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EP-4496297-B1 - EXPANDABLE/CONTRACTIBLE MECHANISM FOR DISPLAY DEVICE, AND DISPLAY DEVICE

EP4496297B1EP 4496297 B1EP4496297 B1EP 4496297B1EP-4496297-B1

Inventors

  • WANG, ZONGYUAN
  • ZHU, HONG
  • CHEN, Sitong
  • ZHAO, LIJUAN

Dates

Publication Date
20260506
Application Date
20221209

Claims (14)

  1. A retractable mechanism for a display device, comprising: a first housing (30), a second housing (40), and a drive assembly (50), the first housing (30) being movably connected to the second housing (40); wherein the drive assembly (50) is disposed in the first housing (30) and is connected to the first housing (30); the retractable mechanism has a connected state and a disconnected state, in the connected state, the second housing (40) is connected to the drive assembly (50) and is able to extend or retract relative to one side of the first housing (30) under driving by the drive assembly (50), and in the disconnected state, the second housing (40) is separated from the drive assembly (50); and characterized in that the retractable mechanism is configured to be switched from the connected state to the disconnected state in response to an acceleration of the second housing (40) moving relative to the first housing (30) being greater than a predetermined value.
  2. The retractable mechanism according to claim 1, wherein the second housing (40) comprises a movable housing body (41) and a push rod (42), wherein the movable housing body (41) is movably connected to the first housing (30), one end of the push rod (42) is connected to the movable housing body (41), and the other end of the push rod (42) is disposed in the first housing (30) and is connected to the drive assembly (50).
  3. The retractable mechanism according to claim 2, wherein a strip-shaped slide slot (42a) is defined in the push rod (42) has, wherein a length direction of the strip-shaped slide slot (42a) is consistent with a retraction direction of the second housing (40), an end, away from the movable housing body (41), of the strip-shaped slide slot (42a) has a lock portion (42b), and the lock portion (42b) is connected to the strip-shaped slide slot (42a); and the drive assembly (50) comprises a fixed portion (51) and a movable portion (52), the fixed portion (51) is connected to the first housing (30), the movable portion (52) is movably connected to the fixed portion (51), the movable portion (52) is snap-fitted into the lock portion (42b) in the connected state, and in the disconnected state, the movable portion (52) is in the strip-shaped slide slot (42a) and is in clearance fit with the strip-shaped slide slot (42a).
  4. The retractable mechanism according to claim 3, further comprising two catch bumps (421) that are disposed on opposite side walls the strip-shaped slide slot (42a), and the catch bumps (421) are disposed at a junction of the strip-shaped slide slot (42a) and the lock portion (42b).
  5. The retractable mechanism according to claim 4, wherein at least one of the two catch bumps (421) has a first ramped surface (421a), wherein the first ramped surface (421a) is on a side, close to the lock portion (42b), of the at least one of the two catch bumps (421).
  6. The retractable mechanism according to claim 5, wherein the at least one of the two catch bumps (421) further has a second ramped surface (421b), wherein the second ramped surface (421b) is disposed on a side, away from the lock portion (42b), of the at least one of the two catch bumps (421), and a slope of the ramped surface (421b) is less than a slope of the first ramped surface (421a).
  7. The retractable mechanism according to any one of claims 2 to 6, wherein the movable housing body (41) comprises a support portion (411) and a sliding support plate (412), wherein the sliding support plate (412) and the push rod (42) are connected to one side of the support portion (411), and the sliding support plate (412) comprises a plurality of comb support plates (413), wherein a length direction of each of the comb support plates (413) is consistent with a retraction direction of the second housing (40), and a plurality of sockets (31a) are defined in an outer surface of the first housing (30), wherein the plurality of comb support plates (413) are disposed in the plurality of sockets (31a).
  8. The retractable mechanism according to claim 7, wherein the comb support plate (413) comprises a strip portion (4131) and a spade portion (4132), wherein one end of the strip portion (4131) is connected to the support portion (411), the spade portion (4132) is disposed at the other end of the strip portion (4131) and connected to the strip portion (4131), and a distance from a side, away from a bottom surface of the socket (31a), of the spade portion (4132) to the bottom surface of the socket (31a) is less than a distance from a side, away from the bottom surface of the socket (31a), of the strip portion (4131) to the bottom surface of the socket (31a).
  9. The retractable mechanism according to claim 8, wherein a circuit board accommodation recess (31b) is further defined in the outer surface of the first housing (30), wherein the circuit board accommodation recess (31b) is disposed at end portions of the plurality of sockets (31a) and is connected to the end portions of the plurality of sockets (31a), and in response to the second housing (40) being retracted, the spade portion (4132) is received in the circuit board accommodation recess (31b).
  10. The retractable mechanism according to claim 8, wherein a friction-reducing layer (4133) is disposed on a side, away from the bottom surface of the socket (31a), of the spade portion (4132).
  11. The retractable mechanism according to claim 8, wherein a width of the spade portion (4132) is larger than a width of the strip portion (4131).
  12. The retractable mechanism according to claim 8, wherein a limiting groove (31c) is disposed on a side wall of the socket (31a), and the spade portion (4132) is disposed in the limiting groove (31c) to limit the sliding support plate (412).
  13. The retractable mechanism according to claim 8, wherein a thickness of the strip portion (4131) of the sliding support plate (412) is a same as a depth of the socket (31a).
  14. A display device, comprising a flexible display panel (10) and a retractable mechanism as defined in any one of claims 1 to 13, wherein the flexible display panel (10) is connected to the first housing (30) and the second housing (40).

