CN107071100B

CN107071100B - Shell assembly and mobile terminal

Info

Publication number: CN107071100B
Application number: CN201710132557.4A
Authority: CN
Inventors: 冉可
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-03-07
Filing date: 2017-03-07
Publication date: 2020-01-14
Anticipated expiration: 2037-03-07
Also published as: CN107071100A

Abstract

The embodiment of the invention discloses a shell assembly and a mobile terminal, wherein the shell assembly comprises a first shell and a second shell fixed on the first shell, the first shell is provided with a positioning hole, the second shell is provided with a positioning block matched with the positioning hole, a deformation bulge is arranged on the periphery of the positioning block, the deformation bulge is extruded by the inner side wall of the positioning hole to generate deformation, and tightly abuts against the inner side wall of the positioning hole so as to be matched with a tolerance gap between the positioning block and the positioning hole. According to the shell assembly and the mobile terminal, the deformation protrusions are arranged on the periphery of the positioning block and are tightly abutted against the inner side wall of the positioning hole, and the deformation protrusions are extruded by the inner side wall of the positioning hole to deform so as to adapt to a tolerance gap between the positioning block and the positioning hole, so that a reasonable matching gap between the first cover plate and the second cover plate is ensured, and the appearance performance of the shell assembly is improved.

Description

Shell assembly and mobile terminal

Technical Field

The invention relates to the field of electronic equipment, in particular to a shell assembly and a mobile terminal.

Background

In the assembly scheme of present mobile terminal casing subassembly, all be the syllogic structure usually, including the second casing and cooperate two first casings in second casing both sides side by side, the second casing is fixed at the center through the point gluing, and first casing passes through the locating piece to be fixed with the cooperation of center locating hole to fasten through the double faced adhesive tape. However, conventionally, since manufacturing tolerances of the first housing and the second housing and positioning tolerances of the second housing dispensing process exist, the manufacturing tolerances and the positioning tolerances are accumulated. Therefore, the situation that the fit clearance is too large or the fit clearance is unreasonable such as interference fit between the first shell and the second shell easily occurs between the first shell and the second shell, the appearance of the shell assembly is affected, and even the shell assembly bulges.

Disclosure of Invention

In order to solve the technical problems, the invention provides a shell assembly and a mobile terminal, which can improve appearance performance.

The invention provides a shell assembly which comprises a first shell and a second shell fixed on the first shell, wherein the first shell is provided with a positioning hole, the second shell is provided with a positioning block matched with the positioning hole, deformation bulges are arranged on the periphery of the positioning block, and are deformed by being extruded by the inner side wall of the positioning hole and tightly abut against the inner side wall of the positioning hole so as to be matched with a tolerance gap between the positioning block and the positioning hole.

The invention also provides a mobile terminal which comprises the shell assembly.

According to the shell assembly and the mobile terminal, the deformation protrusions are arranged on the periphery of the positioning block and are tightly abutted against the inner side wall of the positioning hole, and the deformation protrusions are extruded by the inner side wall of the positioning hole to deform so as to adapt to a tolerance gap between the positioning block and the positioning hole, so that a reasonable matching gap between the first cover plate and the second cover plate is ensured, and the appearance performance of the shell assembly is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a first embodiment of a housing assembly according to the present invention;

FIG. 2 is a schematic cross-sectional view of a mobile terminal of the present invention;

FIG. 3 is a schematic structural diagram of a first embodiment of a deformable projection of the present invention;

FIG. 4 is a schematic structural diagram of a second embodiment of a deformable bump in accordance with the present invention;

FIG. 5 is a cross-sectional schematic view of the assembly of the housing assembly of the present invention;

FIG. 6 is an enlarged partial schematic view of FIG. 5;

FIG. 7 is a schematic view of the assembled housing assembly of the present invention;

FIG. 8 is an enlarged partial schematic view of FIG. 7;

fig. 9 is a schematic structural diagram of a second embodiment of the housing assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a housing assembly 100, where the housing assembly 100 includes a first housing 10 and a second housing 20 fixed to the first housing 10, the first housing 10 has a positioning hole 11, the second housing 20 has a positioning block 21 matching with the positioning hole 11, a deformation protrusion 30 is disposed on a peripheral side of the positioning block 21, and the deformation protrusion 30 is deformed by being pressed by an inner side wall of the positioning hole 11 and tightly abuts against the inner side wall of the positioning hole 11 to fit a tolerance gap between the positioning block 21 and the positioning hole 11. It is understood that the housing assembly 100 is used in a mobile terminal 200 device, and the mobile terminal 200 device may be an electronic device such as a mobile phone, a tablet computer, a notebook computer, an e-book reader, and a music player.

