JP2012174832A - Buffer for solar cell array - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate as much as possible the risk of injuries when a person comes into contact with an outer solar cell panel of a solar cell array installed on a rooftop, etc.SOLUTION: A panel frame 2 of a solar cell panel 1 is covered with a long buffer pad 3a, a corner buffer pad 3b and a coupling buffer pad 3c which are integrally formed into a soft member of thermoplastic elastomer having excellent weather resistance. The buffer pads 3a, 3b and 3c are integrally formed and provided with an intersecting piece 31, a contacting piece 32 and a cover piece 35 arranged to have an L-shaped cross section. The contacting piece 32 has a bent rib 33 forming a recessed groove 34 which covers the panel frame 2 irrespective of the presence or absence of a fixing fin 23 of the panel frame 2. The bent rib 33 serves as an internal buffer portion of the buffer pad 3a to enhance a buffer function of the buffer pad 3a, thereby effectively preventing injuries and protecting the solar cell panel 1.

Description

  The present invention relates to a shock absorber for a solar cell array that covers the panel frame so as to impart a buffering action to the panel frame of the solar cell panel that is arranged so as to define the outside of the solar cell array.

  As a buffer device for this type of solar cell array, the present inventor disclosed in Patent Document 1 below on a panel frame of a solar cell panel arranged so as to define the outer periphery of the solar cell array, for example, via a bracket installed on a stand. A panel frame guard having an inverted L-shaped cross section is installed so as to cover the frame, and a cushioning function is imparted to the panel frame by disposing a long cushion pad of thermoplastic elastomer and soft integral on the panel frame guard. According to this, the buffer pad protrudes toward the panel frame guard and comes into contact with the upper surface of the panel frame guard, and the cross piece forms an L-shaped section with the cross piece. A contact piece that comes into contact with the outer surface of the frame guard, and a cross-shaped U-shape covering the crossing piece and the outer surface of the contact piece from the crossing piece, and a tip toward the contacting piece side is a free end. Possibly In addition to the buffer pad, a soft integral corner buffer pad of the same thermoplastic elastomer that is arranged at the corner of the panel frame and connects the buffer pad in the orthogonal direction. It is supposed to be equipped with.

Japanese Patent Application No. 2010-172548

  In this case, the panel frame guard of the solar cell array installed with a mount on the roof of public or public facilities such as elementary and junior high schools, municipal halls, department stores, etc. In addition, by providing a cushioning function to the panel frame guard, even if children or facility users using the rooftop come into contact, the contact shock is absorbed and mitigated to eliminate the possibility of contact accidents as much as possible. In addition, it is possible to achieve an effect that damage to the solar cell array and thus the solar cell panel can be prevented.

  However, in this case, installation of the buffer pad requires work for installation of the bracket and fixing of the panel frame guard to the bracket, and there is a possibility that the installation work of the buffer pad becomes complicated. Without using these brackets and panel frame guards, if the buffer pad can be installed directly on the panel frame of the solar panel arranged so as to define the outside of the solar cell array, work on site will be possible. It becomes possible to simplify.

  The present invention has been made in view of such circumstances, and the solution is to provide a buffering function for the solar cell array by a simple operation as much as possible by directly installing the buffer pad to the panel frame. It is in providing the buffer device of the solar cell array which can be provided.

