Limiting lock box for doors and windows

Abstract

The utility model discloses a limit lock box for doors and windows, which comprises a shell and limit pieces oppositely arranged at two ends of the shell, the limit pieces are movably connected to the shell, each limit piece comprises a locking part and a pushed part, and when the pushed parts are subjected to external force, the locking parts are locked by the limit pieces. The locking part corresponding to the pushed part can move towards the shell or the outside of the shell, and when the external force is removed, the locking part can be reset.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, in particular to a limit lock box for doors and windows. Background Art

[0002] Most doors and windows currently on the market are designed to open only from one side. To provide a better user experience, there's a need for doors and windows that can open in opposite directions. This design allows users to choose which side to open based on their needs, improving flexibility and convenience. However, achieving this opposite-direction opening typically requires the use of two sliding supports.

[0003] To improve the safety of doors and windows while achieving opposite-direction opening, a safe and reliable position-limiting device is required. Existing position-limiting lock boxes are often complex, prone to malfunction, and pose potential safety risks during use. In particular, improper design can lead to misoperation when adjusting the position of the sliding support, compromising the safety and stability of the doors and windows. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a limit lock box for doors and windows.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A limit lock box for doors and windows includes a shell and limit members arranged at both ends of the shell, wherein the limit members are movably connected to the shell and include a locking portion and a pushed portion. When the pushed portion is subjected to an external force, the locking portion corresponding to the pushed portion can move toward the shell or outside the shell, and when the external force is removed, the locking portion can be reset.

[0007] Furthermore, there are two limiting members, which are respectively arranged at both ends of the shell, and the pushed surfaces of the pushed parts are arranged opposite to each other. When external force acts on the pushed surfaces, the locking parts corresponding to the pushed surfaces move toward the shell.

[0008] Furthermore, it also includes a force-applying member for pushing the pushed surface, and the force-applying member can move between the two pushed surfaces and can push the pushed surface; the space between the two pushed surfaces is the extended space, and when the force-applying member is in the middle position of the extended space, it does not abut against the pushed surfaces on both sides.

[0009] Furthermore, the two limiting members are staggered, and the locking portions, the pushed portions and the force-applying members at both ends are located in a straight line.

[0010] Furthermore, a limiting structure is provided between the locking portion and the pushed portion, and when the pushed portion of one of the limiting members is pushed, the limiting structure can limit the movement of the other limiting member.

[0011] Furthermore, the limiting structure includes a first limiting surface provided on the pushed portion, and a second limiting surface provided on the locking portion, and movement trajectories of the first limiting surface and the second limiting surface have overlapping portions.

[0012] Furthermore, the shell includes a bottom shell and an upper cover sealed on the bottom shell. The limiting member is slidably connected to the inside of the bottom shell, and an elastic member is provided between the limiting member and the shell.

[0013] Furthermore, the shell is provided with a mounting and fixing structure.

[0014] The beneficial effects of the present invention are: the present invention has a simple structure, a low error rate and high reliability; sliding supports are correspondingly provided on both sides of the limit lock box; only the limit state of the sliding support and the limit lock box on one side can be changed; the limit states of the sliding supports on both sides cannot be changed at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0017] Figure 2 This is a structural diagram of Example 1 of the present invention without the window frame and sash frame;

[0018] Figure 3 This is a schematic diagram of the exploded structure of Example 1 of the present invention without the window frame and sash frame;

[0019] Figure 4 This is the utility model embodiment 1 Figure 3 A partial enlarged view of point A in the middle;

[0020] Figure 5 This is a structural diagram of the sliding support in the expanded state in Example 1 of the present invention;

[0021] Figure 6 This is a schematic structural diagram of the position-limiting lock box in Example 1 of the present utility model;

[0022] Figure 7 This is a schematic diagram of the exploded structure of the limit lock box in Example 1 of the present utility model;

[0023] Figure 8 This is a structural diagram of Example 2 of the present utility model without the window frame and sash frame;

