Sash assembly and out-swinging door window

Abstract

The application relates to a window sash assembly and an out-opening door window, which comprises a window frame, a window sash and an operation transmission device arranged on the window sash, the window frame is provided with a sealing rubber strip used for being pressed and combined with the window sash, and the window sash is provided with a cavity, and the operation transmission device has a first state and a second state; when the operation transmission device is in the first state, the operation transmission device is retracted into the cavity, and when the window sash is rotationally matched relative to the window frame, the operation transmission device avoids the sealing rubber strip. As known from the above, the window sash assembly provided by the application is designed as a structure that the operation transmission device can be retracted into the cavity of the window sash, contact and friction with the sealing rubber strip are avoided when the window sash is rotated, a multi-point locking mechanism is used to improve the sealing performance, the operation transmission device is prevented from being exposed to cause component rust and aging, the transmission components are prevented from being scratched and worn by the sealing rubber strip, and the sealing performance and service life of the door window are improved.

Description

Technical Field

[0001] This application relates to the field of door and window manufacturing technology, and more specifically, to a window sash assembly and an outward-opening door and window. Background Technology

[0002] As a core component of outward-opening doors and windows, the structural design of window sash assemblies directly affects the performance and lifespan of these doors and windows. Currently, common window sash assemblies on the market generally suffer from the following technical defects: First, the operating transmission mechanism is usually exposed, with handles, transmission boxes, and locking rods directly exposed to the external environment. This not only affects the overall aesthetics of the doors and windows but also leads to long-term exposure of the transmission components to rain, dust, and other harsh environments, accelerating the corrosion and aging of metal parts. Second, during the opening and closing of doors and windows, the exposed transmission components are prone to rubbing against the sealing strips on the window frame. This mechanical friction not only makes opening and closing doors and windows feel stiff but also severely wears down the sealing strips, leading to a gradual decline in sealing performance. To solve this problem, some products have opted to eliminate the sealing strip design, but this introduces new problems such as a significant reduction in the airtightness and watertightness of the doors and windows. Furthermore, the traditional locking mechanism design of window sash assemblies also has significant shortcomings. Single-point locking methods cannot guarantee the overall stability of the doors and windows, while multi-point locking mechanisms are often complex in structure and laborious to operate. These technical defects severely restrict the performance improvement and market competitiveness of outward-opening doors and windows. Utility Model Content

[0003] The purpose of this application is to provide a window sash assembly and outward-opening doors and windows that solve the above-mentioned technical defects.

[0004] This application provides a window sash assembly, the technical solution of which is as follows: The window sash assembly includes: a window frame, a window sash pivotally connected to the window frame, and an operating transmission device disposed on the window sash. The window frame is provided with a sealing strip for pressing against the window sash. The window sash has a cavity, and the operating transmission device has a first state and a second state. When the operating transmission device is in the first state, the operating transmission device retracts into the cavity, so that when the window sash rotates relative to the window frame, the operating transmission device avoids the sealing strip.

[0005] Furthermore, this application also proposes that the operating transmission device includes a handle, a transmission box connected to the handle, a locking rod connected to the transmission box, and a locking tongue connected to the locking rod; a lock seat is provided on the window frame, and the lock seat has a slot; when the operating transmission device is in the second state, the locking tongue is engaged with the slot; when the operating transmission device is in the first state, the locking tongue is disengaged from the slot.

[0006] Furthermore, this application also proposes that the handle is rotatably connected to the window sash, and the handle switches between the first and second states of the operating transmission device by rotation.

[0007] Furthermore, this application also proposes that the transmission box has a built-in gear set, and the handle transmits torque to the gear set through the square steel linkage. The gear set drives the locking rod to control the locking tongue to move back to the reset position. The back-to-reset position of the locking tongue is used for the locking tongue to engage / disengage from the slot.

[0008] Furthermore, this application also proposes that the operating transmission device includes multiple locking tongues, and multiple locking seats are provided on the window frame, with each locking seat having a slot that corresponds to and engages with each locking tongue.

