JPH0471005U

JPH0471005U -

Info

Publication number: JPH0471005U
Application number: JP11445990U
Authority: JP
Priority date: 1990-10-31
Filing date: 1990-10-31
Publication date: 1992-06-23
Anticipated expiration: 2005-02-08
Also published as: JPH075689Y2

Description

[Brief explanation of drawings]

図面は、本考案にかかるパワーアンテナ装置に
おける駆動機構のウオームホイール支持構造の実
施例を示したものであつて、第１図はパワーアン
テナ装置の機構を示す全体側面断面図、第２図は
同背面図、第３図は同正面図、第４図はセツテイ
ングプレートの正面図、第５図Ａ，Ｂ，Ｃはそれ
ぞれウオームホイールの正面図、断面図、背面図
、第６図はパワーアンテナ装置機構の従来例を示
す縦断面図、第７図は同背面図、第８図カムギア
の従来例を示す斜視図である。図中、１はケーシング、１ｂはドライブ室、１
ｃは電気室、１ｄは凹陥部、１ｅは貫通孔、１ｆ
はガイド筒、３はウオームホイール、３ａ，３ｄ
は支軸部、３ｂはカムギア、３ｃはホイールギア
部、１０はセツテイングプレート、１２は検知ホ
イールである。 The drawings show an embodiment of the worm wheel support structure of the drive mechanism in the power antenna device according to the present invention, in which FIG. 1 is an overall side sectional view showing the mechanism of the power antenna device, and FIG. Figure 3 is a front view of the same, Figure 4 is a front view of the setting plate, Figures 5 A, B, and C are a front view, cross-sectional view, and rear view of the worm wheel, respectively, and Figure 6 is a power antenna. FIG. 7 is a rear view of the same, and FIG. 8 is a perspective view of a conventional example of a cam gear. In the figure, 1 is the casing, 1b is the drive chamber, 1
c is an electric chamber, 1d is a recessed part, 1e is a through hole, 1f
is the guide tube, 3 is the worm wheel, 3a, 3d
3b is a cam gear, 3c is a wheel gear, 10 is a setting plate, and 12 is a detection wheel.

Claims

[Scope of utility model registration request]

The worm gear provided on the motor output shaft rotates the operating gear in conjunction with the rotation of the worm wheel, which moves the drive cord in and out of the casing, thereby expanding and contracting the antenna pole. In doing so, the casing is divided into a drive room and an electrical room by a partition wall, and the drive room contains the worm wheel, the operating gear, a cord case in which the drive cord is stored in a spiral shape, and a cord case containing the worm wheel and the drive cord. In the power antenna device, the worm wheel interior portion of the drive chamber is provided with a partition, and a power transmission mechanism for the operating gear is installed inside the power antenna device, and a rotation detection device for detecting the rotation of the worm wheel is disposed in the electrical room. The wall has a concave shape with a step-like protrusion toward the electric chamber, and the worm wheel has a support shaft that protrudes toward the drive chamber, a small-diameter cam gear, and a cam gear that protrudes toward the electric chamber. The cam gear is integrally formed with a support shaft portion having a diameter larger than this, and the cam gear is positioned on the electric chamber side through a through hole formed at the bottom of the recessed part of the partition wall. It is rotatably supported on a setting plate that is integrally fixed to the opening of the wall recess, and the electric chamber side support shaft is attached to the bottom of the partition wall recess with a rib-like structure that protrudes toward the drive chamber side. Rotatably supported on the inner peripheral surface of the guide tube,
In addition to supporting the rotation of the worm wheel around its axis, the support in the worm wheel thrust direction is provided by connecting the side surface of the electric chamber of the wheel gear section, which has a larger diameter than the support shaft on the electric chamber side, to the bottom surface of the recessed part of the partition wall. A worm wheel support structure for a drive mechanism in a power antenna device, characterized in that it is configured to be supported.