  Examining along the above-mentioned problems, the panel frame of the solar cell panel located outside the solar cell array is generally made of an extruded aluminum frame material having two types of cross-sectional shapes, that is, The cross-sectional shape is the same as that of the solar battery panel support structure, with the fixing surface for fixing metal fittings or adjacent connection fixings protruding on the outer surface, and the flat surface without the fixing fins. A type with a fixed fin is used as a long-side panel frame for a so-called inclined roof specification, while a flat surface frame member without a fixed fin is a short-side panel frame for the inclined roof specification. In addition, when the solar cell array is installed on the roof of the above-mentioned flat roof, it is supposed that it is used as a panel frame on the long side and the short side of so-called flat roof specifications. It is often the case that a panel frame with an inclined roof specification is used instead of the panel frame as described above. Therefore, when installing the buffer pad directly on the panel frame, the frame having the fixed fins used for the above-mentioned long panel frame It is necessary to be able to perform direct installation on any of these, corresponding to both the material and the frame material of the other flat surface. While maintaining the basic configuration of the buffer pad as much as possible, the buffer pad can be attached to the panel frame regardless of the presence or absence of the fixed fin by disposing a concave groove in the contact piece so that the fixed fin can be received. When it is possible to install the groove directly, the bent rib for forming the groove is arranged so as to protrude outward toward the cover piece side at the upper and lower intermediate positions of the contact piece. If there is a fixed fin Regardless of whether the bent rib is between the contact piece and the cover piece, it effectively and reliably absorbs the shock to the buffer pad, and forms a buffer part inside the buffer pad that enhances the buffer function of the buffer pad. The present inventors have obtained the knowledge that it is more effective for the prevention of injury and the protection of the solar cell array, and thus the solar cell panel without impairing the appearance of the pad, and the present invention has been made based on the knowledge. That is, the invention according to claim 1 is provided with a thermoplastic elastomer soft integral long buffer pad for imparting a buffer function to a panel frame of a solar cell panel located outside the solar cell array, An intersecting piece projecting toward the panel frame and contacting the upper surface of the frame; an intersecting piece having an L-shaped cross section with the intersecting piece; contacting the outer surface of the panel frame; Covering the sides A concave groove that has a U-shaped cross-section and has a cover piece that can be hand-wound by having a free end at the tip side facing the contact piece, and that opens to the panel frame side at an upper and lower intermediate position of the contact piece. The solar cell array shock absorber is formed by arranging bent ribs that project outward toward the cover one side.

  In addition to the above, the invention according to claim 2 is provided with a corner buffer pad, so that the two orthogonal sides of the longitudinal end of the long buffer pad can be connected at the corner of the solar cell array as much as possible. In addition to the above long buffer pad, this is placed at the corner of the panel frame so that it is simple and good in appearance, and also improves the buffer function by the buffer material and facilitates field work. And a thermoplastic elastomer soft corner buffer pad for connecting the buffer pads in an orthogonal direction, and the corner buffer pads are arranged in two orthogonal sides and a cover on the two orthogonal sides in accordance with the outer shape of the buffer pad. A partition plate having a piece and connecting the corner positions of the intersecting piece and the cover piece up and down, and projecting so as to form two orthogonal sides from the partition plate; It has a covering piece which is arranged through a slit corresponding to the concave groove between and covers the contact piece of the buffer pad on the outside, and is capable of receiving the end of the buffer pad in the longitudinal direction. The shock absorber of the solar cell array according to claim 1.

  In addition to the above, the invention according to claim 3 is provided with a connection buffer pad, so that the long buffer pad can be connected as easily and with good appearance as possible, and the buffer function by the buffer material is improved. In addition to the above-mentioned long buffer pad or the corner buffer pad and the corner buffer pad, a soft integral connection of the same thermoplastic elastomer that connects the buffer pads in the longitudinal direction so as to facilitate field work. A buffer pad, the connecting buffer pad has a cross piece and a cover piece that match the outer shape of the buffer pad, and rises from the tip of the cover piece toward the cross piece to form the concave groove between the cross piece. A cushioning pad is disposed through a corresponding slit and has a covering piece for covering the contact piece of the cushioning pad on the outside, so that the end of the cushioning pad in the longitudinal direction can be received. Or it is 2 that a shock absorber of a solar array according to.

  The present invention uses each of these as the gist of the invention as means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 is provided on the outside of a solar cell array installed on a roof of a public or public facility such as an elementary or junior high school, a municipal hall, or a department store. The panel frame of the solar cell panel is covered with a cushion pad with a good appearance, and the panel frame is given a cushioning function to absorb contact shocks even when children or facility users using the rooftop come into contact. Mitigating the possibility of contact accidents as much as possible, and at the same time, preventing damage to the solar cell array, and thus the solar cell panel. By making it possible to accept fixed fins that can be installed in the frame, the buffer pads can be installed directly on the panel frame regardless of the presence of fixed fins. The bending groove for forming the concave groove is disposed so as to project outward toward the cover piece side at the upper and lower intermediate positions of the contact piece, regardless of the presence or absence of the fixing fin. The bending rib is located between the contact piece and the cover piece, effectively and reliably absorbs the shock to the buffer pad, and forms a buffer part inside the buffer pad that enhances the buffer pad function, thereby deteriorating the appearance of the buffer pad. Thus, a shock absorber for a solar cell array can be provided which is more effective in preventing injury, protecting the solar cell array, and thus protecting the solar cell panel.

