JPH03161814A - Rotary lock device - Google Patents

Rotary lock device

Info

Publication number
JPH03161814A
JPH03161814A JP30177889A JP30177889A JPH03161814A JP H03161814 A JPH03161814 A JP H03161814A JP 30177889 A JP30177889 A JP 30177889A JP 30177889 A JP30177889 A JP 30177889A JP H03161814 A JPH03161814 A JP H03161814A
Authority
JP
Japan
Prior art keywords
coil spring
coil
spring
force
inner diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP30177889A
Inventor
Juji Kojima
Koichi Yamamuro
Original Assignee
Nhk Spring Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nhk Spring Co Ltd filed Critical Nhk Spring Co Ltd
Priority to JP30177889A priority Critical patent/JPH03161814A/en
Publication of JPH03161814A publication Critical patent/JPH03161814A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To prevent the generation of 'play' by covering a coil spring for locking the rotation of a rotor with an elastic member generating tested finding force in the coil diameter direction of the coil spring. CONSTITUTION:A constant load type spiral spring 5 is spirally formed so as to have an inner diameter (d) smaller than the outer diameter of the coil spring 4 combined with core bars 2, 3 in a free state, externally inserted around the coil spring 4 so that its inner diameter is gradually expanded, and after the external insertion, stuck to the coil spring 4. Since the spiral spring 5 is worked with the same curvature over the whole length, force F pressed to the inside is uniformly generated over the whole periphery when the inner diameter is expanded. Thereby, the spiral spring 5 externally inserted around the coil spring 4 presses the coil spring 4 with the tensed binding force uniformly applied along the outer periphery of the coil spring 4. A large part of the coil part covering the movable core bar 3 of the coil spring 4 and a slight part of the coil part covering the fixed core bar 2 are coverted with the spiral spring 5. Thereby, clock force free from play can be obtained at the time of continuously operating from a reverse point to forward rotation.
JP30177889A 1989-11-20 1989-11-20 Rotary lock device Pending JPH03161814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30177889A JPH03161814A (en) 1989-11-20 1989-11-20 Rotary lock device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30177889A JPH03161814A (en) 1989-11-20 1989-11-20 Rotary lock device

Publications (1)

Publication Number Publication Date
JPH03161814A true JPH03161814A (en) 1991-07-11

Family

ID=17901060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30177889A Pending JPH03161814A (en) 1989-11-20 1989-11-20 Rotary lock device

Country Status (1)

Country Link
JP (1) JPH03161814A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0540071U (en) * 1991-11-01 1993-05-28 黒石鉄工株式会社 Foot-operated parking brake
JPH0632241U (en) * 1992-09-29 1994-04-26 黒石鉄工株式会社 Foot-operated parking brake
US5335563A (en) * 1991-10-29 1994-08-09 Kuroishi Iron Works Co., Ltd. Foot-operated parking brakes for cars and one-way dampers for use therein
US5400883A (en) * 1991-07-23 1995-03-28 Nhk Spring Co., Ltd. Rotation locking device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5400883A (en) * 1991-07-23 1995-03-28 Nhk Spring Co., Ltd. Rotation locking device
US5335563A (en) * 1991-10-29 1994-08-09 Kuroishi Iron Works Co., Ltd. Foot-operated parking brakes for cars and one-way dampers for use therein
JPH0540071U (en) * 1991-11-01 1993-05-28 黒石鉄工株式会社 Foot-operated parking brake
JPH0632241U (en) * 1992-09-29 1994-04-26 黒石鉄工株式会社 Foot-operated parking brake

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