SU1620100A2 - Fixation mechanism of turning lid - Google Patents

Abstract

The invention relates to thermal equipment of catering and galley equipment, specifically to the mechanisms for fixing the rotary covers of thermal devices. The purpose of the invention is to increase reliability, convenience and safety during operation under vibration conditions. The mechanism contains a drive disk 10 with protrusions located around the circumference at the same distance from the center of the disk, and disk 8 with depressions located on this disk with the possibility of sequential entry of protrusions into them. 4 il.

Description

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The invention relates to the thermal equipment of catering and galley equipment, namely to the mechanisms for fixing the rotary covers of thermal devices, and is an improvement of the known device according to the author. Ev, No. 535081.

The purpose of the invention is to increase reliability, convenience and safety during operation under vibration conditions.

FIG. 1 shows schematically the proposed fixing mechanism for a swivel cover, a slit (position with an additional discrete fixation — the protrusions and depressions coincide); in fig. 2 - the mutual position of the master and slave profiled discs in the absence of additional discrete fixation — the projections and depressions do not coincide; in fig. 3 — axis with drive disk and protrusions sitting on it, cross section; in fig. 4 - cover positions with additional discrete fixation.

The rotary cover locking mechanism (Fig. 1) contains a rotating semi-axle 1, which with a scarf 2 is rigidly connected to the cover 3. A lever 4 is fixed on the axis, with which the mass of the cover 3 is partially balanced by means of a spring 5. On the square of the semi-axis 1 a brake device is mounted including a driving disk 6, turning together with the axis 1, a driven disk 7, fitted loosely, a driven disk 8 with hollows 9, mounted loosely. A support plate is connected to the body of the thermal device with a groove for engaging with the driven disks 7 and 8. A driving disk 10 with protrusions 11 adjoins the driven disk 8, the profile planes of the disks 8 and 10 complement each other. To increase the contact between the brake discs 6, 7 and 10, friction pads are fitted. The required frictional braking torque is created by the mutual pressing of the disks 6, 7, 10 by means of a spring 12: the pressing force is adjusted by the nut 13 through the washer 14. The spring 12 also provides the necessary discrete fixation when the protrusions 11 of the drive disk 10 enter the cavity 9 of the driven disk 8. Hemix 1 rotates together with the cover 3 in the sleeve 15. The drive disks 6 and 10 rotate together with the semi-axis and have the possibility of movement along the semi-axis. The driven discs 7 and 8 interact with the groove of the anvil plate that protects them from rotation, and also have the ability to move along the semi-axis.

The protrusions 11 on the disk 10 are located circumferentially at the same distance from the center of the disk, and on the side adjacent to the other disk 8 there are depressions 9 arranged with the possibility of successive occurrence of protrusions 11 in them.

The device works as follows.

When the lid 3 is closed, the protrusions 11 of the drive disk 10 enter into the valleys 9 of the driven disk 8. Thus, discrete fixation is achieved by friction braking of the cover 3 using disks 6, 7, 10

by means of disks 10 and 8. When opening the cover, semi-axis 1 rotates together with disk 10, and disk 8 does not rotate, since it is fixed by an anvil plate. The protrusions 11 of the disk 10 out of the depressions 9

the disk 8, since the disk 10 moves along the half-axis 1, pressing the spring 12. In this case, a small additional force is overcome to release the projections 11 of the drive disk 10 from the cavities 9 of the slave disk 8,

which is sufficient for additional fixation of the cover under the conditions of vibration. Upon further opening of the cover after the protrusions 11 of the drive disk 10 from the depressions (Fig. 2) of the slave disk.

8, friction braking of the cover is carried out with the help of disks 6, 7, 10 until the protrusions 11 of the drive disk 10 fall into the next cavities of the driven disk 8 and as a result of the spring action

12, a pair of discs 10 and 8 do not snap into place and there is no additional discrete locking in positions II and III of the lid (as shown in FIG. 4), in which the lid also has an additional

fixing in a particular position and from which it is not displaced by vibration.

The proposed mechanism is reliable in terms of vibration, easy to use and safe.

FORUMAILA and OSTRECHE and the mechanism for fixing the rotary cover on the author. St. No. 535081, from l ia y and with the fact that, in order to increase reliability, convenience and safety during operation in conditions of vibration, protrusions and depressions are made on the sides of disks facing one another to sequentially place protrusions in them when turning disk, with the protrusions and depressions located at the same distance from the center of the disks.

Claims (1)

Claim The mechanism for fixing the rotary cover according to ed. St. Ns 535081, characterized in that, in order to increase the reliability, convenience and safety during operation in vibration conditions, protrusions and depressions are made on the sides of the disks facing one another for successive placement of protrusions in them when the disk is rotated, while the protrusions and depressions are located on equal distance from the center of the discs. ff ^{9 ί1} Λ / ^ζ ϊήή 'Λ * ί t FIG. 3