CN207117711U - Bearing structure, housing unit and mobile terminal - Google Patents

Abstract

The utility model discloses a bearing structure. The bearing structure includes a base plate, an inner frame and an outer frame. The inner frame is fixedly connected with the base plate. The outer frame includes a body and a limiting portion protruding from the body, the body is fixedly connected to the edge of the substrate, and the inner frame is clamped between the limiting portion and the substrate. The utility model also discloses a shell assembly and a mobile terminal. In the carrying structure, the housing assembly and the mobile terminal, the base plate is fixedly connected to the inner frame, the base plate is fixedly connected to the outer frame, and the inner frame is clamped between the limit part and the base plate, the structure of the load-bearing mechanism is stable, and the base plate, the inner frame The frame and the outer frame can be formed separately, and the respective materials can be different. The performance of the load-bearing structure is better and it is beneficial to control the cost.

Description

Carrier structure, housing assembly and mobile terminal

technical field

The utility model relates to the technical field of electronic equipment, and more specifically, relates to a bearing structure, a shell assembly and a mobile terminal.

Background technique

The middle frame of the mobile phone is used as the installation carrier of the electronic components of the mobile phone, and provides protection for the mobile phone against falling and waterproof. When the middle frame of the mobile phone is produced, it is usually formed by die-casting. However, due to the inconsistent performance requirements of different parts of the middle frame, However, the material of the integrally formed middle frame is the same everywhere, and the overall performance of the middle frame is poor and is not conducive to cost control.

Utility model content

The implementation mode of the utility model provides a bearing structure and a mobile terminal.

The bearing structure of the utility model embodiment comprises:

Substrate;

an inner frame fixedly connected to the substrate; and

an outer frame, the outer frame includes a main body and a limiting portion protruding from the main body, the main body is fixedly connected to the edge position of the substrate, and the inner frame is clamped between the limiting portion and the between substrates.

In some embodiments, hot melt adhesive is provided between the inner frame and the substrate; and/or hot melt adhesive is provided between the body and the substrate.

In some embodiments, the material of the substrate is metal or alloy; and/or the material of the inner frame is metal or alloy; and/or the material of the outer frame is metal or alloy.

In some embodiments, the inner frame includes a plurality of side walls, the plurality of side walls enclose a receiving space, and at least two of the side walls are clamped between the limiting portion and the base plate .

In some embodiments, the side wall includes two opposite sub-side walls, the two sub-side walls are clamped by the limiting portion and the base plate, and positioning protrusions are formed on the sub-side walls The body includes a connecting surface connected to the substrate, the body includes a positioning groove opened on the connecting surface, and the positioning groove is matched with the positioning protrusion.

In some embodiments, the outer frame includes two side frames, and the two side frames are respectively arranged corresponding to the two sub-side walls.

In some embodiments, the inner frame includes a mounting protrusion formed on the side wall, and a mounting hole is formed on the mounting protrusion.

In some embodiments, the substrate is provided with a first positioning hole, and the outer frame is provided with a second positioning hole corresponding to the first positioning hole, and the carrying structure further includes a positioning member, and the positioning A component passes through the first positioning hole and penetrates into the second positioning hole, so as to limit the movement of the outer frame relative to the substrate along a thickness direction perpendicular to the substrate.

The housing assembly of the embodiment of the utility model includes:

shell; and

The bearing structure described in any one of the above embodiments, wherein the bearing structure is embedded in the housing.

The mobile terminal of the embodiment of the utility model includes:

the housing assembly described in the above embodiments; and

A power supply module arranged in the housing assembly.

In the carrying structure, the housing assembly and the mobile terminal according to the embodiments of the present utility model, the base plate is fixedly connected to the inner frame, the base plate is fixedly connected to the outer frame, and the inner frame is clamped between the limiting part and the base plate. The structure of the carrying mechanism Stable, and the base plate, inner frame and outer frame can be formed separately, and the respective materials can be different, the performance of the load-bearing structure is better and it is beneficial to control the cost.