In the present embodiment, the first housing 10 has a first assembling sidewall 101, the positioning block 21 has a first positioning dimension to the first assembling sidewall 101, the second housing 20 has a second assembling sidewall 201, the positioning hole 11 has a second positioning dimension to the second assembling sidewall 201, and the deformation protrusion 30 is configured to fit a difference between the first positioning dimension and the second positioning dimension. Due to the different manufacturing manners of the first housing 10 and the second housing 20, the form and location tolerances of the first housing 10 and the second housing 20 are different, that is, the values of the first positioning dimension and the second positioning dimension are different, and there is a difference therebetween. When the first positioning dimension is larger than the second positioning dimension, the positioning block 21 is matched with the positioning hole 11, and a gap is formed between the first assembling side wall 101 and the second assembling side wall 201; when the first positioning dimension is smaller than the second positioning dimension, and the positioning block 21 is matched with the positioning hole 11, interference occurs between the first assembling side wall 101 and the second assembling side wall 201; based on this, a deformation protrusion 30 is disposed between the positioning block 21 and the positioning hole 11 for adapting to the difference between the first positioning dimension and the second positioning dimension. Wherein, the protruding 30 of deformation is made by elastic material, plastic material or other material that can receive the force and produce deformation, and the protruding 30 interference setting of deformation is in the locating piece 21 with between the locating hole 11, the protruding 30 of deformation can be because the atress produces deformation, the protruding 30 deformation of deformation drives second casing 20 is to being close to first casing 10 direction removes, so guarantees first casing 10 with reasonable fit clearance between the second casing 20. As a preferred embodiment, the positioning hole 11 is a rectangular hole, the positioning block 21 is a rectangular protrusion, the deformation protrusion 30 is fixedly disposed on the periphery of the rectangular protrusion, the deformation protrusion 30 is deformed by being squeezed by the inner sidewall of the rectangular hole, and the rectangular protrusion drives the second housing 20 to move toward the first housing 10. In other embodiments, the positioning block 21 is disposed on the first housing 10, the positioning hole 11 is disposed on the second housing 20, the deformation protrusion 30 may further be fixedly disposed on the periphery of the positioning hole 11, the deformation protrusion 30 is deformed by being pressed by the outer sidewall of the positioning block 21, and the deformation protrusion 30 applies a restoring force close to the second housing 20 to the positioning block 21 in order to restore the deformation, so as to achieve substantially the same technical effect.

According to the shell assembly, the deformation protrusions are arranged on the periphery of the positioning block and are tightly abutted against the inner side wall of the positioning hole, and the deformation protrusions are extruded by the inner side wall of the positioning hole to deform so as to adapt to a tolerance gap between the positioning block and the positioning hole, so that a reasonable matching gap between the first shell and the second shell is ensured, and the appearance performance of the shell assembly is improved.

Further, the first housing 10 further has a buffer hole 12 adjacent to the positioning hole 11, the positioning hole 11 is separated from the buffer hole 12 by a partition plate 40, the deformation protrusion 30 abuts against the partition plate 40, and the buffer hole 12 provides a deformation space for the partition plate 40, so as to reduce the structural stress of the partition plate 40.

