DE202017007523U1 - Furniture with a sliding element that can be moved on a runner and a guide device - Google Patents

Abstract

Furniture (1) with at least one sliding element (3, 4) that can be moved on a running profile (5) and a guide device (10) with a guide profile along which at least one guide part (71) is guided, which is on the sliding element (3, 4) is held, the guide profile (9) guiding the guide part (71) in a horizontal direction perpendicular to the longitudinal direction of the guide profile (9), characterized in that the guide part (71) is fixed to a mounting element ( 70) is held movably in a vertical direction and is pivotally mounted, the maximum movement of the guide part (71) being limited by an upper and a lower stop.

Description

The present invention relates to a piece of furniture with at least one sliding element that can be moved on a runner profile and a guide device with a guide profile along which at least one guide part that is held on the sliding element is guided, the guide profile guiding the guide part in a horizontal direction perpendicular to the longitudinal direction of the guide profile leads.

From the DE 10 2013 111 482 A1 a guide device for a sliding door is known, in which a guide element fixed to the sliding door engages in a downwardly open groove of a rail. The height of the guide element cannot be adjusted, which is why the groove is designed to be comparatively deep in order to ensure that the guide element overlaps at the side. Since tolerances can occur in the vertical direction, the groove walls must be designed to be long in the vertical direction, which leads to a high material requirement and runs counter to the requirement for a compact design.

DE 27 40 374 A1 discloses a screen for wet rooms, in which a partition wall can be moved via a guide bar on a guide body. The guide bar is slidably mounted and preloaded by a spring.

the DE 10 2014 114 339 A1 therefore discloses a guide device for guiding a sliding door guided on a runner profile, in which a guide part that can be fixed on the sliding door can be latched or attached to the guide profile. Although this leads to a compact design, there can be grinding noises between the guide part and the guide profile in the case of tolerances in the vertical direction, especially when not only horizontal guides but also vertical forces are transmitted between the guide part and the guide profile. Higher loads can cause damage. In addition, due to the tolerances, there is a not inconsiderable assembly effort, since fasteners may have to be removed and repositioned again to compensate for these tolerances.

It is therefore the object of the present invention to create a piece of furniture with a guide device for guiding a sliding element that can be moved on a runner profile, which allows uncomplicated tolerance compensation and thus better assembly friendliness with a compact design.

This object is achieved with a piece of furniture with a guide device having the features of claim 1.

The guide device according to the invention comprises a guide profile, along which at least one guide part is linearly guided, the guide part being movably held in the vertical direction on a mounting element that can be fixed to the sliding element. As a result, the guide part can be positioned at different heights in the vertical direction relative to the mounting element, which enables tolerance compensation in the vertical direction. Such tolerances can arise due to different heights on the furniture body, weights of the sliding element, length of the sliding element or other assembly tolerances. In any case, the positioning of the guide part can take place flexibly with regard to the vertical movement, so that the guide part is mounted “floating” on the mounting element to a certain extent in the vertical direction. Such a floating mounting also ensures that the guide part can be moved easily on the guide profile, since in the horizontal direction perpendicular to the longitudinal direction of the guide profile, executives can be transmitted between the guide profile and the guide part, but no additional forces act in the vertical direction, since the guide part is stepless in the vertical direction is movable.

Furthermore, due to the vertical mobility when the sliding element is placed on a floor, the guide part can be moved in the vertical direction to above a lower end face of the sliding element when the movable guide part protrudes below the lower end face. In this way, damage to the guide part or to the floor caused by the guide part already mounted on the sliding element can be avoided.

The stepless vertical mobility of the guide part can be used in a sliding element that can be moved in front of the furniture body, with the running part being mounted near the top of the sliding element and the running profile being arranged on the furniture body on the front side in front of the top panel of the body. In this embodiment, the guide device is mounted near the underside on the sliding element and engages with a guide profile that is arranged in front of the floor or base of the furniture body. In the case of inset sliding elements in the furniture body, the at least one guide part can also be mounted close to the upper side of the sliding element so that it can move vertically continuously, the guide profile being able to be arranged on or in the top panel of the furniture body on the side facing the sliding element. In this embodiment, the running profiles are arranged on or in the floor of the furniture body.

