阅读说明：本技术 一种小a壳免保压安装方法 (Pressure-maintaining-free mounting method for small A shell ) 是由 王兆敏 于 2021-08-04 设计创作，主要内容包括：本发明属于移动终端组装技术领域,具体涉及一种小A壳免保压安装方法。包括：配置小A壳,小A壳的扣合带上设置应力集中点、点胶,在安装槽内设置用于粘接小A壳的粘连物、安装,通过扣合带将小A壳扣入点胶之后的安装槽内、应力集中,在扣合后通过挤压小A壳的方式,将小A壳各边的径向应力集中至应力集中点。本发明设置应力集中点,将小A壳扣合后所产生的的径向应力进行集中并抵消,最终使小A壳只具有少量的轴向应力存在,而此少量轴向应力会由安装槽所限制,能够实现在扣合后不用保压也能实现小A壳的稳定粘接,能够避免开胶、节约了生产时长,降低了生产周期进而增加了生产效率。(The invention belongs to the technical field of mobile terminal assembly, and particularly relates to a pressure-maintaining-free mounting method for a small A shell. The method comprises the following steps: the small A shell is configured, the stress concentration point and the glue are arranged on the buckling belt of the small A shell, the adhesion object and the installation which are used for bonding the small A shell are arranged in the installation groove, the small A shell is buckled into the installation groove after the glue is glued through the buckling belt, the stress is concentrated, and the radial stress on each edge of the small A shell is concentrated to the stress concentration point in a mode of extruding the small A shell after the buckling. The invention sets the stress concentration point, concentrates and counteracts the radial stress generated after the small A shell is buckled, and finally ensures that the small A shell only has a small amount of axial stress, and the small amount of axial stress is limited by the mounting groove, so that the stable bonding of the small A shell can be realized without pressure maintaining after the buckling, the glue opening can be avoided, the production time is saved, the production period is reduced, and the production efficiency is further increased.)

1. A pressure-maintaining-free mounting method for a small A shell is characterized by comprising the following steps:

configuring a small A shell, wherein the small A shell is buckled into a mounting groove of a machine body through a buckling belt, and a stress concentration point is arranged on the buckling belt; the stress concentration point is realized by reducing partial width of the fastening belt;

dispensing, wherein an adhesive used for bonding the small A shell is arranged in the mounting groove;

mounting, namely buckling the small A shell into the mounting groove after dispensing through the buckling belt;

and stress concentration, namely concentrating the radial stress of each side of the small A shell to the stress concentration point in a mode of extruding the small A shell after buckling.

2. The pressure-free installation method according to claim 1, wherein: the stress concentration points are arranged at the corners of the small A shell.

3. The pressure-free installation method according to claim 2, wherein: the stress concentration points are four groups and are distributed at four corners of the small A shell.

4. The pressure-free installation method according to claim 1, wherein: the stress concentration point is arranged on one side of the buckling belt far away from the screen.

5. The pressure-free installation method according to claim 1, wherein: the stress concentration point is a banded space, and the gap between the stress concentration point and the installation groove is 0.14-0.18 mm.

6. The pressure-free installation method according to claim 5, wherein: the length of the stress concentration point is 17-23 mm.

7. The pressure-free installation method according to claim 1, wherein: the stress concentration step is realized by an extrusion part which is attached to at least one part of the periphery of the small A shell; the pressing part is buckled to the radial direction of the small A shell in a forced mode through keeping the pressing part, and then the pressing part moves towards the stress concentration point along the axial direction of the small A shell.

8. The pressure-free installation method according to claim 7, wherein: the extrusion part comprises a small plate and an extrusion head; the force application end of the small plate is used for applying pressure to the small A shell away from a screen to be installed; the pressure head is used for giving pressure to the small A shell close to the screen to be installed.

9. The pressure-free installation method according to claim 8, wherein: the force application end is planar, and the thickness of the force application end is not less than that of the screen; the pressure head is L-shaped, and one end of the pressure head is attached to the force application end.

