JPH0434128U

JPH0434128U -

Info

Publication number: JPH0434128U
Application number: JP7610990U
Authority: JP
Priority date: 1990-07-19
Filing date: 1990-07-19
Publication date: 1992-03-19

Description

[Brief explanation of the drawing]

第１図は、本考案の実施例の回転椅子のロツク
装置正面図、第２図は、第１図の平面図、第３図
は、第１図の分解後方斜視図、第４図は、支持プ
レートの受台に対するロツク解放状態を示す平面
図、第５図は、支持プレートの受台に対する一方
への回動状態を示す平面図、第６図は、支持プレ
ートの受台に対するロツク状態を示す平面図、第
７図は、支持プレートの受台に対する他方への回
動状態を示す平面図、第８図は、支持プレートの
受台に対する別位置のロツク状態を示す平面図で
ある。１……受台、２……支持プレート、３……係止
溝、４……揺動レバー、５……係合ローラ、６…
…引張コイルバネ、６ａ……一端、６ｂ……他端
、７……テーパー部、８……嵌合孔、９……支持
管、１０……通孔、１２……支柱、１３……ボル
ト、１４……ブラケツト、１５……貫通孔、１６
……係合孔、１７……操作部、１８……膨出部、
１９……支持孔、２０……係止孔、２１……ボル
ト、２２……座金、２３……ナツト、２４……支
持ピン。 FIG. 1 is a front view of a locking device for a rotary chair according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an exploded rear perspective view of FIG. 1, and FIG. FIG. 5 is a plan view showing the support plate in the unlocked state relative to the cradle; FIG. 5 is a plan view showing the support plate in the pivoted state relative to the cradle; FIG. FIG. 7 is a plan view showing a rotation state of the support plate relative to the pedestal in the other direction, and FIG. 8 is a plan view showing a locked state of the support plate at another position relative to the pedestal. DESCRIPTION OF SYMBOLS 1... pedestal, 2... support plate, 3... locking groove, 4... rocking lever, 5... engaging roller, 6...
...Tension coil spring, 6a...one end, 6b...other end, 7...tapered part, 8...fitting hole, 9...support tube, 10...through hole, 12...post, 13...bolt, 14...Bracket, 15...Through hole, 16
...Engagement hole, 17...Operation part, 18...Bulging part,
19... Support hole, 20... Locking hole, 21... Bolt, 22... Washer, 23... Nut, 24... Support pin.

Claims

[Scope of utility model registration request]

A support plate is rotatably supported on a circular pedestal, a plurality of locking grooves opening outward are formed on the outer peripheral edge of the pedestal, and a swing lever is rotatably supported on the support plate. Further, an engaging body that fits into the locking groove is provided on the swinging lever, and urging means is provided between the support plate and the swinging lever to bias the engaging body toward the locking groove. A locking device for a rotating chair, which is characterized by being provided with a locking device.