Shell structure, terminal equipment and processing method of shell structure

Abstract

The invention discloses a shell structure, terminal equipment and a processing method of the shell structure. The shell structure comprises a middle frame, an interface piece and an insulating piece. The middle frame has an interface hole. The interface piece is at least partially located in the interface hole, and a gap is formed between the interface piece and the interface hole. The insulating part is arranged between the interface part and the interface hole and fills the gap so as to isolate the middle frame from the interface part. The shell structure further comprises a first limiting part, a second limiting part, a third limiting part and a fourth limiting part, the first limiting part is arranged on the inner wall face of the interface hole, the second limiting part is arranged on the surface, facing the inner wall face of the interface hole, of the insulating part, and the first limiting part and the second limiting part are matched to limit relative movement of the insulating part and the middle frame in the first direction; the third limiting part is arranged on the outer wall face of the interface piece, the fourth limiting part is arranged on the surface, facing the outer wall face of the interface piece, of the insulating piece, and the third limiting part and the fourth limiting part are matched to limit relative movement of the interface piece and the insulating piece in the first direction.

Description

Technical Field

[0001] The present application relates to the technical field of communication equipment manufacturing, and in particular to a housing structure, a terminal device, and a processing method of the housing structure. Background Art

[0002] With the popularization of communication equipment, communication terminal equipment is being used more and more widely. The appearance of communication terminal equipment tends to be simpler and more fashionable, and the functions are complete and diversified. In order to meet the diversified needs of communication terminal equipment, the interfaces of communication terminal equipment are also integrated. The interface is generally set in the middle frame of the communication terminal equipment. Due to the frequent plugging and unplugging of the interface, it must have the following three characteristics: strong hardness and wear resistance; high bending or tensile strength; insulation from the middle frame of the communication terminal equipment, so as to prevent leakage and ensure that the communication terminal equipment can receive good communication signals. In the related art, the interface is set as a metal part to improve the hardness and wear resistance of the interface, and then the plastic part is injection molded between the middle frame and the metal interface to insulate the metal interface from the middle frame of the communication terminal equipment. However, there is still a problem of insufficient connection strength between the metal interface and the plastic part. Summary of the invention

[0003] In view of this, the present application provides a housing structure, a terminal device and a processing method of the housing structure, which can improve the problem of insufficient connection strength between the metal interface and the plastic part.

[0004] In the first aspect, an embodiment of the present application provides a shell structure, including a middle frame, an interface part and an insulating part. The middle frame has an interface hole, the interface part has a plug-in hole, and the extension direction of the plug-in hole is a first direction. The interface part is at least partially located in the interface hole, and there is a gap between the interface part and the interface hole. The insulating part is arranged between the interface part and the interface hole, and the insulating part fills the gap to isolate the middle frame from the interface part. The shell structure also includes a first limiting part, a second limiting part, a third limiting part and a fourth limiting part, the first limiting part is arranged on the inner wall surface of the interface hole, the second limiting part is arranged on the surface of the inner wall surface of the insulating part facing the interface hole, the first limiting part and the second limiting part cooperate to limit the relative movement of the insulating part and the middle frame along the first direction; the third limiting part is arranged on the outer wall surface of the interface part, the fourth limiting part is arranged on the surface of the outer wall surface of the insulating part facing the interface part, and the third limiting part and the fourth limiting part cooperate to limit the relative movement of the interface part and the insulating part along the first direction.

[0005] In the above-mentioned shell structure, the middle frame is the basic component of the shell structure, and the middle frame has an interface hole, and the shape and size of the interface hole are designed to accommodate the interface part. The interface part has a plug-in hole, and its extension direction is defined as a first direction. The interface part is at least partially embedded in the interface hole, and a certain gap is left between the two. The insulating part is a key component in the shell structure, which is arranged between the interface part and the interface hole to fill the above gap. The role of the insulating part is not only physical isolation to prevent the middle frame from directly contacting the interface part, but more importantly, it provides electrical insulation to reduce the risk of current interference and short circuit of the equipment. In order to further improve the stability and safety of the shell structure, the shell structure also includes a plurality of limiting parts. First, the first limiting part is arranged on the inner wall surface of the interface hole, and the second limiting part is located on the surface of the inner wall surface of the insulating part facing the interface hole. The two limiting parts work together to limit the relative movement of the insulating part and the middle frame along the first direction, thereby improving the displacement caused by vibration or impact. The third limiting part is arranged on the outer wall surface of the interface part, and the fourth limiting part is located on the surface of the outer wall surface of the insulating part facing the interface part. The coordinated use of the two limiting parts effectively limits the relative movement of the interface component and the insulating component along the first direction, thereby ensuring a stable connection of the interface component.

[0006] In summary, the embodiments of the present application not only improve the problems of poor interface stability and insufficient insulation performance of electronic equipment in the prior art through a carefully designed housing structure, but also significantly improve the overall protection level of the equipment. This innovative structural design ensures the reliable operation of electronic equipment in various complex environments and has broad application prospects.

[0007] Optionally, the interface member is a non-rotating body.

[0008] Optionally, the interface part includes a first section, a second section and a third section distributed in sequence along the first direction, the third section is located on the side of the second section facing the inside of the middle frame; the third limiting portion includes an interface limiting groove, the interface limiting groove is arranged on the outer peripheral surface of the second section and surrounds the plug-in hole; the fourth limiting portion includes a first limiting convex ring, the first limiting convex ring is embedded in the interface limiting groove to limit the relative movement of the interface part and the insulating part along the first direction.

[0009] Embedded in the optional, third section has an inner end face facing the inside of the middle frame, the third limiting portion also includes an end face buckle groove, the end face buckle groove is simultaneously arranged on the inner end face and the outer peripheral surface of the third section, and the end face buckle groove is arranged around the plug-in hole; the fourth limiting portion also includes a second limiting convex ring, and the second limiting convex ring is embedded in the end face buckle groove to limit the interface component from detaching from the insulating component in a direction close to the inside of the middle frame.

