Automatic inner tilting mechanism of door and window and door and window

Abstract

The application discloses a door and window automatic inward tilting mechanism and door and window. The mechanism comprises a hinge assembly, a transmission assembly, a base, a driving piece and a short rocker arm. The transmission assembly is slidably connected to the base. One end of the hinge assembly is slidably connected to the base. The driving piece is connected to the transmission assembly and slidably connected to the base. A driving shaft is slidably connected to the driving piece. The driving shaft is rotatably connected to the short rocker arm and the end of the driving shaft is connected to the hinge assembly. A driving column is arranged on the driving piece and slidably connected to the short rocker arm. One end of the short rocker arm is rotatably connected to the base. When the transmission assembly is driven to slide along the base, the driving piece slides along the base, the driving shaft slides along the driving piece and the driving column slides along the short rocker arm, the driving piece and the short rocker arm are opened or closed, the hinge assembly is driven to be opened or closed, and the inward tilting state or the recovery state is realized. Only one motor is needed to drive the transmission assembly to move, the door and window can be automatically opened or closed, the control is simple, the cost is low, the installation is simple and the failure rate is low.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, and in particular to an automatic tilt-in mechanism for doors and windows, and a door and window thereof. Background Technology

[0002] Existing tilt-and-turn windows and doors typically operate manually or electrically. Manual operation requires the operator to rotate the handle to the corresponding position, causing the transmission component to drive the hinge component to switch to the tilt-and-turn position. The operator then pulls the window or door into the tilt-and-turn position, which is inconvenient. Existing electric operation requires two motors: one is a rocker arm motor responsible for opening and closing the window sash, and the other is a locking point motor that drives the handle to rotate and locks the window sash after it is closed. This dual-motor solution has complex system control, high cost, troublesome installation, and a high failure rate. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic inward tilting mechanism for doors and windows, as well as doors and windows.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide an automatic tilt-in mechanism for doors and windows, comprising: a hinge assembly, a transmission assembly, a base, a drive component, and a short rocker arm. The transmission assembly is slidably connected to the base, one end of the hinge assembly is slidably connected to the base, the drive component is connected to the transmission assembly and slidably connected to the base, a drive shaft is slidably connected to the drive component, the drive shaft is rotatably connected to the short rocker arm, and its end is connected to the hinge assembly. The drive component is provided with a drive column, the drive column is slidably connected to the short rocker arm, and one end of the short rocker arm is rotatably connected to the base.

[0006] When the transmission assembly is driven, the driving member slides along the base, the driving shaft slides along the driving member, and the driving column slides along the short rocker arm, causing the driving member and the short rocker arm to open or close, thereby driving the hinge assembly to open or close to achieve an inward tilting state or a retracted state.

[0007] In one specific embodiment, the driving member is provided with a driving groove, and one end of the driving shaft is slidably connected to the driving groove.

[0008] In one specific embodiment, the short rocker arm is provided with a sliding groove, and the drive column is slidably connected to the sliding groove.

[0009] In one specific embodiment, the sliding groove includes a locking segment that extends at least partially along the width direction of the short rocker arm.

[0010] In one specific embodiment, the transmission component is slidably connected to the lower part of the base, the base is provided with a first elongated groove and a second elongated groove, one end of the hinge component is slidably connected to the first elongated groove, and the driving component is slidably connected to the second elongated groove.

[0011] In one specific embodiment, the drive member is connected to a connecting shaft, which passes through the second elongated slot and is connected to the transmission assembly.

[0012] In one specific embodiment, the transmission assembly includes a transmission end and a pin end, the connecting shaft is connected to the transmission end, the pin end away from the transmission end is provided with a locking protrusion, the hinge assembly is provided with a lock seat, and the lock seat is provided with a lock groove for the locking protrusion to be inserted.

[0013] In one specific embodiment, the hinge assembly includes a long rocker arm and a hinge end, the long rocker arm is slidably connected to the first elongated groove, the short rocker arm is hinged to the long rocker arm, and the lock seat is disposed at the hinge end.

[0014] In one specific embodiment, the end of the transmission end that is away from the pin end is provided with a transmission part.

