CN219478000U - Electronic equipment and back lid thereof - Google Patents

Abstract

The utility model discloses an electronic device and a rear cover thereof. The rear cover of the electronic equipment comprises a ceramic fiber cover body, wherein the ceramic fiber cover body is provided with unidirectional ceramic fibers, and the thickness of the rear cover is more than or equal to 0.2 mm and less than or equal to 0.4 mm. The rear cover and the ceramic fiber cover body of the electronic equipment have the advantages of high rigidity, high strength, small thickness and the like.

Description

Electronic equipment and back lid thereof

Technical Field

The utility model relates to the field of electronic equipment, in particular to electronic equipment and a rear cover thereof.

Background

The rear cover of the electronic device is made of glass or polycarbonate (PC plastic), and the thickness of the rear cover of the electronic device is 0.67 mm-1.00 mm. The existing rear cover of the electronic equipment has the defects of larger thickness and adverse effect on the thinning of the electronic equipment.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, the utility model provides an electronic device and a rear cover thereof.

The rear cover of the electronic equipment comprises a ceramic fiber cover body, wherein the ceramic fiber cover body is provided with unidirectional ceramic fibers, and the thickness of the rear cover is more than or equal to 0.2 mm and less than or equal to 0.4 mm.

The rear cover of the electronic device can meet the requirements on rigidity and strength by making the thickness of the rear cover of the electronic device larger than or equal to 0.2 mm and smaller than or equal to 0.4 mm, and the thickness of the rear cover of the electronic device is far smaller than that of the rear cover in the related technology. Therefore, the rear cover of the electronic equipment has the advantages of high rigidity and strength and small thickness.

Optionally, the ceramic fiber cover body includes a plurality of ceramic fiber layers, and a plurality of the ceramic fiber layers are stacked along a thickness direction of the ceramic fiber cover body, and each of the ceramic fiber layers has unidirectional ceramic fibers.

Optionally, the included angle between the extending directions of the unidirectional ceramic fibers of two adjacent ceramic fiber layers is larger than 0 degree.

Optionally, the included angle between the extending directions of the unidirectional ceramic fibers of two adjacent ceramic fiber layers is greater than or equal to a preset value.

Optionally, an included angle between the extending directions of the unidirectional ceramic fibers of two adjacent ceramic fiber layers is greater than or equal to 30 degrees and less than or equal to 90 degrees.

Optionally, the ceramic fiber cover body includes a first ceramic fiber layer, a second ceramic fiber layer and a third ceramic fiber layer, the second ceramic fiber layer being located between the first ceramic fiber layer and the third ceramic fiber layer in a thickness direction of the ceramic fiber cover body, wherein the first ceramic fiber layer has first unidirectional ceramic fibers, the second ceramic fiber layer has second unidirectional ceramic fibers, and the third ceramic fiber layer has third unidirectional ceramic fibers.

Optionally, each of the first ceramic fiber layer, the second ceramic fiber layer, and the third ceramic fiber layer has a thickness of 0.08 millimeters or more and 0.12 millimeters or less.

Optionally, the extending direction of the first unidirectional ceramic fiber is consistent with the extending direction of the third unidirectional ceramic fiber, and an included angle between the extending direction of each of the first unidirectional ceramic fiber and the third unidirectional ceramic fiber and the extending direction of the second unidirectional ceramic fiber is 45 degrees or 90 degrees; or, an included angle between the extending direction of the first unidirectional ceramic fiber and the extending direction of the second unidirectional ceramic fiber is 30 degrees, an included angle between the extending direction of the second unidirectional ceramic fiber and the extending direction of the third unidirectional ceramic fiber is 30 degrees, and an included angle between the extending direction of the first unidirectional ceramic fiber and the extending direction of the third unidirectional ceramic fiber is 60 degrees.

