Micro-ventilation door and window system safe to use

Abstract

The utility model belongs to the technical field of doors and windows, and discloses a micro-ventilation door and window system safe to use. A window sash; a driver; a handle structure; a first locking structure; and a second locking structure. State switching is carried out by controlling the rotating angle of the rotating handle, when the first locking structure is unlocked and the second locking structure is locked, a micro-ventilation state is achieved, and the window sash can only be partially opened; when the first locking structure and the second locking structure are both unlocked, the window sash is in a normal opening state, and the window sash can be completely opened, so that the curiosity that a child operates the handle structure to open the window sash can be met, potential safety hazards are reduced, and the use safety of a door and window system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, in particular to a micro-ventilation door and window system with safe use. Background Art

[0002] With the increase in the height of residential buildings, there are safety hazards if children open windows by themselves when staying at home. To prevent children from opening windows, the existing solutions are as follows: 1. Configure a safety handle on the door and window system; 2. Set a micro-ventilation structure on the door and window system; 3. Set up a guardrail for the door and window system.

[0003] Most of the safety handles on the market cannot be rotated without releasing the safety. If it cannot be rotated, it will more arouse children's competitiveness and curiosity, easily cause children to forcibly operate the safety handle and damage the safety handle, or pay attention to observing the way adults release the safety, so as to learn to release the safety and open the window by themselves. Micro-ventilation is mainly used to limit the opening width of the window sash so that children cannot climb out of the window. And all micro-ventilation products need to have the function of releasing micro-ventilation, and the release methods include child locks or special tools, etc., which are more cumbersome to use. The guardrail is to directly install railings on the window frame, completely blocking the passage for going out, but the cost is relatively high and the view is affected.

[0004] Chinese Patent CN218029647U discloses a pull rod reset mechanism of a micro-ventilation device and the micro-ventilation device, including: a pull rod seat for fixedly connecting with a rotating fan body, a pull rod slot is arranged on the pull rod seat, and a protruding shaft connecting part is arranged in the pull rod slot; a pull rod, including a rod body, a rotating connecting part fixed at one end of the rod body and a sliding sleeve connecting part fixed at the other end of the rod body, the rotating connecting part is rotatably connected with the shaft connecting part so that the rod body is embedded in or extends out of the pull rod slot; and an elastic pulling and resetting member, one end of which is fixedly connected with the pull rod seat, and the other end bypasses the shaft connecting part and is connected with the pull rod to maintain the pull rod in the pull rod slot; wherein, when the rod body extends out of the pull rod slot, the elastic pulling and resetting member is stretched. However, in the above pull rod reset mechanism, the pull rod seat is used for fixedly connecting with a rotating fan body (such as a window sash), and multiple components are connected and fixed on the pull rod seat, resulting in inconvenient disassembly and assembly. Thus, the pull rod seat limits the pull rod to rotate only on one side, unable to achieve universal left and right assembly, and also unable to achieve the pull rod staying at different positions, having limitations in use.

[0005] Chinese Patent CN117365191A discloses a rotatable press-type safety handle. Through the added rotatable function, the handle can be operated but the window cannot be opened, and the steps of turning the handle to open the window are appropriately increased, so as to relatively safely close the window. However, in this technology, since the window sash remains stationary when the handle rotates idly, children still have a great curiosity about opening the window, and this technical solution adopts structures such as an idle rotation sleeve, with more overall components and a more complex structure. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the present utility model aims to provide a micro-ventilation door and window system with safe use. By controlling the rotation angle of the rotating handle, the transmission bar is moved to different positions, thereby realizing the unlocking or locking of the first locking structure and the second locking structure. When the first locking structure is unlocked and the second locking structure is locked, it is in the micro-ventilation state, that is, the child mode, and the window sash can only be partially opened; when both the first locking structure and the second locking structure are unlocked, it is in the normal opening state, and the window sash can be fully opened. In this way, it can not only satisfy the curiosity of children to operate the handle structure to open the window sash, but also reduce potential safety hazards, improve the safety of using the door and window system, and has a simple structure and convenient operation.

[0007] The present utility model is realized by adopting the following technical solutions:

[0008] A micro-ventilation door and window system with safe use, comprising:

[0009] A window frame;

[0010] A window sash, which cooperates with the window frame;

[0011] A transmission device, which includes a transmission bar and a jacking element, and the jacking element drives the transmission bar to move up and down by rotation;

[0012] A handle structure, which includes a handle and a first bushing. One end of the first bushing is in transmission connection with the handle, and the other end of the first bushing is in transmission connection with the jacking element. Rotating the handle drives the jacking element to rotate;

[0013] A first locking structure, which includes a mutually cooperating first locking part and a second locking part. The first locking part is arranged on the window frame, and the second locking part is arranged on the transmission bar;

[0014] A second locking structure, which includes a mutually cooperating third locking part and a fourth locking part. The third locking part is arranged on the window frame, and the fourth locking part is arranged on the transmission bar, and the first locking part is arranged above the third locking part, and the second locking part is arranged above the fourth locking part.

[0015] In a preferred embodiment, the first locking part includes a first card slot, and the opening of the first card slot faces downward;

[0016] The second locking part includes a first lock seat and a first lock point. The first lock point is arranged on the first lock seat, and the first lock seat is arranged on the transmission bar;

[0017] When the transmission bar is in the initial position, the first card slot and the first lock point cooperate with each other;

[0018] When the transmission bar moves downward from the initial position to its first predetermined position, the first locking slot and the first locking point are disengaged from each other.

