A limiting structure and a casement bottom-hung window

Abstract

The application is suitable for the field of door and window manufacturing, and provides a limiting structure and a casement bottom-hung window. The limiting structure comprises a lock seat, a locking assembly, the lock seat is provided with a first limiting part, the locking assembly is movably provided with a locking piece capable of cooperating with the first limiting part, the lock seat is arranged on a window frame or a window sash, the locking assembly is arranged on the window sash or the window frame, a transmission assembly is connected with the locking assembly or the lock seat, the locking piece has an initial position and a second position, when the transmission assembly is in a casement position, the transmission assembly drives the locking assembly or the lock seat to a preset position, when the locking piece is in the initial position, the locking piece is separated from the first limiting part, and the window sash can be opened horizontally, when the locking piece is in the second position, the locking piece cooperates with the first limiting part, and the first limiting part blocks the locking piece so that the window sash cannot be opened horizontally. The application can avoid the security risk of falling caused by the window sash being opened by mistake, and is arranged in the window structure to ensure the integrity and the aesthetic appearance of the window structure.

Description

A limiting structure and a casement bottom-hung window Technical Field

[0001] This invention belongs to the field of door and window manufacturing, and particularly relates to a limiting structure and a casement bottom-hung window. Background Technology

[0002] In building construction, casement and bottom-hung windows are becoming increasingly common. This type of window can be opened in either direction (casement or bottom-hung). When opened, it allows for ample ventilation while the window is tilted down, ensuring ventilation when the user is outside while preventing rainwater from entering during windy or rainy weather. Therefore, casement and bottom-hung windows are gaining popularity. However, since both the casement and bottom-hung positions are operated via handles, children can easily accidentally open the window to the casement position when no adults are present, potentially posing a safety hazard of falling out of the window. Summary of the Invention

[0003] The limiting structure provided by this invention aims to solve the problem that the existing technology cannot restrict the opening of window sashes, which makes it easy for children to accidentally open the window sashes and create safety hazards.

[0004] The present invention is implemented as follows: a limiting structure for a casement window with a bottom-hung design, the casement window with a bottom-hung design includes a window sash, a window frame and a transmission assembly, the transmission assembly includes a casement position, a locked position and a bottom-hung position, the limiting structure includes a lock seat and a locking assembly, the lock seat is provided with a first limiting part, and the locking assembly is movably provided with a locking element that can cooperate with the first limiting part;

[0005] The lock seat is located on the inner side of the window frame, the locking component is located on the outer side of the window sash, and the transmission component is connected to the locking component; or, the lock seat is located on the outer side of the window sash, the locking component is located on the inner side of the window frame, and the transmission component is connected to the lock seat.

[0006] The locking member has an initial position and a second position in the moving direction of the locking assembly or the lock seat. When the transmission assembly is in the open position, the transmission assembly drives the locking assembly or the lock seat to the preset position. When the locking member is in the initial position, the locking member is separated from the first limiting part, and the window sash can be opened. When the locking member is in the second position, the locking member cooperates with the first limiting part, and the first limiting part blocks the locking member so that the window sash cannot be opened.

[0007] Furthermore, the first limiting part is a protrusion that protrudes from the surface of the lock seat. In the open position, the transmission assembly drives the locking assembly or the lock seat to a preset position. When the locking member is in the second position, the locking member is located on the side of the protrusion that is away from the window sash opening direction so that the first limiting part blocks the window sash from opening.

[0008] Furthermore, the locking component base is movably mounted on the window sash or fixed on the window frame. The base has a strip-shaped through groove that extends along the moving direction of the locking component or the lock seat. The locking member is movably disposed within the strip-shaped through groove. When the locking member moves to both ends of the strip-shaped through groove, the locking member is in the initial position or the second position.

[0009] Furthermore, the locking component includes a locking part and a second limiting part. The base is provided with a third limiting part that can cooperate with the second limiting part. One end of the locking part passes through the strip-shaped through groove, and the other end extends out of the strip-shaped through groove. When the locking part is in the initial position or the second position, the second limiting part cooperates with the third limiting part. The locking component also includes an elastic element, which is provided in the strip-shaped through groove and provides a pre-tightening force to the second limiting part to cooperate with the third limiting part.

