Sliding part for the telescopic arm of an awning

Abstract

An awning has a rotatably mounted fabric roller, an awning fabric, a drop rod and at least one driven, multi-member telescopic arm, wherein the awning fabric is connected to the fabric roller in the region of an inner fabric edge and to the drop rod in the region of an opposite outer fabric edge. The drop rod can be adjusted by means of the telescopic arm between a retracted position, in which the awning fabric is wound onto the fabric roller, and an extended position, in which the awning fabric is stretched out. The telescopic arm has at least two arm members, wherein a first arm member is designed at least in sections as a receiving hollow profile into which a second arm member can be inserted such that it can be adjusted relative to the first arm member in the longitudinal direction of the telescopic arm. At least one sliding part is arranged between an inner wall of the first arm member and an outer wall of the second arm member, said sliding part having at least one locking finger which is formed integrally with the sliding part and which carries a locking projection which engages in a locking recess of the first arm member or the second arm member, such that the sliding part is locked to the first arm member or to the second arm member.

Description

[0001] awning

[0002] The invention relates to an awning with a rotatably mounted fabric shaft, an awning fabric, a projection rod and at least one driven, multi-section telescopic arm, wherein the awning fabric is connected to the fabric shaft in the region of an inner fabric edge and to the projection rod in the region of an opposite outer fabric edge, wherein the projection rod can be adjusted by means of the telescopic arm between a retracted position in which the awning fabric is wound onto the fabric shaft and an extended position in which the awning fabric is stretched, wherein the telescopic arm has at least two arm members, wherein a first arm member is designed at least in sections as a receiving hollow profile into which a second arm member can be inserted such that it can be adjusted relative to the first arm member in the longitudinal direction of the telescopic arm, wherein between an inner wall of the first arm member and an outer wall of the second arm memberAt least one sliding part is arranged on the arm member.

[0003] An awning of this design is known and can be designed as an open awning or as a so-called box or cassette awning, in which the roller tube is housed in a box-shaped housing. To adjust the projection rod, at least two multi-section, powered telescopic arms are typically used, which are adjustable by springs, such as gas springs, or by hydraulic or pneumatic piston-cylinder units.

[0004] When the awning is in its retracted position, with the fabric wound onto the roller tube, the drop rod is located close to the roller tube and is held in this position by the tension in the awning fabric. When the tension in the awning fabric is reduced by rotation of the roller tube, the pre-tensioned telescopic arms move the drop rod away from the roller tube, unwinding and stretching the awning fabric from the roller tube.

[0005] The telescopic arm consists of at least, and preferably at least, three arm segments that can be telescoped into one another and adjusted relative to one another. This can lead to the problem that the arm segments become jammed relative to one another during their relative movement, i.e., they assume an inclined position relative to the longitudinal axis of the telescopic arm. If the arm segments become jammed when inserted into one another, their adjustment becomes difficult or impossible.

[0006] In addition, the problem can arise that the inner inserted arm link rubs against the inner wall of the outer receiving arm link, which not only causes increased frictional forces and thus adjustment resistance, but also unpleasant noises.

[0007] It is known to insert sliding parts, particularly made of plastic or a material with a low coefficient of friction, between the inner wall of the receiving first arm member, which is at least partially formed as a hollow profile, and the outer wall of the second arm member, which is inserted into the first arm member. The sliding parts prevent, on the one hand, direct contact between the receiving first arm member and the inserted second arm member, and, on the other hand, make it difficult or even impossible for the two arm members to become jammed relative to one another.

[0008] The sliding part is usually inserted axially from the front of the receiving first arm section and then secured with retaining screws. This procedure is very complex to assemble and therefore costly.

[0009] The invention is based on the object of creating an awning of the type mentioned, in which the sliding parts can be mounted safely in a simple manner.

[0010] This object is achieved according to the invention by an awning having the features of claim 1. It is provided that the sliding part has at least one locking finger which is formed integrally with the sliding part and which carries a locking projection which engages in a locking recess of the 1st arm member or the 2nd arm member such that the sliding part is locked to the 1st arm member or to the 2nd arm member.

