Door and window

Abstract

The utility model provides a door and window which comprises a fixing frame, a door and window sash, a first sliding opening and closing mechanism installed between the lower end of the door and window sash and the fixing frame and a second sliding opening and closing mechanism installed between the upper end of the door and window sash and the fixing frame, and the door and window sash is installed on the fixing frame through the first sliding opening and closing mechanism and the second sliding opening and closing mechanism. Each of the first sliding opening and closing mechanism and the second sliding opening and closing mechanism comprises a rail arranged on a fixed frame transverse profile of the fixed frame, a pulley assembly slidably arranged on the rail and a rotating arm, the rotating arm comprises a fixed frame connecting end and a door and window sash connecting end, the fixed frame connecting end is hinged to the pulley assembly, and the door and window sash connecting end is hinged to the fixed frame connecting end. The door and window sash connecting end is hinged to the end of the door and window sash, the door and window sash can be opened backwards through rotation of the rotating arm, the door and window sash comprises a door and window sash connecting piece, a connecting piece mounting hole for containing and fixing the door and window sash connecting piece is formed in the outer side face of a sash frame transverse profile of the door and window sash, and the door and window sash connecting end of the rotating arm is hinged to the door and window sash connecting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, in particular to a door and window. Background Art

[0002] Doors and windows are divided into various types according to the different opening methods, such as casement type, sliding type, inward-opening sliding type and inward-tilting sliding type. Among them, the inward-opening sliding door and window is a door and window that can not only move the door and window sash relative to the fixed frame in parallel to the indoor direction for an appropriate distance so that a gap of a certain distance is formed between the door and window sash and the fixed frame for ventilation, but also can slide the door and window sash left and right relative to the fixed frame to realize the opening and closing of the door and window. Usually, the inward-opening sliding door and window includes: a fixed frame, a door and window sash slidably mounted on the fixed frame, and a sliding opening and closing mechanism mounted between the end of the door and window sash and the fixed frame, and the door and window sash is mounted on the fixed frame through the sliding opening and closing mechanism. Among them, the sliding opening and closing mechanism includes a track arranged on the fixed frame cross profile of the fixed frame, a pulley assembly slidably arranged on the track and a rotating arm, the rotating arm includes a fixed frame connecting end and a door and window sash connecting end, the fixed frame connecting end is hinged to the pulley assembly, and the door and window sash connecting end is hinged to the end of the door and window sash, and the door and window sash can be opened backward and parallel relative to the fixed frame by rotating the rotating arm. However, the above-mentioned prior art has the following drawbacks: when the rotating arm of the sliding opening and closing mechanism is hinged to the end of the door and window sash, it is hinged to the door and window sash frame angle bracket, which requires the processing of a hinge structure on the angle bracket. The angle bracket is a connecting component connecting the horizontal and vertical profiles of the sash frame and needs to have a certain strength. Processing a hinge structure on the angle bracket will weaken the strength of the angle bracket, resulting in a weakening of the overall strength of the door and window sash. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a door and window that can ensure the strength of the door and window sash.

[0004] To achieve the above-mentioned object, the utility model provides a door and window, which comprises a fixed frame, a door and window sash slidably mounted on the fixed frame, a first sliding opening and closing mechanism mounted between the lower end of the door and window sash and the fixed frame, and a second sliding opening and closing mechanism mounted between the upper end of the door and window sash and the fixed frame, wherein the door and window sash is mounted on the fixed frame through the first sliding opening and closing mechanism and the second sliding opening and closing mechanism, and the first sliding opening and closing mechanism and the second sliding opening and closing mechanism both comprise a track provided on a fixed frame horizontal profile of the fixed frame, a slidable A pulley assembly and a rotating arm are provided on the track. The rotating arm includes a fixed frame connecting end and a door and window sash connecting end. The fixed frame connecting end is hinged to the pulley assembly, and the door and window sash connecting end is hinged to the end of the door and window sash. The door and window sash can be opened backward relative to the fixed frame by rotating the rotating arm. The door and window sash includes a door and window sash connector. A connector mounting hole for accommodating and fixing the door and window sash connector is provided on the outer side surface of the lower sash frame horizontal profile of the door and window sash. The door and window sash connecting end of the rotating arm is hinged to the door and window sash connector. In this way, by providing a door and window sash connector hinged to the door and window sash connecting end of the rotating arm and fixing the door and window sash connector to the lower sash frame horizontal profile with higher strength in the door and window sash, the strength of the door and window sash can be ensured, thereby ensuring the overall quality of the door and window.