Additional aspects and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a three-dimensional schematic diagram of a mobile terminal according to an embodiment of the present invention;

Fig. 2 is a three-dimensional schematic diagram of a housing assembly according to an embodiment of the present invention;

Fig. 3 is a three-dimensional schematic diagram of a load-carrying structure according to an embodiment of the present invention;

Fig. 4 is the enlarged schematic diagram of part IV in Fig. 3;

Fig. 5 is a three-dimensional exploded schematic view of the bearing structure of the embodiment of the present invention;

Fig. 6 is the enlarged schematic diagram of part VI in Fig. 5;

Fig. 7 is a schematic flow chart of a method for preparing a shell assembly according to an embodiment of the present invention;

Fig. 8 is a schematic flow chart of a method for preparing a shell assembly according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of the preparation of the inner frame of the embodiment of the present invention;

Fig. 10 is a schematic diagram of the preparation of the outer frame of the embodiment of the present invention.

Description of main component symbols:

Mobile terminal 1000, housing assembly 100, carrying structure 10, substrate 12, front 122, back 124, first positioning hole 126, inner frame 14, side wall 142, accommodation space 144, sub-side wall 146, positioning protrusion 148, Mounting protrusion 149, mounting hole 1492, outer frame 16, body 162, connecting surface 1622, limiting portion 164, positioning groove 166, side frame 168, hot melt adhesive 18, third positioning hole 182, positioning piece 19, shell Body 20.

Detailed ways

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings represent the same or similar elements or elements having the same or similar functions throughout.

In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, and are only used to explain the embodiments of the present invention, and should not be construed as limitations on the present invention.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

Referring to FIG. 1 , a mobile terminal 1000 according to an embodiment of the present invention includes a housing assembly 100 and a power supply module (not shown in the figure), and the power supply module is disposed in the housing assembly 100 .

As shown in FIG. 2 , the housing assembly 100 includes a housing 20 and a carrying structure 10 . The carrier structure 10 is embedded in a housing 20 .

Referring to FIG. 3 and FIG. 4 , the carrying structure 10 includes a base plate 12 , an inner frame 14 and an outer frame 16 . The inner frame 14 is fixedly connected with the base plate 12 . The outer frame 16 includes a body 162 and a limiting portion 164 . The body 162 is fixedly connected to the edge of the substrate 12 . The limiting portion 164 protrudes from the body 162 , and the inner frame 14 is clamped between the limiting portion 164 and the base plate 12 .

In the mobile terminal 1000 according to the embodiment of the present utility model, the substrate 12 is fixedly connected to the inner frame 14, the substrate 12 is fixedly connected to the outer frame 16, and the inner frame 14 is clamped between the limiting portion 164 and the substrate 12, and the carrying structure 10 The structure is stable, and the base plate 12, the inner frame 14 and the outer frame 16 can be formed separately, and the respective materials can be different. The performance of the carrying structure 10 is better and it is beneficial to control the cost.

Specifically, referring to FIG. 1 , a mobile terminal 1000 includes a housing assembly 100 and a power supply module. The mobile terminal 1000 may be a mobile phone, a tablet computer, a smart watch, and the like. The housing assembly 100 can be used as an integral part of the casing of the mobile terminal 1000 , for example, the casing assembly 100 is the middle frame of the mobile terminal 1000 , and the casing assembly 100 together with the front casing and the rear casing constitute the casing of the mobile terminal 1000 . The housing assembly 100 can be used as an installation carrier for functional elements of the mobile terminal 1000. The functional elements can include a camera, a speaker, a display screen, a power supply module, etc., and the housing assembly 100 can provide the functional elements with protection against falling, dust, and water. . The power supply module may be a battery, a power converter and other modules arranged in the housing 20 , and the power supply module is used to provide electric energy for the operation of the mobile terminal 1000 . The embodiment of the present utility model is described by taking the mobile terminal 1000 as a mobile phone as an example. It can be understood that the specific form of the mobile terminal 1000 may be other, which is not limited here.

Referring to FIG. 2 , the shell assembly 100 includes a shell 20 and a carrying structure 10 , and the carrying structure 10 is embedded in the shell 20 . The casing assembly 100 can be manufactured by in-mold injection molding. Specifically, the carrying structure 10 can be assembled first, then the carrying structure 10 is placed in the mold, and then the casing 20 is formed by injection molding, so that the carrying structure 10 is embedded in the casing. 20 in. In this way, the carrying structure 10 will not come out of the casing 20, and the structure of the casing assembly 100 is stable. In actual use, a decorative ring or the like may be provided on the side edge of the housing assembly 100 to improve the aesthetics of the housing assembly 100 .

