CN110035148A

CN110035148A - Devitrified glass cell phone rear cover

Info

Publication number: CN110035148A
Application number: CN201910227319.0A
Authority: CN
Inventors: 田刚; 刘枫; 熊兵; 何智安
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2019-07-19

Abstract

A kind of devitrified glass cell phone rear cover, including back shroud and the sidewall portion being bent to form from the back shroud periphery, the thickness of the sidewall portion is greater than the thickness of the back shroud；The application also provides a kind of mobile phone.

Description

Devitrified glass cell phone rear cover

Technical field

This application involves glassware and communication field, after espespecially a kind of hand devitrified glass mobile phone suitable for 5G terminal Lid.

Background technique

With increasingly approaching, the whole mobile phone appearance member industry change all great in generation of 5G communication.It is traditional at present Cell phone appearance part is mainly metal material, but metal material has shielding action to mobile phone signal, communicated with 5G between exist punching It is prominent, meanwhile, to the appearance of mobile phone appearance member, the requirements such as texture are also higher and higher in market, and glass and ceramic material are a series of at this Show one's talent under development trend.And glass phase has ceramic material that raw material sources are extensive, hardness is low, is easy at surface The advantages that reason, color is richer, has great market potential.

In traditional 3D glass cover-plate technique, hot bending is most important 3D prototyping method, due to being a kind of die molding method, It cannot produce excessively complicated 3D structure, as 3D glass back cover currently on the market be that thickness is uniform and radian less after Cover board.As shown in Figure 1, traditional glass appearance member 10 includes back shroud 11 and the sidewall portion 12 with 11 one of back shroud.After described Cover board 11 includes outerplanar 111 and inner plane 112, and the sidewall portion 12 includes extrados 121 and intrados 122.It is described outer flat Face 111 and the generally planar structure of intrados 112, the outerplanar 111 are a, the inner plane with 121 points of tangency of extrados 112 with the points of tangency of the intrados 122 be b.Because the sidewall portion 12 and the thickness of the back shroud 11 are almost the same, cause The distance of the points of tangency of its outer inner surface and appearance member thickness are similar, are unfavorable for discharging stress.

Summary of the invention

Release is concentrated to cause easily to solve external impacts stress in consideration of it, it is necessary to provide a kind of devitrified glass cell phone rear covers The risk of fracture.

In order to solve the above technical problems, this application provides a kind of devitrified glass cell phone rear cover, including back shroud and from institute The sidewall portion that back shroud periphery is bent to form is stated, the thickness of the sidewall portion is greater than the thickness of the back shroud.

Preferably, the sidewall portion is semilune structure, including intrados and extrados, semilune sidewall portion both ends Thickness be less than middle section thickness.

Preferably, the sidewall portion includes intrados and extrados, the intrados and the extrados not concentric.

Preferably, the back shroud includes outerplanar and inner plane, and the outerplanar is parallel to each other with inner plane.

Preferably, the outerplanar is tangent with extrados, and points of tangency is defined as a；The inner plane and the intrados phase It cuts, points of tangency is defined as b.

Preferably, the maximum gauge of the sidewall portion is about described two points of tangency a, the 1/3-2/ of wire length between b 3。

Preferably, the thickness of the back shroud is about described two points of tangency a, the 1/6-3/6 of wire length between b.

Preferably, the four corners of the sidewall portion of the devitrified glass cell phone rear cover further include corner, the corner Thickness is greater than the thickness of the sidewall portion.

In order to solve the above technical problems, present invention also provides a kind of mobile phone, including aforementioned devitrified glass rear cover.

The application devitrified glass cell phone rear cover is greater than the thickness of sidewall portion described by the thickness of the thickening sidewall portion The thickness of back shroud can make the cell phone rear cover bear bigger external impacts.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.

Fig. 1 is the sectional view of prior art glass back cover；

Fig. 2 is the perspective view of the application devitrified glass cell phone rear cover；

Fig. 3 is the cross-sectional view along A-A dotted line shown in Fig. 2；

Fig. 4 is the partial enlarged view of virtual coil shown in Fig. 2.

Specific embodiment

To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and Technical scheme is clearly and completely described in corresponding attached drawing.

Shown in please see Fig. 2 to Fig. 4, the application devitrified glass cell phone rear cover 20 includes back shroud 21 and from the back shroud The sidewall portion 22 that 21 peripheries are bent to form.

The thickness of the sidewall portion 22 is greater than the thickness of the back shroud 21, the corner 23 of 22 4 jiaos of the sidewall portion Thickness is greater than the thickness of the sidewall portion 22.

