CN111567994A - Shell assembly and intelligent bracelet - Google Patents

Abstract

A shell assembly, comprising a plurality of shells that cooperate with each other and a synchronizing assembly that articulates a plurality of the shells together, each shell includes a plate body extending in the lateral direction, integrally formed in the lateral direction of the plate body The side walls at both ends and the fixing bars formed on the lower surface of the casing, the synchronizing component is fixed on the fixing bars under the casing to connect a plurality of the casings as a whole, and the inner side of the side walls is included in the longitudinal direction. The accommodating grooves, the matching protrusions and the outer protrusions protruding from the side walls along the lateral outer side are respectively provided on both sides. The accommodating groove and the matching protruding portion have a structure with a narrow upper portion and a wide lower portion, and the outer convex portion has a structure with a wide upper portion and a narrow lower portion. The present application also includes a smart bracelet, which has the advantages of being foldable and having a large screen.

Description

Housing assembly and smart bracelet

technical field

The present application relates to the field of mobile devices, in particular to a casing assembly and a smart bracelet.

Background technique

Smart bracelets are widely used in people's daily life to connect with smartphones to monitor health indicators, etc. The existing smart watch or smart bracelet has a general casing, the screen assembly and electronic components assembled on the casing, and a pair of straps connected to both sides of the casing. The straps have various structures. , there are leather materials, hinges and so on. Because the smart bracelet is limited by the size of the human hand, the screen is very small, and with the rise of flexible screens, the market has begun to try to assemble the flexible screen to the entire unfolded length of the smart watch or smart bracelet, that is, the strap. Parts also assemble the screen as part of the housing. However, when assembling the screen on the strap part, you need to pay attention to the protection of the flexible screen when it is folded and bent.

SUMMARY OF THE INVENTION

In view of this, it is necessary to provide a housing assembly and a smart wristband. By designing an integrated foldable housing, the flexible screen is integrally attached to the foldable housing to form a larger screen.

In order to solve the above-mentioned technical problems, the present application provides a casing assembly, which includes a plurality of casings that cooperate with each other and a synchronization assembly that articulates a plurality of the casings together, and each casing includes a plate extending in a lateral direction. body, side walls integrally formed on the lateral ends of the plate body, and fixing bars formed on the lower surface of the housing, the synchronizing assembly is fixed on the fixing bars under the housing to connect a plurality of the housings as a One body, the inner side of the side wall includes accommodating grooves, matching protrusions and external protrusions protruding from the side wall along the lateral outer side, respectively provided on both sides in the longitudinal direction. In the accommodating groove of the other shell, the accommodating groove and the matching convex portion have a structure of upper narrow and lower width, and the outer convex portion has a structure of upper wide and lower narrow.

Preferably, when unfolded, the outer edges of the matching protrusions are located in the accommodating grooves and at least partially overlap, and there is a gap between the outer protrusions. When folded, all the matching protrusions enter the accommodating groove. Inside the groove and the two are overlapped in the transverse direction, the longitudinal sides of the outer convex parts are abutted with each other.

Preferably, the accommodating groove has a concave arc structure, the matching convex portion has a convex arc structure, and the accommodating groove is located inside the outer convex portion.

Preferably, the housing assembly further comprises a first housing and a third housing, the aforementioned several housings are second housings, and a plurality of the second housings are respectively located on the longitudinal outer side of the first housing, the The third casing is located outside the second casing.

Preferably, the first casing and the third casing also include a plate body, side walls located at both lateral ends of the plate body and fixing bars, and end walls are also provided on the longitudinal outer side of the third casing, so The end wall is connected to a pair of side walls of the third housing.

Preferably, the width of the first casing is greater than the width of the second casing, and the longitudinal ends of the first casing pass through a synchronization assembly with the second casing and the third casing located on the longitudinal outer side respectively. Live hinged together.

Preferably, the side walls and end walls of the first, second and third shells are formed under the plate to form an assembly space, and the assembly space can be combined with the second and third shells. Fold and bend to form a curved space.

