CN210534629U - Magnesium alloy notebook bottom cover capable of preventing surface shrinkage gravure - Google Patents

Abstract

The utility model discloses a prevent magnesium alloy notebook bottom of surface shrinkage gravure, the curb plate that is isosceles trapezoid and a plurality of erection column of arranging at the dull and stereotyped interval each other of rectangle including the dull and stereotyped, the dull and stereotyped four sides of distribution rectangle. All the side plates incline upwards outwards relative to the rectangular flat plate, the adjacent two side plates are spliced end to end, an assembly hole is formed in the center of the assembly column, the difference between the thickness of the assembly column and the thickness of the rectangular flat plate is 0.75 mm, a circle of transition ring is arranged on the periphery of the assembly column, the root of the assembly column and the rectangular flat plate form an integrated structure together, the transition ring further comprises an outer inclined ring, a middle platform ring and an inner inclined ring in sequence along the direction close to the center line of the assembly column, and the inclination angle of the outer inclined ring relative to the rectangular flat plate is smaller than that of the inner inclined ring relative to the rectangular flat plate. The utility model discloses make the rectangle dull and stereotyped and meet gently with the help of the transition ring with the assembly post both, reduce the heat dissipation inequality, avoid producing the shrink gravure on the position surface that meets effectively.

Description

Magnesium alloy notebook bottom cover capable of preventing surface shrinkage gravure

Technical Field

The utility model relates to a metal die-casting product especially relates to a prevent magnesium alloy notebook bottom of surface shrinkage gravure.

Background

With the rapid development of information technology, the updating speed of electronic products is faster and faster. The traditional plastic notebook shell can not meet the requirements of people on portability, light weight and good heat dissipation of the notebook. It is considered to adopt a substitute which is more lightweight and has better heat dissipation performance.

Among the numerous light metals, magnesium alloys have unparalleled light weight characteristics. With the continuous development of die casting technology, people can complete the die casting forming of thin-wall parts.

However, the thin-wall part with high appearance requirement like the bottom cover of the notebook computer has a plurality of problems, and the surface shrinkage gravure is one of the difficulties in the production of the thin-wall die casting. Meanwhile, people now pursue not only performance configuration of notebooks but also exquisite and beautiful appearance. The bottom cover of a common notebook computer is sprayed with high-brightness paint, which puts strict requirements on spraying substrates. When the thin-wall part is produced by die casting, a lot of surface shrinkage gravure can appear, the severe gravure can increase the polishing workload of a substrate and can also cause polishing deformation and scrapping, and therefore the qualification rate of products is reduced.

Therefore, there is a need for a magnesium alloy notebook bottom cover capable of preventing surface shrinkage gravure to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent magnesium alloy notebook bottom of surface shrinkage gravure can reduce the heat dissipation inequality, avoids producing the shrinkage gravure on the position surface that meets effectively, has reduced the subsequent handling cost of polishing and has improved the qualification rate.

In order to achieve the above purpose, the technical scheme of the utility model is that: the magnesium alloy notebook bottom cover comprises a rectangular flat plate, isosceles trapezoid side plates distributed on four sides of the rectangular flat plate, and a plurality of assembling columns arranged on the rectangular flat plate at intervals. All the side plates incline upwards outwards relative to the rectangular flat plate, every two adjacent side plates are spliced end to end, an assembly hole is formed in the center of the assembly column, the difference between the thickness of the assembly column and the thickness of the rectangular flat plate is 0.75 mm, a circle of transition ring is arranged on the periphery of the assembly column, the transition ring, the root of the assembly column and the rectangular flat plate form an integrated structure together, the transition ring sequentially comprises an outer inclined ring, a middle platform ring and an inner inclined ring along the direction close to the center line of the assembly column, and the inclination angle of the outer inclined ring relative to the rectangular flat plate is smaller than the inclination angle of the inner inclined ring relative to the rectangular flat plate.

Preferably, the intermediate platform ring has a thickness of 0.25 mm.

Preferably, the thickness of the rectangular flat plate is 0.75 mm, and the thickness of the assembling column is 1.5 mm.

Preferably, the assembling column is a cylinder, and the assembling hole is a circular counter bore.

Preferably, the top surfaces of all the side plates are respectively provided with a positioning structure matched with an external matching component.

Preferably, the positioning structures of all the side plates are arranged along the circumference of the rectangular flat plate and are arranged in a circle together.

Preferably, two adjacent side plates are respectively provided with a notch.

Preferably, the notch is a rectangular notch.