The sidewall portion 22 is in semilune structure, and the thickness of middle section is most thick, and the thickness at semilune both ends is compared with middle part Divide and narrows.

The back shroud 21 includes outerplanar 211 and inner plane 212, and the sidewall portion 22 includes extrados 221 and inner arc Face 222.

The outerplanar 211 and the generally planar structure of inner plane 212, the extrados 221 and intrados 222 are arc Shape face.The outerplanar 211 is defined as a, the inner plane 212 and the intrados 222 with the tangent point of the extrados 221 Tangent point is defined as b.Wire length between two points of tangency a, b is greater than the thickness of the sidewall portion 22, the sidewall portion 22 maximum gauge is about described two points of tangency a, the 1/3-2/3 of the wire length between b；The thickness of the back shroud 21 is about For described two points of tangency a, the 1/6-3/6 of the wire length between b；

Assuming that applying the effect of a power F to 21 center of back shroud, two size phases can be formed in the two sides wall portion 22 Deng support force F/2 effect (as shown in Figure 3).The sidewall portion 22 of arc-shaped curved surface can be by stress along extrados 221 and inner arc Face 222 is transmitted to point of contact a, the direction b, but in the actual processing process, and back shroud 21 can not be perfect with the cambered surface of sidewall portion 22 It is tangent, it will form atomic small step, stress will be concentrated at step, and inside and outside point of contact b in the prior art, a are nearly at together At one position, it will lead to inside and outside Stress superposition and be broken；But the application increases inside and outside point of contact b, the distance between a, makes interior External carbuncle relative distribution and bigger external impacts can be born.

The extrados 221 of the i.e. described sidewall portion 22 and the intrados 222 not concentric, make the outerplanar 211 and institute It states the point of contact b between the point of contact a and the inner plane 212 and the intrados 222 between extrados 221 and forms dislocation to disperse The release of stress.

Emphasis is as shown in fig.4, the thickness of the corner 23 of the devitrified glass cell phone rear cover 20 is maximum, according to rigidimeter Formula: P=EA is calculated, wherein P is tension and compression rigidity, and E is elasticity modulus, and A is cross-sectional area.When the thickness of the corner 23 is got over Greatly, the cross-sectional area A is bigger, and the tension and compression rigidity of the corner 23 is bigger, and the external impacts that can bear are stronger.

The application devitrified glass cell phone rear cover 20 keeps the thickness of sidewall portion 22 big by the thickness of the thickening sidewall portion 22 In the thickness of the back shroud 21, the cell phone rear cover 20 can be made to bear bigger external impacts.

The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal Replacement, improvement etc., should be included within the scope of the claims of this application.

Claims

1. a kind of devitrified glass cell phone rear cover, special including back shroud and the sidewall portion being bent to form from the back shroud periphery Sign is that the thickness of the sidewall portion is greater than the thickness of the back shroud.

2. devitrified glass cell phone rear cover as described in claim 1, which is characterized in that the sidewall portion is semilune structure, packet Intrados and extrados are included, the thickness at semilune sidewall portion both ends is less than the thickness of middle section.

3. devitrified glass cell phone rear cover as described in claim 1, which is characterized in that the sidewall portion includes intrados and outer arc Face, the intrados and the extrados not concentric.

4. devitrified glass cell phone rear cover as claimed in claim 3, which is characterized in that the back shroud includes that outerplanar is put down with interior Face, the outerplanar are parallel to each other with inner plane.

5. devitrified glass cell phone rear cover as claimed in claim 4, which is characterized in that the outerplanar and extrados are tangent, phase Point of contact is defined as a；The inner plane and the intrados are tangent, and points of tangency is defined as b.

6. devitrified glass cell phone rear cover as claimed in claim 5, which is characterized in that the maximum gauge of the sidewall portion is about institute State the 1/3-2/3 of wire length between two points of tangency a, b.

7. devitrified glass cell phone rear cover as claimed in claim 5, which is characterized in that the thickness of the back shroud is about described two The 1/6-3/6 of wire length between a points of tangency a, b.

8. devitrified glass cell phone rear cover as claimed in claim 7, which is characterized in that the side wall of the devitrified glass cell phone rear cover The four corners in portion further include corner, and the thickness of the corner is greater than the thickness of the sidewall portion.

9. a kind of mobile phone, which is characterized in that including the described in any item devitrified glass rear covers of such as claim 1-8.