CN214365585U - Light five-link 180-degree flat-open hinge - Google Patents

Abstract

The application discloses a light-duty five-link 180-degree flat-open hinge, and relates to hardware of doors and windows. The flat-open hinge comprises a bottom plate connected with a window frame, a starting link rod connected with a window sash, a long link rod and a short link rod riveted with the starting link rod, a long support link rod and a short support link rod respectively riveted with the long link rod and the bottom plate, and a long support link rod riveted with the short link rod, and forms an opening and closing structure consisting of seven rivet shafts. This application has increased the thickness of link rod, has used riveting connection structure in addition, has increased bearing capacity. All parts are made of metal materials, and even under the high-temperature condition, all functions of the hinge cannot fail, so that the fire safety is guaranteed. The window sash is driven to rotate through the rivet shaft, extra movement space does not need to be increased, screws can be arranged at the bottom plate, the bottom plate is fixed with the window frame, and the installation and connection are firm. Therefore, the application greatly improves the functions of bearing, theft prevention, fire control and installation and provides safety guarantee for the installation and use of users.

Description

Light five-link 180-degree flat-open hinge

Technical Field

The application relates to door and window hardware accessories, in particular to a light five-link 180-degree flat-open hinge.

Background

With the development of scientific and technical progress, many traditional door and window hardware accessory products in the market begin to be promoted and innovated. For example, the hardware fittings used for windows in the current market are sliding supports, and sliding support hinges in various types are available in the market, and the sliding support hinges realize the opening and closing of the window sash through the movement of a connecting rod, a sliding block and a sliding groove.

The structure limits the thickness of the connecting rod and seriously influences the bearing force of the window sash. Above-mentioned structure makes the spout installation also receive the restriction, because the slider need move in the spout for unable mounting screw is fixed with the window frame in the spout, leads to potential safety hazards such as erection joint insecure. The slider is made of plastic, and can cause failure under the high temperature condition. Therefore, the existing sliding support structure has the defects of bearing, theft prevention, fire control and installation.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

The application provides a 180 flat-open hinges on five light-duty connecting rods for install in window department, in order to drive the window is opened or is closed, the window includes window frame and casement, 180 flat-open hinges on five light-duty connecting rods adopt the metal to make, include:

the window frame comprises a bottom plate and a window frame, wherein the bottom plate is used for being installed at a window frame, and a one-way hanging piece is arranged at the bottom plate and is configured to be used for quickly installing the bottom plate at the window frame;

an actuating link for mounting at the sash for supporting, said actuating link further configured as a quick mount structure;

the short connecting rod is used for connecting the starting connecting rod and the long supporting connecting rod, one end of the short connecting rod is riveted with the starting connecting rod, and the other end of the short connecting rod is riveted with the long supporting connecting rod;

the long connecting rod is used for connecting the starting connecting rod, the long supporting connecting rod and the short supporting connecting rod, one end of the long connecting rod is riveted with the starting connecting rod, the middle of the long connecting rod is riveted with the long supporting connecting rod, and the other end of the long connecting rod is riveted with the short supporting connecting rod; and

each support rod is used for connecting the long connecting rod and the bottom plate, one end of each support rod is riveted with the long connecting rod, and the other end of each support rod is riveted with the bottom plate;

in the process of opening or closing the window sash, the window sash drives the starting link rod to rotate, drives the short link rod and the long link rod to rotate relative to the starting link rod, further drives the long support link rod and the short support link rod to rotate relative to the bottom plate, and is configured in such a way that in a fully opened state of the window sash, the short link rod, the long support link rod and the short support link rod are opened, so that the center line of the starting link rod is parallel to the center line of the bottom plate, in a fully closed state of the window sash, the starting link rod, the short link rod, the long support link rod and the short support link rod are folded at the bottom plate, and the center line of the starting link rod is parallel to the center line of the bottom plate.

Optionally, the bottom plate includes flaky first arm and second arm, first arm is the level form, the second arm perpendicular to one side department of first arm, the second arm is used for connecting the vertical edge of window frame, first arm is by arranging one side to the opposite side of second arm is equipped with two sets of bellied rivet seats that make progress and sunken recess in proper order, the rivet seat is used for holding the rivet axle, the recess is used for holding one-way lacing film and can make one-way lacing film freely rotates around its center.

Optionally, the one-way hanging piece is a sheet structure with one end being an arc end, a boss is arranged in the one-way hanging piece close to the arc end, and a hexagonal hole is formed in the boss.

