CN112431527A - Stable corner combining structure of opening fan and corner combining code therein - Google Patents

Abstract

The invention provides a stable angle combining structure of an opening sash, which comprises a section bar and angle combining codes, wherein the end head of the section bar is at an angle of 45 degrees, the 90-degree angle combining codes form two support legs, the two support legs are respectively inserted into angle combining accommodating spaces on the adjacent end heads of two adjacent section bars forming a frame of the opening sash, and a glass panel is fixed on the frame formed by the section bar and the angle combining codes; the angle-extruding fixing device is characterized in that two angle-extruding fixing points are arranged on each supporting leg and arranged along the width direction of each supporting leg, and fixing grooves corresponding to the two angle-extruding fixing points are arranged on the angle-assembling codes. The opening fan stabilizes the corner combining structure, so that the rigidity of the corner combining node is improved; meanwhile, the design concept of strong nodes and weak members is realized, so that the potential safety hazard of fan falling caused by sudden damage due to small variability of the corner nodes of the group can be avoided; and the problem of unreasonable stress on the group angle is also solved. The invention also provides a corner combining code in the corner combining structure.

Description

Stable corner combining structure of opening fan and corner combining code therein

Technical Field

The invention relates to the technical field of building curtain walls and doors and windows, provides a stable corner combining structure of an opening sash, and further provides a corner combining code in the corner combining structure.

Background

The group angle structure is a connecting structure for splicing main sectional materials in a frame of an opening sash of a glass curtain wall into a frame, and the group angle structure is a structure for fixedly connecting aluminum alloy sectional materials together by using mechanical connection and chemical bonding modes through metal group angle codes.

The angle combining method widely applied in the engineering at present comprises extruding angle combining, screw angle combining and the like. The extrusion corner assembling has the advantages of simple process, high production efficiency and the like. The extrusion corner assembling connection is formed by splicing the section bar 1 milled at 45 degrees and the 90-degree corner assembling code 2 and then extruding and fixing the section bar by a corner assembling machine. The traditional extrusion corner assembling has the defects of easy looseness, easy variability, poor rigidity and the like. In order to improve the rigidity of the corner assembly and prevent deformation, it is common practice to inject high-strength rigid glue at the corner assembly position to bond the corner assembly 2 and the section bar 1 into a whole.

The combination of the corner set 2 and the profile 1 by means of an adhesive construction is shown in fig. 1. Firstly, glue is injected into a cavity of the section bar from a glue injection hole 1a formed in the section bar 1, and then the group corner connector 2 is inserted into the two section bars and is bonded in the section bars. In the method, a glue injection hole 1a needs to be formed in a section bar 1, the diameter of the glue injection hole 1a is usually 6mm, a connecting pipe 3b is connected to a glue injection machine 3 and is connected with a power glue injection nozzle 3a, the power glue injection nozzle 3a abuts against the glue injection hole 1a for glue injection, glue is filled into a gap between a cavity of the section bar and a corner combining code, then the section bar is extruded by a corner combining machine, a part of extruded corners are embedded into a fixing groove 2a on the corner combining code 2, and the corner combining code 2 is connected and fastened with the section bar 1 through the extruded corners and glue.

The corner assembling structure has the advantages of multiple parts, complex processing and assembly, multiple working procedures and high cost. And the strength of the glue is lower than that of metal, the bonding area is difficult to ensure after glue injection, the surface cleaning is difficult to influence the bonding effect due to the complicated angle code section combination, and the improvement effects of the assembly strength and the rigidity of the section are limited due to the glue. Therefore, the strength of the corner-group node of the prior art corner-group section bar frame is lower than that of the section bar, and the rigidity is weaker and closer to the hinge connection.

In engineering practice, a large number of opening fans which are damaged by opening fan group corner positions fall off in windy weather, and especially the opening fans used on curtain walls are often in high-rise, so that once the fan frame is damaged and falls off, life and property safety can be seriously threatened. Moreover, such falling often results in no visible signs on the outer surface, high concealment and greater risk.

In addition, as shown in fig. 3, the stress analysis of the opening fan in the use process shows that the opening fan is under the action of glass dead weight load G and wind load when in normal use, and through the analysis of the transmission path of the force, the upper group corner node of the opening fan is in a tension state, and the lower group corner node is in a combined state of bending and tension. When the group angle is pulled, the profile punching and riveting structure in the existing group angle structure is easily pulled out from the fixing groove of the group angle code, so that the node is damaged.

