A decoration assembly for a back plate of a mobile terminal and a mobile terminal

Abstract

The disclosure discloses a decoration assembly for a mobile terminal back plate and a mobile terminal, the decoration assembly comprising: a first decoration piece and a second decoration piece are sequentially stacked in the thickness direction of the mobile terminal, a circumferential outer side surface of the first decoration piece is provided with a first step portion, a circumferential inner side of the second decoration piece is provided with a second step portion, the first step portion and the second step portion are fixedly matched, and the second decoration piece is at least partially arranged on the circumferential outer side of the first decoration piece; and the first decoration piece and the second decoration piece are sequentially stacked on the surface of the back plate, and the outer peripheral portion of the second decoration piece away from the back plate forms an inclined surface inclined to the surface of the back plate. According to the decoration assembly of the disclosure, the first decoration piece and the second decoration piece are arranged in a stacked manner, the first decoration piece and the second decoration piece are respectively provided with step portions, and the first decoration piece and the second decoration piece are matched with each other by means of the step portions, so that the sealing effect of the mobile terminal can be enhanced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to the technical field of electronic devices. More particularly, the present disclosure relates to a decoration assembly for a back plate of a mobile terminal and a mobile terminal. BACKGROUND

[0002] In a common mobile terminal such as a mobile phone, a tablet computer, etc., a camera assembly or the like is often used for information interaction with the outside world. For such an assembly, it usually includes a relatively precise interaction execution module or mechanism, such as a high-definition lens of a camera, various flashlights, a ranging sensor, etc. Such a module or mechanism often needs to work in an interference-free environment and is exposed to the outside of the device to directly interact with the outside world. In the existing device, the protection of such a module or mechanism is only to surround it with a single protective shell, which is difficult to provide good sealing protection for the module or mechanism with high precision.

[0003] Therefore, there is an urgent need to provide a decoration assembly for a back plate of a mobile terminal to improve the sealing protection effect of the internal assembly. CONTENT OF THE INVENTION

[0004] In order to at least solve one or more technical problems as mentioned above, the present disclosure proposes, in various aspects, a decoration assembly for a back plate of a mobile terminal and a mobile terminal.

[0005] In a first aspect, the present disclosure provides a decoration assembly for a back plate of a mobile terminal, comprising: a first decoration piece and a second decoration piece sequentially stacked in a thickness direction of the mobile terminal, a circumferential outer side surface of the first decoration piece is provided with a first step portion, a circumferential inner side of the second decoration piece is provided with a second step portion, the first step portion and the second step portion are fixedly matched, and the second decoration piece is at least partially arranged on the circumferential outer side of the first decoration piece; and the first decoration piece and the second decoration piece are sequentially stacked on a surface of the back plate, and an outer peripheral portion of the second decoration piece away from the back plate forms an inclined surface inclined to the surface of the back plate.

[0006] In some embodiments, the second decoration piece includes an upper connecting plate fixedly connected with the first decoration piece and a lower connecting plate fixedly connected with the back plate, wherein the upper connecting plate is fixedly connected with the lower connecting plate, a circumferential outer side of the upper connecting plate has a first inclined surface, the lower connecting plate has a second inclined surface, the first inclined surface and the second inclined surface are adjacent and spliced into an outer inclined surface.

[0007] In some embodiments, a channel is arranged between the first decoration piece and the second decoration piece, the channel communicates an inner side and an outer side of the decoration assembly, an opening of the channel at the outer side is adjacent to the outer inclined surface, and an orientation of the opening is perpendicular to a thickness direction of a plate body of the upper connecting plate.

[0008] In some embodiments, the first decorative piece has a first inner tangent surface radially outward and a second plate surface axially toward the second decorative piece, the second decorative piece has a second inner tangent surface radially inward and a third stepped surface axially toward the first decorative piece, the first inner tangent surface is opposite to the second inner tangent surface, and the second plate surface is opposite to the third stepped surface in the stacking direction of the first decorative piece and the second decorative piece.