Preferably, the side wall and the end wall protrude upward to form a flange on the upper surface of the board body, and the flange forms a mounting space for installing the flexible screen on the upper surface of the board body, so The longitudinal sides of the first casing are provided with avoidance gaps connecting the assembly space and the mounting space.

Preferably, the synchronizing assembly comprises hinge bases that are hinged to each other and fixed to the fixing bars of the housing in a one-to-one correspondence, a plurality of hinge groups and damping chains stacked with the hinge bases, and the hinge bases , The hinge group and the damping chain are fixed one by one through the shaft parts.

Preferably, the hinge base includes a base portion, a fixing portion formed on a lateral side of the base portion, a screw hole formed on the fixing portion, an engaging groove is formed on the inner side of the base portion, and the base portion One end of the longitudinal direction is protruded and formed with an occlusal block, a plurality of occlusal blocks of the hinge base and the occlusal groove are mutually occluded, the damping chain includes a plurality of damping blocks connected end to end, the damping blocks pass through the hinge base and the hinge group The shaft parts are fixed, each of the hinge bases is fixed on the corresponding fixing strip of the casing through the fixing portion, and the engaging block and the engaging groove rotate according to a certain rotation track to make the folding and bending of the casing. Rotate according to a predetermined trajectory.

In order to solve the above technical problems, the present application also provides a smart bracelet, which includes the aforementioned housing assembly.

In the present application, several pieces of shells are linked together by synchronizing components to realize folding and bending, and a mounting space for mounting a flexible screen is formed on the upper part of the shell, and the shell is used for the strap part of the smart bracelet. The screen size of the smart bracelet can be increased.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

1 is a perspective view of the foldable hand-worn device of the present application in an unfolded state;

2 is a perspective view of the housing of the application;

3 is a perspective view of the housing of the application and the synchronization assembly therein;

4 is a perspective view of the cover body of the application;

FIG. 5 is a perspective view of the cover body of the application from another angle and a partial enlarged view thereof;

6 is a perspective view of a second cover of the cover of the application;

7 is a perspective view of a first casing of the casing of the application;

8 is a perspective view of a second casing of the casing of the application;

FIG. 9 is a combined view of the second housing and the second cover of the present application;

10 is a perspective view of the foldable hand-worn device of the present application in a folded state;

11 is a perspective view of a first cover body and a plurality of second cover bodies of the cover body of the application in a folded state;

FIG. 12 is a perspective view of several second casings of the casing of the application in a folded state;

13 is a perspective view of the synchronization assembly of the present application in an unfolded state;

14 is a perspective view of the synchronization assembly of the present application from another angle;

15 is a perspective view of the synchronization assembly of the present application in a folded state;

16 is a perspective view of a hinge seat of the synchronization assembly of the present application;

FIG. 17 is a front view of several hinge seats of the synchronization assembly of the present application in an unfolded state;

FIG. 18 is a perspective view of several groups of occlusal blocks of the synchronization assembly of the present application in an unfolded state;

FIG. 19 is a perspective view of the first engaging block of the synchronization assembly of the present application;

20 is a perspective view of the second and third hinge groups of the synchronization assembly of the present application;

FIG. 21 is a perspective view of the damping mechanism of the synchronization assembly of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments.

In the present application, the X direction shown in FIG. 1 is the front in the front-rear direction (vertical direction), the Y direction is the right side in the left-right direction (horizontal direction), and the Z direction is the upper side in the vertical direction (vertical direction).

Referring to FIGS. 1 to 4 , the foldable hand-worn device of the present application includes a foldable casing 10 , a cover 20 assembled on the casing 10 , and a synchronization assembly 30 for controlling the synchronous folding of the casing 10 . , Assemble the electronic components (not shown) in the assembly space 40 enclosed by the casing 10 and the cover 20 and the flexible screen (not shown) mounted on the upper surface of the casing 10 .