[0010] Furthermore, the inner wall of the strip-shaped channel is provided with an annular flange, and the third limiting part is formed by the side of the annular flange facing the first limiting part and the inner wall of the strip-shaped channel to form a first annular groove. When the locking part is located at one end of the strip-shaped channel, the second limiting part cooperates with the first annular groove. When it is necessary to move the locking part, the locking part is moved outward along the depth direction of the strip-shaped channel to make the second limiting part disengage from the first annular groove. After rotating the second limiting part 180°, the locking part is moved to the other end of the strip-shaped channel, and the second limiting part cooperates with the first annular groove again.

[0011] Furthermore, the inner wall of the strip-shaped channel is provided with an annular flange. The side of the annular flange facing the first limiting part forms a second annular groove with the inner wall of the strip-shaped channel. The second annular groove is provided with a first blocking part at a position corresponding to the middle of the strip-shaped channel. The third limiting part is formed by the first blocking part dividing the second annular groove into two first limiting grooves with the same structure. The second limiting part is adapted to the first limiting groove. When the locking part is located at one end of the strip-shaped channel, the second limiting part cooperates with the first limiting groove corresponding to the current position. When it is necessary to move the locking part, the locking part is moved outward along the depth direction of the strip-shaped channel so that the second limiting part is disengaged from the current first limiting groove. Then, the locking part is moved along the strip-shaped channel to the other end of the strip-shaped channel, and the second limiting part cooperates with the other first limiting groove.

[0012] Furthermore, the inner wall of the strip-shaped channel is provided with an annular flange. On the side of the annular flange away from the first limiting part, a second blocking part is provided at a position corresponding to the middle of the strip-shaped channel. The third limiting part is formed by the second blocking part dividing the annular flange into two second limiting grooves with the same structure. The second limiting part is adapted to the second limiting groove. When the locking part is located at one end of the strip-shaped channel, the second limiting part cooperates with the second limiting groove corresponding to the current position. When it is necessary to move the locking part, the locking part is moved closer to the strip-shaped channel along the depth direction of the strip-shaped channel so that the second limiting part is disengaged from the current second limiting groove. Then, the locking part is moved along the strip-shaped channel to the other end of the strip-shaped channel, where the second limiting part cooperates with the other second limiting groove.

[0013] Furthermore, the locking assembly also includes a base plate, which is movably disposed within the strip groove and located on the side of the annular flange opposite to the first limiting portion. One end of the locking portion is connected and fixed to the base plate, and the elastic element is disposed between the base plate and the annular flange to provide a preload force to the second limiting portion that cooperates with the third limiting portion.

[0014] Furthermore, the inner wall of the strip-shaped channel is provided with a third blocking part corresponding to the bottom plate, and the third blocking part abuts against one side of the bottom plate in the direction of movement.

[0015] Furthermore, the locking assembly also includes a base plate, which is fixed to one end of the strip groove away from the first limiting part. The elastic element is disposed between the base plate and the annular flange to provide a pre-tightening force to the second limiting part that cooperates with the third limiting part. The locking part can drive the elastic element to move along the surface of the base plate.

[0016] The present invention also provides a casement window with a bottom-hung design, comprising:

[0017] window frame;

[0018] The window sash is movably connected to the window frame;

[0019] A transmission assembly, movably fixed to the window sash, includes a handle; and

[0020] In the aforementioned limiting structure, the lock seat is located on the inner side of the window frame and the window sash when they are opened and closed. The locking component is movable up and down on the window sash and on the side corresponding to the lock seat. The locking component is linked with the transmission component and is moved to the preset position by the handle.

