Mobile phone front shell structure and mobile phone

Abstract

The utility model provides a mobile phone front shell structure and a mobile phone. The mobile phone front shell structure comprises a metal shell plate and a plastic part wrapping the peripheral edge of the metal shell plate through injection molding, a plurality of first tooth grooves are formed in the positions, located at the two ends, of the front face of the metal shell plate at intervals, a plurality of second tooth grooves are formed in the positions, located at the two ends, of the back face of the metal shell plate at intervals, and the first tooth grooves and the second tooth grooves are arranged in a staggered mode. The plastic part forms a first tooth block embedded into each first tooth groove and a second tooth block embedded into each second tooth groove through injection molding. According to the utility model, through the combination mode of the metal shell plate and the plastic part, higher stability and reliability are realized, the overall strength and appearance effect of the product are improved, and meanwhile, the use stability of the product can be effectively improved through the matching structure of the tooth groove and the tooth block between the metal shell plate and the plastic part, so that the service life of the product is prolonged. And a more reliable and durable shell structure is provided for the mobile phone.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mobile phone shell structure, concretely to a mobile phone front shell structure and mobile phone. BACKGROUND

[0002] In the design of the intelligent mobile phone shell, the front shell is a key structural member for supporting the screen and internal components, and needs to meet multiple requirements such as mechanical strength, aesthetic coordination and signal compatibility. The current industry generally adopts a single material scheme or a primary composite structure, but both have significant defects. For a full-plastic front shell, although its injection molding process is simple, the cost is low, and it has no shielding effect on the antenna signal, the problem of weak mechanical performance is increasingly prominent in terminal applications: for example, the rupture probability of the frame area of polycarbonate (PC) material is as high as more than 30% in the 1.5-meter standard drop test, which directly leads to the increase of screen damage rate. If the front shell is replaced by a metal material (such as aluminum alloy) as a whole, the impact resistance can be significantly improved, but it will cause new contradictions: on the one hand, there are essential differences in surface treatment process between metal and plastic material of the middle frame, such as color difference and texture of metal anodic oxidation layer and plastic spraying layer, which makes the transition area of the front shell and the middle frame visually fragmented; on the other hand, the electromagnetic shielding effect of the metal will seriously interfere with the antenna performance, especially in the 5G millimeter wave frequency band, complex signal breakpoint design or increasing the antenna clearance area is needed to compensate for the performance loss, which greatly increases the structural complexity and production cost.

[0003] To alleviate the above contradictions, the prior art attempts to use a composite material scheme, but its implementation path still has limitations. For example, some designs combine the metal frame and the glass panel through an adhesive process, but the difference in the thermal expansion coefficient between the metal and the glass is easy to produce interface gaps after long-term cold and hot cycles, and even cause the aging and cracking of the adhesive layer. UTILITY MODEL CONTENTS

[0004] The utility model discloses a mobile phone front shell structure and mobile phone to solve the technical problems in the prior art.

[0005] The utility model discloses the technical scheme that adopts is:

[0006] The utility model discloses a mobile phone front shell structure, which comprises a metal shell plate and a plastic part wrapped around the edges of the metal shell plate by injection molding; a plurality of first tooth grooves are arranged at intervals on the front surface of the metal shell plate between the two end portions, a plurality of second tooth grooves are arranged at intervals on the back surface of the metal shell plate between the two end portions, and the plurality of first tooth grooves and the plurality of second tooth grooves are arranged in a staggered manner; the plastic part is formed by injection molding to form a first tooth block embedded in each first tooth groove and a second tooth block embedded in each second tooth groove.

[0007] Specifically, the first tooth slot and the second tooth slot are projected on the front or back of the metal shell plate as a trapezoid, and the trapezoid is located on the upper base of the end face of the metal shell plate.

[0008] Further, the metal shell plate is provided with a plurality of first clamping grooves at the two side surfaces, and a rib groove connected between adjacent two first clamping grooves, the plastic part is formed by injection molding to embed a first clamping block in each first clamping groove and a rib in each rib groove.

[0009] Further, the front of the metal shell plate is provided with a third clamping tooth protruding upward at the position of the two side edges, and the inner edges of the two sides of the plastic part form a row of third clamping grooves corresponding to the third clamping teeth.

