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CN-224215008-U - Projection device

CN224215008UCN 224215008 UCN224215008 UCN 224215008UCN-224215008-U

Abstract

The application relates to the technical field of projection, and provides a projection device, which comprises a projection host and a cloud deck, wherein the cloud deck comprises a base, a first driving mechanism, a first connecting rod and a second driving mechanism, the first driving mechanism is arranged in the base, the first connecting rod is provided with a first end and a second end, the first end is connected with the first driving mechanism, the second end is provided with the projection host, the first driving mechanism is used for driving the first connecting rod to rotate so as to drive the projection host to swing around the first end, the second driving mechanism is used for driving the projection host to rotate relative to the second end, so that the projection host always keeps a horizontal posture in the swinging process, the projection host is provided with a shutdown position and a startup position, the projection host is folded on the base in the shutdown position, and the projection host is separated from the base and stretches out to a target projection position in the startup position. The application can reduce the whole volume of the cradle head, realize large-stroke movement of the projection host, reduce the whole volume during shutdown and reduce the risk of collision of the projection host.

Inventors

  • LI WEI
  • WAN XIULONG

Assignees

  • 青岛海信激光显示股份有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (10)

  1. 1. A projection apparatus, comprising: a projection host; The cradle head comprises a base, a first driving mechanism, a first connecting rod and a second driving mechanism, wherein the first driving mechanism is arranged in the base, the first connecting rod is provided with a first end and a second end, the first end is connected with the first driving mechanism, the second end is provided with the projection host, the first driving mechanism is used for driving the first connecting rod to rotate so as to drive the projection host to swing around the first end, and the second driving mechanism is used for driving the projection host to rotate relative to the second end so as to enable the projection host to always keep a horizontal posture in the swing process; The projection host is provided with a shutdown position and a startup position, wherein the projection host is folded on the base in the shutdown position, and the projection host is separated from the base and extends to a target projection position in the startup position.
  2. 2. The projection device of claim 1, wherein the second drive mechanism comprises: the second motor is fixed in the projection host; The second transmission part is arranged in the projection host and is respectively connected with the output shaft of the second motor and the second end, and the second motor is used for driving the projection host to rotate relative to the second end through the second transmission part.
  3. 3. The projection device of claim 2, wherein the second transmission member comprises: the worm is connected with the output shaft of the second motor; The worm wheel is connected with the worm in a meshed manner; and the first connecting shaft is fixedly connected with the worm wheel and the second end respectively.
  4. 4. The projection device of claim 2, wherein the second drive mechanism further comprises: The second detection component is arranged in the projection host and is used for detecting the rotation angle of the projection host.
  5. 5. The projection device of claim 1, wherein the second drive mechanism comprises: The first fixed wheel is fixed in the base and is coaxially arranged with the first end; The second connecting shaft penetrates through the second end and can rotate relative to the second end, and one end of the second connecting shaft is fixedly connected with the projection host; The second fixed wheel is fixedly connected to the other end of the second connecting shaft and corresponds to the first fixed wheel; The second synchronous belt is wound on the first fixed wheel and the second fixed wheel.
  6. 6. The projection device of claim 5, wherein the second drive mechanism further comprises: The second tensioning component is arranged on the first connecting rod, is positioned between the first fixed wheel and the second fixed wheel and is used for adjusting the tightness of the second synchronous belt.
  7. 7. The projection apparatus according to any one of claims 1 to 6, wherein the first driving mechanism includes: The first motor is fixed in the base; The first transmission part is arranged in the base and is respectively connected with the output shaft of the first motor and the first end, and the first motor is used for driving the first connecting rod to rotate through the first transmission part.
  8. 8. The projection device of claim 7, wherein the first transmission member comprises a driving wheel, a driven wheel and a first synchronous belt wound on the driving wheel and the driven wheel, the driving wheel is connected with an output shaft of the first motor, and the driven wheel is connected with the first end; The first driving mechanism further comprises a first tensioning component arranged in the base, and the first tensioning component is connected with the first motor and used for adjusting the position of the first motor relative to the driven wheel so as to adjust tightness of the first synchronous belt.
  9. 9. The projection device of claim 7, wherein the first drive mechanism further comprises: and the first detection component is arranged in the base and is used for detecting the rotation angle of the first connecting rod.
  10. 10. The projection device of any one of claims 1 to 6, wherein the cradle head further comprises: The second connecting rod is oppositely distributed with the first connecting rod along the length direction of the base at intervals, two ends of the second connecting rod are respectively connected with the base and the projection host in a rotating mode, and the second connecting rod can synchronously rotate along with the first connecting rod.