[0010] Optionally, the first section has an outer end face away from the interior of the middle frame, and the third limiting portion also includes an end face bevel groove, which is simultaneously arranged on the outer end face and the outer peripheral surface of the first section, and the end face bevel groove is arranged around the plug-in hole, and the end face bevel groove has an outer chamfered surface; the fourth limiting portion also includes a third limiting convex ring, the third limiting convex ring is embedded in the end face bevel groove, and the third limiting convex ring has a limiting bevel inclined toward the interior of the middle frame, and the limiting bevel abuts against the outer chamfered surface to limit the interface component from disengaging from the insulating component in a direction away from the interior of the middle frame.

[0011] Optionally, the first limiting portion includes a middle frame limiting groove, which is arranged around the interface hole; the second limiting portion includes a fixing convex ring, which is embedded in the middle frame limiting groove to limit the relative movement of the insulating member and the middle frame along the first direction.

[0012] Optionally, the first limiting portion also includes a material pulling hole, which is arranged on the hole wall of the interface hole, and the central axis of the material pulling hole is arranged at an angle to the first direction; the second limiting portion also includes a material pulling column, which is arranged in the material pulling hole to limit the relative movement of the insulating part and the middle frame along the first direction.

[0013] Optionally, there are multiple pulling holes, the width direction of the middle frame is the second direction, the multiple pulling holes are spaced apart along the second direction, there are multiple pulling columns, the multiple pulling columns are spaced apart along the second direction, the pulling columns are arranged corresponding to the pulling holes, and each pulling column is arranged at the corresponding pulling hole.

[0014] In a second aspect, an embodiment of the present application provides a terminal device, comprising a housing structure in one or more of the above embodiments.

[0015] In a third aspect, an embodiment of the present application provides a method for processing a shell structure, which is used to process the shell structure in one or more of the above embodiments. The processing method includes the following steps: Positioning: providing a middle frame semi-finished product, an interface component semi-finished product and a positioning jig, and fixing the relative positions of the middle frame semi-finished product and the interface component semi-finished product by the positioning jig to form a gap between the interface component semi-finished product and the interface hole; Injection molding: Provide the insulating material, melt the insulating material, inject and fill the gap between the interface semi-finished product and the interface hole, and then cool and shape it to obtain the insulating semi-finished product. The insulating semi-finished product isolates the middle frame semi-finished product and the interface semi-finished product.

[0016] Optionally, in the positioning step, an interface hole is opened on the middle frame semi-finished product, a plug-in hole is opened on the interface component semi-finished product, a positioning jig is at least partially extended into the plug-in hole, and the positioning jig and the interface component semi-finished product are fixed to each other, the positioning jig and the interface component semi-finished product are at least partially extended into the interface hole, and the positioning jig and the middle frame semi-finished product are fixed to each other, and a gap is formed between the interface component semi-finished product and the interface hole.

[0017] Optionally, the processing method also includes a finishing step, which is arranged after the injection molding step. The finishing step includes: removing the positioning fixture from the interface component semi-finished product to obtain a shell structure semi-finished product composed of a middle frame semi-finished product, an interface component semi-finished product and an insulating component semi-finished product, and removing excess material from the shell structure semi-finished product to obtain a finished shell structure.

[0018] Optionally, in the positioning step, the interface component semi-finished product includes an interface main body and an interface fixing part that are connected to each other, a plug-in hole is opened on the interface main body, and a fixing hole is opened on the interface fixing part; the positioning fixture includes a connecting part, a countersunk hole is opened on the connecting part, the connecting part is extended into the plug-in hole, and a bolt is passed through the countersunk hole and threadedly connected to the fixing hole.

[0019] Optionally, a processing allowance of 0.05 mm to 0.2 mm is reserved on the hole wall of the plug-in hole.

[0020] Optionally, the positioning fixture also includes a positioning portion, which is arranged on one side of the connecting portion; the middle frame semi-finished product includes a middle frame body and a boss, which is arranged on the outer side of the middle frame body, an interface hole is opened on the middle frame body, and a through hole is opened on the boss, and after the connecting portion and the interface component semi-finished product pass through the through hole and extend into the interface hole, the positioning portion is abutted against the boss to position the interface component semi-finished product along the first direction.

[0021] Optionally, the positioning fixture also includes a transition portion, which is located between the positioning portion and the connecting portion. After the positioning portion is abutted against the boss, the transition portion is located in the via hole, and an exhaust gap of 0.01 mm to 0.02 mm is reserved between the transition portion and the hole wall of the via hole, and the exhaust gap is used for exhaust during the injection molding step.

[0022] Optionally, the positioning fixture also includes a centering portion, which is located between the transition portion and the connecting portion. A centering bevel is processed on the outer peripheral surface of the centering portion, and an inner chamfered bevel is processed on the end surface of the plug-in hole away from the interface fixing portion. After the connecting portion is extended into the plug-in hole, the centering bevel abuts against the inner chamfered bevel to position the semi-finished interface component along the second direction and the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0023] Optionally, in the injection molding step, a first limiting portion is provided on the inner wall surface of the interface hole, and a third limiting portion is provided on the outer wall surface of the interface main body. The melted insulating component raw material is injected into and fills the gap between the interface component semi-finished product and the interface hole. After cooling and molding, a second limiting portion cooperating with the first limiting portion is formed, and a fourth limiting portion cooperating with the third limiting portion is formed; the first limiting portion and the second limiting portion cooperate to limit the relative movement of the insulating component and the middle frame along the first direction, and the third limiting portion and the fourth limiting portion cooperate to limit the relative movement of the interface component and the insulating component along the first direction.

[0024] Optionally, in the finishing step, the positioning jig is removed from the interface component semi-finished product, and the boss, the interface fixing part, the insulating component semi-finished product located in the via hole, and the insulating component semi-finished product located on the surface of the interface fixing part are removed; excess material of the middle frame body is removed, and excess material of the insulating component semi-finished product in the middle frame body is removed; the reserved machining allowance on the hole wall of the plug-in hole is removed; and the finished shell structure is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the shell structure in one embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the exploded structure of the shell structure in one embodiment of the present application.