Referring to FIGS. 4 to 6 and 11, the cover body 20 includes a first cover body 20a, a plurality of second cover bodies 20b located on both longitudinal sides of the first cover body 20a, and a second cover body located on the outermost side. The third cover body 20c outside the 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 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 lateral direction, and the fixing seat 22 is formed to protrude 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 formed on the top surface of the fixing portion 222 and protruding upward from the top surface of the fixing portion 222 . out of the positioning column 223. The longitudinal width of the fixing portion 222 is greater than the longitudinal width of the extending portion 221 , and an escape space 225 is formed between the fixing portion 222 and the upper surface of the cover plate 21 .

The first cover body 20a further includes first arc surface portions 23 respectively opened on the upper surfaces of the longitudinal sides of the cover plate 21. The upper surface of the first cover plate 20a extends upward in the transverse direction to form two pairs of In the fixing base 22, the fixing portions 222 of the two pairs of fixing bases 22 are arranged in opposite directions. The longitudinal width of the first cover body 20a is larger than that of the second and third cover plates 20b and 20c, and the lateral widths of the first cover plate 20a and the second and third cover plates 20b and 20c are the same.

The lower surface of the second cover plate 20b facing the first cover plate 20a is provided with a second arc surface portion 24 matching the first arc surface portion 23, and the upper surface of the side away from the first cover plate 20a is provided. The first arc surface portion 23 is formed on the surface. A second arc surface portion 24 is provided on the lower surface of the third cover plate 20c on the side close to the second cover plate 20b. The first arc surface portion 23 is a concave arc surface, and the second arc surface portion 24 is a convex arc surface.

When the cover body 20 is unfolded, the edge of the second arc surface portion 24 overlaps above the edge of the first arc surface portion 23 . In the folded state, the second arc portion 24 is completely received into the first arc portion 23 so that the cover body 20 is in a bent and folded state.

Please continue to refer to FIG. 1 to FIG. 3 , FIG. 7 to FIG. 9 , and FIG. 12 , the casing 10 includes a first casing 10 a and a plurality of second casings 10 b located on both longitudinal sides of the first casing 10 a and a pair of third casings 10c located outside the second casing 10b. The first shell 10a, the second shell 10b, and the third shell 10c all include a plate body 11, side walls 12 integrally formed on the lateral ends of the plate body 11, and two sides disposed on the bottom surface of the plate body 11. Row fixing bars 13 . The upper surface of the plate body 11 is a horizontal surface, and end walls 15 are integrally formed at both longitudinal ends of the third housing 10c. The side walls 12 and the end walls 15 include upwardly protruding flanges 127 and 151 . , the flanges 127, 151 of the first, second, and third housings 10a, 10b, 10c surround a mounting space 50 for attaching the flexible screen. The side wall 12 and the end wall 15 surround the assembly space 40 for assembling electronic components under the plate body 11 . Two sets of fixing holes 131 and 132 are respectively arranged in the lateral direction of each row of the fixing bars 13 .

A receiving groove 121 and a button hole 19 extending through the side wall 12 in the lateral direction are respectively defined on both longitudinal sides of the side wall 12 of the first housing 10 a. The longitudinal ends of the board body 11 are also provided with avoidance gaps 14 . The avoidance gaps 14 communicate with the mounting space 50 and the assembly space 40 , and transmit the signals in the assembly space 40 to the mounting space through cables. Flexible screen within 50.

The side wall 12 of the second casing 10b protrudes from the side facing the first casing 10a with a mating protrusion 122 that matches the accommodating groove 121. The side wall 12 of the second casing 10b The accommodating groove 121 is opened on the side away from the first housing 10a. The side wall 12 of the third casing 10c is protruded from the side facing the second casing 10b with a matching protrusion 122 that matches the receiving groove 121 .

The lateral outer surface of the side wall 12 of the second housing 10b is formed with an outer convex portion 123 protruding in the lateral direction relative to the matching protrusion 122 , and the accommodating groove 121 is located inside the outer convex portion 123 . Both the accommodating groove 121 and the matching convex portion 122 have a structure with a narrow upper portion and a wide lower portion, and the outer convex portion 123 has a structure with a wide upper portion and a narrow lower portion. Both the accommodating groove 121 and the matching convex portion 122 have matching arc structures. Specifically, the accommodating groove 121 is a concave arc structure, and the matching convex portion 122 is a convex arc structure. When fully matched, the matching protrusions 122 are completely accommodated in the accommodating grooves 121 .