[0005] The preferred solution of the above technical solution is: when viewed from the front and rear directions, the door and window sash connecting piece is step-shaped, the first step of the door and window sash connecting piece is composed of fixing arms on both sides of the lower end of the door and window sash connecting piece, the fixing arm portion is provided with a first fixing through-hole, the outer side profile of the lower sash frame cross profile is provided with a first profile fixing hole, the fixing arm abuts against the outer profile, and the first step is fixed to the outer profile through the connecting piece, the first fixing through-hole and the first profile fixing hole, the second step of the door and window sash connecting piece is located above the first step, and in the left and right directions, the length of the second step is smaller than the length of the first step, and second fixing through-holes are respectively provided on the left and right sides of the second step, and a second profile fixing hole is provided on the inner profile of the lower sash frame cross profile, the upper surface of the second step abuts against the inner profile, and the second step is fixed to the inner profile through the connecting piece, the second fixing through-hole and the second profile fixing hole.

[0006] The doors and windows provided herein utilize a stepped door and window sash connector, with the first and second steps of the door and window sash connector respectively fixed to the outer and inner profiles of the lower sash frame transverse profile. This double-layer fixing structure allows the door and window sash connector to be securely fixed to the lower sash frame transverse profile, further enhancing the strength of the door and window sash.

[0007] A preferred embodiment of the above technical solution is as follows: a blind hole is provided between the two second fixing through-holes of the second step, a hinge structure is provided in the blind hole, and the door and window sash connecting end of the rotating arm is hingedly connected to the door and window sash connecting member via the hinge structure. Thus, by providing a blind hole in the door and window sash connecting member, the door and window sash connecting end of the rotating arm is hingedly connected to the door and window sash connecting member via the hinge structure provided in the blind hole. This improves the hinge strength between the rotating arm and the door and window sash connecting member, further enhancing the overall strength of the door and window.

[0008] The preferred solution of the above technical solution is: the hinge structure includes a bearing, an annular base, an open ring, a hinge shaft and a cover plate, the annular base includes a first hole portion and a second hole portion coaxially arranged along the axial direction of the annular base, the diameter of the second hole portion is larger than the diameter of the first hole portion and the inner diameter of the bearing, the open ring is accommodated in the second hole portion, the inner diameter of the open ring is smaller than the diameter of the hinge shaft, the outer diameter of the open ring is larger than the diameter of the first hole portion and the inner diameter of the bearing, the cover plate is fixed to the lower end of the door and window sash connecting piece, used to prevent the bearing, the annular base and the open ring from escaping from the blind hole, an opening coaxial with the bearing and the annular base is opened on the cover plate, the hinge shaft is arranged in the opening, the bearing and the annular base, an annular groove is provided at a position corresponding to the opening ring on the outer surface of the hinge shaft, and the opening ring is located in the annular groove. Through the above structure, the open ring can be elastically deformed in its radial direction due to the opening. In the process of inserting the hinge shaft into the opening of the bearing, the annular base, the open ring and the cover plate, the open ring elastically opens outward when it contacts the outer surface of the hinge shaft except the annular groove. When the annular groove of the hinge shaft moves to the position of the open ring, the elastic deformation of the open ring recovers inward and is stuck in the annular groove, thereby fixing the hinge shaft axially.

[0009] A preferred embodiment of the above technical solution is that there are two bearings, and the annular base is located between the two bearings, so that the axial fixation of the hinge shaft can be made more stable.