The guide part is preferably pivotably mounted on the mounting element. The pivoting does not have to take place exactly in the vertical direction, but can also take place at an angle to the vertical direction.

For easy assembly, the guide part can be snapped elastically onto the guide profile. For this purpose, the guide profile can have a thickened head section on a web or a groove in order to interact with corresponding guide devices on the guide part. A corresponding positive fit of the guide devices on the guide part with the guide profile ensures guidance in the horizontal direction perpendicular to the longitudinal direction of the guide profile.

For reliable guidance of the guide part on the mounting element, guide rails can be provided on the mounting element, which the guide part engages behind. The mounting element can then be mounted on a rear side of a sliding element and the guide part can then be inserted into the guide webs on the mounting element, being slidably held on the sliding element. The guide part can preferably be moved in the vertical direction up to a stop, the guide part being held captive on the mounting element in a pre-mounting position.

At the end facing the guide profile, the guide element has at least one sliding element which can be coupled in a form-fitting manner to a web of the guide profile. The design of the head section on the sliding element can be coordinated with the cross-section of the guide profile, so that gripping around is possible with an external guide profile cross-section, or gripping behind is possible with an internal guide profile cross-section. The coupling takes place transversely to the longitudinal direction of the guide profile by elastic deformation of the head section on the sliding element.

Preferably, the guide part has at least one sliding element, which encompasses a head section on a web of the guide profile. Such sliding elements can be formed by bendable webs or other guide elements that can be latched onto the guide profile. The sliding elements can be made of plastic or metal. Alternatively or additionally, one or more rollers can also be provided in order to ensure smooth movement of the guide part relative to the guide profile.

The guide part can also be designed in several parts, preferably in two parts, consisting of a base body and a sliding element. A sliding element is placed on a horizontal web of the base body, which is preferably L-shaped, and fixed to it in a form-fitting and/or material-to-material and/or preferably force-fitting manner, particularly preferably in a clamping and/or latching manner. In this case, the base body can consist of a different material than the sliding element.

In a further embodiment, an activator that can be brought into engagement with a damper is provided on the guide part. The activator can be arranged as an additional functional part on the guide part in order to brake a movable furniture part, such as a sliding door. Alternatively or additionally, the activator can also be brought into engagement with a self-closing mechanism or another component, for example an end stop. The activator can have a contact surface at a distance from a guide profile, which is aligned, for example, perpendicular to the longitudinal direction of the guide profile. In the case of a multi-part design of the guide part, the activator can also be formed integrally on the sliding element.

• 1 eine perspektivische Ansicht eines erfindungsgemäßen Möbels mit teilweise geöffnetem vorderem Schiebeelement;
• 2 einen Teilschnitt durch das Möbel der 1 entsprechend der Linie II-II mit den Führungseinrichtungen für das vordere und das hintere Schiebeelement in der montierten Position;
• 3 eine Ansicht entsprechend der 2 ohne das vordere Schiebeelement mit der Führungseinrichtung für das hintere Schiebeelement bei der Montage;
• 4A bis 4E mehrere Ansichten eines ersten Ausführungsbeispiels einer nicht erfindungsgemäßen Führungseinrichtung;
• 5A bis 5E mehrere Ansichten eines zweiten Ausführungsbeispiels einer nicht erfindungsgemäßen Führungseinrichtung;
• 6A und 6B zwei Ansichten der Führungseinrichtung der 5 bei der Montage;
• 7A bis 7E mehrere Ansichten einer nicht erfindungsgemäßen dritten Ausführungsform einer Führungseinrichtung;
• 8A bis 8E eine Ansicht einer nicht erfindungsgemäßen vierten Ausführungsform einer Führungseinrichtung;
• 9 eine Ansicht einer nicht erfindungsgemäßen fünften Führungseinrichtung in einer montierten Position;
• 10 eine Detailansicht der Führungseinrichtung der 9;
• 11 eine Detailansicht der Führungseinrichtung der 9;
• 12 eine Ansicht eines weiteren nicht erfindungsgemäßen Ausführungsbeispiels einer Führungseinrichtung;
• 13 eine Detailansicht der Führungseinrichtung der 12;
• 14 eine Detailansicht der Führungseinrichtung der 12;
• 15A bis 15E mehrere Ansichten einer erfindungsgemäßen weiteren Ausführungsform einer Führungseinrichtung; und
• 16A bis 16C mehrere Ansichten eines verschwenkbaren Hebels der Führungseinrichtung der 15.