Optionally, an end face of one of the first ceramic fiber layer and the third ceramic fiber layer, which is far away from the second ceramic fiber layer, is provided with a 3D texture; and/or the back cover further comprises a coating layer provided on an end face of one of the first ceramic fiber layer and the third ceramic fiber layer, which is remote from the second ceramic fiber layer.

Optionally, the thickness of the rear cover is 0.24 mm or more and 0.36 mm or less.

Optionally, the thickness of the rear cover is 0.27 mm or more and 0.32 mm or less.

The electronic device of the utility model comprises the back cover of the utility model.

The electronic equipment has the advantage of small thickness.

Optionally, the electronic device is a handheld electronic device.

Optionally, the electronic device is a mobile phone or a tablet computer.

Drawings

Fig. 1 is a schematic structural view of a rear cover of an electronic device according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a rear cover of an electronic device according to another embodiment of the present utility model.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 and 2, the rear cover 100 of the electronic device according to the embodiment of the present utility model includes a ceramic fiber cover body 1, the ceramic fiber cover body 1 has unidirectional ceramic fibers, and the thickness of the rear cover 100 is 0.2 mm or more and 0.4 mm or less.

The rear cover 100 and the ceramic fiber cover body 1 of the electronic equipment in the embodiment of the utility model use unidirectional ceramic fibers as reinforcements, and the modulus of the unidirectional ceramic fibers is as high as 370GPa, so that the rigidity and the strength of the rear cover 100 and the ceramic fiber cover body 1 of the electronic equipment can be greatly increased. The rigidity of the rear cover 100 of the electronic device of the embodiment of the present utility model is about at least twice as high as that of the rear cover in the related art with equal thickness.

The thickness of the back cover 100 of the electronic device according to the embodiment of the present utility model is 0.2 mm or more and 0.4 mm or less, so that the back cover 100 can meet the requirements for rigidity and strength, and the thickness of the back cover 100 of the electronic device according to the embodiment of the present utility model is much smaller than that of the back cover in the related art. Therefore, the rear cover 100 and the ceramic fiber cover body 1 of the electronic device according to the embodiment of the utility model have the advantages of high rigidity and strength, small thickness, and the like.

As shown in fig. 1 and 2, the rear cover 100 of the electronic device of the embodiment of the present utility model includes a ceramic fiber cover 1, the ceramic fiber cover 1 including a plurality of ceramic fiber layers 11, the plurality of ceramic fiber layers 11 being stacked in a thickness direction (as indicated by an arrow a in fig. 1 and 2) of the ceramic fiber cover 1 (rear cover 100). That is, the thickness direction of each ceramic fiber layer 11, the thickness direction of the ceramic fiber cover 1, and the thickness direction of the rear cover 100 coincide with each other. Each ceramic fiber layer 11 has unidirectional ceramic fibers. The unidirectional ceramic fibers may include alpha-Al ₂ O ₃ 。

By making the ceramic fiber cover 1 include a plurality of ceramic fiber layers 11, the thickness of the ceramic fiber cover 1 and the rear cover 100 can be changed by increasing and decreasing the number of the ceramic fiber layers 11, so that the thickness of the ceramic fiber cover 1 and the rear cover 100 can be easily and conveniently changed, and the rear cover 100 can be further adapted to various types and sizes of electronic devices, thereby effectively increasing the application range of the rear cover 100.

Optionally, the thickness of the rear cover 100 is 0.24 mm or more and 0.36 mm or less. It is thereby possible to further reduce the thickness of the rear cover 100 and the ceramic fiber cover 1 in the case where the rear cover 100 and the ceramic fiber cover 1 satisfy rigidity and strength requirements.

Optionally, the thickness of the rear cover 100 is 0.27 mm or more and 0.32 mm or less. It is thereby possible to further reduce the thickness of the rear cover 100 and the ceramic fiber cover 1 in the case where the rear cover 100 and the ceramic fiber cover 1 satisfy rigidity and strength requirements.

