CN113824822A - Stretching assembly and mobile equipment - Google Patents

Abstract

A stretching assembly comprises a base plate, a synchronous motor fixed on the base plate, a first supporting piece fixed on the base plate, a second supporting piece movably meshed with the first supporting piece and a rotating shaft, wherein the base plate comprises a base body, a transverse side wall formed by upwards bending one transverse side of the base body, a pair of longitudinal side walls formed by upwards bending two longitudinal sides of the base body and a bent fixed end formed by outwards bending two ends of the transverse side wall, the two longitudinal ends of the rotating shaft are respectively fixed on the pair of bent fixed ends, the first supporting piece is fixed on the base plate, the first supporting piece is punched along the transverse direction to form a plurality of sliding grooves, the second supporting piece comprises a second supporting plate body, a plurality of matching strips formed by punching and fixed holes penetrating through the end parts of the matching strips, and the matching strips are limited in the sliding grooves through the action of rivets, the second support member is connected with the synchronous motor. The present application also includes a mobile device.

Description

Stretching assembly and mobile equipment

Technical Field

The present application relates to the field of communications, and more particularly, to a stretching assembly and a mobile device.

Background

At present, the variable screen width technology has begun to be applied to the mobile communication field, a large number of folding screen mobile phones have appeared on the market, the folding screen mobile phones are generally realized by adopting the hinge mechanism, the hinge mechanism needs to guarantee a certain radian under the screen bending state, and the screen bending position needs to keep a certain compensation between the inside and the outside, so that the screen damage is avoided. In order to meet the technical requirements, the hinge is provided with various devices such as a synchronous stabilizing device and the like, so that the number of components is very large, the cost is very high, and the stability is poorer than that of the conventional mobile phone with an unchangeable screen.

Meanwhile, the complexity of the folding hinge causes a large problem in large-scale mass production, excessive movement and rotating components restrict the stability of products, so that a mobile phone with a variable screen width starts to have a stretching structure, for example, the 201110062641.6 patent application in China discloses a mobile device with a variable screen width, the stretching of a screen is realized by fixing one end of the screen and winding and curling the other end of the screen. The technical scheme only discloses a concept of stretching the screen, and no specific solution is provided for ensuring the support, stretching synchronization and the like of the flexible screen.

Disclosure of Invention

In view of the above, it is desirable to provide a structurally stable stretching assembly and a mobile device that provide a variable screen width device.

In order to solve the technical problem, the stretching assembly comprises a base plate, a synchronous motor fixed on the base plate, a first supporting piece fixed on the base plate, a second supporting piece movably meshed with the first supporting piece and a rotating shaft, wherein the base plate comprises a base body, a transverse side wall formed by upwards bending the transverse side of the base body, a pair of longitudinal side walls formed by upwards bending the longitudinal two sides of the base body and a bending fixed end formed by outwards bending the two ends of the transverse side wall, the longitudinal two ends of the rotating shaft are respectively fixed on the pair of bending fixed ends, the first supporting piece is fixed on the base plate, the first supporting piece comprises a first supporting plate body and a plurality of sliding grooves formed by punching the first supporting plate body along the transverse direction, the second supporting piece comprises a second supporting plate body, a plurality of matching strips formed by punching and fixed holes penetrating through the end parts of the matching strips, the matching strip is movably limited in the sliding groove through a rivet, the second supporting piece is connected with the synchronous motor, and the synchronous motor drives the second supporting piece, the first supporting piece and the substrate to move in a separating mode.

Preferably, the first support member further includes a rotating shaft fitting portion formed by bending the first support plate laterally outward, a plurality of recessed portions formed by punching the first support plate downward, and a plurality of protruding portions for spacing the recessed portions, and the sliding groove is provided in the recessed portions along the lateral direction; the second support piece further comprises a transverse outer arc surface formed by bending the second support plate body transversely to the outer side, a longitudinal turnover wall formed by bending the second support plate body longitudinally at two ends downwards and a plurality of cutting holes at intervals of the matching strips, the matching strips are contained in the concave parts, and the cutting holes are kept away from the convex parts.

Preferably, a fixing hole is formed at the end of the matching strip in a penetrating manner, and the fixing hole is movably connected in the sliding groove through a rivet, so that the matching strip can move in the concave part along the transverse direction.

Preferably, the depressed part is including keeping away from the broad depressed part of first support piece one side and being close to the narrower depressed part of first support piece one side, the bellying is including being located the narrower bellying of the longitudinal side of broad depressed part and being located the broad bellying of the longitudinal side of narrower depressed part, the cooperation strip is including being located broad cooperation strip in the broad depressed part and certainly the narrower cooperation strip that the narrower depressed part removed, the width of faster cooperation strip is greater than the width of narrower depressed part is with spacing.

Preferably, the rotating shaft includes a shaft core, a bearing sleeved outside the shaft core, and a rotating housing sleeved outside the bearing and rotating, the rotating housing includes a first portion and a second portion, an outer diameter of the first portion is smaller than an outer diameter of the second portion, two longitudinal ends of the shaft core are respectively fixed to the pair of bending fixing ends, a rotating shaft attaching portion of the first supporting member is attached to the first portion of the rotating housing, and the rotating shaft attaching portion and the second portion of the rotating housing have the same arc surface.

