Shell components and smart bracelet

Abstract

A shell assembly includes a plurality of mutually matching shells and a synchronization assembly that hinges the plurality of shells together, each shell includes a plate extending in a transverse direction, side walls integrally formed at both transverse ends of the plate, and a fixing strip formed on the lower surface of the shell, the synchronization assembly is fixed to the fixing strip below the shell to connect the plurality of shells as a whole, the inner side of the side wall includes a receiving groove, a matching protrusion, and an outer protrusion protruding from the side wall along the transverse outer side, respectively arranged on both longitudinal sides, the matching protrusion of one shell is matched in the receiving groove of the other shell, the receiving groove and the matching protrusion are narrow at the top and wide at the bottom, and the outer protrusion is wide at the top and narrow at the bottom. The present application also includes a smart bracelet, which has the advantages of being foldable and having a large screen.

Description

Technical Field

[0001] The present application relates to the field of mobile devices, and in particular to a housing assembly and a smart bracelet. Background Art

[0002] Smart bracelets are widely used in people's daily lives and are used to connect to smartphones to monitor health indicators, etc. Existing smart watches or smart bracelets generally have a shell, a screen assembly and electronic components assembled on the shell, and a pair of straps connected to both sides of the shell. The strap structures are diverse, including leather materials, hinges, etc. Because smart bracelets are limited by the size of human hands, the screen is very small. With the rise of flexible screens, the market has begun to try to assemble flexible screens to the entire unfolded length of smart watches or smart bracelets, that is, the strap part is also used as a part of the shell to assemble the screen. However, when assembling the screen with the strap part, attention should be paid to the protection of the flexible screen when folding and bending. Summary of the invention

[0003] In view of this, it is necessary to provide a shell assembly and a smart bracelet, by designing an integrated foldable shell, and mounting the flexible screen as a whole on the foldable shell to form a larger screen.

[0004] In order to solve the above technical problems, the present application provides a shell assembly, including a plurality of shells that cooperate with each other and a synchronization assembly that movably hinges the plurality of shells together, each shell including a plate body extending in the transverse direction, side walls integrally formed at the transverse ends of the plate body, and a fixing strip formed on the lower surface of the shell, the synchronization assembly is fixed on the fixing strip under the shell to connect the plurality of shells as a whole, the inner side of the side wall includes a receiving groove, a matching protrusion, and an outer protrusion protruding from the side wall along the transverse outer side, respectively arranged on both longitudinal sides, the matching protrusion of one shell cooperates with the receiving groove of the other shell, the receiving groove and the matching protrusion are narrow at the top and wide at the bottom, and the outer protrusion is wide at the top and narrow at the bottom.

[0005] Preferably, when unfolded, the outer edge of the mating protrusion is located in the accommodating groove and the two at least partially overlap, and there is a gap between the outer protrusions; when folded, the mating protrusions all enter the accommodating groove and the two overlap in the transverse direction, and the longitudinal side surfaces of the outer protrusions fit each other.

[0006] Preferably, the receiving groove is a concave arc surface structure, the matching protrusion is a convex arc surface structure, and the receiving groove is located on the inner side of the outer protrusion.

[0007] Preferably, the shell assembly further includes a first shell and a third shell, the aforementioned several shells are second shells, several of the second shells are respectively located on the longitudinal outside of the first shell, and the third shell is located on the outside of the second shell.

[0008] Preferably, the first shell and the third shell also include a plate body, side walls at both lateral ends of the plate body and a fixing strip, and the third shell is further provided with an end wall on the longitudinal outer side, and the end wall connects a pair of side walls of the third shell.

[0009] Preferably, the width of the first shell is greater than that of the second shell, and both longitudinal ends of the first shell are movably hinged to the second shell and the third shell located on the longitudinal outer sides respectively through synchronous components.

