A sliding door and window

Abstract

The application provides a sliding door and window, which comprises a supporting frame, a door and window leaf slidably installed on the supporting frame, a handle lock mechanism installed 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, the handle lock mechanism comprises a handle, a transmission rotating shaft and a first limiting piece, 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 with the transmission rotating shaft and rotates coaxially, the two ends of the connecting arm are hingedly connected with the transmission connecting rod and the connecting piece respectively, the connecting piece is fixed with the linkage rod, when the handle is rotated to an unlocking position, the first limiting piece abuts against one side of the transmission connecting rod in an unlocking rotating direction, the hinged center of the transmission connecting rod and the connecting arm is distributed on the side of the line connecting the rotating center of the transmission connecting rod and the hinged center of the connecting arm and the connecting piece, and the handle in the unlocking position is prevented from being forcibly rotated to a locking position by accident.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, and in particular to a sliding door and window. Background Technology

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

[0003] Typically, sliding doors and windows include a support frame, a door / window sash slidably mounted on the support frame, a handle / lock mechanism mounted on the door / window sash, a sliding opening / closing mechanism assembled between the lower end of the door / window sash and the support frame, and a linkage mechanism drivingly connected between the handle / lock mechanism and the sliding opening / closing mechanism, such as a device for lifting the opening and closing of sliding doors and windows disclosed in Chinese invention patent application publication number CN101068997A.

[0004] Furthermore, the support frame has tracks distributed on the lower 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, rollers and guide wheels rotatably mounted on the roller plate, a sash support frame fixed to the lower end of the door / window sash, a stop fixed to the sash support frame, and a guide groove formed in the sash support frame. The guide wheels are slidably fitted in the guide groove, allowing relative movement between the roller plate and the sash support frame in the vertical direction. When the handle in the handle lock mechanism is rotated to the unlock position, the handle lock mechanism, through the linkage mechanism, puts the sliding opening and closing mechanism into the open state. At this time, the guide wheel is at the lowest end of the guide groove, the roller is in contact with the track, and the stop disengages upward from the track, allowing the door / window sash to slide 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 closes the sliding opening and closing mechanism through the linkage mechanism. At this time, the guide wheel is at the highest end of the guide groove, the stop is in contact with the track, the roller moves upward away from the track, and the weight of the door and window sash presses down on the track through the stop, so the door and window sash cannot slide.

[0005] In the aforementioned sliding doors and windows, since the sash support frame is fixed to the lower end of the door / window sash, the weight of the sash always acts on the guide rollers through the support frame. This force has vertical and horizontal components. The horizontal component acts on the linkage mechanism through the roller plate, giving the linkage mechanism a constant tendency to move. This tendency is consistent with the direction of movement of the linkage mechanism as the handle rotates from the unlocked position to the locked position. Therefore, when the handle is in the unlocked position, as the handle rotates within its loose range, it will cause the linkage mechanism to move slightly. However, under the influence of the weight of the door / window sash, the linkage mechanism always has a tendency to move in the same direction as the locking direction. This makes it very easy for the linkage mechanism to move further in the locking direction, which could lead to the handle being accidentally and forcefully rotated in the locking direction, posing a significant danger. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a sliding door / window that can prevent the handle in the unlocking position from being accidentally and forcefully rotated.

[0007] To achieve the above objectives, the present invention provides a sliding door / window, including a support frame, a door / window sash slidably mounted on the support frame, a handle lock mechanism mounted on the door / window sash, a sliding opening / closing mechanism assembled between the lower end of the door / window sash and the support frame, and a linkage mechanism. The handle lock mechanism includes a rotatable handle and a transmission shaft fixedly connected to the handle. The linkage mechanism includes a transmission link, a connecting arm, a connecting member, and a linkage rod movably mounted in the door / window sash. The transmission link is connected to the transmission shaft and rotates coaxially. The two ends of the connecting arm are respectively hinged to the transmission link and the connecting member. The connecting member is fixed to the linkage rod. The linkage rod is connected to the sliding opening / closing mechanism. The handle lock mechanism also includes a fixedly installed first limiting member.

[0008] When the handle rotates from the locked position to the unlocked position in the unlocking rotation direction, both the transmission shaft and the transmission link rotate in the unlocking rotation direction.

[0009] When the handle is rotated to the unlock position, the first limiting member abuts against one side of the transmission link along the unlocking rotation direction. The first hinge center of the transmission link and the connecting arm is located on the side of the line connecting the rotation center of the transmission link and the second hinge center of the connecting arm and the connecting member that is close to the first limiting member.

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

[0011] In particular, when sliding door and window sashes are required, the handle is rotated from its locked position to the unlocked position in the unlocking rotation direction. After the handle is rotated to the unlocked position, the gravity of the door and window sash acts on the sliding opening and closing mechanism, which in turn acts on the linkage rod, causing the linkage rod to have a downward movement tendency. The downward movement tendency of the linkage rod is transmitted to the transmission link through the connector and the connecting arm, causing the transmission link to have a downward movement tendency at its first hinge center with the connecting arm. Since the first hinge center of the transmission link and the connecting arm is located on the side of the line connecting the rotation center of the transmission link and the second hinge center of the connecting arm and the connecting piece closer to the first limiting member, the downward movement of the linkage will drive the transmission link to rotate towards the first limiting member. This rotation direction is consistent with the unlocking rotation direction, and will not cause the transmission link to have a rotational drive along the locking rotation direction. The first limiting member also limits the transmission link to the limit position of rotation along the unlocking rotation direction, thereby limiting the transmission link to rotate along the locking rotation direction and further rotating along the unlocking rotation direction after the handle is rotated to the unlock position. Since the transmission link, the transmission shaft and the handle are linked, the purpose of limiting the handle to rotate further after the handle is rotated to the unlock position is achieved, effectively suppressing the handle from being accidentally and forcefully rotated to the locking position, and greatly improving operational safety.