Referring to FIG. 3 and FIG. 4 , the carrying structure 10 includes a base plate 12 , an inner frame 14 and an outer frame 16 . The substrate 12 can be used as the installation reference of the functional elements of the mobile terminal 1000. Therefore, the flatness of the substrate 12 is generally required to be high. The substrate 12 in the embodiment of the present utility model can be formed independently without the substrate 12 and the inner frame 14. Integral die-casting with the outer frame 16, etc., the production of the substrate 12 will not be affected by the production of the inner frame 14 and the outer frame 16, and the flatness of the substrate 12 is relatively high. The substrate 12 may be in the form of a flat plate, and the substrate 12 includes a front 122 and a back 124 opposite to each other. Please refer to FIG. 1 , in the embodiment of the present utility model, the front 122 can be used as the installation reference of the display screen of the mobile terminal 1000 to ensure that the display screen will not tilt relative to the housing assembly 100, and the back 124 can be used as the main screen of the mobile terminal 1000. Based on the installation of the circuit board, the substrate 12 can be made of a material with a high thermal conductivity, so as to better conduct the heat generated by the mobile terminal 1000 to the housing assembly 100 and further to the outside.

Referring to FIG. 6 , the inner frame 14 can be disposed on the back surface 124 of the substrate 12 , and the inner frame 14 is clamped between the back surface 124 and the limiting portion 164 , and the inner frame 14 can prevent the substrate 12 from being deformed. The inner frame 14 and the base plate 12 can be fixedly connected by gluing, welding, screwing and the like.

The outer frame 16 is arranged on the edge of the substrate 12, and the outer frame 16 and the substrate 12 form an installation space, which can be used to install the functional elements of the mobile terminal 1000, and the outer frame 16 can protect the substrate 12 and the functional elements, for example, when the mobile terminal 1000 is dropped. Absorbs shock from the outside when falling. The outer frame 16 can be in a closed ring shape, and the annular outer frame 16 can be arranged around the periphery of the substrate 12; . Please refer to FIG. 5 and FIG. 6 , the outer frame 16 includes a body 162 and a limiting portion 164 . The body 162 is fixedly connected to the edge of the substrate 12. The body 162 and the substrate 12 can be fixedly connected by glue, welding, screwing, etc., and the stopper 164 protrudes from the body 162. Specifically, the stopper 164 protrudes from the body 162. Protruding towards the middle of the base plate 12 , the limiting portion 164 clamps the inner frame 14 together with the base plate 12 to limit the movement of the inner frame 14 along a direction perpendicular to the back surface 124 . Further, in the embodiment of the present invention, the inner frame 14 is also clamped in the body 162 of the two side frames 168 to limit the movement of the inner frame 14 in a direction parallel to the back surface 124 .

Please refer to FIG. 5 and FIG. 6 , in some embodiments, a hot melt adhesive 18 is disposed between the inner frame 14 and the substrate 12 . A hot melt adhesive 18 is disposed between the body 162 and the substrate 12 .

Specifically, the inner frame 14 and the substrate 12 may have been bonded together by hot melt adhesive 18 , and the body 162 and the substrate 12 may also have been bonded together by hot melt adhesive 18 . The hot-melt adhesive 18 may not bond the inner frame 14 and the substrate 12, the hot-melt adhesive 18 may not bond the body 162 and the substrate 12, and the hot-melt adhesive 18 is only arranged between the inner frame 14 and the substrate 12 when it is in a solid state. between the body 162 and the substrate 12, and then when it is necessary to bond the inner frame 14 and the substrate 12, and/or bond the body 162 and the substrate 12, then heat the hot melt adhesive 18, and the hot melt adhesive 18 will melt And after curing, the inner frame 14 and the substrate 12 , and the body 162 and the substrate 12 are bonded together.

Please refer to FIG. 5 and FIG. 6 , in some embodiments, the material of the substrate 12 is metal or alloy. The material of the inner frame 14 is metal or alloy. The material of the outer frame 16 is metal or alloy.

