Sliding door and window

Abstract

The invention provides a sliding door and window which comprises a supporting frame, a door and window sash installed on the supporting frame in a sliding mode, a handle lock mechanism installed on the door and window sash, a sliding opening and closing mechanism assembled between the lower end of the door and window sash and the supporting frame and a linkage mechanism. The linkage mechanism comprises a transmission connecting rod, a connecting arm, a connecting piece and a linkage rod, the linkage rod is assembled in the door and window sash in an up-down moving mode, the transmission connecting rod and the transmission rotating shaft are connected and coaxially rotate, the two ends of the connecting arm are hinged to the transmission connecting rod and the connecting piece respectively, and the connecting piece is fixed to the linkage rod. The first limiting piece abuts against one side of the transmission connecting rod in the unlocking rotation direction, the hinge center of the transmission connecting rod and the connecting arm is distributed on the side, close to the first limiting piece, of the connecting line of the rotation center of the transmission connecting rod and the hinge center of the connecting arm and the connecting piece, and the handle at the unlocking position is prevented from being forcibly rotated towards the locking position accidentally.

Description

Technical Field

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

[0002] Sliding doors and windows are a common type of doors and windows, widely used in residential, office and commercial places, etc.

[0003] Generally, sliding doors and windows include a supporting frame, door and window sashes slidably mounted on the supporting frame, a handle locking mechanism mounted on the door and window sashes, a sliding opening and closing mechanism assembled between the lower end of the door and window sashes and the supporting frame, and a linkage mechanism transmission-connected between the handle locking mechanism and the sliding opening and closing mechanism, such as a device for lifting sliding doors and windows disclosed in Chinese invention patent application with publication number CN101068997A.

[0004] Furthermore, the support frame has a track distributed on the lower end side of the sliding opening and closing mechanism, the handle lock mechanism has a rotatable handle, the sliding opening and closing mechanism has a roller plate, a roller and a guide wheel rotatably mounted on the roller plate, a sash support frame fixed at the lower end of the door and window sash, a stopper fixed to the sash support frame, and a guide slot provided in the sash support frame, and the guide wheel is slidably mounted in the guide slot, allowing the roller plate and the sash support frame to move relative to each other in the up and down directions. When the handle in the handle lock mechanism is rotated to the unlocking position, the handle lock mechanism puts the sliding opening and closing mechanism in an open state through a linkage mechanism, at which time the guide wheel is at the lowest end of the guide slot, the roller contacts the track, and the stopper is upwardly separated from the track, so that the door and window sash can be slid along the extension direction of the track. When the handle in the handle lock mechanism is turned to the locked position, the handle lock mechanism puts the sliding opening and closing mechanism into a closed state through the linkage mechanism. At this time, the guide wheel is at the highest end of the guide slide groove, the stopper contacts the track, the roller separates from the track upward, and the weight of the door and window sash presses down the track through the stopper, so the door and window sash cannot slide.

[0005] In the above sliding doors and windows, since the leaf support frame is fixed to the lower end of the door and window leaf, the weight of the door and window leaf always acts on the guide wheel through the leaf support frame, and the force has a vertical component and a horizontal component. The horizontal component always acts on the linkage mechanism through the roller plate, so that the linkage mechanism always has a movement trend, and the movement trend is consistent with the movement direction of the linkage mechanism during the rotation of the handle from the unlocking position to the locking position. Therefore, when the handle is in the unlocking position, when the handle rotates within its loose range, the handle will drive the linkage mechanism to move slightly, but the linkage mechanism always has a movement trend consistent with the locking direction under the influence of the weight of the door and window leaf, and it is very easy for the linkage mechanism to move further in the locking direction, thereby causing the handle to be accidentally rotated in the locking direction, which is very dangerous. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a sliding door and window, which can prevent the handle in the unlocking position from being rotated forcefully by accident.

[0007] To achieve the above-mentioned object, the present invention provides a sliding door and window, comprising a supporting frame, a door and window leaf slidably mounted on the supporting frame, a handle lock mechanism mounted on the door and window leaf, a sliding opening and closing mechanism assembled between the lower end of the door and window leaf and the supporting frame, and a linkage mechanism, wherein the handle lock mechanism comprises a rotatable handle and a transmission shaft fixedly connected to the handle, the linkage mechanism comprises a transmission connecting rod, a connecting arm, a connecting piece, and a linkage rod movably assembled in the door and window leaf, the transmission connecting rod is connected to the transmission shaft and rotates coaxially, the two ends of the connecting arm are respectively hinged to the transmission connecting rod and the connecting piece, the connecting piece is fixed to the linkage rod, the linkage rod is connected to the sliding opening and closing mechanism, and the handle lock mechanism also comprises a first fixed limiter;

[0008] When the handle rotates from the locked position to the unlocked position along the unlocking rotation direction, the transmission shaft and the transmission connecting rod both rotate along the unlocking rotation direction;

[0009] When the handle is rotated to the unlocking position, the first limit member abuts against one side of the transmission connecting rod along the unlocking rotation direction, and the hinge center of the transmission connecting rod and the connecting arm is distributed on the side of the line connecting the rotation center of the transmission connecting rod and the hinge center of the connecting arm and the connecting member close to the first limit member.

[0010] In the sliding doors and windows involved in the present application, when the handle of the handle lock mechanism is turned to the locked position, the sliding opening and closing mechanism is driven to the closed state through the linkage mechanism, and the doors and windows cannot be slid; when the handle of the handle lock mechanism is turned to the unlocked position, the sliding opening and closing mechanism is driven to the open state through the linkage mechanism, and the doors and windows can be slid.

[0011] In particular, when it is necessary to slide the door and window sashes, the handle is rotated from its locked position to the unlocked position along the unlocking rotation direction. After the handle is rotated to the unlocked position, the gravity of the door and window sashes acts on the sliding opening and closing mechanism, and the sliding opening and closing mechanism acts on the linkage rod, so that the linkage rod has a tendency to move downward. The downward movement tendency of the linkage rod is transmitted to the transmission connecting rod through the connecting piece and the connecting arm, so that the transmission connecting rod has a downward movement tendency at the hinge center between it and the connecting arm. Since the hinge centers of the transmission link and the connecting arm are distributed on the side of the line connecting the rotation center of the transmission link and the hinge centers of the connecting arm and the connecting piece that is close to the first limit piece, the downward movement trend of the linkage rod will drive the transmission link to rotate in the direction close to the first limit piece, and the rotation direction is consistent with the unlocking rotation direction, and the transmission link will not be driven to rotate along the locking rotation direction; the first limit piece further limits the transmission link to the extreme position of rotation in the unlocking rotation direction, thereby limiting the transmission link to rotate in the locking rotation direction and further rotate in the unlocking rotation direction after the handle is rotated to the unlocking position, and the transmission link, the transmission shaft and the handle are a linkage structure, which achieves the purpose of limiting the further rotation of the handle after the handle is rotated to the unlocking position, effectively suppressing the handle from being accidentally rotated to the locking position, thereby greatly improving operational safety.

