DE102021200384A1 - Guide rail for a linear guide and linear guide therewith - Google Patents

Abstract

Disclosed is a guide rail for a carriage of a linear guide, with a rail body extending in the longitudinal direction with a side that can be turned towards the carriage, which is covered in the longitudinal direction by a flat strip, which is angled with at least one end section towards a front side of the rail body arranged in the longitudinal direction, an angled cover unit being provided, of which the end section is covered and secured in position on the rail body.A linear guide with the guide rail and a carriage guided thereon is also disclosed.

Description

The invention relates to a guide rail for a linear guide according to the preamble of patent claim 1, and a linear guide with it, according to patent claim 10.

The guide rails of such a linear guide are usually fastened to a superordinate structural unit, for example a linear guide housing or an assembly table, by means of screws which are inserted into bores in the guide rail from the surface facing the carriage. In order to prevent the movement of the carriage from being disturbed by these holes and contamination of the interior of the carriage as a result of dirt accumulation on the guide rail, and there in particular in the fastening holes, the latter are covered by a masking tape.

In order to avoid injuries to the operating personnel on the one hand and to be able to ensure that the cover strip is held securely on the guide rail on the other, in particular to be able to prevent axial displacement of the cover strip, i.e. displacement in the longitudinal direction of the guide rail, tape securing units, for example in Form of protective caps provided. For this purpose, the end of the belt is angled towards the end face of the guide rail, covered by the protective cap and both are screwed to the end face of the guide rail, as a result of which the end of the belt is perforated and clamped. Such a safety system is shown in the publication RDEFI 82 081/2004-04 “Ball/roller guides, assembly instructions for the cover strip” from the applicant.

The pamphlet EP1 195 535 B1 the applicant shows an alternative solution with a clipped or latched protective cap, with screwing or pinning to secure the end of the tape remaining necessary here.

A disadvantage of both solutions is the use of screw connections, which increase the outlay in terms of device technology and assembly and can possibly lead to a weakening of perforated sections of the cover strip or the guide rail.

In contrast, the invention is based on the object of creating a guide rail with a covering strip that can be fixed in a simpler way and of providing a linear guide with such a guide rail.

These tasks are each solved by a guide rail with the features of patent claim 1 and a linear guide with the features of patent claim 10.

Advantageous developments of the invention are described in the respective dependent patent claims.

A guide rail for a carriage of a linear guide has a rail body extending in the longitudinal direction. It can be used for both a roller bearing carriage and a plain bearing carriage. The rail body has a side that can be turned towards the carriage, in particular an upper side, which is covered by a flat strip in the longitudinal direction. In particular, the side has the openings of through-holes for fastening means—for example screws—by means of which the guide rail can be fastened to a support component or a foundation. The cover band is used in particular for the safe and low-friction separation of the openings from an adjacent surface or contact surface of the carriage. On at least one end section, the flat strip is angled or turned over toward a face of the rail body arranged in the longitudinal direction. Furthermore, an angled, in particular cap or strip-shaped cover unit is provided, of which the end section is covered and secured in position on the rail body. The cover unit is secured in position on the rail body, in particular in a form-fitting manner, and it has sections between which the end section of the cover strip is clamped in a non-destructive manner.

This has the advantage that the cover strip is fixed to the rail body in a simple and non-destructive manner. In particular, the securing of the position and the clamping are detachable.

In this context, non-destructive means that no drilling, no perforation of the cover strip or the like is necessary to fix its end section.

In a further development, the flat strip is fixed and clamped on both sides of the rail body in a manner according to the invention.

In a development, at least one of the cover units is designed with a tensioning device for tensioning the flat strip.

The cover unit is designed to be mountable with little effort if, in a further development, a first of the sections is pushed onto the rail body in the longitudinal direction and/or clipped onto the rail body normally thereto.

In order to be able to guide the end section between the sections and make it clampable there, in a further development a first of the sections has a slot-shaped through-hole through which the end section passes. The end section is then spatially angled behind this passage, in particular between the sections.