[0009] In some embodiments, the upper connecting plate has a third inner tangent surface radially outward along the plate surface and a third positioning surface perpendicular to the plate surface toward the lower connecting plate, the lower connecting plate has a fourth inner tangent surface radially inward along the plate surface and a fourth positioning surface perpendicular to the plate surface toward the upper connecting plate, the third inner tangent surface is opposite to the fourth inner tangent surface, and the third positioning surface is opposite to the fourth positioning surface in the direction perpendicular to the plate surface.

[0010] In some embodiments, the mounting seat is arranged on the side of the back plate away from the second decorative piece, the lower connecting plate has a lower adhesive portion on one side thereof for bonding with the mounting seat, and the back plate has a back plate adhesive portion on one side thereof for bonding with the back plate.

[0011] In some embodiments, the third decorative piece is fixedly arranged in the first outer accommodating groove of the first decorative piece.

[0012] In some embodiments, the first stepped portion is arranged apart from the second decorative piece in the thickness direction of the first decorative piece.

[0013] In some embodiments, the lower connecting plate is a transparent shell, and the upper connecting plate is a translucent or opaque shell; or the upper connecting plate is a transparent shell, and the lower connecting plate is a translucent or opaque shell.

[0014] In some embodiments, the mobile terminal further comprises a lamp strip, and the transparent portion of the upper connecting plate and / or the lower connecting plate at least partially overlaps the lamp strip in the thickness direction of the upper connecting plate. In some embodiments, the outer side of the plate surface of the upper connecting plate is provided with an upper arc surface, and the outer side of the plate surface of the lower connecting plate is provided with a lower arc surface located at the outer periphery of the upper arc surface, the upper arc surface and the lower arc surface have different radii of curvature.

[0015] In some embodiments, the mobile terminal further comprises a coil assembly, the decorative assembly and the coil assembly at least partially overlap in the thickness direction of the back plate, the first decorative piece comprises a metal portion, and the coil assembly is arranged apart from the metal portion of the first decorative piece in the stacking direction of the decorative assembly and the coil assembly, or the second decorative piece comprises a metal portion, and the coil assembly is arranged apart from the metal portion of the second decorative piece in the stacking direction.

[0016] In a second aspect, the disclosure provides a mobile terminal including the decoration assembly according to the first aspect and the plurality of embodiments.

[0017] In some embodiments, further comprising a coil assembly at least partially overlapping the first decoration piece or the second decoration piece along a stacking direction of the first decoration piece and the second decoration piece; the first decoration piece includes a metal portion, the coil assembly is disposed staggered to the metal portion of the first decoration piece along the stacking direction, or the second decoration piece includes a metal portion, the coil assembly is disposed staggered to the metal portion of the second decoration piece along the stacking direction.

[0018] By the decoration assembly provided above, the embodiments of the disclosure can enhance the sealing effect of the mobile terminal by disposing the first decoration piece and the second decoration piece stacked with each other, and making the first decoration piece and the second decoration piece respectively have the step portion, so that the first decoration piece and the second decoration piece are matched with each other by means of the step portion. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects, features and advantages of the exemplary embodiments of the disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, which illustrate, by way of example, several embodiments of the disclosure. In the drawings, like reference numerals refer to like elements, and the various elements across the several figures are not necessarily drawn to scale, wherein:

[0020] Figure 1 An example perspective view of a decoration assembly of some embodiments of the disclosure is shown;

[0021] Figure 2 An exploded view of a decoration assembly of some embodiments of the disclosure is shown;

[0022] Figure 3 An example cross-sectional view of a decoration assembly of some embodiments of the disclosure is shown;

[0023] Figure 4 An example cross-sectional view of a decoration assembly of some embodiments of the disclosure is shown;

[0024] Figure 5 An example cross-sectional view of a decoration assembly of some embodiments of the disclosure is shown;

[0025] Figure 6 An example perspective view of a mobile terminal of some embodiments of the disclosure is shown;

[0026] Figure 7 An example top view of a mobile terminal of some embodiments of the disclosure is shown;

[0027] Figure 8 An example cross-sectional view of a mobile terminal of some embodiments of the disclosure is shown; Figure 7 An enlarged view of part A in FIG. 6A is shown;

[0028] Figure 9 A partial enlarged view of a sealing group part on a back plate in another embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of, rather than all of, the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure.

