WO1998012400A1

WO1998012400A1 - Handrail

Info

Publication number: WO1998012400A1
Application number: PCT/DE1997/002115
Authority: WO
Inventors: Rudolf Block
Original assignee: Rudolf Block
Priority date: 1996-09-21
Filing date: 1997-09-18
Publication date: 1998-03-26
Also published as: DE19638766A1

Abstract

Disclosed is a handrail (1) with a steel core (4) and a sheath (5), combined with a carrying device (3). The sheath (5) has two layers, the outer layer (7) having a well-closed and preferably smooth surface and being made of a more resistant and form-rigid material than that used for the inner layer. The form-rigidity of both layers (5; 7) is such that, when bent, the handrail (1) shows just a slight profile deflection at the bending point. The carrying device (3) comprises bearing plates (8) secured to posts (9) or brackets. The bearing plates are separated from the steel core (4) by spacing bushes (14). The carrying device (3) is fixed to the handrail (1) by means of capscrews (12), which are screwed in the steel core (4) through holes provided in the bearing plates (8) and through the spacing bushes (2).

Description

Ha n dlau f

Stairs are usually provided with a handrail on at least one side. Sometimes there is a handrail on both sides. Among these handrails there is an embodiment which consists of a textile rope with a steel rope core. As a holding device, clamps are available, which are attached to the adjacent component via support arms or posts.

The surface structure of the textile rope is rough and therefore not supple for a hand sliding along it. In addition, the outside of the handrail is repeatedly interrupted by the clamps of the holding device, which is also disadvantageous for the use of the handrail.

The invention has for its object to provide a handrail that has a greater suppleness and the least possible interruptions in the surface. This object is achieved by a handrail with the features specified in claim 1.

Because the outer layer has a closed and at least approximately smooth surface, the handrail has great flexibility for a hand sliding over it. In addition, the inner layer surrounding the steel core has a lower dimensional stability and thus a greater flexibility than the outer layer, which in turn has a higher toughness, so that on the one hand the handrail maintains its smooth surface and on the other hand shows a certain flexibility that gives the feeling the speed of the handrail increased. Thanks to the steel cable core, the supporting ability of the handrail is preserved overall. Because of the inner and outer layers overall have sufficient dimensional stability, the base body of the handrail can be laid by bending the steel core around bends or corners without losing the original outer shape of the base body.

With an embodiment according to claim 2 and / or claim 3, in particular the mechanical requirements on the base body are achieved particularly well. With an embodiment according to claim 4 it is achieved that all layers of the handrail are intimately connected to one another and mutually well mutually.

In an embodiment according to claim 5, the two outer layers have the same layer thickness all around, so that irregularities in the course of the outer shape are avoided when laying the base body, in particular when the base body is laid along a spatially curved line.

An embodiment according to claim 6 facilitates the laying of the base body even with bends, an embodiment according to claim 7 increases the rigidity and load-bearing capacity of the handrail.

An embodiment according to claim 8 creates a versatile holding device, the use of support plates which are matched to the outer shape of the base body improve the durability of the handrail even under load. In addition, the protrusion of the parts of the holding device over the base body is reduced to a minimum.

With an embodiment according to claim 9, the base body of the handrail can be connected particularly easily to the parts of the carrying device. A further development according to claim 10 gives the connection a relatively high rigidity and rigidity. The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing.

The handrail 1 is formed by an elongated base body 2 and by a supporting device 3. The basic body has a circular cylindrical outer shape.

The base body 2 has a steel cable core 4. This is surrounded by a casing 5. The casing is formed by an inner layer 6 and an outer layer 7.

The steel cable core 4 can in turn have a textile core or a steel wire core or a combination of both.

The inner layer 6 is formed on the outside of the steel cable core 4 in the extrusion process, with a foamed plastic which is a thermoplastic elastomer with a Shore A hardness of at least approximately 85. Immediately following the shaping of the inner layer 6, the outer layer 7 is also applied in the extrusion process. This is made of a plastic, preferably of polyethylene, which has a Shore D hardness of at least approximately 60. In contrast to the inner layer 6, which has a rougher surface due to its production from a foamed plastic, the outer layer 7 has the smoothest possible surface. In addition, it is expedient that the material of the outer layer 7 has a greater toughness and also a greater dimensional stability than the material of the inner layer 6.

The carrying device 3 has support plates 8 which are arranged at certain intervals along the laying track of the base body 2. The support plates 8 are sections of a circular ring cylinder, the inside of which is matched to the outside of the base body 2. The support plates 8 are connected on their outside to a post 9 or a support arm which is connected to the neighboring one Part of the building is detachably or non-detachably connected. The support plates can be detachably connected to their posts or support arms by screwing them. However, they can also be permanently connected to one another, for example by welding them together.