In one example of the present utility model, the included angle of the extending direction of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers 11 is greater than 0 degrees. In other words, the unidirectional ceramic fibers of the adjacent two ceramic fiber layers 11 differ in the extending direction. The unidirectional ceramic fiber has an extremely large modulus, but when it is used to manufacture the rear cover 100 of an electronic device, it may cause warpage of the edge of the rear cover 100, thereby making the flatness of the rear cover 100 undesirable, and increasing the defective rate of the rear cover 100.

Through intensive studies by the inventor of the present application, it was found that by making the rear cover 100 and the ceramic fiber cover body 1 include a plurality of ceramic fiber layers 11, and the included angle of the extension directions of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers 11 is greater than 0 degrees, the problem of edge warpage of the rear cover 100 can be effectively solved, and the flatness and the product yield of the rear cover 100 are greatly improved.

Optionally, the included angle between the extending directions of the unidirectional ceramic fibers of the two adjacent ceramic fiber layers 11 is greater than or equal to a preset value. Thus, the problem of edge warpage of the rear cover 100 can be more effectively solved, and the flatness and the product yield of the rear cover 100 can be further improved.

The included angle of the extending directions of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers 11 is more than or equal to 30 degrees and less than or equal to 90 degrees. Thus, the problem of edge warpage of the rear cover 100 can be more effectively solved, and the flatness and the product yield of the rear cover 100 can be further improved.

Further, the included angle of the extending directions of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers 11 is 45 degrees or more and 90 degrees or less. Thus, the problem of edge warpage of the rear cover 100 can be more effectively solved, and the flatness and the product yield of the rear cover 100 can be further improved. As will be understood by those skilled in the art, the included angle between the extending directions of the unidirectional ceramic fibers of two adjacent ceramic fiber layers 11 means: the smallest angle among the angles formed by the intersection of the extending directions of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers 11.

As shown in fig. 1 and 2, the ceramic fiber cover 1 includes a first ceramic fiber layer 11a, a second ceramic fiber layer 11b, and a third ceramic fiber layer 11c, the second ceramic fiber layer 11b being located between the first ceramic fiber layer 11a and the third ceramic fiber layer 11c in the thickness direction of the ceramic fiber cover 1. For example, the thickness direction of the ceramic fiber cover 1 coincides with the front-rear direction, the first ceramic fiber layer 11a is behind the second ceramic fiber layer 11b, and the second ceramic fiber layer 11b is behind the third ceramic fiber layer 11 c.

Wherein the first ceramic fiber layer 11a has first unidirectional ceramic fibers, the second ceramic fiber layer 11b has second unidirectional ceramic fibers, and the third ceramic fiber layer 11c has third unidirectional ceramic fibers. By making the ceramic fiber cover 1 include the first ceramic fiber layer 11a, the second ceramic fiber layer 11b, and the third ceramic fiber layer 11c, not only edge warpage of the rear cover 100 can be avoided, but also an excessive number of ceramic fiber layers 11 can be avoided, so that the structures of the rear cover 100 and the ceramic fiber cover 1 are simplified, and manufacturing difficulty and manufacturing cost of the rear cover 100 and the ceramic fiber cover 1 are reduced.

Alternatively, the thickness of each of the first ceramic fiber layer 11a, the second ceramic fiber layer 11b, and the third ceramic fiber layer 11c is 0.08 mm or more and 0.12 mm or less. This can reduce the difficulty in manufacturing the ceramic fiber layer 11, and can reduce the thickness of the rear cover 100 and the ceramic fiber cover body 1.

Further alternatively, each of the first ceramic fiber layer 11a, the second ceramic fiber layer 11b, and the third ceramic fiber layer 11c has a thickness of 0.09 mm or more and 0.10 mm or less. This can reduce the difficulty in manufacturing the ceramic fiber layer 11, and can reduce the thickness of the rear cover 100 and the ceramic fiber cover body 1.