Referring to fig. 3 to 4, in this embodiment, in order to prevent the deformation of the deformation protrusion 30 from being reduced, and prevent the deformation protrusion 30 from generating large plastic deformation, even from being crushed or sheared, the buffer hole 12 is formed at a position adjacent to the positioning hole 11, a partition 40 is disposed between the positioning hole 11 and the buffer hole 12, and the partition 40 can be slightly deformed along the direction of the buffer hole 12 to indirectly reduce the contact strength at the contact position between the deformation protrusion 30 and the inner side wall of the positioning hole 11. As a preferred embodiment, the buffer hole 12 is a rectangular hole, and the protruding directions of the buffer hole 12 and the deformation protrusion 30 are parallel to each other, that is, the buffer hole 12 is disposed on one side of the positioning hole 11 in the vertical direction. Buffer hole 12 with form between the locating hole 11 baffle 40, the protruding 30 of deformation not direct with baffle 40 contradicts, but pass through locating piece 21 lateral wall with the contact of baffle 40, work as the protruding 30 of deformation with when the locating hole 11 inside wall is contradicted, because the protruding 30 shape of deformation is the triangle-shaped, can produce one and make locating piece 21 lateral wall extrusion baffle 40's component, and then reduced the protruding 30 of deformation with the contact stress between the locating hole 11 inside wall. Referring to fig. 4, as a preferred embodiment, the size of the buffer hole 12 is slightly smaller than that of the positioning hole 11, the buffer hole 12 is rectangular, the buffer hole 12 is disposed at a side of the positioning hole 11 close to the deformation protrusion 30, the partition 40 is formed between the buffer hole 12 and the positioning hole 11, and the partition 40 is thin-plate-shaped. The deformation protrusion 30 abuts against the inner side wall of the positioning hole 11, the partition plate 40 is deformed by extrusion of the deformation protrusion 30, the deformation amount of the partition plate 40 is changed dynamically, and when the matching tolerance is large, the deformation amount of the partition plate 40 is small, so that the deformation amount of the deformation protrusion 30 is small; when the fitting tolerance is small, the deformation amount of the diaphragm 40 is large, and the deformation amount of the deformation protrusion 30 is ensured to be small. In other embodiments of the present invention, an accommodating groove 23 may be disposed on the positioning block 21, the accommodating groove 23 is disposed on a side of the positioning block 21 close to the deformation protrusion 30, the accommodating groove 23 is used to accommodate a crushed and sheared portion of the deformation protrusion 30, and the crushed and sheared portion of the deformation protrusion 30 enters the accommodating groove 23 under the action of the pressing force, so as to ensure that the crushed and sheared portion of the deformation protrusion 30 is not excessively accumulated between the positioning block 21 and the positioning hole 11, or even extruded along between the first casing 10 and the second casing 20, which affects the appearance of the casing assembly 100.

Further, the partition plate 40 is provided with a first chamfer 41 at an opening of the positioning hole 11, and the deformation protrusion 30 slides into the positioning hole 11 along the first chamfer 41 of the partition plate 40 along with the matching of the positioning block 21 and the positioning hole 11.

Referring to fig. 1 and 5 to 6, in this embodiment, the partition 40 is provided with a first chamfer 41 at the opening of the positioning hole 11, when the positioning block 21 is installed in the positioning hole 11, the deformation protrusion 30 is pressed in a Z direction, the pressing force in the Z direction is decomposed along the first chamfer 41 by the first chamfer 41 to generate a Y-direction component, the Y-direction component is close to the first housing 10, and the deformation protrusion 30 drives the positioning block 21 to move towards the first housing 10, so that the second housing 20 moves towards the first housing 10 until the second housing 20 and the first housing 10 completely abut against each other, and a fit gap between the first housing 10 and the second housing 20 is better eliminated.

Further, the deformation protrusion 30 has a second chamfer 31 matching with the first chamfer 41, and the partition 40 presses the deformation protrusion 30 along the second chamfer 31.

Referring to fig. 2 and 7 to 8, in this embodiment, in order to improve the stress performance of the positioning block 21, a second chamfer 31 is disposed on a side of the deformation protrusion 30 close to the inner side wall of the positioning hole 11, and the second chamfer 31 is matched with the first chamfer 41, so as to provide a good guiding effect for the installation of the positioning block 21. In addition, because the first chamfer 41 is in surface contact with the second chamfer 31, the situation that the deformation bulge 30 is torn when the partition board 40 which is made of hard material is extruded with the deformation bulge 30 can be effectively prevented.