[0019] In a preferred embodiment, the first locking point includes a locking point rivet and a locking point ring. The locking point rivet is fixed on the first lock seat through the locking point ring. The locking point rivet is an eccentric part. By rotating the locking point ring, its radial position relative to the locking point rivet is adjusted to adjust the tightness of the fit between the first locking point and the first lock seat.

[0020] In a preferred embodiment, the third locking portion includes a second lock seat, a slide rod unit, a second locking point, a limiter, and a first elastic element;

[0021] The slide rod unit includes a sliding sleeve and a pull rod. The sliding sleeve and the pull rod are nested and slidably connected. One end of the sliding sleeve is rotatably connected to the second lock seat. The other end of the sliding sleeve is an opening for the pull rod to enter and exit. The second locking point is set at the protruding end of the pull rod.

[0022] The limiting member is rotatably connected to the second lock seat, and the limiting member is arranged on one side of the sliding sleeve to limit the sliding sleeve from rotating toward the limiting member;

[0023] The first elastic element is arranged at a rotational connection position between the sliding sleeve and the second lock seat, and one end of the first elastic element abuts against the sliding sleeve, and the other end of the first elastic element abuts against the second lock seat, so that the sliding sleeve stops at different rotational positions;

[0024] The fourth locking portion includes a second slot, and the opening of the second slot faces upward;

[0025] When the transmission bar is located at the initial position and the first predetermined position, the second locking slot and the second locking point cooperate with each other;

[0026] When the transmission bar moves downward from the initial position to its second predetermined position, the second locking slot and the second locking point are disengaged from each other.

[0027] In a preferred embodiment, a first limiting protrusion is provided at the end of the sliding sleeve away from the second lock seat, and a first limiting recess is provided at the end of the pull rod away from its protruding end. The first limiting protrusion and the first limiting recess cooperate with each other, and an avoidance groove for avoiding the first limiting protrusion is provided in the middle of the pull rod.

[0028] In a preferred embodiment, the end of the second lock seat is provided with an avoidance recess for installing a limit member. The limit member is generally in the shape of a "U". The limit member has a first bending portion and a second bending portion. The first bending portion is used to cooperate with the sliding sleeve, and the second bending portion is used to cooperate with the avoidance recess.

[0029] In a preferred embodiment, the lifting element is a cam or a gear;

[0030] When the lifting element is a cam, the lifting element abuts against the lower part of the transmission bar;

[0031] When the lifting element is a gear, meshing teeth for meshing with the lifting element are arranged on the transmission bar, and the lifting element meshes with the transmission bar.

[0032] In a preferred embodiment, the handle structure further includes a second bushing, a base, and a second elastic element;

[0033] An installation cavity is arranged inside the base, and a limiting groove arranged along the circumferential direction of the second bushing is arranged in the installation cavity;

[0034] The second bushing is arranged in the installation cavity of the base, the second bushing is rotatably connected to the base, a chute and a through hole arranged along its axial direction are arranged on the second bushing, and the chute communicates with the through hole;

[0035] The first bushing is embedded inside the second bushing, and one end of the first bushing passes through the second bushing and is integrally connected to the handle. The first bushing is slidably connected to the second bushing, and a protrusion for cooperating with the through hole or the chute is arranged on the first bushing;

[0036] The second elastic element is sleeved outside the first bushing, and the second elastic element is arranged between the base and the handle. One end of the second elastic element abuts against the handle, and the other end of the second elastic element abuts against the base;

[0037] The second elastic element urges the handle to move away from the base so that the protrusion cooperates with the through hole. When the protrusion cooperates with the through hole, the protrusion passes through the through hole and is slidably connected to the limiting groove. Rotating the handle drives the first bushing and the second bushing to rotate within the range of the limiting groove;

[0038] Press the handle close to the base so that the protrusion cooperates with the chute. When the protrusion cooperates with the chute, the protrusion disengages from the limiting groove, and rotating the handle drives the first bushing and the second bushing to rotate outside the range of the limiting groove.

[0039] In a preferred embodiment, the base includes a seat body and a base cover. The installation cavity is arranged inside the seat body. A sandwich layer is formed between the base cover and the seat body. A positioning structure is arranged in the sandwich layer. The positioning structure includes a first positioning groove, a positioning post, and a third elastic element. The first positioning groove is arranged along the radial direction of the second bushing. The third elastic element is horizontally arranged in the first positioning groove. One end of the third elastic element abuts against the first positioning groove, and the other end of the third elastic element is connected to the positioning post;

[0040] The positioning structure is arranged on the side of the second bushing. At least one second positioning groove is arranged on the outer peripheral side of the second bushing. The third elastic element presses the positioning post into the corresponding second positioning groove.

[0041] In a preferred embodiment, the second sleeve is provided with a first connecting hole for cooperating with the first sleeve, the first connecting hole is a polygonal hole, and the outer portion of the first sleeve is a polygonal shape, so that the first sleeve drives the second sleeve to rotate;

[0042] There is a clearance fit between the first shaft sleeve and the second shaft sleeve. The first shaft sleeve can slide up and down relative to the second shaft sleeve, and the protrusion can slide up and down along the sliding groove.