[0010] A preferred embodiment of the above technical solution is that the door / window sash connector further includes a third step disposed above the second step, and the blind hole extends into the third step. The provision of the third step extends the length of the blind hole, thereby increasing the space for the hinge structure. This improves the hinge strength between the rotating arm and the door / window sash connector, further enhancing the overall strength of the door / window.

[0011] A preferred embodiment of the above technical solution is that the bearing and the annular base both have a clearance fit within the blind hole, and the hinge shaft has a clearance fit within the bearing and the first hole. This improves the hinge strength of the pivot arm and the door / window sash connection, further enhancing the overall strength of the door / window.

[0012] A preferred embodiment of the above technical solution is that the end of the hinge shaft that is inserted into the door and window sash connector is provided with a chamfered portion. When the hinge shaft passes through the opening ring, the chamfered portion of the hinge shaft presses against the opening ring, causing the opening ring to elastically expand outward. The chamfered portion of the hinge shaft can serve as a guide, facilitating the hinge shaft's passage through the opening in the cover plate and the opening ring.

[0013] A preferred embodiment of the above technical solution is as follows: the cover plate is provided with two third fixing through-holes, and the two third fixing through-holes are respectively aligned with the two second fixing through-holes, or the two third fixing through-holes are respectively aligned with the two first fixing through-holes. In this way, when the two third fixing through-holes are respectively aligned with the two second fixing through-holes, the cover plate can be fixed to the lower end of the door and window sash connector while the second step of the door and window sash connector is fixed to the inner profile via the connector, the second fixing through-hole, and the second profile fixing hole; when the two third fixing through-holes are respectively aligned with the two first fixing through-holes, the cover plate can be fixed to the lower end of the door and window sash connector while the first step is fixed to the outer profile via the connector, the first fixing through-hole, and the first profile fixing hole.

[0014] A preferred embodiment of the above technical solution is that two door and window sash connectors are provided, one on each side of the lower sash frame transverse profile of the door and window sash. By hingedly connecting the two rotating arms to the door and window sash connectors on either side of the lower sash frame transverse profile, the force applied to the door and window sash is evenly distributed, further enhancing the overall strength of the door and window.

[0015] As described above, the door and window involved in the present invention has the following beneficial effects: by providing a door and window sash connecting piece hinged to the door and window sash connecting end of the rotating arm, and fixing the door and window sash connecting piece on the lower side sash frame horizontal profile with higher strength in the door and window sash, the strength of the door and window sash can be ensured, thereby ensuring the overall quality of the door and window. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the indoor side of the doors and windows in this application, in which the doors and windows are in a closed state.

[0017] Figure 2 This is a three-dimensional diagram of the doors and windows in this application, in which the door and window sashes are in an open state.

[0018] Figure 3 This is a structural diagram of the track, pulley assembly and rotating arm installed on the fixed frame cross profile when the door and window sashes of the present application are closed.

[0019] Figure 4 This is a structural diagram of the track, pulley assembly and rotating arm installed on the fixed frame cross profile when the door and window sashes of the present application are opened.

[0020] Figure 5 This is a three-dimensional view of the door and window sash of the door and window in this application.

[0021] Figure 6 This is a structural diagram of the door and window sash connector installed on the sash frame cross profile of the door and window sash in this application.

[0022] Figure 7 for Figure 6 AA section view.

[0023] Figure 8 This is a schematic diagram of the structure of the pulley assembly, rotating arm and door and window sash connector of the door and window in this application when assembled.

[0024] Figure 9 This is a top view of the assembled pulley assembly, rotating arm and door and window sash connector of the door and window in this application.

[0025] Figure 10 for Figure 9 BB cross-sectional view.

[0026] Figure 11 This is an exploded view of the door and window sash connector of the doors and windows in this application.

[0027] Figure 12 This is an axial cross-sectional view of the annular base of the door and window in this application.