Optionally, the two ends and the middle of the long support rod are provided with corresponding holes for installing corresponding rivet shafts.

Optionally, the two ends of the short support rod have corresponding holes for installing corresponding rivet shafts.

Optionally, the two ends and the middle of the long link rod are provided with corresponding holes for installing corresponding rivet shafts.

Optionally, the two ends of the short link have corresponding holes for mounting corresponding rivet shafts.

Optionally, the activation link comprises:

the horizontal rod is provided with two downward concave parts, each concave part is internally provided with a rivet hole, and each rivet hole is used for passing through a corresponding rivet shaft; and

the vertical rod is formed by one side of the horizontal rod being vertical, and the other side of the horizontal rod being vertically bent and then being vertically bent, the upper section of the vertical rod is provided with two arms with a notch in the middle, the upper section of the vertical rod is used for being inserted into a window sash, and the two arms are squeezed by a tool to be elastically clamped into the section groove of the window sash so as to fix the starting link rod at the window sash.

The light-duty five-link 180-degree flat-open hinge comprises a bottom plate connected with a window frame, a starting link connected with a window sash, a long link and a short link riveted with the starting link, a long support link and a short support link respectively riveted with the long link and the bottom plate, and a long support link riveted with the short link, and forms an opening and closing structure consisting of seven rivet shafts. This application has cancelled slider, the spout structure among the prior art, through above-mentioned riveted structure for the thickness of long link rod, short link rod, long link rod and short link rod is 6mm, compares link rod thickness among the prior art and is 5.5mm, has increased thickness, and spare part fit clearance optimizes, has used riveting connection structure in addition, has increased the bearing capacity of this application. All spare parts of this application are all to adopt metal material to make, even under the high temperature condition, all functions of hinge can not become invalid, make fire control safety obtain the guarantee. This application drives the casement through the rivet axle and rotates, need not to increase extra motion space for can beat the screw in bottom plate department, fix bottom plate and window frame, make installation firm in connection. Therefore, the application greatly improves the functions of bearing, theft prevention, fire control and installation and provides safety guarantee for the installation and use of users.

In addition, this application adopts seven rivet axle pivoted modes, compares prior art's spout, slider structure, makes the hinge open, close more easily smooth and easy.

In addition, this application is installed through starting link rod and casement fast, through one-way lacing film and window frame fast installation to it is more convenient to be connected with casement and window frame, has reduced workman's installation intensity.

In addition, the hinge of this application is closed the back, hides completely in the die cavity of casement and window frame, makes the window more pleasing to the eye.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a light-weight five-link 180 ° swing hinge according to an embodiment of the present application in an open state;

FIG. 2 is a schematic front view of the light five-bar 180 ° flat-open hinge of FIG. 1 in a closed position;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a side view of FIG. 2;

FIG. 5 is a schematic front view of the activation link shown in FIG. 1;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a side view of FIG. 5;

FIG. 8 is a schematic front view of the base plate shown in FIG. 1;

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a side view of FIG. 8;

FIG. 11 is a front view of the one-way hanging piece shown in FIG. 1;

fig. 12 is a schematic cross-sectional view taken along line a-a in fig. 11.

The symbols in the drawings represent the following meanings:

a 100 light five-link 180-degree flat-open hinge,

a base plate 10, a first arm 11, a groove 12, a rivet seat 13, a second arm 14,

the length of the support rod is 20,

30 short support rods are connected with the support rods,

the length of the 40 long connecting rods is,

50 of the short link rods are connected with each other,

60 actuating links, 61 horizontal rods, 62 recesses, 63 rivet holes, 64 vertical rods, 65 arms, 66 notches,

70 unidirectional hanging pieces, 71 arc ends, 72 bosses, 73 hexagonal holes,

1 first rivet axle, 2 copper gasket, 3 second rivet axles, 4 third rivet axles.