[0009] Furthermore, this application also proposes that the operating transmission device includes two locking tongues, and two locking seats are provided on the window frame, each locking seat having a slot that corresponds to and engages with each locking tongue.

[0010] Furthermore, this application also proposes that the gear set drives the locking rod to move horizontally relative to the window sash.

[0011] Furthermore, this application also proposes that the locking rod drives the locking tongue to move vertically relative to the window sash.

[0012] Furthermore, this application also proposes that the sealing strip is an EPDM sealing strip and that the sealing strip is pressurized between the window sash and the window frame.

[0013] This application also proposes that outward-opening doors and windows include the aforementioned window sash assembly.

[0014] According to the above technical solution, the window sash assembly and outward-opening doors and windows provided in this application, by designing the operating transmission device as a structure that can be retracted into the window sash cavity, avoid contact and friction with the sealing strip when the window sash rotates. At the same time, the multi-point locking mechanism improves the sealing performance. It has the advantages of avoiding the exposure of the operating transmission device, which would lead to the corrosion and aging of the components, preventing the transmission components from scratching and wearing with the sealing strip, and improving the sealing performance and service life of the doors and windows. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of the window sash assembly operation transmission device in the first state.

[0016] Figure 2 This is a schematic diagram of the structure of the window sash assembly operation transmission device in the second state.

[0017] The markings in the diagram are: 100. Window sash, 101. Cavity, 102. Operating transmission device, 1021. Handle, 1022. Transmission box, 1023. Locking rod, 1024. Locking tongue, 103. Sealing strip, 110. Door and window glass; Window frame, 201. Lock seat, 202. Card slot. Detailed Implementation

[0018] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In existing technologies, window sash assemblies are widely used in outward-opening doors and windows. They typically employ an operating transmission mechanism to achieve opening and closing, and a sealing strip is installed between the window sash and the window frame. In traditional structures, the exposed transmission components cause the window sash to rub against the sealing strip when rotating, resulting in increased opening and closing resistance and accelerated strip wear. Some solutions eliminate the sealing strip altogether to avoid rubbing, but this sacrifices the door and window's sealing performance. Exposed transmission components also pose advantages such as susceptibility to corrosion and compromised aesthetic appearance. To address the aforementioned technical challenges and the conflict between the transmission components and the sealing strip, a design approach integrating the transmission mechanism into the window sash is proposed. Analysis of the mechanical motion trajectory revealed spatial overlap between the transmission components and the sealing strip during window sash rotation. Based on this, a cavity structure capable of housing the transmission components was constructed, along with a dual-state switching mechanism: during window sash rotation, the transmission components are fully retracted into the cavity; during the locking phase, they extend to perform their function. As one of the typical embodiments of this application, reference is made to Figure 1 and Figure 2 This application proposes a window sash assembly, including a window frame 200 and a window sash 100 pivotally connected to the window frame 200. The window sash 100 is made of aluminum profile or other suitable metal or alloy profile. A window glass 110 is installed on the window sash 100. A single window glass 110 can be installed, or two window glass 110s can be installed to form a double-glazed window sash. Figure 1 , Figure 2As shown, an operating transmission device 102 is provided on the window sash 100. A sealing strip 103 for pressing against the window sash 100 is provided on the window frame 200. The window sash 100 has a cavity. The operating transmission device 102 has a first state and a second state. When the operating transmission device 102 is in the first state, it retracts into the cavity, allowing the operating transmission device 102 to avoid the sealing strip 103 when the window sash 100 rotates relative to the window frame 200. The cavity refers to a hollow structure located inside the window sash 100, which can be achieved by profile extrusion molding or modular assembly. Its internal space dimensions must meet the requirements for complete retraction of the operating transmission device 102. The dual-state switching of the operating transmission device 102 refers to controlling its overall position change through a mechanical linkage mechanism, which can be achieved using gear transmission or a linkage mechanism. In the first state, the entire device is displaced into the cavity. Specifically, when the window sash 100 needs to be rotated, the operating transmission device 102 switches to the first state, and all its mechanical parts retract into the cavity through the linkage mechanism. During the rotation of the window sash 100 around the pivot point, the previously exposed transmission components and the sealing strip 103 are physically isolated, completely eliminating motion interference. The sealing strip 103 maintains its original pressed state when the window sash 100 is closed, preserving the integrity of the sealing interface. When it is necessary to lock the window sash 100, the transmission device 102 is switched to the second state, and the transmission component extends out of the cavity to perform the locking function. This solution, through a retractable cavity structure, completely conceals the transmission component when not in operation, preserving the pressing and sealing function of the sealing strip 103 while completely eliminating mechanical motion interference. This solution effectively solves the problem of transmission components rubbing against the sealing strip 103, causing poor opening and closing and damage to the strip 103, extending the service life of the strip 103 while maintaining the original sealing performance. It also avoids the risk of exposed components being corroded by the environment, improving the overall reliability of the window sash 100 assembly.