[0010] Preferably, the side walls and end walls of the first, second and third shells are arranged below the plate body to form an assembly space, and the assembly space can form a curved space as the second and third shells are folded and bent.

[0011] Preferably, the side walls and the end walls protrude upwardly on the upper surface of the plate body to form a flange, and the flange is arranged on the upper surface of the plate body to form a mounting space for installing a flexible screen. Avoidance gaps connecting the assembly space and the mounting space are provided on both longitudinal sides of the first shell.

[0012] Preferably, the synchronization component includes an articulated base which is hinged to each other and fixed one-to-one on the fixing bar of the shell, a plurality of hinge groups and a damping chain stacked with the articulated base, and the articulated base, hinge group and damping chain are fixed as a whole one by one through an axis component.

[0013] Preferably, the hinge base includes a base portion, a fixing portion formed on a lateral side of the base portion, a screw hole opened on the fixing portion, an engaging groove opened on the inner side of the base portion, and an engaging block protruding from one longitudinal end of the base portion. The engaging blocks of several hinge bases are engaged with the engaging grooves, and the damping chain includes several damping blocks connected end to end. The damping blocks are fixed to the hinge base and the hinge group through an axis component, and each hinge base is fixed to the fixing bar of the corresponding shell through the fixing portion. The engaging block and the engaging groove rotate along a certain rotation trajectory so that the folding and bending of the shell rotate according to a predetermined trajectory.

[0014] In order to solve the above technical problems, the present application also provides a smart bracelet, including the above-mentioned shell assembly.

[0015] The present application links several shells together through a synchronous component to achieve folding and bending, and forms a mounting space for mounting a flexible screen on the upper part of the shell. The shell is used for the strap part of a smart bracelet and can increase the screen size of the smart bracelet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a three-dimensional diagram of the foldable hand-worn device of the present application in an unfolded state;

[0018] Figure 2 A three-dimensional diagram of the housing of this application;

[0019] Figure 3 A three-dimensional diagram of the housing of the present application and the synchronization components therein;

[0020] Figure 4 A three-dimensional diagram of the cover of the present application;

[0021] Figure 5 A three-dimensional view of the cover body of the present application from another angle and a partial enlarged view thereof;

[0022] Figure 6 A three-dimensional diagram of a second cover body of the cover body of the present application;

[0023] Figure 7 A three-dimensional diagram of a first shell of the shell of the present application;

[0024] Figure 8 A three-dimensional diagram of a second shell of the shell of the present application;

[0025] Fig. 9 This is a combined diagram of the second shell and the second cover of the present application;

[0026] Fig.10 This is a three-dimensional diagram of the foldable hand-worn device of the present application in a folded state;

[0027] Fig.11 A three-dimensional diagram of a first cover body and a plurality of second cover bodies of the cover body of the present application in a folded state;

[0028] Fig.12 A three-dimensional diagram of several second shells of the shell of the present application in a folded state;

[0029] Fig.13 A three-dimensional diagram of the synchronization component of this application in an unfolded state;

[0030] Fig.14 A three-dimensional diagram of the synchronization component of this application from another angle;

[0031] Fig.15 A three-dimensional diagram of the synchronization component of this application in a folded state;

[0032] Fig.16A three-dimensional view of the hinge seat of the synchronization component of the present application;

[0033] Fig.17 A front view of a plurality of articulated seats of the synchronization assembly of the present application in an unfolded state;

[0034] Fig.18 A three-dimensional diagram of several groups of bite blocks of the synchronization assembly of the present application in an unfolded state;

[0035] Fig.19 A three-dimensional diagram of a first bite block of the synchronization assembly of the present application;

[0036] Fig. 20 A three-dimensional diagram of the second and third hinge groups of the synchronization assembly of the present application;

[0037] Fig.21 A three-dimensional diagram of the damping mechanism of the synchronization assembly of the present application. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution of this application will be clearly and completely described below in combination with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0039] This application is Figure 1 The X direction shown is the front of the front-back direction (longitudinal direction), the Y direction is the right of the left-right direction (lateral direction), and the Z direction is the top of the up-down direction (vertical direction).

