• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Tensioning device (1) provided for suspending a banner (20) under tension, comprising a cable system (2) having a first cable (6a) the first end (7a) of which is connectable to a banner (20), the tensioning device ( 1) comprises a displacement mechanism with which the first cable (6a) can be displaced, so that the first cable (6a) can be put under tension with the aid of the displacement mechanism.
    公开号:BE1023061B1
    申请号:E2015/5290
    申请日:2015-05-07
    公开日:2016-11-16
    发明作者:Nic GHEERAERT
    申请人:Letterop Bvba；
    IPC主号:
    专利说明:

    TENSIONER FOR A BANIER
    This invention relates on the one hand to a tensioning device provided for suspending a banner under tension, comprising a cable system with • a first cable with two ends, the first end of which can be connected to a banner, • a second cable with two ends, the first end of which can be connected with a banner and being provided to extend at a distance from the first end of the first cable, the tensioning device comprising a displacement mechanism with which the first and the second cable can be moved, and wherein the first and the second cable can be brought under tension by displacement of the first and the second cable, respectively, by means of the displacement mechanism.
    This invention, on the other hand, relates to a suspension device with which a banner can be suspended under tension, comprising two support structures which are provided for being mounted at a distance from each other on a wall and which can each be connected to one and the same banner to suspend the banner substantially between the two support structures. wherein at least one support structure comprises a tensioning device provided for suspending the banner under tension, wherein the tensioning device comprises a cable system with at least a first cable with two ends, the first end of the first cable of which can be connected to the banner.
    This invention also relates to an assembly of a banner and such a suspension device.
    Banners, such as facade banners, are attached to a wall with the aid of suspension devices. These banners are usually tightened so that the view and legibility are good. Because they are tight, the wind will have little or no influence on the view and readability. Such banners are, for example, attached to facades of buildings. They can then be fixed in such a way that they extend parallel to the facade surface or that they extend perpendicular to the facade surface.
    The existing suspension devices comprise two support structures that are attached to a wall at a distance from each other. The banner is then attached to both bearing structures and tightened tightly between these bearing structures. A frequently used embodiment is that in which both bearing structures are provided with a movable and a support, wherein the support is attached to the wall and the movable is connected to the support. A banner is attached here to both movable bars. By displacing these bars with respect to their respective supports, it is possible to tighten the banner tightly between the bearing structures during the placement of the banner. However, it is not easy to move these bars with respect to their supports, so that tightening the banner takes a lot of time.
    It is therefore an object of the invention to manufacture a tensioning device and a suspension device with such a tensioning device, with which a banner can be brought under tension more easily.
    This object is achieved by providing a tensioning device as described in the first paragraph wherein the cable system comprises compensating means, which are provided to accommodate voltage changes on the first and the second cable in use, so as to cover the first and the second cable. tension, • the displacement mechanism comprises a tensioning means connected to the cable system, which is arranged movably, and wherein movement of the tensioning means causes displacement of the first and the second cable, • the cable system comprises a central cable connected to the tensioning means and with its two cable ends connected to a said compensating means, said compensating means being respectively connected to the second ends of the first and the second cable.
    By working with a cable which is provided to be connected directly or indirectly to a banner and which is simple to move with the aid of a displacement mechanism, it is easy and quick to clamp a banner connected to the cable by moving the cable. The first end of the first cable can be directly connected to a banner. This is for instance provided by providing an opening in the banner in which the end of the first cable can be arranged. However, the connection can also be indirect. For example, the first end of the cable can be connected to a bar or a profile to which the banner is attached.
    The cable system comprises one or more compensating means, which are provided for absorbing voltage changes on the first cable in use, so as to keep the first cable under tension. When a banner is to be attached to the tensioning device and the banner is brought under tension by moving the first cable, the banner will be taut for a time. However, banners are exposed to weather conditions such as UV light, changing temperatures, rain, etc. As a result, the banner may stretch somewhat and the tension on the first cable may decrease over time. If compensating means were then not provided to compensate for this change in voltage on the first cable in use, this would mean that the banner would hang limply after some time. In order to then re-energize the first cable, the first cable would have to be re-energized with the aid of the displacement mechanism. Since banners are often hung up to a certain height, this means in practice that you have to lift a ladder or platform, so this takes a lot of time.