[0028] Component number description

[0029] 10 Fixed frame

[0030] 110 Lower fixed frame horizontal profile

[0031] 20 Door and window sashes

[0032] 201 Door and window sash connector

[0033] 201A Fixed arm

[0034] 201B First fixing hole

[0035] 201C Second fixing hole

[0036] 201D blind hole

[0037] 202 connectors

[0038] 203 bearings

[0039] 204 Ring Base

[0040] 204A First hole

[0041] 204B Second hole

[0042] 205 split ring

[0043] 206 articulated shaft

[0044] 206A annular groove

[0045] 207 cover

[0046] 207A opening

[0047] 207B Third fixing hole

[0048] 21 fan frame

[0049] 210 Lower sash frame cross section

[0050] 211 outer profile

[0051] 211A First profile fixing hole

[0052] 212 inner profile

[0053] 212A Second profile fixing hole

[0054] 213 Connector mounting hole

[0055] 22 Window Sash Panel

[0056] 30 First sliding opening and closing mechanism

[0057] 31 tracks

[0058] 32 pulley assembly

[0059] 33 Rotating arm

[0060] 331 fixed frame connection end

[0061] 332 Door and window sash connection end

[0062] 40 Handle lock mechanism DETAILED DESCRIPTION

[0063] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0064] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0065] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0066] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0067] like Figure 1 and Figure 2 As shown, the present application provides a door and window, including a fixed frame 10, a door and window sash 20, a first sliding opening and closing mechanism 30, a second sliding opening and closing mechanism and a handle lock mechanism 40. For the convenience of description, in the following embodiments, the definitions of various directions are as follows: the width direction of the door and window is defined as the left and right direction, the height direction of the door and window is defined as the up and down direction, and the thickness direction of the door and window is defined as the front and back direction. The thickness direction of the door and window is also the indoor and outdoor direction, and the outdoor side direction is the front direction, and the indoor side direction is the rear direction. Based on this, Figure 1 In the views shown, the left and right sides of the paper are respectively the left and right directions, the upper and lower sides of the paper are respectively the upper and lower directions, and the front and back sides of the paper are respectively the rear and front directions.

[0068] like Figures 1 to 4As shown, the fixed frame 10 is fixed to the opening of the building and includes horizontal fixed frame profiles extending left and right and vertical fixed frame profiles extending up and down. The horizontal fixed frame profiles include upper and lower fixed frame horizontal profiles 110, and the vertical fixed frame profiles include left and right fixed frame vertical profiles. The door and window sashes 20 are slidably mounted to the fixed frame 10 via a first sliding opening and closing mechanism 30 and a second sliding opening and closing mechanism. The first sliding opening and closing mechanism 30 is installed between the lower end of the door and window sashes 20 and the fixed frame 10, and the second sliding opening and closing mechanism is installed between the upper end of the door and window sashes 20 and the fixed frame 10. The door and window sash 20 includes a sash frame 21 and a window sash panel 22 in the sash frame 21. The sash frame 21 includes horizontal sash frame profiles extending left and right and vertical sash frame profiles extending up and down, wherein the horizontal sash frame profiles include upper sash frame horizontal profiles and lower sash frame horizontal profiles 210, and the vertical sash frame profiles include left sash frame vertical profiles and right sash frame vertical profiles. The window sash panel 22 is usually glass.