Technical Field

The invention belongs to the technical field of mobile terminal assembly, and particularly relates to a pressure-maintaining-free mounting method for a small A shell.

Background

The small A shell is used as a connecting link between the mobile phone screen and the machine body, the whole structure is a small frame, and the bonding strength between the small A shell and the machine body needs to ensure the fixity of the mobile phone screen; meanwhile, the outer screen of the mobile phone is high in brittleness, so that the small A shell needs to have certain elasticity to buffer the rigid extrusion between the screen and the mobile phone body caused by falling, collision and the like, and the screen is prevented from being broken.

The connection part of the existing small A shell and the machine body is an installation groove, and the width of the combination part of the small A shell in the installation groove is slightly smaller than the installation groove, generally 0.04-0.05 mm. The installation process is as follows: dispensing and buckling a small A shell in the mounting groove; because the width difference is only 0.04-0.05mm, after the glue is dispensed, the space in the mounting groove is not enough to accommodate the total volume of the small shell A and the glue; because the extrusion effect, little A shell has a perpendicular to its axial extrusion stress, in order to guarantee this extrusion stress can not influence the bonding strength between it and the organism because of kick-backing, need extrude the pressurize to it behind the little A shell of withholding, until the glue solidification, this process is consuming time and consuming power and easy the debonding.

Disclosure of Invention

In view of the above, the invention provides a pressure-maintaining-free mounting method for a small A shell, which is characterized in that a stress concentration point is arranged, radial stress generated after the small A shell is buckled is concentrated and counteracted, and finally the small A shell only has a small amount of axial stress, and the small amount of axial stress is limited by a mounting groove, so that stable bonding of the small A shell can be realized without pressure maintaining after buckling, glue failure can be avoided, the production time is saved, the production period is shortened, and the production efficiency is increased.

In order to achieve the technical purpose, the invention adopts the following specific technical scheme:

a pressure-maintaining-free installation method for a small A shell comprises the following steps:

configuring a small A shell, wherein the small A shell is buckled into a mounting groove of a machine body through a buckling belt, and a stress concentration point is arranged on the buckling belt; the stress concentration point is realized by reducing partial width of the fastening belt;

dispensing, wherein an adhesive used for bonding the small A shell is arranged in the mounting groove;

mounting, namely buckling the small A shell into the mounting groove after dispensing through the buckling belt;

and stress concentration, namely concentrating the radial stress of each side of the small A shell to the stress concentration point in a mode of extruding the small A shell after buckling.

Further, the stress concentration points are arranged at the corners of the small A shell.

Furthermore, four stress concentration points are distributed at four corners of the small A shell.

Furthermore, the stress concentration point is arranged on one side of the buckling belt far away from the screen.

Furthermore, the stress concentration point is a banded space, and the gap between the stress concentration point and the installation groove is 0.14-0.18 mmmm.

Further, the length of the stress concentration point is 17-23 mm.

Further, the stress concentration step is realized by an extrusion part which is attached to at least one part of the periphery of the small A shell; the pressing part is buckled to the radial direction of the small A shell in a forced mode through keeping the pressing part, and then the pressing part moves towards the stress concentration point along the axial direction of the small A shell.

Further, the extrusion part comprises a small plate and an extrusion head; the force application end of the small plate is used for applying pressure to the small A shell away from a screen to be installed; the pressure head is used for giving pressure to the small A shell close to the screen to be installed.

Furthermore, the force application end is planar, and the thickness of the force application end is not less than that of the screen; the pressure head is L-shaped, and one end of the pressure head is attached to the force application end.