[0043] In summary, the present invention has the following technical effects:

[0044] 1. The utility model controls the rotation angle of the rotating handle to control the movement of the transmission bar to different positions, thereby realizing the unlocking or locking of the first locking structure and the second locking structure. When the first locking structure is unlocked and the second locking structure is locked, it is in a micro-ventilation state, that is, a child mode, and the window sash can only be partially opened; when both the first locking structure and the second locking structure are unlocked, it is in a normal opening state and the window sash can be fully opened. In this way, it can satisfy the curiosity of children to operate the handle structure to open the window sash, reduce safety hazards, improve the safety of the door and window system, and has a simple structure and is easy to operate.

[0045] 2. The present invention adopts a limiter to limit the rotation direction and position of the sliding sleeve. The limiter can be installed on the left or right side of the sliding sleeve, and can be used in left-hand assembly or right-hand assembly scenarios; and by providing a first elastic element to make the sliding sleeve stop at different rotation positions, it is easy to operate and improves user comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic structural diagram of an initial state of an embodiment of the present utility model;

[0047] Figure 2 This is a structural diagram of a micro-ventilation state of an embodiment of the present utility model;

[0048] Figure 3 This is a structural diagram of an embodiment of the utility model in a normal open state;

[0049] Figure 4 This is a structural diagram of the first locking point and the second locking slot in an embodiment of the present utility model;

[0050] Figure 5 For the embodiment of the utility model Figure 4 Schematic diagram of the decomposition structure;

[0051] Figure 6 This is a schematic structural diagram of the third locking portion of an embodiment of the utility model from a first perspective;

[0052] Figure 7Schematic diagram of the structure of the third locking part of the embodiment of the present utility model from the second perspective;

[0053] Figure 8 Schematic diagram of the structure of the third locking part of the embodiment of the present utility model from the third perspective;

[0054] Figure 9 Schematic diagram of the structure of the limiting member of the embodiment of the present utility model arranged on the other side;

[0055] Figure 10 For the embodiment of the present utility model Figure 6 exploded structure diagram;

[0056] Figure 11 Schematic diagram of the structure of the limiting member of the embodiment of the present utility model;

[0057] Figure 12 Schematic diagram of the structure of the third locking part of the embodiment of the present utility model in the micro-ventilation state;

[0058] Figure 13 Schematic diagram of the structure of the handle structure of the embodiment of the present utility model;

[0059] Figure 14 For the embodiment of the present utility model Figure 13 exploded structure diagram;

[0060] Figure 15 Schematic diagram of the structure of the first bushing of the embodiment of the present utility model;

[0061] Figure 16 Schematic diagram of the structure of the second bushing of the embodiment of the present utility model;

[0062] Figure 17 Schematic diagram of the structure of the seat body of the embodiment of the present utility model;

[0063] Figure 18 Schematic diagram of the structure of the first bushing and the second bushing of the embodiment of the present utility model in the micro-ventilation state;

[0064] Figure 19 Schematic diagram of the structure of the first bushing and the second bushing of the embodiment of the present utility model in the normal opening state;

[0065] Figure 20 Schematic diagram of the partial internal structure of the handle structure of the embodiment of the present utility model from the first perspective in the micro-ventilation state;

[0066] Figure 21 Schematic diagram of the partial internal structure of the handle structure of the embodiment of the present utility model in the normal opening state;

[0067] Figure 22This is a schematic diagram of the partial internal structure of the handle structure of the embodiment of the present utility model from the second perspective in the micro-ventilation state.

[0068] Among them, the meanings of the reference numerals are as follows:

[0069] 10, window frame;

[0070] 20, window sash;

[0071] 30, actuator, 301, drive bar;

[0072] 40, handle structure, 401, handle, 402, first bushing, 403, second bushing, 404, base, 4041, seat body, 4042, base cover, 4043, pressure ring, 405, second elastic element, 406, limiting groove, 407, sliding groove, 408, through hole, 409, protrusion, 410, positioning structure, 4101, first positioning groove, 4102, positioning post, 4103, third elastic element, 411, second positioning groove, 412, first connection hole, 413, third connecting piece, 414, second connection hole, 415, third connection hole;

[0073] 50, first locking structure, 501, first clamping groove, 502, first lock seat, 503, first locking point, 5031, locking point rivet, 5032, locking point ferrule;

[0074] 60, second locking structure, 601, second lock seat, 6011, avoidance recess, 6012, second limiting recess, 602, sliding groove pull rod unit, 6021, sliding sleeve, 6022, pull rod, 6023, first limiting protrusion, 6024, first limiting recess, 6025, avoidance groove, 6026, sliding sleeve cover, 603, second locking point, 604, limiting part, 6041, first bent part, 6042, second bent part, 6043, second limiting protrusion, 605, first elastic element, 606, clamping spring, 607, first connecting piece, 608, second connecting piece, 609, clamping piece, 610, rotating shaft. Detailed implementation manners

[0075] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0076] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0078] Referring to Figures 1 - 22 , the present utility model discloses a micro-ventilation door and window system with safe use, including: a window frame 10; a window sash 20, the window sash 20 being matched with the window frame 10; a driver 30, the driver 30 including a transmission bar 301 and a lifting element, the lifting element driving the transmission bar 301 to move up and down by rotation; a handle structure 40, the handle structure 40 including a handle 401 and a first bushing 402, one end of the first bushing 402 being in driving connection with the handle 401, the other end of the first bushing 402 being in driving connection with the lifting element, and rotating the handle 401 to drive the lifting element to rotate; a first locking structure 50, the first locking structure 50 including a mutually matching first locking part and a second locking part, the first locking part being arranged on the window frame 10, and the second locking part being arranged on the transmission bar 301; a second locking structure 60, the second locking structure 60 including a mutually matching third locking part and a fourth locking part, the third locking part being arranged on the window frame 10, the fourth locking part being arranged on the transmission bar 301, and the first locking part being arranged above the third locking part, and the second locking part being arranged above the fourth locking part.