[0069] Figures 1 to 4 (in Figure 3 and Figure 4 (The fixed frame horizontal profile is omitted in the figure) Taking the first sliding opening and closing mechanism 30 as an example, the basic structures of the first sliding opening and closing mechanism 30 and the second sliding opening and closing mechanism are shown. The first sliding opening and closing mechanism 30 and the second sliding opening and closing mechanism both include a track 31 provided on the fixed frame horizontal profile of the fixed frame 10, a pulley assembly 32 slidably provided on the track 31, and a rotating arm 33. The track 31 extends in the left-right direction on the fixed frame horizontal profile. The pulley assembly 32 can slide left and right along the track 31. The rotating arm 33 includes a fixed frame connecting end 331 and a door and window sash connecting end 332. The fixed frame connecting end 331 is hinged to the pulley assembly 32, and the door and window sash connecting end 332 is hinged to the end of the door and window sash 20. In this way, the opening and sliding operation of the door and window sash 20 is as follows: rotate the handle lock mechanism 40 to put the door and window sash 20 in the unlocked state, pull the handle lock mechanism 40 backward to make the door and window sash 20 move backward and parallel relative to the fixed frame 10, at this time, the door and window sash 20 moves backward away from the fixed frame 10, and at the same time drives the rotating arm 33 to rotate backward to a predetermined angle with the hinge point of the fixed frame connection end 331 and the pulley assembly 32 as the rotation center, then a certain distance of gap is formed between the door and window sash 20 and the fixed frame 10, and the state of the door and window at this time is defined as a ventilation state; when the door and window sash 20 needs to be further opened, push the door and window sash 20 to the left, at this time, the leftward thrust received by the door and window sash 20 is transmitted to the pulley assembly 32 through the rotating arm 33, then the pulley assembly 32 drives the door and window sash 20 to move left, and the door and window sash 20 is further opened, and the state of the door and window at this time is defined as an open state. In this embodiment, the door and window sash 20 is configured to slide to the left to become an open state. In other embodiments, the door and window sash 20 can also be configured to slide to the right to become an open state.

[0070] like Figure 5 and Figure 6 As shown, the door and window sash 20 includes a door and window sash connector 201. A connector mounting hole 213 is provided on the outer surface of the lower side sash frame horizontal profile 210 of the door and window sash 20 to accommodate and fix the door and window sash connector 201. The door and window sash connector end 332 of the rotating arm 33 is hinged to the door and window sash connector 201. Figure 12 In the lower sash frame cross profile 210, the left side of the outer side shows the connector mounting hole 213 when the door and window sash connector 201 is not installed, and the right side shows the connector mounting hole 213 with the door and window sash connector 201 installed. In this way, by providing the door and window sash connector 201 hingedly connected to the door and window sash connecting end 332 of the rotating arm 33 and fixing the door and window sash connector 201 to the lower sash frame cross profile 210 of the door and window sash 20, which has higher strength, the strength of the door and window sash 20 can be ensured, thereby ensuring the overall quality of the door and window.

[0071] Further, if Figure 7 As shown, the lower sash frame horizontal profile 210 for fixing the door and window sash connector 201 includes: an outer profile 211 whose lower surface serves as the lower outer surface of the door and window sash 20 and an inner profile 212 located above the outer profile 211. The specific structure of the door and window sash connector 201 is as follows: when viewed from the front and rear directions, the door and window sash connector 201 is in the shape of a step, and the first step of the door and window sash connector 201 is composed of the fixed arm portions 201A on both sides of the lower end of the door and window sash connector 201, and a first fixing through hole 201B is provided on the fixed arm portion 201A, and a first profile fixing hole 211A is provided on the outer profile 211 of the lower side sash frame cross profile 210. When the door and window sash connector 201 is inserted into the connector mounting hole 213, the fixed arm portion 201A abuts against the lower surface of the outer profile 211, and the first step is fixed to the outer profile 211 through the connector 202, the first fixing through hole 201B and the first profile fixing hole 211A. The second step of the door and window sash connector 201 is located above the first step. In the left-right direction, the length of the second step is shorter than that of the first step. Second fixing holes 201C are respectively provided on the left and right second steps, extending through the lower surface of the door and window sash connector 201 and the upper surface of the second step. Second profile fixing holes 212A are provided on the inner profile 212 of the lower sash frame cross profile 210. When the door and window sash connector 201 is inserted into the connector mounting hole 213, the upper surface of the second step abuts against the lower surface of the inner profile 212. The second step is fixed to the inner profile 212 via the connector 202, the second fixing hole 201C, and the second profile fixing hole 212A. The connector 202 may be, for example, a screw or a rivet, and the door and window sash connector 201 is fixed to the lower sash frame cross profile 210 by threading or riveting.