[0011] For assembly, the sliding part is preferably inserted from the open end into the receiving 1st arm member until a locking device preferably automatically engages with a wall of the 1st arm member and securely connects the sliding part to the 1st arm member.

[0012] Alternatively or additionally, the sliding part or another sliding part can be pushed axially onto the second arm member from its end face such that the second arm member is surrounded by the sliding part. Here, too, locking elements engage with locking recesses, which are preferably formed in the wall of the second arm member, so that the sliding part is securely held.

[0013] According to the invention, the sliding part has at least one locking finger, which carries a locking projection and engages in a locking recess of the first arm member or the second arm member. Preferably, several locking fingers are arranged distributed over the circumference of the sliding part. The locking finger(s) are integrally connected to the sliding part, for example, by forming the sliding part and the locking finger(s) as a plastic injection-molded part.

[0014] The sliding part can be designed as a sleeve or a bushing. Preferably, the sliding part has a frame section that rests against the end face of the first arm member or the second arm member. The contact of the frame section determines the desired axial position of the sliding part, which simplifies locking during assembly.

[0015] Preferably, the locking finger or fingers are formed integrally on the frame section, in particular in a freely projecting manner, and point into the interior of the respective arm member.

[0016] In a preferred embodiment of the invention, the sliding part has a sleeve-shaped insertion section that can be inserted into the first arm member and / or the second arm member. The sleeve-shaped insertion section rests against the inside of the first arm member or the second arm member over a large area and preferably over the entire inner circumference, thereby stabilizing the position of the sliding part.

[0017] In a further development of the invention, the sliding part is designed such that it can be placed on the front side of the 1st arm link or the 2nd arm link in such a way that it surrounds the 1st arm link or the 2nd arm link. Such external attachment of the sliding part particularly concerns the arm link that is inserted into the 1st arm link.

[0018] In a further development of the invention, at least two sliding parts are arranged between the outer wall of the second arm member and the inner wall of the first arm member, which sliding parts are axially spaced apart in the longitudinal direction of the telescopic arm. The use of at least two axially spaced sliding parts ensures that the degree of canting between interlocking arm members is very small or even nonexistent.

[0019] When using at least two sliding parts, it is preferably provided that one of the sliding parts is locked to the 1st arm member and the other sliding part is locked to the 2nd arm member.

[0020] In particular, it can be provided that one of the sliding parts is inserted into the 1st arm link and the other sliding part is pushed onto the outside of the 2nd arm link.

[0021] Further features and advantages of the invention will become apparent from the following description of an embodiment with reference to the drawings. In the drawings: Fig. 1 shows the basic structure of a telescopic awning in a schematic perspective view,

[0022] Fig. 2 two arm sections of a telescopic arm in an exploded view before assembly of the sliding parts and

[0023] Fig. 3 The arm sections of the telescopic arm in an exploded view after assembly of the sliding parts.

[0024] Fig. 1 shows a schematic perspective view of a telescopic arm awning 10, which has a usually horizontally aligned fabric shaft 11, which is mounted on end fabric shaft holders 12 so as to be rotatable about a longitudinal axis A. An awning fabric 15 is fastened to the fabric shaft 11 with an inner end facing the fabric shaft 11 and can be wound onto it and unwound from it. At the opposite end, the awning fabric 15 is connected to a projection rod 16 which runs parallel to the fabric shaft 11 and in particular horizontally. The projection rod 16 is held on a holding device 17 via two multi-part, driven and in particular spring-loaded telescopic arms 14. The holding device 17 is attached to a supporting structure 18, which in the illustrated embodiment is formed by a supporting tube 13, which can be firmly attached, for example, to a building or a substructure.As a result of an extension movement of the two telescopic arms 14, the projection rod 16 can be moved away from the fabric shaft 11, whereby the awning fabric 15 is unwound from the fabric shaft 11 and stretched. Accordingly, the awning fabric 15 can be wound onto the fabric shaft 11 by means of the telescopic arms 14 by retracting the projection rod 16 in the direction of the fabric shaft 11.