[0012] Furthermore, the linkage mechanism has a simple structure and stable and reliable transmission. By considering the positional relationship between the first limiting member, the rotation center of the transmission link in the linkage mechanism, the first hinge center of the transmission link and the connecting arm, and the second hinge center of the connecting arm and the connecting member, it is possible to prevent the handle in the unlocked position from being accidentally and forcefully rotated to the locked position. The structure is easy to implement and has low cost.

[0013] A preferred embodiment of the above technical solution is as follows: the transmission linkage includes a linkage body connected to the transmission shaft, and two linkage arms extending from the linkage body. There are two connecting arms, and the two linkage arms and the two connecting arms are symmetrically distributed along the axial direction of the transmission shaft. One end of each connecting arm is located between the two linkage arms and is hinged. The connecting member is located between the other ends of the two connecting arms and is also hinged. This hinged structure between the two linkage arms and the two connecting arms increases the strength of the connection structure between the transmission linkage and the connecting arms, improves the stability of the force transmission structure, and makes the linkage mechanism durable.

[0014] The preferred embodiment of the above technical solution is as follows: the transmission link 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 link and rotatably passes through the connecting arm, thereby hinged the transmission link and the connecting arm. This structure is simple, easy to implement, and low in cost.

[0015] The preferred embodiment of the above technical solution is as follows: the connecting arm and the connecting member are hinged by a second connecting pin, the second connecting pin is parallel to the transmission shaft, the connecting member has a connecting groove, the second connecting pin is fixed in the connecting arm and rotatably and slidably passes through the connecting groove of the connecting member, thereby hinged 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 groove is offset by the connecting groove, so that the connecting member and the linkage rod only have displacement in the vertical direction.

[0016] In the above technical solution, the preferred structure for the connection between the connector and the linkage rod is as follows: a connecting protrusion is fixedly provided on the connector, and a connecting hole corresponding to the connecting protrusion is opened in the linkage rod. The connecting protrusion is riveted and fixed in the connecting hole, which is reliable and improves the reliability of synchronous movement between the connector and the linkage rod.

[0017] A preferred embodiment of the above technical solution is as follows: the handle lock mechanism further includes a fixedly mounted second limiting member; when the handle rotates from the unlocked position to the locked position along the locking rotation direction, the second limiting member abuts against one side of the transmission link along the locking rotation direction, thereby restricting further rotation of the transmission link after the handle rotates to the locked position. Therefore, the combination of the first and second limiting members restricts the rotation range and direction of the transmission link, which in turn restricts the rotation range and direction of the handle, preventing the handle from rotating 360° and limiting its rotation to bidirectional rotation between the unlocked and locked positions within a limited range.

[0018] In the above technical solution, the preferred structure of the sliding opening and closing mechanism is as follows: the sliding opening and closing mechanism includes a roller plate, rollers and guide wheels rotatably mounted on the roller plate, a sash support frame fixed to the lower end of the door / window sash, a stop member fixed to the sash support frame, and a guide groove formed in the sash support frame. The linkage rod is drivenly connected to the roller plate, and the guide wheel is slidably inserted in the guide groove. The guide groove is a groove that extends at an inclination relative to the horizontal direction. The support frame has a fixedly set track, which is distributed on the lower side of the rollers and the stop member.

[0019] When the handle is in the unlocked position, the guide wheel is located at the lower end of the guide groove, the roller abuts against the track, and the stop is disengaged 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 a rolling engagement, which allows the door and window sash to be slid easily.

[0020] When the handle is in the locked position, the guide wheel is at the high end of the guide groove, the roller is disengaged from the track, and the stop is abutting against the track. The weight of the door and window sash is then applied to the track through the stop, making it impossible for the door and window sash to slide.

[0021] The preferred embodiment 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. By adopting an arc groove structure, the horizontal component of the force on the guide wheel at the bottom of the arc groove can be reduced, thereby reducing the downward force transmitted from this horizontal component to the linkage rod, and more reliably preventing the handle from being accidentally and forcefully rotated to the locked position.

[0022] The above technical solution also includes a lifting transmission unit, and the linkage rod is connected to the roller plate through the lifting transmission unit. A preferred structure of the lifting transmission unit is as follows: 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. Both ends of the second connecting rod are hinged to the hinge plate and the roller plate, respectively.

[0023] As described above, the sliding doors and windows of the present invention have the following beneficial effects:

[0024] In particular, when sliding door and window sashes are required, the handle is rotated from its locked position to the unlocked position in the unlocking rotation direction. After the handle is rotated to the unlocked position, the gravity of the door and window sash acts on the sliding opening and closing mechanism, which in turn acts on the linkage rod, causing the linkage rod to have a downward movement tendency. The downward movement tendency of the linkage rod is transmitted to the transmission link through the connector and the connecting arm, causing the transmission link to have a downward movement tendency at its first hinge center with the connecting arm. Since the first hinge center of the transmission link and the connecting arm is located on the side of the line connecting the rotation center of the transmission link and the second hinge center of the connecting arm and the connecting piece closer to the first limiting member, the downward movement of the linkage will drive the transmission link to rotate towards the first limiting member. This rotation direction is consistent with the unlocking rotation direction, and will not cause the transmission link to have a rotational drive along the locking rotation direction. The first limiting member also limits the transmission link to the limit position of rotation along the unlocking rotation direction, thereby limiting the transmission link to rotate along the locking rotation direction and further rotating along the unlocking rotation direction after the handle is rotated to the unlock position. Since the transmission link, the transmission shaft and the handle are linked, the purpose of limiting the handle to rotate further after the handle is rotated to the unlock position is achieved, effectively suppressing the handle from being accidentally and forcefully rotated to the locking position, and greatly improving operational safety. Attached Figure Description

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

[0026] Figure 2 for Figure 1 Structural diagram with some profiles omitted.