[0020] As another embodiment of this application, such as Figure 1 and Figure 2As shown, this application further proposes an operating transmission device 102 including a handle 1021, a transmission box 1022 connected to the handle 1021, a locking rod 1023 connected to the transmission box 1022, and a locking tongue 1024 connected to the locking rod 1023. A lock seat 201 is provided on the window frame 200, and the lock seat 201 has a slot 202. When the operating transmission device 102 is in the second state, the locking tongue 1024 engages with the slot 202; when the operating transmission device 102 is in the first state, the locking tongue 1024 disengages from the slot 202. The handle 1021 is an input component for receiving rotational operating force, specifically a rotary handle made of metal or engineering plastic. Its rotation axis is parallel to the plane of the window sash 100 to achieve the transmission of operating torque. The transmission box 1022 is a mechanical structure that converts rotational motion into linear motion, specifically a closed housing containing a gear pair or linkage mechanism. The housing is fixed to the inner wall of the window sash cavity 101 by bolts to isolate it from the external environment. The locking rod 1023 is a rigid component that transmits linear displacement. It can be made of stainless steel square rod or aluminum alloy profile, and its length is arranged parallel to the edge of the window sash 100 to achieve synchronous displacement of the locking tongue 1024. The locking tongue 1024 is a protruding structure that engages with the lock seat 201. It can be made of a wedge-shaped block made of hardened steel, with a chamfered contact surface to guide the alignment of the locking groove 202. The lock seat 201 is a receiving component fixed to the window frame 200. It can be made of an extruded profile of the same material as the window frame 200, and its locking groove 202 has a depth greater than the maximum stroke of the locking tongue 1024 to prevent interference. When the handle 1021 rotates, the rotational motion is converted into horizontal linear displacement of the locking rod 1023 through the gear pair inside the transmission box 1022. The locking rod 1023 then drives the locking tongue 1024 to move vertically. When the handle 1021 rotates to the second state, the latch 1024 fully extends out of the cavity and embeds into the slot 202 of the lock seat 201. At this time, the window sash 100 and the window frame 200 form a rigid connection, and the sealing strip 103 is evenly pressed. When the handle 1021 rotates in the opposite direction to the first state, the latch 1024 fully retracts into the cavity, and the end of the latch 1024 is flush with the outer surface of the window sash 100. At this time, the movement trajectory of the latch 1024 during the rotation of the window sash 100 is entirely within the internal space of the cavity, avoiding contact with the sealing strip 103. The reduction ratio of the gear pair inside the transmission box 1022 is set to a specific value, such as between 1:3 and 1:5, to ensure the balance between the operating torque and the displacement of the latch 1024. The inner wall of the slot 202 of the lock seat 201 is provided with a guide slope, which cooperates with the chamfer of the latch 1024 to produce a self-centering effect during the locking process. This solution completely houses the locking tongue 1024 within the cavity, eliminating the possibility of contact between the locking tongue 1024 and the rubber strip 103 during the opening process. At the same time, the guiding structure of the locking seat 201 slot 202 ensures that the locking tongue 1024 can be accurately reset when closed.In existing technologies, externally mounted transmission components allow rainwater to easily penetrate the gear mechanism. This solution addresses this by internally housing and sealing the transmission box 1022, thus blocking the path for moisture penetration. When the window sash 100 is open, this solution ensures that the latch 1024 completely avoids the sealing strip 103, preventing scratches on the strip's surface and deformation of the sealing surface. When the window sash 100 is closed, the rigid engagement between the latch 1024 and the slot 202 maintains a stable pressure, resolving the conflict between sealing performance and operational smoothness in traditional solutions. The vertical design of the latch 1024's movement trajectory shortens the transmission chain length and reduces operational force loss. Simultaneously, the horizontal displacement of the locking rod 1023 is converted into the vertical movement of the latch 1024, optimizing space utilization.

