Side-hung window lower sliding support assembly with reliable locking function

Abstract

The utility model discloses a side-hung window lower sliding support assembly with a reliable locking function, which comprises a window sash connecting cross rod, a transverse transmission rod and a window frame connecting rod, the window sash connecting cross rod is connected with the window frame connecting rod through a rotating assembly, the rotating assembly comprises a first rotating rod, and the first rotating rod is rotatably connected with the window sash connecting cross rod. A positioning groove is formed in the first end of the first rotating rod, a notch communicated with the positioning groove is formed in the middle of the end portion of the first end of the first rotating rod, and a first limiting column is arranged on the lower portion of the position, close to the positioning groove, of the transverse transmission rod. The lower end of the first limiting column penetrates through the corresponding strip-shaped through hole in the window sash connecting cross rod and meets the following condition that after the window sash is hung open, the lower end of the first limiting column is located in the positioning groove and cannot be separated from the notch. According to the utility model, the handle can be rotated to 180 degrees and can be prevented from rotating after being suspended, the disorder of the transmission function of the handle is avoided, and meanwhile, the function of limiting the maximum suspended opening angle of a window sash is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of production of casement-hung windows, and specifically relates to a sliding support assembly for casement-hung windows, and in particular to a sliding support assembly for casement-hung windows with a reliable locking function. Background Art

[0002] Casement-hung windows are a general term for windows that can be opened and closed both horizontally and vertically. From the perspective of function, there are four basic forms: outward-opening top-hung, outward-opening bottom-hung, inward-opening top-hung, and inward-opening bottom-hung. However, according to actual application needs, outward-opening top-hung windows and inward-opening bottom-hung windows are the two mainstream casement-hung windows on the market. Among them, outward-opening top-hung windows have two opening methods: one side rotates outward and opens inward, and the lower part rotates outward and hangs. In actual applications, they are often mistakenly called outward-opening bottom-hung windows. However, according to relevant industry standards, outward-opening top-hung windows with rotating hinges (generally part of the upper sliding support assembly) at the upper end are called outward-opening top-hung windows, not outward-opening bottom-hung windows; inward-opening bottom-hung windows have two opening methods: one side rotates inward and opens inward, and the upper part rotates inward and hangs. In actual applications, they are often called inward-opening tilt windows.

[0003] The basic structure of a casement hung window includes a window frame and a window sash. A handle is installed on the vertical side of the window sash (some handles are also installed on the lower side of the window sash), and a transmission assembly connected to the handle is installed on the vertical side of the window sash close to the handle. An upper sliding support assembly is installed on the upper side of the window sash, and the upper sliding support assembly is also connected to the upper side of the window frame; a lower sliding support assembly is installed on the lower side of the window sash, and the lower sliding support assembly is also connected to the lower side of the window frame. The upper end of the transmission assembly can be connected to the transmission rod in the upper sliding support assembly and realize a 90° steering transmission function through an elastic band. The lower end of the transmission assembly can be connected to the transmission rod in the lower sliding support assembly and realize a 90° steering transmission function through an elastic band, thereby realizing corresponding control of the upper sliding support assembly and / or the lower sliding support assembly. When the handle is rotated, the corresponding functions of opening horizontally (opening outward or opening inward), hanging opening (hanging outward or hanging inward) and locking are realized. Generally, when the handle is in the downward state (generally defined as the initial state of the handle, that is, rotating 0°), the window sash is in a closed state and locked with the window frame, that is, a locked state; when the handle is in the horizontal state (generally defined as the handle rotated 90°), the window sash is in an unlocked state. At this time, the handle side of the window sash can be rotated outward or inward to open, that is, opening horizontally; when the handle is in the upward state (generally defined as the handle rotated 180°), the window sash is in an unlocked state. At this time, the lower or upper side of the window sash can be rotated to open, that is, hanging opening.