As shown in fig. 4, under the tension condition in normal use, the extrusion position as the connection fixing point is not in the same plane with the position of the glass 4, and the glass dead weight G is the most dominant load of the opening fan, so that the load is at a certain distance from the supporting point, and the group corner node is in a twisted state, which is not reasonable in the stress design of the structure. In addition, the corner set code in the prior art is installed in a full section in a cavity of the profile, thereby causing the load to be eccentric, and causing the part of the corner set code far away from the glass panel to have no bearing function.

Disclosure of Invention

The invention aims to improve the problems in the prior art and provides a stable corner combining structure of an opening fan, which improves the bearing capacity and the safety storage of a corner combining structure; the invention also provides a corner combining code therein.

The purpose of the invention is realized as follows:

a stable corner combining structure of an opening sash comprises a section bar and corner combining codes, wherein the end of the section bar is at an angle of 45 degrees, the 90-degree corner combining codes form two support legs, the two support legs are respectively inserted into corner combining accommodating spaces on the adjacent ends of two adjacent section bars forming a frame of the opening sash, and a glass panel is fixed on the frame formed by the section bar and the corner combining codes; the method is characterized in that:

two extrusion angle fixing points are arranged along the width direction of each support leg, and fixing grooves corresponding to the two extrusion angle fixing points are formed in the group of angle codes.

The bending strength of the group of corner connectors is greater than that of a frame of an opening sash formed by the section bars, so that the flexural yielding of the frame section bars occurs before the flexural yielding of the group of corner connectors.

Specifically, the thickness of the corner fastener is 14.5-17.5 mm.

Furthermore, the basic thickness of the upper and lower side beams of the opening at the mid-span position of the support leg of the angle code is 1.5-3 times of the wall thickness of the frame profile, and the thickness of the side beams of the upper and lower side beams of the support leg opening is changed according to a gradual change angle of 2-3 degrees, so that the closer to the root of the support leg, the larger the thickness is. Furthermore, the bending rigidity of the section of the upper and lower side beams of the corner brace set at the minimum thickness position cannot be smaller than that of the section.

Preferably, the length of the two legs of the set of corner connectors is 65-90 mm. Further, the clear distance between the two extrusion angle fixing points is not less than 3 times of the thickness value of the profile material.

The clear distance is the distance between the adjacent inner side edges of two corner holes on the profile.

The minimum distance from the location of the pinch point to the glass panel is typically 25 mm.

The turning part of the fixing groove is designed into a round angle.

And two support legs of the group of corner connectors are provided with porous structures to form a lattice beam structure.

Preferably, 3-5 openings are provided in one of said legs. In addition, on two stabilizer blades of group's angle sign indicating number, still be equipped with the protection recess corresponding the outside of fixed recess.

Preferably, the depth of the protection groove is shallower than the fixing groove. In particular, the depth of the protective groove is not less than 2 times the thickness of the profile material.

The distance between the protection groove and the fixing groove is not less than 10 mm.

The upper limit of the distance between the protection groove and the fixed groove is limited by the whole length which does not influence the corner combining codes.

The outer end of the protection groove is provided with a hook bent towards the inside of the groove.

And the outer sides and the inner side surfaces of the two support legs of the corner combining device are provided with anti-drag grooves.

Preferably, the drag reduction groove is arranged on the side wall of the corner connector corresponding to the stiffening rib between the holes on the support leg.

Preferably, the drag reduction groove is provided in the entire length range of the inner sides of the two legs.

Preferably, the drag reduction groove is provided on the outer side surface of the leg over the entire length of the outer face of the protection groove.

In addition, on the cross section of the section bar, the corner code accommodating space is a part of the section of the cavity of the section bar, namely, the group of corner codes are installed in a part of the cavities, the corner code accommodating space is a part of the cavity close to one side of the installation glass of the opening sash, and the other part of the cavity is a vacant cavity.

The hollow cavity corresponds to a transmission rod placing groove formed in the section bar, the transmission rod prevents the groove from forming a convex edge on the bottom surface of the cavity in the section bar, the side edge of the group corner brace abuts against the convex edge, and a boss is further arranged on the top surface of the section bar cavity, corresponds to the convex edge up and down and is used for abutting against the upper portion of the side edge of the group corner brace.

In addition, the opening sash stable angle combining structure comprises a glass support, one end of the glass support is arranged on the lower bottom surface of the glass panel on the opening sash, and the other end of the glass support is arranged on the lower bottom surface of the section bar of the opening sash frame body.

Preferably, the other end of the glass support extends in the width direction of the profile between the two corner extrusion fixing points.

The invention also provides a corner combining code in the opening fan stable corner combining structure, which is characterized in that: the fixing grooves on the group of corner codes correspond to the two corner extrusion fixing points.