    However, by providing compensating means that absorb changes in tension on the first cable in use, one avoids having to move the first cable back using the displacement mechanism to tighten the first cable tightly. Here, the compensating means will ensure that the first cable remains tightly tensioned, by absorbing the voltage changes, so that the banner, even if it stretches a little in use, always remains tightly tensioned.
    The displacement mechanism comprises a tensioning means connected to the cable system, which is arranged so as to be movable, and wherein movement of the tensioning means causes displacement of the first cable. This tensioning means can then, for example, be connected directly or indirectly to the second end of the first cable. Movement of the first cable is here simply triggered by movement of another component connected to the cable system, namely the tensioning means. Here, therefore, only one tensioning means must be moved to tension the first cable tightly, so that the tensioning of a banner connected to the tensioning device can proceed simply and smoothly.
    At least one said compensating means extends between said first end and said tensioning means. The first cable is then tightly tensioned here, during the attachment of a banner to the tensioning device, by said tensioning means and remains tightly tensioned in use by at least one said compensating means.
    The tensioning device comprises a second cable with two ends, the first end of which is connectable to a banner and is provided for extending at a distance from the first end of the first cable and wherein the second cable is movable with the aid of the displacement mechanism and wherein the second cable can be brought under tension by displacement of the second cable by means of the displacement mechanism. By working with a second cable, which is directly or indirectly connected to the banner, it is easier to hang a banner in the desired position. When the banner is placed in a position that allows it to catch wind, two cables, which are connected to the banner at a distance from each other, will also be better able to prevent the wind from turning / moving the banner. Preferably, at the level of said first ends, the first and the second cable extend substantially parallel to each other.
    Furthermore, both cables are connected to a said compensating means such as a spring. For example, the second ends of the first cable and the second cable can be connected to a compensating means. Changes in voltage on both cables in use can be absorbed as a result of which both cables are always kept tight. If the banner then stretches a little during use, the banner will always be kept tight. An additional advantage here is that the banner is tightened in two places. If then, for example, a portion of the banner extends more than another portion of the banner, for example because the banner is only partially suspended in the sun, then a cable can be provided on both sections to tighten both sections tightly, so that the entire banner well tensioned. These two said compensating means will also be able to hold the banner in a desired position, even if the banner is not attached so well to the tensioning device.
    Both cables can be moved using the tensioning device. Here one has to do only one action to tighten the banner. Preferably, if a said Allen bolt is present with which the tensioning means can be moved, both cables can be moved by turning this Allen bolt. Here one has to do only one action to tighten the banner.
    The cable system comprises a central cable which is connected to the tensioning means and is connected with its two cable ends to a said compensating means, said compensating means being respectively connected to the second ends of the first and the second cable. Here, a properly functioning tensioning device is obtained in a simple manner, namely by using only three cables. There may also be additional safety cables. Of course, alternative embodiments with multiple cables are also possible. By moving the tensioning means, the central cable will also move. Since the central cable is connected to both the first cable and the second cable via said compensating means, movement of the central cable will also cause movement of the first cable and the second cable. Here, it is then simple to move a banner connected to said first ends of the first and second cable by moving the tensioning means. Furthermore, preferably the cable system is also substantially symmetrical with respect to the tensioning means, so that the first and the second cable are tensioned equally when the tensioning means are moved.
    Furthermore, the one or more compensating means preferably comprise one or more springs. A said spring can for instance be connected to the first cable, for instance by being connected to the second end of the first cable. Voltage changes on the first cable can then be absorbed by this spring. The spring can for instance be a tension spring. During the attachment of the banner to the tensioning device and during the tensioning of the banner, i.e. the tightening of the first cable, the tension spring will end up in a more extended position. This tension spring will want to return to a less extended position. However, as long as the banner does not stretch, the tension spring will not be able to. If, in use, the banner stretches somewhat, the tension spring will then move back to a less extended position, so that the cable and therefore the banner will always remain taut. Tension springs are easily available. Tension springs can also be obtained in many sizes and strengths, so that it is easy to find a suitable tension spring for the tensioning device.
