JPH0471006U

JPH0471006U -

Info

Publication number: JPH0471006U
Application number: JP11446090U
Authority: JP
Priority date: 1990-10-31
Filing date: 1990-10-31
Publication date: 1992-06-23

Description

[Brief explanation of the drawing]

図面は、本考案に係るパワーアンテナ用アクチ
ユエータにおける異物浸入防止構造の実施例を示
したものであつて、第１図はパワーアンテナ用ア
クチユエータを示す断面図、第２図は従来例を示
す同上断面図である。図中、１はケーシング、１ａはケース本体、１
ｂはカバーケース、１ｃはリブ、３は支持板、７
は中間ギア、８はクラツチ機構、９はドライブギ
ア、９ｃ，９ｄはリブ、１０はドライブコード、
１２は巻取ドラム、である。 The drawings show an embodiment of the foreign matter intrusion prevention structure in the actuator for a power antenna according to the present invention, in which FIG. 1 is a sectional view showing the actuator for a power antenna, and FIG. 2 is a sectional view of the same as the above example showing a conventional example. It is a diagram. In the figure, 1 is the casing, 1a is the case body, 1
b is a cover case, 1c is a rib, 3 is a support plate, 7
is an intermediate gear, 8 is a clutch mechanism, 9 is a drive gear, 9c, 9d are ribs, 10 is a drive cord,
12 is a winding drum.

Claims

[Scope of utility model registration request]

The casing to which the base end of the antenna pole is fixed is formed by a case body having a drive chamber with one side open and a cover that closes the drive chamber opening, and the drive chamber has a case body and a cover at both ends. a support shaft supported by the support shaft, an intermediate gear rotatably supported by the support shaft and interlocked with motor drive, and a shaft rotatably supported by a boss formed on the side facing the cover of the intermediate gear. a clutch device disposed on the outer periphery of the boss portion to cut off power transmission from the intermediate gear to the drive gear in the event of an overload, and a gear portion on the outer periphery of the drive gear whose tip is connected to the antenna pole. In the actuator for a power antenna, the actuator for a power antenna is equipped with a drive cord that meshes with the drive cord, and an annular winding drum having a substantially U-shaped cross section and an opening on the side facing the cover to wind and store the drive cord. Ribs that overlap each other in the radial direction are provided on the side surface of the outer diameter portion of the winding drum and the opposing surface of the cover, respectively, while the inner circumferential piece of the winding drum and the outer circumferential surface of the intermediate gear side of the drive gear overlap each other in the radial direction. At the same time, a rib protruding toward the inner circumferential surface of the take-up drum is formed in a portion of the drive gear that overlaps with the take-up drum. A structure for preventing foreign matter intrusion in an actuator for a power antenna, characterized in that the structure is configured to prevent foreign matter from entering into the center side of a drive chamber via the side surfaces of the gears.