[0004] At present, traditional casement hung windows still have the following defects: there is no function in the lower sliding support assembly to prevent the handle from rotating after the handle is rotated to 180° and the hanging function is realized (this function is beneficial for anti-theft), and there is no function that the handle must be rotated to 180° to realize the hanging function, or, there are these two functions, but the structure is not reasonable, and the control method is not smooth and reliable enough; in addition, the connection structure of multiple rotating parts in the lower sliding support assembly is not reasonable, which easily leads to the problem of either smooth opening and closing but poor stability after opening, or good stability after opening but large opening and closing resistance. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and provide a lower sliding support assembly of a casement-hung window with a reliable locking function, which is convenient for controlling the hanging function.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A sliding support assembly on a casement hung window with a reliable locking function comprises a window sash connecting cross bar for connecting to a window sash, a transverse transmission rod for transmission, and a window frame connecting rod for connecting to the lower side of a window frame, wherein the transverse window sash connecting cross bar and the transverse window frame connecting rod are connected via a rotating assembly, wherein the rotating assembly comprises a first rotating rod, wherein a position close to a first end of the first rotating rod is rotatably connected to the window sash connecting cross bar, the first rotating rod is located below the window sash connecting cross bar, a first end of the first rotating rod is provided with a positioning groove, and a position on the first rotating rod that is rotatably connected to the window sash connecting cross bar is located at a position close to a first end of the first rotating rod. The positioning groove is on one side away from the first end portion of the first rotating rod, and a notch connected to the positioning groove is provided in the middle position of the first end portion of the first rotating rod. A vertical first limiting column is provided at the lower part of the position close to the positioning groove on the transverse transmission rod, and the lower end of the first limiting column passes through the corresponding strip through hole on the window sash connecting cross bar and meets the following conditions: when the handle on the window sash is rotated to an angle allowing the window sash to be hung open, the lower end of the first limiting column passes through the notch and is placed in the positioning groove; when the window sash is hung open, the lower end of the first limiting column is located in the positioning groove and cannot detach from the notch.

[0008] Preferably, in order to achieve the purpose of completing more control functions such as locking and sealing functions through the vertical side of the window sash without a handle, and at the same time to achieve the function of hanging open only when the handle is rotated to 180°, one end of the second end of the window sash connecting cross bar close to the first rotating rod is bent upward by 90° to form a window sash connecting vertical rod for connecting to the vertical side of the window sash without a handle, and the "L"-shaped steering angle connecting rod is installed at the connecting position between the window sash connecting cross bar and the window sash connecting vertical rod, the steering angle position of the "L"-shaped steering angle connecting rod is arc-shaped and is provided with a strip-shaped limiting groove, the limiting groove is "L"-shaped and its steering angle position is arc-shaped, an elastic band is placed in the limiting groove, and the two ends of the elastic band are respectively connected to one end of the transverse transmission rod and the vertical The first rotating rod is connected to the lower end of the transmission rod, and two limit strips parallel to each other and to the length direction of the first rotating rod are provided on the top of the first rotating rod near its second end. One end of the transverse transmission rod close to the elastic band is bent upward to form an arc-shaped portion and a vertical second limit column is provided at its lower portion. The second limit column passes through the corresponding through hole on the elastic band and is placed between the two limit strips and can be limitedly moved in the length direction of the first rotating rod and meets the following conditions: when the handle on the window sash is rotated to an angle allowing the window sash to be suspended, the second limit column is just separated from the two limit strips, and when the handle is rotated to any rotation position other than the angle allowing the window sash to be suspended, the second limit column is located between the two limit strips.

[0009] Preferably, in order to facilitate the installation of the "L"-shaped steering angle link and to facilitate the setting of more control structures, the connection position between the window sash connecting horizontal rod and the window sash connecting vertical rod is an oblique connecting rod, and the angles between the two ends of the oblique connecting rod and the window sash connecting horizontal rod and the window sash connecting vertical rod are both obtuse angles.