The invention is explained in more detail below using several exemplary embodiments with reference to the accompanying drawings. Show it:

• 1 a perspective view of a piece of furniture according to the invention with a partially open front sliding element;
• 2 a partial section through the furniture 1 according to the line II-II with the guide devices for the front and the rear sliding element in the mounted position;
• 3 a view according to the 2 without the front sliding element with the guide device for the rear sliding element during assembly;
• 4A until 4E several views of a first embodiment of a guide device not according to the invention;
• 5A until 5E several views of a second embodiment of a guide device not according to the invention;
• 6A and 6B two views of the guide device 5 during installation;
• 7A until 7E several views of a non-inventive third embodiment of a guide device;
• 8A until 8E a view of a non-inventive fourth embodiment of a guide device;
• 9 a view of a fifth guide device not according to the invention in an assembled position;
• 10 a detailed view of the guide device 9 ;
• 11 a detailed view of the guide device 9 ;
• 12 a view of a further non-inventive embodiment of a guide device;
• 13 a detailed view of the guide device 12 ;
• 14 a detailed view of the guide device 12 ;
• 15A until 15E several views of a further embodiment of a guide device according to the invention; and
• 16A until 16C several views of a pivotable lever of the guide device 15 .

A piece of furniture 1 comprises a furniture body 2 on which a rear sliding element 3 and a front sliding element 4 are movably mounted. For this purpose, a running rail 5 is fixed to a top panel 7 of the furniture body 2, on which running parts 6 can be moved, which are fastened to the front sliding element 4 near the upper side and carry the front sliding element 4 in a hanging manner. A process of the sliding element 4 in front of the sliding element 3 is made possible by an inverted U-shaped design of the running parts 6, wherein the running parts 6 can overlap the upper side of the rear sliding element 3 in an arc. The rear sliding element 3 is also suspended from the running rail 5 via running parts, which are not visible here, because the design of the running parts does not protrude beyond the top of the sliding element 3 and are also fastened near the top. The two top panels 7 are approximately the same width, so that the furniture body 2 is divided by a central wall, the top of which is visible as a separating surface between the two top panels 7 . Like the side walls, the middle wall bears the weight forces introduced by the sliding elements 3, 4 onto the running rail 5 onto the floor of the building. The sliding elements 3 and 4 are guided near their underside in the area of a floor 8 of the furniture body 2 on a guide profile 9 in order to ensure a constant distance for the respective sliding element 3, 4 from the front side of the floor 8 over the travel distance, so that the sliding elements 3, 4 are also guided parallel to the front of the furniture body 2 on its underside. For this purpose, correspondingly designed guide devices 10 are provided on the sliding elements 3 and 4, which make it possible to maintain the constant distance from the front side of the floor 8 over the travel distance for the respective sliding element 3, 4.

In 2 are in a partial section through the furniture 1 , corresponding to the section line II-II in 1 , The guide devices 10 for the front and the rear sliding element 3, 4 are shown in detail. The guide profile 9 is mounted on a front side of a base 11 in the area of the floor 8 . For this purpose, the guide profile 9 has a contact section which is fixed to the base 11 and from which two webs 90 and 91 protrude at a spatial distance from one another in the vertical direction, each of which has a thickened head section 92 . The sliding elements 3 and 4 are guided in the longitudinal direction of the guide profile 9 on the thickened head section 92 of the guide profile 9 .

A mounting element 15 is fixed to the sliding elements 3, 4 on the side facing the floor 8 or the base 11, which mounting element can advantageously be designed as an identical part. A guide part 12 for the rear sliding element 3 and a guide part 22 for the front sliding element 4 are held on the mounting elements 15 so as to be displaceable in a vertical direction. The guide parts 12 and 22 are each coupled to a head section 92 of the guide profile 9 .

The guide device for the rear sliding element 3 is in the 4A until 4E shown in detail. The mounting element 15 comprises two cuboid vertical strips 16 which are connected to one another via a connecting section 19 . A receptacle 17 for the guide part 12 is formed between the strips 16 . A guide web 18 is provided on each strip 16 on the side facing the receptacle 17 .

