding product defects caused by processing. When the glass protrusion 11 and the bottom cover 3 are circular, there is no geometric interference between the shapes of the bottom cover 3 and the glass protrusion 11. However, even if the bottom cover 3 drives the upper cover 2 to rotate, the area of ​​the upper cover 2 covering the glass protrusion 11 does not actually change.

[0024] Two sets of pins 33 are asymmetrically arranged on the upper bottom surface 31 of the bottom cover 3. Both sets of pins 33 pass through the boss through hole 12 of the product 1 with an interference fit. The cylindrical surface of the pin 33 and a portion of the side of the boss through hole 12 are pressed together to achieve partial fixation, forming a mechanical limit to restrict radial displacement and prevent the upper cover 2 connected to the bottom cover 3 from rotating or shifting. The upper cover 2 is provided with positioning holes 23 corresponding to the positions of the pins 33, which pass through the through holes of the upper surface 21 and the lower surface 22. The pins 33 and positioning holes 23 correspond one-to-one. The pins 33 are installed by passing through the positioning holes 23. The fit between 23 is a transitional fit to achieve a detachable and fixed connection between the bottom cover 3 and the top cover 2; the fixing screw hole 24 of the top cover 2 and the screw hole 34 of the bottom cover 3 are used to lock the top cover 2 and the bottom cover 3. Since the fixing screw hole 24 and the screw hole 34 are connected by fasteners, the fixing screw hole 24 and the screw hole 34 are located in the boss through hole 12. Because it is necessary to strengthen the connection between the pin 33 and the positioning hole 23, the fixing screw hole 24 and the screw hole 34 are set between the two sets of positioning holes 23 and pins 33, and the distance between them is the same as that between each set of positioning holes 23 and pins 33.

[0025] like Figure 1 As shown, the upper cover 2 and the bottom cover 3 clamp the product 1. The upper cover 2 and the bottom cover 3 have no shape or size limitations; they are designed according to the specific glass protrusion 11. Because the upper cover 2 needs to cover the side of the glass protrusion 11 (the surface perpendicular to the upper surface 21) and the outer arc of the protrusion, the upper cover 2 needs to be slightly larger than the bottom cover 3. Figure 1In the embodiment shown, the upper cover 2, the glass protrusion 11 of the product 1, and the bottom cover 3 are square. Taking the bottom cover 3 as an example with a size of 29mm×29mm, the upper cover 2 has a size of 29.5mm×29.5mm. The difference in size is the thickness of the side of the glass protrusion 11 and the outer arc of the protrusion.

[0026] In this embodiment, as Figure 2 and 3 The bottom cover 3 has two sets of pins 33 asymmetrically spaced on its upper bottom surface 31. A screw hole 34 is provided at the perpendicular bisector of the connecting line between the two sets of pins 33 (the distance between the screw hole 34 and the two sets of pins 33 is the same). The screw hole 34 is a threaded through hole. The bottom cover edge 35 is chamfered at the connection with the upper bottom surface 31 and the lower bottom surface 32. At the same time, the top of the pin 33 is chamfered. The above two chamfers facilitate the disassembly and assembly of related components when the bottom cover 3 is installed on the concave surface of the glass boss 11. Taking the bottom cover 3 with a size of 29mm×29mm as an example, the diameter of the pin 33 is 4mm, the horizontal distance between the two pins 33 is 6mm, the vertical distance is 6mm, and the distance between the two pins 33 and the nearest center line is 3mm. The chamfer at the top of the pin 33 is 0.02mm, and the chamfer at the upper bottom surface 31 and the lower bottom surface 32 is 0.5mm.

[0027] In this embodiment, as Figure 4 and 5 The upper surface 21 of the upper cover 2 has a certain curvature to facilitate the disassembly of the upper cover 2. The lower surface 22 of the upper cover 2 is in close contact with the convex surface of the glass boss 11. Therefore, the lower surface 22 is designed according to the convex surface of the glass boss 11. The positioning hole 23 and fixing screw hole 24 of the upper cover 2 correspond to the pin 33 and screw hole 34 of the bottom cover 3. The fixing screw hole 24 is a threaded through hole.

[0028] In a preferred embodiment, when polishing product 1, the bottom cover 3 is first placed in the concave surface of the product boss 11, ensuring that its shape basically matches the concave surface. At this time, the bottom cover 3 is restricted by the shape of the concave surface and cannot rotate freely. The two sets of pins 33 of the bottom cover 3 pass through the boss through hole 12 and are partially exposed above the product boss 11. Then, the two positioning holes 23 of the top cover 2 are aligned with the pins 33 protruding from the bottom cover 3 and pressed vertically until fully fastened. This can restrict the top cover 2 from rotating or shifting during operation. Finally, the top cover 2 and the bottom cover 3 are locked and fixed by the screw holes 34 and the fixing screw holes 24 through the fasteners to achieve anti-rotation and anti-fall-off.

[0029] In this embodiment, the glass back cover polishing process is as follows: pre-process → glass boss clamping platform cover plate → upper sweeping and lower grinding (polishing glass back cover) → platform cover plate removal → post-process. The steps for clamping the platform cover plate are: first, position the bottom cover, then fasten the top cover, and finally insert screws to lock it.

[0030] In practical applications, it can also be used for multi-hole bosses. When using it, the shape of the upper bottom surface 31 of the bottom cover 3 and the lower surface 22 of the top cover 2 must be consistent with the concave and convex surfaces of the boss. Align the two sets of pins 33 of the bottom cover 3 with any one of the holes in the multi-hole boss, and then fasten the top cover 2 to achieve compatibility.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A platform protective cover for polishing mobile phone glass back covers, characterized in that: Includes an upper cover (2) and a bottom cover (3), with the product (1) sandwiched between the upper cover (2) and the bottom cover (3); The upper cover (2) includes two spaced through-hole positioning holes (23) and a fixing screw hole (24) between the two positioning holes (23); the lower cover (3) includes pins (33) arranged corresponding to the positioning holes (23) and screw holes (34) opened corresponding to the fixing screw holes (24); the upper bottom surface (31) of the lower cover (3) is in close contact with the concave surface of the glass boss (11) of the product (1), the upper cover (2) is in close contact with the convex surface of the glass boss (11), the two pins (33) pass through the boss through hole (12) and extend into the positioning hole (23), and fasteners are installed between the fixing screw hole (24) and the screw hole (34) for locking, and the upper cover (2) and the lower cover (3) have the same convex and concave shape as the glass boss (11).

2. The platform protective cover for polishing mobile phone glass back covers according to claim 1, characterized in that: The bottom cover (3) matches the concave shape of the glass boss (11), and the lower cover edge (35) of the bottom cover (3) is in close contact with the vertical side of the concave surface of the glass boss (11), thus restricting the rotation of the bottom cover (3).

3. A platform protective cover for polishing mobile phone glass back covers according to claim 1, characterized in that: The boss through hole (12) and the two pins (33) are interference fit, and the two pins (33) are respectively pressed against the side of the boss through hole (12).

4. A platform protective cover for polishing mobile phone glass back covers according to claim 2, characterized in that: The upper cover (2) is slightly larger than the bottom cover (3).

5. A platform protective cover for polishing mobile phone glass back covers according to claim 3, characterized in that: The upper surface (21) of the cover (2) is curved.

6. A platform protective cover for polishing mobile phone glass back covers according to claim 3, characterized in that: The pin (33) and the bottom cover (3) have chamfered edges on the lower cover side surface (35).

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