[0021] The beneficial effects achieved by this invention are that, by placing the lock seat on the inner side of the window frame and the locking component on the outer side of the window sash, or placing the lock seat on the outer side of the window sash and the locking component on the inner side of the window frame, the lock seat and locking component can be hidden inside the window structure. Whether the window sash is opened or closed in a casement or tilted-down position, the limiting structure can be concealed, and the limiting structure will not affect the overall external structure of the window, thus avoiding any impact on the window's aesthetics. Furthermore, the lock seat or locking component mounted on the window sash is connected to the transmission component, and when the transmission component is operated to the casement position... During the setting process, the lock seat or locking component can be moved to a preset position. This effectively utilizes the transmission components on the existing door and window structure to drive the lock seat or locking component, simplifying the structure and saving production costs. After the lock seat or locking component moves to the preset position, the position of the locking member is changed. When the locking member is in the second position, the cooperation between the locking member and the first limiting part can restrict the opening of the window sash. When the locking member is in the initial position, the locking member separates from the first limiting part, which can release the restriction on the opening of the window sash, thereby achieving the purpose of locking or unlocking the opening function of the window sash. Attached Figure Description

[0022] Figure 1 is a schematic diagram of a casement window in a casement state provided by the present invention.

[0023] Figure 2 is a schematic diagram of the first embodiment of a locking component of a limiting structure provided by the present invention;

[0024] Figure 3 is a cross-sectional view of a first embodiment of a locking component of a limiting structure provided by the present invention;

[0025] Figure 4 is an exploded schematic diagram of a first embodiment of a locking component of a limiting structure provided by the present invention;

[0026] Figure 5 is a schematic diagram of the locking member of the limiting structure provided by the present invention in the initial position, in a state where it can be opened but does not restrict the opening of the window sash.

[0027] Figure 6 is a schematic diagram of the state in which the locking member of the limiting structure provided by the present invention is in the second position and restricts the opening of the window sash in a state that can be opened.

[0028] Figure 7 is a structural schematic diagram of a second embodiment of a locking component of a limiting structure provided by the present invention;

[0029] Figure 8 is a cross-sectional view of a second embodiment of a locking component of a limiting structure provided by the present invention;

[0030] Figure 9 is a structural schematic diagram of a third embodiment of a locking component of a limiting structure provided by the present invention;

[0031] Figure 10 is a cross-sectional view of a third embodiment of a locking component of a limiting structure provided by the present invention;

[0032] Figure 11 is an exploded view of a third embodiment of a locking component of a limiting structure provided by the present invention.

[0033] Explanation of icon numbers:

[0034] 1. Lock seat; 11. First limiting part; 2. Locking assembly; 21. Locking element; 211. Locking part; 212. Second limiting part; 22. Base; 221. Strip groove; 2211. Annular flange; 2212. First blocking part; 2213. Second blocking part; 2214. Third blocking part; 222. Third limiting part; 223. Third annular groove; 224. First connecting part; 23. Elastic element; 24. Base plate; 241. Second connecting part; 10. Limiting structure; 20. Window frame; 30. Window sash; 40. Transmission assembly. Detailed Implementation

[0035] 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 embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] Referring to Figures 1-6, this embodiment of the invention provides a limiting structure 10 for a casement window with a bottom-hung design. The casement window with a bottom-hung design includes a window sash 30, a window frame 20, and a transmission assembly 40. The transmission assembly 40 includes a casement position, a locked position, and a bottom-hung position. The transmission assembly 40 is used to switch the window sash 30 into the casement state, the locked state, or the bottom-hung state. The limiting structure 10 includes a lock seat 1 and a locking assembly 2. The lock seat 1 is provided with a first limiting part 11. The locking assembly 2 is movably provided with a locking member 21 that can cooperate with the first limiting part 11. The lock seat 1 is located on the inner side of the window frame 20, and the locking assembly 2 is movably located on the outer side of the window sash 30. Specifically, the locking assembly 2 can move along the outer side of the window sash 30, and the transmission assembly 40 is connected to the locking assembly 2. Alternatively, the lock seat 1 can be movably located on the outer side of the window sash 30, and specifically, the lock seat 1 can move along the outer side of the window sash 30, while the locking assembly 2 is located on the inner side of the window frame 20. The transmission assembly 40 is connected to the lock seat 1. The locking member 21 has an initial position (see point a in Figure 5) and a second position (see point b in Figure 6) in the direction of movement of the locking assembly 2 or the lock seat 1. When the transmission assembly 40 is in the open position, the transmission assembly 40 drives the locking assembly 2 or the lock seat 1 to the preset position. When the locking member 21 is in the initial position, the locking member 21 is separated from the first limiting part 11, and the window sash can be opened. When the locking member 21 is in the second position, the locking member 21 cooperates with the first limiting part 11, and the first limiting part 11 blocks the locking member 21 so that the window sash 30 cannot be opened.