[0027] Figure 3 It is an axial view of the cross-sectional structure of the shell structure in one embodiment of the present application.

[0028] Figure 4 It is a front view of the cross-sectional structure of the shell structure in one embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the overall structure of a semi-finished interface component in an embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of the overall structure of a positioning fixture in an embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of the overall structure of a semi-finished middle frame in an embodiment of the present application.

[0032] Figure 8 It is a schematic diagram of the assembly structure of a semi-finished interface component, a positioning fixture, and a semi-finished middle frame in an embodiment of the present application.

[0033] Fig. 9 It is a schematic diagram of the overall structure of a finished shell structure in one embodiment of the present application.

[0034] Main component symbols 001, shell structure; 100, middle frame; 110, interface hole; 120, microphone hole; 130, speaker hole; 140, first limit part; 141, middle frame limit groove; 142, material pulling hole; 1421, connecting section; 1422, limit section; 200, interface; 210, plug-in hole; 211, inner chamfered slope; 220, third limit part; 221, interface limit groove; 222, end face buckle groove; 223, end face oblique groove; 2231, outer chamfered slope; 230, first section; 240, second section; 250, third section; 300, insulating member; 310, second limit part; 311, fixed convex ring; 312, material pulling column; 320, fourth limit Positioning part; 321, first limiting convex ring; 322, second limiting convex ring; 323, third limiting convex ring; 3231, limiting inclined surface; 400, middle frame semi-finished product; 410, middle frame body; 420, boss; 421, second positioning surface; 422, through hole; 500, interface semi-finished product; 510, interface body; 520, interface fixing part; 521, fixing hole; 600, positioning fixture; 610, positioning part; 611, first positioning surface; 620, transition part; 630, centering part; 631, centering inclined surface; 640, connecting part; 650, countersunk hole; 700, insulating part semi-finished product; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0035] In order to further illustrate the technical means and effects adopted by the present application to achieve the intended application purpose, the following is combined with the drawings and implementation methods. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] In the related art, the interface and the middle frame are connected by setting the interface as a metal part, and then injecting a plastic part between the middle frame and the metal interface to insulate the metal interface from the middle frame of the communication terminal device. However, there is still a problem of insufficient connection strength between the metal interface and the plastic part.

[0038] An embodiment of the present application provides a shell structure, including a middle frame, an interface part and an insulating part. The middle frame has an interface hole, the interface part has a plug-in hole, and the extension direction of the plug-in hole is a first direction. The interface part is at least partially located in the interface hole, and there is a gap between the interface part and the interface hole. The insulating part is arranged between the interface part and the interface hole, and the insulating part fills the gap to isolate the middle frame from the interface part. The shell structure also includes a first limiting part, a second limiting part, a third limiting part and a fourth limiting part, the first limiting part is arranged on the inner wall surface of the interface hole, the second limiting part is arranged on the surface of the inner wall surface of the insulating part facing the interface hole, the first limiting part and the second limiting part cooperate to limit the relative movement of the insulating part and the middle frame along the first direction; the third limiting part is arranged on the outer wall surface of the interface part, the fourth limiting part is arranged on the surface of the outer wall surface of the insulating part facing the interface part, and the third limiting part and the fourth limiting part cooperate to limit the relative movement of the interface part and the insulating part along the first direction.

[0039] In the above-mentioned shell structure, the middle frame is the basic component of the shell structure, and the middle frame has an interface hole, and the shape and size of the interface hole are designed to accommodate the interface part. The interface part has a plug-in hole, and its extension direction is defined as a first direction. The interface part is at least partially embedded in the interface hole, and a certain gap is left between the two. The insulating part is a key component in the shell structure, which is arranged between the interface part and the interface hole to fill the above gap. The role of the insulating part is not only physical isolation to prevent the middle frame from directly contacting the interface part, but more importantly, it provides electrical insulation to reduce the risk of current interference and short circuit of the equipment. In order to further improve the stability and safety of the shell structure, the shell structure also includes a plurality of limiting parts. First, the first limiting part is arranged on the inner wall surface of the interface hole, and the second limiting part is located on the surface of the inner wall surface of the insulating part facing the interface hole. The two limiting parts work together to limit the relative movement of the insulating part and the middle frame along the first direction, thereby improving the displacement caused by vibration or impact. The third limiting part is arranged on the outer wall surface of the interface part, and the fourth limiting part is located on the surface of the outer wall surface of the insulating part facing the interface part. The coordinated use of the two limiting parts effectively limits the relative movement of the interface component and the insulating component along the first direction, thereby ensuring a stable connection of the interface component.

[0040] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features in the following embodiments and examples can be combined with each other.

[0041] Figure 1 The overall structural schematic diagram of the housing structure 001 in one embodiment of the present application is shown. Figure 2 A schematic diagram of the exploded structure of the shell structure 001 in one embodiment of the present application is shown.

[0042] See also Figure 1 and Figure 2One embodiment of the present application provides a shell structure 001, including a middle frame 100, an interface part 200 and an insulating part 300. The middle frame 100, as the main part of the communication terminal device, mainly supports and fixes other parts in the communication terminal device. The interface part 200 is used as a communication interface for electrically connecting cables to achieve functions such as charging, audio transmission and data transmission. The insulating part 300 is used to cover the interface part 200, which plays the role of isolating the middle frame 100 and the interface part 200, thereby achieving the insulation effect of the interface part 200.

[0043] In some embodiments, the middle frame 100 is made of AL7R0X series with a hardness of HV140, which ensures that the outer side of the middle frame 100 of the communication terminal device has a certain strength and hardness, while taking into account the advantages of the communication terminal device being light in weight and easy to carry.

[0044] In some embodiments, the interface component 200 is made of stainless steel SUS316 1 / 2H with a hardness of HV256-350, so that the interface of the interface component 200 is in the process of frequent plugging and unplugging, thereby ensuring its hardness and strength and having a certain wear resistance.

