GB2125868A

GB2125868A - Closure element

Info

Publication number: GB2125868A
Application number: GB08317727A
Authority: GB
Inventors: Herbert Lehmann
Original assignee: GRUBE VEB KRAFTFAHRZEUG
Current assignee: GRUBE VEB KRAFTFAHRZEUG
Priority date: 1982-07-05
Filing date: 1983-06-30
Publication date: 1984-03-14
Also published as: PL143239B1; HU187873B; CS248298B1; CS434583A1; IT1168202B; GB8317727D0; DD218751A3; SU1361033A1; FR2529610A1; YU129783A; DE3305016A1; IT8348517A0; FR2529610B3; PL242618A1

Abstract

A closure element comprises a frame member (6) and a panel member (1) the turned-over edges (2) of which house a sealing lip (11). <IMAGE>

Description

SPECIFICATION Closure element for providing sealed closure of an opening The present invention relates to a closure element, and has particular reference to a door, lid or hatch for commercial vehicle coachwork, wherein, for example, a frame is connected with an outer panel and a sealing element of resilient material is provided.

It is known to connect an outer surface with a -frame through spot-welding, riveting, screwing or folding and to fasten a sealing element by different means such as clamping, screwing or gluing.

All these methods have the disadvantage that at least two different and successive techniques must be used for connection of the panel to a frame and for mounting of the sealing element, namely initial connecting of the panel to the frame and subsequent fastening of the sealing element.

This entails a high assembly time and use of additional materials for the fastening of the sealing element. Moreover, the known techniques are time-consuming and therefore disadvantageous in terms of costs, because an expenditure of energy is necessary as well as the increased time and material consumption.

There is accordingly a need for a closure element that dispenses with mechanical connecting elements and welding or gluing techniques so that working time and material can be saved and manufacturing costs reduced, especially an element, such as a coachwork door, lid or hatch, in which the components can be assembled in one operating step without additional technical measures.

According to the present invention there is provided a closure element comprising a pre fabricated frame formed by a closed frame part with bent portions and limbs adjoining thereat.

The limbs respectively adjoining two mutually opposite bent portions are constructed to be nearly equally long, while one pair of mutually opposite limbs has a length difference from the other pair. An outer panel member over its entire periphery has a hollow turn-over which at each of two mutually opposite sides in the region of two likewise mutually opposite ends displays a respective pull-up of the ends, which corresponds at least to the thickness of the material of the limbs of the frame. In that case, that side of the limbs which is shorter by one difference engages behind the hollow turn-overs provided without pull-up.The length of the ends of the hollow turn over is so constructed that a minimum spacing arises each time between the end and the bent portion so that a resilient profile member, which reaches over the entire periphery of the hollow turn-over, is arranged between the limbs and the ends in this arrangement of frame and panel member and a sealing lip thereof is directed beyond the end to be pointing away from the frame part. The hollow turn-over at the panel member preferably amounts to about 1800 and the angle between bent portion and limb preferably amounts to about 900. The spacing between the end of the hollow turn-over and the limbs of the frame is smaller than the material thickness of the profile member.

An embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying drawings, in which: Fig, 1 is a schematic sectional view of a panel member of a closure element embodying the invention; Fig. 2 is a schematic sectional view of a frame member of a closure element embodying the invention; and Fig-. 3 is a schematic sectional view of the complete closure element.

Referring now to the drawings, there is shown in Fig. 1 a panel member 1 provided around its entire periphery with a hollow turn-over 2. The hollow turn-over 2 in the illustrated embodiment amounts to 1800. Provided at each of two mutually opposite sides in the region of two mutually opposite ends 3 of the turn-over 2 is a respective pull-up 4 of the ends 3, which is not less than the material thickness of limbs 5 of a frame 6 (Fig. 2). The frame 6 is provided over its entire periphery with the limbs 5 at bent-over wall portions 7, which merge into a frame part 8. The limbs adjoining each two opposite wall portions 7 are constructed to be equally long, while one pair of opposite limbs 5 has a length difference relative to the other pair. The limbs 5 which are shorter engage behind the portions of the turnover 2 without the pull-up 4 (Fig. 3).The length of the ends 3 of the turn-over 2 is such that a minimum spacing 9 arises between each end 3 and the adjacent wall portion 7, the frame 6 being centred to the panel member 1. In this position of the frame 6 and member 1, a resilient profile member 10 extending around the entire periphery of the turn-over 2 is arranged between the limbs 5 and the ends 3, the spacing between the ends 3 and the limbs 5 being smaller than the material thickness of the member 10 in this region. The member 10 has a sealing lip 11 directed beyond the end 3 and pointing away from the frame part 8. The member 10 also serves as a sealing element between the just described door and, for example, associated vehicle coachwork.