[0024] Figure 9 It is a structural schematic diagram of Example 3 of the present utility model without the window frame and the sash frame. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] Example 1

[0027] Reference Figures 1 to 7 As shown, a door and window that can be opened in opposite directions includes: a window frame 1, fixedly connected to a wall; a window sash 2, openably connected to the window frame 1, the window sash 2 includes a sash frame 22 and glass, preferably, the glass is hollow glass, which has better heat insulation and sound insulation performance; at least two connecting parts, which have left-opening state and right-opening state, and the window sash 2 is connected to the window frame 1 through the connecting parts; and a control handle 3, which is provided on the window sash 2 or the window frame 1, preferably, the control handle 3 is provided on the window sash 2; wherein, the control handle 3 can control the state switching of the connecting part so that the two opposite sides of the window sash 2 can be opened selectively. Specifically, this embodiment can be set to open in the upward, downward, left, or right direction according to needs, and can only be opened in one direction.

[0028] Compared to existing doors and windows that only support single-side opening, this embodiment provides a design that allows for dual-side opening. This design allows users to flexibly choose which side of the door or window to open based on the actual usage environment. For example, users can choose to close the windward side and open the leeward side to reduce the impact of wind pressure on the door or window; or choose to open the other side when the air intake is too high or too low; or when privacy is required, the user can choose to open the side according to the actual situation, thereby improving flexibility and convenience.

[0029] The connecting member can be a sliding support 4 or a hinge. If the connecting member is a sliding support 4, a left and a right sliding support 4 can be respectively set at the upper and lower ends of the window sash 2. Preferably, the left and right sliding supports 4 are symmetrically arranged at the two ends of the window sash 2. When the window sash 2 needs to be opened to the left, the right sliding support 4 is locked and connected to the window sash 2 by controlling the handle 3, and the left sliding support 4 is disconnected from the window sash 2. In this state, the window sash 2 can be opened to the left when the connecting member is in the left-opening state. If the window sash 2 needs to be opened to the right, the window sash 2 needs to be closed first, and then the state of the connecting member is switched by controlling the handle 3 so that the connecting member switches to the state opposite to the state when opening to the left, and the window sash 2 can be opened to the right. It is understandable that the left and right sliding supports 4 can share a support rod 41 and a window edge rod 42, that is, the left and right sliding supports 4 are designed as one sliding support 4; the control handle 3 can be one or two. When there are two control handles 3, the left and right sliding supports 4 are controlled separately.

[0030] In some embodiments, there is one control handle 3, which can control the opening of the window sash 2 in both directions. The control handle 3 controls the connection between the left and right sliding supports 4 and the window sash 2 by adjusting the gears. To facilitate the opening of the window sash 2 in both directions, a fixed handle can be provided on the side where the control handle 3 is not provided. In other words, the control handle 3 switches the connection state, and the window sash 2 can then be pushed outward using the control handle 3 or the fixed handle to complete the window opening operation.

[0031] In some embodiments, the control handle 3 has three control gear positions: locked, one-side open, and other-side open. In this embodiment, a control handle 3 that can be switched between forward and reverse gear positions (forward and reverse means that it can rotate clockwise and counterclockwise) can be selected. When the control handle 3 is in the locked gear position, rotating the control handle 3 clockwise can switch to the one-side open gear position, thereby controlling the opening of one side of this embodiment; when the control handle 3 is in the locked gear position, rotating the control handle counterclockwise can switch to the other-side open gear position, thereby controlling the opening of the other side of this embodiment.

[0032] In some embodiments, the connector includes a left connector and a right connector, and one end of the connector is fixedly connected to one of the window sash 2 or the window frame 1, and the other end of the connector is connected to the other of the window sash 2 or the window frame 1 via a detachable structure. Preferably, the connector is fixedly connected to the window frame 1, and the connector is connected to the window sash 2 via a detachable structure.