Preferably, the top of the lateral side wall of the base plate is bent inwards to form a fixing piece, and the first support piece is fixed on the fixing piece.

Preferably, a limiting member is further fixed to the lower side of the second supporting member, the limiting member includes a fixing plate body attached to the lower side of the second supporting plate body, and a limiting portion extending from two longitudinal sides of the fixing plate body toward the first supporting member, and the second supporting member is matched with the base plate through the limiting member.

Preferably, a U-shaped folded portion and a sliding groove formed in the U-shaped folded portion are formed on a longitudinal side wall of the substrate, a limiting edge matched with the sliding groove is arranged at two longitudinal ends of the limiting portion to stabilize a mutual moving track of the limiting member and the substrate, the limiting portion is bent corresponding to the position of the synchronous motor to form a stressed connecting end, and the second supporting member is fixedly connected with the synchronous motor through the stressed connecting end.

Preferably, the limiting portion is formed with a lower concave portion by downward stamping, the lower concave portion penetrates through a limiting hole, a limiting column is fixed at a position corresponding to the base, and at least part of the limiting column extends into the limiting hole to limit the transverse movement distance of the limiting member.

Preferably, the stretching assembly further comprises an elastic moving member movably limited at the bottom side of the substrate and capable of moving in the transverse direction, a pair of transverse holes are formed in two longitudinal sides of the base body respectively, the elastic moving member comprises a connecting sheet body located on the lower side of the base body and a coil spring connecting portion bent upwards from the connecting sheet body and extending to the upper side of the transverse hole, a coil spring fixing portion is formed in the transverse inner side of the base body at a position corresponding to the coil spring connecting portion and bent upwards, a coil spring is wound and fixed in the coil spring fixing portion, and the coil spring comprises a stretching end connected to the coil spring connecting portion of the elastic moving member.

Preferably, the longitudinal two ends of the base body are located at the outer sides of the transverse holes and are upwards torn to form limiting edges, the longitudinal two ends of the connecting sheet body of the elastic moving part are folded to form U-shaped folding parts, sliding grooves are formed in the U-shaped folding parts, and the sliding grooves are clamped into the limiting edges to slide outwards to stabilize the moving track of the elastic moving part.

For solving above-mentioned technical problem, this application still provides a mobile device, include aforementioned tensile subassembly, be used for the installation tensile subassembly's casing and flexible screen, the casing is including the tensile shell of horizontal first tensile shell and the tensile shell of second of mutually supporting, the tensile shell of second is partly taken in at least in the first tensile shell, the tensile shell of second can lateral shifting in the first tensile shell, the base plate is fixed in the first tensile shell, second support piece is fixed in on the tensile shell of second, flexible screen is including being fixed in the stiff end in the horizontal outside of the tensile shell of second and reverse bending and elasticity are fixed in movable end on casing or the tensile subassembly.

According to the stretching assembly, the synchronous motor and the elastic moving piece are arranged on the base plate, the first supporting piece and the second supporting piece which are matched with each other are covered on the upper side of the base plate, the synchronous movement of the synchronous motor is used for controlling the synchronous movement of the first supporting piece and the second supporting piece in the transverse direction, the structure is stable, the stretching process is synchronous and controllable, and the screen is prevented from being damaged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a front perspective assembly view of a mobile device with variable screen width according to the present application in a retracted state;

FIG. 2 is a rear perspective assembly view of the variable screen width mobile device of the present application in a retracted state;

FIG. 3 is a front perspective assembly view of the mobile device with variable screen width according to the present application in an extended state;

FIG. 4 is a rear perspective assembly view of the mobile device with variable screen width according to the present application in an extended state;

FIG. 5 is an exploded perspective view of a variable screen width mobile device of the present application;

FIG. 6 is a longitudinal view of a variable screen width flexible screen of the present application;

FIG. 7 is a perspective assembly view of the variable screen width mobile device of the present application with the flexible screen removed;

FIG. 8 is an exploded perspective view of the stretching assembly and flexible screen of the variable screen width mobile device of the present application;

FIG. 9 is an exploded perspective view of a support assembly of the tension assembly of the present application;

FIG. 10 is a reverse side view of a second support member of the support assembly of the present application;

FIG. 11 is a perspective assembly view of the tension assembly of the present application in an expanded state;

FIG. 12 is a perspective assembly view of the stretching assembly of the present application with the second support member removed;

FIG. 13 is an opposite side view of FIG. 12;

FIG. 14 is a perspective view of a base plate of the tension assembly of the present application and a partial enlarged view thereof;

FIG. 15 is a perspective view of the elastomeric traveler of the tension assembly of the present application;

FIG. 16 is a perspective view of the tension assembly of the present application with the support assembly removed and a partial enlarged view thereof;

fig. 17 is a perspective combination view of the synchronous motor of the present application.