[0010] The utility model also provides a mobile phone which comprises the mobile phone front shell structure.

[0011] Compared with the prior art, the utility model has high stability and reliability through the combination of the metal shell plate and the plastic part, improves the overall strength and appearance effect of the product, and meanwhile, the tooth slot and tooth block cooperation structure between the metal shell plate and the plastic part can effectively improve the use stability of the product, and provide a more reliable and durable shell structure for the mobile phone. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0013] Fig. 1 It is a three-dimensional structure schematic view of the embodiment of the utility model;

[0014] Fig. 2 It is an exploded schematic view of the metal shell plate and the plastic part in the embodiment of the utility model;

[0015] Fig. 3 It is Fig. 2 It is an enlarged view of A in the figure;

[0016] Fig. 4 It is Fig. 2 It is an enlarged view of B in the figure;

[0017] 1, metal shell plate;

[0018] 11, first tooth slot; 12, second tooth slot; 13, third clamping tooth; 14, first clamping groove; 15, rib groove;

[0019] 2. plastic part;

[0020] 21. first tooth block; 22. second tooth block; 23. third clamping slot; 24. first clamping block; 25. rib. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects of the present application more clear, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0022] The principles and structures of the present application will be described in detail below in combination with the drawings and examples.

[0023] For the all-plastic front shell, although its injection molding process is simple, low in cost and has no shielding effect on the antenna signal, the problem of weak mechanical properties is increasingly prominent in terminal applications: for example, the breakage probability of the frame area of polycarbonate (PC) material is as high as more than 30% in 1.5-meter standard drop test, directly leading to the increase of screen damage rate. If the front shell is replaced as a whole by metal material (such as aluminum alloy), although the impact resistance can be significantly improved, it will cause new contradictions: on the one hand, there are essential differences in surface treatment process between metal and plastic material of the middle frame, such as color difference and texture of metal anodic oxidation layer and plastic spraying layer, which are difficult to match, resulting in visual fragmentation in the transition area of the front shell and the middle frame.

[0024] For this purpose, as Figs. 1 to 4The utility model provides a kind of mobile phone front shell structure, mobile phone front shell structure includes: metal shell plate 1 and the plastic piece 2 of being wrapped in the four peripheral edges of metal shell plate 1 by injection molding.The front of metal shell plate 1 is located the position interval of two end portions and is equipped with multiple first tooth grooves 11, back is located the position interval of two end portions and is equipped with multiple second tooth grooves 12, and first tooth groove 11 and second tooth groove 12 are misaligned arrangement.Plastic piece 2 is formed by injection molding and is embedded in each first tooth groove 11 The first tooth block 21 of first tooth groove 11 and the second tooth block 22 of second tooth groove 12 embedded in each second tooth groove 12.Metal shell plate 1 is the main support structure of mobile phone front shell, and the end position interval distribution of its front and back two surfaces is multiple first tooth grooves 11 and second tooth grooves 12, and first tooth groove 11 and second tooth groove 12 adopt misaligned arrangement mode, avoid the problem that the overall strength is insufficient possibly caused by the symmetry of structure.Plastic piece 2 is wrapped in the four peripheral edges of metal shell plate 1 by injection molding technology, further enhances the overall rigidity and durability of front shell.In injection molding process, the first tooth block 21 of plastic piece 2 and the second tooth block 22 are embedded in first tooth groove 11 and second tooth groove 12 respectively, form a kind of reliable mechanical locking structure.Not only can effectively improve the bending resistance of mobile phone front shell, but also can reduce the risk of loosening between plastic piece 2 and metal shell plate 1, ensure the stability and service life of front shell structure.

[0025] By this structure design, mobile phone front shell can not only provide higher strength and durability, but also meet the aesthetic design requirements of different styles and functional requirements, greatly improve the user experience.

[0026] Preferably, in order to further optimize the structural strength of mobile phone front shell, the number, spacing and depth of first tooth groove 11 and second tooth groove 12 of the end of the front and back of metal shell plate 1 can be designed according to specific requirements, and in actual application, the material selection of metal shell plate 1 and the injection molding process of plastic piece 2 can be optimized according to specific requirements.