[0033] The detachable structure has a detached position and a connected position. The control handle 3 can control the detachment / connection of the connecting member from the window frame 1 or the window sash 2. Specifically, if the left connecting member of the window sash 2 is in the detached position and the right connecting member is in the connected position, the window sash 2 can be opened on one side of the left connecting member. That is, the window sash 2 can be detached from the left connecting member and opened by the connection support with the right connecting member. By switching the gear position of the control handle 3, the other side can be opened.

[0034] In some embodiments, a locking member 5 is further included. There are multiple locking members 5, and the locking members 5 are provided at least on two opposite sides of the window sash 2 and the window frame 1. Preferably, the locking members 5 are provided on two opposite sides and are symmetrically arranged at both ends of a single side. The locking member 5 includes a locking point 51 fixedly connected to the window frame 1, and a lock column 52 movably provided on the window sash 2. When the window sash 2 is in the closed state, the lock column 52 is locked with the locking point 51; when the window sash 2 is in the open state, the lock column 52 is disengaged from the lock point 51. The lock column 52 is columnar. When the window sash 2 is in the closed state, the lock column 52 protrudes toward the window frame 1. The lock point 51 is fixedly connected to the window frame 1 and is provided with a lock block 53 extending toward the lock column 52. The lock block 53 is provided on the outside of the lock column 52 and has an inwardly concave arc surface. When the window sash 2 is in the closed state, the lock block 53 can restrict the window sash 2 from opening. When it is necessary to open this embodiment, the handle 3 can be controlled to switch to the opening position (the position on one side or the other side). At this time, the lock column 52 is driven by the transmission member, and the lock column 52 is dislocated from the locking point 51, and the window sash 2 can be pushed outward to open.

[0035] In some embodiments, the connecting member is a sliding support 4, which is provided with a detachable structure. The sliding supports 4 are respectively provided at both ends of the bottom and / or top of the window sash 2. In this embodiment, the connecting member is provided at the bottom and top of the window sash 2, and sliding supports 4 are provided at both ends of the bottom and top, respectively. The left and right sliding supports 4 can be divided into left and right sliding supports 4, and both left and right sliding supports 4 are provided with a detachable structure. In this embodiment, the sliding supports 4 can be selected according to actual needs to adjust the opening angle to suit different climate conditions and usage habits.

[0036] [Sliding support 4]

[0037] Reference Figure 5As shown, the sliding support 4 includes a window sill rod 42 connected to the window frame 1 and a support rod 41 connected to the window sash 2. A hinged connection is formed between the support rod 41 and the window sill rod 42. The window sill rod 42 or the support rod 41 is provided with a detachable structure comprising a locking portion 43 and a detaching portion 44, which allows the detachable structure to be locked and detached from the window frame 1 or the window sash 2. In this embodiment, the detachable structure is provided on the support rod 41, which allows the support rod 41 to be locked and detached from the window sash 2. The support rod 41 has a bent portion 45 along its length, which strengthens the support rod 41. Specifically, the window sash 2 has a latch 21, which is movably provided on the window sash 2. The latch 21 is controlled by switching the position of the handle 3, causing the latch 21 to move to the locking portion 43 or the detaching portion 44. When the latch 21 moves to the detaching portion 44, the sliding support 4 can be detached from the window sash 2. In this embodiment, the sliding supports 4 are divided into left and right sliding supports 4, which are respectively connected to the two sides of the window sash 2. When one sliding support 4 is disconnected from the window sash 2 and the other sliding support 4 is connected to the window sash 2, the window sash 2 can be pushed outward on one side to open. Similarly, by using the control handle 3 to switch the connection between the left and right sliding supports 4 and the window sash 2, the window sash 2 can be pushed outward on the other side to open.

[0038] The sliding support 4 of this embodiment has a detachable structure. Through this innovative design, the sliding support 4 can be easily disconnected from or connected to the window sash 2 or the window frame 1, thereby realizing the function that both sides of the window sash 2 can be opened independently.