The thermal conductivity of metal or alloy is high, and the carrying structure 10 is easy to transfer the heat generated by the functional components of the mobile terminal 1000 to the outside, and the carrying structure 10 has high strength. In one example, the base plate 12 can be made of stainless steel or aluminum alloy, the inner frame 14 can be made of aluminum, and the outer frame 16 can be made of aluminum or aluminum alloy. The load-bearing structure 10 has relatively high strength and light weight. In addition, due to the high heat conduction system of metal or alloy, when the hot melt adhesive 18 needs to be heated, the substrate 12, the inner frame 14 and the outer frame 16 can be heated, and the heat is transferred to the hot melt adhesive 18 to melt the hot melt adhesive 18.

Please refer to FIG. 5 and FIG. 6 , in some embodiments, the inner frame 14 includes a plurality of side walls 142 , the plurality of side walls 142 enclose a receiving space 144 , and at least two side walls 142 are clamped in the limiting portion 164 between the substrate 12.

The inner frame 14 can be a hollow structure, and a plurality of side walls 142 connect end to end to form a storage space 144. The storage space 144 can be used to accommodate a power supply module, such as a battery, which is fixed by the multiple side walls 142 and is not easily damaged. . In the embodiment shown in Fig. 5 and Fig. 6, the inner frame 14 is generally square, and the overall width of the inner frame 14 is slightly smaller than the width of the base plate 12, so that the body 162 is fixed on the edge of the base plate 12, and the limiting part 164 is easy to clamp. Hold inner frame 14. At least two side walls 142 are clamped between the limiting portion 164 and the base plate 12, specifically, at least two opposite side walls 142 may be clamped between the limiting portion 164 and the base plate 12, so that the inner The position of the frame 14 is relatively stable, and it is difficult to shift.

Referring to FIG. 5 and FIG. 6 , in some embodiments, the sidewall 142 includes two opposite sub-sidewalls 146 , and the two sub-sidewalls 146 are clamped by the limiting portion 164 and the base plate 12 . A positioning protrusion 148 is formed on the sub-sidewall 146 . The body 162 includes a connection surface 1622 connected to the substrate 12 , the body 162 includes a positioning groove 166 defined on the connection surface 1622 , and the positioning groove 166 cooperates with the positioning protrusion 148 .

Specifically, the connection surface 1622 can be connected to the back surface 124 of the substrate 12 through hot melt adhesive 18. When installing the bearing structure 10, the inner frame 14 can be installed on the back surface 124 first, and then the outer frame 16 can be installed on the back surface 124. The quasi-positioning groove 166 is installed with the positioning protrusion 148 so that the positioning groove 166 cooperates with the positioning protrusion 148 . Specifically, the connection surface 1622 may be a plane, and the positioning protrusion 148 extends into the positioning groove 166 along a direction perpendicular to the connection surface 1622 .

In the embodiment of the present invention, one side of the positioning protrusion 148 forms a protrusion, which is spaced from the sub-side wall 146 and forms a depression between the protrusion and the sub-side wall 146, and the shape of the positioning groove 166 is consistent with that of the sub-side wall 146. The shape of the positioning protrusion 148 is corresponding, that is, the outer frame 16 is formed with a groove corresponding to the protrusion and a protrusion corresponding to the depression at the positioning groove 166 . When the positioning protrusion 148 was installed in the positioning groove 166, the protrusion of the positioning protrusion 148 was accommodated in the groove of the outer frame 16, and the protrusion of the outer frame 16 was accommodated in the depression of the positioning protrusion 148. At this time, the positioning The projections of the projection 148 and the projections of the outer frame 16 engage each other to limit the movement of the positioning projection 148 or the outer frame 16 along the direction parallel to the connecting surface 1622, and the positioning projection 14 can only move from the direction perpendicular to the connecting surface 1622. Detach from the positioning groove 166.

Please refer to FIG. 5 and FIG. 6 , in some embodiments, the outer frame 16 includes two side frames 168 , and the two side frames 168 are respectively arranged corresponding to the two sub-side walls 146 .