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

[0028] Figure 4 for Figure 3 A schematic diagram of the structure omitting the rear roller plate.

[0029] Figure 5 for Figure 2 A schematic diagram of the center handle locking mechanism and linkage mechanism from another perspective.

[0030] Figure 6 and Figure 7 for Figure 5 Structural diagrams from different perspectives, omitting the lock base and rear support plate.

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

[0032] Figure 9 for Figure 8 Structural diagram with some profiles omitted.

[0033] Figure 10 for Figure 9 A schematic diagram of the sliding opening and closing mechanism and track on the right side from another perspective.

[0034] Figure 11 for Figure 10 A schematic diagram of the structure omitting the rear roller plate.

[0035] Figure 12 for Figure 9 A schematic diagram of the center handle locking mechanism and linkage mechanism from another perspective.

[0036] Figure 13 and Figure 14 for Figure 12 Structural diagrams from different perspectives, omitting the lock base and rear support plate.

[0037] Figure 15 for Figure 13 and Figure 14 Front view of the central linkage mechanism and the front support plate.

[0038] Figure 16 This is a front view of the door / window sash in this application, in which the handle is in the self-locking limit position.

[0039] Figure 17 for Figure 16 Front view of the central linkage mechanism and the front support plate.

[0040] Figure 18This is an exploded view of the linkage mechanism, front support plate, and rear support plate in this application.

[0041] Figure 19 This is a schematic diagram of the transmission connecting rod in this application.

[0042] Figure 20 This is a schematic diagram of the connector structure in this application.

[0043] Figure 21 This is a schematic diagram of the fixing structure of the stopper in the fan support frame in this application.

[0044] Component designation explanation

[0045] 101 track 102 Upper outer frame profile 103 Lower outer frame profile 104 Left outer frame profile 105 Right outer frame profile 20 Door and window sash 21 Window panel 22 Upper window sash frame profile 23 Lower window sash frame profile 24 Left window sash frame profile 25 Right window sash frame profile 30 Handle lock mechanism 31 handle 32 Transmission shaft 33 First limiting component 34 Second limiting component 35 Lock base 36 Front support plate 361 First upper lateral protrusion 362 First lower lateral protrusion 37 Rear support plate 371 Second upper lateral protrusion 372 Second lower lateral protrusion 38 Guide groove 40 Sliding opening and closing mechanism 41 roller plate 42 roller 43 guide wheel 44 Fan support frame 441 Guide chute 442 Fastening hole 443 Limiting boss 45 Stop 50 Linkage mechanism 51 Transmission connecting rod 511 Connecting rod body 512 Linkage arm 513 square hole 52 Connecting arm 53 connector 531 Connecting slide 532 Connecting protrusion 54 Linkage rod 541 Connection hole 542 Connecting card slot 55 First connecting pin 56 Second connecting pin 60 Lifting transmission unit 61 First link 611 Snap-fit ​​bump 62 Hinges 63 Second link 70 Connecting rod 80 Fastening bolts W1 Unlock rotation direction W2 Lock the rotation direction Detailed Implementation

[0046] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0047] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and objectives of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0048] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0049] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0050] like Figure 1 and Figure 2 As shown, or as Figure 8 and Figure 9 As shown, the present invention provides a sliding door and window, including a support frame 10, a door / window sash 20, a handle lock mechanism 30, a sliding opening and closing mechanism 40, and a linkage mechanism 50. For ease 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-back direction, which is also the direction between the interior and exterior; and 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 Figure 9 In the view shown, the left and right sides of the paper are the left and right directions, the front and back sides are the back and front directions, and the top and bottom sides are the top and bottom directions.

[0051] like Figures 1 to 3 As shown, or as Figures 8 to 10 As shown, the support frame 10 is fixedly installed. The support frame 10 includes an upper outer frame profile 102 and a lower outer frame profile 103 that extend to the left and right, a left outer frame profile 104 and a right outer frame profile 105 that extend to the top and bottom, and a track 101 that extends to the left and right. The track 101 is fixed inside the lower outer frame profile 103.

[0052] like Figure 1 and Figure 2 As shown, or as Figure 8 and Figure 9 As shown, the door and window sash 20 is slidably mounted 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 within the window sash frame. The window sash frame includes an upper window sash frame profile 22 and a lower window sash frame profile 23 extending to the left and right, and a left window sash frame profile 24 and a right window sash frame profile 25 extending to the right and down. The window sash panel 21 is usually made of glass.

[0053] like Figure 1 and Figure 2 As shown, or as Figure 8 and Figure 9 As shown, the handle lock mechanism 30 is installed on the window sash frame of the door / window sash 20; in this embodiment, the handle lock mechanism 30 is installed at the middle position of the right window sash frame profile 25. Figures 5 to 7 As shown, or as Figures 12 to 14 As 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, rear support plate 37, lock base 35, and handle 31 are distributed sequentially from front to back. The lock base 35 is fixed to the rear surface of the right window sash frame profile 25 of the door / window sash 20 by bolts. The front support plate 36, rear support plate 37, and lock base 35 are fixedly connected by bolts, thus all three are fixedly installed. Simultaneously, the front support plate 36 and rear support plate 37 are located within the right window sash frame profile 25 of the door / window sash 20. The handle 31 is rotatably mounted, 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 part 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.