Preferably, two of the legs of the set of corner connectors have a porous structure thereon, so as to form a lattice beam structure. Preferably, the support leg is provided with 3-5 openings.

And protection grooves are also arranged on the two support legs of the group of corner connectors and correspond to the outer surfaces of the fixing grooves.

Preferably, the distance between the protection groove and the fixing groove is not less than 10mm, and the depth is not less than 2 times of the thickness of the profile material. The upper limit of the distance between the protection groove and the fixed groove is limited by the whole length which does not influence the corner combining codes.

And the outer sides and the inner side surfaces of the two support legs of the corner combining device are provided with anti-drag grooves.

Preferably, the drag reduction grooves are arranged on the side walls of the corner connectors corresponding to the stiffening ribs. Preferably, the drag reduction groove is provided in the entire length range of the inner sides of the two legs. On the outer side surface of the supporting leg, the drag reduction groove is arranged in the whole length range of the outer surface of the protection groove. Preferably, the depth of the resistance groove is 0.5mm-1mm, and the length is 2mm-5 mm.

The opening fan provided by the invention has the advantages that the firm corner combining structure enables the rigidity of the corner combining node to be improved, so that a simply supported beam calculation model of a traditional opening fan can be upgraded into a continuous beam calculation model, and the deformation of a lower cross beam is reduced; meanwhile, the design concept of strong nodes and weak members is realized, so that the potential safety hazard of fan falling caused by sudden damage due to small variability of the corner nodes of the group can be avoided; and the problem of unreasonable stress on the group angle is also solved.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of a glue injection group corner of an opening fan in the prior art.

Fig. 2 is a schematic structural diagram of a corner-squeezing group of an opening fan in the prior art.

Fig. 3 is a schematic view of the force applied to the opening fan.

Fig. 4 is a schematic structural diagram of an opening fan including a corner combining structure in the prior art.

Fig. 5 is a schematic view of a stable corner combining structure of the opening fan according to the present invention.

Fig. 6 is a schematic structural diagram of corner combining codes in the corner combining structure of fig. 5.

Fig. 6a is a schematic structural diagram showing a structure with a gradually changing thickness of corner connectors.

Fig. 7 is a schematic structural view of an opening fan including a corner combining structure according to the present invention.

Fig. 8 is a schematic view of the corner combining structure provided by the invention, when the corner combining structure is pulled away by a pulling force, the corner combining structure is prevented from being pulled away by the protection groove.

Fig. 9 is a force-bearing cloud diagram of a corner combining structure provided by the invention.

Fig. 10 is a force curve diagram of the group corner code provided by the present invention.

Fig. 11 is a cloud diagram of bending stress of a group corner code provided by the invention.

Wherein: the section bar comprises a section bar 10, an angle code accommodating space 11, a vacant cavity 12, a transmission rod accommodating groove 13, a convex rib 14, a boss 15 and an extrusion angle 16; the corner combining clamp comprises a corner combining brace 20, a fixing groove 21, a protecting groove 22, a barb 221, a drag reduction groove 23, a stiffening rib 24 and an opening 25; a glass panel 30; a glass holder 40; wool tops 41; a structural adhesive 50; the fixed point a of the squeezing angle, the fixed point b of the squeezing angle and the clear distance d between the two fixed points of the squeezing angle.

Detailed Description

As shown in fig. 5, the opening sash stabilizing and angle combining structure provided by the present invention comprises a section bar 10 and angle combining codes 20, wherein the end of the section bar 10 is at an angle of 45 degrees, the 90-degree angle combining codes 20 form two support legs, and the two support legs are inserted into the angle combining accommodating space in the section bar from the angle combining accommodating holes on the adjacent ends of the two adjacent section bars 10 forming the opening sash frame; a glass panel 30 is fixed to the frame formed by the section bars 10 and the corner set stops 20 (see figure 7). Two corner extrusion fixing points are arranged between the section bar 10 and the corner combining brace 20: the angle squeezing fixing points a and b (see fig. 7) are arranged along the width direction of each support leg, and the fixing grooves 21 (see fig. 6) corresponding to the two angle squeezing fixing points are arranged on the group angle code 20.

The corner combining unit 20 is a connecting member, and therefore is a main bearing member, and the self weight of the opening sash mainly comes from the self weight of the glass panel, as shown in fig. 7, theoretically, the closer the supporting point is to the load, the smaller the bending moment is generated, and for the corner combining unit 20, the closer the corner combining unit is to the glass panel, the smaller the torque is, and the complex stress state of the corner combining unit in the bending, shearing and twisting combination can be avoided as much as possible. However, the machining process has an effect on the location of the pinch point and the minimum distance D from the location of the pinch point to the glass panel 30 is typically 25mm, considering that the pinch process has a range of stress concentration regions for the clinching of the profile.

