SU1545254A1 - Differential braking device - Google Patents

Abstract

The invention allows smoothly, without damages and the formation of "loops", to brake the magnetic tape during fast-forward rewinds, to simplify the design and to increase the reliability of the thermal device of the tape-carrying mechanism (LPM). The device comprises a base 1, a brake element of side nodes 6 and 7 of the LM, made in the form of an equal-lever lever 3 having friction elements 4 and 5 at the ends. The brake element is connected by a hinge assembly 8 with a spring 9 and a bar 11, the end of which has the ability to move base elements. The guide elements, the hinge unit and the point of attachment of the spring end are on the same axis of symmetry of the braking device and side nodes. 2 Il.

Description

3

The invention relates to the Magnetic Recording Technique, namely to the means of stopping the tape mechanism.

The purpose of the invention is to increase reliability by reducing wear on the rubbing surfaces and reducing energy consumption during braking.

Figure 1 shows the device in the off position; in FIG. 2, the same in the working position (in the stop mode).

The device comprises a base 1 with stops 2, a brake element 3 in the form of a lever with friction elements 4 and 5, side nodes 6 and 7 of the tape-forming mechanism, an articulated node 8, a spring 9, one end connected to the brake element 3, and the other end with a base 1 at point 10, the bar 11, the second end 12 of which runs in the guides 13 of the base and on which it is possible to act the driving device 14 of the strap conveyor mechanism,

The device works as follows.

For braking the side

when the tape mechanism is transferred to the Stop mode, for example, from the tape rewinding mode in direction A, the drive unit 14 releases the bar 11, while the brake element 3 moves under the influence of the spring 9 and its friction elements 4 and 5 touch with the drums of the side assemblies 6 and 7, as a result of the frictional interaction, the braking element 3 moves to the side of the feeding side assembly 7, in the same direction of

five

five

0

2, which achieves without excessive jerk the hinge unit 8 with, the point of application of the braking force, while the braking force of the feeding unit 7 is so much greater than the braking force of the receiving unit 6, during which the shoulder 1 is greater than the arm 1. smooth,

braking and tensioning of the magnetic tape in the process of braking the side nodes. Due to the differential redistribution of braking forces, less wear is achieved on the friction surfaces of the device, as well as on the side assemblies, as a result of the braking of the latter by rolling friction.

Similarly, lateral nodes are braked when the tape mechanism is transferred to the Stop mode from the tape rewind mode in the direction B.

Claims (1)

Invention Formula Differential braking device containing a base, two drums of side nodes with a brake element, on which are fixed by one the end is a torsion spring and an actuator bar mounted to reciprocating movement between the side nodes along the axis of symmetry of the device, characterized in that, in order to increase reliability by reducing wear of the rubbing surfaces and reducing energy consumption during braking, the braking element is designed as a lever with friction linings at the ends, and the second The horses of the torsion spring are fixed on the base along the axis of symmetry, with the torsion spring and the actuating strap fastened pivotally in the center of the lever. Editor L.Gratillo Compiled by B.Sychev Tehred L.Oliynyk Order 493 Tirah 482 VNIIPI of the State Committee for Inventions and Discoveries at the Nuclear Specialized Nuclear System of the USSR 113035, Moscow, Zh-35, Raushsk office, 4/5 FIG. I Proofreader S. Shekmar Subscription