Description of reference numerals:

a flexible screen-10; a screen body-11; a fixed end-12; a movable end-13; an arcuate bend-14; a shell-20; a first stretching shell-21; a second stretching shell-22; a first housing-211; a first cavity-212; a first transverse outer wall-213; a first longitudinal wall-214; longitudinal wall-2141; a folded part-2142; a receiving tank-2143; a fixing portion-2144; fixing holes-2145, 2244, 313, 324, 3253; opening-215, 225; a second housing-221; a second lumen-222; a second transverse outer wall-223; a second longitudinal wall-224; an accommodated part-2241; an exposed portion-2242; decorative strips-216, 226; -a stretching assembly; a support assembly-30; a first support-31; a first support plate body-311; a shaft engaging portion-312; a recess-314; a wider recess-3141; a narrower recess-3142; -3143 a sliding groove; a boss-315; a narrower lobe-3151; a wider boss-3152; a second support-32; a second support plate-321; a lateral outboard arc-322; a longitudinal folded wall-323; a mating strip-325; narrower mating strips-3251; a wider mating strip-3252; a cut-out hole-326; wider cut-out hole-3261; narrower cut-out hole-3262; a limiting member-33; a fixed plate body-331; a limiting part-332; limiting edges-333, 47; a lower recess-334; a limiting hole-335; a stressed attachment end-336; a limiting column-337; a substrate-40; a substrate-41; a lateral sidewall-42; a fixing sheet-422; bending the fixed end-423; a card slot-424; longitudinal side walls-43; u-shaped folds-432, 72; runner components-433, 73; a chute-434,731; a transverse bore-44; a coil spring fixing part-45; coil spring-46; a tension end-461; a rotating shaft-50; a shaft core-51; bearing-52; a rotating housing-53; synchronous machine-60; bracket-61; a stent body-611; a bracket end wall-612,613; riveting hole-614; a screw rod-62; a sliding block-63; block-631; an epitaxial connection-632; -64 gear change box; motor-65; a motor stator-66; a first securing tab-661; a second fixing piece-662; a stabilizer bar-67; a resilient moving member-70; a connecting sheet-71; coil spring attachment-74.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

In the present application, as shown in fig. 1, the Y direction is the front-back direction, the X direction is the left-right direction, and the Z direction is the vertical direction.

Referring to fig. 1 to 6, the mobile device with variable screen width of the present application includes a stretchable casing 20, a stretching assembly a assembled in the casing 20, and a flexible screen 10 fixed on the stretching assembly a and the casing 20.

Referring to fig. 6 with emphasis, the flexible screen 10 is a display screen or a combination of a display screen and flexible glass. The flexible screen 10 comprises a screen body 11, and a fixed end 12 and a movable end 13 which are formed at two lateral sides of the screen body 11. The screen body 11 includes an upper screen body and a lower screen body, and a projection of the lower screen body in a vertical direction is completely covered by a projection of the upper screen body. The upper screen body and the lower screen body are separated by an arc-shaped bent part 14, the position of the arc-shaped bent part 14 can be changed in the transverse direction, and the relative width of the upper screen body and the lower screen body is adjusted, specifically, the lower screen body can be partially converted into the upper screen body to widen the upper screen body, and the upper screen body can also be partially converted into the lower screen body to narrow the upper screen body. The upper screen body is used as a display screen for displaying signals such as images, and the lower screen body is hidden in the shell and cannot display images.

The fixed end 12 is fixed to one lateral side of the housing 20, and the movable end 13 is elastically connected and fixed to an object having a certain elasticity, and the position change at the arc-shaped bent portion 14 maintains the adjustment of the position of the movable end by an elastic force. The fixed end 12 is an arc-shaped edge to realize a full screen mode.

In specific implementation, the upper surface and the lower surface of the flexible screen 10 are both provided with a protective film or a flexible glass material to protect the flexible screen 10 from being damaged in the stretching process.

Referring to fig. 3 and 5, the housing 20 includes a first stretching shell 21 and a second stretching shell 22 that is matched with the first stretching shell 21 to extend and retract. The first stretching shell 21 includes a first shell 211, a first lateral outer wall 213 extending upward from a first lateral side of the first shell 211, a pair of first longitudinal walls 214 extending upward from both longitudinal ends of the first shell 211, and an opening 215 formed at a second lateral side of the first shell 211. The first transverse outer wall 213 has a height lower than the height of the pair of first longitudinal walls 214. The first housing 211, the first transverse outer wall 213 and the pair of first longitudinal walls 214 enclose a first cavity 212.

The pair of first longitudinal walls 214 includes a longitudinal wall 2141, a folded portion 2142 formed by bending inward from the top of the longitudinal wall 2141, a receiving groove 2143 formed by hollowing out the longitudinal wall 2141 toward the second stretching shell 22, and a fixing portion 2144 formed on the longitudinal wall 2141 near the first transversal outer wall 213. The fixing portion 2144 is formed with a fixing hole 2145 extending through the longitudinal direction, and a concave surface is formed on the outer side surface of the longitudinal wall 2141 so that the fixing hole 2145 extends through the longitudinal wall 2141, and a decorative strip 216 for sealing the concave surface is disposed on the concave surface.