[0030] It should be understood that the terms “comprise” and “include” used in the specification and claims of the present disclosure indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0031] It should also be understood that the terms used in the specification of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. As used in the specification and claims of the present disclosure, the singular forms “a,” “an,” and “the” are intended to include the plural forms, unless the context clearly indicates otherwise. It should be further understood that the term “and / or” used in the specification and claims of the present disclosure means any combination of one or more of the associated listed items and all possible combinations thereof, and includes these combinations.

[0032] As used in the specification and claims of this document, the term “if’ can be interpreted as meaning “when” or “once” or “in response to a determination” or “in response to a detection” depending on the context. Similarly, the phrase “if determined” or “if detected [the described condition or event]” can be interpreted as meaning “once determined” or “in response to a determination” or “once detected [the described condition or event]” or “in response to a detection [the described condition or event]” depending on the context.

[0033] Therefore, the embodiments of the present disclosure provide a decoration assembly, which can enhance the sealing effect of a mobile terminal by arranging a first decoration piece and a second decoration piece in a stacked manner, and making the first decoration piece and the second decoration piece have a stepped portion respectively, and making the first decoration piece and the second decoration piece cooperate with each other by means of the stepped portion.

[0034] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. For the convenience of understanding, the side of the back plate facing the first decorative piece is defined as the upper side, and the side of the back plate facing away from the first decorative piece is defined as the lower side. The orientation of other components is described below based on this. It should be understood by those skilled in the art that the orientation description herein is only an exemplary description and does not constitute a limitation on the actual structure of the embodiments of the present disclosure.

[0035] Referring to Figure 1 and Figure 2 , Figure 1 FIG. 1 shows an exemplary perspective view of a decorative assembly according to some embodiments of the present disclosure, Figure 2 FIG. 2 shows an exploded view of a decorative assembly according to some embodiments of the present disclosure, wherein the back plate of the mobile terminal is shown in dashed lines. In some embodiments, the decorative assembly 100 includes a first decorative piece 10 and a second decorative piece 20 stacked on each other, with the first decorative piece 10 stacked on the upper side of the second decorative piece 20, and the second decorative piece 20 further stacked on the upper side of the back plate 30. The back plate 30 is an external housing of a mobile terminal such as a mobile phone, a headset, a headset case, a tablet computer, etc.

[0036] The first decorative piece 10 includes a first plate body in the shape of a generally plate, which has three exposure holes penetrating through the plate, namely a first exposure hole 101, a second exposure hole 102, and a third exposure hole 103. The three exposure holes are used to align with the interaction parts of the interaction components of the mobile terminal, such as the lens of the camera assembly, so that the interaction components inside the mobile terminal that need to interact with the outside or obtain information from the outside can be exposed through the exposure holes and interact with the outside. The second decorative piece 20 includes a second plate body, which has an upper accommodating groove 208 formed by a recess on the upper surface of the second plate body. The bottom surface of the upper accommodating groove 208 is further provided with three middle openings penetrating through the plate, namely a first opening, a second opening, and a third opening. The first decorative piece 10 is at least partially inserted into the upper accommodating groove 208 while being arranged on the upper side of the second decorative piece 20, and the circumferential outer side of the first decorative piece 10 is at least partially matched with the inner wall shape of the upper accommodating groove 208. In addition, the upper side of the second plate body further has an outer side slope 210, which gradually inclines towards the back plate 30 along the radial direction from the radial inner side to the radial outer side, so that the thickness of the second plate body in the axial direction gradually decreases from the radial center to the radial outer side. Thus, the outer side slope 210 of the circumferential outer side of the second plate body and the exposure holes of the upper first decorative piece 10 form a shape similar to a volcanic crater.