[0010] Preferably, in order to avoid excessive friction between the second limiting column and the limiting strip to affect the smoothness of operation, the lower end of the second limiting column is provided with a square mushroom head with a larger outer diameter; in order to achieve a good corner transmission function, the elastic belt is a thin steel belt.

[0011] Preferably, in order to achieve the functions of smooth opening and closing of the window sash and good stability after opening, the rotating assembly also includes a slider, a second rotating rod, a third rotating rod and a fourth rotating rod, the window frame connecting rod is provided with a sliding groove, the lower part of the slider is placed in the sliding groove and can slide in the length direction of the window frame connecting rod, the second end of the first rotating rod is rotatably connected to the first end of the two ends of the second rotating rod, the second end of the two ends of the second rotating rod is rotatably connected to the first end of the two ends of the slider, the second end of the two ends of the slider is rotatably connected to the first end of the two ends of the third rotating rod, the second end of the two ends of the third rotating rod is rotatably connected to the middle section of the fourth rotating rod, the first end of the two ends of the fourth rotating rod is rotatably connected to the window frame connecting rod, and the second end of the two ends of the fourth rotating rod is rotatably connected to the middle section of the first rotating rod.

[0012] Preferably, in order to facilitate adjustment of the tightness of fit between the slider and the slide groove so as to adjust the tightness of opening and closing of the window sash, an adjustment screw for adjusting the tightness of fit between the slider and the slide groove is provided on the slider.

[0013] Preferably, in order to facilitate transportation and storage and to facilitate assembly during installation, the window sash connecting cross bar comprises two independent sections and the ends of the two sections close to each other are respectively provided with semicircular notches, and the two semicircular notches are butted together to form a circular through hole, and a rivet is provided on the first rotating rod near its first end, and the upper end of the rivet passes through the circular through hole and is provided with a rivet cap with an outer diameter larger than the aperture diameter of the circular through hole.

[0014] The beneficial effects of the utility model are:

[0015] The utility model can realize the function of preventing the handle from rotating after the handle is rotated to 180° and suspended by setting a positioning groove and a first limit column that cooperate with each other, thereby avoiding causing confusion in the handle transmission function, and at the same time having the function of limiting the maximum suspension angle of the window sash; by designing mutually connected window sash connecting horizontal bars and window sash connecting vertical bars and installing an "L"-shaped steering angle connecting rod at the connecting position, installing an elastic belt at the steering angle position of the "L"-shaped steering angle connecting rod, and utilizing the elastic belt to transmit the moving function of the horizontal transmission rod to the vertical transmission rod, more functions can be realized through the vertical side of the window sash without a handle, such as realizing a four-side locking and sealing function, etc., and at the same time, by setting a limit strip and a second limit column that cooperate with each other, the function of suspension can be realized when the handle must be rotated to 180°; by designing a rotating assembly including a slider, a first rotating rod, a second rotating rod, a third rotating rod and a fourth rotating rod, the lower sliding support assembly can have the functions of smooth opening and closing of the window sash and good stability after opening, and cooperates with the positioning gear and related structures to realize better opening and closing control function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the three-dimensional structural schematic diagrams of the lower sliding support assembly of the casement-hung window with a reliable locking function described in the utility model, and the corresponding window sash in the figure is in a closed state;

[0017] Figure 2 It is a partially enlarged three-dimensional structural schematic diagram of the steering angle position of the lower sliding support assembly of the casement-hung window with a reliable locking function described in the utility model;

[0018] Figure 3 It is a partially enlarged three-dimensional structural schematic diagram of the first end of the first rotating rod and related components of the lower sliding support assembly of the casement-hung window with a reliable locking function described in the utility model, and the corresponding window sash in the figure is in a suspended open state;

[0019] Figure 4 It is a partially enlarged three-dimensional structural schematic diagram of the positioning gear and related components of the lower support assembly of the casement-hung window with a reliable locking function described in the utility model, and the corresponding window sash in the figure is in a closed state;