[0039] In some embodiments, the detachable structure is provided on the support rod 41. With such a design, the sliding support 4 can be detached from the window sash 2, and the sliding support 4 will not be taken out when the window sash 2 is opened outwards.

[0040] In some embodiments, there are at least two detachable structures. Such a design can enhance the connection stability between the sliding support 4 and the window sash 2, and prevent the two from becoming loose or easily detached when connected.

[0041] In some embodiments, the detachable structure is an L-shaped notch. Such a design is simple in structure, stable and reliable, and is convenient for detaching and locking with the window sash 2.

[0042] In some embodiments, the hinge connection member includes: a long rod 46, one end of which is hinged to the window edge rod 42, and the other end of which is hinged to the support rod 41; a slider 49, which is slidably connected to the window edge rod 42;

[0043] The short rod 47 has one end hinged to the slider 49 and the other end hinged to the support rod 41; and the middle rod 48 has one end hinged to the middle of the long rod 46 and the other end hinged to the slider 49. Specifically, the window edge rod 42 has a sliding groove, the slider 49 is slidably connected to the sliding groove, one end of the short rod 47 is hinged to the slider, and the other end of the short rod 47 is hinged to the support rod 41.

[0044] In some embodiments, the long rod 46 is staggered with the short rod 47 and the middle rod 48. The staggered arrangement ensures that the long rod 46, the short rod 47 and the middle rod 48 do not interfere with each other when they move.

[0045] In some embodiments, a gasket is provided at each hinge of the long rod 46, the middle rod 48 and the short rod 47. Such a design can reduce friction at the hinge and extend the service life of this embodiment.

[0046] In some embodiments, in the extended state, a limiting portion 411 is provided at the end of the support rod 41 that is farther from the window edge rod 42. Specifically, the end of the limiting portion 411 is bent with an opening in the bend. The opening cooperates with the limit lock box 6 or other limiting mechanism to limit the extension of the sliding support 4.

[0047] In some embodiments, a transmission member is further included, which is linked to the control handle 3, and the control handle 3 controls the connecting member through the transmission member. The transmission member includes a limit link 71, a corner adjuster 72, a corner adjuster slider 73, and a limit bar 74. In this embodiment, the control handle 3 is located in the middle of one side of the window sash 2. The two ends of the control handle 3 are connected to the transmission member, which is arranged along the edge of the sash frame 22. The transmission member receives power from the control handle 3 and transmits it to the connection between the window sash 2 and the connecting member through the transmission member, thereby disconnecting / connecting the connecting member from the window frame 1 or the window sash 2. The corner turner 72 is arranged at the corner of the fan frame 22. One end of the corner turner 72 is directly or indirectly connected to the control handle 3, and the other end is connected to the corner turner slider bar 73. The corner turner slider bar 73 can be directly or indirectly connected to multiple clamping columns 21. The multiple clamping columns 21 are respectively connected to the detachable structure of the connecting part. The detachable structure is an "L"-shaped notch. The end of the clamping column 21 is provided with a flange, which can prevent the clamping column 21 from detaching from the detachable structure in the longitudinal direction. Such a design has higher safety.

[0048] Specifically, the telescopic end of the control handle 3 is connected to one end of the cornering device 72 via a limit link 71 and a cornering device slider bar 73. The other end of the cornering device 72 is connected via a cornering device slider bar 73, a limit bar 74, another cornering device slider bar 73, and one end of another cornering device 72. The other end of the cornering device 72 is connected to a cornering device slider bar 73. Locking posts 52 are directly or indirectly provided on the cornering device slider bars 73 on the left and right sides of the window sash 2, and locking points 51 are provided at corresponding positions on the window frame 1. In this embodiment, the cornering device slider bars on the upper and lower sides of the window sash 2 are connected to corner locking sliders 76, which are provided with locking posts 21.

[0049] By switching the gear of the control handle 3, the telescopic end of the control handle 3 is extended or retracted, and the locking column 52 and the clamping column 21 are driven to move by the transmission member, so that the window sash 2 has three working states: lockable, one-side open and the other open.