[0012] Furthermore, the linkage mechanism has a simple structure and the transmission is stable and reliable. Through the first limit member and the positional relationship among the rotation center of the transmission connecting rod in the linkage mechanism, the hinge center of the transmission connecting rod and the connecting arm, and the hinge center of the connecting arm and the connecting member, the purpose of suppressing the handle in the unlocking position from being accidentally rotated to the locking position can be achieved. The structure is easy to implement and the cost is low.

[0013] The preferred solution of the above technical solution is: the transmission connecting rod includes a connecting rod main body connected to the transmission shaft, and two connecting rod arms extending from the connecting rod main body, the connecting arms are two, the two connecting rod arms and the two connecting arms are symmetrically distributed along the axial direction of the transmission shaft, one end of the two connecting arms is distributed between the two connecting rod arms and is hinged, and the connecting member is distributed between the other ends of the two connecting arms and is hinged. The structure of the two connecting rod arms being hinged to the two connecting arms increases the strength of the connection structure between the transmission connecting rod and the connecting arm, improves the stability of the force transmission structure, and makes the linkage mechanism durable.

[0014] The preferred solution of the above technical solution is: the transmission connecting rod and the connecting arm are hinged by a first connecting pin, the first connecting pin is parallel to the transmission shaft, the first connecting pin is fixed in the transmission connecting rod and rotatably penetrated in the connecting arm, thereby hinged the transmission connecting rod and the connecting arm. The structure is simple, easy to implement and low in cost.

[0015] The preferred scheme of the above technical scheme is: the connecting arm and the connecting member are hinged by a second connecting pin, the second connecting pin is parallel to the transmission shaft, a connecting slot is provided in the connecting member, the second connecting pin is fixed in the connecting arm and is rotatably and slidably inserted into the connecting slot of the connecting member, thereby hingedly connecting the connecting arm and the connecting member, and the displacement of the connecting member and the linkage rod in the extension direction of the connecting slot is offset by the connecting slot, so that the connecting member and the linkage rod are displaced only in the up and down directions.

[0016] In the above technical solution, the structure in which the connecting member and the linkage rod are fixedly connected is preferably: a connecting protrusion is fixedly provided on the connecting member, a connecting hole corresponding to the connecting protrusion is opened in the linkage rod, and the connecting protrusion is riveted and fixed in the connecting hole, so that the fixation is reliable, thereby improving the reliability of the synchronous movement between the connecting member and the linkage rod.

[0017] The preferred solution of the above technical solution is: the handle lock mechanism also includes a fixed second limiter; when the handle rotates from the unlocked position to the locked position along the locking rotation direction, the second limiter abuts against one side of the transmission connecting rod along the locking rotation direction, thereby limiting the further rotation of the transmission connecting rod after the handle rotates to the locked position. Therefore, the first limiter and the second limiter are combined to limit the rotation range and rotation direction of the transmission connecting rod, and correspondingly limit the rotation range and rotation direction of the handle, so that the handle cannot rotate 360°, and can only rotate bidirectionally between the unlocked position and the locked position within a limited range.

[0018] In the above technical solution, the preferred structure of the sliding opening and closing mechanism is: the sliding opening and closing mechanism includes a roller plate, a roller and a guide wheel rotatably mounted on the roller plate, a sash support frame fixed to the lower end of the door and window sash, a stopper fixed to the sash support frame, and a guide slide groove provided in the sash support frame, the linkage rod is transmission-connected with the roller plate, the guide wheel is slidably arranged in the guide slide groove, and the guide slide groove is a groove extending obliquely relative to the horizontal direction; the support frame has a fixedly arranged track, and the track is distributed on the lower side of the roller and the stopper;

[0019] When the handle is in the unlocking position, the guide wheel is located at the lower end of the guide slot, the roller abuts against the track, and the stopper is separated from the track. At this time, the door and window sash can be slid along the extension direction of the track, and the roller and the track are in rolling cooperation, so that the door and window sash can be easily slid;

[0020] When the handle is in the locked position, the guide wheel is located at the high end of the guide slot, the roller is disengaged from the track, and the stopper abuts against the track. The weight of the door and window sash acts on the track through the stopper, and the door and window sash cannot slide.

[0021] The preferred solution of the above technical solution is that the guide groove is an arc groove. When the handle is in the unlocked position, the guide wheel is located at the bottom of the lower end of the guide groove. After the guide groove adopts the arc groove structure, the horizontal component of the guide wheel at the bottom of the lower end of the arc groove can be reduced, thereby reducing the downward force of the horizontal component of the force transmitted to the linkage rod, and more reliably preventing the handle from being accidentally rotated to the locked position.

[0022] The above technical solution further includes a lifting transmission unit, and the linkage rod is connected to the roller plate through the lifting transmission unit. The preferred structure of the lifting transmission unit is: the lifting transmission unit includes a first connecting rod, a hinge plate, and a second connecting rod, the hinge plate is rotatably mounted on the fan support frame, one end of the first connecting rod is fixedly connected to the linkage rod, and the other end is hinged to the hinge plate, and the two ends of the second connecting rod are respectively hinged to the hinge plate and the roller plate.

[0023] As described above, the sliding door and window according to the present invention has the following beneficial effects:

[0024] In particular, when it is necessary to slide the door and window sashes, the handle is rotated from its locked position to the unlocked position along the unlocking rotation direction. After the handle is rotated to the unlocked position, the gravity of the door and window sashes acts on the sliding opening and closing mechanism, and the sliding opening and closing mechanism acts on the linkage rod, so that the linkage rod has a tendency to move downward. The downward movement tendency of the linkage rod is transmitted to the transmission connecting rod through the connecting piece and the connecting arm, so that the transmission connecting rod has a downward movement tendency at the hinge center between it and the connecting arm. Since the hinge centers of the transmission link and the connecting arm are distributed on the side of the line connecting the rotation center of the transmission link and the hinge centers of the connecting arm and the connecting piece that is close to the first limit piece, the downward movement trend of the linkage rod will drive the transmission link to rotate in the direction close to the first limit piece, and the rotation direction is consistent with the unlocking rotation direction, and the transmission link will not be driven to rotate along the locking rotation direction; the first limit piece further limits the transmission link to the extreme position of rotation in the unlocking rotation direction, thereby limiting the transmission link to rotate in the locking rotation direction and further rotate in the unlocking rotation direction after the handle is rotated to the unlocking position, and the transmission link, the transmission shaft and the handle are a linkage structure, which achieves the purpose of limiting the further rotation of the handle after the handle is rotated to the unlocking position, effectively suppressing the handle from being accidentally rotated to the locking position, thereby greatly improving operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of the sliding door and window in this application, in which the handle is in the locked position.

[0026] Figure 2 for Figure 1 Schematic diagram of the structure after omitting some profiles.

[0027] Figure 3 for Figure 2Schematic diagram of the structure of the sliding opening and closing mechanism and track on the middle right side from another perspective.