[0015] The advantages of the automatic inward tilting mechanism for doors and windows of the present invention compared with the prior art are as follows: A transmission assembly is slidably connected to a base; one end of a hinge assembly is slidably connected to the base; a drive shaft is slidably connected to a drive member; the drive shaft is rotatably connected to a short rocker arm and the hinge assembly; a drive column is provided on the drive member; the drive column is slidably connected to the short rocker arm; the drive member is connected to the transmission assembly and slidably connected to the base; the short rocker arm is rotatably connected to the base; when the transmission assembly is driven towards the end away from the drive member, the drive member slides along the base, and the drive shaft slides along the drive member. The drive column slides along the short rocker arm, causing the drive component and the short rocker arm to open, thus separating the hinge assembly from the transmission assembly and placing it in an inward tilting state. When the transmission assembly is driven towards the end closer to the drive component, the drive component slides along the base, the drive shaft slides along the drive component, and the drive column slides along the short rocker arm, causing the drive component and the short rocker arm to close, thus closing the hinge assembly and the transmission assembly and placing it in a retracted state. Only one motor is needed to drive the transmission assembly to achieve automatic opening or closing of doors and windows, which is simple to control, low in cost, easier to install, and has a low failure rate.

[0016] Secondly, embodiments of the present invention provide a door and window, including a frame, a sash, a power component, and an automatic tilt-in mechanism as described above. The hinge assembly, at one end away from the base, is connected to the frame. The base is mounted on the sash. The transmission component is tractively connected to the power component. When the power component drives the transmission component to move towards the end away from the driving component, the driving component slides along the base, the driving shaft slides along the driving component, and the driving column slides along the short rocker arm, causing the driving component and the short rocker arm to open, thus separating the hinge assembly from the transmission component and placing it in a tilt-in state, i.e., the frame and the sash are open. When the power component drives the transmission component to move towards the end closer to the driving component, the driving component slides along the base, the driving shaft slides along the driving component, and the driving column slides along the short rocker arm, causing the driving component and the short rocker arm to close, thus closing the hinge assembly and the transmission component and placing it in a retracted state, i.e., the frame and the sash are closed.

[0017] The advantages of the door and window of the present invention compared with the prior art are as follows: the hinge assembly is connected to the frame at the end away from the base, the base is installed on the sash, and the transmission assembly is connected to the power component. When the power component drives the transmission assembly to move towards the end away from the driving component, the driving component slides along the base, the driving shaft slides along the driving component, and the driving column slides along the short rocker arm, causing the driving component and the short rocker arm to open, so that the hinge assembly and the transmission assembly are separated and in an inward tilting state, that is, the frame and the sash are open; when the power component drives the transmission assembly to move towards the end close to the driving component, the driving component slides along the base, the driving shaft slides along the driving component, and the driving column slides along the short rocker arm, so that the driving component and the short rocker arm are closed, so that the hinge assembly and the transmission assembly are closed and in a retracted state, that is, the frame and the sash are closed. This door and window only requires one motor to drive the transmission assembly to move, so that the door and window can automatically open or close. It is simple to control, low in cost, easier to install, and has a low failure rate.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the automatic tilt-in mechanism for doors and windows provided by the present invention in the tilt-in state;

[0021] Figure 2 A schematic diagram of the automatic tilt-in mechanism for doors and windows provided by the present invention in the retracted state;

[0022] Figure 3 Exploded view of the automatic tilt-in mechanism for doors and windows provided by the present invention Figure 1 ;

[0023] Figure 4 Exploded view of the automatic tilt-in mechanism for doors and windows provided by the present invention Figure 2 ;

[0024] Figure 5 A schematic diagram of the structure of the door and window in the inward tilting state provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the doors and windows in the recycling state provided by the present invention.

[0026] In the diagram: 10, hinge assembly; 11, long rocker arm; 12, hinge end; 121, lock seat; 1211, lock groove; 20, transmission assembly; 21, transmission end; 211, transmission part; 22, pin end; 221, locking protrusion; 30, base; 31, first long groove; 32, second long groove; 33, limiting shaft; 40, driving component; 41, drive shaft; 42, drive column; 43, drive groove; 44, connecting shaft; 50, short rocker arm; 51, sliding groove; 511, locking section; 60, frame; 70, fan body. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0034] See Figures 1 to 4The specific embodiment shown in the present invention discloses an automatic inward tilting mechanism for doors and windows, including: a hinge assembly 10, a transmission assembly 20, a base 30, a drive component 40, and a short rocker arm 50. The transmission assembly 20 is slidably connected to the base 30, one end of the hinge assembly 10 is slidably connected to the base 30, the drive component 40 is connected to the transmission assembly 20 and slidably connected to the base 30, a drive shaft 41 is slidably connected to the drive component 40, the drive shaft 41 is rotatably connected to the short rocker arm 50, and its end is connected to the hinge assembly 10. The drive component 40 is provided with a drive column 42, the drive column 42 is slidably connected to the short rocker arm 50, and one end of the short rocker arm 50 is rotatably connected to the base 30.