[0027] In specific embodiments, the front and back of metal shell plate 1 are respectively provided with multiple first tooth grooves 11 and second tooth grooves 12, and first tooth groove 11 and second tooth groove 12 are misaligned in space. First tooth groove 11 and second tooth groove 12 project trapezoidal on the front or back of metal shell plate 1, and the upper base of the trapezoid is located at the end face position of metal shell plate 1. The upper base of the trapezoidal tooth groove is located at the end face position of metal shell plate 1, which is a short side, and the lower base is located at the inner side of the tooth groove, which is a long side. That is, the opening of the tooth groove is smaller at the end face position of metal shell plate 1, and gradually widens inward. After the plastic piece 2 formed by injection molding is filled into the tooth groove, it is not easy to come out, thereby improving the reliability and tightness of the connection.

[0028] In specific embodiments, the two side surfaces of the metal shell plate 1 are designed with an inner recess, and a plurality of first clamping grooves 14 are arranged on the two side surfaces, and a rib groove 15 is formed between any two adjacent first clamping grooves 14. The plastic part 2 is formed with a first clamping block 24 and a rib 25 by an injection molding process, which are respectively embedded in the first clamping groove 14 and the rib groove 15, so as to realize the reliable combination between the metal shell plate 1 and the plastic part 2. During the injection molding process, the first clamping block 24 and the rib 25 of the plastic part 2 can be accurately embedded in the first clamping groove 14 and the rib groove 15 of the metal shell plate 1, forming a stable mechanical locking structure. Not only can the bending resistance of the front shell of the mobile phone be effectively improved, but also the risk of loosening between the plastic part and the metal shell plate can be reduced, so as to ensure the stability and service life of the front shell structure.

[0029] In further embodiments, the front surface of the metal shell plate 1 is provided with a third clamping tooth 13 protruding upward at a position between the two side edges, and the two inner edges of the plastic part 2 are provided with a row of third clamping grooves 23 corresponding to the third clamping tooth 13. That is, a plurality of hierarchical locking structures are formed between the metal shell plate 1 and the plastic part 2, further improving the overall strength and bending resistance of the front shell.

[0030] In actual application, the number, spacing and shape of the third clamping tooth 13 on the metal shell plate 1 can be designed according to specific requirements. For example, by adjusting the arrangement of the clamping tooth and the clamping groove, the structural performance of the front shell can be further optimized to meet the aesthetic design requirements of different styles and functional requirements. At the same time, this multi-level clamping design can effectively improve the user experience, making the front shell of the mobile phone more stable and durable in use.

[0031] The utility model also proposes a kind of mobile phone, including the front shell structure of above, in addition to this, the shell structure of mobile phone also includes the shell structure of prior art such as middle frame, back shell, not the emphasis of this application, not specifically elaborate.

[0032] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the utility model. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they refer to the presence of a feature, step, operation, device, component and / or combination thereof.

[0033] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mobile phone front cover structure, characterized in that, include: The metal shell plate and the plastic parts wrapped around the perimeter of the metal shell plate by injection molding; the front of the metal shell plate is provided with a plurality of first tooth grooves at intervals at both ends, and the back is provided with a plurality of second tooth grooves at intervals at both ends, and the plurality of first tooth grooves and the plurality of second tooth grooves are staggered; the plastic parts are formed by injection molding into a first tooth block embedded in each first tooth groove and a second tooth block embedded in each second tooth groove.

2. The mobile phone front shell structure as described in claim 1, characterized in that, The first tooth groove and the second tooth groove are projected onto the front or back of the metal shell plate in a trapezoidal shape, and the upper base of the trapezoid is located at the end face of the metal shell plate.

3. The mobile phone front shell structure as described in claim 1, characterized in that, The metal shell plate has multiple first slots spaced apart on both sides, and rib grooves connecting two adjacent first slots. The plastic part is formed by injection molding into a first block embedded in each first slot, and a rib embedded in each rib groove.

4. The mobile phone front shell structure as described in claim 1, characterized in that, The front of the metal shell plate is provided with upwardly protruding third teeth at intervals on both sides of its edge, and the inner edges on both sides of the plastic part form a row of third grooves corresponding to the third teeth.

5. A mobile phone, characterized in that, Includes the mobile phone front shell structure as described in any one of claims 1 to 4.

Images