SU821786A1 - Fixing arrangement - Google Patents

Description

one

. The invention relates to machine building and is intended for the elastic and rigid fixation of a part moving relative to another part.

A retainer is known, comprising a housing within which a hollow slider with a lid is placed and a spring which presses the slider. Between the collar of the stem, placed in the cavity of the ram, and the lid, another spring is placed, and the collar limits the movement of the stem l.

Under the action of an axial force, the slider moves in the housing, moving the rod to the fixed element. When the stem head stops in the fixed element, the slider continues to move downward, compressing the stem spring. As soon as the nest of the fixed element comes under the rod, the latter drops into it. When the axial force is removed, the slider under the action of its spring moves upwards and removes the rod head from the seat of the fixed element.

However, this device has a number of disadvantages: the need to apply a constant pressure 1 from the additional control unit 1 or manually to hold the shield

in a fixed position, and hence the unreliability of fixation, the complexity of the design, the impossibility of elastic fixation, i.e. fixing in various positions with transfer to other positions when the fixed part itself overcomes a certain force that holds it in the fixed position (as opposed to rigid fixation, when for transfer in another position it is necessary to apply or relieve force to the plunger for removal from the nest (or introduction

5 into it).

The purpose of the invention is to improve the performance of the lock.

This is achieved by the fact that the proposed retainer is provided with a support washer placed in the central opening of the housing between the stem and the spring, and in the housing crossing the central opening is made

5 a groove in which a plate with a hole is placed so that it can interact with the rod and the support washer, and the surfaces of the stem and the bearing 0 of the washer contacting the plate are spherical.

The housing cover is mounted with the possibility of moving it in the central opening of the housing with fixation in various positions.

Figure 1 shows the proposed latch, Srazrez; figure 2 - section aa in figure 1.

The latch has a housing 1 with a central hole 2, in which the spring 3, the support washer 4 with the working surface 5, the nut 6. /, the lock nut 7, the flap 8 with the working surfaces 9 and 10, the cover 11 are located. In the case 1 there are shaped grooves 12, as well as a groove that intersects the opening 2 and in which the cutter 13 is located, consisting of a strip with a hole 14. The cover 11 is held in the opening 2 by means of fingers 15, which is pressed by spring 16.

In the open (elastic 7 position, the axis of the hole 14 of the cutter 13 coincides with the axis of the hole 2. The spring 2 exerts pressure through the bearing washer 4 on the shield 8, which with its working surface 10 abuts against the seat of the fixed part.

In order to release and transfer one part relative to another to the next fixed position, it is necessary to apply to any of the parts a certain force required to remove the rod 8 from the socket. The rod 8, overcoming the force of the spring 3, moves in the hole 2 and is withdrawn from the socket. The cutter 13 does not interfere with this, since the diameter of the hole 14 is not less than the diameter of the rod 8. The part moves and is fixed in a different position. i

To regulate the force of pressing the rod 8 to the nest, and thus the effort required for packaging and transferring the part to another fixed position, serves as a cover 11 that is moved in the hole 2 and fixed in different positions in the figured grooves 12 using spring-loaded step fingers 15.

 For rigid fixation, the cutter 13 is moved to the closed position shown in Fig. 1. In this case, the rod 8 is rigidly clamped on two sides: on the one hand a nest, on the other a cutter plate. Thus, the parts are securely fixed. Rasfixation and transfer of any of the items to another fixed position is possible only after transferring the trimmer 13 to the open position.

After transfer to another fix-. my position can either be left. the latch in the elastic (open) position, or, if necessary, translate with the help of the selector 13 into the rigid (closed) position.

Claims (2)

1. A clamp comprising a housing with a lid and a spring-loaded rod placed in its central hole, characterized in that, in order to improve performance, it is provided with a backing washer placed in the central hole of the housing between the rod and the spring, and in the housing there is a slot which intersects the central opening, in which a plate with an opening is placed with the possibility of interaction with the rod and the supporting washer, and the surfaces of the rod and the supporting washer in contact with the plate are spherical. 2. The latching device according to claim 1, in which, in order to control the fixing force, the housing cover is installed with the possibility of moving it in the central opening of the housing and fixing it in different positions. Sources of information taken into account when examining 1. USSR author's certificate No. 558111, cl. F 16 B 21/06, 1977 (prototype). 15 A-A