[0054] like Figure 1 and Figure 2 As shown, or as Figure 8 and Figure 9 As shown, the sliding opening and closing mechanism 40 is assembled between the lower end of the door / window sash 20 and the supporting frame 10, that is, between the lower window sash frame profile 23 of the door / window sash 20 and the lower outer frame profile 103 of the supporting frame 10. There is at least one set of sliding opening and closing mechanisms 40; in this embodiment, there are two sets of sliding opening and closing mechanisms 40 with identical structures. The two sets of sliding opening and closing mechanisms 40 are respectively located on the left and right sides of the lower end of the door / window sash 20, and are connected by connecting rods 70 extending horizontally to the left and right. The preferred structure of the sliding opening and closing mechanism 40 will be described below using the sliding opening and closing mechanism 40 located on the right side of the lower end of the door / window sash 20 as an example.

[0055] like Figure 3 and Figure 4 As shown, or as Figure 10 and Figure 11As shown, the sliding opening and closing mechanism 40 includes two roller plates symmetrically arranged front and rear, rollers 42 rotatably mounted between the two roller plates 41, guide wheels 43 rotatably mounted between the two roller plates 41, a sash support frame 44 bolted to the lower end of the lower sash frame profile 23 in the door and window sash 20, a stop 45 fixed to the sash support frame 44, and a guide groove 441 formed in the sash support frame 44. There are two rollers 42 arranged side-by-side, and the guide wheels 43 are distributed between the two rollers 42. The central axes of both the rollers 42 and the guide wheels 43 extend front and rear. The rollers 42 are located above the track 101 in the support frame 10 and can contact or separate from the track 101. There are two stoppers 45, arranged side by side. The left stopper 45 is located between the guide wheel 43 and the left roller 42, and the right stopper 45 is located on the right end of the right roller 42. The stoppers 45 are located above the track 101 in the support frame 10 and can contact or separate from the track 101. The sash support frame 44 is set between two roller plates 41. The guide groove 441 passes through the sash support frame 44 in the front-to-back direction. The guide groove 441 is a groove that extends at an inclination relative to the horizontal direction. In this embodiment, the guide groove 441 extends at an inclination that is lower and closer to the right sash frame profile 25, that is, the guide groove 441 extends at an inclination to the lower right. The guide wheel 43 can slide through the guide groove 441, and the guide wheel 43 and the groove wall of the guide groove 441 are in rolling contact. 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. Thus, the roller plates 41 of the two sets of sliding opening and closing mechanisms 40 are fixedly connected by the connecting rod 70.

[0056] like Figure 3 and Figure 4 As shown, or as Figure 10 and Figure 11 As shown, the linkage mechanism 50 has a linkage rod 54 that extends vertically. The linkage rod 54 is mounted vertically within the right window sash frame profile 25 of the door / window sash 20. The lower end of the linkage rod 54 is connected to the right end of the roller plate 41 of the right sliding opening and closing mechanism 40.

[0057] Furthermore, such as Figure 3 and Figure 4 As shown, or as Figure 10 and Figure 11As shown, the sliding door and window also includes 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 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 sash support frame 44. The upper end of the first connecting rod 61 is fixedly connected to the linkage rod 54, and the lower end of the first connecting rod 61 is hinged to the hinge plate 62. The two ends of the second connecting rod 63 are respectively hinged to the right ends of the hinge plate 62 and the roller plate 41. Furthermore, 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 triangularly distributed.

[0058] 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 the position where the handle 31 is vertically upward, such as... Figure 1 and Figure 2 As shown; the unlock position of the handle 31 is when the handle 31 is vertically downward, as shown. Figure 8 and Figure 9 As shown. The direction of rotation of handle 31 from the locked position to the unlocked position is defined as the unlocking rotation direction W1. This unlocking rotation direction W1 is... Figure 8 In the view, a counter-clockwise direction means rotating the handle 31 to the lower left when it is in the locked position. The direction of rotation of the handle 31 from the unlocked position upwards to the locked position is defined as the locking rotation direction W2. This locking rotation direction W2 is... Figure 1 In the view, rotating the handle 31 in the unlocked position clockwise is equivalent to rotating it to the upper left. Therefore, the rotation of the handle 31 is performed within the left side area of ​​the right window frame profile 25 of the door / window sash 20, and the right window frame profile 25 of the door / window sash 20 does not interfere with the rotation of the handle 31.

[0059] When the handle 31 in the handle lock mechanism 30 is in Figure 1 and Figure 2 When the locking position is shown, the handle 31, through the transmission shaft 32, keeps the linkage rod 54 in the low position, such as... Figure 3 and Figure 4 As shown, the guide wheel 43 is located at the high left side of the guide groove 441, the roller 42 is disengaged from the track 101, and the stop 45 abuts against the track 101. The weight of the door and window sash 20 is applied to the track 101 through the sash support frame 44 and the stop 45, so the door and window sash 20 cannot slide.

[0060] When the handle 31 in the handle lock mechanism 30 is in Figure 8 and Figure 9 When the handle 31 is in the unlocked position as shown, the linkage rod 54 is in the high position via the transmission shaft 32, such as... Figure 10 and Figure 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 stop 45 disengages upward from the track 101. At this time, the door and window sash 20 can slide 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.