[0028] Figure 4 for Figure 3 The schematic diagram of the structure after the rear roller plate is omitted.

[0029] Figure 5 for Figure 2 Schematic diagram of the structure of the middle handle lock mechanism and linkage mechanism from another perspective.

[0030] Figure 6 and Figure 7 for Figure 5 Schematic diagram of the structure at different viewing angles after omitting the lock base and the rear support plate.

[0031] Figure 8 This is a front view of the sliding door and window in this application, in which the handle is in the unlocked position.

[0032] Fig. 9 for Figure 8 Schematic diagram of the structure after omitting some profiles.

[0033] Fig.10 for Fig. 9 Schematic diagram of the structure of the sliding opening and closing mechanism and track on the middle right side from another perspective.

[0034] Fig.11 for Fig.10 The schematic diagram of the structure after the rear roller plate is omitted.

[0035] Fig.12 for Fig. 9 Schematic diagram of the structure of the middle handle lock mechanism and linkage mechanism from another perspective.

[0036] Fig.13 and Fig.14 for Fig.12 Schematic diagram of the structure at different viewing angles after omitting the lock base and the rear support plate.

[0037] Fig.15 for Fig.13 and Fig.14 Front view of the center linkage and front support plate.

[0038] Fig.16 This is the main view of the door and window sash in this application, in which the handle is in the self-locking extreme position.

[0039] Fig.17 for Fig.16 Front view of the center linkage and front support plate.

[0040] Fig.18 This is a schematic diagram of the structure of the linkage mechanism, the front support plate and the rear support plate in this application, which is an exploded view.

[0041] Fig.19 It is a schematic diagram of the structure of the transmission connecting rod in this application.

[0042] Fig. 20 It is a schematic diagram of the structure of the connecting member in this application.

[0043] Fig.21 It is a schematic diagram of the fixing structure of the stopper in the fan support frame in the present application.

[0044] Component number description

[0045] 10 Support frame

[0046] 101 Track

[0047] 102 upper frame profile

[0048] 103 Lower frame profile

[0049] 104 Left outer frame profile

[0050] 105 right outer frame profile

[0051] 20 Doors and windows

[0052] 21 Sash Panel

[0053] 22 Upper sash frame profile

[0054] 23 Lower sash frame profile

[0055] 24 Left sash frame profile

[0056] 25 Right sash frame profile

[0057] 30 Handle lock mechanism

[0058] 31 Handle

[0059] 32 Transmission shaft

[0060] 33 First stopper

[0061] 34 Second limiter

[0062] 35 Lock base

[0063] 36 Front support plate

[0064] 361 First upper protrusion

[0065] 362 First lower protrusion

[0066] 37 Rear support plate

[0067] 371 Second upper protrusion

[0068] 372 Second lower protrusion

[0069] 38 Guide groove

[0070] 40 Sliding opening and closing mechanism

[0071] 41 Roller Plate

[0072] 42 Roller

[0073] 43 Guide wheel

[0074] 44 Fan Support Frame

[0075] 441 Guide chute

[0076] 442 Fastening hole

[0077] 443 Limit boss

[0078] 45 Stopper

[0079] 50 linkage mechanism

[0080] 51 Transmission connecting rod

[0081] 511 Connecting rod body

[0082] 512 Link arm

[0083] 513 Square hole

[0084] 52 Connecting arm

[0085] 53 Connectors

[0086] 531 Connecting chute

[0087] 532 Connecting convex part

[0088] 54 Linkage rod

[0089] 541 Connection hole

[0090] 542 Connection slot

[0091] 55 First connecting pin

[0092] 56 Second connecting pin

[0093] 60 Lifting drive unit

[0094] 61 First connecting rod

[0095] 611 snap-on bump

[0096] 62 hinge plate

[0097] 63 Second connecting rod

[0098] 70 Connecting rod

[0099] 80 Fastening bolt

[0100] W1 Unlock rotation direction

[0101] W2 Lock rotation direction DETAILED DESCRIPTION

[0102] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0103] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by 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. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0104] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0105] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. 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.

[0106] like Figure 1 and Figure 2 As shown, or as Figure 8 and Fig. 9As shown, the present invention provides a sliding door and window, including a support frame 10, a door and window leaf 20, a handle lock mechanism 30, a sliding opening and closing mechanism 40 and a linkage mechanism 50. For the convenience of description, in the following embodiments, the width direction of the sliding door and window is defined as the left-right direction; the thickness direction of the sliding door and window is defined as the front-to-back direction, which is also the indoor and outdoor direction; the height direction of the sliding door and window is defined as the up-down direction. Based on this, Figure 1 and Figure 2 ,as well as Figure 8 and Fig. 9 In the view shown, the left side and the right side of the paper are the left direction and the right direction respectively, the front side and the back side of the paper are the rear direction and the front direction respectively, and the upper side and the lower side of the paper are the upper direction and the lower direction respectively.

[0107] like Figures 1 to 3 As shown, or as Figures 8 to 10 As shown, the support frame 10 is fixedly arranged, and the support frame 10 includes an upper outer frame profile 102 and a lower outer frame profile 103 extending left and right, a left outer frame profile 104 and a right outer frame profile 105 extending up and down, and a track 101 extending left and right, and the track 101 is fixed in the lower outer frame profile 103.

[0108] like Figure 1 and Figure 2 As shown, or as Figure 8 and Fig. 9 As shown, the door and window sash 20 is slidably installed on the support frame 10 along the extension direction of the track 101. The door and window sash 20 includes a window sash frame and a window sash panel 21 in the window sash frame. The window sash frame includes an upper window sash frame profile 22 and a lower window sash frame profile 23 both extending left and right, and a left window sash frame profile 24 and a right window sash frame profile 25 both extending up and down. The window sash panel 21 is usually glass.

[0109] like Figure 1 and Figure 2 As shown, or as Figure 8 and Fig. 9 As shown, the handle lock mechanism 30 is installed on the window frame of the door and window sash 20; in this embodiment, the handle lock mechanism 30 is installed at the middle position of the right window frame profile 25. Figures 5 to 7 As shown, or as Figure 12 to Figure 14As shown, the handle lock mechanism 30 includes a lock base 35, a handle 31, a transmission shaft 32 extending axially in the front and rear directions, and a front support plate 36 and a rear support plate 37 symmetrically arranged in the front and rear directions. The front support plate 36, the rear support plate 37, the lock base 35 and the handle 31 are arranged in sequence from front to back, the lock base 35 is fixed on the rear surface of the right window sash frame profile 25 of the door and window sash 20 by bolts, and the front support plate 36, the rear support plate 37 and the lock base 35 are connected by bolts, so the front support plate 36, the rear support plate 37 and the lock base 35 are all fixedly arranged; at the same time, the front support plate 36 and the rear support plate 37 are arranged in the right window sash frame profile 25 of the door and window sash 20. The handle 31 is rotatably arranged, and the transmission shaft 32 is rotatably supported in the front support plate 36, the rear support plate 37 and the lock base 35. The rear section of the transmission shaft 32 is inserted into the handle 31 and fixedly connected to the handle 31. The user drives the transmission shaft 32 to rotate by rotating the handle 31. The transmission shaft 32 is connected to the sliding opening and closing mechanism 40 through the linkage mechanism 50.