[0037] By placing the lock seat 1 on the inner side of the window frame 20 and the locking component 2 on the outer side of the window sash 30, or placing the lock seat 1 on the outer side of the window sash 30 and the locking component 2 on the inner side of the window frame 20, the lock seat 1 and the locking component 2 can be hidden inside the window structure. Whether the window sash 30 is opened or closed in the casement or tilted-down position, the limiting structure 10 can be hidden, and the limiting structure 10 will not affect the overall external structure of the window, thus avoiding affecting the aesthetic performance of the window structure. The lock seat 1 or locking component 2 on the window sash 30 is connected to the transmission component 40. When the transmission component 40 is in the casement position... It can drive the lock seat 1 or the locking component 2 to move to a preset position. It can effectively utilize the transmission component 40 on the existing door and window structure to drive the lock seat 1 or the locking component 2, which can simplify the structure and save production costs. After the lock seat 1 or the locking component 2 moves to the preset position, by changing the position of the locking member 21, that is, when the locking member 21 is in the second position, the cooperation between the locking member 21 and the first limiting part 11 can restrict the opening. When the locking member 21 is in the initial position, the locking member 21 separates from the first limiting part 11, which can release the restriction on the opening of the window sash 30, thereby achieving the purpose of locking or unlocking the opening function of the window sash 30.

[0038] Working principle: When locking the window sash 30 when it is not needed is required, the locking member 21 is held in the initial position while the window sash 30 is in the down-hanging state. The down-hanging window sash 30 is closed, and the transmission assembly 40 is moved to the open position to drive the window sash 30 into an openable state. At the same time, the transmission assembly drives the locking assembly 2 or the lock seat 1 to the preset position. At this time, the locking member 21 in the initial position is still separated from the first limiting part 11, and the first limiting part 11 cannot restrict the window sash 30. The window sash 30 can be opened normally. When locking the window sash 30 when it is needed is required, the locking member 21 is switched from the initial position to the second position while the window sash 30 is in the down-hanging state, and the window sash 30 is closed. The window sash 30 is in a suspended state, and the transmission assembly 40 is in the open position to drive the window sash 30 to convert it into an openable state. At the same time, the transmission assembly 40 drives the locking assembly 2 or the lock seat 1 to a preset position. At this time, the locking member 21 in the second position cooperates with the first limiting part 11. When the window sash 30 is open, the first limiting part 11 blocks the window sash 30, making it impossible for the window sash 30 to open. When it is necessary to unlock the window sash 30 from opening, the locking operation is repeated. When the window sash 30 is in a suspended state, the locking member 21 is operated to the initial position, the window sash 30 in the suspended state is closed, and the transmission assembly 40 is in the open position. The window sash 30 can then be opened, completing the unlocking operation of the window sash 30 from opening.

[0039] The limiting structure 10 provided in this embodiment of the invention can restrict the window sash 30 when it is in the open state, preventing the window sash 30 from being opened horizontally. This avoids the safety hazard of children accidentally opening the window sash 30 and falling out of the window. In addition, the limiting structure 10 can be concealed inside the window structure, without being exposed outside the window structure. This ensures the integrity and aesthetics of the window structure and effectively utilizes the transmission structure on the existing door frame structure to transmit power to the lock seat 1 or locking component 2, which simplifies the structure and saves production costs.

[0040] Referring to Figure 1, specifically, the transmission assembly 40 includes a transmission part and a control part. The transmission part is disposed around the window sash 30 and includes a transmission component (not shown in the figure). When the lock seat 1 or locking component 2 is installed on the window sash 30, it is connected to the transmission component. The control part can control the movement of the transmission component. The lock seat 1 or locking component 2 can move in conjunction with the transmission component. In this embodiment, the control part can be a handle. The handle controls the transmission part to move the transmission component. When the transmission assembly 40 is in the open position, locked position, and tilted position, it can correspondingly control the window sash 30 to be in the openable state, locked state, and tilted state, respectively.

[0041] It should be noted that the transmission component 40 is an existing structure on the existing door frame structure, and will not be described in detail here.