[0079] Specifically, one end of the first bushing 402 is fixedly connected to the handle 401, and the other end of the first bushing 402 is fixedly connected to the lifting element to realize that rotating the handle 401 drives the lifting element to rotate.

[0080] When the handle 401 rotates a first angle from its initial position to drive the transmission bar 301 to move downward from its initial position to its first predetermined position, the first locking part and the second locking part are disengaged from each other, and the window sash 20 can be partially opened relative to the window frame 10; when the handle 401 is pressed and rotates a second angle from its initial position to drive the transmission bar 301 to move downward from its initial position to its second predetermined position, the first locking part and the second locking part are disengaged from each other, and the third locking part and the fourth locking part are disengaged from each other, and the window sash 20 can be fully opened relative to the window frame 10.

[0081] The utility model controls the rotation angle of the rotary handle 401 to control the movement of the transmission bar 301 to different positions, so as to realize the unlocking or locking of the first locking structure 50 and the second locking structure 60. When the first locking structure 50 is unlocked and the second locking structure 60 is locked, it is in the micro-ventilation state, that is, the child mode, and the window sash 20 can only be partially opened; when both the first locking structure 50 and the second locking structure 60 are opened, it is in the normal opening state, and the window sash 20 can be fully opened. In this way, it can not only satisfy the curiosity of children to operate the handle structure 40 to open the window sash 20, but also reduce potential safety hazards, improve the safety of the door and window system during use, and has a simple structure and convenient operation.

[0082] The working method of the utility model is simple and convenient. In the micro-ventilation state, the user only needs to directly rotate the handle 401, and rotate the first angle from the initial position of the handle 401 to realize the partial opening of the window sash 20; when switching to the normal opening state, the user only needs to press and rotate the handle 401, and rotate the second angle from the initial position of the handle 401 to realize the full opening of the door and window.

[0083] In the embodiment of the utility model, the first locking part includes a first clamping groove 501, and the opening of the first clamping groove 501 faces downward; the second locking part includes a first locking seat 502 and a first locking point 503, the first locking point 503 is arranged on the first locking seat 502, and the first locking seat 502 is arranged on the transmission bar 301; when the transmission bar 301 is in the initial position, the first clamping groove 501 and the first locking point 503 cooperate with each other; when the transmission bar 301 moves downward from the initial position to its first predetermined position, the first clamping groove 501 and the first locking point 503 are disengaged from each other.

[0084] Specifically, the first locking point 503 includes a locking point rivet 5031 and a locking point ferrule 5032. The locking point rivet 5031 passes through the locking point ferrule 5032 and is fixed on the first locking seat 502. The locking point rivet 5031 is an eccentric part, and rotation can adjust the radial position of the locking point ferrule 5032 relative to the locking point rivet 5031, and can realize the adjustment of the tightness of the cooperation between the first locking point 503 and the first locking seat 502.

[0085] It should be noted that the upper limit position of the transmission bar 301 is set as the initial position of the transmission bar 301. The distance from the initial position of the transmission bar 301 to the first predetermined position of the transmission bar 301 and the distance from the initial position of the transmission bar 301 to the second predetermined position of the transmission bar 301 are calculated according to the set positions of the first locking structure 50 and the second locking structure 60, and are determined according to the actual use and installation scenarios, and are not limited.

[0086] In the embodiment of the present utility model, the third locking portion includes a second locking seat 601, a chute pull rod unit 602, a second locking point 603, a limiting member 604, and a first elastic element 605; the chute pull rod unit 602 includes a sliding sleeve 6021 and a pull rod 6022. The sliding sleeve 6021 and the pull rod 6022 are nested and slidably connected. One end of the sliding sleeve 6021 is rotatably connected to the second locking seat 601, and the other end of the sliding sleeve 6021 is an opening for the pull rod 6022 to enter and exit. The second locking point 603 is arranged at the extending end of the pull rod 6022; the limiting member 604 is rotatably connected to the second locking seat 601, and the limiting member 604 is arranged on one side of the sliding sleeve 6021 to limit the sliding sleeve 6021 from rotating towards the side of the limiting member 604; the first elastic element 605 is arranged at the rotational connection position between the sliding sleeve 6021 and the second locking seat 601, and one end of the first elastic element 605 abuts against the sliding sleeve 6021, and the other end of the first elastic element 605 abuts against the second locking seat 601 to make the sliding sleeve 6021 stagnate at different rotational positions; the fourth locking portion includes a second card slot, and the opening of the second card slot faces upwards; when the transmission bar 301 is in the initial position, the second card slot cooperates with the second locking point 603; when the transmission bar 301 moves downward from the initial position to its second predetermined position, the second card slot is disengaged from the second locking point 603.