In order to reduce the torsional damage of the corner combining unit again, an angle squeezing fixing point is added, one angle squeezing fixing point in the prior art is changed into two angle squeezing fixing points, namely, a fixing constraint is added, the torsional bearing capacity of the corner combining unit is further improved, and the rigidity of the corner combining node can also be improved. The material between the two pinch angle fixing points still needs a certain bearing capacity to avoid the tearing off, so the clear distance d between the two pinch angle fixing points is not less than 3 times of the thickness value of the material of the section bar 10. The clear distance d is the distance between the adjacent inside edges of two corner holes in the profile 10.

As shown in FIG. 6, the two legs of the corner set 20 have a porous structure to form a lattice beam structure. In the embodiment shown in fig. 6, one leg of the corner set fastener has 4-5 holes, which is reasonably more rigid than the corner set fastener of the porous lattice beam structure of the corner set fastener in the prior art (shown in fig. 2). The bending moment can be better transmitted, and the weakening influence on the corner-to-corner stacking section is reduced.

The improvement on the group angle structure can improve the strength and the rigidity of the group angle structure. In addition, the strength and the rigidity of the corner combining structure can be further improved by increasing the thickness and the length of the corner combining structure. In theory, the larger the thickness of the corner combining piece is, the higher the bearing capacity is, but the bearing capacity can meet the design requirement without increasing a larger amount; in addition, the longer the length of the group corner code is, the smaller and smaller the increment of the shearing resistance bearing capacity of the group corner node is, so that the bearing capacity can be effectively improved by properly increasing the length by 25-40 mm. In a preferred embodiment, on the basis of the existing corner connector, the thickness of the corner connector is increased by 1.8mm, the length of the corner connector is increased by 35mm, and the corner connector is formed into a corner connector with the thickness of 15.5mm and the length of 85mm (see fig. 6).

The variable-thickness design of the group corner brace 20 is mainly designed according to the test damage phenomenon of the group corner brace, and in the test, the group corner joint is shown as the root part of the group corner brace is broken when being bent and damaged, and is a cantilever beam damage form. When the requirement of the whole thickness of the corner combining support leg is met, the thickness of the upper side beam and the lower side beam of the opening 25 is designed to be variable. In the prior art, the thickness of the upper and lower side beams of the group corner brace open hole is 3.5mm, but in the invention, the basic thickness of the upper and lower side beams of the open hole at the mid-span position of the brace is firstly determined to be 1.5-3 times of the wall thickness t of the frame profile, and the thickness of the side beams is changed according to a gradual change angle of 2-3 degrees by combining a stress model of a cantilever beam, and the thickness of the side beams is larger when the side beams are closer to the root of the brace (as shown in figure 6 a).

According to the design method of the cantilever beam, a thickening design is designed, and the bending rigidity of the section at the position with the minimum thickness is required to be ensured to be larger than that of the section of the sectional material, so that the node still has certain bending deformation resistance. The bending stiffness of the section at the minimum thickness cannot be less than the bending stiffness of the section of the profile, so that this position acts as an effective support point to resist bending deformations of the profile.

As a specific example, the basic thickness of the upper and lower side members in the hole at the midspan position of the leg is 3.5mm, and the thickness of the side members is changed in accordance with a gradual change angle of 2.26 deg.

And small hole corner combining codes with longer length and thicker thickness are adopted, so that the bending strength and the bending rigidity of the corner combining nodes are improved. The bending strength of the corner combining block 20 is larger than that of the section bar 10. Such a corner set structure becomes essentially a rigid node. The group angle structure in the prior art is poor in rigidity, the lower beam of the opening fan is generally calculated according to the consideration of a simply supported beam, and the deflection is limited by 3 mm. For larger opening fans, it is often the case that the calculations are difficult to pass. For example, a project can be controlled to 2mm by moving the spacers to the two ends of the glass. The group angle structure of the invention has high rigidity, can be calculated according to a continuous beam model, and has deflection of only 0.5mm, thereby reducing the deformation of the lower cross beam of the opening sash frame.

In the prior art, in order to obtain a rigid or semi-rigid node, an adhesive structure is used, but as mentioned above, the adhesive structure has great uncertainty, the strength and the rigidity of the adhesive structure are low, and the structure is not ideal.