[0037] Specifically, referring to Figure 2 and Figure 3 , Figure 3An exemplary sectional view of the decorative assembly is shown. In this embodiment, the first plate body of the first decorative piece 10 is substantially a long strip-shaped plate having opposite first and second plate faces 111 and 114. The two ends along the length direction of the first decorative piece 10 are formed with semi-arc-shaped outer contours, and three exposure holes are arranged along the length direction of the first plate body and penetrate the plate faces of the first plate body. Preferably, the two exposure holes, i.e. the first and third exposure holes 101 and 103, near the two ends of the first plate body along the length direction are arranged concentrically with the semi-arc-shaped contours of the two ends of the first plate body. The first decorative piece 10 further has a first stepped portion 110 protruding outwardly along the outer edge of the first plate face 111 of the first decorative piece 10, which is formed on the side of the first plate body near the first plate face 111 along the plate thickness direction of the first plate body. The first stepped portion 110 has opposite first and second stepped faces along the thickness direction thereof, the first stepped face is coplanar with the first plate face 111 of the first decorative piece 10, and the second stepped face 112 is between the first and second plate faces 111 and 114.

[0038] Meanwhile, the second plate body of the second decorative piece 20 includes opposite third and fourth plate faces 2101 and 2102 along the through direction of the central opening, and further has a second stepped portion 212 protruding inwardly and formed adjacent to the circumferential inner side of the central opening. The second stepped portion 212 has opposite third and fourth stepped faces along the plate thickness direction of the second plate body, the fourth stepped face is coplanar with the fourth plate face 2102, and the third stepped face 214 is between the third and fourth plate faces 2101 and 2102.

[0039] The first decorative piece 10 and the second decorative piece 20 can be buckled relative to each other and fixedly connected with the back plate 30 along the thickness direction of the back plate 30. Specifically, the first plate body of the first decorative piece 10 and the second plate body of the second decorative piece 20 are arranged in overlap along the respective thickness directions, and the lower part of the first plate body extends into the inner side of the upper accommodating groove 208 of the second plate body, the second stepped face 112 of the first stepped portion 110 is opposite to the third plate face 2101 of the second plate body along the above-mentioned thickness direction, and the second plate face 114 of the first plate body is opposite to the third stepped face 214 of the second stepped portion 212 along the thickness direction. The second plate face 114 and the third stepped face 214 are provided with a decorative piece adhesive portion 501, which is a glue or other adhesive material capable of fixedly connecting the first decorative piece 10 and the second decorative piece 20 relative to each other. The decorative piece adhesive portion 501 is substantially formed in a sheet shape, one side of which is adhered to the second plate face 114 and the other side of which is adhered to the third stepped face 214. In this way, the first decorative piece 10 and the second decorative piece 20 can be buckled relative to each other and fixedly connected with each other.

[0040] Again referring to Figure 2The bottom surface of the upper accommodating groove 208 of the second decorative member 20 is further provided with a gas permeable hole 209 penetrating the second plate body along the thickness direction of the second plate body, and a gas permeable passage 203 is further provided between the first decorative member 10 and the second decorative member 20, the gas permeable hole 209 and the gas permeable passage 203 being in communication, so as to balance the air pressure inside and outside the mobile terminal.

[0041] Specifically, the bottom of the first decorative member 10 is fixedly connected with the second decorative member 20 by means of a decorative member adhesive portion 501, the outer peripheral portion of the first decorative member 10 has a first inner tangent surface 113 extending radially outward, and the radially inner side of the upper accommodating groove 208 of the second decorative member 20 is provided with a second inner tangent surface 213 extending radially inward. The first inner tangent surface 113 and the second inner tangent surface 213 of the upper accommodating groove 208 are at least partially spaced apart, and the portion spaced apart therebetween forms the gas permeable passage 203. The decorative member adhesive portion 501 is provided with a gas permeable opening 5011, which is in communication with the gas permeable hole 209 on one hand, and extends along the plate surface to the outer wall of the first decorative member 10 on the other hand, and is in communication with the gas permeable passage 203 formed between the outer wall of the first decorative member 10 and the inner wall of the upper accommodating groove 208. In this way, the air pressure balance inside and outside the mobile terminal can be achieved. Preferably, the side of the gas permeable hole 209 facing the inside of the mobile terminal is further provided with a gas permeable waterproof film. The gas permeable waterproof film can ensure the flow of air while preventing liquid from entering the inside of the mobile terminal. The first step portion 110 arranged opposite to the third plate surface 2101 can further improve the protection capability of the inside of the mobile terminal and prevent dust or liquid from entering the inside of the mobile terminal.

