JP6600091B2 - Plastic slider - Google Patents

Description

  The present invention relates to a metal thin plate of a variable-length protective cover or a plastic slider for a frame component. The plastic slider includes fixing means capable of fixing the plastic slider to a metal thin plate or frame part, and at least one sliding surface configured to abut against a stationary sliding rail.

  Such a protective cover is composed of a large number of thin plates and is used, for example, in a machine tool to shield a work space. A large number of these thin plates are connected using a metal frame component by a bellows (bellows) or by connecting the overlapping thin plates with an elastic coupling element. Here, the thin plate made of sheet metal or plastic is oriented substantially perpendicular to the slide rail that supports the thin plate during movement. In order to avoid the sheet coming into direct contact with the slide rail, it is known and common to use plastic sliders made of suitable materials, such as also used in plastic bearing bushes. In general, the plastic slider is fixed to a separate PVC bridge and then riveted to a thin plate or metal frame part. Because of such a fixing method, it takes a relatively long time and replacement of the slider takes a very long time.

  DE 20 2012 008 922 U1 discloses a so-called guide element, in particular a guide element designed to cooperate with a guide surface through which the weight of a thin plate or curtain is not transmitted. The disclosed plastic guide element is clipped directly into the hole in the thin plate, and this fixing is reinforced by the receiving legs gripping the edge of the thin plate. Such a configuration of the plastic slider has been shown not to be sufficient at high loads.

  An object of the present invention is to realize a plastic slider that is widely suitable for supporting and guiding a protective cover and that does not require labor to manufacture.

  According to the invention, this problem is solved by the fact that a plastic slider of the kind described at the beginning comprises two members which can be fixed to each other by fixing means with a thin plate in between.

  It is shown that fixing the plastic slider to the thin plate or the metal frame part can be realized particularly reliably by using two members with a fixing means having a suitable and general configuration. It was done. In this case, it has been shown that it is also possible to accurately arrange the sliding surface with respect to the thin plate. These fixing means are configured to penetrate through the holes of the thin plate so that positioning can be realized very easily. At the same time, problems that occur when the plastic slider is directly connected to a thin plate, which is usually made very thin, are avoided. This is because these two members are mainly stabilized with respect to each other and not with respect to the thin plate. Therefore, in particular, since the gap in the vertical direction with respect to the thin plate is effectively avoided, even when a high rated load is applied to the sliding surface, it is possible to fix without tilting.

  Particularly preferred is an embodiment in which the fixing means comprise at least one fastening element and at least one positioning element. By forming them separately, it is possible to optimize the fastening element with respect to the fixing of the two members, while the positioning element cooperates with the hole in the thin plate, thereby reducing the manufacturing effort. It is possible to fix the plastic slider to be attached to the thin plate accurately and substantially without gaps while suppressing.

  In addition to the method of riveting or welding both members of the plastic slider, at least one fastening element is formed as a fastening post formed in one member of the plastic slider and fitted into one fastening hole of the other member. The embodiment formed is particularly preferred. Depending on the case, depending on the load and the configuration of the positioning element provided, two, three or more fastening elements may be provided accordingly.

  In an exemplary embodiment of the fastening column, the fastening column is provided with a slit in the center and at least one radial protrusion at its free end, the radial protrusion being fastened to the other member. It locks behind the edge of the hole.

  In a preferred development of the invention, the fixing means comprise at least one positioning element arranged at a predetermined position with respect to the sliding surface. Such a positioning element may be a positioning column that fits into a positioning hole of a corresponding cross section of a thin plate, for example. The circular holes can be formed very precisely in the thin plate, while the positioning posts are easy to manufacture. In this way, accurate positioning of the slider with respect to the thin plate can be realized very easily. It is also possible to select the cross-sectional shape of the positioning column so that the positioning in a plurality of parallel directions with respect to the plane of the thin plate can be determined with only one positioning column. However, for example, two positioning pillars having a circular cross section may be selected.

  In a particularly preferred development of the invention, the positioning column is adapted to fit into a hole formed corresponding to the other member of the plastic slider. In this way, the second member is also accurately positioned. It is particularly advantageous if this member is also provided with at least one further sliding surface. The further sliding surface can improve the movement characteristics and noise during movement, and can extend the service life.

  One member of the plastic slider is provided with all the protrusions of the fixing means configured to engage with the hole in the thin plate, and the other member is configured to cooperate with the protrusion. The embodiment in which the corresponding holes are formed is preferred. With this configuration, it is not necessary to align these members when attaching both members to the thin plate. Further, it is not necessary to match the position with respect to the thin plate.