[0087] It should be noted that, due to the arrangement of the chute pull rod unit 602, when the first locking portion and the second locking portion are disengaged from each other and the third locking portion and the fourth locking portion are engaged with each other, the window sash 20 can still be pushed out. During the process of pushing out the window sash 20, the entire chute pull rod unit 602 rotates relative to the second locking seat 601, and the pull rod 6022 slides out relative to the sliding sleeve 6021. However, at the same time, limited by the movement stroke of the pull rod 6022, the window sash 20 can only be partially opened.

[0088] Specifically, the first elastic element 605 is a wave washer.

[0089] Specifically, the second card slot is formed by a clamping sleeve spring 606, which is mainly used to clamp the second locking point 603 in the slightly ventilated state. The user must apply a relatively large thrust to make the second locking point 603 move relative to the second card slot, playing a role in restricting the automatic window closing in the slightly ventilated state.

[0090] It should be noted that the sliding sleeve 6021 and the pull rod 6022 are coaxially arranged. The sliding sleeve 6021 is provided with a linear groove for cooperating with the pull rod 6022 to enable the pull rod 6022 to slide along the sliding sleeve 6021; the sliding sleeve 6021 is sleeved outside the pull rod 6022, or the pull rod 6022 is sleeved outside the sliding sleeve 6021. The specific relative position of the sliding sleeve 6021 and the pull rod 6022 only needs to be able to realize the sliding of the pull rod 6022 relative to the sliding sleeve 6021.

[0091] Due to the provision of the limit member 604, the sliding sleeve 6021 can only drive the pull rod 6022 to rotate towards the side without the limit member 604, and when the sliding sleeve 6021 rotates and resets, it can abut against the limit member 604, preventing the sliding sleeve 6021 from deviating when rotating and resetting; the first elastic element 605 functions to tighten the sliding sleeve 6021 and the second lock seat 601, so that the sliding sleeve 6021 can stop at a certain rotation angle.

[0092] The present utility model uses the limit member 604 to limit the rotation direction and position of the sliding sleeve 6021. The limit member 604 can be installed on the left or right side of the sliding sleeve 6021, and can be applicable to leftward or rightward assembly usage scenarios; and by providing the first elastic element 605, the sliding sleeve 6021 can stop at different rotation positions, which is convenient for operation and improves the user's comfort.

[0093] In the embodiment of the present utility model, a first limit convex portion 6023 is provided at the end of the sliding sleeve 6021 away from the second lock seat 601, and a first limit concave portion 6024 is provided at the end of the pull rod 6022 away from its protruding end. The first limit convex portion 6023 and the first limit concave portion 6024 cooperate with each other, and an avoidance groove 6025 for avoiding the first limit convex portion 6023 is provided in the middle of the pull rod 6022.

[0094] Specifically, the first limit convex portion 6023 is arc-shaped. When the pulling force applied by the user to push and pull the pull rod 6022 by the window sash 20 reaches a predetermined value, the first limit convex portion 6023 can be engaged with the first limit concave portion 6024, or the first limit convex portion 6023 can be disengaged from the first limit concave portion 6024. The cooperation between the first limit convex portion 6023 and the first limit concave portion 6024 is a temporary cooperation; thus, through the cooperation between the first limit convex portion 6023 and the first limit concave portion 6024, the pull rod 6022 is prevented from detaching from the sliding sleeve 6021, and the maximum stroke of the pull rod 6022 is limited.

[0095] In the embodiment of the present utility model, the chute pull rod unit 602 further includes a sliding sleeve cover 6026. The sliding sleeve cover 6026 is provided at one end of the sliding sleeve 6021, and the other end of the sliding sleeve 6021 is an opening through which the pull rod 6022 slides in and out relatively; the sliding sleeve cover 6026 can prevent the pull rod 6022 from detaching from the sliding sleeve 6021.

[0096] In the embodiment of the present utility model, an avoidance recess 6011 for installing a limiting member 604 is provided at the end of the second lock base 601. The limiting member 604 is integrally in a "U" shape and has a first bent portion 6041 and a second bent portion 6042. The first bent portion 6041 is used to cooperate with the sliding sleeve 6021, and the second bent portion 6042 is used to cooperate with the avoidance recess 6011. The limiting member 604 fills the space of the avoidance recess 6011 through its second bent portion 6042, and the limiting member 604 plays a supporting role for the sliding sleeve 6021.

[0097] In the embodiment of the present invention, the sliding groove pull rod unit 602 further includes a first connecting member 607. The limiting member 604 is rotatably connected to the second lock base 601 through the first connecting member 607. A second limiting convex portion 6043 is provided on the limiting member 604, and a second limiting concave portion 6012 for cooperating with the second limiting convex portion 6043 is provided on the second lock base 601.

[0098] During use, according to the actual application scenario, the limiting member 604 is rotated to the left or right side of the second lock base 601 around the first connecting member 607. The first connecting member 607 can adopt a rotating shaft to facilitate the rotation of the limiting member 604. After rotation in place, the limiting member 604 is clamped and fixed by the cooperation of the second limiting convex portion 6043 and the second limiting concave portion 6012. The second limiting convex portion 6043 is an arc-shaped convex point, and when the rotating force reaches a predetermined value, the second limiting convex portion 6043 can be separated from the second limiting concave portion 6012.