[0042] Meanwhile, referring to Figure 2 and Figure 3 In this embodiment, the second decorative member 20 further comprises a ring-shaped sealing flange 222 protruding from the fourth plate surface 2102 along the thickness direction of the plate body away from the first decorative member 10, the sealing flange 222 being formed at the outer peripheral portion of the fourth plate surface 2102 and enclosing a lower accommodating cavity together with the fourth plate surface 2102 and the back plate 30. The back plate adhesive portion 503 is arranged in the lower accommodating cavity, and is similar to the decorative member adhesive portion 501, the back plate adhesive portion 503 being formed in a sheet shape, one side of which is adhered to the fourth plate surface 2102 and the other side of which is adhered to the upper side of the back plate 30.

[0043] In addition, the decorative assembly further comprises a mounting seat 70 arranged on the side of the back plate 30 away from the second decorative member 20, so as to be clamped to the second decorative member 20 on the bottom side of the back plate 30 to opposingly clamp the back plate 30 with the second decorative member 20, thereby fixing the decorative assembly relative to the back plate 30.

[0044] In this embodiment, the second plate body is composed of an upper connecting plate 21 fixedly connected with the first decorative member 10 and a lower connecting plate 22 fixedly connected with the back plate 30, which are stacked along the thickness direction of the plate body. The upper connecting plate 21 is fixedly connected with the lower connecting plate 22, and an intermediate passage is arranged between the two plates to communicate the inner side and the outer side of the decorative assembly. The circumferential outer side of the upper connecting plate 21 has a first inclined surface 201, and the lower connecting plate 22 has a second inclined surface 202, which are adjacent to each other and spliced to form an outer inclined surface 210.

[0045] Specifically, in this embodiment, the upper connecting plate 21 is formed as a long strip-shaped plate, and the lower connecting plate 22 is formed as a ring-shaped plate matched with the shape of the upper connecting plate 21. The upper connecting plate 21 and the lower connecting plate 22 are stacked along the thickness direction of the plate body. The plurality of openings in the middle part of the upper connecting plate 21 are defined as the middle openings of the second decorative member 20, and the second stepped portion 212 of the second decorative member 20 is formed by the inward protrusion of the radially inner side wall of the upper connecting plate 21. At the same time, the third plate surface 2101 of the second decorative member 20 is the upper side surface of the upper connecting plate 21, the fourth plate surface 2102 of the second decorative member 20 is the lower side surface of the lower connecting plate, the upper connecting plate 21 further has a fifth plate surface 216 opposite to the third plate surface 2101, and the lower connecting plate 22 further has a lower stepped portion 220 protruding inward along the radially inner wall thereof. The lower stepped portion 220 includes a fifth stepped surface 224 and a sixth stepped surface opposite to each other along the thickness direction thereof, wherein the fifth stepped surface 224 faces the upper connecting plate 21 to be opposite to the upper connecting plate 21, and the sixth stepped surface is coplanar with the fourth plate surface 2102 and faces away from the upper connecting plate 21 to face the back plate 30.

[0046] The lower side of the upper connecting plate 21 at least partially extends into the inner side of the opening of the lower connecting plate 22, and the fifth stepped surface 224 and the fifth plate surface 216 are spaced apart. The radially inner side surface of the lower connecting plate 22 and the radially outer side surface of the upper connecting plate 21 are also spaced apart. Thus, an auxiliary adhesive portion is further arranged in the space between the fifth stepped surface 224 and the fifth plate surface 216. Similar to the decorative member adhesive portion 501, the auxiliary adhesive portion is formed as a sheet of adhesive or other adhesive material, which is adhered to the fifth plate surface 216 on one side and adhered to the fifth stepped surface 224 on the other side. In addition, the radially inner side of the lower connecting plate 22 has a third inner connecting surface 215, and the radially outer side of the upper connecting plate 21 has a fourth inner connecting surface 223. The third inner connecting surface 215 and the fourth inner connecting surface 223 are spaced apart, and the gap therebetween extends along the direction perpendicular to the plate body and is open to the outside by the outer inclined surface 210 of the second decorative member 20 to communicate with the outside. In some embodiments not shown, the spacing space is arranged to communicate with the inside of the mobile terminal to achieve internal and external air pressure balance.