[0110] like Figure 1 and Figure 2 As shown, or as Figure 8 and Fig. 9 As shown, the sliding opening and closing mechanism 40 is assembled between the lower end of the door and window sash 20 and the support frame 10, that is, assembled between the lower window sash frame profile 23 of the door and window sash 20 and the lower outer frame profile 103 of the support frame 10. There is at least one set of sliding opening and closing mechanism 40; in this embodiment, there are two sets of sliding opening and closing mechanism 40 with the same structure, and the two sets of sliding opening and closing mechanism 40 are respectively arranged on the left and right sides of the lower end of the door and window sash 20, and the two sets of sliding opening and closing mechanism 40 are connected by connecting rods 70 extending straightly from left to right. The following takes the sliding opening and closing mechanism 40 distributed on the right side of the lower end of the door and window sash 20 as an example to describe the preferred structure of the sliding opening and closing mechanism 40.

[0111] like Figure 3 and Figure 4 As shown, or as Fig.10 and Fig.11As shown, the sliding opening and closing mechanism 40 includes two roller plates 41 symmetrically arranged front and back, a roller 42 rotatably mounted between the two roller plates 41, a guide wheel 43 rotatably mounted between the two roller plates 41, a sash support frame 44 fixed to the lower end of the lower sash frame profile 23 in the door and window sash 20 by bolts, a stopper 45 fixed to the sash support frame 44, and a guide slot 441 provided in the sash support frame 44. There are two rollers 42, which are arranged side by side on the left and right, and the guide wheel 43 is arranged between the two rollers 42. The central axis of the roller 42 and the central axis of the guide wheel 43 both extend front and back. The roller 42 is arranged on the upper side of the track 101 in the support frame 10 and can contact or separate from the track 101. There are also two stoppers 45, which are arranged side by side. The left stopper 45 is arranged between the guide wheel 43 and the left roller 42, and the right stopper 45 is arranged on the right end side of the right roller 42. The stopper 45 is arranged on the upper side of the track 101 in the support frame 10 and can contact or separate from the track 101. The sash support frame 44 is arranged between the two roller plates 41, and the guide slot 441 passes through the sash support frame 44 in the front-to-back direction. The guide slot 441 is a slot extending obliquely relative to the horizontal direction. In this embodiment, the guide slot 441 extends obliquely downward as it approaches the right sash frame profile 25, that is, the guide slot 441 extends obliquely to the lower right; the guide wheel 43 is slidably arranged in the guide slot 441, and the guide wheel 43 is in rolling contact with the slot wall surface of the guide slot 441. The left end of the roller plate 41 of the right sliding opening and closing mechanism 40 is fixedly connected to the right end of the connecting rod 70 by screws, and the right end of the roller plate 41 of the left sliding opening and closing mechanism 40 is fixedly connected to the left end of the connecting rod 70 by screws, so the roller plates 41 of the two sets of sliding opening and closing mechanisms 40 are fixedly connected by the connecting rod 70.

[0112] like Figure 3 and Figure 4 As shown, or as Fig.10 and Fig.11 As shown, the linkage mechanism 50 has a linkage rod 54 extending straight up and down, and the linkage rod 54 can be movably assembled in the right window frame profile 25 of the door and window 20; the lower end of the linkage rod 54 is transmission connected to the right end of the roller plate 41 of the right sliding opening and closing mechanism 40.

[0113] Furthermore, if Figure 3 and Figure 4 As shown, or as Fig.10 and Fig.11As shown, the sliding door and window further comprises a lifting transmission unit 60, and the lower end of the linkage rod 54 is connected to the roller plate 41 through the lifting transmission unit 60. The preferred structure of the lifting transmission unit 60 is as follows: the lifting transmission unit 60 comprises a first connecting rod 61, a hinge plate 62 and a second connecting rod 63, the hinge plate 62 is rotatably mounted on the sash support frame 44, the upper end of the first connecting rod 61 is fixedly connected to the linkage rod 54, the lower end of the first connecting rod 61 is hinged to the hinge plate 62, and the two ends of the second connecting rod 63 are respectively hinged to the hinge plate 62 and the right end of the roller plate 41; and the hinge points of the hinge plate 62 and the sash support frame 44, the hinge points of the hinge plate 62 and the first connecting rod 61, and the hinge points of the hinge plate 62 and the second connecting rod 63 are distributed in a triangle.

[0114] The handle 31 in the handle lock mechanism 30 has a locked position and an unlocked position, and the handle 31 can rotate between the locked position and the unlocked position. In this embodiment, the locked position of the handle 31 is a position where the handle 31 is vertically facing upward, such as Figure 1 and Figure 2 The unlocked position of the handle 31 is the vertical downward position of the handle 31, as shown Figure 8 and Fig. 9 The rotation direction of the handle 31 from the locked position to the unlocked position is defined as the unlocking rotation direction W1. The unlocking rotation direction W1 is Figure 8 The counterclockwise direction in the figure means that the handle 31 in the locked position is rotated to the lower left. The rotation direction of the handle 31 from the unlocked position upward to the locked position is defined as the locking rotation direction W2. The locking rotation direction W2 is Figure 1 In the clockwise direction of the figure, the handle 31 in the unlocked position is rotated to the upper left. Therefore, the rotation operation of the handle 31 is performed in the left area of ​​the right sash frame profile 25 of the door and window sash 20, and the right sash frame profile 25 of the door and window sash 20 will not interfere with the rotation of the handle 31.

[0115] When the handle 31 in the handle lock mechanism 30 is in Figure 1 and Figure 2 When in the locked position shown in FIG. 1 , the handle 31 causes the linkage rod 54 to be in a low position through the transmission shaft 32. Figure 3 and Figure 4 As shown, the guide wheel 43 is located at the left high end of the guide slot 441, the roller 42 is disengaged from the track 101 upward, and the stopper 45 abuts against the track 101. The weight of the door and window sash 20 acts on the track 101 through the sash support frame 44 and the stopper 45, and the door and window sash 20 cannot slide.

[0116] When the handle 31 in the handle lock mechanism 30 is in Figure 8 and Fig. 9 When in the unlocked position shown in FIG. 1 , the handle 31 causes the linkage rod 54 to be in a high position through the transmission shaft 32. Fig.10 and Fig.11 As shown, the guide wheel 43 is located at the lower right end of the guide groove 441, the roller 42 abuts against the track 101, and the stopper 45 is upwardly disengaged from the track 101. At this time, the door and window sash 20 can be slid along the extension direction of the track 101, and the roller 42 and the track 101 are in a rolling fit, which can easily slide the door and window sash 20.