[0021] As a further embodiment of this application, refer to Figure 1 and Figure 2This application further proposes that the handle 1021 is rotatably connected to the window sash 100, and the handle 1021 switches between a first state and a second state of the transmission device 102 by rotation. The rotatable connection of the handle 1021 to the window sash 100 means that the handle 1021 and the window sash 100 achieve relative rotation through a rotating shaft or hinge structure. Specifically, this can be achieved using a rotating shaft assembly with a positioning slot 202, and a damping mechanism inside the rotating shaft ensures the stability of the handle 1021 after rotation. Switching states by rotation means that the rotation angle of the handle 1021 corresponds to the extension / retraction stroke of the transmission device. This can be achieved using a cam mechanism or a rack and pinion transmission structure. For example, a sector gear at the end of the rotating shaft of the handle 1021 meshes with a gear set in the transmission box 1022, converting rotational motion into linear displacement. Specifically, when the handle 1021 rotates, it drives the gear set in the transmission box 1022 to generate a linkage, and the gear set drives the locking tongue 1024 to move vertically through the locking rod 1023. When the handle 1021 rotates to the first angle, the latch 1024 is fully retracted into the window sash cavity 101. At this time, the latch 1024 does not contact the sealing strip 103 during the rotation of the window sash 100. When the handle 1021 rotates to the second angle, the latch 1024 extends out of the cavity and engages with the lock seat 201 slot 202. A guide rail is provided at the connection between the transmission box 1022 and the lock rod 1023 to ensure the accuracy of the movement trajectory of the latch 1024. A waterproof sealing ring is provided at the connection between the handle 1021 pivot and the window sash 100 to prevent external moisture from entering the cavity. This solution, through an integrated rotating structure, directly converts the rotation of the handle 1021 into the vertical displacement of the latch 1024, eliminating the lateral space occupation caused by the traditional horizontal push-pull handle 1021, allowing all transmission components to be completely hidden within the cavity. The problem of rainwater erosion caused by exposed transmission components in the prior art is fundamentally solved in this solution through the concealed structure. This application achieves fully enclosed control of the operating transmission device 102. During the rotation of the handle 1021, the vertical movement of the locking tongue 1024 is restricted within the window sash cavity 101, completely avoiding contact and friction between the locking tongue 1024 and the sealing strip 103. The linkage mechanism between the transmission box 1022 and the locking rod 1023 is completely hidden inside the window sash 100, which not only improves waterproof performance but also keeps the outer surface of the window sash 100 smooth and flat. A single rotation of the handle 1021 is sufficient to switch between opening and closing states, eliminating the need for lateral thrust during operation and reducing the risk of wear on the sealing strip 103.