[0045] In some embodiments, the interface component 200 is an I / O interface, and the I / O interface is a three-in-one interface including a charging interface, an earphone interface, and a USB data line interface.

[0046] In some embodiments, the insulating member 300 is made of resin or plastic, such as ABS resin, polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), etc.

[0047] The interface member 200 has a plug hole 210. In some embodiments, the plug hole 210 has a cross section parallel to the end face of the plug hole 210, the cross section is waist-shaped, and the length of the plug hole 210 along the width direction of the middle frame 100 is greater than the length of the plug hole 210 along the thickness direction of the middle frame 100. The direction of the center line of the plug hole 210 is the first direction X. The plug hole 210 is used to insert a cable plug, so as to realize functions such as charging, audio transmission and data transmission.

[0048] In some embodiments, the plug-in hole 210 is disposed away from the chamfered end surface of the middle frame 100 to facilitate insertion of a cable plug.

[0049] The middle frame 100 has an interface hole 110, and the interface component 200 is at least partially located in the interface hole 110, with a gap between the interface component 200 and the interface hole 110. In some embodiments, the interface component 200 is completely received in the interface hole 110.

[0050] The insulating member 300 is disposed between the interface member 200 and the interface hole 110, and the insulating member 30 fills the gap to isolate the middle frame 100 from the interface member 200. The role of the insulating member 300 is not only physical isolation to prevent the middle frame 100 from directly contacting the interface member 200, but more importantly, it provides electrical insulation to reduce the risk of current interference and short circuit of the device.

[0051] In some embodiments, the middle frame 100 has a microphone hole 120, which is disposed on the middle frame 100, and the microphone hole 120 and the interface hole 110 are spaced apart along the second direction Y. The microphone hole 120 is used to connect the inside of the middle frame 100 with the outside, so that the microphone sensor disposed behind the microphone hole 120 can collect sound information from the outside. The second direction Y is perpendicular to the first direction X.

[0052] In some embodiments, the middle frame 100 has a speaker hole 130, which is arranged on the middle frame 100 and is located on the side of the interface hole 110 away from the microphone hole 120. The speaker hole 130 is used to connect the inside of the middle frame 100 with the outside world, so that the sound emitted by the speaker arranged behind the speaker hole 130 can be transmitted from the speaker hole 130.

[0053] Figure 3 It is an axial view of the cross-sectional structure of the shell structure 001 in one embodiment of the present application. Figure 4 1 and 2 are front views of the cross-sectional structure of the housing structure 001 in one embodiment of the present application. Both of them show the positional relationship of the middle frame 100, the interface component 200 and the insulating component 300 in one embodiment of the present application.

[0054] See also Figure 2 , Figure 3 as well as Figure 4 The housing structure 001 further includes a first limiting portion 140, a second limiting portion 310, a third limiting portion 220 and a fourth limiting portion 320. The first limiting portion 140 is arranged on the inner wall surface of the interface hole 110, and the second limiting portion 310 is arranged on the surface of the inner wall surface of the insulating member 300 facing the interface hole 110. The first limiting portion 140 and the second limiting portion 310 cooperate to limit the relative movement of the insulating member 300 and the middle frame 100 along the first direction X, thereby improving the displacement caused by vibration or impact. The third limiting portion 220 is arranged on the outer wall surface of the interface member 200, and the fourth limiting portion 320 is arranged on the surface of the outer wall surface of the insulating member 300 facing the interface member 200. The third limiting portion 220 and the fourth limiting portion 320 cooperate to limit the relative movement of the interface member 200 and the insulating member 300 along the first direction X, thereby ensuring the stable connection of the interface member 200.

[0055] In some embodiments, the interface member 200 is a non-rotating body, and after the insulating member 300 wraps the interface member 200, it can limit the freedom of movement of the interface member 200 along the first direction X, the second direction Y, and the third direction Z. Assuming two points at both ends of an object, the two points are connected into a line passing through the object, and there is at least one straight line passing through the object, and the object takes this straight line as the rotation center. When rotating, each part of the object has the same shape when it rotates to a fixed position, then the object is a standard rotating body.

[0056] If there is no straight line passing through the object that can make every part of the object have the same shape when rotated to a fixed position, then the object is a non-rotating body.

[0057] The projection of the interface member 200 along the second direction Y is different from the projection of the interface member 200 along the third direction Z, so that the interface member 200 is a non-rotating body, which can limit the rotational freedom of the interface member 200, thereby improving the position stability of the interface member 200. The second direction Y and the third direction Z are both perpendicular to the first direction X.

[0058] In some embodiments, the projection of the interface member 200 along the first direction X is a waist-shaped structure.

[0059] In some embodiments, the first limiting portion 140 includes a middle frame limiting groove 141, and the middle frame limiting groove 141 is arranged around the interface hole 110. The second limiting portion 310 includes a fixing convex ring 311, and the fixing convex ring 311 is arranged on the surface of the inner wall of the insulating member 300 facing the interface hole 110, and the fixing convex ring 311 is embedded in the middle frame limiting groove 141 to limit the relative movement of the insulating member 300 and the middle frame 100 along the first direction X.

[0060] In some embodiments, the fixing protrusion ring 311 and the insulating member 300 are integrally formed.

[0061] In some embodiments, the first limiting portion 140 further includes a material pulling hole 142, which is disposed on the hole wall of the interface hole 110, and the central axis of the material pulling hole 142 is disposed at an angle with the first direction X. The second limiting portion 310 further includes a material pulling column 312, which is disposed on the surface of the inner wall of the insulating member 300 facing the interface hole 110, and the material pulling column 312 is filled in the material pulling hole 142 to limit the relative movement of the insulating member 300 and the middle frame 100 along the first direction X.

[0062] In some embodiments, the pulling column 312 is integrally formed with the insulating member 300 .