[0061] During 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 to the lower left, the process is as follows: Figure 3 and Figure 4 The linkage 54 moves upward from its low position, driving the first linkage 61 to move upward. The first linkage 61 pulls the roller plate 41 to the right through the hinge plate 62 and the second linkage 63, causing the roller plate 41 to move to the right. During the rightward movement of the roller plate 41, the guide wheel 43 installed on the roller plate 41 moves to the right with the roller plate 41. However, the guide wheel 43 is located in the guide groove 441 that extends downward to the right. Therefore, the guide wheel 43 moves downward to the right from the upper left end of the guide groove 441 along the extension direction of the guide groove 441. The roller plate 41 and the roller 42 move downward to the right together with the guide wheel 43. The roller 42 gradually approaches the track 101 until it abuts against the track 101. Afterward, as the guide wheel 43 continues to move downward to the right in the guide groove 441, it will lift the fan support frame 44 upward. The stop 45 moves upward synchronously with the fan support frame 44 and disengages from the track 101. Therefore, after the handle 31 is rotated to the unlocked position, as Figure 10 and Figure 11 As shown, since the roller 42 abuts against the track 101 and the stop 45 moves upward away from the track 101, the sliding opening and closing mechanism 40 is in the open state. Through the rolling cooperation between the roller 42 and the track 101, the door and window sash 20 can be easily slid left and right.

[0062] During the process of rotating the handle 31 in the handle lock mechanism 30 from the unlock position to the locked position along the locking rotation direction W2 to the upper left, Figure 10 and Figure 11The linkage 54 moves down from its high position, driving the first linkage 61 down. The first linkage 61 pushes the roller plate 41 to the left through the hinge plate 62 and the second linkage 63, causing the roller plate 41 to move to the left. During the leftward movement of the roller plate 41, the guide wheel 43 moves to the left along with the roller plate 41. The guide wheel 43 moves from the lower right end of the guide groove 441 along the extension direction of the guide groove 441 to the upper left. 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 moves down relatively. The stop 45 moves down synchronously with the fan support frame 44 until it abuts against the track 101. Afterward, as the guide wheel 43 continues to move to the upper left in the guide groove 441, the roller plate 41 moves up, and the roller 42 moves up with the roller plate 41, and the roller 42 moves upward and disengages from the track 101. Therefore, after the handle 31 is turned to the locked position, as Figure 3 and Figure 4 As shown, since the roller 42 is disengaged from the track 101 and the stop 45 is abutting against the track 101, the sliding opening and closing mechanism 40 is in the closed state. The weight of the door and window sash 20 is pressed onto the track 101 by the sash support frame 44 and the stop 45, and the door and window sash 20 cannot slide left or right.

[0063] In the sliding door and window involved in this application, when the handle 31 of the handle lock mechanism 30 is turned to the locked position, the sliding opening and closing mechanism 40 is driven to the closed state by 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 turned to the unlocked position, the sliding opening and closing mechanism 40 is driven to the open state by the linkage mechanism 50, and the door and window sash 20 can be slid, which is very convenient to operate.

[0064] Furthermore, after the handle 31 is rotated to the unlocked position, as... Figure 11 As shown, the sash support frame 44 is fixed to the lower end of the lower sash frame profile 23 of the window sash 20. The sash support frame 44 directly bears the weight of the window sash 20. The guide wheel 43 passes through the guide groove 441 of the sash support frame 44. The weight of the window sash 20 is transmitted to the guide wheel 43 through the sash support frame 44, causing the guide wheel 43 to be subjected to a force F at the lower right end of the guide groove 441. This force F has a downward vertical component F1 and a leftward horizontal component F2. The leftward horizontal component F2 causes the guide wheel 43 and the roller plate 41 to have a tendency to move to the left. After being transmitted to the linkage rod 54 through the lifting transmission unit 60, the linkage rod 54 has a tendency to move downward. Figure 15 As shown; after being transmitted to the transmission shaft 32 and handle 31 through the linkage mechanism 50, the handle 31 has a tendency to rotate to the upper left.

[0065] To prevent the handle 31 in the unlocking position from being accidentally popped up by the weight of the door / window sash 20, the linkage mechanism 50 in this application adopts the following structure.

[0066] like Figures 5 to 7 As shown, or as Figures 12 to 14 As shown, in addition to the aforementioned movable linkage rod 54, the linkage mechanism 50 also includes a transmission link 51, a connecting arm 52, and a connecting member 53. The transmission link 51, connecting arm 52, and connecting member 53 are housed between the front support plate 36 and the rear support plate 37 of the handle lock mechanism 30. The linkage rod 54 is positioned to the right of the connecting member 53. The transmission link 51 is connected to the transmission shaft 32, and both rotate coaxially. Therefore, the rotation center of the transmission link 51 and the transmission shaft 32 is the rotation center of the handle 31, which is also the center of the transmission shaft 32. The two ends of the connecting arm 52 are hinged to the left ends of the transmission link 51 and the connecting member 53, respectively, and the right end of the connecting member 53 is fixed to the linkage rod 54. Simultaneously, the handle lock mechanism 30 also includes a fixedly installed first limiting member 33.