[0047] The upper connecting plate 21 is provided with a lower adhesive portion 502 for bonding with the mounting seat 70, and the lower connecting plate 22 is provided with a back plate adhesive portion 503 for bonding with the back plate 30. The mounting seat 70 has a boss 71 protruding towards the first decorative piece 10 along the stacking direction, and the lower adhesive portion 502 is bonded to the boss 71, and the back plate adhesive portion 503 is bonded to the surface of the back plate 30.

[0048] Referring to Figure 1 Figure 2 and Figure 4 , Figure 4 An exemplary sectional view of the decorative assembly is shown in some embodiments of the present disclosure. In this embodiment, a third decorative piece 61 and a fourth decorative piece 62 are also included. The third decorative piece 61 is generally formed as a plate with two lens holes formed on the surface thereof. Similarly, the fourth decorative piece 62 is also formed as a plate with one lens hole formed on the surface thereof. The first mounting groove 104 and the second mounting groove 105 are provided on the first surface 111 of the first decorative piece 10, and the first mounting groove 104 and the second mounting groove 105 are recessed from the first surface 111 towards the second surface 114. The first mounting groove 104 corresponds to two adjacent exposure holes among the three exposure holes, and the second mounting groove 105 corresponds to the remaining one exposure hole. The third decorative piece 61 is fitted in the first mounting groove 104, and the fourth decorative piece 62 is fitted in the second mounting groove 105, so that the lens holes on the third decorative piece 61 and the fourth decorative piece 62 are respectively aligned with the exposure holes on the first decorative piece 10.

[0049] The third decorative piece 61 and the fourth decorative piece 62 are made of metal material, so that they can protect the interactive components such as camera lenses inside them from being bumped by external objects, and prevent lateral light from entering the lenses and affecting the shooting effect. At the same time, the first decorative piece 10 is also made of metal material to further prevent lateral light from entering the lenses. The upper connecting plate 21 of the second decorative piece 20 is made of transparent, translucent or opaque material, and the lower connecting plate 22 is made of transparent material. Therefore, the decorative assembly can have stronger levels of visual effects, and the opaque first decorative piece 10, the third decorative piece 61 and the fourth decorative piece 62 appear to be suspended in the visual effect of the back plate 30, improving the appearance and recognition of the product.

[0050] Furthermore, in some embodiments not shown, the mobile terminal also includes a light strip disposed on the back of the mobile terminal and electrically connected to the control module of the mobile terminal. This light strip changes brightness or color in response to control or drive commands from the control module, thereby enabling functions such as incoming call alerts and new message notifications. The transparent portions of the upper connecting plate 21 and / or the lower connecting plate 22 at least partially overlap with the light strip along the thickness direction of the upper connecting plate 21. Thus, by utilizing the outer bevel of the upper connecting plate 21 or the lower connecting plate 22, the light emitted by the light strip can be obliquely refracted to the outside of the mobile terminal, increasing the visible angle of the indicator light, making it more prominent, improving the alert effect, enhancing visual recognition, and improving the supplementary lighting effect.

[0051] Those skilled in the art will understand that, although the above description shows a scheme in which the first decorative element 10, the third decorative element 61, and the fourth decorative element 62 are made of metallic materials, and the second decorative element 20 is made of a partially or fully transparent material, this disclosure does not limit the material selection for the various components of the decorative assembly. For example, in some embodiments not shown, the first decorative element 10, the third decorative element 61, and the fourth decorative element 62 may also be made of transparent materials, while the second decorative element 20 may be made of metallic materials. The specific material selection can be determined according to actual process requirements or appearance style.

[0052] See Figure 5 , Figure 5 An exemplary cross-sectional view of a decorative component according to some embodiments of this disclosure is shown. In this embodiment, the outer side of the upper connecting plate 21 is provided with an upper arc surface 217, and the outer side of the lower connecting plate 22 is provided with a lower arc surface 227 located on the outer periphery of the upper arc surface 217. The upper arc surface 217 and the lower arc surface 227 have different curvatures. At the same time, the adjacent portions of the upper arc surface 217 and the lower arc surface 227 are tangentially arranged, such that the upper arc surface 217 and the lower arc surface 227 together form the outer arc surface 230 of the decorative component, thereby eliminating the sharp edges of the portion of the decorative component protruding from the back plate 30 and increasing the comfort of the user when holding or touching the mobile terminal.