[0040] See also Figures 1 to 4 As shown, the foldable hand-worn device of the present application includes a foldable shell 10, a cover body 20 assembled on the shell 10, a synchronization component 30 for controlling the synchronous folding of the shell 10, electronic components (not shown) assembled in an assembly space 40 enclosed by the shell 10 and the cover body 20, and a flexible screen (not shown) mounted on the upper surface of the shell 10.

[0041] See also Figures 4 to 6 , Fig.11As shown, the cover body 20 includes a first cover body 20a, a plurality of second cover bodies 20b located on both sides of the first cover body 20a in the longitudinal direction, and a third cover body 20c located outside the outermost second cover body 20b. The first cover body 20a, the second cover body 20b, and the third cover body 20c all include a cover plate 21 and a fixing seat 22 formed by protruding upward from the cover plate 21. The upper surface of the cover plate 21 at least includes a horizontal surface 211 extending in the transverse direction, and the fixing seat 22 is formed by protruding upward from the horizontal surface 211. The fixing seat 22 includes an extension portion 221, a fixing portion 222 extending upward from the top of the extension portion 221, a screw hole 224 opened on the top surface of the fixing portion 222, and a positioning column 223 protruding upward from the top surface of the fixing portion 222. The longitudinal width of the fixing portion 222 is greater than the longitudinal width of the extension portion 221, and an avoidance space 225 is formed between the fixing portion 222 and the upper surface of the cover plate 21.

[0042] The first cover body 20a further comprises first arcuate portions 23 respectively provided on the upper surfaces of the two longitudinal sides of the cover plate 21. Two pairs of the fixing seats 22 are formed on the upper surface of the first cover body 20a extending upward in the transverse direction, and the fixing portions 222 of the two pairs of fixing seats 22 are arranged in opposite directions. The longitudinal width of the first cover body 20a is greater than that of the second and third cover plates 20b and 20c, and the transverse widths of the first cover body 20a and the second and third cover plates 20b and 20c are the same.

[0043] The lower surface of the second cover 20b facing the first cover 20a is provided with a second curved surface 24 matching the first curved surface 23, and the upper surface away from the first cover 20a is formed with the first curved surface 23. The lower surface of the third cover plate 20c close to the second cover 20b is provided with a second curved surface 24. The first curved surface 23 is a concave curved surface, and the second curved surface 24 is a convex curved surface.

[0044] When the cover 20 is unfolded, the edge of the second arc surface 24 overlaps the edge of the first arc surface 23. When in the folded state, the second arc surface 24 is completely retracted into the first arc surface 23 so that the cover 20 is in a bent and folded state.

[0045] Please continue reading Figures 1 to 3 , Figures 7 to 9 , Fig.12As shown, the housing 10 includes a first housing 10a, a plurality of second housings 10b located on both sides of the first housing 10a in the longitudinal direction, and a pair of third housings 10c located outside the second housing 10b. The first housing 10a, the second housing 10b, and the third housing 10c all include a plate 11, side walls 12 integrally formed at both ends of the plate 11 in the transverse direction, and two rows of fixing strips 13 provided on the bottom surface of the plate 11. The upper surface of the plate 11 is a horizontal surface, and the longitudinal ends of the third housing 10c are also integrally formed with end walls 15, and the side walls 12 and the end walls 15 include flanges 127 and 151 protruding upwards, and the flanges 127 and 151 of the first, second, and third housings 10a, 10b, and 10c are enclosed to form a mounting space 50 for fitting a flexible screen. The side walls 12 and the end walls 15 are enclosed below the plate 11 to form the assembly space 40 for assembling electronic components. Each row of the fixing strips 13 has two groups of fixing holes 131 , 132 arranged in the transverse direction.