[0042] Referring to Figure 6, the first limiting part 11 is a protrusion extending from the surface of the lock seat 1. In the open position, the transmission assembly 40 drives the locking assembly 2 or the lock seat 1 to a preset position. When the locking member 21 is in the second position, the locking member 21 is located on the side of the protrusion away from the opening direction of the window sash 30, so that the first limiting part 11 blocks the window sash 30 from opening. In this way, by blocking the locking member 21 on one side of the window sash 30 in the opening direction by the protrusion, the window sash 30 can be prevented from opening.

[0043] Referring to Figures 2-3, the locking assembly 2 further includes a base 22, which is movably mounted on the window sash 30 or fixed to the window frame 20. When the base 22 is mounted on the window sash 30, it is connected to the aforementioned transmission component. The base 22 has a strip-shaped groove 221 extending along the moving direction of the base 22. The locking member 21 is movably disposed within the strip-shaped groove 221. When the locking member 21 moves to either end of the strip-shaped groove 221, it is in either the initial position or the second position. By providing the strip-shaped groove 221 on the base 22 and placing the locking member 21 within it, moving the locking member 21 within the strip-shaped groove 221 to either end allows the locking member 21 to change between the initial position and the second position.

[0044] Referring to Figures 3-4, the locking component 21 further includes a locking part 211 and a second limiting part 212. The base 22 is provided with a third limiting part 222 that can cooperate with the second limiting part 212. One end of the locking part 211 passes through the strip groove 221, and the other end extends out of the strip groove 221. When the locking part 211 is in the initial position or the second position, the second limiting part 212 cooperates with the third limiting part 222. The locking component 2 also includes an elastic member 23. The elastic member 23 is provided in the strip groove 221 and provides a pre-tightening force to the second limiting part 212 to cooperate with the third limiting part 222. Thus, by providing a second limiting part 212 on the locking member 21 to cooperate with a third limiting part 222 on the base 22, the locking member 21 can remain in the initial position or the second position when its position changes between the initial position and the second position. The elastic member ensures that the second limiting part 212 and the third limiting part 222 are always in a cooperative state in their natural state.

[0045] Referring to Figure 4, further, the inner wall of the strip-shaped through groove 221 is provided with an annular flange 2211. The third limiting part 222 is formed by the side of the annular flange 2211 facing the first limiting part 11 and forming a first annular groove with the inner wall of the strip-shaped through groove 221. When the locking part 211 is located at one end of the strip-shaped through groove 221, the second limiting part 212 is placed in the first annular groove and cooperates with the first annular groove. At this time, the locking part 211 cannot move along the strip-shaped through groove 221, so it can only be kept at one end of the strip-shaped through groove 221 (that is, the locking part 21 is in the initial position or the second position). When it is necessary to move the locking part 211, the locking part 211 is moved outward (i.e. away from the strip groove 221) along the depth direction of the strip groove 221 so that the second limiting part 212 disengages from the first annular groove. After rotating the second limiting part 212 180°, the locking part 211 is moved to the other end of the strip groove 221. The second limiting part 212 engages with the first annular groove again, thereby enabling the locking member 21 to change position between the initial position and the second position and to keep the locking member 21 in the current position.

[0046] Referring to Figures 7-8, in addition, as a second embodiment, an annular flange 2211 can be provided on the inner wall of the strip-shaped through groove 221. The side of the annular flange 2211 facing the first limiting part 11 forms a second annular groove with the inner wall of the strip-shaped through groove 221. The difference between this embodiment and the first embodiment is that: a first blocking part 2212 is provided at a position corresponding to the middle of the strip-shaped through groove 221 in the second annular groove, and the third limiting part 222 is the first blocking part 2212 that divides the second annular groove into two first limiting grooves with the same structure. The limiting part 212 is adapted to the first limiting groove. When the locking part 211 is located at one end of the strip groove 221, the second limiting part 212 cooperates with the first limiting groove corresponding to the current position. When it is necessary to move the locking part 211, the locking part 211 is moved outward along the depth direction of the strip groove (i.e. away from the strip groove 221) so that the second limiting part 212 is disengaged from the current first limiting groove and then the locking part 211 is moved along the strip groove 221 to the other end of the strip groove 221, and the second limiting part 212 cooperates with another first limiting groove. Thus, under the action of the second blocking part 2213, the second limiting part 212 cannot move from the current first limiting groove to another first limiting groove, thereby preventing the locking part 21 from moving from one end of the strip groove 221 to the other end. When the locking part 211 needs to move, the locking part 211 is moved away from the strip groove 221 along the depth direction of the strip groove so that the second limiting part 212 can disengage from the first limiting groove before the locking part 211 is moved. This also enables the locking part 21 to change position between the initial position and the second position and to keep the locking part 21 in the current position.