[0020] Figure 5 This is the second three-dimensional structural schematic diagram of the lower sliding support assembly of the casement-hung window with a reliable locking function described in the utility model, and the corresponding window sash in the figure is in a casement-open state;

[0021] Figure 6 This is the third three-dimensional structural schematic diagram of the lower sliding support assembly of the casement-hung window with a reliable locking function described in the utility model, and the corresponding window sash in the figure is in a suspended open state. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] like Figure 1-Figure 6As shown, the lower sliding support assembly of the casement-hung window with a reliable locking function described in the utility model comprises a window sash connecting cross bar 9 for connecting to a window sash (not shown in the figure), a transverse transmission rod 14 for transmission, and a window frame connecting rod 20 for connecting to the lower side of a window frame (not shown in the figure). The transverse window sash connecting cross bar 9 and the transverse window frame connecting rod 20 are connected by a rotating assembly, and the rotating assembly comprises a first rotating rod 7, a position of the first rotating rod 7 close to the first end of the two ends is rotationally connected to the window sash connecting cross bar 9, the first rotating rod 7 is located below the window sash connecting cross bar 9, a first end of the first rotating rod 7 is provided with a positioning groove 11, and a position of the first rotating rod 7 rotationally connected to the window sash connecting cross bar 9 is located at a fixed position. The positioning groove 11 is on one side away from the first end portion of the first rotating rod 7, and a notch 19 connected to the positioning groove 11 is provided in the middle position of the first end portion of the first rotating rod 7. A vertical first limiting column 12 is provided at the lower part of the position close to the positioning groove 11 on the transverse transmission rod 14, and the lower end of the first limiting column 12 passes through the corresponding strip through hole on the window sash connecting cross bar 9 and meets the following conditions: when the handle on the window sash (not shown in the figure) is rotated to an angle allowing the window sash to be hung open (that is, when the handle is rotated to 180°), the lower end of the first limiting column 12 passes through the notch 19 and is placed in the positioning groove 11; when the window sash is hung open, the lower end of the first limiting column 12 is located in the positioning groove 11 and cannot detach from the notch 19.

[0024] like Figure 1-Figure 6 As shown, the utility model also discloses the following more optimized specific structures:

[0025] In order to achieve the purpose of completing more control functions such as locking and sealing functions through the vertical side of the window sash without a handle, and at the same time to achieve the function of hanging when the handle is rotated to 180°, one end of the window sash connecting cross bar 9 close to the second end of the first rotating rod 7 is bent upward 90° to form a window sash connecting vertical rod 1 for connecting to the vertical side of the window sash without a handle. The "L"-shaped steering angle connecting rod 5 is installed at the connecting position between the window sash connecting cross bar 9 and the window sash connecting vertical rod 1. The steering angle position of the "L"-shaped steering angle connecting rod 5 is arc-shaped and is provided with a strip-shaped limiting groove (not marked in the figure). The limiting groove is "L"-shaped and its steering angle position is arc-shaped. The elastic band 4 is placed in the limiting groove, and the two ends of the elastic band 4 are respectively connected to one end of the transverse transmission rod 14 and the lower end of the vertical transmission rod 2 The first rotating rod 7 is connected to the second end thereof, and two limiting strips 6 are provided on the top of the first rotating rod 7, which are parallel to each other and parallel to the length direction of the first rotating rod 7. One end of the transverse transmission rod 14, which is close to the elastic band 4, is bent upward to form an arc-shaped portion 28, and a vertical second limiting column 29 is provided at the bottom thereof. The second limiting column 29 passes through the corresponding through hole on the elastic band 4 and is placed between the two limiting strips 6 and can be limitedly moved in the length direction of the first rotating rod 7 and meets the following conditions: when the handle on the window sash is rotated to an angle that allows the window sash to be suspended (that is, when the handle is rotated to 180°), the second limiting column 29 is just separated from the two limiting strips 6, and when the handle is rotated to any rotation position other than the angle that allows the window sash to be suspended, the second limiting column 29 is located between the two limiting strips 6. According to actual needs, a lock head can be provided on the window sash connecting vertical rod 1, and a lock seat can be installed at the corresponding position of the window frame, so that the locking and sealing function of the vertical side of the window sash without a handle can be achieved.