One advantage is that an edge of the first section where the end section is angled can and does turn out to be significantly more sharp-edged than that of the rail body according to the prior art (when angled directly on the rail body). This is because the carriage is pushed onto the guide rail via the edge of the rail body, whereby its end seal must not be damaged, which is why the said edge must be comparatively well rounded. The angling of the end section on the first section is accordingly of a significantly smaller radius and offers the end section of the flat strip a better hold on the rail body.

The first section has a good hold on the rail body if, in a further development, the end face is at least partially encompassed by the first section. In particular, for this purpose the first section has an edge which extends essentially parallel to the longitudinal direction and along a peripheral surface of the rail body.

In a further development, the first section is additionally fixed to the rail body by at least one fastening means, in particular a screw, in particular one arranged on the front side.

An outer cross-section of the rail body and an inner cross-section of the first section are parallel and/or form-fitting to one another, at least in sections.

In a further development, a second of the sections is pushed onto the first section in the longitudinal direction and/or clipped onto the first section in the normal way, which also means simple assembly.

Alternatively, however, the second section can be pivotally connected to the first section and pivoted onto it. This makes assembly safer as there is no chance of section loss or misassembly.

In a further development, the second section is sunk into the first, giving a more compact appearance and greater security against the sections becoming detached from one another.

For this purpose, the first section has a lowered surface section which is adapted to a contour of the second section and into which the second section is inserted or can be inserted. In particular, a surface section of the first section that is left standing, that is to say not lowered, ends flush with the second section, as a result of which even greater security against the sections becoming detached from one another is realized.

The second section is preferably latched and/or screwed to the first section. The first solution is easy and quick to assemble and disassemble, the second enables particularly high clamping forces that are easy to set.

In a further development, the first section is secured in a form-fitting manner in the longitudinal direction against being pulled off the rail body, for example by latching respective undercuts with one another, of which at least one is elastic.

A linear guide has a guide rail, which is designed according to at least one aspect of the preceding description, and a carriage guided thereon.

• 1 eine Linearführung gemäß einem Ausführungsbeispiel in perspektivischer Ansicht von oben,
• 2 ein Endabschnitt der Führungsschiene der Linearführung gemäß 1 in perspektivischer Ansicht von unten,
• 3 den Endabschnitt der Führungsschiene gemäß 2 mit teilmontierter Abdeckeinheit, in perspektivischer Ansicht von oben, und
• 4 den Endabschnitt der Führungsschiene gemäß 2 und 3 mit abgewinkeltem Abdeckband, in perspektivischer Ansicht von oben.

An exemplary embodiment of a linear guide according to the invention with a guide rail and carriage according to the invention is explained in more detail below in drawings. Show it:

• 1 a linear guide according to an embodiment in a perspective view from above,
• 2 an end portion of the guide rail according to the linear guide 1 in a perspective view from below,
• 3 according to the end section of the guide rail 2 with partially assembled cover unit, perspective view from above, and
• 4 according to the end section of the guide rail 2 and 3 with angled cover strip, perspective view from above.

According to 1 a linear guide 1 has a guide rail 2 extending in the longitudinal direction with a rail body 4 and a carriage 6 guided thereon by means of roller bearings (not visible). In this way, recesses and screws (concealed) accommodated therein for fastening the guide rail 2 to a support or foundation (not shown) collision-safe separated from the carriage 6.

2 shows an end portion of the guide rail 2 of the linear guide 1 according to FIG 1 in a perspective view from below, a two-part, cap-like cover unit 12 being provided on one end face 10 of the rail body 4 in the exemplary embodiment, via which the flat strip 8 is fixed to the rail body 4 . The cover unit 12 has a first section 14, which is arranged directly on the rail body 4, and a second section 16, which is predominantly the same shape, is latched and is on the outside. Between the sections 14, 16 is an end section (18, cf. 3 and 4 ) of the flat strip 8 on the one hand angled from the top in the direction towards the end face 10, and on the other hand clamped non-destructively.