The second stretching shell 22 includes a second shell 221, a second transverse outer wall 223 extending upward from a second transverse side of the second shell 221, a pair of second longitudinal walls 224 extending upward from two longitudinal sides of the second shell 221, an opening 225 formed on a first transverse side of the second shell 221, and a second cavity 222 enclosed by the second shell 221, the second transverse outer wall 223 and the pair of second longitudinal walls 224.

The second vertical wall 224 includes a received portion 2241 inserted into the receiving groove 2143 of the first vertical wall 214, and an exposed portion 2242 located laterally outside the received portion 2241. The distance between the outer surfaces of the pair of received portions 2241 is not greater than the distance between the inner surfaces of the pair of receiving grooves 2143 so that the received portions 2241 are inserted into the receiving grooves 2143. The exposed portion 2242 and the first longitudinal wall 214 have substantially the same outer diameter and are engaged with each other in the inserted state. A plurality of fixing holes 2244 are formed in the pair of second longitudinal walls 224 in a penetrating manner, a recessed structure is formed on the outer side surface of the second longitudinal wall 224, and the recessed structure is covered with the decorative strip 226. The decorative strips 216, 226 function to cover the securing holes 2145, 2244 to conceal the securing holes and the fasteners therein.

The receiving groove 2143 of the first longitudinal wall 214 has a U-shaped structure, and can limit the received portion 2241 of the second longitudinal wall 224 to be movable and stretchable only in the transverse direction.

As shown in fig. 7 to fig. 16, the stretching assembly a includes a base plate 40 fixed on the first stretching shell 21 at two longitudinal sides, a rotating shaft 50 installed at one side of the base plate 40, a supporting assembly 30, an elastic moving member 70 and a synchronous motor 60.

Referring to fig. 14 and 16, the substrate 40 is manufactured by a metal stamping process, and the substrate 40 includes a base 41, a lateral sidewall 42 formed by bending upward from one lateral side of the base 41, and a longitudinal sidewall 43 formed by bending upward from two longitudinal sides of the base 41. The two longitudinal ends of the lateral side wall 42 are bent outwards to form bent fixing ends 423, the top of the lateral side wall 42 is bent along the inner lateral side to form fixing pieces 422, and a clamping groove 424 is formed on the lateral side wall 42 in a penetrating manner. A space for assembling the rotating shaft 50 is formed between the pair of bent fixing ends 423, and both ends of the shaft core of the rotating shaft 50 are fixed to the bent fixing ends 423, respectively. The rotating shaft 50 includes a shaft core 51, a bearing 52 sleeved outside the shaft core 51, and a rotating housing 53 sleeved outside the bearing. The rotating housing 53 includes two portions 531,532 having different outer diameters, and the outer diameter of the second portion 532 is larger than the outer diameter of the first portion 531.

The longitudinal side wall 43 includes a U-turn 432 in the middle, a chute member 433 formed in the U-turn in the assembled state, and a chute 434 formed on the chute member 433 in the transverse direction. A fixing hole 431 for fixing to the first stretching shell 21 is formed through one side of the longitudinal side wall 43 close to the rotating shaft 50, the base plate 40 is riveted and fixed with a fixing hole 2145 on the first longitudinal wall 214 of the first stretching shell 21 through the fixing hole 431, and after the riveting is completed, the decorative strip 216 covers the outer side of the first longitudinal wall 214 to cover the rivet.

A pair of transverse holes 44 are formed in the longitudinal two sides of the base 41 along the transverse direction, and a limiting edge 47 is formed by tearing the base 41 upwards between the transverse holes 44 and the longitudinal side wall 43. The side, away from the rotating shaft 50, of the transverse hole 44 is bent to form a coil spring fixing portion 45, the coil spring fixing portion 45 is of a U-shaped structure, a coil spring 46 is fixed in the coil spring fixing portion 45, the coil spring 46 is wound in the coil spring fixing portion 45 through a pin, and the coil spring 46 includes a stretching end 461 extending out towards one side of the transverse hole 44.

An adapter plate 34 is fixed on the fixing plate 422 of the transverse side wall 42 of the base plate 40, and the adapter plate 34 is locked on the fixing plate 422 through a rivet. The fixing piece 422 is provided with a hook fastened in the fastening groove 424.

Referring to fig. 12, 13, 15 and 16, the elastic moving member 70 includes a connecting sheet 71, U-shaped folded portions 72 formed by folding and curling the connecting sheet 71 from two longitudinal ends thereof, a chute member 73 formed or assembled in the U-shaped folded portions 72, a chute 731 formed in the chute member 73, and a coil spring connecting portion 74 formed by bending the connecting sheet 71 toward a pair of coil springs 46. The tension end 461 of the coil spring 46 is fixed to the coil spring attachment portion 74.