The base plate 12 can be rectangular, and two side frames 168 can be respectively fixed on two longer edges of the base plate 12 to strengthen the strength of the base plate 12, and each side frame 168 is used to clamp a corresponding sub-side wall 146, The two side frames 168 are respectively fixedly connected to the base plate 12 .

Referring to FIGS. 5 and 6 , in some embodiments, the inner frame 14 includes a mounting protrusion 149 formed on the side wall 142 . A mounting hole 1492 is formed on the mounting protrusion 149 .

When a circuit board or functional element needs to be installed in the carrying structure 10, the circuit board or functional element can be fixedly connected to the mounting protrusion 149, specifically, the circuit board or functional element can be passed through the circuit board or functional element by a screw and then connected to the mounting hole 1492. The mounting protrusions 149 can be integrally formed with the multiple side walls 142 , for example, by extrusion. The mounting holes 1492 can be formed by etching, mechanical drilling, etc., or can also be formed together when the inner frame 14 is formed by extrusion.

Please refer to FIG. 5 and FIG. 6 , in some embodiments, the substrate 12 defines a first positioning hole 126 . A second positioning hole (not shown) is defined on the outer frame 16 , and the second positioning hole corresponds to the first positioning hole 126 . The carrying structure 10 further includes a positioning piece 19 , which passes through the first positioning hole 126 and penetrates into the second positioning hole, so as to limit the movement of the outer frame 16 relative to the substrate 12 in a direction perpendicular to the thickness of the substrate 12 .

The hot melt adhesive 18 may be provided with a third positioning hole 182 corresponding to the first positioning hole 126 , and the positioning member 19 passes through the third positioning hole 182 to limit the movement of the hot melt adhesive 18 . The positioning piece 19 may be a positioning pin, and the positioning piece 19 may not be fixedly connected to the outer frame 16 and the base plate 12, that is, the positioning piece 19 only plays a role of positioning, but not a connection. The positioning member 19 restricts the movement of the outer frame 16 relative to the substrate 12 in a direction perpendicular to the thickness of the substrate 12 . The positioning piece 19 can also be a screw, and the positioning piece 19 is fixedly connected to the outer frame 16 and the base plate 12 to limit the movement of the outer frame 16 relative to the base plate 12 . At this time, the positioning member 19 not only plays a role of positioning, but also plays a role of connection.

Please refer to Fig. 7, the preparation method of the housing assembly 100 according to the embodiment of the present invention includes steps:

S1: Prepare the carrying structure 10, the carrying structure 10 includes a substrate 12, an inner frame 14 and an outer frame 16, a hot melt adhesive 18 is arranged between the substrate 12 and the inner frame 14, and a hot melt adhesive is arranged between the substrate 12 and the outer frame 16 18;

S2: providing a mold, the mold is formed with a mold cavity;

S3: fixing the load-bearing structure 10 in the mold cavity; and

S4: Fill the mold cavity with molten material to form the casing 20, the carrying structure 10 is embedded in the casing 20, and the hot melt adhesive 18 is melted under the heat of the molten material for bonding the substrate 12 and the interior Frame 14, and substrate 12 and outer frame 16.

In the process of preparing the shell assembly 100, the heat of the molten material itself is used to heat the solid hot melt adhesive 18, and the solid hot melt adhesive 18 is heated into a gel state, combined with the pressure applied by the mold itself to the bearing structure 10, the hot melt adhesive After 18 is cured, the substrate 12 and the inner frame 14, and the substrate 12 and the outer frame 16 are fixedly connected.

The material of the substrate 12, the inner frame 14 and the outer frame 16 can be a metal or an alloy with a higher thermal conductivity system, so that the heat of the molten material can be transferred to the hot melt adhesive through the substrate 12, the inner frame 14 and the outer frame 16 quickly 18 to melt the hot melt adhesive 18. When the load-bearing structure 10 is fixed in the mold cavity, the mold provides a certain pressure to the load-bearing structure 10, and the load-bearing structure 10 is fixed in the mold, and the load-bearing structure 10 will not shift. The molten material can be non-metal such as molten plastic, or metal such as molten aluminum. The molten material is cooled and solidified to form the shell 20, and the shell 20 partially wraps the load-bearing structure 10, so that the shell assembly 100 stable structure.