[0022] As a further embodiment of this application, such as Figure 1 and Figure 2As shown, this application also proposes a gear set built into the transmission box 1022. The handle 1021 transmits torque to the gear set via a square steel linkage. The gear set drives the locking rod 1023 to control the locking tongue 1024 to move back and forth. The back and forth movement of the locking tongue 1024 is used for the locking tongue 1024 to engage or disengage from the slot 202. The gear set built into the transmission box 1022 means that the gear set is completely encapsulated inside the transmission box 1022. Specifically, it can be achieved by using a closed shell made of metal or engineering plastic to enclose the gear set, thus isolating the transmission components from the external environment. The square steel linkage refers to the transmission of torque through a steel connecting rod with a square cross-section. Specifically, it can be achieved by using a square steel rod made of heat-treated alloy steel to ensure the accuracy of torque transmission when the handle 1021 rotates. The locking lever 1023 controls the reciprocating movement of the latch 1024, meaning a rigid connection is formed between the locking lever 1023 and the latch 1024. This can be achieved using threaded fastening or a snap-fit ​​connection, allowing the linear motion of the locking lever 1023 to directly drive the synchronous displacement of the latch 1024. When the handle 1021 is rotated, the square steel transmits the rotational torque to the gear set within the transmission box 1022, which converts the rotational motion into the linear motion of the locking lever 1023. The locking lever 1023 drives the latch 1024 to move horizontally, causing the latch 1024 to fully retract into the window sash cavity 101 or extend and engage with the lock seat 201. When the latch 1024 retracts, its movement trajectory is confined within the cavity, preventing contact with the sealing strip 103. The gear ratio adjusts the displacement speed of the latch 1024, ensuring that the latch 1024 retracts quickly when disengaging from the slot 202 and remains stable when engaged. This solution isolates the external environment through a closed transmission box 1022. In existing technologies, the movement accuracy of the latch 1024 relies on a multi-stage hinge structure, while this solution achieves higher transmission accuracy through a rigid connection between the gear set and the square steel. It effectively solves the problem of the sealing strip 103 rubbing against exposed transmission components, ensuring that the latch 1024 completely avoids the pressing path of the sealing strip 103 when retracting. The closed structure of the transmission box 1022 prevents rainwater from entering the gear set, extending the service life of the components. The linkage between the square steel and the gear set improves the displacement control accuracy of the latch 1024, ensuring the reliability of the opening and closing action of the window sash 100. The built-in design hides the operating transmission device 102 inside the window sash 100, eliminating the impact of exposed components on the appearance of the door and window.

[0023] This application also proposes multiple locking tongue technical solutions. Furthermore, the application proposes an operating transmission device 102 including multiple locking tongues 1024, and multiple locking seats 201 on the window frame 200. Each locking seat 201 has a slot 202 that corresponds to and engages with each locking tongue 1024. The multiple locking tongues 1024 refer to locking components spaced apart along the edge of the window sash 100. Specifically, they can be rigidly connected to the locking rod 1023 using metal stamping. The displacement trajectory of each locking tongue 1024 forms a perpendicular fit with the opening direction of the corresponding slot 202. The multiple locking seats 201 refer to locking assemblies fixed to the inner side of the window frame 200. Specifically, they can be formed using injection molding to create a slot 202 structure with a guide bevel. The depth of the slot 202 can be set to match the extension length of the locking tongue 1024. When the transmission device 102 switches to the second state, multiple latches 1024 extend synchronously under the drive of the transmission box 1022, and each latch 1024 is embedded in the corresponding slot 202 of the lock seat 201 to form a multi-point engagement. Since the latches 1024 and the slots 202 have a one-to-one correspondence, the locking force of each engagement point can be evenly distributed along the closed surface of the window sash 100, avoiding excessive pressure on a single engagement point that could cause local deformation of the sealing strip 103. The guide slope of the slot 202 of the lock seat 201 can guide the latches 1024 to be accurately embedded, preventing the latches 1024 from colliding and rubbing against the edge of the slot 202. The horizontal displacement of the locking rod 1023 is converted into the vertical displacement of the latches 1024 through the gear set, so that multiple latches 1024 form a synchronous pressing action when the window sash 100 is closed. By setting multiple locking tongues 1024 to form a distributed interlocking structure with the lock seat 201, the closing pressure of the window sash 100 is distributed to multiple contact areas, effectively reducing the stress per unit area of ​​the sealing strip 103. This effectively solves the problem of uneven pressure between the window sash 100 and the window frame 200 caused by single-point locking. Multi-point synchronous interlocking ensures a balanced force distribution on the sealing strip 103, preventing permanent deformation or tearing due to stress concentration in local areas. It also reduces the risk of locking tongue 1024 failure and improves the sealing stability of the window sash 100 in the closed state.