[0047] Referring to Figures 9-11, in addition to this, as a third embodiment, an annular flange 2211 can be provided on the inner wall of the strip-shaped through groove 221. The difference between this embodiment and the second embodiment is that a second blocking part 2213 is provided on the side of the annular flange 2211 opposite to the first limiting part 11, corresponding to the middle of the strip-shaped through groove 221. The third limiting part 222 is the second blocking part 2213 that divides the annular flange 2211 into two second limiting grooves with the same structure. That is, the second limiting groove and the first limiting groove are located opposite to each other on the annular flange 2211. On one side away, the second limiting part 212 is adapted to the second limiting groove. When the locking part 211 is located at one end of the strip groove 221, the second limiting part 212 cooperates with the second limiting groove corresponding to the current position. When it is necessary to move the locking part 211, the locking part 211 is moved closer to the strip groove 221 along the depth direction of the strip groove 221 so that the second limiting part 212 is disengaged from the current second limiting groove. Then, the locking part 211 is moved along the strip groove 221 to the other end of the strip groove 221, and the second limiting part 212 cooperates with another second limiting groove. Thus, by moving the locking part 211 closer to the strip groove 221 along the depth direction of the strip groove 221 (i.e., the opposite direction to that in Embodiment 2), the second limiting part 212 can also be disengaged from the third limiting part 222, thereby realizing the movement of the locking part 211 within the strip groove 221, achieving the purpose of changing the position of the locking member 21 between the initial position and the second position and keeping the locking member 21 in the current position.

[0048] Referring to Figure 8, based on the above-described Embodiment 1 or Embodiment 2, the locking assembly 2 further includes a base plate 24. The base plate 24 is movably disposed within the strip-shaped through groove 221 and located on the side of the annular flange 2211 opposite to the first limiting part 11. One end of the locking part 211 is connected and fixed to the base plate 24 so that the base plate 24 can move with the locking part 211. An elastic member is disposed between the base plate 24 and the annular flange 2211 to provide a preload force to the second limiting part 212 to cooperate with the third limiting part 222. Thus, with the cooperation of the base plate 24 and the elastic member 23, the locking part 21 can be installed on the base 22. The base plate 24 is movably disposed within the strip-shaped through groove 221 and connected and fixed to the locking part 211. The base plate 24 can move with the locking part 211 without interfering with the movement of the locking part 211.

[0049] Referring to Figures 3 and 4, further, a third blocking part 2214 corresponding to the base plate 24 is provided in the middle of the strip groove 221. The third blocking part 2214 abuts against one side of the base plate 24 in the direction of movement. By providing the third blocking part 2214, when the locking member 21 is held in the initial position or the second position, the abutment between the third blocking part 2214 and the base plate 24 can limit the end of the locking part 211 of the locking member 21 away from the first limiting part 11, thereby improving the stability of the locking member 21 in the current position and thus improving the compactness of the structure.

[0050] Referring to Figures 10-11, in addition to the above embodiment 3, the locking component 2 further includes a base plate 24, which covers and fixes one end of the strip-shaped through groove 221 away from the first limiting part 11. An elastic member is disposed between the base plate 24 and the second annular flange 2211 to provide a pre-tightening force to the second limiting part 212 to cooperate with the third limiting part 222. The locking part 211 can drive the elastic member to move along the surface of the base plate 24. In this way, the cooperation between the base plate 24 and the elastic member can realize the installation of the locking part 21 on the base 22, and the fixing of the base plate 24 and the base 22 will not interfere with the movement of the locking part 211.