The guide part 12 is shown in an embodiment as an injection-molded part, with the draft angles for the tool division running centrally in the vertical direction, indicated by the central line. The guide part 12 comprises a displaceable holding section which is inserted into the receptacle 17, the opposite vertical edges of the holding section engaging behind the guide webs 18, as is well illustrated in FIG 4E , showing a cut along the line BB in 4B represents, is shown. A sliding element is integrally formed on the holding section, protruding at a distance such that after coupling with the head section 92 it is possible to guide the sliding element 3 parallel to the front of the furniture body 2 on its underside as well. The sliding element has a receptacle 13 and then two webs 14, clearly visible in FIG 4C , which are used as lead-in bevels when assembling the on measure 13 on the head section 92 are used. Furthermore, in 4D a latching lug 93 with a starting bevel 94, which is elastically supported by two recesses, shown in 4B , The connecting section 19 can overlap, so that after joining to the mounting element, a captive device is made possible until the sliding element 3 is mounted.

For assembly, the guide part 12 can be positioned adjacent to a head portion 92 of the guide profile 9, as shown in FIG 3 is shown. Due to the insertion bevels of the webs 14, a vertical displacement of the guide part 12 can first take place while the sliding element 3 is being coupled to the head section 92 in order to compensate for assembly tolerances, so that the receptacle 13 can then be bent elastically evenly over both webs 14. in order to latch the guide part 12 to the head section 92 in a joining direction transverse to the longitudinal extent of the sliding element 3 . Due to the elastic bending back of the receptacle 13 after lying behind the head section 92, the guide part 12 is then held positively on the head section 92 in the mounted position and ensures that the constant distance to the front of the floor 8 is maintained over the travel distance on the guide profile 9. In a vertical direction, however, the guide part 12 is held displaceably relative to the mounting element 15, so that only the low frictional forces when moving the holding section in the receptacle of the guide part 12 in the vertical direction during tolerance compensation during the movement of the sliding element 3 have to be overcome and thus a smooth-running, as well as largely noise-free guidance of the guide part 12 along the guide profile 9 is ensured.

In the 5A until 5E the guide part for the front sliding element 4 is shown, which is arranged at a greater distance from the guide profile 9. The mounting element 15 corresponds to the mounting element 15 for the rear sliding element 3, preferably as an identical part. The mounting element 15 is first mounted on the rear side of the sliding element 4 using screws or other fastening means, with corresponding openings 20 being formed in the strips 16 for this purpose. A guide part 22 that is modified relative to the guide part 12 is then held on the mounting element 15, which is angled and has a displaceable holding section 25, which is held on the mounting element 15, and a holding section 26, which is formed essentially perpendicularly thereto, on which a Recording 23 for the head portion 92 of the guide profile 9 and webs 24 are formed. In this respect, the guide part 22 can also be latched to a head section 92 of the guide profile 9 in a joining direction transverse to the longitudinal extent of the sliding element 4 . The displaceable holding section 25 engages behind the guide webs 18 on the mounting element 15 so that the guide part 22 can only be moved in the vertical direction and thus executives can be transmitted in the horizontal direction.

In the 6A and 6B two assembly positions of the front sliding element 4 with the guide part 22 are shown. If the sliding element 4 is removed from the running rail 5 on the furniture body 2, it may be necessary to place the sliding element 4 on a floor 28. Then the guide part 22 can be moved upwards on the mounting element 15, as is the case 6A and 6B demonstrate. In a raised position, the guide part 22 is located above a lower front edge 27 of the plate-shaped sliding element 4. Since the mounting element 15 is also arranged flush with or above the lower front edge 27 of the sliding element 4, the sliding element 4 can be placed on the floor 28 without damaging the guide member 22 or the floor.

In the 7A until 7E another exemplary embodiment of a guide part 33 for a rear sliding element 3 is shown. The guide part 33 comprises a displaceable holding section, on which two upper webs 34 and a lower web 35 form a receptacle 36 into which a head section 92 of the guide profile 9 can be inserted. The webs 34 and 35 are offset in the longitudinal direction of the guide profile 9 . The guide part 33 is held displaceably in the vertical direction along a mounting element 30, which is designed as a narrow strip. The mounting element 30 comprises two openings 31 so that it can be fixed to a sliding element 3 using fastening means such as screws. The mounting element 30 also has guide webs 32 on opposite longitudinal sides, which are gripped behind by a hook-shaped section 37 on the guide part 33 . The hook-shaped sections 37 ensure that the guide part 33 is mounted on the mounting element 30 so that it can only be displaced in the vertical direction, but that no movement in the horizontal direction is permitted.