    The cable system preferably also comprises one or more safety cables and at least one of the one or more compensating means is provided with a said safety cable. When a said compensating means is connected, for example, to the first cable, for example, to the second end of the first cable, in use, this connection between said said compensating means and the first cable can be broken, for example by a break. In such circumstances, the cable is not intended to peel off / shoot away due to the sudden change in voltage. To prevent this, a safety cable is connected to the first cable to prevent the first cable and the associated banner from shooting far and quickly. For example, a tension spring can be connected to the second end of the first cable, with a safety cable then also being connected to that second end for safety.
    Furthermore, the displacement mechanism preferably comprises a rotatable Allen screw with which the tensioning means can be moved. With the help of a simple tool, such as an Allen key, this Allen screw can be turned. Tightening a banner that is connected to the tensioning device is therefore very simple. One only has to turn the socket screw here with the help of an Allen key.
    The displacement mechanism preferably comprises one or more cable guides for guiding said cables. With the help of cable guides you can guide a cable along a desired route. This range can be chosen so that the cable only moves over a small volume. As a result, the tensioning device can be of compact design and still be able to create sufficient tension on a banner that is connected to the tensioning device.
    Further preferably, the one or more cable guides comprise one or more rotatable guide wheels. These guide wheels then comprise, for example, a groove on their surface in which a said cable can be placed partially. By working with rotatable guide wheels, the friction between said cable and the guide wheel is low when the cable is moved, so that these guide wheels do not interfere with the tensioning of a banner connected to the tensioning device. Due to the low friction, the guide wheels also provide little or no wear for the cable.
    This object is also achieved by providing a suspension device with which a banner can be suspended under tension, comprising two support structures which are provided for being attached to a wall at a distance from each other and which can each be connected to the same banner around the banner substantially between the suspend two support structures, at least one support structure comprising a tensioning device, provided to suspend the banner under tension, the tensioning device comprising a cable system with at least a first cable with two ends, the first end of the first cable being connectable to the banner, wherein the tensioning device comprises a displacement mechanism with which the first cable can be displaced, and wherein the first cable can be brought under tension by displacement of the first cable by means of the displacement mechanism.
    It is easy to tension a banner with the aid of two support structures, at least one of which has such a tensioning device. The other bearing structure can for instance be a simple bar to which the banner can be attached or a screw or nail with which the banner can be attached to a wall. By working with a cable which is provided to be connected directly or indirectly to a banner, wherein this cable can easily be moved with the aid of a displacement mechanism, it is simple and quick to clamp the banner between the supporting structures by moving the cable.
    The tensioning device is preferably a tensioning device as described above. In a very preferred embodiment, both bearing structures comprise a tensioning device as described above. A banner connected to the suspension device is then pulled tightly at the level of both bearing structures, whereby the banner can obtain a very tight view. It is also better to compensate for errors in placement, for example when both bearing structures are fixed too close or too far apart or when the size of the banner deviates somewhat. When said compensating means are provided, any elongation of the banner can also be better absorbed with two tensioning devices.
    Preferably, said at least one support structure comprises a fastening profile connectable to said first end of the first cable, the fastening profile being provided to be connected to a banner. By not attaching the first end of the first cable directly to a banner, but attaching the banner to the said end via a fixing profile, it is better to tighten the entire banner. It is then also possible to connect the banner to the mounting profile on the ground floor and then connect the mounting profile to the said first end on the spot where the banner is to be attached to the wall.
    Further preferably, the fixing profile comprises a slot in which the banner can be slid. Sliding a banner into a slot is easy. The banner can optionally be provided with a thickening or a profile at the height of its edge, which is provided for being pushed into the slot, so that the banner does not come loose from the slot in use.
    This object is also achieved by providing an assembly of a banner and a suspension device, the suspension device being a suspension device as described above.
    This invention will now be further elucidated on the basis of the following detailed description of a preferred embodiment of a tensioning device, a suspension device and an assembly according to the present invention. The purpose of this description is only to provide clarifying examples and to indicate further advantages and details thereof, and thus can in no way be interpreted as a limitation of the scope of the invention or of the patent rights claimed in the claims.
    In this detailed description reference is made to the accompanying drawings by reference numerals, in which - figure 1 represents a perspective representation of a support structure of a suspension device according to the invention; figure 2 represents a perspective representation of a tensioning device that is present in the support structure shown in figure 1; figure 3 represents a cut-away perspective of the support structure shown in figure 1; figure 4 represents a partly cut-away perspective of the tensioning device shown in figure 2; figure 5 represents a perspective representation of an assembly comprising a suspension device and a banner according to the invention.