[0046] The side walls 12 of the first housing 10a are provided with receiving grooves 121 on both sides in the longitudinal direction and key holes 19 that penetrate the side walls 12 in the transverse direction. The plate body 11 is also provided with avoidance notches 14 at both ends in the longitudinal direction, and the avoidance notches 14 connect the mounting space 50 and the assembly space 40, and transmit the signal in the assembly space 40 to the flexible screen in the mounting space 50 through cables.

[0047] The side wall 12 of the second housing 10b is formed with a mating protrusion 122 that matches the receiving groove 121 protruding from the side facing the first housing 10a, and the side wall 12 of the second housing 10b is provided with the receiving groove 121 on the side away from the first housing 10a. The side wall 12 of the third housing 10c is formed with a mating protrusion 122 that matches the receiving groove 121 protruding from the side facing the second housing 10b.

[0048] The lateral outer surface of the side wall 12 of the second housing 10b is formed with an outer protrusion 123 protruding in the lateral direction relative to the matching protrusion 122, and the receiving groove 121 is located inside the outer protrusion 123. The receiving groove 121 and the matching protrusion 122 are both narrow at the top and wide at the bottom, while the outer protrusion 123 is wide at the top and narrow at the bottom. The receiving groove 121 and the matching protrusion 122 are both matching arc surface structures, specifically, the receiving groove 121 is a concave arc surface structure, and the matching protrusion 122 is a convex arc surface structure. When fully matched, the matching protrusion 122 is completely accommodated in the receiving groove 121.

[0049] See also Figures 1 to 12As shown, the cover body 20 and the shell 10 are in a one-to-one correspondence, the first, second and third cover bodies 20a, 20b, 20c correspond to the first, second and third shells 10a, 10b, 10c respectively, and the number of the second cover body 20b and the second shell 10b is determined according to factors such as product length.

[0050] The cover 20 is installed under the shell 10 and closes the bottom of the assembly space 40. The fixing seat 22 of the cover 20 is connected to the fixing bar 13 of the shell 10 by screws. Specifically, the fixing seat 22 is positioned on a group of fixing holes 132 of the fixing bar 13, and is screwed into the screw holes 224 on the bottom surface of the fixing seat 22 from the bottom of the cover 20 by screws. At the same time, the fixing holes 132 also include a through screw hole and a positioning hole matched with the positioning column 223. The cover 20 is first positioned on the fixing bar 13 and then the cover 20 and the shell 10 are fixed by screws.

[0051] When the assembly is completed and the cover 20 is in the unfolded state, the bottom edge of the second curved surface 24 of the second cover 20b of the cover 20 overlaps the upper edge of the first curved surface 23 of the first cover 20a, and the bottom edge of the second curved surface 24 of the second cover 20b overlaps the upper edge of the first curved surface 23 of another second cover 20b, and so on, and several second covers 20b are linked together. When the foldable hand-worn device is folded and closed, the second curved surface 24 is completely matched to the bottom of the first curved surface 23 to achieve folding and bending.

[0052] The second shell 10b of the shell 10 is respectively located on both sides of the longitudinal direction of the first shell 10a, and the matching protrusion 122 on one side of the second shell 10b matches with the receiving groove 121 of the first shell 10a, and the receiving groove 121 on the other side of the current second shell 10b opposite to the matching protrusion 122 matches with the matching protrusion 122 of another second shell 10b, and so on, a number of second shells 10b are linked and matched, and the matching protrusion 122 of the third shell 10c matches with the receiving groove 121 of the outermost second shell 10b. When in the unfolded state, the end edge of the matching protrusion 122 is located in the receiving groove 121, and there is a gap between the lower part of the outer protrusion 123. When in the closed state, the matching protrusion 122 is completely accommodated in the receiving groove 121, and the outer protrusions 123 are all fitted with each other, and the structure of the outer protrusion 123 being wide at the top and narrow at the bottom makes it bend and fold downward.