In the 8A until 8E a guide part 40 for a front sliding element 4 is shown in detail. The mounting element 30 corresponds to the mounting element 30 of the previous exemplary embodiment. The guide part 40 , on the other hand, is angled and includes a displaceable holding section 41 which is held on the mounting element 30 . At an angle to this, in particular at right angles, is a holding section 42 provided on which two upper webs 34 and a lower web 35 are formed, which form a receptacle 36 between them to accommodate a head portion 92 of the guide profile 9 can. The webs 34 and 35 are offset in the longitudinal direction of the guide profile 9, but can still be locked on the head section 92 for guidance. The guide part 40 also has hook-shaped sections 37 which engage behind the guide webs 32 .

In 9 a further exemplary embodiment of a guide device is shown, in which a guide profile 9 is fixed to a base 11 of a furniture body 2 . The guide profile 9 again has two protruding webs 90 and 91, on each of which a thickened head section 92 is formed, which can be rhombic or square in cross section. Guide parts 50 and 55 are guided on the thickened head section 92 in order to guide the sliding elements 3 and 4 in a horizontal direction transverse to the longitudinal direction of the guide profile 9 .

In 10 the guide part 50 for the rear sliding element 3 is shown. The guide part 50 is movably held on a mounting element 15, as has been explained in the preceding exemplary embodiments. The guide part 50 also includes two upper webs 51 and a lower web 52 which enclose the head section 92 of the guide profile 9 . On each web 51 and 52 two spaced tabs are issued in the vertical direction, between which guide rollers 53 are rotatably mounted in bearings 54. are penetrated. The guide rollers 53 are rotatably mounted with bearings 54 on these tabs. The guide rollers 53 pass through the webs 51 and 52 through recesses and can thus roll on the head section 92 of the guide profile 9, so that smooth guidance of the guide part 50 is ensured.

In a similar way, the guide part 50 is also provided with webs 51 and 52, on each of which a guide roller 53 is rotatably mounted. The guide member 50 is angularly formed with a vertical holding portion 55 and a horizontal portion 56, with a vertical holding portion 55 being slidably held on the mounting member 15. As shown in FIG. By using guide rollers 53, the frictional forces when moving the sliding elements 3 and 4 can be reduced.

In 12 shows a modified embodiment in which a guide profile 9 is fixed to a base 11 of the furniture body 2, the protruding webs 90 and 91 no longer being linear but angled and having a thickened head section 92 extending in the vertical direction at the end. A guide part 60 for the rear sliding element 3 and a guide part 65 for the front sliding element 4 are guided on this head section 92 .

As the 13 and 14 show, the guide part 60 has guide webs 61 which engage behind the guide webs 18 on the mounting element 15 in order to produce vertical displaceability on the mounting element 15 . The guide part 60 also has a holder 62 for two horizontally arranged guide rollers 63 and 64, which grip the head section 92 on the guide profile 9 and roll on the surface of the head sections 92, with the guide rollers 63 and 64 being rotatably mounted about a vertical axis.

In a similar manner, a receptacle with two guide rollers 63 and 64 is provided on the guide part 65, with the guide part 65 being held on the mounting element 15 so that it can be displaced in the vertical direction.

In the 15A until 15E Another embodiment of a guide device is shown, in which a mounting element 70 can be fixed to the rear of a sliding element 3 or 4, with a guide part 71 no longer being displaceable, but being mounted pivotably on the mounting element 70 . For this purpose, an opening 73 is provided on the mounting element 70 to form an axis which engages in an opening 72 on the guide part 71 . The guide part 71 is designed as a lever and has an essentially U-shaped sliding element 74 on which two spreading webs 75 are formed and which can be latched on a head section 92 of the guide profile 9 .