[0099] In order to prevent the sliding groove pull rod unit 602 from affecting the rotation of the limiting member 604 for position adjustment, the position adjustment of the limiting member 604 needs to be completed before the sliding groove pull rod unit 602 is installed in the door and window system. During adjustment, the sliding groove pull rod unit 602 is rotated to another position. After the limiting member 604 is clamped and fixed, the sliding groove pull rod unit 602 is reset from another direction. Of course, the sliding groove pull rod unit 602 can also be disassembled. After the limiting member 604 is rotated, the sliding groove pull rod unit 602 is reinstalled.

[0100] In the embodiment of the present utility model, the limiting member 604 is provided at one end of the second lock base 601, and the middle of the second lock base 601 is rotatably connected to the sliding sleeve 6021. The third locking portion further includes a second connecting member 608 and a clamping piece 609. The second connecting member 608 and the clamping piece 609 are provided at the other end of the second lock base 601. The second lock base 601 is fixedly connected to the window frame 10 through the second connecting member 608 and the clamping piece 609. The second connecting member 608 can adopt a screw to facilitate the installation of the second lock base 601. The sliding sleeve 6021 is rotatably connected to the second lock base 601 through a rotating shaft 610, and the first elastic element 605 is sleeved outside the rotating shaft 610.

[0101] In the embodiment of the present utility model, the lifting element is a cam or a gear; when the lifting element is a cam, the lifting element abuts against the lower part of the transmission bar 301; when the lifting element is a gear, meshing teeth for meshing with the lifting element are arranged on the transmission bar 301, and the lifting element meshes with the transmission bar 301.

[0102] In the embodiment of the present utility model, the handle structure 40 further includes a second bushing 403, a base 404 and a second elastic element 405; an installation cavity is arranged inside the base 404, and a limiting groove 406 arranged along the circumferential direction of the second bushing 403 is arranged in the installation cavity; the second bushing 403 is arranged in the installation cavity of the base 404, the second bushing 403 is rotatably connected with the base 404, a sliding groove 407 and a through hole 408 arranged along the axial direction thereof are arranged on the second bushing 403, and the sliding groove 407 communicates with the through hole 408; the first bushing 402 is embedded inside the second bushing 403, and one end of the first bushing 402 passes through the second bushing 403 and is integrally connected with the handle 401, the first bushing 402 is slidably connected with the second bushing 403, and a protrusion 409 for cooperating with the through hole 408 or the sliding groove 407 is arranged on the first bushing 402; the second elastic element 405 is sleeved outside the first bushing 402, and the second elastic element 405 is arranged between the base 404 and the handle 401, one end of the second elastic element 405 abuts against the handle 401, and the other end of the second elastic element 405 abuts against the base 404; the second elastic element 405 drives the handle 401 away from the base 404 so that the protrusion 409 cooperates with the through hole 408, when the protrusion 409 cooperates with the through hole 408, the protrusion 409 passes through the through hole 408 and is slidably connected with the limiting groove 406, and rotating the handle 401 drives the first bushing 402 and the second bushing 403 to rotate within the range of the limiting groove 406; pressing the handle 401 close to the base 404 so that the protrusion 409 cooperates with the sliding groove 407, when the protrusion 409 cooperates with the sliding groove 407, the protrusion 409 disengages from the limiting groove 406, and rotating the handle 401 drives the first bushing [[ID=…]] and the second bushing 403 to rotate outside the range of the limiting groove 406.

[0103] Specifically, the second elastic member is a spring.

[0104] Preferably, when the handle 401 is in the initial state, the protrusion 409 is located in the middle of the limiting groove 406. In this way, the handle 401 can rotate counterclockwise or clockwise, and can be applicable to left-handed assembly or right-handed assembly usage scenarios; of course, the rotation direction of the handle 401, the rotation angle of the handle 401, and the radian size of the limiting groove 406 are based on being able to cooperate with the transmission bar 301 to achieve the micro-ventilation state in which the window sash 20 can be partially opened and the normal opening state in which the window sash 20 can be fully opened.

[0105] Set the initial state when the handle 401 is placed downward. In the initial state, the safe-to-use door and window system is in the locked state, that is, both the first locking structure 50 and the second locking structure 60 are locked. At this time, the window sash 20 cannot be opened. At this time, under the elastic force of the first elastic element 605, the first elastic element 605 drives the handle 401 and the first bushing 402 away from the base 404, that is, the first elastic element 605 drives the handle 401 to drive the first bushing 402 to move axially relative to the second bushing 403, and the protrusion 409 moves along the chute 407 to the position of the through hole 408, and the protrusion 409 passes through the through hole 408 and cooperates with the limit groove 406.

[0106] In the micro-ventilation state, the user can directly rotate the handle 401, and the handle 401, the first bushing 402, and the second bushing 403 rotate together, thereby driving the protrusion 409 to rotate in the limit groove 406. At this time, the rotation angle of the handle 401 is limited, and the downward movement distance of the transmission bar 301 is limited; by setting the size of the limit groove 406 and the rotation angle of the handle 401, when the transmission bar 301 moves downward from its initial position to its first predetermined position, for example, the first rotation angle of the handle 401 can be set to 90 degrees. At this time, the first locking part and the second locking part are disengaged from each other, the first locking structure 50 is unlocked, and the third locking part and the fourth locking part cooperate with each other, and the second locking structure 60 is still locked. At this time, the window sash 20 can be partially opened.