[0063] In some embodiments, the central axis of the pulling hole 142 is perpendicular to the first direction X. The pulling hole 142 can be set on the inner wall of the interface hole 110 along the third direction Z, or on the inner wall of the interface hole 110 along the second direction Y, or can be set at an angle so that the central axis of the interface hole 110 is between the second direction Y and the third direction Z.

[0064] In some embodiments, there are multiple material pulling holes 142, the width direction of the middle frame 100 is the second direction Y, the multiple material pulling holes 142 are spaced apart along the second direction Y, there are multiple material pulling columns 312, the multiple material pulling columns 312 are spaced apart along the second direction Y, the material pulling columns 312 are arranged corresponding to the material pulling holes 142, and each material pulling column 312 is arranged at the corresponding material pulling hole 142.

[0065] In some embodiments, the central axis of the material pulling hole 142 is parallel to the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0066] In some embodiments, the material pulling hole 142 includes a connecting section 1421 and a limiting section 1422, the limiting section 1422 is located on a side of the connecting section 1421 away from the interface hole 110, and along the third direction Z, the projection area of ​​the limiting section 1422 is larger than the projection area of ​​the connecting section 1421. The material pulling column 312 fills the connecting section 1421 and the limiting section 1422 to limit the relative movement of the insulating member 300 and the middle frame 100 along the first direction X, and at the same time, limits the material pulling column 312 from coming out of the material pulling hole 142.

[0067] In some embodiments, the connecting section 1421 is roughly cylindrical, the limiting section 1422 is roughly conical, and the maximum diameter of the limiting section 1422 is greater than the diameter of the connecting section 1421 .

[0068] In some embodiments, the interface component 200 includes a first section 230 , a second section 240 , and a third section 250 sequentially distributed along the first direction X, and the third section 250 is located on a side of the second section 240 facing the inside of the middle frame 100 .

[0069] The third limiting portion 220 includes an interface limiting groove 221, which is disposed on the outer circumference of the second section 240 and surrounds the plug-in hole 210. The fourth limiting portion 320 includes a first limiting convex ring 321, which is disposed on the surface of the outer wall of the insulating member 300 facing the interface member 200, and is embedded in the interface limiting groove 221 to limit the relative movement of the interface member 200 and the insulating member 300 along the first direction X.

[0070] In some embodiments, the first limiting protrusion ring 321 and the insulating member 300 are integrally formed.

[0071] In some embodiments, a plurality of interface limiting grooves 221 are provided, and the plurality of interface limiting grooves 221 are spaced apart along the first direction X. A plurality of first limiting convex rings 321 are provided, and the plurality of first limiting convex rings 321 are spaced apart along the first direction X, and each first limiting convex ring 321 is embedded in at least one interface limiting groove 221 .

[0072] In some embodiments, two interface limiting grooves 221 are provided, and the two interface limiting grooves 221 are spaced apart along the first direction X. Two first limiting convex rings 321 are provided, and the two first limiting convex rings 321 are spaced apart along the first direction X, one first limiting convex ring 321 is correspondingly embedded in one interface limiting groove 221, and the other first limiting convex ring 321 is correspondingly embedded in the other interface limiting groove 221.

[0073] In some embodiments, the third section 250 has an inner end surface facing the inside of the middle frame 100, and the third limiting portion 220 further includes an end surface buckle groove 222, which is simultaneously provided on the inner end surface of the third section 250 and the outer peripheral surface of the third section 250, and the end surface buckle groove 222 surrounding the plug-in hole 210 has an opening perpendicular to the first direction X and an opening facing the inside of the middle frame 100. The fourth limiting portion 320 further includes a second limiting convex ring 322, which is provided on the surface of the outer wall of the insulating member 300 facing the interface member 200, and is embedded in the end surface buckle groove 222 to limit the interface member 200 from being separated from the insulating member 300 in a direction close to the inside of the middle frame 100.

[0074] In some embodiments, the second limiting protrusion ring 322 and the insulating member 300 are integrally formed.

[0075] In some embodiments, the first section 230 has an outer end surface away from the inside of the middle frame 100, and the third limiting portion 220 further includes an end surface bevel groove 223, which is simultaneously provided on the outer end surface of the first section 230 and the outer peripheral surface of the first section 230, and surrounds the plug-in hole 210. The end surface bevel groove 223 has an outer chamfered bevel 2231, and the outer chamfered bevel 2231 gradually converges in a direction away from the middle frame 100, that is, the width of the end of the outer chamfered bevel 2231 away from the middle frame 100 along the second direction is smaller than the width of the end of the outer chamfered bevel 2231 close to the middle frame 100 along the second direction, and the thickness of the end of the outer chamfered bevel 2231 away from the middle frame 100 along the three directions is smaller than the thickness of the end of the outer chamfered bevel 2231 close to the middle frame 100 along the third direction. The fourth limiting portion 320 also includes a third limiting protrusion ring 323, which is arranged on the surface of the outer wall of the insulating component 300 facing the interface component 200, and the third limiting protrusion ring 323 is embedded in the end face bevel groove 223. The third limiting protrusion ring 323 has a limiting inclined surface 3231 inclined toward the inside of the middle frame 100, and the limiting inclined surface 3231 abuts against the outer chamfered inclined surface 2231 to limit the interface component 200 from detaching from the insulating component 300 in a direction away from the inside of the middle frame 100.

[0076] In some embodiments, the third limiting protrusion ring 323 and the insulating member 300 are integrally formed.

[0077] In some embodiments, the inclination angle of the limiting slope 3231 is equal to the inclination angle of the outer chamfered slope 2231 , and the limiting slope 3231 and the outer chamfered slope 2231 form an inverted slope to limit the interface component 200 from detaching from the insulating component 300 in a direction away from the interior of the middle frame 100 .

[0078] In some embodiments, the inclination angles of the limiting inclined surface 3231 and the outer chamfered inclined surface 2231 may be 30° to 60°. For example, the inclination angles of both are 45°.