[0072] The doors and windows provided herein use a stepped door and window sash connector 201, with the first step and second step of the door and window sash connector 201 respectively fixed to the outer profile 211 and inner profile 212 of the lower sash frame transverse profile 210. This double-layer fixing structure allows the door and window sash connector 201 to be firmly fixed to the lower sash frame transverse profile 210, further enhancing the strength of the door and window sash 20.

[0073] Further, if Figure 7 and Figure 10 As shown, a blind hole 201D is provided between the two second fixing through-holes 201C on the second step of the door / window sash connector 201, extending downwardly through the lower surface of the door / window sash connector 201. A hinge structure is provided in the blind hole 201D, and the door / window sash connecting end 332 of the rotating arm 33 is hingedly connected to the door / window sash connector 201 via the hinge structure. Thus, by providing the blind hole 201D in the door / window sash connector 201, the door / window sash connecting end 332 of the rotating arm 33 is hingedly connected to the door / window sash connector 201 via the hinge structure provided in the blind hole 201D. This improves the hinge strength between the rotating arm 33 and the door / window sash connector 201, further enhancing the overall strength of the door / window.

[0074] Further, if Figures 10 to 12 As shown, the hinge structure includes a bearing 203, an annular base 204, an open ring 205, a hinge shaft 206 and a cover plate 207. The annular base 204 includes a first hole portion 204A and a second hole portion 204B coaxially arranged along the axial direction of the annular base 204. The diameter of the second hole portion 204B is larger than the diameter of the first hole portion 204A and the inner diameter of the bearing 203. The open ring 205 is accommodated in the second hole portion 204B. The inner diameter of the open ring 205 is smaller than the diameter of the hinge shaft 206, and the outer diameter of the open ring 205 is larger than the diameter of the first hole portion 204A. The cover plate 207 is fixed to the lower end of the door and window sash connector 201 to prevent the bearing 203, annular base 204, and open ring 205 from escaping from the blind hole 201D. The cover plate 207 is provided with an opening 207A coaxial with the bearing 203 and annular base 204. The hinge shaft 206 is disposed within the opening 207A, the bearing 203, and the annular base 204. An annular groove 206A is provided on the outer surface of the hinge shaft 206 at a position corresponding to the open ring 205, and the open ring 205 is located in the annular groove 206A. The bearing 203 is preferably a needle roller bearing. In addition, the end of the hinge shaft 206 not inserted into the door and window sash connector 201 is fixedly connected to the door and window sash connection end 332 of the rotating arm 33, preferably with a threaded connection.

[0075] The method for installing the hinge structure in the blind hole 201D is as follows: place the open ring 205 in the second hole portion 204B of the annular base 204, then arrange the bearing 203 and the annular base 204 accommodating the open ring 205 along the axial direction of the blind hole 201D and place them in the blind hole 201D, then fix the cover plate 207 to the lower end of the door and window sash connector 201, and finally insert the hinge shaft 206 from the lower end of the door and window sash connector 201 into the opening 207A of the cover plate 207, the bearing 203, the annular base 204 and the open ring 205 and make the open ring 205 located in the annular groove 206A. Since the open ring 205 has an opening, it can be elastically deformed along its radial direction. In the process of inserting the hinge shaft 206 into the opening 207A of the bearing 203, the annular base 204, the open ring 205 and the cover plate 207, the open ring 205 elastically opens outward when it contacts the outer surface of the hinge shaft 206 except the annular groove 206A. When the annular groove 206A of the hinge shaft 206 moves to the position of the open ring 205, the elastic deformation of the open ring 205 recovers inward and is stuck in the annular groove 206A, thereby fixing the hinge shaft 206 axially.

[0076] Furthermore, in the blind hole 201D, the bearing 203, the annular base 204 and the open ring 205 can be arranged in various ways. Figure 10 One preferred arrangement is provided, namely, two bearings 203, with the annular base 204 located between the two bearings 203. This arrangement further stabilizes the axial fixation of the hinge shaft 206. In other embodiments, for example, a single bearing 203 may be provided, with the annular base 204 housing the split ring 205 located above or below the bearing 203.