In one example of the present utility model, the extending direction of the first unidirectional ceramic fiber is identical to the extending direction of the third unidirectional ceramic fiber, and the extending direction of each of the first unidirectional ceramic fiber and the third unidirectional ceramic fiber is at an angle of 45 degrees or 90 degrees to the extending direction of the second unidirectional ceramic fiber. Thus, the problem of edge warpage of the rear cover 100 can be more effectively solved, and the flatness and the product yield of the rear cover 100 can be further improved.

In another example of the present utility model, an angle between the extending direction of the first unidirectional ceramic fiber and the extending direction of the second unidirectional ceramic fiber is 30 degrees, an angle between the extending direction of the second unidirectional ceramic fiber and the extending direction of the third unidirectional ceramic fiber is 30 degrees, and an angle between the extending direction of the first unidirectional ceramic fiber and the extending direction of the third unidirectional ceramic fiber is 60 degrees. Thus, the problem of edge warpage of the rear cover 100 can be more effectively solved, and the flatness and the product yield of the rear cover 100 can be further improved.

As shown in fig. 2, an end surface of one of the first ceramic fiber layer 11a and the third ceramic fiber layer 11c, which is away from the second ceramic fiber layer 11b, is provided with a 3D texture 2. For example, the end surface of the one of the first ceramic fiber layer 11a and the third ceramic fiber layer 11c, which is away from the second ceramic fiber layer 11b, may constitute a rear end surface of the ceramic fiber cover 1. Thereby, the fiber texture of the unidirectional ceramic fibers of the ceramic fiber layer 11 can be effectively masked with the 3D texture 2, so that the rear cover 100 and the electronic device including the rear cover 100 can be more esthetically made.

The 3D texture 2 includes at least one of a line-type texture, a dot-type texture, and a regular geometric pattern texture (e.g., diamond, square, regular hexagon, etc.).

As shown in fig. 2, the rear cover 100 further includes a coating layer 3, the coating layer 3 being provided on an end surface of one of the first ceramic fiber layer 11a and the third ceramic fiber layer 11c remote from the second ceramic fiber layer 11 b. For example, the end surface of the one of the first ceramic fiber layer 11a and the third ceramic fiber layer 11c, which is away from the second ceramic fiber layer 11b, may constitute a rear end surface of the ceramic fiber cover 1. Thereby making the rear cover 100 and the electronic device including the rear cover 100 more attractive. Alternatively, the coating 3 may be a polyurethane coating.

It will be appreciated by those skilled in the art that when the end face of the one of the first ceramic fiber layer 11a and the third ceramic fiber layer 11c, which is remote from the second ceramic fiber layer 11b, is provided with the 3D texture 2, the coating 3 covers the 3D texture 2. For example, an end surface (rear end surface) of the first ceramic fiber layer 11a remote from the second ceramic fiber layer 11b is provided with the 3D texture 2 and is coated with the coating 3.

One method of manufacturing the rear cover 100 according to the embodiment of the present utility model is briefly described as follows. A plurality of ceramic fiber layers 11 (the ceramic fiber layers 11 include thermosetting resin) are stacked in the thickness direction of the ceramic fiber cover 1, and the plurality of ceramic fiber layers 11 are heated to about 180 degrees celsius and kept at 180 degrees celsius for about 30 minutes, and are press-molded under a pressure of 20MPa to 30 MPa. Wherein, during the press forming, the 3D texture 2 is molded on the corresponding end face of the ceramic fiber layer 11 by a mold. After the 3D texture 2 is molded, a coating 3 is sprayed on the corresponding end face of the ceramic fiber layer 11.

The back cover 100 of the present embodiment may also be manufactured by other methods, for example, bonding two adjacent ceramic fiber layers 11 together by an adhesive to obtain the ceramic fiber cover body 1, further forming the 3D texture 2 on the ceramic fiber cover body 1 and spraying to form the coating layer 3, so as to obtain the back cover 100.