  In addition to the above, the invention according to claim 2 is provided with a corner buffer pad, so that the two orthogonal sides of the longitudinal end of the long buffer pad can be connected at the corner of the solar cell array as much as possible. It can be performed simply and with a good appearance, and the buffer function by the buffer material can be improved, and the work at the site can be facilitated.

  In addition to the above, the invention according to claim 3 is provided with a connection buffer pad, so that the long buffer pad can be connected as easily and with good appearance as possible, and the buffer function by the buffer material is improved. At the same time, field work can be simplified.

It is a perspective view which shows the relationship between a solar cell array and a buffer pad. It is a longitudinal cross-sectional view of the long side panel frame position of the solar cell array. It is a longitudinal cross-sectional view of the short side panel frame position of the solar cell array. It is a longitudinal cross-sectional view of a long buffer pad. It is a rear view of a long buffer pad. It is a bottom view of a corner buffer pad. It is a top view of a corner buffer pad. It is an end view of a corner buffer pad. It is a longitudinal cross-sectional view which shows the relationship between a corner buffer pad and a buffer pad. It is a side view of a connection buffer pad. It is a rear view of a connection buffer pad. It is a longitudinal cross-sectional view which shows the relationship between a connection buffer pad and a buffer pad. It is a perspective view which shows the arrangement | positioning state of a buffer pad.

  Hereinafter, the present invention will be described in more detail with reference to the example of the drawings. A is, for example, a solar cell array installed on the roof of a school building of an elementary and junior high school. The solar cell panels 1 are arranged in a row direction and a column direction as an aggregate of the solar cell panels 1, and the solar cell panel 1 is arranged on the outer periphery by packaging solar cells according to a conventional method. It is assumed that it is held by the holding piece 21 of the panel frame 2 and fixed to the gantry 11 by fastening the gantry fixing piece 22 at the lower end to the gantry 11 installed on the roof by bolts and nuts.

  At this time, the solar cell panel 1 of the present example is a solar cell panel having an inclined roof specification shared for a flat roof, and therefore, the panel frame 2 includes a long side of the planar rectangular solar cell panel 1 and A frame material having a different cross-sectional shape on the short side is used. That is, the panel frame 2 has the holding piece 21 and the gantry fixing piece 22 in common on the long side and the short side, but on the long side, the panel frame 2 has an inclined roof specification with respect to the roof gantry. Fixing is performed by fixing the metal fittings 23 and projecting the fixing fins 23 used for connecting the metal fittings to each other toward the outside and making the outer surface flat on the short side without providing the fixing fins 23. Two types of cross-sectional frame materials that differ depending on the presence or absence of the fins 23 are used.

  Since the solar cell array A is installed on the rooftop, a buffer device is arranged so as to give a buffering action to the panel frame 2, and the buffer device is a solar cell located outside the solar cell array A. A thermoplastic elastomer soft integral long buffer pad 3a for imparting a buffering function to the panel frame 2 of the battery panel 1, and in this example, in addition to this, the buffer pad 3a is disposed at the corner of the panel frame 2. The same thermoplastic elastomer soft integral corner buffer pad 3b connected in the orthogonal direction and the same thermoplastic elastomer soft integrated elongated buffer buffer pad 3c for connecting the buffer pad 3a in the longitudinal direction are provided. Since the thermoplastic elastomer itself exhibits excellent weather resistance, it can have good durability over a long period of time by being used as a buffer device for the solar cell array A that receives outdoor direct sunlight.

  The buffer pad 3a has a cross piece 31 that protrudes toward the panel frame 2 and contacts the upper surface of the frame 2, and a pair that forms an L-shape in cross section with the cross piece 31 and contacts the outer surface of the panel frame 2. The cover 32 and a cover which is free to handle by covering the outer surface of the contact piece 32 from the crossing piece 31 and forming a U-shaped cross-section with a free end at the contact piece 32 side. It is assumed that a concave groove 34 that opens to the panel frame 2 side is formed at an upper and lower intermediate position of the contact piece 32 and a bent rib 33 that protrudes outward toward the cover piece 35 side is disposed. is there.