[0107] In the normal opening state, the user presses the handle 401 along the axial direction of the handle 401 and rotates the handle 401 around the central axis direction of the handle 401. Pressing the handle 401 drives the first bushing 402 to move axially relative to the second bushing 403, and the protrusion 409 disengages from the limit groove 406. The protrusion 409 enters the chute 407 from the position of the through hole 408 and cooperates with the chute 407. The handle 401, the first bushing 402, and the second bushing 403 rotate together. At this time, the rotation of the handle 401 is not limited, and the handle 401 can rotate at any angle around its central axis; by setting the rotation angle of the handle 401, when the transmission bar 301 moves downward from its initial position to its second predetermined position, for example, the first rotation angle of the handle 401 can be set to 180 degrees. At this time, the first locking part and the second locking part are disengaged from each other, the first locking structure 50 is unlocked, the third locking part and the fourth locking part are disengaged from each other, and the second locking structure 60 is unlocked. At this time, the window sash 20 can be fully opened.

[0108] In the embodiment of the present utility model, the base 404 includes a base body 4041 and a base cover 4042. The installation cavity is arranged inside the base body 4041. A sandwich layer is formed between the base cover 4042 and the base body 4041. A positioning structure 410 is arranged in the sandwich layer. The positioning structure 410 includes a first positioning groove 4101, a positioning post 4102, and a third elastic element 4103. The first positioning groove 4101 is arranged along the radial direction of the second sleeve 403. The third elastic element 4103 is horizontally arranged in the first positioning groove 4101. One end of the third elastic element 4103 abuts against the first positioning groove 4101, and the other end of the third elastic element 4103 is connected to the positioning post 4102. The positioning structure 410 is arranged on the side of the second sleeve 403. At least one second positioning groove 411 is arranged on the outer peripheral side of the second sleeve 403. The third elastic element 4103 presses the positioning post 4102 into the corresponding second positioning groove 411.

[0109] Specifically, the third elastic element 4103 is a spring.

[0110] Furthermore, the base 404 further includes a pressing ring 4043. The pressing ring 4043 is arranged outside the base cover 4042. One end of the second elastic element 405 abuts against the handle 401, and the other end of the second elastic element 405 abuts against the pressing ring 4043.

[0111] Preferably, two positioning structures 410 can be arranged. The two positioning structures 410 are respectively arranged on both sides of the second sleeve 403 so as to form an opposing force to the second sleeve 403. Four second positioning grooves 411 can be arranged. The four second positioning grooves 411 are evenly spaced. Both the positioning post 4102 and the second positioning groove 411 are arc-shaped. When the second sleeve 403 rotates, the positioning post 4102 can enter and exit the second positioning groove 411, avoiding interference of the positioning structure 410 with the rotation of the handle 401, the first sleeve 402, and the second sleeve 403. The arrangement of the positioning structure 410 is conducive to forming a temporary positioning at a predetermined angle of the second sleeve 403. When the force for rotating the handle 401 reaches a predetermined value, the second sleeve 403 disengages from the positioning structure 410.

[0112] In the embodiment of the present utility model, a first connection hole 412 for cooperating with the first sleeve 402 is arranged inside the second sleeve 403. The first connection hole 412 is a polygonal hole. The outer part of the first sleeve 402 is polygonal, so that the first sleeve 402 drives the second sleeve 403 to rotate. A clearance fit is provided between the first sleeve 402 and the second sleeve 403. The first sleeve 402 can slide up and down relative to the second sleeve 403, and the protrusion 409 can slide up and down along the chute 407.

[0113] Specifically, a second connection hole 414 for connecting with the handle 401 through a third connecting member 413 is provided inside the first bushing 402, and a third connection hole 415 for installing the second bushing 403 is provided on the base 404.

[0114] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions formed by any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A safe micro-ventilation door and window system, characterized in that, Comprising: Window frame; Sash, which cooperates with the window frame; Transmission, the transmission includes a transmission bar and a lifting element, and the lifting element drives the transmission bar to move up and down by rotation; Handle structure, the handle structure includes a handle and a first bushing, one end of the first bushing is in transmission connection with the handle, and the other end of the first bushing is in transmission connection with the lifting element, and rotating the handle drives the lifting element to rotate; First locking structure, the first locking structure includes a first locking portion and a second locking portion that cooperate with each other, the first locking portion is arranged on the window frame, and the second locking portion is arranged on the transmission bar; Second locking structure, the second locking structure includes a third locking portion and a fourth locking portion that cooperate with each other, the third locking portion is arranged on the window frame, the fourth locking portion is arranged on the transmission bar, and the first locking portion is arranged above the third locking portion, and the second locking portion is arranged above the fourth locking portion.

2. The micro-ventilation door and window system with safe use according to claim 1, characterized in that: The first locking portion includes a first card slot, and the opening of the first card slot faces downward; The second locking portion includes a first lock seat and a first lock point, the first lock point is arranged on the first lock seat, and the first lock seat is arranged on the transmission bar; When the transmission bar is in the initial position, the first card slot and the first lock point cooperate with each other; When the transmission bar moves downward from the initial position to its first predetermined position, the first card slot and the first lock point are disengaged from each other.