    Figure 5 shows a possible embodiment of an assembly of a banner (20) and a suspension device according to the invention. Figures 1 to 4 show specific parts of this assembly in more detail.
    The suspension device consists of two identical supporting structures (10), which are provided for being attached to a wall, such as a facade of a building, at a distance from each other. They are designed to be attached to the façade in such a way that they mirror each other. The top of the bottom support structure (10) here then corresponds to the bottom of the top support structure (10) and vice versa.
    As visible in figures 1 and 3, each support structure (10) consists of a support plate (19), an elongated hollow support profile (21) with a bottle-shaped cross-section, a tensioning device (1) and a fixing profile (8). In figures 1 to 4 the upper support structure (10) or parts of the upper support structure (10) are always visible. The operation of the support structures (10) is therefore explained on the basis of the upper support structure (10). The operation of the lower support structure (10) is the same but in mirror image.
    As shown in Figures 1 and 3, the support plate (19) is connected to the support profile (21), the tensioning device (1) is essentially arranged inside the support profile (21) and the tensioning device (1) is connected to the mounting profile (8). The support structures (10) are each connected to the facade by screwing the support plate (19) to the facade.
    Said tensioning device (1) comprises a cable system (2), a displacement mechanism and a carrier (11) with an end plate (13).
    Each cable system (2) consists of a central cable (6b) with two ends, a first cable (6a) with two ends, a second cable (6c) with two ends, two tension springs (4) and two safety cables (5). The central cable (6b) is connected at both ends to a respective tension spring (4) and a respective safety cable (5). Furthermore, each tension spring (4) and each safety cable (5) is connected to the second end of the first and the second cable (6a, 6c), respectively. The reason that the mentioned ends of the cables (6a, 6b, 6c) are not only mutually connected via the tension springs (4), but are also connected to each other using a safety cable (5), is that a connection can come loose between a said end of a said cable (6a, 6b, 6c) and a said tension spring (4). Should this happen, a safety cable (5) mentioned will ensure that the respective cables (6a, 6b, 6c) do not come apart. This is important since the banner (20) is indirectly connected to the cable system (2) and it is of course undesirable for a banner (20) to come loose in use.
    With the aid of the displacement mechanism, the cable system (2) is arranged so as to be movable relative to the support profile (21) in which it is mainly arranged. The displacement mechanism comprises a central casing (3) in which a plurality of guide wheels (16) are arranged and in which the central cable (6b) largely extends and is guided over said guide wheels (16). Further, viewed in the longitudinal direction of the support profile (21), the displacement mechanism comprises two extreme guide wheels (16) on either side, which guide the first cable (6a) and the second cable (6c) respectively. The two springs (4) each extend between a respective extreme guide wheel (16) and the casing (3).
    The dimensions of the springs (4) are designed in such a way that they cannot move beyond the extreme guide wheels (16) and cannot enter the casing (3). This limits the freedom of movement of the cable system (2).
    The cable system (2) can move as the displacement mechanism has a tensioning means (15) connected to the central cable (6b). This tensioning means (15) is movably arranged with respect to the casing (3) with the aid of a rotatable Allen screw (14). By turning the socket screw (14), the central cable (6b) moves, so that the first cable (6a) and the second cable (6c) also move. The usefulness of moving the first cable (6a) and the second cable (6c) is further explained below.
    Furthermore, the displacement mechanism is mounted on the carrier (11) with the end plate (13). This carrier (11) can be slidably mounted in the carrier profile (21). This is visible in figure 3. As visible in figure 3, the carrier (11) is slidable between the top of the carrier profile (21) and mounting rails (12) of the carrier profile (21). To ensure that the tensioning device (1) cannot come loose from the support profile (21), the support (11) is screwed to the top of the support profile (21). The bottom of the support profile (21) is (partially) open so that the first ends (7a, 7c) of the first and the second cable (6a, 6c) can extend beyond the support profile (21). The bottle-shaped end plate (13) covers the support profile (21).
    As visible in Figure 1, a portion of the first cable (6a) and a portion of the second cable (6c) will always extend beyond the support profile (21) so that the first ends (7a, 7c) of the first and the second cable (6a, 6c) extend beyond the support profile (21) and can be connected to the fixing profile (8).