[0035] When the transmission assembly 20 is driven, the drive member 40 slides along the base 30, the drive shaft 41 slides along the drive member 40, and the drive column 42 slides along the short rocker arm 50, causing the drive member 40 and the short rocker arm 50 to open or close, thereby driving the hinge assembly 10 to open or close to achieve an inward tilting state or a retracted state.

[0036] Specifically, the transmission assembly 20 is slidably connected to the base 30, one end of the hinge assembly 10 is slidably connected to the base 30, and a drive shaft 41 is slidably connected to the drive member 40. The drive shaft 41 is hinged to the short rocker arm 50 and the hinge assembly 10. The drive member 40 is provided with a drive column 42, which is slidably connected to the short rocker arm 50. The drive member 40 is connected to the transmission assembly 20 and slidably connected to the base 30, and the short rocker arm 50 is rotatably connected to the base 30. When the transmission assembly 20 is driven towards the end away from the drive member 40, the drive member 40 slides along the left side of the base 30, the drive shaft 41 slides along the right side of the drive member 40, and the drive column 42 slides along the short rocker arm 50. The left side of the arm 50 slides, causing the drive component 40 and the short rocker arm 50 to open, so that the hinge assembly 10 is separated from the transmission assembly 20 and is in an inward tilted state; when the transmission assembly 20 is driven towards the end near the drive component 40, the drive component 40 slides along the right side of the base 30, the drive shaft 41 slides along the left side of the drive component 40, and the drive column 42 slides along the right side of the short rocker arm 50, so that the drive component 40 and the short rocker arm 50 close, so that the hinge assembly 10 and the transmission assembly 20 are closed and are in a retracted state; only one motor is needed to drive the transmission assembly 20 to move, so that the doors and windows can be automatically opened or closed, which is simple to control, low in cost, easier to install, and has a low failure rate.

[0037] In one embodiment, the drive member 40 is provided with a drive groove 43, one end of the drive shaft 41 is slidably connected to the drive groove 43, and the other end is hinged to the short rocker arm 50 and the hinge assembly 10.

[0038] Specifically, the lower end of the drive shaft 41 is slidably connected to the drive groove 43, and the upper end passes through the short rocker arm 50 and the hinge assembly 10 in sequence to form a hinge, so that the drive shaft 41 can slide along the drive groove 43 to open or close the drive member 40 and the short rocker arm 50.

[0039] In one embodiment, the short rocker arm 50 is provided with a sliding groove 51, and the drive column 42 is slidably connected to the sliding groove 51.

[0040] Specifically, the drive column 42 is located in the middle section of the drive member 40, and the drive column 42 is slidably connected to the sliding groove 51 so that the short rocker arm 50 opens or closes.

[0041] Preferably, the drive column 42 is a cylinder, which has high strength and low friction, resulting in smoother sliding.

[0042] In one embodiment, the sliding groove 51 includes a locking section 511 that extends at least partially along the width direction of the short rocker arm 50. In the inverted state, the drive column 42 is located in the locking section 511 to achieve a limit.

[0043] Specifically, the drive section 511 is located on the left side of the sliding groove 51. By setting the locking section 511, the drive column 42 can slide more smoothly in the sliding groove 51. At the same time, when the hinge assembly 10 and the transmission assembly 20 are in the inward tilting state, the drive column 42 is in the locking section 511, which plays a supporting and limiting role.

[0044] In one embodiment, the transmission assembly 20 is slidably connected to the lower part of the base 30, the base 30 is provided with a first elongated groove 31 and a second elongated groove 32, one end of the hinge assembly 10 is slidably connected to the first elongated groove 31, and the drive member 40 is slidably connected to the second elongated groove 32.

[0045] Specifically, one end of the hinge assembly 10 is slidably connected to the first elongated groove 31 via a limiting shaft 33, so that the hinge assembly 10 can slide back and forth along the first elongated groove 31. One end of the drive member 40 is slidably connected to the second elongated groove 32, so that the drive member 40 can slide back and forth along the second elongated groove 32.