The application also provides an electronic device. The electronic apparatus of the embodiment of the present utility model includes the rear cover 100 of the above-described embodiment of the present utility model. Therefore, the electronic equipment provided by the embodiment of the utility model has the advantages of small thickness and the like.

The electronic device of the embodiment of the utility model can be a handheld electronic device, such as a mobile phone or a tablet computer.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (14)

1. The rear cover of the electronic equipment is characterized by comprising a ceramic fiber cover body, wherein the ceramic fiber cover body is provided with unidirectional ceramic fibers, and the thickness of the rear cover is more than or equal to 0.2 mm and less than or equal to 0.4 mm.

2. The back cover of an electronic device according to claim 1, wherein the ceramic fiber cover body includes a plurality of ceramic fiber layers, the plurality of ceramic fiber layers being stacked in a thickness direction of the ceramic fiber cover body, each of the ceramic fiber layers having unidirectional ceramic fibers.

3. The back cover of an electronic device according to claim 2, wherein an included angle of an extending direction of the unidirectional ceramic fibers of two adjacent ceramic fiber layers is greater than 0 degrees.

4. A rear cover of an electronic device according to claim 3, wherein an included angle of extension directions of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers is equal to or larger than a preset value.

5. The back cover of the electronic device according to claim 4, wherein an included angle of an extending direction of the unidirectional ceramic fibers of the adjacent two ceramic fiber layers is 30 degrees or more and 90 degrees or less.

6. The back cover of an electronic device of any of claims 1-5, wherein the ceramic fiber cover comprises a first ceramic fiber layer, a second ceramic fiber layer, and a third ceramic fiber layer, the second ceramic fiber layer being located between the first ceramic fiber layer and the third ceramic fiber layer in a thickness direction of the ceramic fiber cover, wherein the first ceramic fiber layer has first unidirectional ceramic fibers, the second ceramic fiber layer has second unidirectional ceramic fibers, and the third ceramic fiber layer has third unidirectional ceramic fibers.

7. The back cover of the electronic device of claim 6, wherein each of the first ceramic fiber layer, the second ceramic fiber layer, and the third ceramic fiber layer has a thickness of 0.08 millimeters or more and 0.12 millimeters or less.

8. The back cover of the electronic device of claim 6, wherein the back cover is configured to cover the electronic device,

the extending direction of the first unidirectional ceramic fiber is consistent with the extending direction of the third unidirectional ceramic fiber, and an included angle between the extending direction of each of the first unidirectional ceramic fiber and the third unidirectional ceramic fiber and the extending direction of the second unidirectional ceramic fiber is 45 degrees or 90 degrees;

or, an included angle between the extending direction of the first unidirectional ceramic fiber and the extending direction of the second unidirectional ceramic fiber is 30 degrees, an included angle between the extending direction of the second unidirectional ceramic fiber and the extending direction of the third unidirectional ceramic fiber is 30 degrees, and an included angle between the extending direction of the first unidirectional ceramic fiber and the extending direction of the third unidirectional ceramic fiber is 60 degrees.

9. The back cover of the electronic device of claim 6, wherein the back cover is configured to cover the electronic device,

an end face of one of the first ceramic fiber layer and the third ceramic fiber layer, which is far away from the second ceramic fiber layer, is provided with a 3D texture; and/or

The back cover further includes a coating layer provided on an end face of one of the first ceramic fiber layer and the third ceramic fiber layer remote from the second ceramic fiber layer.

10. The back cover of an electronic device of claim 1, wherein a thickness of the back cover is 0.24 mm or more and 0.36 mm or less.

11. The back cover of an electronic device of claim 10, wherein the thickness of the back cover is 0.27 mm or more and 0.32 mm or less.

12. An electronic device comprising a back cover of an electronic device according to any one of claims 1-11.

13. The electronic device of claim 12, wherein the electronic device is a handheld electronic device.

14. The electronic device of claim 13, wherein the electronic device is a cell phone or a tablet computer.