[0025] Fig. 2 shows two arm segments of the telescopic arm 14 in a perspective, exploded view. A first arm segment 14.1 is designed as a hollow profile and can accommodate a second arm segment 14.2. The dimensions of the second arm segment 14.2 are designed such that it can be inserted into the first arm segment 14.1 and moved along the first arm segment 14.1.

[0026] An inner sliding part 21 can be inserted into the first arm link 14.1 on the side facing the second arm link 14.2. The inner sliding part 21 is sleeve-shaped and adapted to the internal dimensions of the cross-section of the first arm link 14.1 so that it can be inserted into the front side of the first arm link 14.1 with a tight fit. The inner sliding part 21 has a sleeve-shaped insertion section 21.2 that rests against the inner wall 19 of the first arm link 14.1.

[0027] On the side facing away from the 1st arm member 14.1, the inner sliding part 21 has a circumferential frame section 21.1 which, in the inserted position of the inner sliding part 21 (see Fig. 3), rests on the front side against the cross section of the 1st arm member 14.1.

[0028] The circumferential insertion section 21.2 is penetrated by three locking fingers 25 distributed around the circumference, which are integrally formed on the frame section 21.1 and freely projecting from it. Each locking finger 25 has a locking projection 26 at its end facing away from the frame section 21.1. Corresponding locking recesses 27 are formed in the wall of the first arm member 14.1, into which the locking projection 26 of the locking fingers 25 can engage.

[0029] To assemble the inner sliding part 21, its sleeve-shaped insertion section 21.2 is inserted into the front of the first arm member 14.1, elastically deforming the locking fingers 25 radially inward, until the frame section 21.1 rests against the front of the first arm member 14.1 and the locking projections 26 each engage in one of the locking recesses 27. The inner sliding part 21 is then securely attached to the first arm member 14.1.

[0030] The second arm link 14.2 carries an outer sliding part 22 of a different design. The outer sliding part 22 is pushed onto the outside of the second arm link 14.2 in the longitudinal direction thereof. It has a sleeve-shaped base section 22.1, which is designed such that the outer sliding part 22 can be placed on the end face of the second arm link 14.2 in such a way that it surrounds the end region of the second arm link 14.2.

[0031] The circumferential base section 22.1 is penetrated by three locking fingers 25 distributed around the circumference, which are integrally formed on the base section 22.1 and freely projecting from it. Each locking finger 25 has a locking projection 26 at its free end. Corresponding locking recesses 27 are formed in the wall of the second arm member 14.2, into which the locking projection 26 of the locking fingers 25 can engage.

[0032] To assemble the outer sliding part 22, its sleeve-shaped base section 22.1 is pushed onto the front side of the second arm member 14.2, elastically deforming the locking fingers 25 radially outward until the locking projections 26 each engage from the outside in one of the locking recesses 27. The outer sliding part 22 is then securely attached to the second arm member 14.2.

[0033] When the inner sliding part 21 and the outer sliding part 22 are mounted and the two arm members 14.1 and 14.2 are inserted into each other, two sliding parts 21, 22 are arranged between the outer wall 20 of the 2nd arm member 14.2 and the inner wall 19 of the 1st arm member 14.1, which are axially spaced apart in the longitudinal direction of the telescopic arm 14.

[0034] Fig. 3 shows a telescopic arm 14 in an exploded, perspective view. The telescopic arm 14 has a total of three arm segments, namely the first arm segment 14.1, the second arm segment 14.2, and a third arm segment 14.3 adjoining the second arm segment 14.2.

[0035] The first arm member 14.1 is designed as a hollow profile and carries at its left end according to Fig. 3 a first end piece 23, via which the telescopic arm 14 can be mounted in an articulated manner on the holding device 17.

[0036] The 1st arm link 14.1 carries on its side facing the 2nd arm link 14.2 the inserted inner sliding part 21, which is locked to the 1st arm link 14.1.

[0037] The dimensions of the second arm link 14.2 are designed such that it can be inserted into the first arm link 14.1 and retracted along the first arm link 14.1. The second arm link 14.2 carries the outer sliding part 22 at its end facing the first arm link 14.1, which is placed on the outside of the end region of the second arm link 14.2 and locked thereto.