  In this example, the buffer pad 3a includes the cross piece 31, the contact piece 32 having the bent rib 33, and the cover piece 35, which are integrally formed with the thermoplastic elastomer with a thickness of about 2 to 3 mm, for example. In this case, the cross piece 31 protrudes inward from the upper end of the contact piece 32, that is, toward the solar cell panel 1, and has an arrowhead-shaped hollow or solid shape with a sharpened tip. In this case, it is assumed that the inward protrusion width is about 1 cm.

  The contact piece 32 is formed in a flat plate shape except that the bending rib 33 is arranged at a middle position in the vertical direction with a height of about 5 to 6 cm from the crossing piece 31, and the bending rib 33 is, for example, the crossing piece. The bent rib 33 having a thickness of 2 mm is formed by forming an L-shaped surface orthogonal to the cross piece 31 and forming a concave groove 34 at the lower and upper middle positions thereof by leaving about a few millimeters from the upper end that forms the base with 31. The bending rib 33 is bent in a U-shaped cross section with the contact piece 32 facing outward, and the opening faces inward, for example, about 5 to 6 mm in height, and the depth It is assumed that a concave groove 34 having a rectangular cross section of a little over 1 cm is formed.

  The cover pieces 35 are formed from the contact pieces 32 to 1. so as to form, for example, a U-shaped to C-shaped cross section, or in this example, a C-shaped cross section, outwardly from the arrowhead-shaped intersection piece. It is assumed to have a curved upper part, a flat intermediate part, and a flat lower part facing toward the contact piece, which are arranged with a space of slightly less than 5 to 2 cm, and the tip of the lower part is connected to the contact piece 32 For example, it is separated by about 1 mm, and this is used as a free end so that it can be manually manipulated by the elasticity of the elastomer. Thus, by making the cover piece 35 a free end, it becomes possible to drain the rain water and dew condensation water in the buffer pad 3 a to the outside from between the cover piece 35 and the contact piece 32.

  The long buffer pad 3a formed in this way makes the contact piece 32 abut against the outer surface of the panel frame 2 in the solar cell panel 1 so as to abut the cross piece 31 from the upper surface of the panel frame 2. The solar battery panel 1 is placed so as to reach the glass surface, and screws 39 at a predetermined interval from the contact piece 32, in this example, tapping screws are screwed into the panel frame 2 to be put into the panel frame 2. The buffer pad 3a is placed so that the L-shaped surface where the intersecting piece 31 and the contact piece 32 are orthogonal to each other is applied to the upper end of the panel frame 2 at this time. Accordingly, the positioning of the buffer pad 3a with respect to the panel frame 2 can be performed, and the screw 39 is fixed by hand-covering the cover piece 35 at the fixing position by the softness of the elastomer, and the contact piece 32. Ne May be a panel frame 2 in the screw 39 held against a 39 to threaded, it is possible to prevent the screw 39 is exposed to the surface of the cushion pad 3a.

  When the buffer pad 3a is installed, the fixing fins 23 protruding from the outer surface of the long panel frame 2 in the planar rectangular solar cell panel 1 are disposed at the upper and lower intermediate positions of the contact piece 32. The bending rib 33 is disposed on the contact piece 32 by receiving the groove 34 in the bending rib 33 so that the contact piece 32 is brought into contact with the flat outer surface of the panel frame 2 on the short side. The buffer pad 3 a can be reliably installed on the panel frame 2 regardless of the presence or absence of the fixing fins 23.

  At this time, since the panel frame 2 of the solar cell array A is covered with the buffer pad 3a having a thickness of about 2 to 3 mm, the panel frame 2 is given a buffer function with a good appearance, and a roof space other than the solar cell array A is provided. Even if it is used for the exercise of children and students, when the children and students who use the rooftop come into contact with the solar cell array A, the contact shock is absorbed and relaxed, and the possibility of a contact accident is eliminated as much as possible. At the same time, the solar cell array A, and thus the solar cell panel 1 can be prevented from being damaged, and the above-mentioned concave portion having a height of about 5 to 6 mm and a depth of more than 1 cm is bent outward at the upper and lower intermediate positions of the contact piece 32. The bent rib 33 forming the groove 34, that is, when the thickness is added, the height is about 1 cm, and the width 1. Since the bending rib 33 having a comparatively large U-shaped cross section of about several centimeters is provided, the bending rib 33 is located between the contact piece 32 and the cover piece 35 regardless of the presence or absence of the fixing fin 23, and the buffer pad. As a result of effectively and reliably absorbing the shock to the buffer 3a and acting as a buffering portion inside the buffer pad that enhances the buffering function of the buffer pad 3a, it is possible to prevent the injury and the solar cell array A, and eventually the solar The battery panel 1 can be further effective for protection.