[0024] This application further proposes that the operating transmission device 102 includes two latches 1024, and two lock seats 201 are provided on the window frame 200. Each lock seat 201 has a slot 202 that corresponds to and engages with each latch 1024. The latch 1024 is a rigid component used to engage with the slot 202 of the lock seat 201 to achieve locking. It can be made of stamped metal or injection molded metal, and its cross-sectional shape matches the slot 202 to form an effective engagement. The lock seat 201 is a load-bearing component fixed to the window frame 200. It can be installed by welding or bolting, and the depth of its slot 202 is adapted to the stroke of the latch 1024 to ensure locking stability. The one-to-one engagement means that each latch 1024 only cooperates with the slot 202 of a single lock seat 201. This can be achieved by symmetrically distributing the latches 1024 and lock seats 201 to avoid overlapping movement trajectories of the latches 1024. When the transmission device 102 switches to the second state, the two locking tongues 1024 synchronously engage with the corresponding slots 202 of the lock seat 201, forming symmetrically distributed locking points. The correspondence between the locking tongues 1024 and the slots 202 ensures that the locking force is evenly transmitted to both sides of the window frame 200, eliminating the risk of localized compression deformation of the sealing strip 103 caused by single-point locking. Limiting the number of locking tongues 1024 to two satisfies the requirement for locking stability while avoiding the complexity of the transmission mechanism caused by an excessive number of locking tongues 1024. The independent engagement design between the lock seat 201 and the locking tongues 1024 ensures that each locking tongue 1024 does not interfere with each other during vertical displacement, improving the synchronization accuracy of the locking action. Through the cooperation of the double locking tongues 1024 and the double lock seat 201, a balance is achieved between the distribution of locking force and structural complexity, achieving symmetrical locking protection of the sealing strip 103 while avoiding redundancy in the number of transmission components. It effectively prevents the sealing strip 103 from being scratched and damaged due to single-point pressure or misalignment of the locking tongue 1024. At the same time, by limiting the number of locking tongues 1024 to two, it avoids excessive complexity of the transmission device structure while ensuring the reliability of locking.

[0025] This application further proposes a gear set that drives the locking lever 1023 to move horizontally axially relative to the window sash 100. The gear set refers to a power transmission mechanism composed of multiple meshing gears, specifically using a combination of spur gears and a rack. The rotation of the gears drives the rack to move linearly, thus converting rotational torque into linear driving force. The locking lever 1023 is a rigid rod connecting the gear set and the locking tongue 1024, specifically made of metal. Power transmission is achieved through a fixed connection between the rack and the locking lever 1023. When the locking lever 1023 moves horizontally, it drives the locking tongue 1024 to move synchronously. The horizontal axial displacement refers to the linear movement of the locking lever 1023 parallel to the mounting surface of the window sash 100. This is specifically achieved through the cooperation of the rack and a guide rail, ensuring that the movement trajectory of the locking lever 1023 is spatially misaligned with the pressing surface of the sealing strip 103. The gear set, through the fixed connection between the rack and the locking lever 1023, converts the rotational motion of the gears into the horizontal linear motion of the locking lever 1023. When the handle 1021 rotates, the gear set drives the locking rod 1023 to move horizontally, causing the locking tongue 1024 to extend and retract horizontally in sync. The movement trajectory of the locking rod 1023 and the pressing area of ​​the sealing strip 103 are on different planes. When the operating transmission device 102 retracts into the window sash cavity 101, the horizontal movement path of the locking rod 1023 is completely outside the pressing surface of the sealing strip 103, avoiding contact between the two. The transmission accuracy of the gear set ensures that the locking tongue 1024 is accurately aligned with the slot 202 of the lock seat 201 during horizontal movement, achieving reliable engagement and disengagement. When the traditional locking rod 1023 moves vertically, the locking rod 1023 and transmission components need to be partially exposed on the surface of the window sash 100, causing its movement trajectory to overlap with the pressing area of ​​the sealing strip 103, which can easily cause scratches. This solution, through a horizontal axial displacement design, spatially separates the movement path of the locking rod 1023 from the sealing strip 103, completely concealing the transmission components within the window sash cavity 101. This eliminates the risk of movement interference and prevents components from being exposed. This application solves the problem of the vertical movement of the locking rod 1023 causing the transmission components to be exposed and rub against the sealing strip 103. The accuracy of the locking tongue 1024's engagement action is ensured by the transmission stability of the gear set. At the same time, the horizontal displacement design allows the locking rod 1023 and the entire transmission mechanism to be housed inside the window sash 100, preventing rainwater erosion and improving the cleanliness of the appearance.