Description

TECHNICAL FIELD The present disclosure related the field of display, and in particular to a retractable mechanism for a display device and a display device. BACKGROUND Flexible display panels are increasingly applied in a variety of display devices, such that functions such as folding and rolling are realized in the display device. In this way, the display devices adaptively have different display areas. US2020358887A1 discloses an electronic device with an slidable body. SUMMARY Embodiments of the present disclosure provide a retractable mechanism for a display device and a display device. The technical solutions are described as follows. According to some embodiments of the present disclosure, a retractable mechanism for a display device is provided. The retractable mechanism for a display device includes a first housing, a second housing and a drive assembly, the first housing being movably connected to the second housing; wherein the drive assembly is disposed in the first housing and is connected to the first housing;the retractable mechanism has a connected state and a disconnected state, in the connected state, the second housing is connected to the drive assembly and is able to extend or retract relative to one side of the first housing under driving by the drive assembly, and in the disconnected state, the second housing is separated from the drive assembly; andthe retractable mechanism is configured to be switched from the connected state to the disconnected state in response to an acceleration of the second housing moving relative to the first housing being greater than a predetermined value. In some embodiments, the second housing includes a movable housing body and a push rod, wherein the movable housing body is movably connected to the first housing, one end of the push rod is connected to the movable housing body, and the other end of the push rod is disposed in the first housing and is connected to the drive assembly. In some embodiments, a strip-shaped slide slot is defined in the push rod, wherein a length direction of the strip-shaped slide slot is consistent with a retraction direction of the second housing, an end, away from the movable housing body, of the strip-shaped slide slot has a lock portion, and the lock portion is connected to the strip-shaped slide slot; and the drive assembly includes a fixed portion and a movable portion, the fixed portion is connected to the first housing, the movable portion is movably connected to the fixed portion, the movable portion is snap-fitted into the lock portion in the connected state, and in the disconnected state, the movable portion is in the strip-shaped slide slot and is in clearance fit with the strip-shaped slide slot. In some embodiments, two catch bumps are disposed on opposite side walls the strip-shaped slide slot, and the catch bumps are at a junction of the strip-shaped slide slot and the lock portion. In some embodiments, the catch bump has a first ramped surface, the first ramped surface is on a side, close to the lock portion, of the catch bump. In some embodiments, the catch bump further has a second ramped surface, wherein the second ramped surface is on a side, away from the lock portion, of the catch bump, and a slope of the ramped surface is less than a slope of the first ramped surface. In some embodiments, the movable housing body includes a support portion and a sliding support plate, wherein the sliding support plate and the push rod are connected to one side of the support portion, and the sliding support plate includes a plurality of comb support plates, wherein a length direction of each of the comb support plates is consistent with a retraction direction of the second housing, and a plurality of sockets are defined in an outer surface of the first housing, wherein the plurality of comb support plates are disposed in the plurality of sockets. In some embodiments, the comb support plate includes a strip portion and a spade portion, wherein one end of the strip portion is connected to the support portion, the spade portion is disposed at the other end of the strip portion and connected to the strip portion, and a distance from a side, away from a bottom surface of the socket, of the spade portion to the bottom surface of the socket is less than a distance from a side, away from the bottom surface of the socket, of the strip portion to the bottom surface of the socket. In some embodiments, a circuit board accommodation recess is further defined in the outer surface of the first housing further, wherein the circuit board accommodation recess is disposed at end portions of the plurality of sockets and is connected to the end portions of the plurality of sockets, and in response to the second housing being retracted, the spade portion is received in the circuit board accommodation recess. In some embodiments, a friction-reducing layer is disposed on a side, away from the bottom surface of the socket, of the spade portion.