[0046] In one embodiment, a connecting shaft 44 is connected to the drive member 40, and the connecting shaft 44 passes through the second elongated groove 32 and is connected to the transmission assembly 20.

[0047] Specifically, one end of the driving component 40 is slidably connected to the second elongated groove 32 via the connecting shaft 44, and the lower end of the connecting shaft 44 is rotatably connected to the transmission assembly 20, so that when the transmission assembly 20 moves, it drives the driving component 40 to rotate around the connecting shaft 44.

[0048] In one embodiment, the transmission assembly 20 includes a transmission end 21 and a pin end 22. The connecting shaft 44 is connected to the transmission end 21. The pin end 22 is provided with a locking protrusion 221 at the end away from the transmission end 21. The hinge assembly 10 is provided with a lock seat 121. The lock seat 121 is provided with a lock groove 1211 for the locking protrusion 221 to be inserted.

[0049] Specifically, the connecting shaft 44 is rotatably connected to the transmission end 21. When the hinge assembly 10 and the transmission assembly 20 are closed, the transmission assembly 20 continues to move toward the end closer to the drive member 40, so that the locking protrusion 221 is inserted into the locking groove 1211 to achieve the locking function.

[0050] In one embodiment, the hinge assembly 10 includes a long rocker arm 11 and a hinge end 12. The long rocker arm 11 is slidably connected to a first elongated groove 31, a short rocker arm 50 is hinged to the long rocker arm 11, and a lock seat 121 is disposed at the hinge end 12.

[0051] Specifically, the long rocker arm 11 is slidably connected to the first long groove 31 via the limiting shaft 33, and the drive shaft 41 passes through the short rocker arm 50 and is rotatably connected to the long rocker arm 11.

[0052] In one embodiment, the transmission end 21 is provided with a transmission part 211 at the end away from the pin end 22.

[0053] Specifically, the transmission unit 211 is used to connect with an external power component (preferably a motor) to drive the entire transmission assembly 20 to move back and forth, thereby realizing the function of automatic inward tilting or automatic retraction of the entire mechanism.

[0054] See Figures 5 to 6 The present invention also discloses a door and window, including a frame 60, a sash 70, a power component (not shown in the figure), and an automatic tilt-in mechanism as described above. The hinge assembly 10 is connected to the frame 60 at one end away from the base 30. The base 30 is mounted on the sash 70. The transmission assembly 20 is connected to the power component. When the power component drives the transmission assembly 20 to move towards the end away from the drive component 40, the drive component 40 slides along the base 30, the drive shaft 41 slides along the drive component 40, and the drive column 42 slides along the short rocker arm 50. This causes the drive member 40 and the short rocker arm 50 to open, so that the hinge assembly 10 is separated from the transmission assembly 20 and is in an inward-folding state, that is, the frame 60 and the fan 70 are open; when the power member drives the transmission assembly 20 to move towards the end near the drive member 40, the drive member 40 slides along the base 30, the drive shaft 41 slides along the drive member 40, and the drive column 42 slides along the short rocker arm 50, so that the drive member 40 and the short rocker arm 50 are closed, so that the hinge assembly 10 and the transmission assembly 20 are closed and are in a retracted state, that is, the frame 60 and the fan 70 are closed.

[0055] Specifically, the base 30 is fixed to the sash 70 with screws, and the transmission assembly 20 is slidably connected to the sash 70 and the base 30. The door / window is connected to the frame 60 via a hinge assembly 10 at the end away from the base 30. The transmission assembly 20 is driven by a power component. When the power component drives the transmission assembly 20 to move away from the drive component 40, the drive component 40 slides along the left side of the base 30, the drive shaft 41 slides along the right side of the drive component 40, and the drive column 42 slides along the left side of the short rocker arm 50, causing the drive component 40 and the short rocker arm 50 to open, thus separating the hinge assembly 10 from the transmission assembly 20 and placing it in an inward tilting state, i.e., the frame 60 and the sash 70 are open. When the power component drives the transmission assembly 20 to move away from the drive component 40, the door / window is connected to the frame 60 via a hinge assembly 10 at the end away from the base 30. The moving component 20 moves toward one end close to the driving component 40. The driving component 40 slides along the right side of the base 30, the driving shaft 41 slides along the left side of the driving component 40, and the driving column 42 slides along the right side of the short rocker arm 50, so that the driving component 40 and the short rocker arm 50 are closed, so that the hinge assembly 10 and the transmission assembly 20 are engaged and in a retracted state, that is, the frame 60 and the sash 70 are closed. This door and window only needs one motor (i.e., the power component) to drive the transmission assembly 20 to move, so that the door and window can be automatically opened or closed. It is simple to control, low in cost, easier to install, and has a low failure rate.