[0026] In order to facilitate the installation of the "L"-shaped steering angle link and to facilitate the setting of more control structures, the connection position between the window sash connecting cross bar 9 and the window sash connecting vertical bar 1 is an oblique connecting rod 3, and the angles between the two ends of the oblique connecting rod 3 and the window sash connecting cross bar 9 and the window sash connecting vertical bar 1 are both obtuse angles; for example: a control bolt can be set on the oblique connecting rod 3, and a block can be set on the elastic band 4. The function of blocking the block or not blocking the block can be achieved by screwing in or out the control bolt, thereby realizing the control of the moving range of the elastic band, that is, realizing the control of the rotation angle of the handle.

[0027] In order to avoid excessive friction between the second limiting column 29 and the limiting strip 6 that affects the smoothness of operation, the lower end of the second limiting column 29 is provided with a square mushroom head with a larger outer diameter; in order to achieve a good corner transmission function, the elastic belt 4 is a thin steel belt.

[0028] In order to achieve the functions of smooth opening and closing of the window sash and good stability after opening, the rotating assembly also includes a slider 17, a second rotating rod 16, a third rotating rod 18 and a fourth rotating rod 21. A sliding groove (not marked in the figure) is provided on the window frame connecting rod 20. The lower part of the slider 17 is placed in the sliding groove and can slide in the length direction of the window frame connecting rod 20. The second end of the first rotating rod 7 is rotationally connected to the first end of the two ends of the second rotating rod 16, the second end of the two ends of the second rotating rod 16 is rotationally connected to the first end of the two ends of the slider 17, the second end of the two ends of the slider 17 is rotationally connected to the first end of the two ends of the third rotating rod 18, the second end of the two ends of the third rotating rod 18 is rotationally connected to the middle section of the fourth rotating rod 21, the first end of the two ends of the fourth rotating rod 21 is rotationally connected to the window frame connecting rod 20, and the second end of the two ends of the fourth rotating rod 21 is rotationally connected to the middle section of the first rotating rod 7.

[0029] In order to facilitate the adjustment of the tightness of fit between the slider 17 and the slide groove so as to adjust the tightness of opening and closing of the window sash, an adjustment screw 8 for adjusting the tightness of fit between the slider 17 and the slide groove is provided on the slider 17.

[0030] In order to facilitate transportation and storage and to facilitate assembly during installation, the window sash connecting cross bar 9 includes two independent sections and the ends of the two sections close to each other are respectively provided with semicircular notches, and the two semicircular notches are connected to form a circular through hole, and a rivet 10 is provided on the first rotating rod 7 near its first end, and the upper end of the rivet 10 passes through the circular through hole and is provided with a rivet cap with an outer diameter larger than the aperture diameter of the circular through hole.

[0031] like Figure 1-Figure 6 As shown, in order to realize the function of reliably controlling the window sash horizontal opening angle, hanging opening angle and the locking state after opening, so that the window sash has a stronger ability to prevent strong winds after opening, and at the same time improves the safety of use, the utility model also shows the following more optimized structures:

