Antenna transmission device

1. An antenna transmission device comprising:

a shell;

an output unit slidingly arranged at the shell and including a rack; and

an input unit partially arranged in the shell, meshing with the rack of the output unit, and configured to drive the output unit to move linearly,

wherein the shell includes:

a snap slot, the input unit being at least partially arranged in the snap slot to maintain a movement range of the input unit; and

a sliding rail arranged at an upper end of the snap slot, the output unit being arranged at the sliding rail to maintain a linear movement range of the output unit.

2. The transmission device of claim 1 , wherein the input unit includes:

a fixed rotation transmission member arranged in the shell and meshing with the rack of the output unit; and

an input motor coupled to the fixed rotation transmission member and configured to drive the fixed rotation transmission member.

3. The transmission device of claim 2 , wherein:

the fixed rotation transmission member includes a spiral transmission member having a first tooth profile; and

two corresponding first stop surfaces are formed by cutting a start position and a stop position of a spiral line of the first tooth profile, respectively.

4. The transmission device of claim 3 , wherein:

the rack of the output unit includes a shape matching the first tooth profile; and

two corresponding second stop surfaces respectively disposed at two ends of the rack are configured to fill tooth gaps corresponding to the fixed rotation transmission member.

5. The transmission device of claim 4 , wherein:

in response to the spiral transmission member driving the rack to move linearly to an end of the rack, one of the two corresponding first stop surfaces of the spiral transmission member cooperates with one of the two corresponding second stop surfaces of the rack to stop the spiral transmission member and the rack from moving.

6. The transmission device of claim 3 , wherein the spiral transmission member includes a worm, a screw, or a ball screw.

7. The transmission device of claim 2 , wherein the input unit further includes:

an adaptor assembly arranged in the shell, coupled to the fixed rotation transmission member to cause the input motor to be coupled to the fixed rotation transmission member through the adaptor assembly, the adaptor assembly including:

a first gear coupled to the input motor; and

a second gear coupled to the fixed rotation transmission member and meshing with the first gear;

wherein:

when being driven by the input motor, the first gear is configured to rotate and drive the second gear that meshes with the first gear to rotate and drive the fixed rotation transmission member to move.

8. The transmission device of claim 2 , wherein a size of the fixed rotation transmission member is smaller than a size of the output unit.

9. The transmission device of claim 1 , wherein the output unit further includes an assembly structure coupled to the rack.