[0079] The embodiment of the present application also provides a terminal device, which includes the shell structure 001 in any one of the above embodiments. Through the setting of the shell structure 001, the first limiting portion 140 of the terminal device is set on the inner wall surface of the interface hole 110, and the second limiting portion 310 is located on the surface of the inner wall surface of the insulating member 300 facing the interface hole 110. The two limiting portions work together to limit the relative movement of the insulating member 300 and the middle frame 100 along the first direction X, thereby improving the displacement caused by vibration or impact. The third limiting portion 220 is set on the outer wall surface of the interface member 200, and the fourth limiting portion 320 is located on the surface of the outer wall surface of the insulating member 300 facing the interface member 200. The coordinated use of these two limiting portions effectively limits the relative movement of the interface member 200 and the insulating member 300 along the first direction X, ensuring the stable connection of the interface member 200.

[0080] In some embodiments, the terminal device includes but is not limited to electronic products such as mobile phones and tablet computers.

[0081] Regarding the connection process between the interface and the middle frame 100, the related technology is to leave a welding platform on the end surface of the semi-finished metal interface during the machining process, weld the welding platform to the middle frame 100, and then inject the plastic part between the middle frame 100 and the metal interface, and finally remove the welding platform to insulate the metal interface from the middle frame 100. However, due to the complexity of the process, an additional welding process increases the manufacturing cost, and at the same time, the connection strength between the metal interface and the plastic part is still insufficient.

[0082] The embodiment of the present application further provides a method for processing the housing structure 001, which is used to process the housing structure 001 in one or more of the above embodiments. The processing method includes the following steps: S1. Positioning: providing a semi-finished middle frame 400, a semi-finished interface component 500, and a positioning jig 600, fixing the relative positions of the semi-finished middle frame 400 and the semi-finished interface component 500 by the positioning jig 600, so as to form a gap between the semi-finished interface component 500 and the interface hole 110; S2. Injection molding: providing insulating material, melting the insulating material, injecting and filling the gap between the interface semi-finished product 500 and the interface hole 110, and then cooling and molding to obtain an insulating semi-finished product 700, the insulating semi-finished product 700 isolating the middle frame semi-finished product 400 and the interface semi-finished product 500; S3. Finishing: Remove the positioning fixture 600 from the interface component semi-finished product 500 to obtain the shell structure 001 semi-finished product consisting of the middle frame semi-finished product 400, the interface component semi-finished product 500 and the insulating component semi-finished product 700, remove the excess material on the shell structure 001 semi-finished product to obtain the shell structure 001 finished product.

[0083] Figure 5 A schematic diagram of the overall structure of a semi-finished interface component 500 in an embodiment of the present application is shown.

[0084] See also Figure 5 In some embodiments, S1. The positioning step is specifically as follows: an interface hole 110 is formed on the middle frame semi-finished product 400, a plug-in hole 210 is formed on the interface component semi-finished product 500, a positioning jig 600 is at least partially extended into the plug-in hole 210, and the positioning jig 600 and the interface component semi-finished product 500 are fixed to each other, and then the positioning jig 600 and the interface component semi-finished product 500 are at least partially extended into the interface hole 110, and the positioning jig 600 and the middle frame semi-finished product 400 are fixed to each other, and a gap is formed between the interface component semi-finished product 500 and the interface hole 110; The interface component semi-finished product 500 includes an interface main body 510 and an interface fixing part 520 connected to each other. A plug-in hole 210 is provided on the interface main body 510. A processing allowance of 0.05 mm to 0.2 mm is reserved on the hole wall of the plug-in hole 210. An inner chamfered surface 211 is processed on the end face of the plug-in hole 210 away from the interface fixing part 520. A fixing hole 521 is provided on the interface fixing part 520. An interface limiting groove 221, an end face buckle groove 222 and an end face bevel groove 223 are provided on the outer peripheral surface of the interface main body 510.

[0085] Figure 6 A schematic diagram of the overall structure of a positioning fixture 600 in one embodiment of the present application is shown.

[0086] See also Figure 6 , a positioning jig 600 is provided, the positioning jig 600 includes a positioning portion 610, a transition portion 620, a centering portion 630 and a connecting portion 640 which are sequentially distributed along the first direction X, and the connecting portion 640 is located on the side of the positioning portion 610 close to the inside of the middle frame 100. A countersunk hole 650 extending along the first direction X is provided on the positioning jig 600, a first positioning surface 611 is processed on the side of the positioning portion 610 facing the connecting portion 640, and a centering bevel 631 is processed on the outer peripheral surface of the centering portion 630. Among them, the centering bevel 631 can be a molded A+ grade surface, which needs to be polished and polished. Along the first direction X, the projection contour of the connecting portion 640 is smaller than the projection contour of the plug-in hole 210.

[0087] Figure 7 A schematic diagram of the overall structure of a mid-frame semi-finished product 400 in one embodiment of the present application is shown.

[0088] See also Figure 7 A middle frame semi-finished product 400 is provided. The middle frame semi-finished product 400 includes a middle frame body 410 and a boss 420. The boss 420 is arranged on the outer side of the middle frame body 410. A second positioning surface 421 is processed on the side of the boss 420 away from the middle frame body 410. An interface hole 110 is provided on the middle frame body 410. A through hole 422 is provided on the boss 420. Along the first direction X, the projection contour of the interface hole 110 is located within the projection contour of the through hole 422. A middle frame limiting groove 141 and a material pulling hole 142 are processed on the hole wall of the interface hole 110. The middle frame limiting groove 141 is arranged around the interface hole 110. The number of the material pulling holes 142 is set to be multiple. The width direction of the middle frame semi-finished product 400 is the second direction Y. The multiple material pulling holes 142 are arranged at intervals along the second direction Y.

[0089] Among them, the three steps of providing the interface component semi-finished product 500, providing the positioning fixture 600, and providing the middle frame semi-finished product 400 are not in order and can be performed simultaneously.

[0090] Figure 8A schematic diagram of the assembly structure of an interface component semi-finished product 500, a positioning fixture 600, and a middle frame semi-finished product 400 in one embodiment of the present application is shown.