As shown in fig. 9 and 10, the bending resistance graph a of the group corner structure provided by the present invention and the graph B of the existing group corner structure provided by the present invention are shown, it can be seen that the bending stiffness and the bending strength of the group corner structure provided by the present invention are both greatly improved, and through the calculation of finite elements, in the elastic stage, the bending stiffness of the group corner node in the prior art is 0.93KN × m/rad, the bending stiffness in the present invention is 1.12KN × m/rad, and the bending stiffness of the node is increased by 20.27%. In addition, the bearing capacity is increased by 19.43 percent.

In addition, the safety design concept of strong node and weak member can be realized by improving the rigidity of the group angle structure. In the prior art, the corner combining code often has problems prior to the sectional material, the problem is hidden very strongly and is not easy to be found, once the corner combining code is damaged, the problem that the glass panel of the opening sash falls off can occur, particularly, the large-sized curtain wall opening sash has great danger on a high floor under the condition. And if the member is a strong node and a weak member, the flexural yielding of the member is allowed to occur before the node. The structural member, especially the sectional material structural member, can generate larger deformation after yielding, is easy to detect, and can be repaired, replaced or other safety measures can be taken in time. The node is small in size, limited in space and limited in deformation capacity, so that the potential safety hazards of fan falling and the like caused by sudden damage when the node is not deformed greatly can be well solved. Through the measures, the bending strength of the corner combining device is larger than that of a frame of an opening sash formed by the section bars, so that the flexural yielding of the frame occurs before the flexural yielding of the corner combining device.

In order to improve the torsion of the corner-group joint, the corner-group joint is arranged in a part of the cavity in the profile 10, and the part of the cavity is a partial cavity close to one side of the glass panel 30 for installing the opening sash. As shown in fig. 7, in the cross section of the profile 10, the corner brace accommodating space 11 is a part of the cavity of the profile, i.e. a part of the cavity is provided with the group of corner braces, the corner brace accommodating space 11 is a part of the cavity close to one side of the glass panel 30 for installing the opening sash, and the other part of the cavity is a vacant cavity 12. The empty cavity 12 corresponds to a drive rod receiving recess 13 made in the profile 10, which recess is also present in the prior art, as indicated by a in fig. 4. The driving rod prevents the groove 13 from forming a rib 14 on the bottom surface of the cavity in the section bar 10, the side edge of the group corner brace 20 is abutted against the rib 14, and a boss 15 is arranged on the top surface of the section bar 10, is up and down corresponding to the rib 14 and is used for abutting against the upper part of the side edge of the group corner brace 20. The partial chamber installation group angle sign indicating number has avoided keeping away from the eccentric problem that causes of load that the material that the partial group angle sign indicating number of glass face portion did not play too big bearing effect is extravagant. In addition, the position of the extrusion angle fixing point is improved, and the eccentric distance between the extrusion angle position and the center of gravity of the glass is reduced.

The damage of the group corner node has the problems that the material strength of the corner extrusion fixing point is insufficient except the breakage of the group corner code, and the sectional material and the group corner code are pulled off. As shown in figure 3, under the action of the gravity G of the glass panel, the upper corner nodes of the opening fan are in tension, and the lower corner nodes are in a combined state of bending and tension. In order to prevent the problem that the profile riveting structure is pulled out of the fixing groove of the corner combining brace when the corner combining brace is pulled, so that the node is damaged, as shown in fig. 6, the corner combining brace is further provided with a protective groove 22 outside the fixing groove 21 on two supporting legs. The protection groove 22 can be seen in fig. 8, under the action of a tensile force, the extrusion angle 16 inserted into the fixing groove 21 can be bent and deformed and can be pulled out from the fixing groove 21, and by using the corner combining code 20 provided with the protection groove, the bending and deformed extrusion angle 16 can be clamped into the protection groove 22 after sliding, and the protection groove 22 can prevent the profile 10 from being pulled out. The depth of the protection groove 22 is shallower than that of the fixing groove. From the phenomenon that the node is damaged by pulling, when the corner extrusion 16 moves to the protection groove, the corner extrusion is turned over, as shown in fig. 8, after the corner extrusion 16 is turned over, the corner extrusion becomes an overlapped state, so that the thickness is doubled on the basis of the original corner extrusion thickness, and the protection groove 22 can accommodate the turned-over corner extrusion volume as long as the double material thickness of the profile 10 is satisfied. Whereas for the fixing groove 21, the depth is usually not less than twice the thickness of the material, because the squib 16 is in a spread state in the fixing groove 21.

The outer end of the protection groove 22 can be provided with a barb 221 bent inwards, so that the group corner brace 20 can be better prevented from being pulled off.