Compared with the prior art, because the periphery of the assembly column is provided with a circle of transition ring, the root of the assembly column and the rectangular flat plate form an integrated structure together, the transition ring sequentially comprises an outer inclined ring, a middle platform ring and an inner inclined ring along the direction close to the center line of the assembly column, the inclination angle of the outer inclined ring relative to the rectangular flat plate is smaller than that of the inner inclined ring relative to the rectangular flat plate, so that the rectangular flat plate and the assembly column are smoothly connected under the arrangement of the outer inclined ring, the middle platform ring and the inner inclined ring, uneven heat dissipation is reduced, the generation of shrinkage gravure on the surface of the connected position is effectively avoided, the polishing cost of the subsequent process is reduced, and the product percent of pass is improved.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the magnesium alloy notebook bottom cover for preventing surface shrinkage gravure of the present invention.

Fig. 2 is a schematic plan view of the bottom cover of the magnesium alloy notebook shown in fig. 1, which is used for preventing surface shrinkage gravure, in a top view.

Fig. 3 is a schematic view of the internal structure of fig. 2 taken along the line a-a.

Fig. 4 is a further enlarged view of portion B of fig. 3.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout.

Referring to fig. 1 to 4, a magnesium alloynotebook bottom cover 100 for preventing surface shrinkage gravure according to the present invention includes arectangular plate 10,side plates 20 disposed on four sides of therectangular plate 10 and having an isosceles trapezoid shape, and a plurality ofmounting posts 30 spaced apart from each other on therectangular plate 10. All theside plates 20 are inclined upwards and outwards relative to the rectangularflat plate 10, and the state is shown in fig. 3, so that when the rectangularflat plate 10 is placed on a platform, an avoiding space is formed between theside plates 20 and the platform; the adjacent twoside plates 20 are spliced end to end, so that all theside plates 20 form a rectangular ring. The center of the assemblingcolumn 30 is provided with an assemblinghole 31, and the difference between the thickness P1 of the assemblingcolumn 31 and the thickness P3 of the rectangularflat plate 10 is 0.75 mm; for example, the thickness P3 of therectangular plate 10 is 0.75 mm, and the thickness P1 of themounting post 30 is 1.5 mm, so as to ensure that the magnesium alloynotebook bottom cover 100 of the present invention has sufficient strength, but is not limited thereto. A circle oftransition ring 40 is arranged on the periphery of the assemblingcolumn 30, and thetransition ring 40, the root of the assemblingcolumn 30 and the rectangularflat plate 10 form an integral structure together so as to improve the bonding strength of the three; thetransition ring 40 further comprises an outerinclined ring 41, amiddle platform ring 42 and an innerinclined ring 43 in sequence along the direction close to the center line of theassembly column 30, the inclined angle of the outerinclined ring 41 relative to the rectangularflat plate 10 is smaller than the inclined angle of the innerinclined ring 43 relative to the rectangularflat plate 10, and the state is shown in fig. 4, so that the connection positions of the rectangularflat plate 10 and theassembly column 30 are connected more gradually, uneven heat dissipation is reduced more effectively, and the generation of shrink gravure on the surface of the connection positions is avoided more effectively; for example, the thickness P2 of themiddle platform ring 42 is 0.25 mm, themounting post 30 is a cylinder, and themounting hole 31 is a circular counter bore, so as to maximize the smooth contact between therectangular plate 10 and themounting post 30. More specifically, the following:

as shown in fig. 1 and fig. 2, the top surfaces of all theside plates 20 are respectively provided with apositioning structure 50 which is matched with an external matching component (e.g. a top cover of a pen house book), preferably, thepositioning structures 50 of all theside plates 20 are arranged along the circumference of the rectangularflat plate 10 and are arranged together to form a circle, so as to increase the operational convenience of mutually and rapidly positioning and covering the external matching component and the magnesium alloynotebook bottom cover 100 of the present invention; specifically, adjacent bothsides board 20 respectively is seted up jaggedly 60, and it is more preferable that jagged 60 is the rectangle breach to provide the space of dodging, thereby be convenient for the utility model discloses an assembly of magnesiumalloy notebook bottom 100 and external component, but not so as the limit.