[0067] When handle 31 is in the locked position, such as Figure 6 and Figure 7 As shown, the first hinge center A1 of the transmission link 51 and the connecting arm 52 is located on the lower side of the transmission shaft 32. When the handle 31 is in the unlocked position, as... Figure 13 and Figure 14 As shown, the first hinge center A1 of the transmission link 51 and the connecting arm 52 is located on the upper side of the transmission shaft 32. Therefore, during the process of rotating the handle 31 counterclockwise from the locked position to the unlocked position along the unlocking rotation direction W1, as... Figure 13 As shown, the transmission link 51 rotates counterclockwise around the transmission shaft 32. The first 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 side of the transmission shaft 32, thereby driving the linkage rod 54 upward through the connecting arm 52 and the connecting piece 53, thus driving the sliding opening and closing mechanism 40 to the open state. Conversely, during the process of rotating the handle 31 clockwise from the unlocked position to the locked position along the locking rotation direction W2, as... Figure 6 As shown, the transmission link 51 rotates clockwise around the transmission shaft 32. The first 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 side of the transmission shaft 32, thereby driving the linkage rod 54 downward through the connecting arm 52 and the connecting piece 53, thus driving the sliding opening and closing mechanism 40 to the closed state. This linkage mechanism 50 has a simple structure, is easy to implement, and provides stable and reliable transmission.

[0068] Furthermore, when it is necessary to unlock the sliding door / window sash 20, the handle 31 rotates counterclockwise from the locked position to the unlocked position along the unlocking rotation direction W1, as follows: Figures 12 to 14 As shown, both the transmission shaft 32 and the transmission link 51 rotate counterclockwise along the unlocking rotation direction W1. Specifically, when the handle 31 is rotated to the unlock position, as... Figure 15As shown, the first limiting member 33 abuts against the left side (i.e., counterclockwise side) of the transmission link 51 along the unlocking rotation direction W1. The first hinge center A1 of the transmission link 51 and the connecting arm 52 is located on the left side of the line connecting the rotation center A2 of the transmission link 51 and the second hinge center A3 of the connecting arm 52 and the connecting member 53, i.e., on the counterclockwise side of the line. More specifically, the first 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 second 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 unlock position, the first rotation axis center is located on the side of the line connecting the second and third rotation axis centers that is close to the first limiting member 33, i.e., the left side. At the same time, under the action of gravity of the door and window sash 20, the downward movement tendency of the linkage rod 54 is successively acted on the transmission link 51 through the connector 53 and the connecting arm 52, so that the first hinge center A1 of the transmission link 51 and the connecting arm 52 has a downward movement tendency.

[0069] With the handle 31 in the unlocked position, this application sets the first 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 second hinge center A3 of the connecting arm 52 and the connecting member 53, close to the first limiting member 33. Then, the downward movement tendency of the transmission link 51 and the connecting arm 52 at the first hinge center A1 caused 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 rotates within its loose range in the unlocked position, causing the transmission link 51 to rotate slightly, the weight of the door / window sash 20 will cause the linkage rod 54 to rotate counterclockwise when it is pulled down. This 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 limiting member 33. The first limiting member 33 abuts against the counterclockwise side of the transmission link 51, limiting the transmission link 51 to the limit position of rotation along the unlocking rotation direction W1, thereby limiting the 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. This achieves the purpose of the handle 31 rotating further to the upper left and popping up after it is rotated to the unlock position due to the looseness of the handle 31 and the gravity of the door and window sash 20. This effectively prevents the handle 31 from being accidentally rotated and popped up to the locked position, greatly improving the safety of operation.

[0070] In summary, this application achieves the purpose of preventing the handle 31 in the unlocked position from being accidentally and forcefully rotated to the locked position by the positional relationship between the first limiting member 33, the rotation center A2 of the transmission link 51 in the linkage mechanism 50, the first hinge center A1 of the transmission link 51 and the connecting arm 52, and the second hinge center A3 of the connecting arm 52 and the connecting member 53. The structure is easy to implement and has low cost.

[0071] Furthermore, the linkage mechanism 50 in this application can have a self-locking function when the handle 31 is rotated counterclockwise to the unlocked position. This is achieved as long as the first 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 second hinge center A3 of the connecting arm 52 and the connecting member 53. This ensures that the handle 31 can be self-locked and prevents it from forcefully rotating and springing back to the locked position. Figure 17 As shown, when the first 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 second hinge center A3 of the connecting arm 52 and the connecting member 53, that is, when the first hinge center A1 of the transmission link 51 and the connecting arm 52, the rotation center A2 of the transmission link 51, and the second 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. Figure 16 As shown, clockwise rotation of the transmission linkage 51 can also be suppressed at this time. In this embodiment, the angle of leftward deflection of the handle 31 when it is in the self-locking limit position is set to 7°. Therefore, even if the handle 31 rotates clockwise from the unlocked position to the locking direction by less than 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.

[0072] Furthermore, such as Figure 4 and Figure 11 As shown, the guide groove 441 is an arc-shaped groove, and the groove wall at the lower right end of this arc-shaped groove is close to the horizontal curve extending to the left and right. Thus, when the handle 31 is in the unlocked position, as... Figure 11 As shown, the guide wheel 43 is located at the bottom of the guide groove 441 at the lower right end. The guide groove 441 with its arc groove structure can reduce the horizontal component force F2 on the guide wheel 43 at the bottom of the arc groove due to the weight of the door and window sash 20. This reduces the downward pulling force of the horizontal component force F2 transmitted to the linkage rod 54 through the lifting transmission unit 60, and also reduces the downward force of the first hinge center A1 of the transmission link 51 and the connecting arm 52 due to the gravity of the door and window sash 20. This more reliably prevents the handle 31 from being accidentally and forcefully rotated to the locked position.