[0053] In a specific implementation, the first, second and third shells 10a, 10b and 10c of the shell 10 are linked together through the synchronization component 30, and the synchronization component 30 is fixed to a fixing hole 131 of the fixing bar 13. At the same time, the cover 20 is fixedly connected to the fixing bar 13 of the shell 10 through the fixing seat 22.

[0054] In one embodiment, both longitudinal sides of the side wall 12 of the first shell 10a may be configured as mating protrusions 122, and the corresponding receiving grooves 121 of the second shell 10b are interchanged with the mating protrusions 122, and the mating protrusions 122 of the second shell 10c are replaced by the receiving grooves 121.

[0055] In one embodiment, the longitudinal sides of the first cover body 20a are set to have a second arc surface 24 of a convex arc surface structure, the first and second arc surface 23, 24 on the longitudinal sides of the second cover body 20b are set in a reverse position, and the second arc surface 24 of the third cover body 20c is replaced by the first arc surface 23.

[0056] See also Figures 13 to 21 As shown, the synchronization component 30 includes a plurality of hinge bases 31, a first hinge group 32, a second hinge group 33, a third hinge group 34, a plurality of damping chains 35 and an axis component 36 that combines the hinge base 31, the first hinge group 32, the second hinge group 33, the third hinge group 34 and the damping chain 35 together.

[0057] Each hinge base 31 includes a base portion 311, a fixing portion 312 integrally formed on the first lateral side of the base portion 311, a locking strip 314 protruding from the bottom of the second lateral side of the base portion 311, a screw hole (unnumbered) penetrating the fixing portion 312 in the up-down direction, a positioning column 313 protruding downward from the bottom of the fixing portion 312, an engagement groove 316 opened on the second lateral side of the base portion 311, an engagement block 317 protruding from the first longitudinal side of the base portion 311, and an axial hole 315 penetrating the base portion 311 laterally.

[0058] The engaging groove 316 includes a relatively narrow opening portion 3162 formed at the second longitudinal side of the base portion 311 and a wide groove portion 3161 extending upwardly from the opening portion 3162 in an arc shape. The wide groove portion 3161 is formed by extending upwardly from the opening portion 3162 in an arc shape, and the width of the wide groove portion 3161 is greater than the width of the opening portion 3162. The engaging block 317 includes an arc strip 3171 and a clamping head portion 3172 formed at a free end of the arc strip 3171, the width of the clamping head portion 3172 is greater than the width of the opening portion 3162, and the length of the clamping head portion 3172 is less than the length of the wide groove portion 3161. The length of the arc strip 3171 is greater than the length of the opening portion 3162. During assembly, the bite block 317 of one hinge base 31 is inserted into the bite groove 316 of another hinge base 31 from one lateral side, and the bite block 317 can rotate in the bite groove 316. By analogy, a plurality of hinge bases 31 are hinged together to form a chain. When the plurality of hinge bases 31 are in the unfolded state, the clamping head 3172 of the clamping block 317 is located in the wide groove 3161 and is limited to the opening 3162, and the arc strip 317 is at least partially exposed outside the bite groove 316; when in the folded and bent state, the clamping head 3172 goes deep into the wide groove 3161, and the arc strip 317 is completely received in the opening 3162, and the arc strip 317 at least partially enters the wide groove 3161.

[0059] The first hinge assembly 32 includes a plurality of first hinged parts, each of which includes a first main body 321, a first slot 324 formed at the bottom of the first main body 321, an axial hole 325 that passes through the first main body 321 in a transverse direction, a bite groove 322 formed on the first main body 321 and opening toward the first longitudinal side of the first main body 321, and a bite block 323 that protrudes from the second longitudinal side of the first main body 321. The bite groove 322 and the bite block 323 of the first hinged part are consistent in structure with the bite groove 316 and the bite block 317 of the hinge base 31, and are not described in detail here.