The protective recess 22 is an effective safety reserve. The protection groove 20 is provided, and when the group angle node is greatly displaced under the tension state, the deformation position of the extrusion angle 16 can be clamped into the protection groove after sliding. The depth of the protection groove is shallower than that of the fixed groove, and the barb design is carried out, so that the main sectional material and the group corner connector are prevented from sliding relatively. The damage is basically in the state of strong wind and the opening fan is in the opening state, so that the corner combining node is in the state of power impact, the state generally has larger load and shorter duration, when the load exceeds the material strength of the corner squeezing fixing point, energy is consumed between the section bar and the corner combining code through friction, and then the section bar moves into the protection groove to be clamped, so that the section bar cannot fall off, and the protection measure is easily found and added. Therefore, friction energy consumption needs a certain movement displacement, the distance between the protection groove and the fixing groove is not less than 10mm, but the distance cannot be too large, and the overall length of the corner combining device is affected when the distance is too large. As shown in fig. 7, the glass bracket 40 included in the stable corner combining structure of the opening sash has one end disposed on the lower bottom surface of the glass panel 30 on the opening sash and the other end disposed on the lower bottom surface of the section bar 10 of the frame body of the opening sash. The glass carrier 40 is fixed to the frame profile by screws, and the glass panel 30 is in turn fixed to the frame profile 10 by structural glue 50. The glass carrier 40 extends in the width direction of the profile 10 to a position between two corner extrusion fixing points. The invention changes the connection structure of the glass support and the section bar, changes the connection structure from the side surface connected with the section bar frame to the bottom surface connected with the section bar frame, the gravity of the glass panel 30 is mainly transmitted to the section bar through the structural adhesive 50 and the glass support, and the glass support 40 extends to the frame on the basis of the prior art, so that the stress of the corner combining structure is more reasonable, and the corner combining structure is effectively protected. The elongation of the glass tray 40 intersects the wool tops 41 on the frame, where the problem of intersection of the two members can be solved by breaking the wool tops 41 at the location of the glass tray.

As shown in FIG. 6, a plurality of drag reducing grooves 23 are provided on the outer and inner side surfaces of the up-down side members of the two legs of the corner set 20. Drag reducing grooves 23 are provided in the lattice beam structure of the corner set 20 on the side walls corresponding to the stiffeners 24. The drag reducing groove 23 is provided over the entire length of the inner sides of the two leg side members, and the drag reducing groove 23 is provided over the entire length of the outer faces of the fixing groove 21 and the protecting groove 22 on the outer side faces of the leg side members.

When group's angle sign indicating number and section bar equipment, there are impurity such as aluminium bits to hinder group's angle sign indicating number and fill in the section bar intracavity phenomenon, set up drag reduction recess 23 and can effectively solve impurity and hinder the scheduling problem. The anti-drag grooves are not completely arranged on the existing corner combining codes (as shown in figure 2), and the corner combining codes with shorter length are not provided with the anti-drag grooves.

Theoretically, the more the drag reduction grooves are arranged, the more obvious the drag reduction effect is, but the weakening effect on the bearing capacity of the corner brace needs to be considered. The cross-sectional area of the opening 25 on the corner combining brace, namely the cavity position, is small, the shearing resistance and bending resistance bearing capacity are relatively low, so that a resistance reducing groove is not suitable to be designed at the position, the resistance reducing groove 23 is arranged at the stiffening rib 24 between the two openings 25 of the corner combining brace, the geometric shape of aluminum scraps is generally strip-shaped or sheet-shaped, the aluminum scraps with larger size are not suitable to be attached in the cavity of the section bar or on the corner combining brace, the length of the aluminum scraps is generally within 2mm, the thickness is within 0.5mm, and after the production condition of the corner combining brace is combined, the depth of the resistance reducing groove is designed to be 0.5mm-1mm, and the length is 2mm-5 mm.

In conclusion, the invention mainly considers the aspects of the stress form of the node, the production and processing conditions and the like for improving the group angle structure, and the improvement range is scientific and reasonable. For example: the overlong length of the corner combining brace enables the corner combining brace to be in a bending shear stress state, but can limit the bending deformation of the section bar. The thickness of the corner combining code is increased, so that the bending resistance and the shearing resistance can be effectively improved, but the brittleness is increased. Through the position and the number adjustment of the extrusion angle, the torsion is reduced, the torsion resistance constraint is increased, and no defect exists. The protection groove can effectively improve the condition that the group corner joint is not damaged in tension. The resistance reducing grooves increase the convenience of splicing and mounting the corner combining nodes, and the influence on the safety of the structure can be ignored. The final thickening design is based on the cantilever beam model, and the section selection is more reasonable.