3. The micro-ventilation door and window system with safe use according to claim 2, characterized in that: The first lock point includes a lock point rivet and a lock point ferrule, the lock point rivet passes through the lock point ferrule and is fixed on the first lock seat, the lock point rivet is an eccentric part, and by rotating the lock point ferrule, its radial position relative to the lock point rivet is adjusted to adjust the tightness of the cooperation between the first lock point and the first lock seat.

4. The micro-ventilation door and window system with safe use according to claim 1, characterized in that: The third locking portion includes a second lock seat, a chute pull rod unit, a second lock point, a limiting member and a first elastic element; The chute pull rod unit includes a sliding sleeve and a pull rod, the sliding sleeve and the pull rod are nested and slidably connected, one end of the sliding sleeve is rotatably connected to the second lock seat, the other end of the sliding sleeve is an opening for the pull rod to enter and exit, and the second lock point is arranged at the protruding end of the pull rod; The limiting member is rotatably connected to the second lock seat, and the limiting member is arranged on one side of the sliding sleeve to limit the sliding sleeve from rotating towards the side of the limiting member; The first elastic element is arranged at the rotational connection position between the sliding sleeve and the second lock seat, and one end of the first elastic element abuts against the sliding sleeve, and the other end of the first elastic element abuts against the second lock seat, so that the sliding sleeve stays at different rotational positions; The fourth locking portion includes a second card slot, and the opening of the second card slot faces upward; When the transmission bar is in the initial position and the first predetermined position, the second card slot and the second lock point cooperate with each other; When the transmission bar moves downward from the initial position to its second predetermined position, the second card slot and the second lock point are disengaged from each other.

5. The micro-ventilation door and window system with safe use according to claim 4, characterized in that: A first limiting convex part is arranged at an end of the sliding sleeve away from the second locking seat, a first limiting concave part is arranged at an end of the pull rod away from its protruding end, the first limiting convex part and the first limiting concave part cooperate with each other, and an avoidance groove for avoiding the first limiting convex part is arranged in the middle of the pull rod.

6. The micro-ventilation door and window system with safe use according to claim 4, characterized in that: An avoidance concave part for installing the limiting part is arranged at an end of the second locking seat, the limiting part is integrally in a "U" shape, the limiting part has a first bending part and a second bending part, the first bending part is used for cooperating with the sliding sleeve, and the second bending part is used for cooperating with the avoidance concave part.

7. The micro-ventilation door and window system with safe use according to claim 1, characterized in that: The jacking element is a cam or a gear; When the jacking element is a cam, the jacking element abuts against the lower part of the transmission bar; When the jacking element is a gear, meshing teeth for meshing with the jacking element are arranged on the transmission bar, and the jacking element and the transmission bar mesh with each other.

8. The micro-ventilation door and window system with safe use according to claim 1, characterized in that: The handle structure further includes a second shaft sleeve, a base and a second elastic element; An installation cavity is arranged inside the base, and a limiting groove arranged along the circumferential direction of the second shaft sleeve is arranged in the installation cavity; The second shaft sleeve is arranged in the installation cavity of the base, the second shaft sleeve is rotatably connected with the base, a chute and a through hole arranged along the axial direction of the second shaft sleeve are arranged on the second shaft sleeve, and the chute and the through hole communicate with each other; The first shaft sleeve is embedded inside the second shaft sleeve, one end of the first shaft sleeve passes through the second shaft sleeve and is integrally connected with the handle, the first shaft sleeve is slidably connected with the second shaft sleeve, and a protrusion for cooperating with the through hole or the chute is arranged on the first shaft sleeve; The second elastic element is sleeved outside the first shaft sleeve, and the second elastic element is arranged between the base and the handle, one end of the second elastic element abuts against the handle, and the other end of the second elastic element abuts against the base; The second elastic element drives the handle away from the base so that the protrusion cooperates with the through hole. When the protrusion cooperates with the through hole, the protrusion passes through the through hole and is slidably connected with the limiting groove. Rotating the handle drives the first shaft sleeve and the second shaft sleeve to rotate within the range of the limiting groove; Press the handle close to the base so that the protrusion cooperates with the chute. When the protrusion cooperates with the chute, the protrusion disengages from the limiting groove. Rotating the handle drives the first shaft sleeve and the second shaft sleeve to rotate outside the range of the limiting groove.

9. The micro-ventilation door and window system with safety in use according to claim 8, characterized in that: The base includes a seat body and a base cover, the installation cavity is arranged inside the seat body, a sandwich layer is formed between the base cover and the seat body, a positioning structure is arranged in the sandwich layer, the positioning structure includes a first positioning groove, a positioning post and a third elastic element, the first positioning groove is arranged along the radial direction of the second shaft sleeve, the third elastic element is arranged horizontally in the first positioning groove, one end of the third elastic element abuts against the first positioning groove, and the other end of the third elastic element is connected with the positioning post; The positioning structure is arranged on the side of the second bushing. At least one second positioning groove is arranged on the outer peripheral side of the second bushing. The third elastic element presses the positioning post into the corresponding second positioning groove.

10. The micro-ventilation door and window system with safe use according to claim 8, characterized in that: A first connection hole for cooperating with the first bushing is arranged inside the second bushing. The first connection hole is a polygonal hole, and the outside of the first bushing is polygonal, so that the first bushing drives the second bushing to rotate. A clearance fit is provided between the first bushing and the second bushing. The first bushing can slide up and down relative to the second bushing, and the protrusion can slide up and down along the sliding groove.

Images