Claims

1. A closure element comprising a quadrilateral frame member having a closed frame portion which is provided around its periphery with a wall portion terminating in an outwardly projecting flange, the respective flange portions at each pair of opposite sides of the frame member being arranged to project by substantially the same amount and the amount of such projection of the flange portions at one such pair of sides being less than that at the other pair of sides, a quadrilateral panel member provided around its periphery with a return portion defining channel

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Closure element for providing sealed closure of an opening The present invention relates to a closure element, and has particular reference to a door, lid or hatch for commercial vehicle coachwork, wherein, for example, a frame is connected with an outer panel and a sealing element of resilient material is provided. It is known to connect an outer surface with a -frame through spot-welding, riveting, screwing or folding and to fasten a sealing element by different means such as clamping, screwing or gluing. All these methods have the disadvantage that at least two different and successive techniques must be used for connection of the panel to a frame and for mounting of the sealing element, namely initial connecting of the panel to the frame and subsequent fastening of the sealing element. This entails a high assembly time and use of additional materials for the fastening of the sealing element. Moreover, the known techniques are time-consuming and therefore disadvantageous in terms of costs, because an expenditure of energy is necessary as well as the increased time and material consumption. There is accordingly a need for a closure element that dispenses with mechanical connecting elements and welding or gluing techniques so that working time and material can be saved and manufacturing costs reduced, especially an element, such as a coachwork door, lid or hatch, in which the components can be assembled in one operating step without additional technical measures. According to the present invention there is provided a closure element comprising a pre fabricated frame formed by a closed frame part with bent portions and limbs adjoining thereat. The limbs respectively adjoining two mutually opposite bent portions are constructed to be nearly equally long, while one pair of mutually opposite limbs has a length difference from the other pair. An outer panel member over its entire periphery has a hollow turn-over which at each of two mutually opposite sides in the region of two likewise mutually opposite ends displays a respective pull-up of the ends, which corresponds at least to the thickness of the material of the limbs of the frame. In that case, that side of the limbs which is shorter by one difference engages behind the hollow turn-overs provided without pull-up.The length of the ends of the hollow turn over is so constructed that a minimum spacing arises each time between the end and the bent portion so that a resilient profile member, which reaches over the entire periphery of the hollow turn-over, is arranged between the limbs and the ends in this arrangement of frame and panel member and a sealing lip thereof is directed beyond the end to be pointing away from the frame part. The hollow turn-over at the panel member preferably amounts to about 1800 and the angle between bent portion and limb preferably amounts to about 900. The spacing between the end of the hollow turn-over and the limbs of the frame is smaller than the material thickness of the profile member. An embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying drawings, in which: Fig, 1 is a schematic sectional view of a panel member of a closure element embodying the invention; Fig. 2 is a schematic sectional view of a frame member of a closure element embodying the invention; and Fig-. 3 is a schematic sectional view of the complete closure element. Referring now to the drawings, there is shown in Fig. 1 a panel member 1 provided around its entire periphery with a hollow turn-over 2. The hollow turn-over 2 in the illustrated embodiment amounts to 1800. Provided at each of two mutually opposite sides in the region of two mutually opposite ends 3 of the turn-over 2 is a respective pull-up 4 of the ends 3, which is not less than the material thickness of limbs 5 of a frame 6 (Fig. 2). The frame 6 is provided over its entire periphery with the limbs 5 at bent-over wall portions 7, which merge into a frame part 8. The limbs adjoining each two opposite wall portions 7 are constructed to be equally long, while one pair of opposite limbs 5 has a length difference relative to the other pair. The limbs 5 which are shorter engage behind the portions of the turnover 2 without the pull-up 4 (Fig. 3).The length of the ends 3 of the turn-over 2 is such that a minimum spacing 9 arises between each end 3 and the adjacent wall portion 7, the frame 6 being centred to the panel member 1. In this position of the frame 6 and member 1, a resilient profile member 10 extending around the entire periphery of the turn-over 2 is arranged between the limbs 5 and the ends 3, the spacing between the ends 3 and the limbs 5 being smaller than the material thickness of the member 10 in this region. The member 10 has a sealing lip 11 directed beyond the end 3 and pointing away from the frame part 8. The member 10 also serves as a sealing element between the just described door and, for example, associated vehicle coachwork. Claims

1. A closure element comprising a quadrilateral frame member having a closed frame portion which is provided around its periphery with a wall portion terminating in an outwardly projecting flange, the respective flange portions at each pair of opposite sides of the frame member being arranged to project by substantially the same amount and the amount of such projection of the flange portions at one such pair of sides being less than that at the other pair of sides, a quadrilateral panel member provided around its periphery with a return portion defining channel receiving the flange of the frame member with a spacing between the return portion and the wall portion, the return portion at each of two opposite sides of the panel member being outwardly turned by an amount at least equal to the thickness of the flange and the flange portions at said one pair of sides of the frame member being engaged behind the parts of the return portion at the other two sides of the panel member, and a resilient element which is arranged around the frame member to extend between the wall portion and the return portion and which is provided with a sealing lip extending outwardly from the frame member.

2. A closure element as claimed in claim 1, wherein the return portion is provided by a portion turned, through substantially 180 with respect to the rest of the panel member.

3. A closure element as claimed in either claim 1 or claim 2, wherein the wall portion extends at substantially 90Q relative to the frame portion.

4. A closure element as claimed in any one of the preceding claims, wherein the resilient element comprises a compressed portion extending between the wall portion and the return portion, said spacing between the wall portion and the return portion being smaller than the thickness of said portion of the resilient element in the uncompressed state.

5. A closure element substantially as hereinbefore described with reference to the accompanying drawings.