Referring to FIGS. 1 to 12 , the cover body 20 is in a one-to-one correspondence with the housing 10 , and the first, second, and third cover bodies 20 a , 20 b , 20 c are respectively associated with the first 1. The second and third casings 10a, 10b, and 10c are in one-to-one correspondence, and the number of the second cover 20b and the second casing 10b is determined according to factors such as the length of the product.

The cover body 20 is mounted under the casing 10 and closes the assembly space 40 under the cover. The fixing seat 22 of the cover body 20 is connected to the fixing bar 13 of the housing 10 by screws. Specifically, the fixing seat 22 is positioned on a group of fixing holes 132 of the fixing bar 13, The bottom of the cover body 20 is screwed into the screw holes 224 on the bottom surface of the fixing base 22 , and the fixing hole 132 also includes a screw hole passing through and a positioning hole matching with the positioning post 223 . 20 is first positioned on the fixing bar 13 and then the cover body 20 and the housing 10 are fixed by screws.

When assembled and in the unfolded state, the bottom edge of the second arc surface portion 24 of the second cover body 20b of the cover body 20 overlaps with the upper end of the first arc surface portion 23 of the first cover body 20a The bottom end edge of the second arc surface portion 24 of the second cover body 20b overlaps with the upper end edge of the first arc surface portion 23 of the other second cover body 20b, and so on. The bodies 20b are linked to each other. When the foldable hand-worn device is folded and closed, the second arc portion 24 is completely matched to the bottom of the first arc portion 23 to achieve folding and bending.

The second casing 10b of the casing 10 is located on both longitudinal sides of the first casing 10a, respectively, and the matching protrusions 122 on the longitudinal side of the second casing 10b are accommodated with the first casing 10a. The groove 121 is matched with the current second case 10b and the accommodating groove 121 on the opposite side of the matching protrusion 122 is matched with the matching protrusion 122 of the other second case 10b, and so on. The bodies 10b are linked and matched, and the fitting protrusions 122 of the third housing 10c are matched with the receiving grooves 121 of the outermost second housing 10b. When in the unfolded state, the end edge of the matching protrusion 122 is located in the accommodating groove 121 , and there is a gap between the lower parts of the outer protrusion 123 . When in the closed state, the mating protrusions 122 are completely accommodated in the accommodating grooves 121 , and the outer protrusions 123 are in contact with each other. Bend and fold.

In specific implementation, the first, second and third housings 10a, 10b, 10c of the housing 10 are linked together by the synchronizing assembly 30, and the synchronizing assembly 30 is fixed on the fixing bar 13 a fixing hole 131. At the same time, the cover body 20 is fixedly connected to the fixing bar 13 of the housing 10 through the fixing seat 22 .

In one embodiment, two longitudinal sides of the side wall 12 of the first housing 10a may be provided with matching protrusions 122, and the corresponding accommodating grooves 121 of the second housing 10b and the matching protrusions 122 is set in an exchange position, and the mating protrusions 122 of the second housing 10c are replaced with accommodating grooves 121 .

In one embodiment, the longitudinal sides of the first cover 20a are provided with a second arc surface 24 of a convex arc structure, and the first and second arc surfaces 23 on the longitudinal sides of the second cover 20b, 24 is arranged in a reverse position, and the second arc surface portion 24 of the third cover body 20c is replaced with the first arc surface portion 23 .

13 to 21 , the synchronization assembly 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 the hinge bases 35 . The seat 31 , the first hinge group 32 , the second hinge group 33 , the third hinge group 34 and the damping chain 35 are combined with the shaft member 36 .

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 bar 314 protruding from the bottom of the lateral second side of the base portion 311 , A screw hole (not numbered) penetrating the fixing portion 312 in the up-down direction, a positioning post 313 protruding downward from the bottom of the fixing portion 312 , and an engaging groove 316 formed on the second lateral side of the base portion 311 , an engaging block 317 protruding from the first longitudinal side of the base portion 311 and a shaft hole 315 transversely passing through the base portion 311 .