To connect the base body 2 with the parts of the carrying device 3, 8 connecting elements are provided in pairs on each support plate. These include two through holes 11, which are arranged along a surface line of the cylindrical form of the support plate 8 at a certain distance from the post 9 or the support arm and are aligned radially to the cylindrical shape of the support plate 8. The through holes 11 are expediently countersunk on the outside of the support plate 8. As additional connecting elements there are two cap screws 12, which are expediently designed as countersunk screws or as countersunk pan head screws. Their length is at least approximately equal to the distance from the outside of the support plate 8 to the outside of the steel cable core 4 facing away from the support plate 8. They are provided with a thread 13 which is designed in the manner of the thread of chipboard screws. The pitch of the threads of the thread 13 is expediently matched to the individual wires of the steel cable core 4 in such a way that these individual wires fit into a thread path of the thread 13 and thus enable the thread 13 to be anchored as well as possible in the steel cable core 4.

The support device 3 also includes two spacer sleeves 14. Their clear dimension is matched to the outside diameter of the screws 12. Its length is matched to the distance between the inside of the support plate 8 and the outside of the steel cable core 4 facing it. The spacer sleeves 14 are inserted into recesses in the base body 12, which are provided in the line of alignment of the through holes 11 in the support plate 8. You can loose in it be used. The spacer sleeves 14 can also be firmly connected to the support plate 8 in the line of alignment of the through holes 11, in particular welded to it. The latter improves the cohesion of the carrying device 3 with the base body 2 and also increases the stability of the handrail.

Reference list

1 handrail

2 basic bodies

3 carrying device

4 steel cable core

~ Sheathing

6 inner layer

7 outer layer

8 platenπ

9 posts

11 through hole

12 screw head

13 threads

14 spacers

Claims

claims

1. Handrail with the features:

- There is an elongated base body (2) which is formed

- - by a steel cable core (4) and - - by a sheathing (5) surrounding the steel cable core (4),

- The base body (2) is connected to a carrying device (3), g e k e n n e e c h n e t by the features: - The casing (5) is formed by an inner layer (6) and an outer layer (7),

- The outer layer (7) has a closed and at least approximately smooth surface,

- The material of the outer layer (7) has a greater toughness and a greater dimensional stability than the material of the inner layer (6),

- The dimensional stability of the inner layer (6) and the outer layer (7) is so great that the profile change at the bending point is a minimum when bending the base body (2).

2. Handrail according to claim 1 with the further features:

- The inner layer (6) is made of plastic, preferably a foamed plastic, - The plastic is preferably a thermoplastic elastomer (TPE) with a Shore A hardness of at least approximately 85.

3. Handrail according to claim 1 or 2 with the further features:

- The outer layer (7) is made of a plastic, preferably of polyethylene,

- The plastic preferably has a Shore D hardness of at least approximately 60.

4. Handrail according to one of claims 1 to 3, g e k e n n z e i c h n e t by the features:

- The inner layer (6) is on the outside of the steel cable core (4) in the extrusion process, - The outer layer (7) is formed immediately after the shaping of the inner layer (6) on the outside in the extrusion process.

5. Handrail according to one of claims 1 to 4 with the further feature:

- The outer shape of the base body (2) is designed as a circular cylinder.

6. Handle according to one of claims 1 to 5 with the further feature:

- The steel cable core (4) in turn has a textile core.

7. Handrail according to one of claims 1 to 5 with the further feature:

- The steel cable core (4) in turn has a steel wire core.

8. Handrail according to one of claims 1 to 7 with the further features:

- The support device (3) has posts (9) and / or support arms which are detachably or non-detachably connected to a building part adjacent to them,

- The carrying device (3) has support plates (8), - - which are detachably connected to the base body (2) on the one hand by means of connecting elements (11; 12) and

- - The other hand with one of the posts (9) or

Support arms are detachably or non-detachably connected,

- The side of the support plates (8) facing the base body (2) is preferably matched to the outer shape of the base body (2).

9. Handrail according to claim 8 with the further features:

a connecting hole or a plurality of through holes (11) are provided on the support plates (8) as connecting elements, which are preferably countersunk on the outside of the support plates (8),

- Head screws (12) are available as additional connecting elements,

- - which can be pushed through the through holes (11) of the support plates (8), - whose length is at least approximately equal to the distance from the outside of the support plate (8) to the outside of the steel cable core (4) facing away from the support plate (8) is and

- - Which are preferably provided with a thread (13) which is the same or at least similar to the thread of

Chipboard screws is.

10. Handrail according to claim 9 with the further features:

- In the middle of the cap screws (12) there is a spacer sleeve (14) between the support plate (8) and the

Steel cable core (4) of the base body (2) arranged,

- The spacer sleeves (14) are preferably firmly connected to the support plate (8), preferably welded to it.