[0050] [Limit lock box 6]

[0051] Reference Figure 6 and Figure 7 As shown, in some embodiments, a limit lock box 6 is further included, which includes a shell 61 and limit members 62 relatively arranged at both ends of the shell 61, the limit members 62 being movably connected to the shell 61, and the limit members 62 including a locking portion 63 and a pushed portion 64; the sliding support 4 includes a left-opening sliding support 4 and a right-opening sliding support 4, the sliding support 4 includes a window sill rod 42 connected to the window frame 1, and a supporting rod 41 connected to the window sash 2, a hinge connection is connected between the supporting rod 41 and the window sill rod 42, the detachable structure is provided on the supporting rod 41, and when the sliding support 4 is in the open state, the end of the supporting rod 41 that is farther away from the window sill rod 42 is provided with a limit portion 411, and the limit portion 411 matches the locking portion 63. When the locking portion 63 is locked with the limit portion 411 on one side, the sliding support 4 can be limited from opening.

[0052] Specifically, the limit lock box 6 includes a housing 61 and limit members 62 disposed at opposite ends of the housing 61. The limit members 62 are movably connected to the housing 61 and include a locking portion 63 and a pushed portion 64. When the pushed portion 64 is subjected to an external force, the locking portion 63 corresponding to the pushed portion 64 can move toward the housing 61 or outside the housing 61. When the external force is removed, the locking portion 63 can be reset. In this embodiment, the limit member 62 is slidably connected to the housing 61. The locking portion 63 is used to engage with the limiting portion 411 of the sliding support 4 to limit the sliding support 4 from expanding. The pushed portion 64 is used to receive external force to engage or disengage the locking portion 63 with the limiting portion 411 to limit the movement of the sliding support 4. The external force can be from a limit bar 74. The limit bar 74 is provided with a force applying member 741. The force applying member 741 pushes the pushed portion 64 to engage or disengage the locking portion 63 with the limiting portion 411. Preferably, the limit lock box 6 is normally engaged with the limiting portion 411 to limit the movement of the sliding support 4 .

[0053] The limit lock box 6 of this embodiment has a simple structure, a low error rate and high reliability. Slide supports 4 are correspondingly provided on both sides of the limit lock box 6. Only the limit state of the slide support 4 and the limit lock box 6 on one side can be changed, and the limit states of both sides and the slide support 4 cannot be changed at the same time.

[0054] It can be understood that the limit lock box 6 is not only used to limit the sliding support 4, but can also be used to limit other movable parts.

[0055] In some embodiments, there are two limiting members 62, which are respectively arranged at the two ends of the shell 61. The pushed surfaces 65 of the pushed portion 64 are arranged opposite to each other. When an external force acts on the pushed surfaces 65, the locking portion 63 corresponding to the pushed surfaces 65 moves toward the shell 61. Specifically, the pushed portion 64 is provided with a pushed surface 65, and the pushed surfaces 65 of the two pushed portions 64 are arranged opposite to each other. The force-applying member 741 of the limiting bar 74 is arranged between the two pushed surfaces 65. When the force-applying member 741 moves, it can only push one of the pushed surfaces 65. In this embodiment, when the pushed portion 64 is not pushed, the corresponding locking portion 63 engages with the limiting portion of the sliding support 4 to limit the sliding support 4 from being opened. Such a design of this embodiment can prevent the sliding supports 4 on both sides from being opened at the same time.

[0056] In some embodiments, a force-applying member 741 is further included for pushing the pushed surfaces 65. The force-applying member 741 is movable between the two pushed surfaces 65 and can push the pushed surfaces 65. The space between the two pushed surfaces 65 is referred to as the extended travel space 66. When the force-applying member 741 is in the middle of the extended travel space 66, it does not contact the pushed surfaces 65 on either side. Specifically, the distance between the two pushed surfaces 65 is greater than the width of the force-applying member 741, so that when in the middle, the force-applying member 741 does not contact the pushed surfaces 65 on either side. The space between the two pushed surfaces is referred to as the extended travel space 66. The travel of the force-applying member 741 is greater than the travel of the stop member 62. This means that the force-applying member 741 cannot push the stop member 62 at the beginning of its movement and must move a certain distance before it can push the stop member 62. This design prevents the stop member 62 from prematurely locking or disengaging from the sliding support 4 before the control handle 3 is fully switched.