The engaging groove 316 includes a narrow opening portion 3162 formed on the second longitudinal side of the base portion 311 and a wide groove portion 3161 extending upward in an arc shape from the opening portion 3162 . The wide groove portion 3161 is formed to extend from the opening portion 3162 in an arc-shaped upward direction, 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 holding head 3172 formed at the free end of the arc strip 3171. The holding head 3172 is wider than the opening 3162. The length of the portion 3172 is smaller 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 engaging blocks 317 of one hinge base 31 are snapped into the engaging grooves 316 of the other hinge base 31 from a lateral side, and the engaging blocks 317 can rotate in the engaging grooves 316 . By analogy, a plurality of the hinge bases 31 are hinged to each other to form a chain. When a plurality of the hinge bases 31 are in the unfolded state, the clamping head 3172 of the engaging block 317 is located in the wide groove portion 3161 The arc strip 317 is at least partially exposed outside the engaging groove 316; when in the folded and bent state, the holding head 3172 penetrates deep into the wide groove 3161, The arc-shaped bar 317 is completely received in the opening portion 3162 , and the arc-shaped bar 317 at least partially enters the wide groove portion 3161 .

The first hinge group 32 includes a plurality of first hinges, and each first hinge includes a first body portion 321, a first slot 324 formed at the bottom of the first body portion 321, and transversely extending through the first body portion 321. The shaft hole 325 of the main body portion 321 , the engaging groove 322 opened on the first main body portion 321 and opening to the first longitudinal side of the first main body portion 321 , and a protrusion from the longitudinal second side of the first main body portion 321 . The formed bite block 323 is removed. The engaging grooves 322 and the engaging blocks 323 of the first hinge element and the engaging grooves 316 and the engaging blocks 317 of the hinge base 31 have the same structure, and are not repeated here.

The second hinge group 33 includes a plurality of second hinge parts, each second hinge part includes a second main body part 331, a second slot 332 provided at the bottom of the second main body part 331, and transversely extending through the second hinge part 331 . The shaft hole 335 of the main body portion 331 , the hinge groove 333 formed on the first longitudinal side of the second main body portion 331 , and the hinge block 334 formed protruding from the longitudinal second side of the second main body portion 331 . A plurality of the second hinge members are hinged in the hinge groove 333 through the hinge block 334 on one side to form a chain structure.

The third hinge group 34 includes a plurality of third hinge parts, and the structures of the third hinge parts and the second hinge parts of the second hinge group 33 are completely the same, and are not repeated here.

The damping chain 35 includes a plurality of damping blocks, and each damping block includes a strip body 351 , a shaft hole 352 provided on the first longitudinal side of the strip body 351 , and a shaft hole 352 provided on the longitudinal second side of the strip body 351 . Damping groove 353 . The damping groove 353 includes a first position groove 354, a second position groove 355, a damping protrusion 356 located between the first and second position grooves 354, 355, The opening 357 of the second position groove 355 is described. The first and second position grooves 354 and 355 are communicated between the damping protrusions 356 . The damping block is formed by stacking and combining several damping sheets.

The synchronizing 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 several shaft parts 36 . The damping chain 35 is formed by connecting several damping blocks end to end, and the lengths of the second and third hinge parts are greater than the lengths of the hinge base 31 and the first hinge parts.

Specifically, the number of the hinge bases 31 is the same as the number of the first hinge parts of the first hinge group 32 . The sum of the numbers of the second and third hinge parts of the second and third hinge groups 33 and 34 is equal to the number of the first hinge parts, and the number of the damping blocks of the damping chain 35 is larger than that of the hinge base. The number of seats 31 is one less.

