PL66278Y1 - Adjustable hinged knee - Google Patents

Description

2 PL 66 278 Υ1

Pattern description

The subject of the utility model is an adjustable bend with a hinge, used especially in installations for distributing hot air from a fireplace and in ventilation installations.

The structure of the knee is known, made of a sheet metal channel with a rectangular or circular cross section. The longitudinal axis of the rectangular or circular knee channel is broken in two places. The first break is 45 [deg.] And the second break is 45 [deg.] Making a total angle between the longitudinal axis of the inlet and the outlet of 90 [deg.]. The inlet of the elbow is part of the elbow from the inlet to the angle of the channel axis. The outlet port is part of the duct from the outlet to the kink. Between the bends there is an intermediate stub pipe. The versions of this bend differ in the number of intermediate connectors and the angle of the longitudinal axis between the individual connectors of the knee. The angle between the longitudinal axis of the inlet and outlet connections results from the design of the elbow and remains unchanged.

A one-piece elbow is known which is made by plastic injection molding. The inlet stub is connected to the outlet stub by a torus-shaped channel. Plastic elbows are usually used in sanitary installations. The most popular sizes are 90 °, 45 ° and 30 °. The angle between the inlet axis and the outlet axis cannot be changed.

An adjustable knee is known, consisting of segments having outwardly folded edges forming flanges. The segments are made in the shape of a round tube. The inlet and outlet port segments are angled at one end. The intermediate segments are cut at an angle at both ends. The segments fit together with flanges. The band has two flanges fitted tight against each other - one for each segment. The tie is tightened with screw locks or articulated latches. Changing the angle between the segments is accomplished by rotating two adjacent segments relative to each other.

The purpose of a utility model object having channel-shaped rectangular sections is to be able to change the angle between the inner segment constituting the inlet to the knee and the outer segment constituting the outlet from the knee.

The essence of the utility model is to connect the inner and outer segments with a hinge. The inner segment has at the end an arcuate shaped portion located inside the arcuate shape of the outer segment.

Connecting the inner segment to the outer segment by means of a hinge allows the angle between the inner segment and the outer segment to be changed. The shaped portions curved in the inner segment and outer segment allow the inner segment in the outer segment to rotate about the hinge axis.

The item according to the utility model is shown in the drawings:

Fig. 1 - oblique view of the knee

Fig. 2 is a plan view with a cutaway showing the insertion of the inner section into the outer section.

Fig. 3 is a detail view, sectional view of the hinge, from above.

The utility model object consists of an inner section (2) connected by a hinge (3) to the outer section (1). The inner segment (2) consists of a sheet metal frame (5) with a rectangular cross-section, to which from the inside is attached a sheet-metal channel (6) having a short section with a rectangular section and a section bent in an arc. A hinge element (3) is provided on the inside of the arc fold. The outer segment (1) is made of sheet metal in the shape of a section of a duct with a rectangular cross-section, bent at the end in an arc. A hinge element (3) is provided on the inside of the arc fold. The elements of the hinge (3) are connected with each other by a pin (4) constituting the hinge (3). The arc fold of the inner segment (2) is placed in the arc fold of the outer segment (1) with a slight play between the walls of the segments.

The outer segment (2) and the inner segment (1) are used to connect to installation ducts placed at an angle to each other, the axes of which cross. The connection of the inner segment (2) with the outer segment (1) by means of the hinge (3) enables the rotation of the inner segment (2) in relation to the outer segment (1) around the axis (6) of the hinge (3), allowing the knee angle to be adjusted to the angle of the channels to be connected. A slight play in the curved part between the walls of the inner segment (2) and the outer segment (1) allows movement

Claims (1)

3 PL 66 278 Υ1 nozzles to each other and ensures tightness of the connection. Increasing the tightness requires the use of sealing in the form of paste or tape, applied after the installation of the adjustable bend. The adjustable elbow according to the utility model facilitates the construction of installations in building conditions, where it is often necessary to use an elbow with an angle different from the typical set for the available fixed elbows. Protective claim An adjustable elbow consisting of segments connected in movement with each other, characterized in that the inner segment (2) is made in the shape of a straight section of a channel with a rectangular cross-section, especially of sheet metal, is bent at the end in an arc shape and the outer segment (1) is made of in the shape of a straight section of a channel with a rectangular cross-section, especially made of sheet metal, is bent at the end in the shape of an arc and the arched bend of the inner segment (2) is placed in the arched bend of the outer segment (1), and the inner segment (2) is connected to the outer segment (1) with the hinge (3).