SU969993A1 - Device for locking adjusting screw - Google Patents

Description

(54) CONTROLLER STOPRESHNIE CONTROL

one

The invention relates to mechanical engineering and can be used in various adjusting mechanisms. ,

Devices are known in which the re-fixing screw is locked by a locking element located in the longitudinal groove of the screw. The ends of the locking element are bent into an annular groove made in the threaded bore of the housing and into a groove located at the end of the housing 1.

The disadvantages of such devices include the inconvenience of adjustment due to the fact that the adjustment screw of the adjusting screw must be made with two hands. In addition, such devices are short-lived, due to the fact that the locking element can withstand a limited number of stops.

It is also known a device comprising a housing, an adjusting screw and fixing elements. The locking elements are made in the form of a two-part screw nut screwed onto the adjusting screw. One of the parts has internal and external threads and a diameter protrusion on the end. The second part of the lock nut has only a female thread. Upper

SCREW

part of the body is made in the form of a sleeve located along the axis of the screw and having a longitudinal groove. First part

The locknuts are screwed onto the adjusting screw and, with their diametral protrusion on the end, fit into the longitudinal groove of the housing. The second part of the locknut is screwed onto the first one and interacts with the body through the spring washer 21.

The specified device is unreliable in operation, since the locking of the adjusting screw is ensured only

15 tightening the lock nut, which can weaken with shocks and vibrations. The dependence of the stopper on the tightening torque of the lock nut causes the need to control its size, which requires the use of special tools and fixtures. In addition, the device includes several threaded connections, it requires complex machining of the case, it has labor-consuming

25 in the manufacture of parts.

The purpose of the invention is to increase the ease of use

This goal is achieved by the fact that in the device containing a stationary body, the upper part of which is made in the form of a sleeve, an adjusting screw screwed into it, the shank of which is placed in the sleeve and a retainer mounted on the shank of the screw with the possibility of its contact with the sleeve of the case, the sleeve of the case eccentric relative to the axis of the adjusting screw, the retainer is made in the form of a P-shaped bracket installed with the possibility of its axial movement relative to the shank of the adjusting screw and equipped with bolts installed in the bent ends of the bracket.

Fig, 1 shows the proposed device, the cut; Figure 2 is the same, top view.

The locking device contains a bracket 1, which is worn on the square tail of the adjustment screw 2. Bolts 3 and 4 are screwed into the bent ends of the bracket in contact with the outer surface of sleeve 5, which terminates the upper part of the housing b. The longitudinal axis of the sleeve is offset from the longitudinal axis of the adjusting screw 2 by the eccentricity e.

The device works as follows.

After the adjusting screw 2 is set in the required position, the bolts 3 and 4 are tightened until they come into contact with the outer surface of the sleeve 5 of the housing 6. In this case, the bracket 1 / and therefore the adjusting screw is fixed against rotation. When turning the adjusting screw 2 in either direction, one of the bolts will run onto the surface of the eccentric located “sleeve 5, reliably the stop screw 2.

Claims (2)

1. USSR author's certificate No. 452685, cl. F 16 B 39/04, 1972.. 2. USSR author's certificate number 407102, cl. F 16 B 39/12 ,. 1971 (prototype).