When assembling, firstly connect the engaging blocks 317 of the hinge bases 31 and the engaging grooves 316 to each other to form a hinge base 31 combined chain, and connect the engaging blocks 323 and the engaging grooves 322 of the first hinge parts to each other to form a combined chain. the first hinge group 32; the hinge blocks 334 of the second hinge parts and the hinge grooves 333 are hinged to form the second hinge group 33; the hinge blocks 334 of the third hinge parts are hinged with the hinge grooves 333 The third hinge group 33 is formed. Stack the combined chain of the hinge base 31, the first, second, and third hinge groups 32, 33, 34 together, and the combined chain of the hinge base 31 and the second hinge group 32 connect all The second and third hinge groups 33 and 34 are sandwiched between them. One of the hinge bases 31 corresponds to a first hinge member and a second or third hinge member, that is, the second and third hinge members are displaced one-to-one corresponding to a first hinge member and a hinge base 31 . A clamping strip 314 of the hinge base 31 is engaged in a first clamping slot 324 on a first hinge member and a second clamping slot 332 in a second hinge member or a third hinge member, so as to limit the position positional relationship between them. Then pass the shaft member 36 through the hinge base 31, the shaft holes 315, 325, 335 of the first, second and third hinge members, and finally put the damping chain 35 into the end of the shaft member 36 and pass through The nut is locked, 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 member 36 to lock, and then the shaft hole 352 of the first damping block is connected to the first position of the second damping block. A position slot 355 is overlapped and sleeved into the free end of the second shaft member 36 to lock, and so on, 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 sleeved into the last shaft member 36, and the unevenness of the two damping blocks at the front and rear in the lateral direction is adjusted by means of spacers to keep the two rows of damping blocks in the longitudinal direction flat.

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 group 32 are both wide at the top and narrow at the bottom, and have a substantially trapezoidal structure. In the initial state, there is a gap between the base parts 311, and the shaft member 36 is located in the first position groove 355 of the damping block; when folded, a plurality of the hinge bases 31, a plurality of the first position The engaging blocks 317, 323 of the hinges penetrate deep into the engaging grooves 316, 322, so that the longitudinally inclined sides of the base portion 311 of the hinge base 31 are in contact with each other and bend, and the same is true for the first hinge group 32; The hinge blocks 334 of the second and third hinge groups 33 and 34 penetrate deep into the hinge grooves 333 ; and the shaft member 36 moves from the first position groove 355 of the damping block to the second position groove 354 , And after the damping force is applied to the shaft member 36 through the damping protrusion 35, the shaft member 36 moves from the first position groove 355 to the second position groove 354, so that the two damping blocks are placed between the two damping blocks. The overlapping distance is increased, so as to achieve folding and apply a damping force to the shaft member 36 so that it is in the second position slot 354 .

The hinge base 31 and the engaging grooves 316 and 322 of the first hinge group 32 are respectively arranged oppositely; the hinge grooves 333 of the second and third hinge groups 33 and 34 are oppositely arranged, and the hinge base 31. The engaging grooves 316, 322 of the first hinge group 32 cooperate with the engaging blocks 317, 323; the hinge grooves 333 of the second and third hinge groups 33, 34 cooperate with the The track groove is used to control the synchronous folding of the synchronous assembly 30 , and a second or third hinge piece is dislocated and corresponding to each hinge base 31 to realize synchronous folding during folding.

A plurality of second casings 10b are linked on both longitudinal sides of the first casing 10a of the casing 10 of the foldable hand-worn device of the present application, and a third casing is linked on the longitudinal outer sides of the two second casings 10b on the longitudinal sides body 10c; the second and third housings 10b and 10c on both sides of the longitudinal direction are respectively linked together by two pairs of synchronizing assemblies 30, and the synchronizing assemblies 30 are connected to the casing 10 through the fixing portion 312 of the hinge base 31. The fixing holes 132 on the fixing bars 13 on the bottom surface realize corresponding fixing, and the two longitudinal ends of the first casing 10a are respectively fixed to the hinge base 31, and the synchronization assembly 30 will not pass through the first casing in the longitudinal direction. 10a, so that the first casing 10a has more width and lower space.