The group angle structure and the group angle code provided by the invention have at least one of the following characteristics:

1. and small hole corner combining codes with longer length and thicker thickness are adopted, so that the bending strength and the bending rigidity of the corner combining are improved. The bending strength of the corner combining brace is larger than that of the cross section. And the safe design concept of continuous beam assumption and strong node and weak component is realized.

2. The full-section assembling corner brace is changed into a partial cavity assembling corner brace, so that the material waste caused by the eccentricity of load and the fact that the partial assembling corner brace far away from the glass surface cannot play a large bearing role is avoided. The position of the fixed point of the extrusion angle is improved, and the eccentric distance between the extrusion angle position and the center of gravity of the glass is reduced.

3. And a protection groove is arranged on the corner combining brace. When the group angle node is greatly displaced under the tension state, the extrusion angle deformation position can be clamped into the groove after sliding so as to prevent the continuous tension deformation. The depth of the groove is shallower than that of the fixed groove, and the barb design is carried out, so that the main section bar is prevented from sliding relative to the group corner brace.

4. Set up special drag reduction recess on group's angle sign indicating number, group's angle sign indicating number exists impurity such as aluminium bits and hinders group's angle sign indicating number and fill in section bar intracavity phenomenon when the equipment, and impurity hindrance scheduling problem can effectively be solved in this design.

The 5-group angle code variable thickness design has the advantages that when a group angle node is bent, the group angle code belongs to a cantilever beam model, so that the stress at the far end of a cantilever is small, the stress at the fixed end of the cantilever is large, and the design meets the stress characteristic and can improve the utilization rate of materials. Compared with the glue injection method, the invention realizes higher group angle strength and rigidity by lower cost, fewer processes and fewer parts.

In a tensile test, the mean value of the tensile strength of the existing group angle node is 7.28KN, the mean value of the tensile strength of the group angle node provided by the invention is 10.20KN, and the tensile strength is improved by 40.11%.

As shown in fig. 11, when the group corner brace provided by the invention is pulled, it can be seen in finite element analysis that a force transmission path is clear, the variable thickness thickening design of the root of the group corner brace can reduce stress, and the round corner design of the fixing groove is beneficial to reducing stress concentration. The design of the group angle code variable thickness can adapt to stress distribution, the closer to the root, the larger the bending moment, so that the thickness of the root is increased, and the bending resistance can be effectively improved.

Claims (10)

1. A stable corner combining structure of an opening sash comprises a section bar and corner combining codes, wherein the end of the section bar is at an angle of 45 degrees, the 90-degree corner combining codes form two support legs, the two support legs are respectively inserted into corner combining accommodating spaces on the adjacent ends of two adjacent section bars forming a frame of the opening sash, and a glass panel is fixed on the frame formed by the section bar and the corner combining codes; the method is characterized in that:

two extrusion angle fixing points are arranged along the width direction of each support leg, and fixing grooves corresponding to the two extrusion angle fixing points are formed in the group of angle codes.

2. The opening sash stabilizing group angle structure of claim 1, wherein: the clear distance between the two extrusion angle fixing points is not less than 3 times of the thickness value of the profile material, and the clear distance is the distance between the adjacent inner side edges of the two extrusion angle holes on the profile; and/or the presence of a gas in the gas,

the minimum distance from the position of the extrusion angle fixing point to the glass panel is generally 25 mm; and/or the presence of a gas in the gas,

the turning part of the fixing groove is designed into a round angle; and/or the presence of a gas in the gas,

the two support legs of the group of corner connectors are provided with porous structures to form a lattice beam structure; and/or the presence of a gas in the gas,

protection grooves are formed in the two support legs of the corner combining device and correspond to the outer faces of the fixing grooves; and/or the presence of a gas in the gas,

the outer sides and the inner side surfaces of the two support legs of the corner combining unit are provided with anti-drag grooves; and/or the presence of a gas in the gas,

on the cross section of the section bar, the corner code accommodating space is a part of the section of the cavity of the section bar, namely, the group of corner codes are installed in a part of cavities, the corner code accommodating space is a part of cavities close to one side of the installation glass of the opening sash, and the other part of cavities are vacant cavities; and/or the presence of a gas in the gas,

the opening sash fixing and angle combining structure comprises a glass supporting strip, one end of the glass supporting strip is arranged on the lower bottom surface of a glass panel on the opening sash, and the other end of the glass supporting strip is arranged on the lower bottom surface of a section bar of the opening sash frame body; and/or the presence of a gas in the gas,

the bending strength of the group of corner connectors is greater than that of a frame of an opening sash formed by the section bars, so that the flexural yielding of the frame occurs before the flexural yielding of the group of corner connectors.