[0053] See Figure 6 , Figure 6 An exemplary perspective view of a mobile terminal according to some embodiments of this disclosure is shown. In this embodiment, the mobile terminal 200 includes a host 300, a back panel 30 fixedly disposed on one side of the host 300, and a decorative component 100 fixedly disposed on the back panel 30. The back panel 30 has a through-hole for exposing a camera of the host 300, and the decorative component 100 is disposed outside the through-hole to seal and protect the camera portion, preventing damage to the camera component from external objects.

[0054] See Figure 7 and Figure 8 ,Figure 7 An exemplary top view of a mobile terminal showing some embodiments of the present disclosure, Figure 8 An exemplary top view of a mobile terminal showing some embodiments of the present disclosure, Figure 7 An enlarged schematic view of section A showing the position of the coil assembly 80 in dotted lines. In this embodiment, the mobile terminal 200 further comprises a coil assembly 80 disposed on the side of the back plate 30 facing away from the decorative assembly 100. The coil assembly 80 comprises a wireless transmission assembly, such as an NFC coil, for exchanging information with the outside. The coil assembly 80 at least partially overlaps the first decorative piece 10 or the second decorative piece 20 in the stacking direction of the first decorative piece 10 and the second decorative piece 20, while in the case where the first decorative piece 10, the third decorative piece 61 and the fourth decorative piece 62 are made of metal material and the second decorative piece 20 is made of transparent or translucent non-metal material, the coil assembly 80 is disposed in a staggered manner with the first decorative piece 10 in the stacking direction. Specifically, viewed in the direction perpendicular to the plate surface of the back plate 30, the coil assembly 80 is disposed in the area between the radially outer edge of the second decorative piece 20 and the radially outer edge of the first decorative piece 10. In this way, the coil assembly 80 is disposed inside the decorative assembly 100 in a compact structure, avoiding interference from other components inside the mobile terminal, while its signal transmission is not shielded or interfered by the metal material of the first decorative piece 10, achieving good communication effect.

[0055] In addition, referring to Figure 9 , Figure 9 An enlarged schematic view of section A showing the position of the coil assembly 80 in dotted lines. In this embodiment, the mobile terminal 200 further comprises a coil assembly 80 disposed on the side of the back plate 30 facing away from the decorative assembly 100. The coil assembly 80 comprises a wireless transmission assembly, such as an NFC coil, for exchanging information with the outside. The coil assembly 80 at least partially overlaps the first decorative piece 10 or the second decorative piece 20 in the stacking direction of the first decorative piece 10 and the second decorative piece 20, while in the case where the first decorative piece 10, the third decorative piece 61 and the fourth decorative piece 62 are made of metal material and the second decorative piece 20 is made of transparent or translucent non-metal material, the coil assembly 80 is disposed in a staggered manner with the first decorative piece 10 in the stacking direction. Specifically, viewed in the direction perpendicular to the plate surface of the back plate 30, the coil assembly 80 is disposed in the area between the radially outer edge of the second decorative piece 20 and the radially outer edge of the first decorative piece 10. In this way, the coil assembly 80 is disposed inside the decorative assembly 100 in a compact structure, avoiding interference from other components inside the mobile terminal, while its signal transmission is not shielded or interfered by the metal material of the first decorative piece 10, achieving good communication effect.

[0056] While several embodiments of the present disclosure have been shown and described herein, it is to be understood that the embodiments are merely exemplary. Numerous changes, substitutions and equivalents can occur to those skilled in the art without departing from the spirit and scope of the present disclosure. It is therefore intended that the disclosure be construed as including all such changes, substitutions and equivalents. The following claims are intended to define and protect the scope of the present disclosure.

Claims

1. A decorative component for the back panel of a mobile terminal, characterized in that, include: A first decorative element (10) and a second decorative element (20) are sequentially stacked along the thickness direction of the mobile terminal. The first decorative element has a first stepped portion (110) on its outer circumferential surface, and the second decorative element (20) has a second stepped portion (212) on its inner circumferential surface. The first stepped portion (110) and the second stepped portion (212) are fixed together. The second decorative element (20) is at least partially disposed on the outer circumferential surface of the first decorative element (10). The first decorative element (10) and the second decorative element (20) are stacked sequentially on the surface of the back plate (30), and the outer peripheral portion of the second decorative element (20) away from the back plate forms an outer slope (210) inclined to the surface of the back plate (30).