[0051] Referring to Figure 11, further, the base 22 has a third annular groove 223 on the side opposite to the first limiting part 11. The third annular groove 223 surrounds the outside of the strip-shaped through groove 221, and the base plate 24 is fixed inside the third annular groove 223. Specifically, the third annular groove 223 has a first connecting part 224, and the base plate 24 has a second connecting part 241. The first connecting part 224 and the second connecting part 241 can be connected by, but are not limited to, threaded connection or riveting connection.

[0052] Specifically, the elastic element can be a helical spring. In the above embodiments one and two, the elastic element is sleeved on the locking part 211 and its two ends abut against the base plate 24 and the annular flange 2211 respectively (see Figures 3 and 8). In the embodiment three, the elastic element is sleeved on the locking part 211 and its two ends abut against the base plate 24 and the second limiting part 212 respectively (see Figure 10). The elastic element can provide a pre-tightening force to the second limiting part 212 to abut against the annular flange 2211, so that the second limiting part 212 and the third limiting part 222 can maintain a fit in their natural state.

[0053] Referring to Figure 1, this embodiment of the invention also provides a casement window with a bottom-hung design, including a window frame 20, a window sash 30, a transmission assembly 40, and the aforementioned limiting structure 10. The window sash 30 is movably fixed to the window frame 20, the transmission assembly is disposed on the window sash 30, a lock seat 1 is disposed on the inner side of the window frame 20, and a locking assembly 2 is movably disposed on the outer side of the window sash. The locking assembly is connected to the transmission assembly, and the transmission assembly drives the locking assembly 2 to a preset position; or the lock seat is movably disposed on the outer side of the window sash, the locking assembly is disposed on the inner side of the window frame, the lock seat is connected to the transmission assembly, and the transmission assembly drives the lock seat to a preset position.

[0054] The casement window provided in this embodiment of the invention can restrict the window sash 30 when it is in the casement state, preventing the window sash 30 from being opened horizontally. This avoids the safety hazard of children accidentally opening the window sash 30 and falling out of the window. In addition, the casement window can also conceal the limiting structure 10 inside the window structure, without exposing it outside the window structure. This ensures the integrity and aesthetics of the window structure and effectively utilizes the transmission structure on the existing door frame structure to transmit power to the lock seat 1 or locking component 2, which simplifies the structure and saves production costs.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A limiting structure for a casement window with a bottom-hung design, the casement window with a bottom-hung design comprising a window sash, a window frame, and a transmission assembly, the transmission assembly comprising a casement position, a locked position, and a bottom-hung position, characterized in that, The limiting structure includes a lock seat and a locking assembly. The lock seat has a first limiting part, and the locking assembly is movably provided with a locking member that can cooperate with the first limiting part. The lock seat is located on the inner side of the window frame, and the locking assembly is located on the outer side of the window sash. The transmission assembly is connected to the locking assembly. Alternatively, the lock seat is located on the outer side of the window sash, and the locking assembly is located on the inner side of the window frame. The transmission assembly is connected to the lock seat. The locking member has an initial position and a second position in the moving direction of the locking assembly or the lock seat. When the transmission assembly is in the open position, the transmission assembly drives the locking assembly or the lock seat to the preset position. When the locking member is in the initial position, the locking member is separated from the first limiting part, and the window sash can be opened. When the locking member is in the second position, the locking member cooperates with the first limiting part, and the first limiting part blocks the locking member, preventing the window sash from opening.

2. The limiting structure as described in claim 1, characterized in that, The first limiting part is a protrusion that protrudes from the surface of the lock seat. In the open position, the transmission assembly drives the locking assembly or the lock seat to a preset position. When the locking member is in the second position, the locking member is located on the side of the protrusion that is away from the window sash opening direction so that the first limiting part blocks the window sash from opening.

3. The limiting structure as described in claim 1, characterized in that, The locking assembly further includes a base, which is movably mounted on the window sash or fixed on the window frame. The base has a strip-shaped through groove that extends along the moving direction of the locking assembly or the lock seat. The locking member is movably disposed within the strip-shaped through groove. When the locking member moves to either end of the strip-shaped through groove, the locking member is in an initial position or a second position.