[0057] In some embodiments, the two limiting members 62 are staggered, with the locking portions 63, the pushed portion 64, and the force-applying member 741 at each end located in a straight line. Specifically, the locking portions 63 at each end have corners and protrude outward from the housing 61. Furthermore, the limiting members 62 are staggered, with the pushed surfaces 65 at each end facing each other. The force-applying member 741 is positioned between the two pushed surfaces 65, and the pushed surfaces 65, the locking portion 63, and the force-applying member 741 all move in a straight line. This design ensures more reasonable force distribution and prevents slippage.

[0058] In some embodiments, a limiting structure is provided between the locking portion 63 and the pushed portion 64. When the pushed portion 64 of one of the limiting members 62 is pushed, the limiting structure can limit the movement of the other limiting member 62. Specifically, the movement paths of the pushed portion 64 of one limiting member 62 and the locking portion 63 of the other limiting member 62 partially overlap. When the pushed portion 64 is pushed, the locking portion 63 of the other limiting member 62 can be blocked from moving.

[0059] In some embodiments, the restraining structure includes a first restraining surface 67 provided on the pushed portion 64 and a second restraining surface 68 provided on the locking portion 63. The movement paths of the first and second restraining surfaces 67, 68 overlap. Specifically, the first and second restraining surfaces 67, 68 are positioned opposite each other, and when viewed in the transverse direction, their projected areas overlap. This embodiment provides enhanced security, allowing for unilateral control of the locking portion 63 and preventing failure of the locking portion 63 to reset.

[0060] In some embodiments, the housing 61 includes a bottom housing and an upper cover covering the bottom housing. The limiter 62 is slidably connected to the interior of the bottom housing, and an elastic member 69 is provided between the limiter 62 and the housing 61. The elastic member 69 is used to reset the limiter 62 and can be a spring, a compression spring, a spring sheet, or a structure with elastic force.

[0061] In some embodiments, the housing 61 is provided with a mounting and fixing structure. In this embodiment, the mounting and fixing structure is a fastener hole 691 through which a screw is fixed to the fan frame 22.

[0062] In some embodiments, an anti-misoperation switch 8 is further included. The anti-misoperation switch 8 includes an anti-misoperation base 81 fixedly mounted on the window sash 2 and a stopper 82 movably connected to the anti-misoperation base 81. The stopper 82 has a first position that allows the transmission member to transmit the transmission, and a second position that blocks the transmission member from transmitting the transmission. When the window sash 2 is closed with the window frame 1, the stopper 82 is in the first position; when the window sash 2 is opened, the stopper 82 is in the second position. Specifically, the stopper link 71 is provided with a limit protrusion 711. When the window sash 2 is closed with the window frame 1, the stopper 82 is in the first position, allowing the limiter link 71 to slide within the anti-misoperation switch 8. When the window sash 2 is opened, the stopper 82 is in the second position, blocking the limit protrusion 711, thereby restricting the limiter link 71 from sliding within the anti-misoperation switch 8. This embodiment prevents the window sash 2 from switching the gear position of the control handle 3 when it is open, and prevents the window sash 2 from falling off the connector.