    The fixing profile (8) is provided with a slot in which the banner (20) can be fitted. By then sliding the banner (20) into the slot, the banner (20) is connected to the fixing profile (8) and thus to the support structure (10). Since the fixing profile (8) is connected to the tensioning device (1) with the aid of the first ends (7a, 7c) of the first and the second cable (6a, 6c) and the cable system (2) is arranged so as to be movable with respect to the support profile (21), the fixing profile (8) can be brought closer or further from the support profile (21). A banner (20) which is then attached to both mounting profiles (8) of both support structures (10) can then be tensioned by bringing at least one of the mounting profiles (8) closer to their respective support profile (21).
    As shown in Figure 4, the Allen screw (14) can be turned up and down in the housing (3) with the aid of an Allen key. By turning the Allen screw (14) downwards with the aid of an Allen key, the tensioning means (15) will also move downwards and the first ends (7a, 7c) of the first and the second cable (6a, 6c) will move closer to the bearing profile (21). The banner (20) can therefore be clamped down by turning the Allen screw (14) downwards. In this embodiment, the tensioning means (15) can pass beyond an opening (18) of the carrier (11) and beyond the mounting rails (12) so that the distance that the first ends (7a, 7c) from the mounting profile (8) is relatively large. The socket-head screw (14) is accessible via an insertion opening (17) of the casing (3). This insertion opening (17) is clearly visible in Figure 2 and can optionally be covered in use.
    Due to the many guide wheels (16) and through the opening (18) of the carrier (11), the tensioning device (1), and therefore also the bearing profile (21) and the entire suspension device, can be of compact design and still have a banner ( 20) sufficient clamping. With such a suspension device one can also make mistakes that occur during the mounting of the suspension device, such as placing the support structures (10) too close or too far apart, or errors that occur during the manufacture of the banner (20), for example a too large or small banner (20). For example, it is possible to manufacture a suspension device in which said first ends (7a, 7c) of the first and second cables (6a, 6c) of each tensioning device (1) can move about 8 cm relative to their respective bearing profile ( 21). In total there is then a 16 cm clearance for suspending a banner (20) between the two support structures (10). It does not matter whether the supporting structures (10) are mounted a few centimeters too far or too close apart and / or the banner (20) is a few centimeters too short or too long. The banner (20) may also stretch a few centimeters in use.
    To fix the assembly of the banner (20) and the suspension structure to a façade at a certain height, proceed as follows: first the support structures (10) are attached to the façade at a distance from each other and above each other by the fixing supporting plates (19) of the supporting structures (10) to the facade. During the mounting of these support plates (19), the support profiles (21) can be connected to the tensioning device (1), whether or not already connected to the support plates (19). The fixing profiles (8) may or may not already be connected to their respective tensioning device (1).
    When the bearing structures (10) are connected to the facade, the banner (20) can be connected to it. It is most simple that the fixing profiles (8) are separate from the tensioning devices (1) and the banner (20) on the ground floor is attached to the fixing profiles (8). Then, after the banner (20) is connected to the mounting profiles (8) by sliding the banner (20) into the slots, only the mounting profiles (8) must be connected to the respective first ends (7a, 7c) of the tensioning device (1). This is simply done by inserting these first ends (7a, 7c) into openings (9) of the fixing profiles (8). Of course, it is also possible to slide the banner (20) into the slots of the fixing profiles (8) when the fixing profiles (8) are already connected to their respective tensioning device (1). A ladder or platform can be used to hang the banner (20) at a certain height.
    After the banner (20) is attached to the support structures (10) and thus extends mainly between the two support structures (10), one can begin to tighten the banner (20). This is done by turning the Allen screw (14) of the upper tensioning device (1) downwards and optionally also turning the Allen screw (14) of the lower tensioning device (1) upwards.
    After the banner (20) has been tensioned with the aid of the displacement mechanism, one can return to the ground floor. In this embodiment, one should not worry about the banner (20) stretching due to weather conditions. Namely, the springs (4) will absorb voltage changes on the first and the second cable (6a, 6c), so that the banner (20) always remains taut, even if the banner (20) stretches somewhat due to weather conditions.
    If it is desired to change the banner (20), it is easy to detach the mounting profiles (8) from the tensioning devices (1) and remove the banner (20) to attach another banner (20) to it.