A pair of the synchronous motors 60 are fixed between a pair of the transverse holes 44 by rivets or screws, and the distance between the pair of the synchronous motors 60 is greater than half the longitudinal length of the base 41. When the synchronous motor 60 is fixed on the base 41, the elastic moving member 70 is buckled from the bottom side of the base 41 near the rotating shaft 50, so that the sliding groove 731 in the U-shaped folding portion 72 is sleeved on the limiting edge 47 of the base 41 to slide, and the coil spring connecting portion 74 extends into the transverse hole 44 and can move transversely in the transverse hole 44. Subsequently, the adaptor piece 34 is fixed on the fixing piece 422 of the lateral sidewall 42 of the base plate 40 to lock the flexible moving piece 70 against withdrawing, specifically, the adaptor piece 34 may be bent at a position corresponding to the limiting edge 47 to form a structure such as a stop to prevent the flexible moving piece 70 from withdrawing. After the movable elastic member 70 is assembled, the stretching end of the coil spring 46 is fixed in the coil spring connecting portion 74 of the movable elastic member 70, and an elastic force is applied to the movable elastic member 70 through the coil spring 46.

Referring to fig. 16 and 17, the synchronous motor 60 includes a bracket 61 fixed on the base 41, a gear box 64 and a motor 65 fixed at one end of the bracket 61 in the transverse direction, a sliding block 63 disposed at a first end of the bracket 61, and a screw 62 screwed on the sliding block 63 and connected to the gear box 64.

The holder 61 includes a pair of holder bodies 61 at both longitudinal sides, a holder end wall 612,613 connecting the pair of holder bodies 61 at both lateral ends, and a riveting hole 614 formed extending from the holder body 61 or the holder end wall 612,613. The staking hole 614 is formed in both of the holder end walls 612,613 to secure the holder 61 to the surface of the base 41 of the base plate 40. The first end wall 612,613 and the second end wall 612,613 are respectively provided with a hole structure for limiting the screw rod 62, and a bearing is arranged in the hole structure to enable the screw rod 62 to rotate freely. A space is provided between the pair of bracket bodies 61 to leave a space for the lead screw 62. The sliding block 63 moves between a pair of the bracket end walls 612,613, and the sliding block 63 includes a block 631 screwed to the outside of the lead screw 62, and an extending connecting portion 632 extending from one longitudinal side of the block 631 to the outside of the bracket body 61. One end of the screw rod 62 is limited on the bearing of the bracket end wall 612, and the other end of the screw rod 62 is limited on the bearing of the bracket end wall 613 and is connected with the gear box 64, when the motor 65 operates, the gear box 64 is driven, the gear box 64 drives the screw rod 62 to rotate, and when the screw rod 62 rotates, the sliding block 63 outside the screw rod 62 is forced to move between the pair of bracket end walls 612,613 of the bracket body 61 along the transverse direction through threads.

The bracket end wall 612 and the sliding block 63 are respectively provided with a pair of shaft hole structures beside the screw rod 62, a stabilizer bar 67 is inserted into the pair of shaft hole structures, and the stabilizer bar 67 is used for stabilizing the sliding stability of the sliding block 63, so as to prevent the sliding block 63 from shaking, and the sliding block 63 slides along the screw rod 62 and the stabilizer bar 67. The vertical outside of motor 65 is still fixed or the welding has the stationary blade 66, the stationary blade 66 is including being fixed in first stationary blade 661 on the motor 65 lateral wall and certainly first stationary blade 661 extends and follows the second stationary blade 662 that vertical bending formed, second stationary blade 662 through laser welding weld in the base member 41 surface is in order to fix the motor 65 avoids the motor 65 rocks.

Referring to fig. 8 to 12 and 16, the supporting assembly 30 includes a first supporting member 31 fixed on the base plate 40 and located at a first lateral side of the base plate 40, a second supporting member 32 fixed on the second stretching shell 22 and located at a second lateral side of the base plate 40, and a limiting member 33 fixed at a lower side of the second supporting member 32 and connected and fixed to a sliding block 63 of the synchronous motor 60. In a specific implementation, the limiting member 33 and the second supporting member 32 may be an integral structure, and the limiting member 33 does not need to be separately disposed and fixed on the second supporting member 32 by welding.

The first supporting member 31 includes a first supporting plate 311, a rotating shaft attaching portion 312 formed by bending one lateral side of the first supporting plate 311, a plurality of concave portions 314 formed by punching and recessing along the lateral direction, and a plurality of convex portions 315 disposed at intervals with the concave portions 314.

The recess 314 includes a wider recess 3141 on the inner side, a narrower recess 3142 on the lateral outer side, and a sliding groove 3143 extending through the narrower recess 3141 in the lateral direction. The protrusion 315 includes a narrower protrusion 3151 spaced from the wider recess 3141 and a wider protrusion 3152 spaced from the narrower recess 3142. The support plate 311 is provided with a plurality of fixing holes 313 at positions close to the rotating shaft fitting portion 312. The first supporting member 31 is riveted and fixed on the adaptor sheet 34 of the base plate 40 through the fixing hole 313, so that the first supporting member 31 and the base plate 40 are integrated. In an embodiment, the first supporting member 31 may also be fixed on the base plate 40 by welding.