2. The decorative component according to claim 1, characterized in that, The second decorative element (20) includes an upper connecting plate (21) fixedly connected to the first decorative element (10) and a lower connecting plate (22) fixedly connected to the back plate (30). The upper connecting plate (21) and the lower connecting plate (22) are fixedly connected. The upper connecting plate has a first inclined surface on its outer circumferential side, and the lower connecting plate has a second inclined surface. The first inclined surface and the second inclined surface are adjacent to each other and spliced ​​together to form the outer inclined surface.

3. The decorative component according to claim 2, characterized in that, A channel connecting the inner and outer sides of the decorative component is provided between the first decorative component (10) and the second decorative component (20). The opening of the channel on the outer side is adjacent to the outer inclined surface, and the orientation of the opening is perpendicular to the thickness direction of the upper connecting plate (21).

4. The decorative component according to claim 2, characterized in that, The upper connecting plate (21) has a third inner surface (215) radially outward along the plate surface and a fifth plate surface (216) perpendicular to the plate surface and facing the lower connecting plate (22). The lower connecting plate (22) has a fourth inner surface (223) radially inward along the plate surface and a fifth step surface (224) perpendicular to the plate surface and facing the upper connecting plate (21). The third inner surface (215) is opposite to the fourth inner surface (223), and the fifth plate surface (216) is opposite to the fifth step surface (224) in a direction perpendicular to the plate surface.

5. The decorative component according to claim 2, characterized in that, It also includes a mounting base (70), which is disposed on the side of the back plate (30) away from the second decorative element (20). The upper connecting plate (21) has a lower bonding part (502) that is bonded to the mounting base (70) on one side, and the lower connecting plate (22) has a back plate bonding part (503) that is bonded to the back plate (30) on one side. The mounting base (70) has a boss (71) that protrudes toward the first decorative element (10) along the stacking direction of the first decorative element (10) and the second decorative element (20). The lower bonding part (502) is bonded to the boss (71), and the back plate bonding part (503) is bonded to the surface of the back plate (30).

6. The decorative component according to any one of claims 1 to 5, characterized in that, It also includes a third decorative element (61), wherein the first decorative element (10) has a first outer receiving groove (104) that opens outward, and the third decorative element (61) is fixedly disposed inside the first outer receiving groove (104).

7. The decorative component according to claim 6, characterized in that, The first step portion (110) is spaced apart from the second decorative element (20) along the thickness direction of the first decorative element (10).

8. The decorative component according to claim 2, characterized in that, The lower connecting plate (22) is a transparent shell, and the upper connecting plate (21) is a semi-transparent or opaque shell; Alternatively, the upper connecting plate (21) may be a transparent shell, and the lower connecting plate (22) may be a semi-transparent or opaque shell.

9. The decorative component according to claim 8, characterized in that, The mobile terminal also includes a light strip, and the transparent portion of the upper connecting plate (21) and / or the lower connecting plate (22) at least partially overlaps with the light strip along the thickness direction of the upper connecting plate (21).

10. The decorative component according to claim 2, characterized in that, The upper connecting plate (21) has an upper arc surface (217) on its outer side, and the lower connecting plate (22) has a lower arc surface (227) on its outer side located on the outer periphery of the upper arc surface (217). The upper arc surface (217) and the lower arc surface (227) have different curvatures.

11. The decorative component according to claim 2, characterized in that, The mobile terminal further includes a coil assembly, wherein the decorative assembly and the coil assembly at least partially overlap along the thickness direction of the back plate. The first decorative element (10) includes a metal portion, and the coil assembly is offset from the metal portion of the first decorative element (10) along the direction in which the decorative element and the coil assembly are stacked, or The second decorative element (20) includes a metal portion, and the coil assembly is offset from the metal portion of the second decorative element (20) along the stacking direction.

12. A mobile terminal, characterized in that, Includes the decorative components according to any one of claims 1 to 11.

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