    权利要求:
    Claims (12)
    [1]
    C O N C L U S I E S
    Clamping device (1) provided for suspending a banner (20) under tension, comprising a cable system (2) with a first cable (6a) with two ends, the first end (7a) of which can be connected to a banner (20 A second cable (6c) with two ends, the first end (7c) of which can be connected to a banner (20) and is provided to be spaced apart from the first end (7a) of the first cable (6a) extending, wherein the tensioning device (1) comprises a displacement mechanism with which the first and the second cable (6a, 6b) are displaceable, and wherein the first and the second cable (6a, 6b) can be brought under tension by displacement of the respective first and second cable (6a, 6b) by means of the displacement mechanism, characterized in that the cable system (2) comprises compensating means (4), which are provided for changing voltage on the first and second cable (6a, 6b) use to catch, so the first and the second cable (6a, 6b) to keep under tension, the displacement mechanism comprises a tensioning means (15) connected to the cable system (2), which is arranged so as to be movable, and wherein movement of the tensioning means (15) displacement of the first and the second cable ( 6a, 6b), the cable system (2) comprises a central cable (6b) which is connected to the tensioning means (15) and with its two cable ends connected to a said compensating means (4), said compensating means (4) are respectively connected to the second ends of the first and the second cable (6a, 6c).
    [2]
    Tensioning device (1) according to claim 1, characterized in that said compensating means (4) comprise one or more springs.
    [3]
    Clamping device (1) according to claim 1 or 2, characterized in that the cable system (2) comprises one or more safety cables (5) and at least one of said compensating means (4) is provided with a said safety cable (5).
    [4]
    Clamping device (1) according to one of the preceding claims, characterized in that the displacement mechanism comprises a rotatable Allen screw (14) with which the clamping means (15) can be moved.
    [5]
    Clamping device (1) according to one of the preceding claims, characterized in that the displacement mechanism comprises one or more cable guides for guiding said cables (6a, 6b, 6c).
    [6]
    Clamping device (1) according to claim 5, characterized in that the one or more cable guides comprise one or more rotatable guide wheels (16).
    [7]
    Suspension device with which a banner (20) can be suspended under tension, comprising two support structures (10) which are provided for being mounted at a distance from each other on a wall and which can each be connected to one banner (20) around the banner (20) ) to be substantially suspended between the two support structures (10), wherein at least one support structure (10) comprises a tensioning device (1), provided for suspending the banner (20) under tension, wherein the tensioning device (1) a cable system (2) ) with at least a first cable (6a) with two ends, the first end (7a) of the first cable (6a) being connectable to the banner (20), characterized in that the tensioning device (1) comprises a displacement mechanism with which the first cable (6a) is movable, and wherein the first cable (6a) can be brought under tension by displacement of the first cable (6a) by means of the displacement mechanism.
    [8]
    Suspension device according to claim 7, characterized in that the tensioning device (1) is a tensioning device as defined in one of claims 1 to 6.
    [9]
    Suspension device according to claim 8, characterized in that both support structures (10) comprise a tensioning device (1) as defined in one of claims 1 to 6.
    [10]
    Suspension device according to one of claims 7 to 9, characterized in that said at least one support structure (10) comprises a fixing profile (8) that can be connected to said first end (7a) of the first cable (6a), wherein the mounting profile (8) is provided to be connected to a banner (20).
    [11]
    Suspension device according to claim 10, characterized in that the fixing profile (8) comprises a slot in which the banner (20) can be slid.
    [12]
    An assembly of a banner (20) and a suspension device, characterized in that the suspension device is a suspension device as defined in any one of claims 7 to 11.
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    同族专利:
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    BE1023061A9|2016-12-15|
    BE1023061A1|2016-11-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH06124065A|1992-10-13|1994-05-06|Takai Internatl J Design Kk|Sheet-shaped member extending device|
    US20110056057A1|2009-09-08|2011-03-10|Ruei-Hsing Lin|Structure of steel cable fastener|
    KR20120095116A|2011-02-18|2012-08-28|주식회사 동방이엔지|Tension controller of banner, and bulletin board using the same|
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    申请号 | 申请日 | 专利标题
    BE20155290A|BE1023061A9|2015-05-07|2015-05-07|Clamping device for a banner|BE20155290A| BE1023061A9|2015-05-07|2015-05-07|Clamping device for a banner|
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