The rotating shaft fitting part 312 fits to the first part 531 of the rotating shell 53 of the rotating shaft 50, and after the fitting, the outer surface of the rotating shaft fitting part 312 and the second part 532 of the rotating shell 53 are located on the same arc surface.

The second supporting member 32 includes a second supporting plate 321, a lateral outer arc surface 322 formed by bending the lateral outer side of the second supporting plate 321, a longitudinal folded wall 323 formed by bending the longitudinal two ends of the second supporting plate 321 downward, a plurality of cut-off holes 326 formed in the second supporting plate 321 along the lateral direction, and a fitting strip 325 formed between the cut-off holes 326 at intervals.

The second supporting plate 321 and the longitudinal folded wall 323 are provided with a plurality of fixing holes 324. The plurality of cut-out holes 326 correspond to the protruding portions 315 of the first supporting member 31, and the plurality of matching bars 325 correspond to the recessed portions 314 of the first supporting member 31. Specifically, the cut-out holes 326 include a wider cut-out hole 3261 formed along a transverse direction and a narrower cut-out hole 3262 formed on a side of the wider cut-out hole 3261 facing the first support 31, and correspondingly, the fitting bar 325 includes a narrower fitting bar 3251 spaced from the wider cut-out hole 3261 and a wider fitting bar 3252 located at an end of the fitting bar 325, and a fixing hole 3253 is formed through the wider fitting bar 3252.

The limiting member 33 is welded and fixed on the lower surface of the second supporting member 32, and includes a fixing plate body 331 welded on the lower surface of the second supporting plate body 321, a limiting portion 332 formed by extending the longitudinal two ends of the fixing plate body 331 toward the direction of the first supporting member 31, a limiting edge 333 formed by folding the longitudinal edge of the limiting portion 332, a downward concave portion 334 formed by downward stamping and protruding the limiting portion 332, a limiting hole 335 formed by vertically penetrating through the downward concave portion 334, and a stressed connecting end 336 formed by downward bending and tearing the transverse end portion of the limiting portion 332.

A limiting column 337 is further fixed to the base 41 at a position corresponding to the limiting hole 335, and a portion of the limiting column 337 is at least partially located inside the limiting hole 335 to limit a moving distance of the second support 32 in the transverse direction. The force-receiving connecting end 336 is fixed to the extending connecting portion 632 of the sliding block 63 of the synchronous motor 60. In specific implementation, the second supporting member 32 is placed on the first supporting member 31 from above, the fitting bar 325 is received in the recess 314, the wider fitting bar 325 is limited in the wider recess 3141, the fixing hole 3253 corresponds to the sliding groove 3143, and the wider fitting bar 3252 is limited on the upper side of the sliding groove 3143 by a pin. And the pin can slide in the sliding groove 3143. Subsequently, the limiting member 33 is placed on the lower surface of the second supporting member 32 for fixing, which may be riveting or welding.

The assembly and the working principle of the mobile equipment are as follows:

providing a base plate 40, and loading the elastic moving part 70 upwards from the bottom side of the base plate 40, specifically, the U-shaped folded part 72 of the elastic moving part 70 enters the upper side of the base body 41 from the side of the base body 41 close to the transverse side wall 42, the crimping connecting part 74 enters the transverse hole 44, and then, the sliding groove 731 in the U-shaped folded part 72 is sleeved outside the limiting edge 47 of the base plate 40 to slide; in this process, the movable end 13 of the flexible screen 10 may be adhered and fixed to the connecting sheet 71 of the elastic moving member 70, the movable end 13 may be completely adhered to the bottom side of the connecting sheet 71, and the flexible screen 10 may be adhered again when other parts are assembled.

Subsequently, the synchronous motor 60, the coil spring 46 and the rotating shaft 50 are mounted on the substrate 40, specifically, the synchronous motor 60 is fixed at a position corresponding to the base 41 by rivets or laser welding, the coil spring 46 is wound in the coil spring fixing portion 45 of the substrate 40 by pins, and the stretching end 461 of the coil spring 46 is connected to the coil spring connecting portion 74 of the elastic moving member 70 by pins, so that the elastic stretching of the elastic moving member 70 by the coil spring 46 is realized. The rotating shaft 50 is fixed between the pair of bent fixing portions 423 of the substrate 40, and both ends of the shaft core 51 of the rotating shaft 50 in the longitudinal direction are respectively fixed to the pair of bent fixing portions 423.

Inserting the limiting member 33 from one side of the substrate 40, inserting the limiting edges 333 at two longitudinal sides of the limiting member 33 into the sliding slots 434 at two longitudinal sides of the substrate 40 to slide, and then fixing the limiting posts 337 on the surface of the base 41 from the limiting holes 335; in the process, the adaptor sheet 34 is riveted or welded to the fixing sheet 422 on the lateral side wall 42 of the base plate 40, and the adaptor sheet 34 can limit the elastic moving member 70 from retreating from the base plate 40. The stressed connecting end 336 of the limiting member 33 and the extending connecting portion 632 of the synchronous motor 60 are fixed together by rivets.