[0026] As another embodiment of this application, this application further proposes that the locking rod 1023 drives the locking tongue 1024 to move vertically relative to the window sash 100. The locking rod 1023 refers to a rigid rod-shaped component connected to the output end of the transmission box 1022, which can be implemented using a metal square tube or round tube, and its axial movement direction is limited to being perpendicular to the plane of the window sash 100. This feature constrains the movement trajectory of the locking rod 1023, causing the movement path of the locking tongue 1024 to form a spatial misalignment with the pressing plane of the sealing strip 103. The vertical displacement of the locking tongue 1024 refers to the linear movement of the locking tongue 1024 along the thickness direction of the window sash 100, which can be implemented using a linkage mechanism or a gear and rack transmission. This feature changes the retraction direction of the locking tongue 1024, causing the locking tongue 1024 to be completely retracted into the window sash cavity 101, eliminating the possibility of contact with the sealing strip 103. When the transmission device 102 switches to the first state, the locking lever 1023 is driven by the gear set to produce a vertically downward linear displacement, causing the locking tongue 1024 to move down synchronously until it is completely retracted into the window sash cavity 101. In this state, the top plane of the locking tongue 1024 is lower than the outer surface of the window sash 100, forming a height difference with the pressing plane of the sealing strip 103 of the window frame 200. During the rotation of the window sash 100, the locking tongue 1024 is always inside the cavity, and its movement trajectory has no spatial intersection with the plane of the sealing strip 103, thus avoiding scratching during rotation. The vertical movement direction of the locking lever 1023 is orthogonal to the pivot axis of the window sash 100, so that the retraction action of the locking tongue 1024 and the rotation action of the window sash 100 do not interfere with each other in three-dimensional space. Compared with the prior art, in the traditional horizontal displacement scheme of the locking tongue 1024, the locking tongue 1024 can only move laterally within the plane of the window sash 100, and its top is always exposed on the outer surface of the window sash 100. When the window sash 100 rotates, the exposed part of the latch 1024 slides and rubs against the sealing strip 103, causing wear and seal failure. This solution uses a vertical displacement mechanism to completely disengage the latch 1024 from the plane of the sealing strip 103 when not in operation, fundamentally eliminating the possibility of contact. This effectively solves the problem of reduced sealing performance and component wear caused by the latch 1024 rubbing against the sealing strip 103 when the window sash 100 rotates. After the latch 1024 is vertically retracted, the sealing strip 103 maintains its original pressed state, avoiding local deformation caused by mechanical interference. At the same time, the movement trajectory of the latch 1024 and the rotation trajectory of the window sash 100 form a spatial isolation, ensuring that the transmission components completely avoid the sealing structure when not locked, extending the service life of the sealing strip 103.