3. The opening sash stabilizing group angle structure of claim 2, wherein:

the thickness of the group of corner connectors is 14.5-17.5 mm; and/or the presence of a gas in the gas,

the basic thickness of the upper and lower side beams of the opening at the mid-span position of the support leg of the group of corner connectors is 1.5-3 times of the wall thickness of the frame profile, and the thickness of the upper and lower side beams of the support leg opening is changed according to the gradual change angle of 2-3 degrees, so that the closer to the root of the support leg, the greater the thickness of the upper and lower side beams is; and/or the presence of a gas in the gas,

the bending rigidity of the section at the minimum thickness position of the upper side beam and the lower side beam of the group of corner connectors cannot be smaller than that of the section; and/or the presence of a gas in the gas,

the length of the two support legs of the group of corner connectors is 65-90 mm; and/or the presence of a gas in the gas,

the supporting legs are provided with 3-5 open pores.

4. The opening sash stabilizing group angle structure of claim 2, wherein: the depth of the protection groove is shallower than that of the fixed groove; and/or the presence of a gas in the gas,

the distance between the protection groove and the fixing groove is not less than 10 mm; and/or the presence of a gas in the gas,

the depth of the protection groove is not less than 2 times of the thickness of the profile material; and/or the presence of a gas in the gas,

the outer end of the protection groove is provided with a hook bent towards the inside of the groove.

5. The opening sash stabilizing group angle structure of claim 2, wherein: the anti-drag groove is arranged on the side wall of the corner combining brace corresponding to the stiffening rib between the holes on the support leg; and/or the presence of a gas in the gas,

the anti-drag groove is arranged in the whole length range of the inner sides of the two support legs; and/or the presence of a gas in the gas,

on the outer side surface of the supporting leg, the drag reduction groove is arranged in the whole length range outside the fixing groove and/or the protection groove; and/or the presence of a gas in the gas,

the depth of the resistance groove is 0.5mm-1mm, and the length is 2mm-5 mm.

6. The opening sash stabilizing group angle structure of claim 2, wherein: the hollow cavity corresponds to a transmission rod placing groove formed in the section bar, the transmission rod prevents the groove from forming a convex edge on the bottom surface of the cavity in the section bar, the side edge of the group corner brace abuts against the convex edge, and a boss is further arranged on the top surface of the section bar cavity, corresponds to the convex edge up and down and is used for abutting against the upper portion of the side edge of the group corner brace.

7. The opening sash stabilizing group angle structure of claim 2, wherein: the other end of the glass supporting strip extends between the two angle extrusion fixing points in the width direction of the section bar.

8. A corner brace in the opening sash securing corner brace structure as recited in any one of claims 1 to 7, wherein: the fixing grooves on the group of corner codes correspond to the two corner extrusion fixing points.

9. The corner brace of claim 8, wherein:

the thickness of the group of corner connectors is 14.5-17.5 mm; and/or the presence of a gas in the gas,

the basic thickness of the upper and lower side beams of the opening at the mid-span position of the support leg of the group of corner connectors is 1.5-3 times of the wall thickness of the frame profile, and the thickness of the upper and lower side beams of the support leg opening is changed according to the gradual change angle of 2-3 degrees, so that the closer to the root of the support leg, the greater the thickness of the upper and lower side beams is; and/or the presence of a gas in the gas,

the bending rigidity of the section at the minimum thickness position of the upper side beam and the lower side beam of the group of corner connectors cannot be smaller than that of the section; and/or the presence of a gas in the gas,

the length of the two support legs of the group of corner connectors is 65-90 mm; and/or the presence of a gas in the gas,

the turning part of the fixing groove is designed into a round angle; and/or the presence of a gas in the gas,

the two support legs of the group of corner connectors are provided with porous structures to form a lattice beam structure; and/or the presence of a gas in the gas,

protection grooves are formed in the two support legs of the corner combining device and correspond to the outer faces of the fixing grooves; and/or the presence of a gas in the gas,

and the outer sides and the inner side surfaces of the two support legs of the corner combining device are provided with anti-drag grooves.

10. The corner code according to claim 9, wherein:

the supporting legs are provided with 3-5 holes; and/or the presence of a gas in the gas,

the distance between the protection groove and the fixing groove is not less than 10mm, and the depth is not less than 2 times of the thickness of the profile material; and/or the presence of a gas in the gas,

the anti-drag groove is arranged on the side wall of the corner combining brace corresponding to the stiffening rib; and/or the presence of a gas in the gas,

the anti-drag groove is arranged in the whole length range of the inner sides of the two support legs; and/or the presence of a gas in the gas,

on the outer side surface of the supporting leg, the drag reduction groove is arranged in the whole length range of the outer surface of the protection groove.

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