[0063] Example 2

[0064] [Limiting structure]

[0065] Reference Figure 8As shown, the main difference between Example 2 and Example 1 is that it also has a limiting structure, which includes: a corner adjuster 72, which includes an "L"-shaped corner adjuster body, and a connecting slider 1 and a connecting slider 2 movably connected at both ends of the corner adjuster body, and the connecting slider 1 and the connecting slider 2 can be extended or retracted in the corner adjuster body; a sliding support 4, which is provided with a detachable structure, and is directly or indirectly connected to the connecting slider 2 through the detachable structure; a locking member 1 721, which is directly or indirectly fixedly connected to the connecting slider 1 and can move together with the connecting slider 1; and a locking member 2 722, which is directly or indirectly fixedly connected to the sliding support 4; wherein, when the connecting slider 1 moves toward the corner adjuster 72, the locking member 1 721 is locked with the locking member 2 722, and the sliding support 4 is locked and connected to the connecting slider 2; when the connecting slider 2 moves toward the outside of the corner adjuster 72, the locking member 1 721 and the locking member 2 722 are unlocked, and the sliding support 4 can be detached from the connecting slider 2. When the lock member 1 721 and the lock member 2 722 are in the locked state, they can prevent the clamping column 21 from being separated from the sliding support 4 . The gear position of the control handle 3 needs to be switched to separate the lock member 1 721 and the lock member 2 722 .

[0066] When locked, lock piece 1 721 and lock piece 2 722 can effectively limit the disengagement of the sliding support 4 and the locking column 21, thereby preventing the window from opening unexpectedly, improving the safety of the system, and only by switching the gear position of the control handle 3 can lock piece 1 721 and lock piece 2 722 be disengaged, further enhancing the overall safety.

[0067] In some embodiments, the detachable structure is an L-shaped notch. The connecting slider 2 is directly or indirectly provided with a latch 21 that mates with the notch. The latch 21 can be locked or released from the notch. The latch 21 is terminated with a retaining tab, which can be a flange. This tab prevents the latch 21 from detaching from the notch in the longitudinal direction, thereby enhancing the stability of the connection between the latch 21 and the sliding support 4.

[0068] In some embodiments, the sliding support 4 includes a window edge rod 42 connected to the window frame 1, and a support rod 41 connected to the window sash 2. A hinge connection is connected between the support rod 41 and the window edge rod 42, and the detachable structure is arranged on the support rod 41.

[0069] In some embodiments, the first lock 721 is positioned on the outside of the corner turner body near the corner, and the second lock 722 is positioned at the end of the slide 4. Specifically, the second lock 722 is positioned at the end of the slide 4 near the corner of the corner turner 72. The second lock 722 is a locking pin, and the first lock 721 is a locking pin sleeve. The locking pin sleeve has a hole facing the locking pin. This simple and ingenious design ensures a stable connection between the first and second locks 721 and 722.

[0070] In some embodiments, the cross-section of the locking pin sleeve gradually decreases as the distance from the pin increases. Specifically, along the longitudinal direction, the locking pin sleeve gradually decreases from bottom to top. This design can save material for the locking pin sleeve and improve economic benefits.

[0071] In some embodiments, the end of the locking pin has a guide structure 723. This guide structure 723 can be a chamfer or rounded corner on the end edge of the locking pin, or the locking pin can be configured as a cylinder that tapers from bottom to top in the longitudinal direction. The guide structure 723 allows the locking pin sleeve to fit smoothly onto the locking pin.

[0072] Example 3

[0073] Reference Figure 9 As shown, the main difference between Example 3 and other examples is that the connecting member is a hinge, which is arranged on opposite sides of the window sash 2. The hinge includes a half hinge 91 arranged on the window sash 2 and a half hinge 92 arranged on the window frame 1. The half hinge 91 and the half hinge 92 are provided with an engageable hinge structure relative to each other, and the handle can control the engagement or separation of the half hinge 91 and the half hinge 92. One of the half hinge 91 and the half hinge 92 has a cylindrical pin, and the other of the half hinge 91 and the half hinge 92 has a hole. When the half hinge 91 and the half hinge 92 are engaged, the cylindrical pin is inserted into the hole, and the half hinge 91 and the half hinge 92 are hinged. The half hinge 91 is connected to the transmission member of the sash frame 22, and the half hinge 91 and the half hinge 92 can be controlled to engage or separate by switching the gear of the control handle 3.