Further, the deformation protrusion 30 is integrally formed on the positioning block 21.

In this embodiment, the deformation protrusion 30 is a triangular rib, the triangular rib is abutted to the positioning hole 11, and the triangular rib is integrated with the positioning block 21, so that the positioning block 21 is better stressed. In other embodiments, the deformation protrusion 30 is further integrally formed with the positioning hole 11, the deformation protrusion 30 is a triangular rib, the triangular rib is extruded by the outer side wall of the positioning block 21 to generate deformation, the triangular rib generates a restoring force to the positioning block 21, the restoring force is close to the positioning block 21 relative to the second housing 20 for restoring the deformation, and the triangular rib can be replaced by a boss, a cylinder, or the like to achieve substantially the same effect.

Further, the first housing 10 includes a middle frame 12, the positioning hole 11 is disposed on the middle frame 12, the second housing 20 includes a first cover 22, the positioning block 21 is disposed on the first cover 22, and the first cover 22 covers the middle frame 12.

Referring to fig. 1, fig. 2 and fig. 9, in the present embodiment, the first housing 10 includes the middle frame 12, the second housing 20 includes the first cover 22, and the first cover 22 is connected to the middle frame 12. In the first embodiment of the present invention, the first cover plate 22 is made of plastic or metal material, the first cover plate 22 is in a thin sheet shape, and is covered and connected to the middle frame 12 in a snap-fit manner, specifically, the positioning on the first cover plate 22 is matched with the positioning hole 11 on the middle frame 12, so as to ensure the assembly precision of the first cover plate 22 and the middle frame 12, and further ensure the matching gap between the first casing 10 and the second casing 20. In the second embodiment of the present invention, the second casing 20 further includes a double-sided tape, and the first cover plate 22 is firstly adhered to the middle frame 12 through the double-sided tape, and then is matched and clamped on the middle frame 12 through the positioning block 21 and the positioning hole 11.

Further, the first housing 10 further includes a second cover plate 13 fixed to the middle frame 12, the second cover plate 13 is arranged side by side with the first cover plate 22, and the first cover plate 22 is in clearance fit with the second cover plate 13.

In the present embodiment, the second cover 13 is fixedly connected to the middle frame 12, and the second cover 13 is arranged in parallel with the first cover 22. In the embodiment, the second cover plate 13 is made of plastic or metal material, the second cover plate 13 is bonded to the middle frame 12 by dispensing, the first cover plate 22 is located on the side wall of the second cover plate 13, and the fit clearance between the first cover plate 22 and the second cover plate 13 depends on the deformation amount of the deformation protrusion 30. The second cover plate 13 is in a long plate shape, so that the relative rotation of the first cover plate 22 with respect to the second cover plate 13 is limited, and the assembly precision of the first cover plate 22 and the second cover plate 13 is further improved.

Further, the number of the first cover plates 22 is two, and the second cover plate 13 is located between the two first cover plates 22.

Referring to fig. 1, 2 and 9, in the present embodiment, the number of the first cover plates 22 is two, the number of the second cover plates 13 is one, the second cover plates 13 are adhered to the center of the middle frame 12, the first cover plates 22 are matched with the positioning holes 11 of the middle frame 12 through the positioning blocks 21, and the two first cover plates 22 are respectively arranged on two sides of the middle frame 12 in parallel. In a specific embodiment of the present embodiment, the middle frame 12 is provided with 6 positioning holes 11, each first cover plate 22 is provided with 3 positioning blocks 21, the positioning blocks 21 are respectively disposed at the middle part and two edges of the inner side wall of the first cover plate 22, the positioning holes 11 are grouped into 3 groups, and each group of the positioning holes 11 is correspondingly disposed at the middle part and two edges of the outer side wall of the middle frame 12, so as to stably fix the first cover plate 22 on the middle frame 12. Of course, in consideration of the stability of the connection of the first cover plate 22, in other embodiments, the positioning block 21 may be additionally provided on the inner side wall of the first cover plate 22, and the positioning hole 11 may be additionally provided corresponding to the middle frame 12, so that the connection between the first cover plate 22 and the middle frame 12 is more reliable.