[0032] The positioning gear 22 is fixedly connected to the lower side of the second end of the fourth rotating rod 21, the lower part of the screw of the vertical connecting screw 23 is provided with an external thread and the middle and upper part has no external thread, the lower end of the screw of the connecting screw 23 passes through the corresponding through hole of the second end of the fourth rotating rod 21 and the vertical through hole of the positioning gear 22 and is connected to the corresponding screw hole of the window frame connecting rod 20, two compression spring seats 25 are provided on the window frame connecting rod 20 near the positioning gear 22, two positioning rods 30 and a control rod 31 are provided on the window frame connecting rod 20 between the two compression spring seats 25, the first ends of the two positioning rods 30 are rotatably installed on the window frame connecting rod 20 through the pin shaft 32, and one end of the two compression springs 33 is respectively connected to the two compression spring seats 25 The other ends of the two compression springs 33 are respectively connected to the middle sections of the two positioning rods 30, the control rod 31 is located between the two positioning rods 30, and the control handle 26 is connected to the upper middle position of the control rod 31. The second ends of the two positioning rods 30 are respectively located on both sides of the positioning gear 22 and meet the following conditions: when the control rod 31 rotates until both ends are no longer in contact with the two positioning rods 30, the two compression springs 33 respectively press the two positioning rods 30 and make their second ends both clamp the outer teeth on the positioning gear 22 and make the positioning gear 22 unable to rotate; when the control rod 31 rotates until both ends respectively support the two positioning rods 30, the second ends of the two positioning rods 30 are disengaged from the outer teeth on the positioning gear 22 and make the positioning gear 22 able to rotate.

[0033] In order to further improve the ability to control the friction force of opening and closing the window sash, wear-resistant gaskets 24 are respectively provided between the top of the positioning gear 22 and the nut of the connecting screw 23, and between the bottom of the positioning gear 22 and the window frame connecting rod 20, and the screw rod of the connecting screw 23 passes through the center through holes of the two wear-resistant gaskets 24.

[0034] For ease of application, the two compression spring seats 25, the two positioning rods 30, the two compression springs 33 and the control rod 31 are all placed in the "L"-shaped control cover 27 and the control handle 26 is located above the control cover 27. The control rod 31 is installed on the window frame connecting rod 20 through a rotating shaft to realize the positioning and rotation function, or the control rod 31 realizes the positioning and rotation function through the connection between itself and the control handle 26 and the connection between the control cover 27.

[0035] Figure 1 and Figure 3 Also shown is a limit screw 13 installed on the window sash connecting cross bar 9, the limit screw 13 passes through the corresponding bar-shaped through hole on the transverse transmission rod 14 to limit the movement of the transverse transmission rod 14; Figure 1 and Figure 5 Also shown is a transmission rod 15 connected to the transverse transmission rod 14 for connecting to or extending the handle, and the two are connected to each other via a rack; these are all conventional adaptive structures.

[0036] like Figure 1-Figure 6 As shown, when used, the lower sliding support assembly of the casement-hung window with a reliable locking function of the utility model is installed on the casement-hung window (such as an outward-opening top-hung window), the window sash connecting cross bar 9 and the window sash connecting vertical bar 1 are respectively connected to the lower side of the window sash and the vertical side without a handle, the handle is installed on the other vertical side opposite to the window sash, and the window frame connecting rod 20 is connected to the lower side of the window frame; the various functions of the handle are specifically described below based on the rotation angle of the handle:

[0037] When the handle is in the initial state, that is, rotated 0°, that is, vertically downward, the window sash and the window frame are in a locked and sealed state (the locked and sealed method is the prior art).

[0038] Before opening the window sash, first rotate the control handle 26 to rotate the control rod 31 until its two ends respectively abut against the two positioning rods 30. At this time, the second ends of the two positioning rods 30 are separated from the outer teeth of the positioning gear 22, and the fourth rotating rod 21 can rotate freely relative to the window frame connecting rod 20. Alternatively, the control handle 26 itself is in this state and no operation is required. Then the handle can be rotated.