[0091] See also Figure 5 , Figure 6 , Figure 7 Combined with Figure 8 After providing the semi-finished interface component 500, providing the positioning fixture 600 and providing the semi-finished middle frame 400, the connecting portion 640 of the positioning fixture 600 is inserted into the plug-in hole 210 of the semi-finished interface component 500, and a bolt is passed through the countersunk hole 650 and threadedly connected to the fixing hole 521, thereby fixing the semi-finished interface component 500 and the positioning fixture 600. After the connecting portion 640 is inserted into the plug-in hole 210, the centering bevel 631 abuts against the inner chamfer bevel 211, so as to position the semi-finished interface component 500 along the second direction Y and the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0092] After the interface component semi-finished product 500 and the positioning fixture 600 are fixed, the connecting portion 640 and the interface component semi-finished product 500 are passed through the through hole 422 and extended into the interface hole 110, the positioning portion 610 is abutted against the boss 420, the transition portion 620 is located in the through hole 422, and a venting gap of 0.01mm to 0.02mm is reserved between the transition portion 620 and the hole wall of the through hole 422. The venting gap is used for venting during the injection molding step. Specifically, the venting gap is used for venting when the melted insulating component raw material is injected and fills the gap between the interface component semi-finished product 500 and the interface hole 100 during the injection molding step. At this time, the first positioning surface 611 and the second positioning surface 421 are in contact with each other to position the interface component semi-finished product 500 along the first direction X.

[0093] See also Figure 4 and Figure 8 In some embodiments, S2. The injection molding step is specifically as follows: fix the combined interface component semi-finished product 500, the positioning fixture 600 and the middle frame semi-finished product 400 in a mold with a sealed cavity, add the insulating component raw material particles into the hot barrel through a hopper, and the barrel is provided with a plunger or a screw driven by an injection cylinder, and the insulating component raw material particles are sent to the heating zone of the barrel, and the insulating component raw material particles are softened and heated to the required temperature in the heating zone. After the mold is closed, under the push of the plunger or the screw, the hot melt insulating component raw material flows from the injection gate and fills the sealed cavity. After cooling under pressure, a first limiting convex ring 321, a second limiting convex ring 322, a third limiting convex ring 323, a fixing convex ring 311 and a pulling column 312 are formed between the interface component semi-finished product 500 and the interface hole 110.

[0094] Fig. 9 A schematic diagram of the overall structure of a finished shell structure 001 in one embodiment of the present application is shown.

[0095] In some embodiments, S3. the finishing step is specifically: Remove the positioning jig 600 from the interface component semi-finished product 500; Remove the boss 420 and the insulating member semi-finished product 700 located in the via hole 422; Remove the interface fixing portion 520 and the insulating member semi-finished product 700 located on the surface of the interface fixing portion 520; Finishing the inner surface S1 of the middle frame body 410 to meet the size requirements of the inner part of the middle frame 100. The inner surface S1 includes the inner surface of the middle frame 100 and the surface where the end surface of the drawing hole 142 of the middle frame 100 is located; Finishing the outer surface S2 of the middle frame body 410 to meet the outline dimension requirements of the middle frame 100; Removing the reserved machining allowance of the hole wall of the plug-in hole 210; Processing a microphone hole 120 and a speaker hole 130; The finished shell structure 001 is obtained.

[0096] In some embodiments, in the finishing step, the semi-finished product of the shell structure 001 is milled by a CNC machine tool or a machining center.

[0097] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A housing structure, characterized in that: include: A middle frame, wherein the middle frame has an interface hole; An interface member, wherein the interface member has an insertion hole, and an extension direction of the insertion hole is a first direction; The interface member is at least partially located in the interface hole, and there is a gap between the interface member and the interface hole; an insulating member, the insulating member being disposed between the interface member and the interface hole, the insulating member filling the gap to isolate the middle frame from the interface member; and The shell structure also includes a first limiting portion, a second limiting portion, a third limiting portion and a fourth limiting portion. The first limiting portion is arranged on the inner wall surface of the interface hole, and the second limiting portion is arranged on the surface of the inner wall surface of the insulating part facing the interface hole. The first limiting portion and the second limiting portion cooperate to limit the relative movement of the insulating part and the middle frame along the first direction; the third limiting portion is arranged on the outer wall surface of the interface part, and the fourth limiting portion is arranged on the surface of the outer wall surface of the insulating part facing the interface part. The third limiting portion and the fourth limiting portion cooperate to limit the relative movement of the interface part and the insulating part along the first direction.

2. The housing structure according to claim 1, characterized in that: The interface member is a non-rotating body.

3. The housing structure according to claim 1, characterized in that: The interface component includes a first section, a second section and a third section distributed in sequence along the first direction, and the third section is located on the side of the second section facing the inside of the middle frame; the third limiting portion includes an interface limiting groove, and the interface limiting groove is arranged on the outer peripheral surface of the second section and surrounds the plug-in hole; the fourth limiting portion includes a first limiting convex ring, and the first limiting convex ring is embedded in the interface limiting groove to limit the relative movement of the interface component and the insulating component along the first direction.

4. The housing structure according to claim 3, characterized in that: The third section has an inner end surface facing the interior of the middle frame, and the third limiting portion also includes an end surface buckle groove, which is simultaneously arranged on the inner end surface and the outer peripheral surface of the third section, and the end surface buckle groove is arranged around the plug-in hole; the fourth limiting portion also includes a second limiting convex ring, which is embedded in the end surface buckle groove to limit the interface component from detaching from the insulating component in a direction close to the interior of the middle frame.

5. The housing structure according to claim 3, characterized in that: The first section has an outer end face away from the interior of the middle frame, and the third limiting portion also includes an end face bevel groove, which is simultaneously arranged on the outer end face and the outer peripheral surface of the first section, and the end face bevel groove is arranged around the plug-in hole, and the end face bevel groove has an outer chamfered inclined surface; the fourth limiting portion also includes a third limiting convex ring, and the third limiting convex ring is embedded in the end face bevel groove, and the third limiting convex ring has a limiting inclined surface inclined toward the interior of the middle frame, and the limiting inclined surface abuts against the outer chamfered inclined surface to limit the interface component from detaching from the insulating component in a direction away from the interior of the middle frame.