[0077] Further, if Figure 7 and Figure 10 As shown, the door / window sash connector 201 further includes a third step positioned above the second step, with the blind hole 201D extending into the third step. The provision of the third step extends the length of the blind hole 201D, thereby increasing the space for the hinge structure. This improves the hinge strength between the pivot arm 33 and the door / window sash connector 201, further enhancing the overall strength of the door / window.

[0078] Furthermore, the bearing 203 and the annular base 204 are both loosely fitted with the blind hole 201D, and the hinge shaft 206 is loosely fitted with the bearing 203 and the first hole portion 204A. This improves the hinge strength of the rotating arm 33 and the door and window sash connector 201, further enhancing the overall strength of the door and window.

[0079] Further, if Figure 10 and Figure 11As shown, the end of the hinge shaft 206 that is inserted into the door and window sash connector 201 is provided with a chamfered portion. When the hinge shaft 206 passes through the opening 207A of the cover plate 207, the chamfered portion of the hinge shaft 206 can serve as a guide, making it easier for the hinge shaft 206 to pass through the opening 207A. Moreover, when the hinge shaft 206 passes through the open ring 205, the chamfered portion of the hinge shaft 206 squeezes the open ring 205 and causes the open ring 205 to elastically expand outward.

[0080] Further, if Figure 7 and Figure 11 As shown, two third fixing through holes 207B are provided on the cover plate 207 , and the two third fixing through holes 207B are respectively aligned with the two second fixing through holes 201C, or the two third fixing through holes 207B are respectively aligned with the two first fixing through holes 201B. In this way, when the two third fixing through holes 207B are respectively aligned with the two second fixing through holes 201C, the second step of the door and window sash connector 201 can be fixed to the inner profile 212 through the connecting piece 202, the second fixing through hole 201C and the second profile fixing hole 212A, and the cover plate 207 can be fixed to the lower end of the door and window sash connector 201 at the same time; when the two third fixing through holes 207B are respectively aligned with the two first fixing through holes 201B, the first step can be fixed to the outer profile 211 through the connecting piece 202, the first fixing through hole 201B and the first profile fixing hole 211A, and the cover plate 207 can be fixed to the lower end of the door and window sash connector 201 at the same time.

[0081] Further, if Figure 5 and Figure 6 As shown, there are two door and window sash connectors 201, one on each side of the lower sash frame cross profile of the door and window sash 20. By hingedly connecting the two rotating arms to the door and window sash connectors 201 on both sides of the lower sash frame cross profile, the door and window sash can be evenly stressed, further enhancing the overall strength of the door and window.

[0082] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0083] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A door and window, comprising a fixed frame (10), a door and window sash (20) slidably mounted on the fixed frame (10), a first sliding opening and closing mechanism (30) mounted between the lower end of the door and window sash (20) and the fixed frame (10), and a second sliding opening and closing mechanism mounted between the upper end of the door and window sash (20) and the fixed frame (10), wherein the door and window sash (20) is mounted on the fixed frame (10) via the first sliding opening and closing mechanism (30) and the second sliding opening and closing mechanism, wherein the first sliding opening and closing mechanism (30) and the second sliding opening and closing mechanism both comprise A track (31) is provided on a fixed frame transverse profile of the fixed frame (10), a pulley assembly (32) and a rotating arm (33) are slidably provided on the track (31), the rotating arm (33) comprises a fixed frame connecting end (331) and a door and window sash connecting end (332), the fixed frame connecting end (331) is hinged to the pulley assembly (32), the door and window sash connecting end (332) is hinged to the end of the door and window sash (20), and the door and window sash (20) can be opened backward relative to the fixed frame (10) by rotating the rotating arm (33), characterized in that: The door and window sash (20) comprises a door and window sash connector (201); a connector mounting hole (213) for accommodating and fixing the door and window sash connector (201) is provided on the outer side of a sash frame transverse profile (210) of the door and window sash (20); and a door and window sash connecting end (332) of the rotating arm (33) is hingedly connected to the door and window sash connector (201).