The invention also provides a mobile terminal 200, wherein the mobile terminal 200 comprises the housing assembly 100.

Referring to fig. 1, fig. 2 and fig. 9, in an embodiment of the present invention, the mobile terminal 200 includes a housing assembly 100 and a camera module, the first cover plate 22 is provided with a first semicircular hole 24, the second cover plate 13 is provided with a second semicircular hole 14 corresponding to the first semicircular hole 24 at a corresponding position, the first semicircular hole 24 and the second semicircular hole 14 cooperate with each other to form a mounting hole, and the mounting hole is used for mounting the camera module. There is a gap between the outer side wall of the camera module and the inner side wall of the mounting hole, and the gap value is affected by the deformation amount of the deformable protrusions 30. A small range of clearance values is required to prevent the amount of deformation of the deformable protrusions 30 from being too small, so that the clearance is too large and dust and impurities enter the housing assembly 100. However, the reserved gap value cannot be too small, so that the deformation amount of the deformable protrusion 30 is too large, and the camera module and the mounting hole are difficult to assemble. In other embodiments, the mounting hole may be a complete circular hole, the mounting hole is disposed on the first cover plate 22 or the second cover plate 13, and the camera module is disposed in the mounting hole.

According to the shell assembly and the mobile terminal, the positioning block is matched with the positioning hole, the deformation protrusion is arranged on the periphery of the positioning block, and the deformation protrusion is used for being matched with a tolerance gap between the positioning block and the positioning hole. Meanwhile, the positioning blocks are adjacently arranged, the buffer space is used for providing a deformation space for the partition plates, and the contact stress between the deformation protrusions and the partition plates is reduced.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A housing assembly, comprising a first housing and a second housing secured to the first housing, the first shell is provided with a positioning hole, the second shell is provided with a positioning block matched with the positioning hole, the periphery of the positioning block is provided with a deformation bulge which is deformed by the extrusion of the inner side wall of the positioning hole, and closely abutted against the inner side wall of the positioning hole, the first shell is provided with a first assembling side wall, the positioning block has a first positioning size from the first assembling side wall, the second shell has a second assembling side wall, the second device side wall is in interference fit with the first assembly side wall, the positioning hole has a second positioning size from the positioning hole to the second assembly side wall, the deformation bulge is used for adapting to the difference between the first positioning size and the second positioning size.

2. The housing assembly of claim 1, wherein the first housing further has a buffer hole adjacent to the positioning hole, the positioning hole and the buffer hole are separated by a spacer, the deformation protrusion abuts against the spacer, and the buffer hole provides a deformation space for the spacer to reduce a structural stress of the spacer.

3. The housing assembly of claim 2, wherein the partition has a first chamfer at the opening of the positioning hole, and the deformable protrusion slides into the positioning hole along the first chamfer of the partition with the positioning block engaged with the positioning hole.

4. The housing assembly of claim 3 wherein said crush lobe has a second chamfer mating with said first chamfer, said diaphragm compressing said crush lobe along said second chamfer.

5. The housing assembly according to any one of claims 1 to 4, wherein the deformation protrusion is partially located at the opening of the positioning hole by being pressed by an inner sidewall of the positioning hole.

6. The housing assembly according to any one of claims 1 to 4, wherein the deformation protrusion is integrally formed with the positioning block.

7. The shell assembly as claimed in any one of claims 1 to 4, wherein the first shell includes a middle frame, the positioning hole is disposed on the middle frame, the second shell includes a first cover plate, the positioning block is disposed on the first cover plate, and the first cover plate covers the middle frame.

8. The housing assembly of claim 7, wherein the first housing further comprises a second cover plate secured to the center frame, the second cover plate being juxtaposed with the first cover plate, the first cover plate being a clearance fit with the second cover plate.

9. The housing assembly of claim 8 wherein said first cover plates are two in number and said second cover plate is positioned between two of said first cover plates.

10. A mobile terminal, characterized in that it comprises a housing assembly according to claims 1-8.