[0074] It can be understood that the round pin is movably arranged on the half hinge 1 91 or the half hinge 2 92, and the control handle 3 can control the round pin to extend or retract in the half hinge 1 91 or the half hinge 2 92, thereby realizing the connection or separation of the half hinge 1 91 and the half hinge 2 92.

[0075] The hinges can be divided into left and right hinges. When the control handle 3 is in the locking position, the left and right hinges can be engaged or disengaged; when the control handle 3 is switched to the gear position for opening on one side, the left hinge is in the engaged state and the right hinge is in the disengaged state, and the window sash 2 can be opened on one side; when the window sash 2 is closed, when the control handle 3 is switched to the gear position for opening on the other side, the left hinge is in the disengaged state and the right hinge is in the engaged state, and the window sash 2 can be opened on the other side.

[0076] The present invention utilizes a control handle 3 to enable opening of the window sash 2 on opposite sides. Specifically, the connecting member is not limited to a sliding brace 4, hinge, or hinge; other types of connecting members are also acceptable, as long as the window sash 2 or window frame 1 can be disconnected from the connecting member by operating the control handle 3. Therefore, the present invention is not limited to enabling opening on opposite sides; it can also enable opening on adjacent sides. Furthermore, a control handle 3 with multiple positions can be used, combined with connecting members on multiple sides, to achieve multi-side opening.

[0077] The utility model can be used together with a screen and a window support.

[0078] It should be noted that, in order to facilitate the clear description of the invention concept, the present invention is described using windows as an example. However, in fact, the present invention is also applicable to the field of door technology, that is, to achieve multi-side opening of doors through a similar control mechanism.

[0079] The above implementation methods cannot limit the protection scope of the present invention. Equal modifications and changes made by those skilled in the art without departing from the overall concept of the present invention are still within the scope of the present invention.

Claims

1. A limit lock box for doors and windows, characterized in that: It includes a shell and limiting members relatively arranged at both ends of the shell, the limiting members are movably connected to the shell, and the limiting members include a locking part and a pushed part, wherein when the pushed part is subjected to external force, the locking part corresponding to the pushed part can move toward the shell or outside the shell, and when the external force is removed, the locking part can be reset.

2. The limit lock box for doors and windows according to claim 1, characterized in that: There are two limiting members, which are respectively arranged at both ends of the shell. The pushed surfaces of the pushed parts are arranged opposite to each other. When external force acts on the pushed surfaces, the locking parts corresponding to the pushed surfaces move toward the shell.

3. The limit lock box for doors and windows according to claim 2, characterized in that: It also includes a force-applying member for pushing the pushed surface, which can move between the two pushed surfaces and push the pushed surface; the space between the two pushed surfaces is an extended space, and when the force-applying member is in the middle position of the extended space, it does not abut against the pushed surfaces on both sides.

4. The limit lock box for doors and windows according to claim 3, characterized in that: The two limiting members are staggered, and the locking portions, the pushed portions and the force applying members at both ends are located in a straight line.

5. The limit lock box for doors and windows according to claim 2, characterized in that: A limiting structure is provided between the locking portion and the pushed portion. When the pushed portion of one of the limiting members is pushed, the limiting structure can limit the movement of the other limiting member.

6. The limit lock box for doors and windows according to claim 5, characterized in that: The limiting structure includes a first limiting surface provided on the pushed portion and a second limiting surface provided on the locking portion, and movement tracks of the first limiting surface and the second limiting surface have an overlapping portion.

7. The limit lock box for doors and windows according to claim 1, characterized in that: The shell comprises a bottom shell and an upper cover sealed on the bottom shell. The limiting member is slidably connected to the inside of the bottom shell, and an elastic member is provided between the limiting member and the shell.

8. The limit lock box for doors and windows according to claim 1, characterized in that: The housing is provided with a mounting and fixing structure.

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