  A further subject of the present invention is a thin plate for a variable-length protective cover comprising one or more plastic sliders of the type described above configured to abut against a slide rail. Here, the thin plate is provided with a hole through which the fixing means of the plastic slider passes. Preferably, the thin plate has a hole that exactly fits the cross-section of the positioning element and a hole through which another connecting element passes. Preferably, the frame component that supports the thin plate may include the slider according to the present invention.

  A further subject of the present invention is a protective curtain comprising a number of sheets of the kind described above which are elastically interconnected by bellows or other flexible elements.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The perspective view which shows the 1st member of a plastic slider The perspective view which shows the 2nd member of a plastic slider The figure which shows a part of thin plate for variable length protection curtains The figure which installed the 1st member of the plastic slider in the thin board of FIG. Figure with the plastic slider fully attached to the thin plate of Figure 3 The figure which shows the other Example of the 1st member of a plastic slider. The figure which shows the other Example of the 1st member of a plastic slider. The figure which shows the further another Example of the member of a plastic slider.

  FIG. 1 shows a first member 10 of a plastic slider 12 (see FIG. 5) having a substantially L-shaped basic shape. The first member 10 of the plastic slider has a plate shape and defines an L-shaped sliding surface 14. The sliding surface 14 is used, for example, for shielding a work space in a machine tool, and abuts against a fixed sliding rail for a variable-length protective curtain. The first member 10 is preferably made of plastic and has a fixing means 16 formed integrally with a plate-like base 18 on one side thereof. The fixing means 16 is classified into a fastening element 20 and a positioning element 22, and two of these are provided. The fastening element 20 is formed with a slit 24 in the center, and has a radial protrusion 26 at the protruding end. The slits 24 allow these ends of the fastening element 20 to approach each other. This will be described in more detail later.

  The positioning element 22 is formed as a short columnar protrusion and has a chamfered edge 28.

  A second member 30 for forming the plastic slider 12 is shown in FIG. This also consists of an L-shaped substrate 32 and has an L-shaped sliding surface 34. Corresponding to the fixing means 16 of the first member 10, the second member 30 has a fixing hole 36 aligned and aligned. Among these, the fastening hole 38 is positioned so as to be aligned with the fastening element 20, and the positioning hole 40 is positioned so as to be aligned with the positioning element 22. The diameter of the fastening hole 38 is smaller than the diameter of the radial protrusion 26 of the fastening element 20, and these are locked behind the fastening hole 38. The positioning hole 40 has a diameter adapted to the positioning element 22, and the second member 30 is positioned with respect to the first member 10 when engaged.

  Although both the members of the plastic slider 12 have been described, fixing the plastic slider 12 to the corresponding thin plate will be described with reference to FIGS. FIG. 3 shows a thin plate 50 used to construct a variable length protective curtain. The thin plate 50 has an L-shaped cross section, and includes a fixed leg portion 52 and a leg portion that functions as a blind 54. The leg portion 54 is formed in parallel with a large number of thin plates arranged in the front and rear, and the length can be changed by changing the interval between the fixed leg portions 52. In the thin plate embodiment shown in FIGS. 3-5, the thin plate 50 is supported on a slide rail (not shown) that projects into the recess 56. Since it is not desirable that the metal contact portion of the thin plate 50 contacts the slide rail, the plastic slider 12 having the constituent members as shown in FIGS. 1 and 2 is used.

  A holding hole 58 is provided in the fixed leg 52 of the thin plate 50, preferably on the side of the recess 56. These holes are classified into a through hole 60 for the fastening element 20 and a guide hole 62 for the positioning element 22. The diameter of the through hole 60 is selected to be larger than the outer diameter of the radial protrusion 26, but may be configured to be slightly smaller depending on the case. Since the diameter of the guide hole 62 is adapted to the diameter of the positioning element 22, the first member 10 is oriented with respect to the thin plate 50 as shown in FIG.

  As is apparent from the figure, the sliding surface 14 protrudes beyond the edge of the recess 56, so that the slide rail moving through the recess 56 always contacts only the plastic slider 12. The leg portion 54 that forms an angle with respect to the fixed leg portion 52 does not come into contact with the slide rail because of its structure.

  For a more complete fixation, as shown in FIG. 5, the second member is attached to the first member, i.e., a fixed leg 52 is disposed between both members 10 and 30 of the plastic slider 12. The At this time, the radial protrusion 26 of the fastening element 20 is locked behind the fastening hole 38 of the second member, and the positioning hole 40 cooperates with the positioning element 22 to slide the two members 10, 30. The moving surfaces 14 and 34 are configured to be aligned and aligned. Basically, an embodiment in which only one of the two members forms the sliding surface is possible, but depending on the application, it may be desirable to make the sliding surface correspondingly larger.