[0060] The second hinge assembly 33 includes a plurality of second hinged members, each of which includes a second main body 331, a second slot 332 disposed at the bottom of the second main body 331, an axial hole 335 transversely penetrating the second main body 331, a hinge slot 333 disposed at a first longitudinal side of the second main body 331, and a hinge block 334 protruding from a second longitudinal side of the second main body 331. The plurality of second hinged members are hinged in the hinge slot 333 through the hinge block 334 on one side to form a chain structure.

[0061] The third hinge group 34 includes a plurality of third hinged parts, and the structures of the third hinged parts are completely consistent with the second hinged parts of the second hinge group 33, which will not be described in detail here.

[0062] The damping chain 35 includes a plurality of damping blocks, each of which includes a strip 351, an axial hole 352 provided on a first longitudinal side of the strip 351, and a damping groove 353 provided on a second longitudinal side of the strip 351. The damping groove 353 includes a first position groove 354, a second position groove 355, a damping convex portion 356 located between the first and second position grooves 354, 355, and a notch 357 provided on the strip 351 to open the second position groove 355. The damping convex portions 356 are connected to the first and second position grooves 354, 355. The damping block is formed by stacking and assembling a plurality of damping sheets.

[0063] The synchronization assembly 30 combines a set of hinge bases 31, a first hinge group 32, a second hinge group 33, a third hinge group 34, and a damping chain 35 through a plurality of shaft components 36. The damping chain 35 is formed by connecting a plurality of damping blocks end to end, and the lengths of the second and third hinges are greater than the lengths of the hinge base 31 and the first hinge.

[0064] Specifically, the number of the articulated bases 31 is the same as the number of the first articulated members of the first articulated group 32. The sum of the number of the second and third articulated members of the second and third articulated groups 33 and 34 is equal to the number of the first articulated members, and the number of the damping blocks of the damping chain 35 is one less than the number of the articulated bases 31.

[0065] During assembly, the engaging blocks 317 and engaging grooves 316 of the plurality of hinge bases 31 are first connected to form a hinge base 31 assembly chain, the engaging blocks 323 and engaging grooves 322 of the plurality of first hinges are connected to form the first hinge group 32, the hinge blocks 334 of the plurality of second hinges are hinged to the hinge grooves 333 to form the second hinge group 33, and the hinge blocks 334 of the plurality of third hinges are hinged to the hinge grooves 333 to form the third hinge group 33. The assembly chain of the hinge base 31, the first, second, and third hinge groups 32, 33, and 34 are stacked together, and the assembly chain of the hinge base 31 and the second hinge group 32 clamp the second and third hinge groups 33, 34 therebetween. One of the hinge bases 31 corresponds to a first hinge and a second or third hinge, that is, the second and third hinges are offset and correspond to a first hinge and a hinge base 31. The locking strip 314 of one of the hinge bases 31 is engaged with a first locking groove 324 on a first hinge and a second locking groove 332 on a second hinge or a third hinge, so as to limit the positional relationship between them. Then, the shaft component 36 passes through the shaft holes 315, 325, 335 of the hinge base 31, the first, second and third hinges, and finally the damping chain 35 is inserted into the end of the shaft component 36 and locked by a nut, wherein the first position groove 355 of the damping groove 353 of the first damping block is inserted into the free end of the first shaft component 36 and locked, and then the shaft hole 352 of the first damping block overlaps with the first position groove 355 of the second damping block and is inserted into the free end of the second shaft component 36 and locked, and so on, so that the damping blocks are connected end to end to form the damping chain 35, and the shaft hole 355 of the last damping block is inserted into the last shaft component 36 and locked, and the unevenness of the first and last damping blocks in the transverse direction is adjusted by means of gaskets to keep the two rows of damping blocks in the longitudinal direction flat.