The casing 10 and the cover body 20 are fixed in a one-to-one correspondence. The cover body 20 includes a fixing seat 22 fixed with the first casing 10a. The fixing seat 22 extends upward and is fixed to the fixing bar. In the fixing hole 131 of the 13 , the cover body 20 is linked together by the synchronization assembly 30 through the housing 10 .

The housing 10 of the present application can also be used in other fields, and it is only necessary to link several of the housings 10 together through a simple hinge, for example, the synchronizing assembly 40 is replaced by a simple hinge; The cover body 20 can also be used in other fields by being directly linked together by a simple hinge. The foldable hand-worn device may be a smart bracelet, where the smart bracelet also includes a smart watch.

The above descriptions are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (11)

1. The utility model provides a casing subassembly, its characterized in that, includes a plurality of mutually supported casings and will be a plurality of casing activity hinge joint's synchronous subassembly together, every casing include at the plate body that the transverse direction extends, integrated into in the lateral wall at the horizontal both ends of plate body and be formed at the fixed strip of casing lower surface, synchronous subassembly is fixed in order to connect a plurality of on the fixed strip of casing below the casing is as an organic whole, the lateral wall inboard includes holding tank, cooperation lug that set up respectively in vertical both sides and certainly the lateral wall is along the convex outer convex part in horizontal outside, one the cooperation convex part of casing cooperate in the holding tank of another casing, the holding tank with the cooperation convex part is under the narrow structure, outer convex part is under the narrow structure.

2. The housing assembly of claim 1, wherein when unfolded, the outer edges of the mating projections are positioned within the receiving slots and at least partially overlap, and wherein there is a gap between the outer projections, and when folded, the mating projections fully enter the receiving slots and overlap in the transverse direction, and wherein the longitudinal sides of the outer projections abut each other.

3. The housing assembly of claim 2 wherein said receiving groove is a concave arcuate structure and said mating projection is a convex arcuate structure, said receiving groove being located inboard of said male projection.

4. The housing assembly of claim 3 further comprising a first housing, a third housing, said plurality of housings being second housings, a plurality of said second housings being respectively longitudinally outboard of said first housings, said third housing being outboard of said second housings.

5. The housing assembly of claim 4, wherein the first and third housings also include a plate, side walls at both lateral ends of the plate, and a fixing strip, and the third housing further includes an end wall at a longitudinal outer side thereof, the end wall connecting a pair of side walls of the third housing.

6. The housing assembly of claim 5, wherein the width of the first housing is greater than that of the second housing, and both longitudinal ends of the first housing are movably hinged to the second housing and the third housing respectively through the synchronizing assembly.

7. The housing assembly of claim 6, wherein the side walls and end walls of the first, second and third housings enclose an assembly space below the plate, and the assembly space is formed as a bending space along with the folding and bending of the second and third housings.

8. The casing assembly of claim 7, wherein the side walls and the end walls protrude upward to form a flange on the upper surface of the plate, the flange is defined on the upper surface of the plate to form a mounting space for mounting the flexible screen, and the first casing is provided with avoiding gaps on two longitudinal sides thereof to communicate the assembly space with the mounting space.

9. The housing assembly according to claim 8, wherein said synchronizing assembly includes a hinge base hinged to each other and fixed to a fixing bar of said housing in one-to-one correspondence, a plurality of hinge groups and a damping chain overlapped with said hinge base, hinge groups and damping chain being fixed one by a shaft member.

10. The housing assembly according to claim 9, wherein the hinge base includes a base portion, a fixing portion formed on one lateral side of the base portion, and a screw hole opened on the fixing portion, a locking groove opened on an inner side of the base portion, a locking block formed at one longitudinal end of the base portion in a protruding manner, a plurality of locking blocks of the hinge base are locked with the locking groove, the damping chain includes a plurality of damping blocks connected end to end, the damping blocks are fixed to the hinge base and the hinge set by a shaft member, each hinge base is fixed to a fixing strip of the corresponding housing by the fixing portion, and the locking block and the locking groove rotate according to a predetermined rotation trajectory to rotate the folding curve of the housing according to a predetermined trajectory.

11. A smart bracelet comprising a housing assembly according to any one of claims 1 to 10.

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