Description

Projection device Technical Field The application relates to the technical field of projection, in particular to a projection device. Background The cradle head of the existing projection equipment adopts a motor to drive a screw rod to drive a projection host to move back and forth relative to a display screen on a wall in a telescopic manner so as to project. In order to realize the projection of large-size pictures, the existing tripod head needs to be matched with a lead screw with a large stroke (namely a longer lead screw) so that the projection machine can extend out for a longer distance relative to a display screen, but the length of the tripod head provided with the lead screw along the front-back expansion direction is correspondingly prolonged, so that the whole volume of the tripod head is increased. This results in difficulty in keeping the holder structure compact while pursuing a larger projection range (i.e., a larger stroke). Disclosure of utility model The embodiment of the application aims to provide a projection device, which aims to solve the contradiction problem that the large stroke and miniaturization of the existing projection tripod head are difficult to be compatible. In order to achieve the above purpose, the application adopts the following technical scheme: Some embodiments of the application provide a projection apparatus, comprising: a projection host; The cradle head comprises a base, a first driving mechanism, a first connecting rod and a second driving mechanism, wherein the first driving mechanism is arranged in the base, the first connecting rod is provided with a first end and a second end, the first end is connected with the first driving mechanism, the second end is provided with the projection host, the first driving mechanism is used for driving the first connecting rod to rotate so as to drive the projection host to swing around the first end, and the second driving mechanism is used for driving the projection host to rotate relative to the second end so as to enable the projection host to always keep a horizontal posture in the swing process; The projection host is provided with a shutdown position and a startup position, wherein the projection host is folded on the base in the shutdown position, and the projection host is separated from the base and extends to a target projection position in the startup position. In some embodiments, the second drive mechanism comprises: the second motor is fixed in the projection host; The second transmission part is arranged in the projection host and is respectively connected with the output shaft of the second motor and the second end, and the second motor is used for driving the projection host to rotate relative to the second end through the second transmission part. In some embodiments, the second transmission member comprises: the worm is connected with the output shaft of the second motor; The worm wheel is connected with the worm in a meshed manner; and the first connecting shaft is fixedly connected with the worm wheel and the second end respectively. In some embodiments, the second drive mechanism further comprises: The second detection component is arranged in the projection host and is used for detecting the rotation angle of the projection host. In some embodiments, the second drive mechanism comprises: The first fixed wheel is fixed in the base and is coaxially arranged with the first end; The second connecting shaft penetrates through the second end and can rotate relative to the second end, and one end of the second connecting shaft is fixedly connected with the projection host; The second fixed wheel is fixedly connected to the other end of the second connecting shaft and corresponds to the first fixed wheel; The second synchronous belt is wound on the first fixed wheel and the second fixed wheel. In some embodiments, the second drive mechanism further comprises: The second tensioning component is arranged on the first connecting rod, is positioned between the first fixed wheel and the second fixed wheel and is used for adjusting the tightness of the second synchronous belt. In some embodiments, the first drive mechanism comprises: The first motor is fixed in the base; The first transmission part is arranged in the base and is respectively connected with the output shaft of the first motor and the first end, and the first motor is used for driving the first connecting rod to rotate through the first transmission part. In some embodiments, the first transmission component comprises a driving wheel, a driven wheel and a first synchronous belt wound on the driving wheel and the driven wheel, the driving wheel is connected with an output shaft of the first motor, and the driven wheel is connected with the first end; The first driving mechanism further comprises a first tensioning component arranged in the base, and the first tensioning component is connected with the first motor and used for adjusting the positio