[0066] The base portion 311 of the hinge base 31 and the first main body portion 321 of the first hinge member of the first hinge assembly 32 are both wide at the top and narrow at the bottom, and are generally trapezoidal structures. In the initial state, there are gaps between the base parts 311, and the shaft part 36 is located in the first position groove 355 of the damping block; when folding, the bite blocks 317, 323 of the hinge bases 31 and the first hinge parts penetrate into the bite grooves 316, 322 so that the longitudinal inclined side surfaces of the base part 311 of the hinge base 31 are fitted together and bent, and the first hinge group 32 is also the same; the hinge blocks 334 of the second and third hinge groups 33, 34 penetrate into the hinge groove 333; and the shaft part 36 moves from the first position groove 355 of the damping block to the second position groove 354, and applies a damping force to the shaft part 36 through the damping protrusion 35. After the shaft part 36 moves from the first position groove 355 to the second position groove 354, the overlapping distance between the two damping blocks is increased, thereby achieving folding and applying a damping force to the shaft part 36 so that it is in the damping force in the second position groove 354.

[0067] The engagement grooves 316, 322 of the articulated base 31 and the first hinge group 32 are respectively set in opposite directions; the articulated grooves 333 of the second and third hinge groups 33, 34 are set in opposite directions, and the engagement grooves 316, 322 of the articulated base 31 and the first hinge group 32 cooperate with the engagement blocks 317, 323; the articulated grooves 333 of the second and third hinge groups 33, 34 cooperate with the articulated blocks 334 to form a plurality of staggered track grooves to control the synchronous folding of the synchronous assembly 30, and a second or third hinge is staggered and corresponds to each articulated base 31 to achieve synchronous folding during folding.

[0068] The first shell 10a of the shell 10 of the foldable hand-worn device of the present application is connected to a plurality of second shells 10b on both longitudinal sides, and the longitudinal outer sides of the two second shells 10b on both longitudinal sides are connected to the third shell 10c; the second and third shells 10b, 10c on both longitudinal sides are respectively connected as a whole through two pairs of synchronization components 30, and the synchronization components 30 are fixed to the fixing holes 132 on the fixing strip 13 on the bottom surface of the shell 10 through the fixing part 312 of the hinge base 31, and the hinge bases 31 are fixed to the two longitudinal ends of the first shell 10a respectively, and the synchronization components 30 will not pass through the first shell 10a in the longitudinal direction, so that the first shell 10a has more width and lower space.

[0069] The shell 10 is fixed to the cover 20 in a one-to-one correspondence. The cover 20 includes a fixing seat 22 fixed to the first shell 10a. The fixing seat 22 extends upward and is fixed in the fixing hole 131 of the fixing bar 13, so that the cover 20 is linked as a whole by the synchronization component 30 through the shell 10.

[0070] The housing 10 of the present application can also be used in other fields, and it is sufficient to connect several housings 10 into one body by a simple hinge, such as replacing the synchronization component 40 with a simple hinge; similarly, several covers 20 can also be directly connected into one body by a simple hinge and applied in other fields. The foldable hand-worn device can be a smart bracelet, and the smart bracelet here also includes a smart watch.