[0039] When the handle is rotated 90°, that is, in the horizontal direction, the locked and sealed state between the window sash and the window frame is released (the release method is the existing technology), and the window sash can now realize the horizontal opening function. The user can hold the handle and push it outward to open the window sash outward. Figure 5 As shown, during the horizontal opening process, the first rotating rod 7 does not rotate, the second rotating rod 16, the third rotating rod 18, the fourth rotating rod 21 and the positioning gear 22 rotate adaptively, and the slider 17 moves adaptively to cooperate to complete the outward opening function. The friction force in the opening process, that is, the magnitude of the opening resistance, is mainly determined by the friction force between the slider 17 and the slide groove and the friction force between the wear-resistant gasket 24 and the associated components. When the window sash is in the horizontal opening state, the second limit column 29 is always located between the two limit bars 6, and the window sash cannot realize the hanging opening function. In this state, if the user needs to lock the opening angle and the stable state of the angle, the control handle 26 is rotated to rotate the control rod 31 until its two ends are separated from the two positioning rods 30 respectively. At this time, the second ends of the two positioning rods 30 are against the outer teeth of the positioning gear 22 under the action of the corresponding compression spring 33, and the fourth rotating rod 21 cannot rotate freely relative to the window frame connecting rod 20, realizing the locking function of the outward opening angle of the window sash.

[0040] When the user needs to suspend the window, the user first holds the handle to close the window sash, and then holds the handle and rotates it upward 90°, that is, a total rotation of 180°, that is, when it is in the vertical upward direction, the second limit column 29 is separated from the two limit bars 6, and at the same time, the lower end of the first limit column 12 passes through the notch 19 and is placed in the positioning groove 11, and the window sash can now be suspended; at this time, if the control handle 26 locks the positioning gear 22 and cannot rotate, it is also necessary to rotate the control handle 26 in the aforementioned manner to allow the positioning gear 22 to rotate freely in order to realize the sash suspension function. The user can complete the sash suspension function by directly pushing the lower side of the window sash to a suitable position or an extreme position, such as Figure 6 As shown, during the suspension process, the first rotating rod 7, the second rotating rod 16, the third rotating rod 18, the fourth rotating rod 21 and the positioning gear 22 all rotate adaptively, and the slider 21 moves adaptively to cooperate to complete the suspension function. After suspension, the lower end of the first limit column 12 is placed in the positioning groove 11 and cannot be separated from the positioning groove 15 through the notch 19. The handle can only rotate slightly within the range limited by the positioning groove 11 to the first limit column 12, so as to avoid the problem of the transmission function affecting each other due to the arbitrary rotation of the handle. In this state, if the user needs to lock the opening angle and the stable state of the angle, the control handle 26 is rotated to rotate the control rod 31 until its two ends are separated from the two positioning rods 30 respectively. At this time, the second ends of the two positioning rods 30 are against the outer teeth of the positioning gear 22 under the action of the corresponding compression spring 33, and the fourth rotating rod 21 cannot rotate freely relative to the window frame connecting rod 20, so as to achieve the locking function of the window sash outward opening angle. If the user wants to close the window sash, he first holds the handle to pull the window sash back. At this time, the lower end of the first limit column 12 is separated from the positioning groove 11 through the notch 19, and then the handle can be rotated to a certain angle (for example, 135°) to achieve the locking and sealing function between the window sash and the window frame, thereby realizing the window sash locking and sealing function under the suspended open function.

[0041] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A lower sliding support assembly for a casement-hung window with a reliable locking function, comprising a window sash connecting cross bar for connecting with a window sash, a transverse transmission rod for transmission, and a window frame connecting rod for connecting with the lower side of a window frame, wherein the transverse window sash connecting cross bar and the transverse window frame connecting rod are connected by a rotating assembly, wherein the rotating assembly comprises a first rotating rod, wherein a position of the first rotating rod near a first end of two ends is rotatably connected to the window sash connecting cross bar, and the first rotating rod is located below the window sash connecting cross bar, and is characterized in that: A positioning groove is provided at the first end of the first rotating rod, and the position on the first rotating rod that is rotatably connected to the window sash connecting cross rod is located on a side of the positioning groove away from the first end portion of the first rotating rod, and a notch connected to the positioning groove is provided at the middle position of the first end portion of the first rotating rod, and a vertical first limiting column is provided at the lower part of the position close to the positioning groove on the transverse transmission rod, and the lower end of the first limiting column passes through the corresponding strip-shaped through hole on the window sash connecting cross rod and meets the following conditions: when the handle on the window sash is rotated to an angle allowing the window sash to be hung open, the lower end of the first limiting column passes through the notch and is placed in the positioning groove, and when the window sash is hung open, the lower end of the first limiting column is located in the positioning groove and cannot detach from the notch.