[0073] Furthermore, such as Figure 11 and Figure 21As shown, the bolts fixing the sash support frame 44 and the lower sash frame profile 23 are defined as fastening bolts 80. The sash support frame 44 has a fastening hole 442 for accommodating the fastening bolt 80. The fastening hole 442 extends vertically through the sash support frame 44, 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. The head of the lower end of the fastening bolt 80 then abuts against the limiting boss 443. Next, the stop 45 is pressed into the lower end of the fastening hole 442. The stop 45 is interference-fitted with the lower section of the fastening hole 442, thereby fixing the stop 45 to the lower end of the sash support frame 44. Preferably, the stop 45 is made of resin, which facilitates pressing into the lower end of the fastening hole 442, and protects the aluminum profile track 101 when the resin stop 45 abuts against it. The lower end surface of the stop 45 is an arc surface, which fits the top surface of the track 101, so that the stop 45 and the track 101 have a surface contact fit when they abut, providing a larger contact surface and improving the reliability of the closing function of the sliding opening and closing mechanism 40.

[0074] Furthermore, such as Figure 13 , Figure 14 , Figure 18 and Figure 19 As shown, the transmission link 51 includes a link body 511 and two link arms 512, both integrally extending from the link body 511. The link body 511 is connected to the transmission shaft 32 for torque transmission. The two link arms 512 are symmetrically distributed front-to-back along the axial direction of the transmission shaft 32. There are two connecting arms 52, which are also symmetrically distributed front-to-back along the axial direction of the transmission shaft 32. The lower ends of the two connecting arms 52 are located between the two link arms 512 and are coaxially hinged to them. Connecting members 53 are located between the upper ends of the two connecting arms 52 and are coaxially hinged to them. The structure of the two link arms 512 and the two connecting arms 52 being hinged together increases the strength of the connection structure between the transmission link 51 and the connecting arms 52, improves the stability of the force transmission structure, and makes the linkage mechanism 50 durable.

[0075] Furthermore, the preferred connection structure between the transmission connecting rod 51 and the transmission shaft 32 is as follows: Figure 13 , Figure 14 , Figure 18 and Figure 19As shown, the transmission connecting rod 51 has a through square hole 513 in its main body 511. The transmission shaft 32 is a square shaft, and the contour of the front part of the transmission shaft 32 matches the contour of the square hole 513. The front end of the transmission shaft 32 is inserted into the square hole 513 of the transmission connecting rod 51. Thus, when the handle 31 is turned to rotate the transmission shaft 32, the transmission shaft 32 will drive the transmission connecting rod 51 to rotate synchronously, reliably transmitting torque and realizing the rotational linkage.

[0076] Furthermore, the hinge structure between the transmission link 51 and the connecting arm 52 is preferably as follows: Figure 13 , Figure 14 , Figure 18 and Figure 19 As shown, the lower ends of the connecting arm 512 and the connecting arm 52 of the transmission connecting rod 51 are hinged by the first connecting pin 55. The first connecting pin 55 is parallel to the transmission shaft 32 and extends axially back and forth. The first connecting pin 55 is fixed in the transmission connecting rod 51 and rotatably passes through the connecting arm 52, thereby hinged (i.e., rotatably connected) the transmission connecting rod 51 and the connecting arm 52. This structure is simple, easy to implement, and low in cost.

[0077] Furthermore, the hinge structure between the connecting arm 52 and the connecting member 53 is preferably as follows: Figure 13 , Figure 14 , Figure 18 and Figure 20 As shown, the upper end of the connecting arm 52 is hinged to the connecting member 53 via a second connecting pin 56. The second connecting pin 56 is parallel to the transmission shaft 32 and extends axially in both directions. The connecting member 53 has a connecting groove 531 extending to the left and right. The extension direction of the connecting groove 531 is perpendicular to the movement direction of the linkage rod 54. The second connecting pin 56 is rotatably inserted into the connecting arm 52 and engaged in the connecting groove 531 of the connecting member 53, thereby hinged (i.e., rotatably connected) the connecting arm 52 and the connecting member 53. Preferably, both the front support plate 36 and the rear support plate 37 have guide grooves 38 extending vertically. The front and rear ends of the second connecting pin 56 are rotatably and slidably inserted into the guide grooves 38 of the front support plate 36 and the rear support plate 37. The guide grooves 38 restrict the left and right movement of the second connecting pin 56, so that the connecting member 53 and the linkage rod 54 only have displacement in the vertical direction and no displacement in the left and right direction. In addition, in the front-back direction, the connector 53 is positioned between the upper ends of the two connecting arms 52, thereby restricting the front-back displacement of the connector 53 and allowing the connector 53 to only move in the vertical direction.

[0078] Preferably, the connecting groove 531 extends to the left through the connecting member 53. 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. Then, the connecting member 53 is fixedly connected to the linkage rod 54. Finally, the connecting member 53 is secured to the second connecting pin 56 through the left end of its connecting groove 531, thereby facilitating the assembly of the linkage mechanism 50.

[0079] Furthermore, the preferred structure for the fixed connection between the connector 53 and the linkage rod 54 is as follows: Figure 14 , Figure 18 and Figure 20 As shown, two connecting protrusions 532 extend integrally to the right from the right end of the connector 53, and the two connecting protrusions 532 are arranged side by side vertically. Two connecting holes 541 corresponding to the connecting protrusions 532 are opened 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 connector 53 and the linkage rod 54 together, and the fixation is reliable, improving the reliability of synchronous movement between the connector 53 and the linkage rod 54.

[0080] Furthermore, the preferred structure for the fixed connection between the linkage 54 and the first linkage 61 is as follows: Figure 4 and Figure 11 As shown, the front and rear edges of the lower end of the linkage rod 54 are provided with connecting slots 542 that extend from left to right, and the front and rear sides of the upper end of the first connecting rod 61 are provided with locking protrusions 611 that protrude to the right, and the locking protrusions 611 are locked in the connecting slots 542.