[0117] In the process of rotating the handle 31 in the handle lock mechanism 30 from the locked position to the unlocked position in the unlocking rotation direction W1, Figure 3 and Figure 4 The linkage rod 54 in the middle moves up from its low position, driving the first connecting rod 61 to move up, and the first connecting rod 61 pulls the roller plate 41 to the right through the hinge plate 62 and the second connecting rod 63, so that the roller plate 41 moves to the right; during the process of the roller plate 41 moving to the right, the guide wheel 43 installed on the roller plate 41 moves to the right with the roller plate 41, but the guide wheel 43 is arranged in a guide slide groove 441 extending obliquely to the lower right, so the guide wheel 43 moves from the upper left end of the guide slide groove 441 to the lower right along the extension direction of the guide slide groove 441, and the roller plate 41 and the roller 42 move to the lower right together with the guide wheel 43, then the roller 42 gradually approaches the track 101 until it abuts against the track 101; thereafter, as the guide wheel 43 continues to move to the lower right in the guide slide groove 441, the fan support frame 44 will be lifted upward, and the stop member 45 will move up synchronously with the fan support frame 44, and the stop member 45 will be separated from the track 101 upward. Therefore, after the handle 31 is rotated to the unlocking position, Fig.10 and Fig.11 As shown, since the roller 42 abuts against the track 101 and the stopper 45 is upwardly disengaged from the track 101, the sliding opening and closing mechanism 40 is in an open state, and the door and window sash 20 can be easily slid left and right through the rolling cooperation between the roller 42 and the track 101.

[0118] In the process of rotating the handle 31 in the handle lock mechanism 30 from the unlocking position to the upper left along the locking rotation direction W2 to the locking position, Fig.10 and Fig.11The linkage rod 54 in the slide moves downward from its high position, driving the first link 61 to move downward, and the first link 61 pushes the roller plate 41 to the left through the hinge plate 62 and the second link 63, causing the roller plate 41 to move left; in the process of the roller plate 41 moving left, the guide wheel 43 moves left along with the roller plate 41, and the guide wheel 43 moves from the lower right end of the guide slot 441 to the upper left along the extension direction of the guide slot 441, and the roller plate 41 and the roller 42 move to the upper left together with the guide wheel 43, and the fan support frame 44 also moves downward relatively, and the stopper 45 moves downward synchronously with the fan support frame 44 until it abuts against the track 101; thereafter, as the guide wheel 43 continues to move to the upper left in the guide slot 441, the roller plate 41 moves upward, and the roller 42 moves upward together with the roller plate 41, and the roller 42 disengages upward from the track 101. Therefore, after the handle 31 is rotated to the locked position, as shown in FIG. Figure 3 and Figure 4 As shown, since the roller 42 is upwardly disengaged from the track 101 and the stopper 45 is abutted against the track 101, the sliding opening and closing mechanism 40 is in a closed state, and the weight of the door and window sash 20 is pressed on the track 101 through the sash support frame 44 and the stopper 45, and the door and window sash 20 cannot be slid left and right.

[0119] In the sliding doors and windows involved in the present application, when the handle 31 of the handle lock mechanism 30 is rotated to the locked position, the sliding opening and closing mechanism 40 is driven to the closed state through the linkage mechanism 50, and the door and window sash 20 cannot be slid; when the handle 31 of the handle lock mechanism 30 is rotated to the unlocked position, the sliding opening and closing mechanism 40 is driven to the open state through the linkage mechanism 50, and the door and window sash 20 can be slid, and the operation is very simple.

[0120] Further, after the handle 31 is rotated to the unlocking position, Fig.11 As shown, the sash support frame 44 is fixed to the lower end of the lower sash frame profile 23 of the door and window sash 20, the sash support frame 44 directly bears the weight of the door and window sash 20, and the guide wheel 43 is inserted into the guide slot 441 of the sash support frame 44. Then, the weight of the door and window sash 20 acts on the guide wheel 43 through the sash support frame 44, so that the guide wheel 43 is subjected to a force F at the lower right end of the guide slot 441. The force F has a downward vertical component F1 and a left horizontal component F2. The left horizontal component F2 makes the guide wheel 43 and the roller plate 41 have a tendency to move leftward, and after being transmitted to the linkage rod 54 through the lifting transmission unit 60, the linkage rod 54 has a tendency to move downward, as shown in FIG. Fig.15 After being transmitted to the transmission shaft 32 and the handle 31 through the linkage mechanism 50, the handle 31 has a movement tendency to rotate to the upper left.

[0121] In order to prevent the handle 31 in the unlocked position from being accidentally bounced up due to the weight of the door and window sash 20, in the present application, the linkage mechanism 50 adopts the following structure.

[0122] like Figures 5 to 7 As shown, or as Figure 12 to Figure 14 As shown, in addition to the linkage rod 54 that can move up and down, the linkage mechanism 50 also includes a transmission link 51, a connecting arm 52 and a connecting member 53. The transmission link 51, the connecting arm 52 and the connecting member 53 are accommodated between the front support plate 36 and the rear support plate 37 of the handle lock mechanism 30, and the linkage rod 54 is arranged on the right side of the connecting member 53; the transmission link 51 is connected to the transmission shaft 32, and the two rotate coaxially, then the rotation center of the transmission link 51 and the transmission shaft 32 is the rotation center of the handle 31, that is, the center of the transmission shaft 32; the two ends of the connecting arm 52 are respectively hinged to the transmission link 51 and the left end of the connecting member 53, and the right end of the connecting member 53 is fixed to the linkage rod 54. At the same time, the handle lock mechanism 30 also includes a fixed first limiter 33.

[0123] When the handle 31 is in the locked position, Figure 6 and Figure 7 As shown in FIG. 1 , the hinge center A1 of the transmission connecting rod 51 and the connecting arm 52 is located below the transmission shaft 32. When the handle 31 is in the unlocked position, Fig.13 and Fig.14 As shown in FIG. 1 , the hinge center A1 of the transmission connecting rod 51 and the connecting arm 52 is located above the transmission rotating shaft 32. Therefore, when the handle 31 is rotated counterclockwise from the locked position to the lower left along the unlocking rotation direction W1 to the unlocking position, as shown in FIG. Fig.13 As shown in FIG. 1 , the transmission link 51 rotates counterclockwise around the transmission shaft 32, and the hinge center A1 of the transmission link 51 and the connecting arm 52 rotates counterclockwise from the lower side of the transmission shaft 32 to the upper right side of the transmission shaft 32, and then drives the linkage rod 54 to move upward through the connecting arm 52 and the connecting member 53, driving the sliding opening and closing mechanism 40 to be in the open state. Conversely, in the process of rotating the handle 31 from the unlocking position to the upper left clockwise along the locking rotation direction W2 to the locking position, as shown in FIG. Figure 6 As shown, the transmission link 51 rotates clockwise with the transmission shaft 32 as the center, and the hinge center A1 of the transmission link 51 and the connecting arm 52 rotates clockwise from the upper side of the transmission shaft 32 to the lower right side of the transmission shaft 32, and then drives the linkage rod 54 to move downward through the connecting arm 52 and the connecting member 53, driving the sliding opening and closing mechanism 40 to be in a closed state. The linkage mechanism 50 has a simple structure and is easy to implement, and the transmission is stable and reliable.