  On the other hand, the corner buffer pad 3b used together with the long buffer pad 3a has a cross piece 31 and a cover piece 35 that match the outer shape of the buffer pad 3a, and from the tip of the cover piece 35 to the cross piece 31. A covering piece 37 which stands up and is arranged between the cross piece 31 via a slit 36 corresponding to the concave groove 34 and covers the contact piece 32 of the buffer pad 3a on the outside; The longitudinal end of the pad 3a can be received, and the connecting buffer pad 3c has a cross piece 31 and a cover piece 35 that match the outer shape of the buffer pad 3a, and the cross piece from the tip of the cover piece 35. A covering piece 37 which stands up toward 31 and is arranged between the cross piece 31 via a slit 36 corresponding to the concave groove 34 and covers the contact piece 32 of the buffer pad 3a on the outside. Te is the buffer pad 3a longitudinal end as freely accepted.

  That is, the corner buffer pad 3b covers two surfaces of the solar cell panel of the solar cell array A and connects the two panel frames 2 orthogonal to each other at the corner, and the connection buffer pad 3c is connected to the solar cell panel. When the long panel frame 2 of 1 is longer than the long buffer pad 3a, or when the length is in accordance with the long panel frame 2, the solar cell panels adjacent in the column direction When connecting the long buffer pads 3a to each other, they are used to connect the buffer pads 3a at the longitudinal ends of the buffer pads 3a. For this reason, the corner buffer pads 3b and the connection buffer pads are used. 3c, the cross piece 31 is made hollow so as to be larger than the long buffer pad 3a so that the longitudinal end of the long buffer pad 3a can be received in a fitted manner. Arrowhead Similarly, the cover piece 35 has a U-shaped to C-shaped cross section, in this example, a C-shaped cross section, and the distance between the contact piece 31 and the cover piece 35 is set to the long buffer pad 3a. The outer shape of the corner buffer pad 3b is slightly larger than about 2 cm, for example, about 2.5 cm, and the height is about 5.5 cm higher than the long buffer pad 3a. The length of the connection buffer pad 3c is set to a length suitable for receiving and supporting the end portion in the longitudinal direction of the long buffer pad 3a, for example, about 5 to 7 cm.

  Since the corner buffer pad 3b and the connection buffer pad 3c make contact with the panel frame 2 at the corner and connection position, the bent ribs arranged on the contact piece 31 of the long buffer pad 3b. The slit 36 corresponding to the concave groove 34, in the present example, the height of 5 to 6 mm so as not to obstruct the reception of the fixing fin 23 into the concave groove 34 without closing the concave groove 34 by 33. A slit having a slightly higher width than this is arranged in parallel with the concave groove 34.

  For this reason, in the corner buffer pad 3b, the crossing piece 31 and the cover piece 35 are connected vertically at the corner position, and the partition plate 38 is arranged so as to divide the inside into two at the orthogonal position. The side end is fixed in the direction, the covering piece 37 covering the contact piece 31 of the long buffer pad 3a is disposed so as to project, the tip of the cover piece 35 is similarly used as the free end, and the other end of the covering piece 37 is used as the other end. In the connection buffer pad 3c, the cover piece 35 and the contact piece 32 are integrally erected so that the contact piece 32 is erected from the tip of the cover piece 35. It is assumed that the slits 36 corresponding to the concave grooves 34 are arranged.

  In this example, the corner buffer pad 3b is installed in the corner portion and connects the long buffer pad 3a, so that the planar shape is L-shaped, and the connection buffer pad 3c is installed in the straight portion. Then, since the long buffer pads 3a are connected, the planar shape is I-shaped, and each is integrally molded with the thermoplastic elastomer.