2. The door and window according to claim 1, characterized in that: When viewed from the front-back direction, the door and window sash connecting member (201) is in a step-like shape. The first step of the door and window sash connecting member (201) is composed of fixed arms (201A) on both sides of the lower end of the door and window sash connecting member (201), the fixed arms (201A) are provided with a first fixing through hole (201B), the outer profile (211) of the sash frame transverse profile (210) is provided with a first profile fixing hole (211A), the fixed arms (201A) abut against the outer profile (211), and the first step is fixed to the outer profile (211) through the connecting member (202), the first fixing through hole (201B) and the first profile fixing hole (211A). The second step of the door and window sash connecting member (201) is located above the first step. In the left-right direction, the length of the second step is less than that of the first step. Second fixing through holes (201C) are respectively provided on the left and right sides of the second step. A second profile fixing hole (212A) is provided on the inner profile (212) of the sash frame cross profile (210). The upper surface of the second step abuts against the inner profile (212). The second step is fixed to the inner profile (212) via the connecting member (202), the second fixing through hole (201C) and the second profile fixing hole (212A).

3. The door and window according to claim 2, characterized in that: A blind hole (201D) is provided between the two second fixing through holes (201C) of the second step, and a hinge structure is provided in the blind hole (201D), and the door and window sash connecting end (332) of the rotating arm (33) is hinged to the door and window sash connecting member (201) via the hinge structure.

4. The door and window according to claim 3, characterized in that: The hinge structure comprises a bearing (203), an annular base (204), an open ring (205), a hinge shaft (206) and a cover plate (207). The annular base (204) comprises a first hole portion (204A) and a second hole portion (204B) coaxially arranged along the axial direction of the annular base (204); the diameter of the second hole portion (204B) is larger than the diameter of the first hole portion (204A) and the inner diameter of the bearing (203); the open ring (205) is accommodated in the second hole portion (204B); the inner diameter of the open ring (205) is smaller than the diameter of the hinge shaft (206); and the outer diameter of the open ring (205) is larger than the diameter of the first hole portion (204A) and the inner diameter of the bearing (203). The cover plate (207) is fixed to the lower end of the door and window sash connector (201) to prevent the bearing (203), the annular base (204) and the open ring (205) from coming out of the blind hole (201D). The cover plate (207) is provided with an opening (207A) coaxial with the bearing (203) and the annular base (204). The hinge shaft (206) is arranged in the opening (207A), the bearing (203) and the annular base (204); an annular groove (206A) is provided on the outer surface of the hinge shaft (206) at a position corresponding to the open ring (205); and the open ring (205) is located in the annular groove (206A).

5. The door and window according to claim 4, characterized in that: There are two bearings (203), and the annular base (204) is located between the two bearings (203).

6. The door and window according to claim 5, characterized in that: The door and window sash connecting member (201) further comprises a third step arranged above the second step, and the blind hole (201D) extends into the third step.

7. The door and window according to claim 6, characterized in that: The bearing (203) and the annular base (204) are both clearance-matched with the blind hole (201D), and the hinge shaft (206) is clearance-matched with the bearing (203) and the first hole portion (204A).

8. The door and window according to claim 6, characterized in that: The end of the hinge shaft (206) inserted into the door and window sash connecting piece (201) is provided with a chamfered portion. When the hinge shaft (206) passes through the open ring (205), the chamfered portion of the hinge shaft (206) squeezes the open ring (205) and causes the open ring (205) to elastically open outward.

9. The door and window according to claim 6, characterized in that: The cover plate (207) is provided with two third fixing through holes (207B), and the two third fixing through holes (207B) are respectively aligned with the two second fixing through holes (201C), or the two third fixing through holes (207B) are respectively aligned with the two first fixing through holes (201B).

10. The door or window according to any one of claims 1 to 9, characterized in that: Two door and window sash connectors (201) are provided, and are respectively located on both sides of the lower sash frame transverse profile of the door and window sash (20).

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