[0124] Further, when the sliding door and window sash 20 needs to be unlocked, the handle 31 is rotated counterclockwise from the locked position to the unlocked position along the unlocking rotation direction W1, such as Figure 12 to Figure 14 As shown in FIG. 1 , the transmission shaft 32 and the transmission connecting rod 51 both rotate counterclockwise along the unlocking rotation direction W1. In particular, when the handle 31 is rotated to the unlocking position, as shown in FIG. Fig.15As shown, the first stopper 33 abuts against the left side (i.e., counterclockwise side) of the transmission link 51 along the unlocking rotation direction W1, and the hinge center A1 of the transmission link 51 and the connecting arm 52 is distributed on the left side of the line connecting the rotation center A2 of the transmission link 51 and the hinge center A3 of the connecting arm 52 and the connecting member 53, close to the first stopper 33, i.e., on the counterclockwise side of the line. More specifically, the hinge center A1 of the transmission link 51 and the connecting arm 52 is defined as the first rotation axis center, the rotation center A2 of the transmission link 51 is defined as the second rotation axis center, and the hinge center A3 of the connecting arm 52 and the connecting member 53 is defined as the third rotation axis center; after the handle 31 is rotated to the unlocking position, the first rotation axis center is configured on the side of the line connecting the second rotation axis center and the third rotation axis center close to the first stopper 33, i.e., on the left side. At the same time, under the action of gravity of the door and window sash 20, the downward movement trend of the linkage rod 54 acts on the transmission link 51 through the connecting piece 53 and the connecting arm 52, so that the hinge center A1 of the transmission link 51 and the connecting arm 52 has a downward movement trend.

[0125] When the handle 31 is in the unlocked position, the present application sets the hinge center A1 of the transmission link 51 and the connecting arm 52 on the counterclockwise side of the line connecting the rotation center A2 of the transmission link 51 and the hinge center A3 of the connecting arm 52 and the connecting member 53 close to the first limit member 33. The downward movement trend of the hinge center A1 of the transmission link 51 and the connecting arm 52 generated by the gravity of the door and window sash 20 will only drive the transmission link 51 to rotate counterclockwise, and will not cause the transmission link 51 to rotate clockwise. At this time, even if the handle 31 is rotated within its loose range in the unlocking position, causing the transmission link 51 to rotate slightly, when the linkage rod 54 is pulled down due to the weight of the door and window sash 20, the linkage rod 54 causes the transmission link 51 to rotate counterclockwise, and the rotation direction is consistent with the unlocking rotation direction W1, that is, the counterclockwise rotation of the transmission link 51 is close to the rotation direction of the first limit member 33, and the first limit member 33 abuts against the counterclockwise side of the transmission link 51, limiting the transmission link 51 to rotate to the extreme position along the unlocking rotation direction W1, thereby limiting further counterclockwise rotation of the transmission link 51. After the clockwise rotation and further counterclockwise rotation of the transmission link 51 are restricted, the transmission link 51, the transmission shaft 32 and the handle 31 are linked structures, so that after the handle 31 is rotated to the unlocked position, the handle 31 rotates within the loose range and the gravity of the door and window sash 20 causes the handle 31 to further rotate and bounce to the upper left, effectively preventing the handle 31 from being accidentally rotated and bounced to the locked position, thereby greatly improving operational safety.

[0126] In summary, the present application can achieve the purpose of suppressing the handle 31 in the unlocking position from being accidentally rotated to the locking position by means of the first limit member 33, and the positional relationship among the rotation center A2 of the transmission link 51 in the linkage mechanism 50, the hinge center A1 of the transmission link 51 and the connecting arm 52, and the hinge center A3 of the connecting arm 52 and the connecting member 53. The structure is easy to implement and the cost is low.

[0127] Furthermore, the linkage mechanism 50 in the present application can make the handle 31 self-locking when it rotates counterclockwise to the unlocked position, as long as the hinge center A1 of the transmission link 51 and the connecting arm 52 is on the counterclockwise side of the line connecting the rotation center A2 of the transmission link 51 and the hinge center A3 of the connecting arm 52 and the connecting member 53, the handle 31 can be self-locked and the purpose of suppressing the handle 31 from rotating strongly to the locked position and bouncing up can be achieved. Fig.17 As shown, when the hinge center A1 of the transmission link 51 and the connecting arm 52 is on the line connecting the rotation center A2 of the transmission link 51 and the hinge center A3 of the connecting arm 52 and the connecting member 53, that is, when the hinge center A1 of the transmission link 51 and the connecting arm 52, the rotation center A2 of the transmission link 51, and the hinge center A3 of the connecting arm 52 and the connecting member 53 are collinear, the handle 31 is in the self-locking limit position, and the handle 31 is slightly deflected to the left, as shown in FIG. Fig.16 As shown, the clockwise rotation of the transmission link 51 can also be suppressed at this time. In this embodiment, the leftward deflection angle of the handle 31 when the handle 31 is in the self-locking limit position is set to 7°. Therefore, even if the handle 31 rotates clockwise from the unlocking position to the locking direction within an angle of 7°, it is within the self-locking range of the handle 31 and will not cause the handle 31 to bounce upward due to the weight of the door and window sash 20.

[0128] Furthermore, if Figure 4 and Fig.11 As shown, the guide groove 441 is a circular arc groove, and the groove wall at the lower right end of the circular arc groove is close to a horizontal curve extending left and right. Fig.11 As shown, the guide wheel 43 is located at the bottom of the right lower end of the guide slot 441. The guide slot 441 with an arc slot structure can reduce the horizontal component force F2 that the guide wheel 43 is subjected to at the bottom of the right lower end of the arc slot due to the weight of the door and window sash 20, thereby reducing the downward pulling force of the horizontal component force F2 transmitted to the linkage rod 54 through the lifting transmission unit 60, thereby reducing the force that causes the hinge center A1 of the transmission connecting rod 51 and the connecting arm 52 to move downward due to the gravity of the door and window sash 20, and more reliably preventing the handle 31 from being accidentally rotated to the locked position.

[0129] Furthermore, if Fig.11 and Fig.21As shown, the bolts for fixing the sash support frame 44 and the lower sash frame profile 23 are defined as fastening bolts 80. A fastening hole 442 for accommodating the fastening bolt 80 is provided in the sash support frame 44. The fastening hole 442 passes through the sash support frame 44 from top to bottom, and a limiting boss 443 is integrally provided on the inner wall of the lower section of the fastening hole 442. During assembly, the fastening bolt 80 is first inserted into the fastening hole 442, and the sash support frame 44 is fixed to the lower end of the sash frame profile 23, so that the head of the lower end of the fastening bolt 80 abuts against the limiting boss 443; then, the stopper 45 is pressed into the lower end of the fastening hole 442, and the stopper 45 is interference-fitted with the lower section of the fastening hole 442, thereby fixing the stopper 45 to the lower end of the sash support frame 44. Preferably, the stopper 45 is a resin part, which is convenient for pressing into the lower end of the fastening hole 442, and can protect the aluminum profile rail 101 when the resin stopper 45 abuts against the rail 101. The lower end surface of the stopper 45 is an arc surface, which is adapted to the top surface of the rail 101, so that the stopper 45 and the rail 101 are in surface contact when in abutment, with a larger contact surface, thereby improving the reliability of the closing function of the sliding opening and closing mechanism 40.