Then, the assembly of the first support member 31 and the second support member 32 is placed above the substrate 40, the rotating shaft attaching portion 312 of the first support member 31 is attached to the outside of the first portion 531 of the rotating shaft housing 53, the first support member 31 and the adapter sheet 34 are fixed together to fix the first support member 31 and the substrate 40 together, and the second support member 32 and the limiting member 33 are riveted or welded together.

Finally, the fixed end 12 of the flexible screen 10 is fixed to the second transverse outer wall 223 of the second stretching shell 22, and the movable end 13 is fixed to the connecting sheet 71 of the elastic moving member 70 in an adhering manner. The second drawing member 22 is inserted into the first drawing member 21 in the transverse direction, and specifically, the received portion 2241 of the second longitudinal wall 224 is inserted into the receiving groove 2143 of the first longitudinal arm 214 of the first drawing member 21. The assembled stretching assembly a is placed in the cavities 212 and 222 of the first stretching shell 21 and the second stretching shell 22, the base plate 40 is fixed on the fixing portion 2144 of the first longitudinal wall 214 of the first stretching shell 21 by screws, and the longitudinal folded wall 323 of the second supporting member 32 is fixed on the second longitudinal wall 224 of the second stretching shell 22 by screws.

The working principle of the mobile equipment with the variable screen width is as follows:

when the first stretching shell 21 and the second stretching shell 22 are relatively folded, the first supporting member 31 and the second supporting member 32 are in a state of being overlapped at most in the vertical direction, and at this time, the engaging strip 325 of the second supporting member 32 is completely accommodated in the recess 314 of the first supporting member 31. When the mobile device needs to be unfolded, the synchronous motor 60 is started to drive the screw rod 62 to rotate, the sliding block 63 moves away from one side of the rotating shaft 50, the sliding block 63 drives the limiting piece 33, the second supporting piece 32 and the second stretching shell 22 to move towards the direction away from the first stretching shell 21, at this time, the flexible screen 10 pulls the elastic moving piece 70 to enable the elastic moving piece 70 to move to one side of the rotating shaft 50 under the elastic force of the coil spring 46, and therefore the width of the flexible screen 10 on one side of the main screen is increased; the first supporting member 31 and the second supporting member 32 are away from each other and widened, and the limiting column 337 limits the maximum moving distance of the limiting member 33.

According to the flexible screen and the mobile equipment with the variable screen width, the fixed end 12 and the movable end 13 are respectively arranged on the two transverse sides of the screen body 11, the fixed end 12 is fixed, the movable end 13 is elastically fixed on the lower side of the upper screen body, and the width of the upper screen body is changed through the elastic change of the movable end 13, so that the variable screen width is realized; the flexible screen does not need to be wound, and the occupied space is small.

In the stretching assembly a of the present application, the synchronous motor 60 and the elastic moving element 70 are arranged on the base plate 40, and then the first supporting member 31 and the second supporting member 32 which are matched with each other are covered on the upper side of the base plate 40, and the synchronous movement of the pair of synchronous motors 60 is used to control the synchronous movement of the first supporting member 31 and the second supporting member 32 in the transverse direction.

The support assembly 30 of the present application changes the width of the support assembly 30 by providing a first support 31 and a second support 32 which are relatively movable, a mutually overlapped portion is provided between the first support 31 and the second support, a recess 314 and a sliding groove 3143 are provided on the first support 31, and a matching strip 325 matched with the recess 314 is provided on the second support 32 to realize that the upper surfaces of the first support 31 and the second support 32 are coplanar and support the flexible screen 10 in the same plane, so as to avoid plane damage.

This application synchronous machine 60 is equipped with support end wall 612, 613's support 61 through setting up horizontal both ends support end wall 613 the horizontal one side of support end wall 613 sets up motor 65 set up sliding block 63 between support end wall 612,613, erect in through lead screw 62 between support end wall 612,613, sliding block 63 spiro union outside lead screw 62, motor 65 drives when lead screw 62 rotates, make sliding block 63 removes in the transverse direction to the drive is fixed in respectively two object synchronous motion on sliding block 63 and the support 61.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A stretching assembly is characterized by comprising a base plate, a synchronous motor fixed on the base plate, a first supporting piece fixed on the base plate, a second supporting piece movably meshed with the first supporting piece and a rotating shaft, wherein the base plate comprises a base body, a transverse side wall formed by upwards bending one transverse side of the base body, a pair of longitudinal side walls formed by upwards bending two longitudinal sides of the base body and a bent fixed end formed by outwards bending two ends of the transverse side wall, two longitudinal ends of the rotating shaft are respectively fixed on the pair of bent fixed ends, the first supporting piece is fixed on the base plate, the first supporting piece comprises a first supporting plate body and a plurality of sliding grooves formed by punching the first supporting plate body along the transverse direction, the second supporting piece comprises a second supporting plate body, a plurality of matching strips formed by punching and fixed holes penetrating through the end parts of the matching strips, the matching strip is movably limited in the sliding groove through a rivet, the second supporting piece is connected with the synchronous motor, and the synchronous motor drives the second supporting piece, the first supporting piece and the substrate to move in a separating mode.

