192 clutches and power-stop control – Clutch and brake – Vehicle type
Patent
1988-01-27
1989-02-28
Bruan, Leslie A.
192 clutches and power-stop control
Clutch and brake
Vehicle type
192 18R, 192107C, B60K 4124, F16D 6702
Patent
active
048077305
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
This invention relates to a clutch brake, and especially to one having a brake assembly connectable to a rotatable shaft with driving action accomplished and a cover assembly providing an external friction surface, supported rotatably relatively to said brake assembly and utilized particularly for an asynchronous heavy duty transmission.
2. Background Art
With regard to this kind of clutch brake, the applicant of the present invention has already developed a prior art as illustrated by FIG. 4 and applied it for a patent (Application No.: S61-46786, Date of application: Mar. 4, 1986).
In this prior, a coned disc spring 100 is interposed between a cover assembly C and a brake assembly B so as to improve a torque characteristic produced by the brake assembly B. However, covers 102 and 104 of the cover assembly C are fastened by a hook 106 so that an engagement feeling of the clutch brake is not always good when the cover assembly C is pressed by both pressure surfaces 108 and 108.
Further, said engagement action is done abruptly so that facings 110 will be worn out quickly to a large extent.
DISCLOSURE OF THE INVENTION
An object of the invention is to provide a clutch brake which can make an engagement feeling more smooth and reduce a wear amount of a friction member.
This invention relates to a clutch brake having a brake assembly connectable to a rotatable shaft with driving action accompanied and a cover assembly providing external friction surfaces and supported rotatably relatively to said brake assembly; characterized by that rivets are provided which slidingly connect approximately disc-like facing-each-other two cover elements composing said cover assembly with a specified axial clearance left therebetween, an approximately disc-like spring member for pressing the brake assembly is interposed between the cover assembly and the brake assembly, said clearance between the cover elements being so set that a spring force of the spring member is not transmitted to the brake assembly in an initial state where the cover assembly is not pressed and the spring force of the spring member is transmitted to the brake assembly in an engaged state where the cover assembly is pressed.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a sectional view showing an embodiment of the invention taken on a line I--I of FIG. 2.
FIG. 2 is a partially fragmental front view.
FIG. 3 is a graph showing a torque characteristic in relation to an allowance for wear of friction member.
FIG. 4 is a partially fragmental schematic side view showing a conventional embodiment.
FIG. 5 is a schematic vertical sectional view showing a so-called pull-type clutch employing the clutch brake according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
In FIG. 1 showing the clutch brake according to the present invention, 10 is an approximately annular hub. The hub 10 fits onto an input shaft 3 (only a central line being illustrated) and always rotates together with the input shaft 3. A through hole 15 is formed on an inner peripheral part of the hub 10. The through hole 15 is provided in order to have the input shaft 10 pass through it. Two projections 11, facing one another for example, are formed at specified places of the through hole 15. These projections 11 mesh with the input shaft 3 side so that the hub 10 rotates integrally with the input shaft 3. Projections 12 are formed at four 90-degrees equally spaced places, for example, on an outer peripheral surface of the hub 10. The projections 12 engage with an annular friction member 13, which is positioned at an outer peripheral side of the hub 10. The projection 12 meshes with a recessed part 14 with a specified play .beta.(FIG. 2) left therebetween. The recessed parts 14 are formed on an inner peripheral surface of the friction member 13. Further, a stepped part 16 is formed on a right side face of the hub 10 in FIG. 1. An inner peripheral surface of a friction plate 17, which will be mentioned later, contacts with the stepped part 16. The bra
REFERENCES:
patent: 3763977 (1973-10-01), Sink
patent: 4186826 (1980-02-01), Mackendrick et al.
patent: 4657124 (1987-04-01), Flotow
patent: 4762215 (1988-08-01), Flotow et al.
Asada Masaaki
Fukatani Yasunobu
Kitano Seiichi
Bruan Leslie A.
Kabushiki Kaisha Daikin Seisakusho
Pitts Andrea
LandOfFree
Clutch brake does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clutch brake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clutch brake will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1359351