3 shows the end portion of the guide rail 2 according to FIG 2 with a partially assembled cover unit 12, more precisely with the second section 16 removed, in a perspective view from above. The first section 14 has a slot 20 which extends parallel to the upper side of the rail body 4 and through which the end section 18 of the flat strip 8 extends, this being rounded off in the shape of a tongue. 3 thus shows a partially assembled state of the guide rail 2.

Based on this shows 4 the guide rail 2 according to 2 , The end section 18 of the flat strip 8 being angled downwards, ie in the direction towards the end face 10 . The first section 14 extends with a tongue 22 along the end face 10, so that the end section 18 cannot touch the end face 10, but rather the tongue 22 represents a stop for the end section 18 during bending.

2 FIG. 12 then shows the fully assembled state of the guide rail 2, with the second section 16 being clipped onto the first section 14 from a frontal direction in the exemplary embodiment.

The material of the cover unit 12, 14, 16 can be metal or plastic, or a combination of both materials.

A mounting method of the flat strip 8 on the rail body 4 can be as follows: placing the flat strip 8 on the top; sliding the first section 14 so that the end section 18 penetrates the slot; Sliding the first section 14 onto the rail body 4 until the tongue 22 abuts the end face 10; Bending/bending the end section 18 until it hits the tongue 22 and clipping the second section 16 onto the first 14 until they latch together while maintaining a resulting clamping or prestressing
With the end portion 18 between the sections 14, 16 is defined.

Disassembly can proceed as follows: detaching and pulling off the second section 16 from the first 14; Sufficient bending up of the end section 18; Peel off the second section 16.

One of the advantages of this method is that sections 14, 16 are not damaged and can therefore be reused.

The applicant reserves the right to make an independent claim to such a method.

Reference List

1

linear guide

2

guide rail

4

rail body

6

guide carriage

8th

ribbon

10

face

12

cover unit

14

first section

16

second part

18

end section

20

slot

22

Tongue

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 1195535 B1 [0004]

Claims (10)

Guide rail for a carriage (6) of a linear guide (1), with a longitudinally extending rail body (4) with a side facing the carriage (6) which is covered in the longitudinal direction by a flat strip (8) which has at least one end section (18) is angled towards an end face (10) of the rail body (4) arranged in the longitudinal direction, an angled cover unit (12) being provided, by which the end section (18) is covered and secured in position on the rail body (4), characterized that the cover unit (12) is secured in position on the rail body (4) and has sections (14, 16) between which the end section (18) is clamped non-destructively. guide rail claim 1 , A first (14) of the sections (14, 16) being pushed onto the rail body (4) in the longitudinal direction and/or clipped onto the rail body (4) perpendicular thereto. guide rail claim 1 or 2 , wherein a first (14) of the sections (14, 16) has a slot-shaped through-hole (20) through which the end section (18) passes. guide rail claim 2 or 3 , wherein the end face (10) of the first portion (14) is at least partially encompassed. Guide rail according to one of claims 2 until 4 , wherein a cross section of the rail body (4) and an inner cross section of the first section (14) are formed parallel and/or in a form-fitting manner at least in sections. Guide rail according to one of claims 2 until 5 wherein a second (16) of the sections (14, 16) is longitudinally slid onto the first section (14) and/or normal thereto to the first section. Guide rail according to one of claims 2 until 5 , a second of the sections being pivotally connected to the first section and pivoted onto the first section. guide rail claim 6 or 7 , wherein the second section (16) is clipped or latched to the first section (14). Guide rail according to one of claims 2 until 8th , wherein the first section (14) is positively secured in the longitudinal direction against being pulled off the rail body (4). Linear guide with a guide rail (2), which is designed according to one of the preceding claims, and with a carriage (6) guided thereon.

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