[0130] Furthermore, if Fig.13 , Fig.14 , Fig.18 and Fig.19 As shown, the transmission connecting rod 51 includes a connecting rod main body 511 and two connecting rod arms 512 extending integrally from the connecting rod main body 511. The connecting rod main body 511 is connected to the transmission shaft 32 for torque transmission. The two connecting rod arms 512 are symmetrically distributed front and back along the axial direction of the transmission shaft 32. There are two connecting arms 52, and the two connecting arms 52 are also symmetrically distributed front and back along the axial direction of the transmission shaft 32. The lower ends of the two connecting arms 52 are distributed between the two connecting rod arms 512, and the lower ends of the two connecting arms 52 are coaxially hinged with the two connecting rod arms 512. The connecting piece 53 is distributed between the upper ends of the two connecting arms 52, and the upper ends of the two connecting arms 52 are coaxially hinged with the connecting piece 53. The structure of the two connecting rod arms 512 being hinged with the two connecting arms 52 increases the strength of the connection structure between the transmission connecting rod 51 and the connecting arm 52, improves the stability of the force transmission structure, and makes the linkage mechanism 50 durable.

[0131] Furthermore, the connection structure between the transmission connecting rod 51 and the transmission shaft 32 is preferably: Fig.13 , Fig.14 , Fig.18 and Fig.19As shown, the transmission connecting rod 51 has a square hole 513 extending from front to back in the connecting rod main body 511, the transmission rotating shaft 32 is a square shaft, the profile of the front section of the transmission rotating shaft 32 matches the profile of the square hole 513, and the front end of the transmission rotating shaft 32 is inserted into the square hole 513 of the transmission connecting rod 51. In this way, when the handle 31 is turned to rotate the transmission rotating shaft 32, the transmission rotating shaft 32 will drive the transmission connecting rod 51 to rotate synchronously, reliably transmit torque, and realize the linkage of rotation.

[0132] Furthermore, the hinge structure of the transmission connecting rod 51 and the connecting arm 52 is preferably: Fig.13 , Fig.14 , Fig.18 and Fig.19 As shown, the link arm portion 512 of the transmission link 51 and the lower end of the connecting arm 52 are hinged by a first connecting pin 55. The first connecting pin 55 is parallel to the transmission shaft 32 and extends axially forward and backward. The first connecting pin 55 is fixed in the transmission link 51 and rotatably penetrated in the connecting arm 52, thereby hinged (i.e., rotatably connected) the transmission link 51 and the connecting arm 52. This structure is simple, easy to implement and low in cost.

[0133] Furthermore, the hinge structure of the connecting arm 52 and the connecting member 53 is preferably: Fig.13 , Fig.14 , Fig.18 and Fig. 20 As shown, the upper end of the connecting arm 52 is hinged to the connecting member 53 through the second connecting pin 56, the second connecting pin 56 is parallel to the transmission shaft 32 and extends axially forward and backward, and a connecting slot 531 extending left and right is provided in the connecting member 53, and the extending direction of the connecting slot 531 is perpendicular to the moving direction of the linkage rod 54, and the second connecting pin 56 is rotatably inserted in the connecting arm 52 and clamped in the connecting slot 531 of the connecting member 53, thereby hinged (i.e., rotatably connected) the connecting arm 52 and the connecting member 53. Preferably, the front support plate 36 and the rear support plate 37 are both provided with a guide slot 38 extending up and down, and the front and rear ends of the second connecting pin 56 are rotatably and slidably inserted in the guide slot 38 of the front support plate 36 and the guide slot 38 of the rear support plate 37, and the guide slot 38 limits the left and right movement of the second connecting pin 56, so that the connecting member 53 and the linkage rod 54 are only displaced in the up and down direction, and not in the left and right direction. In addition, in the front-to-back direction, the connecting member 53 is clamped between the upper ends of the two connecting arms 52, thereby limiting the front-to-back displacement of the connecting member 53, so that the connecting member 53 can only be displaced in the up-and-down direction.

[0134] Preferably, the connecting slot 531 passes through the connecting member 53 to the left. During assembly, the transmission connecting rod 51, the first connecting pin 55, the connecting arm 52 and the second connecting pin 56 are assembled first, and then the connecting member 53 is fixedly connected to the linkage rod 54, and finally the connecting member 53 is clamped on the second connecting pin 56 through the left end of the connecting slot 531, thereby facilitating the assembly of the linkage mechanism 50.

[0135] Furthermore, the structure in which the connecting member 53 is fixedly connected to the linkage rod 54 is preferably: Fig.14 , Fig.18 and Fig. 20 As shown, the right end side of the connecting member 53 integrally extends to the right with two connecting protrusions 532, and the two connecting protrusions 532 are arranged side by side up and down; two connecting holes 541 corresponding to the connecting protrusions 532 are provided in the linkage rod 54, and the connecting holes 541 pass through the linkage rod 54 from left to right; the connecting protrusions 532 are riveted and fixed in the connecting holes 541, thereby fixing the connecting member 53 and the linkage rod 54 in a reliable manner, thereby improving the reliability of the synchronous movement between the connecting member 53 and the linkage rod 54.

[0136] Furthermore, the structure in which the linkage rod 54 is fixedly connected to the first link 61 is preferably: Figure 4 and Fig.11 As shown, the front and rear edges of the lower end of the linkage rod 54 are provided with connecting slots 542 that pass through the left and right sides, and the front and rear sides of the upper end of the first connecting rod 61 are provided with rightwardly protruding clamping protrusions 611 that are clamped in the connecting slots 542.

[0137] Furthermore, if Figure 6 and Fig.13 As shown, the handle lock mechanism 30 also includes a fixed second stopper 34. When the handle 31 rotates counterclockwise along the unlocking rotation direction W1 to the unlocking position, as shown in FIG. Fig.13 As shown in FIG. 1 , the connecting rod arm 512 of the transmission connecting rod 51 abuts against the first limiting member 33 on its counterclockwise side to achieve rotation limiting when unlocking. When the handle 31 rotates clockwise along the locking rotation direction W2 to the locking position, as shown in FIG. Figure 6 As shown, the link arm 512 of the transmission link 51 abuts against the second limiter 34 on its clockwise side to achieve rotation limitation when locked. Therefore, the first limiter 33 and the second limiter 34 are combined to limit the rotation range and rotation direction of the transmission link 51, and accordingly limit the rotation range and rotation direction of the handle 31, so that the handle 31 cannot rotate 360 ​​degrees, and can only rotate bidirectionally between the unlocking position and the locking position within a limited range.