Drawings

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

FIG. 1 is a top view of a small A shell in an embodiment of the present invention;

FIG. 2 is a schematic front sectional view of the small A case and the housing before being mounted in the embodiment of the present invention;

FIG. 3 is a front cross-sectional view of the small A case and the housing after being assembled in accordance with the preferred embodiment of the present invention;

FIG. 4 is a schematic front sectional view of a small A case combined with an extruding part according to an embodiment of the present invention;

wherein: 1. a small A shell; 11. fastening the belt; 111. a stress concentration point; 2. a body; 21. mounting grooves; 31. a platelet; 32. and (4) pressing head.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. 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.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in practical implementation, and the type, quantity and proportion of the components in practical implementation can be changed freely, and the layout of the components can be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

In one embodiment of the present invention, a pressure-maintaining-free installation method for a small a-shell 1 of a mobile phone is provided, which includes:

configuring a small A shell 1, wherein the small A shell 1 is buckled into a mounting groove 21 of a machine body 2 through a buckling belt 11, and a stress concentration point 111 is arranged on the buckling belt 11; stress concentrators 111 are accomplished by reducing the width of portions of fastening strips 11, as shown in FIGS. 1-3;

dispensing, wherein an adhesive used for bonding the small A shell 1 is arranged in the mounting groove 21;

mounting, namely buckling the small A shell 1 into the mounting groove 21 after dispensing through the buckling belt 11, and obtaining the result shown in FIG. 3;

after the small a shell 1 is pressed, the stress is concentrated, and the radial stress of each side of the small a shell 1 is concentrated to the stress concentration point 111. The operation schematic is shown in fig. 4.

In the present embodiment, as shown in fig. 1 to 4, stress concentration points 111 are provided at the corners of the small a case 1.

In this embodiment, the stress concentration points 111 are four groups, and are distributed at four corners of the small a shell 1.

In the present embodiment, as shown in fig. 2-4, the stress concentration point 111 is disposed on the side of the fastening strip 11 away from the screen.

In this embodiment, the stress concentration point 111 is a belt-shaped space, and the gap between the stress concentration point and the mounting groove 21 is 0.14-0.18 mm. In this embodiment, the gap value is 0.16mm, taking the existing market owner model as an example.

In this embodiment, the stress concentration points 111 are 17-23mm in length. The length of the present embodiment is 20mm, taking the existing market owner model as an example.

In the present embodiment, the stress concentration step is realized by a pressing portion provided in abutment with at least a part of the outer periphery of the small a shell 1; by keeping the pressing portion forcibly fastened to the radial direction of the small a shell 1 and then moving the pressing portion toward the stress concentration point 111 in the axial direction of the small a shell 1.

In the present embodiment, as shown in fig. 4, the pressing section includes a small plate 31 and a pressing head 32; the force application end of the small plate 31 is used for applying pressure to the small A shell 1 away from a screen to be installed; the indenter 32 is used to give pressure to the small a shell 1 close to the screen to be mounted.

In the embodiment, the force application end is in a plane shape, and the thickness is equal to or slightly larger than the screen in order to ensure the pressing effect; the ram 32 is L-shaped with one end attached to the force application end.

The operation process of the extrusion part comprises the following steps:

as shown in fig. 4, the pressing part is buckled on the small a shell 1, the force is applied to move along the center of one side of the small a shell 1 to one corner, and after the force is repeatedly applied for a plurality of times, the force is applied to move along the center of one side of the small a shell 1 to the other corner of the side; the operation is carried out on each edge, stress is concentrated at four corners under the extrusion action of the extrusion part due to the elasticity of the small A shell 1, and stress is released due to the stress concentration points 111 arranged at the corners, so that the buckling belt 11 of the small A shell 1 can be prevented from popping out of the mounting groove 21 without pressure maintaining; after the small A shell 1 is extruded by the extrusion part, the buckling belt 11 is tightly combined with the mounting groove 21, and the bonding strength between the small A shell 1 and the machine body 2 is also ensured.

This embodiment sets up stress concentration point 111, concentrates and offsets the produced radial stress behind the 1 lock of little A shell, finally makes little A shell 1 only have a small amount of axial stress and exists, and this a small amount of axial stress can be restricted by mounting groove 21, can realize also realizing the stable bonding of little A shell 1 with the pressurize after the lock, can avoid opening gluey, it is long when having practiced thrift production, reduced production cycle and then increased production efficiency. The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.