2. The stretching assembly as set forth in claim 1, wherein the first support member further comprises a shaft engaging portion bent laterally outward from the first support plate, a plurality of recessed portions punched downward along the first support plate, and a plurality of protruding portions separating the recessed portions, the sliding groove being provided in the recessed portions in the lateral direction; the second support piece further comprises a transverse outer arc surface formed by bending the second support plate body transversely to the outer side, a longitudinal turnover wall formed by bending the second support plate body longitudinally at two ends downwards and a plurality of cutting holes at intervals of the matching strips, the matching strips are contained in the concave parts, and the cutting holes are kept away from the convex parts.

3. The tension assembly as recited in claim 2, wherein said engagement strip has an end portion formed with a fastening hole therethrough, said fastening hole being movably connected to said slide channel by a rivet such that said engagement strip is laterally movable within said recess.

4. The stretching assembly as set forth in claim 3, wherein said depressions include wider depressions on a side distal from said first support and narrower depressions on a side proximal to said first support, said protrusions include narrower protrusions on longitudinal sides of said wider depressions and wider protrusions on longitudinal sides of said narrower depressions, said engagement strips include wider engagement strips in said wider depressions and narrower engagement strips moving from said narrower depressions, said faster engagement strips have a width greater than a width of said narrower depressions for retention.

5. The stretching assembly as claimed in claim 4, wherein the shaft includes a core, a bearing disposed around the core, and a rotating housing disposed around the bearing and rotating around the bearing, the rotating housing includes a first portion and a second portion, an outer diameter of the first portion is smaller than an outer diameter of the second portion, two longitudinal ends of the core are respectively fixed to the pair of bent fixing ends, the shaft engaging portion of the first supporting member engages with the first portion of the rotating housing, and the shaft engaging portion is co-cambered with the second portion of the rotating housing.

6. The stretching assembly as set forth in claim 5, wherein the top of the lateral side wall of the base plate is bent inward to form a fixing piece to which the first supporting member is fixed.

7. The stretching assembly as claimed in claim 6, wherein a limiting member is further fixed to the lower side of the second supporting member, the limiting member includes a fixing plate body attached to the lower side of the second supporting plate body, and limiting portions extending from two longitudinal sides of the fixing plate body toward the first supporting member, and the second supporting member is engaged with the base plate through the limiting member.

8. The stretching assembly as claimed in claim 7, wherein a U-shaped folded portion and a sliding slot formed in the U-shaped folded portion are formed on a longitudinal side wall of the base plate, a limiting edge engaged with the sliding slot is provided at both longitudinal ends of the limiting portion to stabilize a mutual moving track of the limiting member and the base plate, the limiting portion is bent corresponding to the position of the synchronous motor to form a stressed connecting end, and the second supporting member is connected and fixed with the synchronous motor through the stressed connecting end.

9. The stretching assembly as set forth in claim 7, wherein said limiting portion is punched downward to form a lower recess, said lower recess is formed with a limiting hole, a limiting post is fixed to said base at a position corresponding to said limiting hole, and said limiting post at least partially extends into said limiting hole to limit the lateral movement distance of said limiting member.

10. The stretching assembly as claimed in claim 1, wherein the stretching assembly further comprises a movable member movably retained at the bottom side of the base plate and movable in a transverse direction, a pair of transverse holes are respectively formed at both longitudinal sides of the base body, the movable member comprises a connecting piece body located at the lower side of the base body and a coil spring connecting portion bent upward from the connecting piece body and extending to the upper side of the transverse hole, a coil spring fixing portion bent upward at a position corresponding to the coil spring connecting portion is formed at the inner side of the base body in the transverse direction, a coil spring is wound and fixed in the coil spring fixing portion, and the coil spring comprises a stretching end connected to the coil spring connecting portion of the movable member.

11. The stretching assembly as claimed in claim 10, wherein the longitudinal ends of the base body located outside the transverse holes are upwardly torn to form limit edges, the longitudinal ends of the connecting sheet body of the elastic moving member are folded to form U-shaped folded portions, and sliding grooves are formed in the U-shaped folded portions and are clamped into the limit edges to slide so as to stabilize the moving track of the elastic moving member.

12. A mobile device, comprising a stretching assembly as claimed in any one of claims 1 to 11, a housing for mounting the stretching assembly, and a flexible screen, wherein the housing comprises a first stretching shell and a second stretching shell which are laterally matched with each other, the second stretching shell is at least partially received in the first stretching shell, the second stretching shell is laterally movable in the first stretching shell, the substrate is fixed in the first stretching shell, the second supporting member is fixed on the second stretching shell, and the flexible screen comprises a fixed end fixed on the lateral outer side of the second stretching shell and a movable end which is reversely bent and elastically fixed on the housing or the stretching assembly.

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