[0138] Preferably, the structure of the first limiter 33 is as follows: Fig.12 , Fig.13 and Fig.18As shown, when the handle 31 is in the unlocked position, the link arm 512 of the transmission link 51 rotates upward to the upper side of the transmission shaft 32, and the front support plate 36 is integrally provided with a first upper protrusion 361 protruding backward on the left side of the front link arm 512, and the rear support plate 37 is integrally provided with a second upper protrusion 371 protruding forward on the left side of the rear link arm 512. The first upper protrusion 361 and the second upper protrusion 371 respectively abut against the left sides of the front and rear link arms 512 to limit the link arm 512 from further rotating counterclockwise, and the first upper protrusion 361 and the second upper protrusion 371 constitute a first limit member 33.

[0139] Preferably, the structure of the second limiting member 34 is as follows: Figure 5 , Figure 6 and Fig.18 As shown, when the handle 31 is in the locked position, the link arm 512 of the transmission link 51 rotates downward to the lower side of the transmission shaft 32, and the front support plate 36 is integrally provided with a first lower protrusion 362 protruding backward on the left side of the front link arm 512, and the rear support plate 37 is integrally provided with a second lower protrusion 372 protruding forward on the left side of the rear link arm 512. The first lower protrusion 362 and the second lower protrusion 372 respectively abut against the left sides of the front and rear link arms 512 to limit the link arm 512 from further rotating clockwise, and the first lower protrusion 362 and the second lower protrusion 372 constitute a second limiting member 34.

[0140] Therefore, the first stopper 33 is arranged directly above the second stopper 34 .

[0141] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0142] 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 familiar with 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 a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A sliding door and window, comprising a supporting frame (10), a door and window leaf (20) slidably mounted on the supporting frame (10), a handle lock mechanism (30) mounted on the door and window leaf (20), a sliding opening and closing mechanism (40) mounted between the lower end of the door and window leaf (20) and the supporting frame (10), and a linkage mechanism (50), wherein the handle lock mechanism (30) comprises a rotatable handle (31) and a transmission shaft (32) fixedly connected to the handle (31), characterized in that: The linkage mechanism (50) comprises a transmission connecting rod (51), a connecting arm (52), a connecting piece (53), and a linkage rod (54) which is movably mounted in the door and window sash (20) up and down, the transmission connecting rod (51) is connected to the transmission rotating shaft (32) and rotates coaxially, the two ends of the connecting arm (52) are respectively hinged to the transmission connecting rod (51) and the connecting piece (53), the connecting piece (53) is fixed to the linkage rod (54), the linkage rod (54) is connected to the sliding opening and closing mechanism (40), and the handle lock mechanism (30) further comprises a first position limiting piece (33) which is fixedly arranged; When the handle (31) rotates from the locked position to the unlocked position along the unlocking rotation direction (W1), the transmission shaft (32) and the transmission connecting rod (51) both rotate along the unlocking rotation direction (W1); When the handle (31) is rotated to the unlocking position, the first limiting member (33) abuts against one side of the transmission connecting rod (51) along the unlocking rotation direction (W1), and the hinge center (A1) of the transmission connecting rod (51) and the connecting arm (52) is distributed on the side of the line connecting the rotation center (A2) of the transmission connecting rod (51) and the hinge center (A3) of the connecting arm (52) and the connecting member (53) close to the first limiting member (33).

2. The sliding door and window according to claim 1, characterized in that: The transmission connecting rod (51) comprises a connecting rod main body (511) connected to the transmission shaft (32), and two connecting rod arm parts (512) extending from the connecting rod main body (511), there are two connecting arms (52), the two connecting rod arm parts (512) and the two connecting arms (52) are symmetrically distributed along the axial direction of the transmission shaft (32), one end of the two connecting arms (52) is distributed between the two connecting rod arm parts (512) and is hinged, and the connecting member (53) is distributed between the other ends of the two connecting arms (52) and is hinged.

3. The sliding door and window according to claim 1, characterized in that: The transmission connecting rod (51) and the connecting arm (52) are hinged via a first connecting pin (55), the first connecting pin (55) is parallel to the transmission rotating shaft (32), the first connecting pin (55) is fixed in the transmission connecting rod (51) and rotatably penetrates the connecting arm (52).

4. The sliding door and window according to claim 1, characterized in that: The connecting arm (52) and the connecting member (53) are hingedly connected via a second connecting pin (56), the second connecting pin (56) is parallel to the transmission shaft (32), a connecting slide groove (531) is provided in the connecting member (53), the second connecting pin (56) is fixed in the connecting arm (52), and is rotatably and slidably inserted into the connecting slide groove (531) of the connecting member (53).

5. The sliding door and window according to claim 1, characterized in that: The connecting piece (53) is fixedly provided with a connecting protrusion (532), the linkage rod (54) is provided with a connecting hole (541) corresponding to the connecting protrusion (532), and the connecting protrusion (532) is riveted and fixed in the connecting hole (541).

6. The sliding door and window according to claim 1, characterized in that: The handle lock mechanism (30) further comprises a second position-limiting member (34) which is fixedly arranged; when the handle (31) rotates from an unlocked position to a locked position along a locking rotation direction (W2), the second position-limiting member (34) abuts against one side of the transmission connecting rod (51) along the locking rotation direction (W2).

7. The sliding door and window according to claim 1, characterized in that: The sliding opening and closing mechanism (40) comprises a roller plate (41), a roller (42) and a guide wheel (43) rotatably mounted on the roller plate (41), a sash support frame (44) fixed at the lower end of the door and window sash (20), a stopper (45) fixed to the sash support frame (44), and a guide slot (441) provided in the sash support frame (44); the linkage rod (54) is transmission-connected with the roller plate (41); the guide wheel (43) is slidably inserted into the guide slot (441); the guide slot (441) is a slot extending obliquely relative to the horizontal direction; the support frame (10) has a fixedly arranged track (101); the track (101) is distributed below the roller (42) and the stopper (45); When the handle (31) is located at the unlocking position, the guide wheel (43) is located at the lower end of the guide slot (441), the roller (42) abuts against the track (101), and the stopper (45) is separated from the track (101); When the handle (31) is located at the locking position, the guide wheel (43) is located at the high end of the guide slot (441), the roller (42) is separated from the track (101), and the stopper (45) abuts against the track (101).

8. The sliding door and window according to claim 7, characterized in that: The guide sliding groove (441) is a circular arc groove.

9. The sliding door and window according to claim 7, characterized in that: It also includes a lifting transmission unit (60), which includes a first connecting rod (61), a hinge plate (62) and a second connecting rod (63). The hinge plate (62) is rotatably mounted on the fan support frame (44). One end of the first connecting rod (61) is fixedly connected to the linkage rod (54), and the other end is hinged to the hinge plate (62). The two ends of the second connecting rod (63) are respectively hinged to the hinge plate (62) and the roller plate (41).

Images