Please combine with 8, in some embodiments, step S1 includes:

S11: providing the substrate 12;

S12: installing hot melt adhesive 18 on the substrate 12;

S13: install the inner frame 14 on the substrate 12, so that the hot melt adhesive 18 is located between the substrate 12 and the inner frame 14; and

S14 : installing the outer frame 16 on the substrate 12 , so that the hot melt adhesive 18 is located between the substrate 12 and the outer frame 16 .

The base plate 12 , the inner frame 14 and the outer frame 16 can be formed separately, and the respective materials can be selected according to requirements, so as to ensure the performance of the load-bearing structure 10 and facilitate cost control. Further, the base plate 12, the hot melt adhesive 18, the inner frame 14 and the outer frame 16 can also be pre-fixed by the positioning member 19, so as to place the carrying structure 10 in the mold cavity as a whole, and the base plate 12, the hot melt adhesive 18, The relative positions of the inner frame 14 and the outer frame 16 will not shift.

Please refer to FIG. 9 and FIG. 10 , in some embodiments, the inner frame 14 is made by extrusion molding process. The outer frame 16 is made by extrusion molding process.

Specifically, the material of the inner frame 14 can be aluminum or aluminum alloy, so as to facilitate extrusion molding, the long frame-shaped inner frame blank 14a can be extruded first, and then the inner frame blank 14a can be cut to obtain the inner frame 14 . The material of the outer frame 16 can also be aluminum or aluminum alloy, and the outer frame blank 16a can be extruded first, and then the outer frame blank 16a can be cut to obtain the outer frame 16, and the above-mentioned positioning groove can also be milled on the outer frame 16 166 etc.

In the description of this specification, references to the terms "certain embodiments," "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples" To describe means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of said features. In the description of the present utility model, "plurality" means at least two, such as two, three, unless otherwise specifically defined.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Changes, modifications, substitutions and variations can be made to the above-described embodiments, and the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A bearing structure, characterized in that, comprising: Substrate; an inner frame fixedly connected to the substrate; and an outer frame, the outer frame includes a main body and a limiting portion protruding from the main body, the main body is fixedly connected to the edge position of the substrate, and the inner frame is clamped between the limiting portion and the between substrates. 2 . The bearing structure according to claim 1 , wherein hot melt adhesive is provided between the inner frame and the substrate; and/or hot melt adhesive is provided between the main body and the substrate. 3 . 3. The bearing structure according to claim 1 or 2, characterized in that, the material of the substrate is metal or alloy; and/or the material of the inner frame is metal or alloy; and/or the material of the outer frame The material is metal or alloy. 4. The bearing structure according to claim 1, wherein the inner frame comprises a plurality of side walls, the plurality of side walls enclose a receiving space, and at least two of the side walls are clamped in the Between the limiting part and the substrate. 5. The bearing structure according to claim 4, wherein the side wall comprises two opposite sub-side walls, and the two sub-side walls are clamped by the limiting portion and the base plate, so A positioning protrusion is formed on the side wall of the sub-body, the body includes a connecting surface connected to the substrate, the body includes a positioning groove opened on the connecting surface, and the positioning groove and the positioning protrusion cooperate. 6 . The bearing structure according to claim 5 , wherein the outer frame includes two side frames, and the two side frames are respectively arranged corresponding to the two sub-side walls. 7 . 7. The bearing structure according to claim 4, wherein the inner frame comprises a mounting protrusion formed on the side wall, and a mounting hole is formed on the mounting protrusion. 8. The carrying structure according to claim 1, wherein the substrate is provided with a first positioning hole, and the outer frame is provided with a second positioning hole corresponding to the first positioning hole, and the carrying structure The structure further includes a positioning piece, the positioning piece passes through the first positioning hole and penetrates into the second positioning hole, so as to limit the movement of the outer frame relative to the substrate along a thickness direction perpendicular to the substrate. 9. A housing assembly, characterized in that it comprises: shell; and The load-bearing structure according to any one of claims 1-8, wherein the load-bearing structure is embedded in the housing. 10. A mobile terminal, characterized in that, comprising: The housing assembly of claim 9; and A power supply module arranged in the housing assembly.