4. The limiting structure as described in claim 3, characterized in that, The locking component includes a locking part and a second limiting part. The base is provided with a third limiting part that can cooperate with the second limiting part. One end of the locking part passes through the strip-shaped through groove, and the other end extends out of the strip-shaped through groove. When the locking part is in the initial position or the second position, the second limiting part cooperates with the third limiting part. The locking component also includes an elastic element, which is provided in the strip-shaped through groove and provides a pre-tightening force to the second limiting part that cooperates with the third limiting part.

5. The limiting structure as described in claim 4, characterized in that, The inner wall of the strip-shaped channel is provided with an annular flange. The third limiting part is formed by the side of the annular flange facing the first limiting part and the inner wall of the strip-shaped channel to form a first annular groove. When the locking part is located at one end of the strip-shaped channel, the second limiting part cooperates with the first annular groove. When it is necessary to move the locking part, the locking part is moved outward along the depth direction of the strip-shaped channel to make the second limiting part disengage from the first annular groove. After rotating the second limiting part 180°, the locking part is moved to the other end of the strip-shaped channel, and the second limiting part cooperates with the first annular groove again.

6. The limiting structure as described in claim 4, characterized in that, The inner wall of the strip-shaped channel is provided with an annular flange. The side of the annular flange facing the first limiting part forms a second annular groove with the inner wall of the strip-shaped channel. The second annular groove is provided with a first blocking part at a position corresponding to the middle of the strip-shaped channel. The third limiting part is formed by the first blocking part dividing the second annular groove into two first limiting grooves with the same structure. The second limiting part is adapted to the first limiting groove. When the locking part is located at one end of the strip-shaped channel, the second limiting part cooperates with the first limiting groove corresponding to the current position. When it is necessary to move the locking part, the locking part is moved outward along the depth direction of the strip-shaped channel so that the second limiting part is disengaged from the current first limiting groove. Then, the locking part is moved along the strip-shaped channel to the other end of the strip-shaped channel, and the second limiting part cooperates with the other first limiting groove.

7. The limiting structure as described in claim 4, characterized in that, The inner wall of the strip-shaped channel is provided with an annular flange. On the side of the annular flange away from the first limiting part, a second blocking part is provided at a position corresponding to the middle of the strip-shaped channel. The third limiting part is the second blocking part that divides the annular flange into two second limiting grooves with the same structure. The second limiting part is adapted to the second limiting groove. When the locking part is located at one end of the strip-shaped channel, the second limiting part cooperates with the second limiting groove corresponding to the current position. When it is necessary to move the locking part, the locking part is moved closer to the strip-shaped channel along the depth direction of the strip-shaped channel so that the second limiting part is disengaged from the current second limiting groove. Then, the locking part is moved along the strip-shaped channel to the other end of the strip-shaped channel, where the second limiting part cooperates with the other second limiting groove.

8. The limiting structure as described in claim 5 or 6, characterized in that, The locking assembly further includes a base plate, which is movably disposed within the strip groove and located on the side of the annular flange opposite to the first limiting portion. One end of the locking portion is connected and fixed to the base plate. The elastic element is located between the base plate and the annular flange to provide a preload force to the second limiting portion that cooperates with the third limiting portion.

9. The limiting structure as described in claim 8, characterized in that, The inner wall of the strip-shaped through groove is also provided with a third blocking part corresponding to the bottom plate, and the third blocking part abuts against one side of the bottom plate in the direction of movement.

10. The limiting structure as described in claim 7, characterized in that, The locking assembly further includes a base plate, which is fixed to one end of the strip groove away from the first limiting part. The elastic element is located between the base plate and the annular flange to provide a pre-tightening force to the second limiting part that cooperates with the third limiting part. The locking part can drive the elastic element to move along the surface of the base plate.

11. A casement window with a bottom-hung design, characterized in that, include: Window frame; window sash, movably fixed to the window frame; transmission assembly, disposed on the window sash; And the limiting structure as described in any one of claims 1-10, wherein the locking seat is disposed on the inner side of the side of the window frame, the locking component is disposed on the outer side of the side of the window sash, and the locking component is connected to the transmission component; or, the locking seat is disposed on the outer side of the side of the window sash, the locking component is disposed on the inner side of the side of the window frame, and the locking seat is connected to the transmission component.

Images