SK462010U1 - Lifting mechanism especially of the dental seat - Google Patents

Abstract

Lifting mechanism especially of the dental seat consists of a supporting pillar (1) equipped by vertical cursor (2) which body is equipped by guide rollers (3) and lifting arm (5). Vertical cursor (2) together with the guide rollers (3) are placed into hollow supporting pillar (1) and the lifting arm (3) is fastened to the body of vertical cursor (2) in the extended diagonal (6) of the square cross-section the pillar (1).

Description

The lifting mechanism of the dental chair, in particular, is part of the dental set for dental therapy. It consists of a supporting column with a vertical runner, the body of which is equipped with guide rollers and the lifting arm of the dental chair.

BACKGROUND OF THE INVENTION

According to the prior art, the vertical slider is usually arranged from the outside of the support column, which may have, for example, an "I", "U" profile and the like. The rolling bearing of the vertical runner on the supporting column is relatively demanding in terms of manufacturing accuracy. The lifting arm of the dental chair is usually mounted on the front vertical surface of the vertical runner.

The essence of the technical solution

The high precision of manufacturing accuracy is to some extent eliminated by the lifting mechanism according to the utility model, which is based on the fact that the vertical runner together with the guide rollers is arranged inside the hollow square support column and the lifting arm of the chair is fixed to the vertical runner elongated diagonal cross section of the supporting column.

A further feature of the lifting mechanism according to the utility model, in connection with the previous one, is that the upper pair of guide rollers is supported on a pair of front vertical support surfaces situated within the support column, while the lower pair of guide rollers is supported on a pair of rear vertical support surfaces. supporting column. Since the chair lift arm forms a rigid unit with the vertical runner movably mounted inside the support column, this arm is led out into the outer space through a vertical slot formed in one of the four edges of the support column.

An advantage of the utility model lifting mechanism is that, despite the reduced manufacturing requirements, namely in terms of the accuracy of the vertical slider on the support column of the device, the device remains fully in terms of its desired performance.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of the lifting mechanism with the vertical runner extended and the lifting arm over the support column; FIG. 2 shows a similar perspective view of the same lifting mechanism in working condition.

Example

The lifting mechanism according to the utility model consists of a support column 1 of a rectangular hollow shape. In its interior there is a movably mounted vertical runner 2, provided with four guide rollers 3, for example bearings, slid on the hubs 4. These are a fixed part of the vertical runner body 2, as well as the lifting arm 5 of the dental chair not drawn. The lifting arm 5 is connected to the vertical slider body 2 in the direction of the diagonal 6 of the cross-section of the support column 1.

The guide rollers 3 are arranged in pairs on the vertical runner 2 in such a way that the upper pair of these guide rollers 3, in the collapsed, standby condition of the lifting mechanism, rest against the pair of front vertical support surfaces 7 inside the support column 1 while the lower pair of guide rollers. 3 is supported by a pair of rear vertical support surfaces 8 inside the support column 1. The front vertical support surfaces 7 are those on the adjacent side to the vertical slot 9, the rear ones on the opposite side. Through this vertical slot 9 formed on the leading edge 10 of the support column 1, the support arm 5 of the dental chair extends therefrom.

The lifting mechanism operates in such a way that lifting of the support arm 5 is provided by a standard drive unit equipped with a vertical screw as well as a nut anchored to the support arm 5 with the possibility of a certain swing thereof.

Industrial usability

The lifting mechanism according to the utility model can be advantageously used in the production of medical, especially dental equipment, because it meets the demanding requirements of modern dental therapy.

Claims (3)

PROTECTION REQUIREMENTS A lifting mechanism, in particular a dental chair, comprising a support column provided with a vertical runner, the body of which is equipped with guide rollers and a lifting arm of a dental chair, characterized in that the vertical runner (2) together with the guide rollers (3) is arranged inside a hollow square the support column (1) and the lifting arm (5) are fixed to the vertical runner body (2) as if in the elongated diagonal (6) of the square cross section of the support column (1). Lifting mechanism according to claim 1, characterized in that the upper pair of guide rollers (3) is supported on a pair of front vertical support surfaces (7) inside the support column (1), while the lower pair of guide rollers (3) is supported o a pair of rear vertical support surfaces (8) inside the support column (1). Lifting mechanism according to claim 1, characterized in that the lifting arm (5) is led out of the support column (1) via a vertical slot (9) in one of the edges (10) of the support column (1).