[0081] Furthermore, such as Figure 6 and Figure 13 As shown, the handle lock mechanism 30 also includes a fixedly mounted second limiting member 34. When the handle 31 is rotated counterclockwise along the unlocking rotation direction W1 to the unlock position, as... Figure 13 As shown, the connecting arm 512 of the transmission link 51 abuts against the first limiting member 33 on its counterclockwise side, achieving rotational limitation during unlocking. When the handle 31 is rotated clockwise along the locking rotation direction W2 to the locked position, as... Figure 6 As shown, the link arm 512 of the transmission link 51 abuts against the second limiting member 34 on its clockwise side, thereby limiting rotation during locking. Therefore, the combination of the first limiting member 33 and the second limiting member 34 restricts the rotation range and direction of the transmission link 51, which in turn restricts the rotation range and direction of the handle 31, preventing the handle 31 from rotating 360° and limiting its rotation to bidirectional movement between the unlocked and locked positions within a defined range.

[0082] Preferably, the structure of the first limiting member 33 is as follows: Figure 12 , Figure 13 and Figure 18As shown, when the handle 31 is in the unlocked position, the connecting arm 512 of the transmission link 51 rotates upward to the upper side of the transmission shaft 32. The front support plate 36 has a first upper protrusion 361 protruding backward on the left side of the front connecting arm 512, and the rear support plate 37 has a second upper protrusion 371 protruding forward on the left side of the rear connecting arm 512. The first upper protrusion 361 and the second upper protrusion 371 abut against the left side of the front and rear connecting arms 512 respectively, restricting the connecting arm 512 from rotating further counterclockwise. The first upper protrusion 361 and the second upper protrusion 371 constitute the first limiting member 33.

[0083] Preferably, the structure of the second limiting member 34 is as follows: Figure 5 , Figure 6 and Figure 18 As shown, when the handle 31 is in the locked position, the connecting arm 512 of the transmission link 51 rotates downward to the lower side of the transmission shaft 32. The front support plate 36 has a first lower side protrusion 362 protruding backward on the left side of the front connecting arm 512, and the rear support plate 37 has a second lower side protrusion 372 protruding forward on the left side of the rear connecting arm 512. The first lower side protrusion 362 and the second lower side protrusion 372 abut against the left side of the front and rear connecting arms 512 respectively, restricting the connecting arm 512 from rotating further clockwise. The first lower side protrusion 362 and the second lower side protrusion 372 constitute the second limiting member 34.

[0084] Therefore, the first limiting member 33 is located directly above the second limiting member 34.

[0085] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0086] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can 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 those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A sliding door / window, comprising a support frame (10), a door / window sash (20) slidably mounted on the support frame (10), a handle lock mechanism (30) mounted on the door / window sash (20), a sliding opening / closing mechanism (40) assembled between the lower end of the door / window sash (20) and the support 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) includes a transmission link (51), a connecting arm (52), a connecting piece (53), and a linkage rod (54) that can be moved up and down in the door and window sash (20). The transmission link (51) is connected to the transmission shaft (32) and rotates coaxially. The two ends of the connecting arm (52) are respectively hinged to the transmission link (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). The handle lock mechanism (30) also includes a first limiting piece (33) that is fixedly set. When the handle (31) rotates from the locked position to the unlocked position in the unlocking rotation direction (W1), the transmission shaft (32) and the transmission link (51) both rotate in the unlocking rotation direction (W1); When the handle (31) is rotated to the unlock position, the first limiting member (33) abuts against one side of the transmission link (51) along the unlock rotation direction (W1). The first hinge center (A1) of the transmission link (51) and the connecting arm (52) is located on the side of the line connecting the rotation center (A2) of the transmission link (51) and the second 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 link (51) includes a link body (511) connected to the transmission shaft (32) and two link arms (512) extending from the link body (511). There are two connecting arms (52). The two link arms (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 located between the two link arms (512) and is hinged. The connecting member (53) is located 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 link (51) and the connecting arm (52) are hinged by a first connecting pin (55). The first connecting pin (55) is parallel to the transmission shaft (32). The first connecting pin (55) is fixed in the transmission link (51) and rotatably passes through the connecting arm (52).

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

5. The sliding door and window according to claim 1, characterized in that: The connector (53) is fixed with a connecting protrusion (532), and the linkage rod (54) is provided with a connecting hole (541) corresponding to the connecting protrusion (532). 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) also includes a fixedly installed second limiting member (34); when the handle (31) rotates from the unlocked position to the locked position along the locking rotation direction (W2), the second limiting member (34) abuts against one side of the transmission link (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) includes a roller plate (41), rollers (42) and guide wheels (43) rotatably mounted on the roller plate (41), a sash support frame (44) fixed to the lower end of the door / window sash (20), a stop (45) fixed to the sash support frame (44), and a guide groove (441) opened in the sash support frame (44). The linkage rod (54) is connected to the roller plate (41) in a transmission. The guide wheel (43) is slidably inserted in the guide groove (441). The guide groove (441) is a groove that extends at an inclination relative to the horizontal direction. The support frame (10) has a fixed track (101) which is distributed on the lower side of the rollers (42) and the stop (45). When the handle (31) is in the unlocked position, the guide wheel (43) is located at the lower end of the guide groove (441), the roller (42) abuts against the track (101), and the stop (45) is disengaged from the track (101). When the handle (31) is in the locked position, the guide wheel (43) is at the high end of the guide groove (441), the roller (42) is disengaged from the track (101), and the stop (45) abuts against the track (101).

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