6. The housing structure according to claim 1, characterized in that: The first limiting portion includes a middle frame limiting groove, which is arranged around the interface hole; the second limiting portion includes a fixed convex ring, which is embedded in the middle frame limiting groove to limit the relative movement of the insulating member and the middle frame along the first direction.

7. The housing structure according to claim 1, characterized in that: The first limiting portion also includes a material pulling hole, which is arranged on the hole wall of the interface hole, and the central axis of the material pulling hole is arranged at an angle with the first direction; the second limiting portion also includes a material pulling column, which is arranged on the material pulling hole to limit the relative movement of the insulating part and the middle frame along the first direction.

8. The housing structure according to claim 7, characterized in that: There are multiple material pulling holes, the width direction of the middle frame is the second direction, and the multiple material pulling holes are spaced apart along the second direction. There are multiple material pulling columns, and the multiple material pulling columns are spaced apart along the second direction. The material pulling columns are arranged corresponding to the material pulling holes, and each of the material pulling columns is arranged at the corresponding material pulling hole.

9. A terminal device, characterized in that: The invention comprises a housing structure as claimed in any one of claims 1 to 8.

10. A method for processing a shell structure, used for processing the shell structure according to any one of claims 1 to 8, characterized in that: The processing method comprises the following steps: Positioning: providing a middle frame semi-finished product, an interface component semi-finished product and a positioning jig, and fixing the relative positions of the middle frame semi-finished product and the interface component semi-finished product by the positioning jig to form a gap between the interface component semi-finished product and the interface hole; Injection molding: providing insulating material, melting the insulating material, injecting and filling the gap between the interface semi-finished product and the interface hole, and then cooling and molding to obtain an insulating semi-finished product, which isolates the middle frame semi-finished product from the interface semi-finished product.

11. The processing method according to claim 10, characterized in that: In the positioning step, an interface hole is opened on the middle frame semi-finished product, a plug-in hole is opened on the interface component semi-finished product, the positioning jig is at least partially extended into the plug-in hole, and the positioning jig and the interface component semi-finished product are fixed to each other, the positioning jig and the interface component semi-finished product are at least partially extended into the interface hole, and the positioning jig and the middle frame semi-finished product are fixed to each other, and a gap is formed between the interface component semi-finished product and the interface hole.

12. The processing method according to claim 10, characterized in that: The processing method also includes a finishing step, which is arranged after the injection molding step. The finishing step includes: removing the positioning fixture from the interface component semi-finished product to obtain a shell structure semi-finished product composed of the middle frame semi-finished product, the interface component semi-finished product and the insulating component semi-finished product, and removing excess material on the shell structure semi-finished product to obtain a shell structure finished product.

13. The processing method according to claim 12, characterized in that: In the positioning step, the interface component semi-finished product includes an interface main body and an interface fixing part that are connected to each other, the plug-in hole is opened on the interface main body, and the fixing hole is opened on the interface fixing part; the positioning fixture includes a connecting part, a countersunk hole is opened on the connecting part, the connecting part is extended into the plug-in hole, and a bolt is used to pass through the countersunk hole and threadedly connected to the fixing hole.

14. The processing method according to claim 13, characterized in that: A processing allowance of 0.05 mm to 0.2 mm is reserved for the hole wall of the plug-in hole.

15. The processing method according to claim 14, characterized in that: The positioning fixture also includes a positioning portion, which is arranged on one side of the connecting portion; the middle frame semi-finished product includes a middle frame body and a boss, which is arranged on the outer side of the middle frame body, the interface hole is opened on the middle frame body, and a through hole is opened on the boss, after the connecting portion and the interface component semi-finished product pass through the through hole and extend into the interface hole, the positioning portion is abutted against the boss to position the interface component semi-finished product along the first direction.

16. The processing method according to claim 15, characterized in that: The positioning fixture also includes a transition portion, which is located between the positioning portion and the connecting portion. After the positioning portion is abutted against the boss, the transition portion is located in the via hole, and an exhaust gap of 0.01 mm to 0.02 mm is reserved between the transition portion and the hole wall of the via hole, and the exhaust gap is used for exhaust during the injection molding step.

17. The processing method according to claim 16, characterized in that: The positioning fixture also includes a centering portion, which is located between the transition portion and the connecting portion. A centering bevel is processed on the outer peripheral surface of the centering portion, and an inner chamfered bevel is processed on the end surface of the plug-in hole away from the interface fixing portion. After the connecting portion is extended into the plug-in hole, the centering bevel abuts against the inner chamfered bevel to position the semi-finished interface component along the second direction and the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

18. The processing method according to claim 10, characterized in that: In the injection molding step, a first limiting portion is provided on the inner wall surface of the interface hole, and a third limiting portion is provided on the outer wall surface of the interface main body. The melted insulating component raw material is injected into and fills the gap between the interface component semi-finished product and the interface hole. After cooling and molding, a second limiting portion cooperating with the first limiting portion and a fourth limiting portion cooperating with the third limiting portion are formed; the first limiting portion and the second limiting portion cooperate to limit the relative movement of the insulating component and the middle frame along the first direction, and the third limiting portion and the fourth limiting portion cooperate to limit the relative movement of the interface component and the insulating component along the first direction.

19. The processing method according to claim 15, characterized in that: In the finishing step, the positioning jig is removed from the interface component semi-finished product, and the boss, the interface fixing portion, the insulating component semi-finished product located in the via hole, and the insulating component semi-finished product located on the surface of the interface fixing portion are removed; Removing excess material from the middle frame body, and at the same time removing excess material from the semi-finished insulating component inside the middle frame body; The reserved machining allowance of the hole wall of the plug-in hole is removed.

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