[0038] At its end facing away from the 1st arm link 14.1 and towards the 3rd arm link 14.3, the 2nd arm link 14.2 carries a further inner sliding part 21 which is inserted into the 2nd arm link 14.2 and locked thereto.

[0039] The 2nd arm link 14.2 is also designed as a hollow profile and can accommodate the 3rd arm link 14.3 in such a way that the 3rd arm link 14.3 can be retracted into the 2nd arm link 14.2.

[0040] The 3rd arm link 14.3 carries at its end facing the 2nd arm link 14.2 a further outer sliding part 22, which is placed from the outside onto the end of the 3rd arm link 14.3 and locked thereto.

[0041] The 3rd arm link 14.3 carries a 2nd end piece 24 at its end facing away from the 2nd arm link 14.2, the right end as shown in Fig. 3, via which the telescopic arm can be connected in an articulated manner, for example to the drop rod 16.

Claims

Patent claims 1. Awning (10) with a rotatably mounted fabric shaft (11), an awning fabric (15), a projection rod (16) and at least one driven, multi-part telescopic arm (14), wherein the awning fabric (15) is connected to the fabric shaft (11) in the region of an inner fabric edge and to the projection rod (16) in the region of an opposite outer fabric edge, wherein the projection rod (16) is adjustable by means of the telescopic arm (14) between a retracted position, in which the awning fabric (15) is wound onto the fabric shaft (11), and an extended position, in which the awning fabric (15) is stretched, wherein the telescopic arm (14) has at least two arm members (14.1, 14.2, 14.3), wherein a first arm member (14.1) is designed at least in sections as a receiving hollow profile, into which a second arm member (14.2) can be inserted in such a way that it is relative to the 1st arm joint (14.1) is adjustable in the longitudinal direction of the telescopic arm (14), and wherein at least one sliding part (21, 22) is arranged between an inner wall (19) of the 1st arm member (14.1) and an outer wall (20) of the 2nd arm member (14.2), characterized in that the sliding part (21, 22) has at least one locking finger (25) which is formed integrally with the sliding part (21, 22) and which carries a locking projection (26) which engages in a locking recess (27) of the 1st arm member (14.1) or the 2nd arm member (14.2) in such a way that the sliding part. (21, 22) is locked to the 1st arm link (14.1) or to the 2nd arm link (14.2).

2. Awning according to claim 1, characterized in that several locking fingers (25) are arranged distributed over the circumference of the sliding part (21, 22).

3. Awning according to claim 1 or 2, characterized in that the sliding part (21, 22) is designed as a sleeve or sleeve.

4. Awning according to one of claims 1 to 3, characterized in that the sliding part (21) has a frame section (21.1) which rests on the end face of the 1st arm member (14.1) or the 2nd arm member (14.2).

5. Awning according to claim 4, characterized in that the locking finger (25) is formed so as to project freely onto the frame section (21.1).

6. Awning according to one of claims 1 to 5, characterized in that the sliding part (21, 22) has a sleeve-shaped insertion section (21.2) which can be inserted into the 1st arm member (14.1) or into the 2nd arm member (14.2).

7. Awning according to one of claims 1 to 6, characterized in that the sliding piece (22) is designed such that it can be placed on the front side of the 1st arm member (14.1) or the 2nd arm member (14.2) such that it surrounds the 1st arm member (14.1) or the 2nd arm member (14.2).

8. Awning according to one of claims 1 to 7, characterized in that between the outer wall (20) of the 2nd arm member (14.2) and the inner wall (19) of the 1st arm member (14.1) at least two sliding parts (21, 22) are arranged, which in the longitudinal direction of the telescopic arm (14) are axially spaced.

9. Awning according to claim 8, characterized in that one of the sliding parts (21) is connected to the 1st arm member (14.1) and the other sliding part (22) is connected to the 2nd arm member (14.2) is locked.

10. Awning according to claim 8 or 9, characterized in that one of the sliding parts (21) is inserted into the 1st arm member (14.1) and the other sliding part (22) is pushed onto the outside of the 2nd arm member (14.2).

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