2. The lower sliding support assembly of the casement-hung window with reliable locking function according to claim 1, characterized in that: One end of the window sash connecting cross bar near the second end of the first rotating rod is bent upward by 90° to form a window sash connecting vertical rod for connecting to the vertical side of the window sash without a handle, and an "L"-shaped steering angle connecting rod is installed at the connecting position between the window sash connecting cross bar and the window sash connecting vertical rod, the steering angle position of the "L"-shaped steering angle connecting rod is arc-shaped and is provided with a strip-shaped limiting groove, the limiting groove is "L"-shaped and its steering angle position is arc-shaped, an elastic band is placed in the limiting groove, the two ends of the elastic band are respectively connected to one end of the horizontal transmission rod and the lower end of the vertical transmission rod, and two mutually opposite positions are provided on the top of the first rotating rod near its second end. The limit strips are parallel to each other and to the length direction of the first rotating rod, and one end of the transverse transmission rod close to the elastic band is bent upward to form an arc portion and a vertical second limit column is provided at the lower part. The second limit column passes through the corresponding through hole on the elastic band and is placed between the two limit strips and can be limitedly moved in the length direction of the first rotating rod and meets the following conditions: when the handle on the window sash is rotated to an angle allowing the window sash to be suspended, the second limit column is just separated from the two limit strips, and when the handle is rotated to any rotation position other than the angle allowing the window sash to be suspended, the second limit column is located between the two limit strips.

3. The lower sliding support assembly of the casement-hung window with reliable locking function according to claim 2, characterized in that: The connection position between the window sash connecting cross bar and the window sash connecting vertical bar is an oblique connecting bar, and the angles between the two ends of the oblique connecting bar and the window sash connecting cross bar and the window sash connecting vertical bar are both obtuse angles.

4. The lower sliding support assembly of the casement-hung window with reliable locking function according to claim 2, characterized in that: The lower end of the second limiting column is provided with a square mushroom head with a larger outer diameter; the elastic band is a thin steel band.

5. The lower sliding support assembly of a casement-hung window with a reliable locking function according to any one of claims 1 to 4, characterized in that: The rotating assembly also includes a slider, a second rotating rod, a third rotating rod and a fourth rotating rod, the window frame connecting rod is provided with a sliding groove, the lower part of the slider is placed in the sliding groove and can slide in the length direction of the window frame connecting rod, the second end of the first rotating rod is rotatably connected to the first end of the two ends of the second rotating rod, the second end of the two ends of the second rotating rod is rotatably connected to the first end of the two ends of the slider, the second end of the two ends of the slider is rotatably connected to the first end of the two ends of the third rotating rod, the second end of the two ends of the third rotating rod is rotatably connected to the middle section of the fourth rotating rod, the first end of the two ends of the fourth rotating rod is rotatably connected to the window frame connecting rod, and the second end of the two ends of the fourth rotating rod is rotatably connected to the middle section of the first rotating rod.

6. The lower sliding support assembly of the casement-hung window with reliable locking function according to claim 5, characterized in that: The sliding block is provided with an adjusting screw for adjusting the tightness of the fit between the sliding block and the sliding slot.

7. The lower sliding support assembly of a casement-hung window with a reliable locking function according to any one of claims 1 to 4, characterized in that: The window sash connecting cross bar includes two independent sections, and the ends of the two sections close to each other are respectively provided with semicircular notches, and the two semicircular notches are connected to form a circular through hole. A rivet is provided on the first rotating rod near its first end, and the upper end of the rivet passes through the circular through hole and is provided with a rivet cap with an outer diameter larger than the aperture of the circular through hole.

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