Compared with the prior art, the periphery of the assemblingcolumn 30 is provided with a circle oftransition ring 40, the root of the assemblingcolumn 30 and the rectangularflat plate 10 form an integral structure together, thetransition ring 40 further comprises an outerinclined ring 41, amiddle platform ring 42 and an innerinclined ring 43 in sequence along the direction close to the center line of the assemblingcolumn 30, the inclination angle of the outerinclined ring 41 relative to the rectangularflat plate 10 is smaller than that of the innerinclined ring 43 relative to the rectangularflat plate 10, so that under the arrangement of the outerinclined ring 41, themiddle platform ring 42 and the innerinclined ring 43, the rectangularflat plate 10 and the assemblingcolumn 30 are smoothly connected, uneven heat dissipation is reduced, the surface of the connected position is effectively prevented from generating shrinkage gravure, the polishing cost of subsequent processes is reduced, and the product percent of pass is improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (8)

Translated fromChinese

1.一种防表面收缩凹印的镁合金笔记本底盖，包括矩形平板、分布于所述矩形平板之四边的呈等腰梯形的侧板及多个在所述矩形平板彼此间隔开布置的装配柱，所有所述侧板相对所述矩形平板向外上方倾斜，相邻两所述侧板之间首尾拼接，所述装配柱的中心开设有装配孔，所述装配柱的厚度与所述矩形平板的厚度之差为0.75毫米，其特征在于，所述装配柱的周边设有一圈的过渡环，所述过渡环、装配柱的根部及矩形平板三者共同构成一体结构，所述过渡环还沿靠近所述装配柱之中心线方向依次包含外倾斜环、中间平台环及内倾斜环，所述外倾斜环相对所述矩形平板的倾斜角度小于所述内倾斜环相对所述矩形平板的倾斜角度。1. A magnesium alloy notebook bottom cover for preventing surface shrinkage and gravure, comprising a rectangular flat plate, an isosceles trapezoidal side plate distributed on four sides of the rectangular flat plate, and a plurality of assemblies that are spaced apart from each other on the rectangular flat plate All the side plates are inclined outward and upward relative to the rectangular plate, and the two adjacent side plates are spliced end-to-end, an assembly hole is opened in the center of the assembly column, and the thickness of the assembly column is the same as that of the rectangular plate. The difference between the thicknesses of the plates is 0.75 mm. It is characterized in that a transition ring is arranged around the periphery of the assembly column. The transition ring, the root of the assembly column and the rectangular plate form an integral structure. Along the direction close to the centerline of the assembly column, an outer inclined ring, a middle platform ring and an inner inclined ring are sequentially included, and the inclination angle of the outer inclined ring relative to the rectangular plate is smaller than the inclination of the inner inclined ring relative to the rectangular plate. angle.2.根据权利要求1所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，所述中间平台环的厚度为0.25毫米。2 . The magnesium alloy notebook bottom cover for preventing surface shrinkage and gravure according to claim 1 , wherein the thickness of the middle platform ring is 0.25 mm. 3 .3.根据权利要求1所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，所述矩形平板的厚度为0.75毫米，所述装配柱的厚度为1.5毫米。3 . The magnesium alloy notebook bottom cover for preventing surface shrinkage and gravure according to claim 1 , wherein the thickness of the rectangular flat plate is 0.75 mm, and the thickness of the assembly post is 1.5 mm. 4 .4.根据权利要求1所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，所述装配柱为圆柱，所述装配孔为圆形沉孔。4 . The magnesium alloy notebook bottom cover for preventing surface shrinkage and gravure according to claim 1 , wherein the assembly column is a cylinder, and the assembly hole is a circular counterbore. 5 .5.根据权利要求1所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，所有所述侧板的顶面各设有与外界配合构件配合的定位结构。5 . The magnesium alloy notebook bottom cover for preventing surface shrinkage and gravure according to claim 1 , wherein the top surfaces of all the side plates are each provided with a positioning structure that cooperates with an external matching member. 6 .6.根据权利要求5所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，所有所述侧板的定位结构沿所述矩形平板的周向布置并共同排列成一圈。6 . The gravure-proof magnesium alloy notebook bottom cover according to claim 5 , wherein the positioning structures of all the side plates are arranged along the circumferential direction of the rectangular flat plate and are arranged in a circle together. 7 .7.根据权利要求1所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，相邻两所述侧板各开设有缺口。7 . The magnesium alloy notebook bottom cover for preventing surface shrinkage and gravure according to claim 1 , wherein each of the two adjacent side plates is provided with a gap. 8 .8.根据权利要求7所述的防表面收缩凹印的镁合金笔记本底盖，其特征在于，所述缺口为矩形缺口。8 . The gravure-proof magnesium alloy notebook bottom cover according to claim 7 , wherein the notch is a rectangular notch. 9 .

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