The mounting element 70 is essentially plate-shaped and includes a recess 76 which has an upper stop 77 and a lower stop 78 . The guide part 71 is at least partially inserted into the recess 76 and can be pivoted between the two stops 77 and 78 about the axis 80 formed at the openings 72 and 73 . The guide part 71 is also plate-shaped and includes steps, so that individual sections are arranged in different planes. As a result, an end section with the opening 72 can be inserted into an outer section of the mounting element 70 . In the area of the recess 76, the mounting element 70 comprises a curved guide strip 79, which is gripped behind by an edge of the guide part 71 in the mounted position. As a result, the guide part 71 is secured against being pulled out in the axial direction of the axle 80 formed at the openings 72 and 73 . In the area of the axis 80, the guide part 71 is covered by a part of the mounting element 70, and on the opposite side, the guide part 71 engages behind the guide bar 79.

the 16A and 16C show that the guide part 71 is designed as a lever and has an opening 72 for the formation of an axle 80 on one side and the U-shaped sliding element 74 on the opposite side. The sliding element 74 protrudes in the axial direction of the pivot axis 80 , the distance in the axial direction of the pivot axis determining whether the guide part 71 can be used for a front sliding element 4 or a rear sliding element 3 .

According to the invention, the maximum movement of the guide part is limited by an upper and a lower stop.

Reference List

1

furniture

2

furniture body

3

sliding element

4

sliding element

5.5"

running rail

6

running part

7

topsoil

8th

floor

9

leadership profile

10

guide device

11

base

12

guide part

13

recording

14

web

15

mounting element

16

strip

17

recording

18

guide bar

19

connection section

20

opening

22

guide part

23

recording

24

web

25

holding section

26

holding section

27

front edge

28

floor

30

mounting element

31

opening

32

guide bar

33

guide part

34

web

35

web

35'

hook

36

recording

37

section

40

guide part

41

holding section

42

holding section

45

guide part

46

hook

47

roller

48

running part

50

guide part

51

web

52

web

53

leadership role

54

warehouse

55

vertical holding section

56

horizontal section

60

guide part

61

guide bar

62

holder

63

leadership role

64

leadership role

65

guide part

70

mounting element

71

guide part

72

opening

73

opening

74

sliding element

75

web

76

recess

77

attack

78

attack

79

guide bar

80

axis

90

web

91

web

92

head section

93

detent

94

leading edge

QUOTES INCLUDED IN DESCRIPTION

This list of the 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

• DE 102013111482 A1 [0002]
• DE 2740374 A1 [0003]
• DE 102014114339 A1 [0004]

Claims (10)

Furniture (1) with at least one sliding element (3, 4) that can be moved on a running profile (5) and a guide device (10) with a guide profile along which at least one guide part (71) is guided, which is on the sliding element (3, 4) is held, the guide profile (9) guiding the guide part (71) in a horizontal direction perpendicular to the longitudinal direction of the guide profile (9), characterized in that the guide part (71) is fixed to a mounting element ( 70) is held movably in a vertical direction and is pivotally mounted, the maximum movement of the guide part (71) being limited by an upper and a lower stop. furniture after claim 1 , characterized in that the guide part (71) on the guide profile (9) can be locked in a joining direction transverse to the longitudinal extent of the sliding element (3, 4). furniture after claim 1 or 2 , characterized in that guide rails (79) are provided on the mounting element (70) and the guide part (71) engages behind them. furniture after claim 3 , characterized in that the mounting element (70) in the region of a recess (76) comprises a curved guide strip (79), which is engaged by an edge of the guide part (71) in the mounted position. Furniture according to one of the preceding claims, characterized in that the mounting element (70) is essentially plate-shaped and comprises a recess (76) which has an upper stop (77) and a lower stop (78). Furniture according to one of the preceding claims, characterized in that the guide part (71) has at least one sliding element (74) which encompasses a head section (92) on a web (90, 91) of the guide profile (9). Furniture according to one of the preceding claims, characterized in that one or more rollers (53, 63) are provided on the guide part (50, 55, 60, 65) and roll on the guide profile (9). Furniture according to one of the preceding claims, characterized in that when the sliding element (3, 4) is set down on a floor (28) in the vertical direction the guide part (71) extends to above a lower end edge (27) of the sliding element (3, 4 ) is movable. Furniture according to one of the preceding claims, characterized in that the guide part (71) is constructed in several parts, in particular in two parts. Furniture according to one of the preceding claims, characterized in that an activator which can be brought into engagement with a damper, a self-closing mechanism or a stop is provided on the guide part.

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