[0027] As an embodiment of this application, this application further proposes that the sealing strip 103 is an EPDM sealing strip 103, and the sealing strip 103 is press-fitted between the window sash 100 and the window frame 200. In some specific embodiments, the Shore hardness of the sealing strip 103 can be controlled within the range of 50-70 to balance sealing performance and operating resistance. The depth of the mounting groove can be designed to be 70-80% of the height of the strip 103 in its free state to ensure effective compression after assembly. Through the weather resistance of EPDM material and the structural design of press-fitting, the strip 103 maintains a stable sealing contact surface during long-term use, while avoiding material fatigue fracture caused by repeated deformation. This application effectively solves the problem of decreased sealing performance of the sealing strip 103 due to material deterioration or insufficient pressing. During the repeated opening and closing of the window sash 100, the strip 103 can continuously compensate for displacement deviations between components, prevent rainwater or airflow penetration, reduce surface wear caused by friction, and extend the service life of the sealing structure.

[0028] This application further proposes outward-opening doors and windows, including a window sash 100 assembly. The window sash 100 assembly refers to a structural unit comprising a window frame 200, a window sash 100, and an operating transmission device 102. Specifically, it can be implemented using an aluminum alloy profile frame and a built-in transmission mechanism, with the operating transmission device 102 housed within a cavity structure to form an internal space. The operating transmission device 102 is a mechanical linkage mechanism that controls the opening and closing of the door and window. Specifically, it can be implemented by a handle 1021 driving a gear set to move a locking rod 1023, with the locking tongue 1024 engaging or disengaging from the locking seat 201 through state switching. The sealing strip 103 is an elastic component used for pressure sealing between the window sash 100 and the window frame 200, specifically made of EPDM rubber, maintaining sealing performance through continuous pressure.

[0029] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. Window sash assembly, including: A window frame, a window sash pivotally connected to the window frame, and an operating transmission device disposed on the window sash, wherein the window frame is provided with a sealing strip for pressing against the window sash, characterized in that the window sash has a cavity, and the operating transmission device has a first state and a second state. When the operating transmission device is in the first state, the operating transmission device retracts into the cavity, and when the window sash rotates relative to the window frame, the operating transmission device avoids the sealing strip.

2. The window sash assembly according to claim 1, characterized in that, The operating transmission device includes a handle, a transmission box connected to the handle, a locking rod connected to the transmission box, and a locking tongue connected to the locking rod; a lock seat is provided on the window frame, and the lock seat has a slot; when the operating transmission device is in the second state, the locking tongue is engaged with the slot; when the operating transmission device is in the first state, the locking tongue is disengaged from the slot.

3. The window sash assembly according to claim 2, characterized in that, The handle is rotatably connected to the window sash, and the handle switches between the first and second states of the operating transmission device by rotation.

4. The window sash assembly according to claim 3, characterized in that, The transmission box has a built-in gear set. The handle transmits torque to the gear set through a square steel linkage. The gear set drives the locking rod to control the locking tongue to move back and forth. The back and forth movement of the locking tongue is used for the locking tongue to engage / disengage from the slot.

5. The window sash assembly according to claim 2, characterized in that, The operating transmission device includes multiple locking tongues, and the window frame is provided with multiple locking seats. Each locking seat is provided with a slot that corresponds to and engages with each locking tongue.

6. The window sash assembly according to claim 5, characterized in that, The operating transmission device includes two locking tongues, and the window frame is provided with two locking seats. Each locking seat has a slot that corresponds to and engages with each of the locking tongues.

7. The window sash assembly according to claim 4, characterized in that, The gear set drives the locking rod to move horizontally relative to the window sash.

8. The window sash assembly according to claim 7, characterized in that, The locking lever causes the locking tongue to move vertically relative to the window sash.

9. The window sash assembly according to claim 1, characterized in that, The sealing strip is an EPDM sealing strip, and the sealing strip is pressurized between the window sash and the window frame.

10. Outward-opening doors and windows, including the window sash assembly as described in any one of claims 1 to 9.

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