SU1229465A1 - Arrangement for fixing relative position of parts - Google Patents

Description

The invention relates to general engineering and can be used to fasten an iron construction device.

The purpose of the invention is to increase the reliability of fixation in terms of vibration effects.

The pa of FIG. 1 depicts the proposed device in a disconnected state; Figure 2 is the same in the docked state; on fig.Z - section aa in figure 2.

The device comprises a rod 1 with a head-safety device 2 and with wedge edges 3, mounted on one of the matched parts 4, wedge-shaped spreader crumbs 5 with stops 6, supporting wedge-shaped crumbs 7 with stops 8 and 9, and chamfering 10, glass 11, two springs 12 and 13. Another articulated part has a hole 14 with a lead-in chamfer 15.

The device works in the best way possible.

In the initial state (outside of the hole 14), the spring 13 pulls the crackers 5 on the face 3 of the stem 1, and the spring 12 pulls the crackers 7 on the crackers 5. In this case, the supporting crackers 7 move apart up to the stop 1 1 and the distance from the axis of the stem 1 to the outer surface of the crackers 7 exceeds the maximum, taking into account the tolerance, the radius of the hole 14 (or its size, in the case of a non-circular hole). The force of the extrusion of the support crumbs 7 from the device is determined by the slopes of the clip surfaces, which increase the forces developed by the springs by the appropriate number of times. The necessary force of pressing the crackers 7 against the walls of the hole 14 is determined on the basis of the mass of the object to be fixed and the parameters of external effects.

When the device is pushed into the hole 14, it enters it freely until the lead-in chamfers of the supporting crackers 7 are pressed into the lead-in chamfer 15 bore- and 14. Since the force required for pressing

five

50

0

of the support crumbs 6 into the device repeatedly exceeds the force of the spring 12, with further advancement of the pin 1 into the hole 14, the crackers 5 begin to slip out from under the crackers 7 (reverse wedge), compressing the spring 12, but at the same time move the wedge surfaces 3 of the rod 1 under the action of the spring 13, to compensate for the emerging gaps. After stopping the wedge surfaces 3 into the limiting stops 6 of the rusks 5, the latter can no longer, with further advancement of the stem IB hole 14, compensate for the gaps and slip out from under the supporting crackers 7, allowing them to press under the action of lead-in chamfers K) and 15 into the device until their position allows them to enter the hole 14. Under the external mechanical effects (vibration, etc.), the assembly is self-consolidated by springs 12 and 13.

When the stem 1 is pulled out of the hole, the support crackers 7 due to the friction forces of the wall of the hole remain in place and the wedge surfaces 3 of the tongue 1 slide out from under the crackers 5, which, together with the crackers 7, under the action of the springs 12 and 13 compensate for the gaps to those then until the crackers 5 are pressed into the stops 9 of the crackers 7. Then the pressing force of the crackers 7 against the walls of the hole 14 drops abruptly and the device is removed from the hole 14.

The pa fig. 3 shows how, in the lying area of the crackers 5 and 7, the space with the stem 1 and the walls of the hole 14 is not inelastic in the material of the crackers, which eliminates the appearance of the resonant frequency of the device.

The advantage of the proposed design is that it does not have a resonant frequency and ensures reliable fixation of parts under any external mechanical actions. Aa

14

about

those.

right between fill- 5 and 7,

, 777 // W 7 W W 7 /// 97 /

SAP

J

Sh

1g.21 "-

BUT

Fig.Z

Compiled by V. Chel ez

Editors. DankulichTekhred I. VeresKorrektor O. Lugova

Order 2220/34 Draw 777 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

DEVICE FOR FIXING MUTUAL POSITION OF PARTS, comprising a housing with a spring-loaded rod with a catcher and fixing means, characterized in that, in order to increase the reliability of fixing under vibration conditions, wedge faces are made on the rod, on which the fixing means in the form of spring loaded wedge pairs, consisting of spacer and support crackers with stops, and windows are made in the housing in which support crackers are placed. n FIG. /