[0071] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A housing assembly, characterized in that: It comprises a plurality of mutually matching shells, a cover body assembled on the shells and a synchronous assembly for movably hingedly connecting the plurality of shells together, each shell comprising a plate body extending in the transverse direction, side walls integrally formed at both transverse ends of the plate body and a fixing strip formed on the lower surface of the shell, the synchronous assembly is fixed on the fixing strip below the shell to connect the plurality of shells as a whole, the inner side of the side wall comprises a receiving groove, a matching convex portion and an outer convex portion protruding from the side wall along the transverse outer side respectively arranged on both longitudinal sides, the matching convex portion of one shell body is matched in the receiving groove of another shell body, the receiving groove and the matching convex portion are in an upper narrow and lower wide structure, and the outer convex portion is in an upper wide and lower narrow structure; The cover body includes a first cover body, a plurality of second cover bodies located on both sides of the first cover body in the longitudinal direction, and a third cover body located outside the outermost second cover body, the first cover body, the second cover body, and the third cover body all include a cover plate and a fixing seat formed by protruding upward from the cover plate, the upper surface of the cover plate at least includes a horizontal plane extending in the transverse direction, the fixing seat is formed by protruding upward from the horizontal plane, and the fixing seat of the cover body is connected to the fixing bar of the shell; the first cover body includes a first arc surface portion respectively opened on the upper surface of the two sides of the cover plate in the longitudinal direction, the second cover body is provided with a second arc surface portion matching the first arc surface portion on the lower surface facing the first cover body, and a first arc surface portion is formed on the upper surface away from the first cover body, when the cover body is unfolded, the edge of the second arc surface portion overlaps above the edge of the first arc surface portion, and when in the folded state, the second arc surface portion is completely retracted into the first arc surface portion.

2. The housing assembly according to claim 1, wherein: When unfolded, the outer edge of the mating protrusion is located in the accommodating groove and the two at least partially overlap, and there is a gap between the outer protrusions. When folded, the mating protrusions completely enter the accommodating groove and the two overlap in the transverse direction, and the longitudinal side surfaces of the outer protrusions fit each other.

3. The housing assembly according to claim 2, wherein: The receiving groove is a concave arc surface structure, the matching convex portion is a convex arc surface structure, and the receiving groove is located inside the outer convex portion.

4. The housing assembly according to claim 3, wherein: The shell assembly also includes a first shell and a third shell. The aforementioned several shells are second shells. Several of the second shells are respectively located on the longitudinal outside of the first shell, and the third shell is located on the outside of the second shell.

5. The housing assembly according to claim 4, characterized in that: The first shell and the third shell also include a plate body, side walls at both transverse ends of the plate body and a fixing strip. The third shell is also provided with an end wall on the longitudinal outer side, and the end wall connects a pair of side walls of the third shell.

6. The housing assembly according to claim 5, characterized in that: The width of the first shell is greater than that of the second shell, and the longitudinal ends of the first shell are respectively movably hinged to the second shell and the third shell located on the longitudinal outer side through synchronous components.

7. The housing assembly according to claim 6, wherein: The side walls and end walls of the first, second and third shells are arranged below the plate body to form an assembly space, and the assembly space can form a curved space as the second and third shells are folded and bent.

8. The housing assembly according to claim 7, wherein: The side walls and the end walls protrude upward to form a flange on the upper surface of the plate body, and the flange is arranged on the upper surface of the plate body to form a mounting space for installing a flexible screen. Avoidance gaps connecting the assembly space and the mounting space are provided on both longitudinal sides of the first shell.

9. The housing assembly according to claim 8, wherein: The synchronous assembly includes an articulated base which is hinged to each other and fixed one by one on the fixing strip of the shell, a plurality of hinge groups and a damping chain which are overlapped with the articulated base. The articulated base, the hinge group and the damping chain are fixed as a whole one by one through the shaft component.

10. The housing assembly according to claim 9, wherein: The hinge base includes a base portion, a fixing portion formed on a lateral side of the base portion, a screw hole opened on the fixing portion, an engaging groove opened on the inner side of the base portion, and an engaging block protruding from one longitudinal end of the base portion. The engaging blocks of several hinge bases are engaged with the engaging grooves. The damping chain includes several damping blocks connected end to end. The damping blocks are fixed to the hinge base and the hinge group through an axis component. Each hinge base is fixed to the fixing bar of the corresponding shell through the fixing portion. The engaging block and the engaging groove rotate along a certain rotation trajectory so that the folding and bending of the shell rotate according to a predetermined trajectory.

11. A smart bracelet, characterized in that: Comprising a housing assembly as claimed in any one of claims 1 to 10.

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