  The corner buffer pad 3b and the connection buffer pad 3c may be used as necessary. When these are used, the corner buffer pad 3b and the connection buffer pad 3c are installed on the panel frame 2 before or after the long buffer pad 3a. In this case, the corner buffer pad 3b is covered with a cover piece 37 that is fixed at one end, and the joint buffer pad 3c is covered with the cover piece 37. By hand, the end of the long buffer pad 3a can be easily fitted and connected. Further, the contact piece 32 is similarly fixed with a screw at the corner portion or the straight connection portion, and is fixed with a screw together with the contact piece 32 of the long buffer pad 3a to be fitted. At this time, if the cover piece 35 of the corner cushioning pad 3b is similarly handled by hand, the screw can be fixed, and the connecting cushioning pad 3c intersects with the panel frame 2 positioned. By screwing the cover piece 35 from the side of the piece 31, it is possible to fix the screw, and thus it is possible to easily connect them.

  When the long buffer pad 3a is connected using the corner buffer pad 3b and / or the connection buffer pad 3c as described above, the long buffer pad 3a is fitted into the long buffer pad 3a. In addition to being able to connect the buffer pads 3a with a good appearance, the long buffer pads 3a are provided with the bent ribs 33 in the connecting portion, and further, the corner buffer pads 3b and the connection buffer pads 3c are fitted. The contact shock can be absorbed and relaxed at a high level, so that the prevention of injury and the protection of the solar cell array A, and thus the solar cell panel 1, can be extremely advanced.

  Although the illustrated example is as described above, the present invention includes the use of a long buffer pad alone and the addition of a corner buffer pad and / or a connecting buffer pad. In this case, each of the solar cell array, solar cell panel, panel frame, long buffer pad, cross piece, contact piece, bent rib, cover piece, corner buffer pad used as necessary, connection buffer pad, etc. The shape, structure, material, relationship between these, addition to these, and the like can be in various forms as long as they do not contradict the gist of the invention.

A solar cell array 1 solar cell panel 11 mount 2 panel frame 21 holding piece 22 mount fixing piece 23 fixing fin 3a buffer pad 3b corner buffer pad 3c connecting buffer pad 31 intersecting piece 32 contact piece 33 bending rib 34 concave groove 35 cover piece 36 Slit 37 Covering piece 38 Partition plate 39 Tap screw

Claims (3)

  The panel frame of the solar cell panel located outside the solar cell array is provided with a buffer pad of a thermoplastic elastomer soft integrated long length that provides a buffer function, and the buffer pad protrudes toward the panel frame and is opposed to the upper surface of the frame. An intersecting piece that is in contact with each other, an intersecting piece that is L-shaped in cross section with the intersecting piece, and that is in contact with the outer surface of the panel frame; It has a cover piece that can be hand-wound by setting the tip toward the contact piece side as a free end, and a concave groove that opens to the panel frame side is formed at the upper and lower intermediate positions of the contact piece toward the cover piece side. And a shock absorber for a solar cell array, comprising a bent rib projecting outward.   In addition to the long buffer pad, a soft integral corner buffer pad of the same thermoplastic elastomer that is disposed at the corner of the panel frame and connects the buffer pads in the orthogonal direction is provided. A partition plate that has two orthogonal crossing pieces and two orthogonal cover pieces that match the outer shape of the plate, and that connects the corner positions of these crossing pieces and the cover piece vertically, and projects from the partition plate so as to form two orthogonal sides. In addition, a covering piece is provided between the intersecting piece through a slit corresponding to the concave groove so as to cover the contact piece of the buffer pad on the outside, and the end of the buffer pad in the longitudinal direction can be received. The shock absorber of the solar cell array according to claim 1.   In addition to the long buffer pad or the corner buffer pad and the buffer pad, the buffer pad is also provided with a soft integral connecting buffer pad made of the same thermoplastic elastomer for connecting the buffer pad in the longitudinal direction. The buffer pad facing piece, which has a cross piece and a cover piece matched to each other, and is erected from the front end of the cover piece toward the cross piece and is disposed between the cross piece and a slit corresponding to the concave groove. The solar cell array shock absorber according to claim 1, further comprising: a covering piece that covers the outer surface of the shock absorber pad so that the end of the shock pad in the longitudinal direction can be received.

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