[0056] In one embodiment, the door / window can be used in a smart control scenario. The power component is communicatively connected to a smart terminal, and the user can control the opening or closing of the door / window via an app on the smart terminal. This communication connection uses existing publicly available technology, which will not be described in detail here.

[0057] In one embodiment, the door and window can be used for intelligent control in rainy weather. A water immersion sensor is installed on the fan body 70. When the water immersion sensor detects rainwater, it automatically activates the power component, thereby automatically closing the door and window, which is convenient and quick.

[0058] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present technical solution are within the protection scope of the present invention.

Claims

1. An automatic tilt-in mechanism for doors and windows, characterized in that, include: The device comprises a hinge assembly, a transmission assembly, a base, a drive component, and a short rocker arm. The transmission assembly is slidably connected to the base. One end of the hinge assembly is slidably connected to the base. The drive component is connected to the transmission assembly and slidably connected to the base. A drive shaft is slidably connected to the drive component. The drive shaft is rotatably connected to the short rocker arm, and its end is connected to the hinge assembly. A drive column is provided on the drive component. The drive column is slidably connected to the short rocker arm. One end of the short rocker arm is rotatably connected to the base. When the transmission assembly is driven, the driving member slides along the base, the driving shaft slides along the driving member, and the driving column slides along the short rocker arm, causing the driving member and the short rocker arm to open or close, thereby driving the hinge assembly to open or close to achieve an inward tilting state or a retracted state. The driving component is provided with a driving groove, and one end of the driving shaft is slidably connected to the driving groove; the short rocker arm is provided with a sliding groove, and the driving column is slidably connected to the sliding groove.

2. The automatic tilt-in mechanism for doors and windows according to claim 1, characterized in that, The sliding groove includes at least a locking section that extends along the width direction of the short rocker arm.

3. The automatic tilt-in mechanism for doors and windows according to claim 1, characterized in that, The transmission component is slidably connected to the lower part of the base. The base is provided with a first elongated groove and a second elongated groove. One end of the hinge component is slidably connected to the first elongated groove, and the drive component is slidably connected to the second elongated groove.

4. The automatic tilt-in mechanism for doors and windows according to claim 3, characterized in that, The drive component is connected to a connecting shaft, which passes through the second elongated slot and is connected to the transmission assembly.

5. The automatic tilt-in mechanism for doors and windows according to claim 4, characterized in that, The transmission assembly includes a transmission end and a pin end. The connecting shaft is connected to the transmission end. The pin end away from the transmission end has a locking protrusion. The hinge assembly has a lock seat with a lock groove for the locking protrusion to be inserted.

6. The automatic tilt-in mechanism for doors and windows according to claim 5, characterized in that, The hinge assembly includes a long rocker arm and a hinge end. The long rocker arm is slidably connected to the first elongated groove, the short rocker arm is hinged to the long rocker arm, and the lock seat is located at the hinge end.

7. The automatic tilt-in mechanism for doors and windows according to claim 5, characterized in that, The transmission end is provided with a transmission part at the end away from the pin end.

8. A door or window, characterized in that, The device includes a frame, a sash, a power component, and an automatic tilt-in mechanism for doors and windows as described in any one of claims 1-7. The hinge assembly is connected to the frame at one end away from the base. The base is mounted on the sash. The transmission assembly is drively connected to the power component. When the power component drives the transmission assembly to move towards the end away from the drive component, the drive component slides along the base, the drive shaft slides along the drive component, and the drive column slides along the short rocker arm, causing the drive component and the short rocker arm to open, thus separating the hinge assembly from the transmission assembly and placing it in a tilt-in state, i.e., the frame and the sash are open. When the power component drives the transmission assembly to move towards the end closer to the drive component, the drive component slides along the base, the drive shaft slides along the drive component, and the drive column slides along the short rocker arm, causing the drive component and the short rocker arm to close, thus closing the hinge assembly and the transmission assembly and placing it in a retracted state, i.e., the frame and the sash are closed.

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