  Depending on the embodiment of the thin plate and the protective curtain formed thereby, the plastic slider may have a completely different basic shape from the plastic slider shown in FIGS. In a simple example, it is possible to provide a plastic slider 100 having a substantially rectangular substrate 102 as shown in FIG. FIG. 6 shows only the first member 112 of the plastic slider 100 that includes two fastening elements 120 and two positioning elements 122. These elements themselves correspond to the fastening elements and the positioning elements of the above-described embodiment. The second member is correspondingly configured, i.e., having a suitably configured fastening hole and positioning hole, allowing the first member 112 to be accurately aligned and secured to the thin plate. . The second member corresponds to the first member with respect to its basic shape, but when the sliding surface 114 is formed only on the first member 112, this member has a smaller area. Also good.

  A further embodiment of a first member 212 of a plastic slider 200 is shown in FIG. Again, two fastening elements 220 and two positioning elements 222 are provided. In this case, a cylindrical sliding surface 214 is formed at the center of the first member 212. The sliding surface 214 is suitable for cooperation with a cylindrical sliding rail.

  The counterpart member suitable for the first member 212 of the plastic slider 200 shown in FIG. 7 is also formed in a corresponding shape and may be provided with a second sliding surface, but is not necessarily provided. There is no need to be.

  Finally, FIG. 8 shows a first member 312 of the plastic slider 300 with a U-shaped sliding surface 314, which is a further embodiment. In order to improve the stability, four fastening elements 320 are provided in this embodiment. These fastening elements 320 are accurately positioned by the two positioning elements 322 and are fixed to the second member. The second member may also have a basic shape corresponding to the first member 312.

  As will be apparent from the various embodiments of the plastic slider 12, 100, 200, 300, the configuration is determined depending on what shape of the slide rail the slider needs to cooperate with. Thereafter, the fastening element and the positioning element are designed according to the desired demand. Here, it is also conceivable that in particular the fastening elements have other cross-sectional shapes that engage and cooperate with corresponding holes in other members. For the positioning element, it is preferable to provide a pair of cylindrical columns. This is because these cylindrical columns can cooperate with a simple punch hole formed in a thin plate. However, other cross-sectional shapes may be used, and in some cases, only one guide element may be sufficient to fix the plastic slider in place on the thin plate 50.

Claims (12)

A plastic slider for a metal thin plate (50) of a variable length protective cover,
Securable fastening means the plastic slider in a metal sheet (50) and (16),
A plastic slider (12; 100; 200; 300) comprising: at least one sliding surface (14; 114; 214; 314) configured to abut against a stationary sliding rail;
The plastic slider is provided with two members (10, 30; 112; 212; 312) that can be fixed to each other by the fixing means with the thin plate (50) being sandwiched therebetween. The fixing means (16)
At least one fastening element (20; 120; 220; 320);
The plastic slider according to claim 1, characterized in that it comprises at least one positioning element (22; 122; 222; 322).   The at least one fastening element (20; 120; 220; 320) is provided on one member (10; 112; 212; 312) and is engaged with a fastening hole (38) of the other member (30). The plastic slider according to claim 2, wherein the plastic slider is formed as follows. The at least one fastening column (20) includes a slit (24) in the center and a radial protrusion (26) at a free end thereof,
The plastic slider according to claim 3, wherein the radial protrusion (26) is locked behind the edge of the fastening hole (38) of the other member (30).   The fixing means comprises at least one positioning element (22; 122; 222; 322) arranged in a predetermined position relative to the sliding surface (14; 114; 214; 314). The plastic slider of any one of Claims 1-4.   6. Plastic slider according to claim 5, characterized in that the positioning element (22; 122; 222; 322) is formed as a positioning post. The plastic according to claim 6 , characterized in that the positioning column (22; 122; 222; 322) fits into a positioning hole (40) formed corresponding to the other member (30). Slider. One member (10; 112; 212; 312) is provided with all the protrusions of the fixing means (16) configured to penetrate the hole (58) of the metal thin plate (50),
The other member (30) is formed with corresponding holes (38, 40) configured to cooperate with the protrusions (16, 20, 22). 8. The plastic slider according to any one of 7 above.   9. The plastic slider (12) according to any one of claims 1 to 8, characterized in that both members (10, 30) of the plastic slider (12) each have at least one sliding surface (14; 34). The described plastic slider. 10. A plastic slider (12; 100, 200 ) according to any one of claims 1 to 9, wherein the plastic slider (12; 100, 200 ) is a thin plate for a variable length protective curtain and is configured to abut against a sliding rail. 300),
The thin plate is provided with holes (60, 62) through which the fixing means (16) of the plastic slider (12; 100; 200; 300) passes.   11. Thin plate according to claim 10, characterized in that it comprises a hole (62) that fits precisely in the cross-section of the positioning element (22) and a fastening hole (60) through which the fastening element (20) can pass.   12. Protective curtain comprising a number of sheets (50) according to claim 10 or 11 connected to each other by flexible elements.

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