Detailed Description

Fig. 1 is a schematic structural view of a light-weight five-link 180 ° swing hinge in an open state according to an embodiment of the present application. Fig. 2 is a schematic front view of the light-weight five-link 180 ° swing hinge of fig. 1 in a closed state. Fig. 3 is a top view of fig. 2. Fig. 4 is a side view of fig. 2. As shown in fig. 1, and also referring to fig. 2 to 4, the present embodiment provides a light-weight five-link 180 ° flat-open hinge 100 for being installed at a window to open or close the window. The window comprises a window frame and a window sash. The light-duty five-link 180-degree flat-open hinge 100 is made of metal and comprises: a base plate 10, a start link 60, a short link 50, a long link 40, a long support link 20, and a short support link 30. The bottom plate 10 is used for being installed at a window frame, and the one-way hanging piece 70 is arranged at the bottom plate 10 and is configured to install the bottom plate 10 at the window frame quickly. The actuating link 60 is for mounting at the sash, acting as a backup, said actuating link 60 also being configured in a quick-mount configuration. The short link 50 connects the actuating link 60 and the long support link 20, and one end of the short link 50 is riveted to the actuating link 60 by the third rivet shaft 4. The other end of the short link 50 is riveted to the long link 40 through the second rivet shaft 3. The long link 40 is used to connect the actuating link 60, the long support link 20 and the short support link 30. One end of the long link 40 is riveted to the actuating link 60 through the third rivet shaft 4. The long link 40 is riveted to the long support link 20 via the second rivet shaft 3. The other end of the long link 40 is riveted to the short link 30 by the second rivet shaft 3. Each of the long and short support links 20 and 30 is used to connect the long link 40 with the base plate 10, and one end of each support link is riveted with the long link 40 and the other end is riveted with the base plate 10. One end of the long support link 20 is riveted to the long link 40 by the second rivet shaft 3, and the other end of the long support link 20 is riveted to the long link 40 by the first rivet shaft 1. One end of the short support link 30 is riveted to the long link 40 through the second rivet shaft 3, and the other end of the short support link 30 is riveted to the long link 40 through the first rivet shaft 1. In the process of opening or closing the window sash, the window sash drives the starting link 60 to rotate, drives the short link 50 and the long link 40 to rotate relative to the starting link 60, and further drives the long support link 20 and the short support link 30 to rotate relative to the bottom plate 10, and is configured such that when the starting link 60 of the present application is pushed 180 ° to one side, the hinge is in a fully open state, at this time, the window sash is in a fully open state, and the short link 50, the long link 40, the long support link 20, and the short support link 30 are opened, so that the center line of the starting link 60 is parallel to the center line of the bottom plate 10; in the fully closed state of the window sash, the actuating link 60, the short link 50, the long link 40, the long backup link 20, and the short backup link 30 are folded at the bottom plate 10, that is, all the links overlap the bottom plate 10 in the vertical, horizontal, and vertical directions, and are hidden in the cavity of the window sash and the window frame, and the center line of the actuating link 60 is parallel to the center line of the bottom plate 10.

In the specific implementation, the bottom plate 10, the long support link 20, the short support link 30, the long link 40, the short link 50, the actuating link 60, the first rivet shaft 1, the second rivet shaft 3, the third rivet shaft 4, and the one-way hanging piece 70 are all made of stainless steel 304.

More specifically, a copper gasket 2 is provided between the long support rod 20 and the rivet seat 13, and a copper gasket 2 is provided between the short support rod 30 and the rivet seat 13.

The hinge assembly in the application is all connected by a spin riveting process of a spin riveting machine. The process comprises the following steps: the first step is as follows: the one-way hanging piece 70 is riveted with the bottom plate 10. The second step is that: the long support rod 20, the copper gasket 2 and the first rivet shaft 1 are connected with the bottom plate 10 in a spin riveting mode. The third step: the short support rod 30, the copper gasket 2 and the first rivet shaft 1 are connected with the bottom plate 10 in a riveting mode. The fourth step: the long link 40, the copper gasket 2 and the second rivet shaft 3 are connected with the long support link 20 by spin riveting. The fifth step: the short support link 30, the copper gasket 2 and the second rivet shaft 3 are connected with the long link 40 in a spin riveting mode. And a sixth step: the short link 50, the copper gasket 2 and the second rivet shaft 3 are connected with the long support link 20 by spin riveting. The seventh step: the long link 40, the copper gasket 2 and the third rivet shaft 4 are connected with the starting link 60 in a spin riveting mode. Eighth step: the short link 50, the copper gasket 2 and the third rivet shaft 4 are connected with the starting link 60 in a spin riveting mode.

And (5) sequentially riveting according to the steps, and finishing the final assembly of the application. In the present application, when the actuating link 60 is pushed to one side, all of the first rivet shaft 1, the second rivet shaft 3, and the third rivet shaft 4 are rotated at different speeds. When the actuating link 60 is pushed to 180, the application is fully open, whereas pushing is closed.

The present application subverts the hinge structures currently available on the market. The structure is simple and practical, and the process is simplified. The main process comprises the following steps: laser cutting, punching, shearing, profiling, deburring, mechanical polishing, marking, riveting, inspecting and packaging. The product structure changes the traditional production process, ensures the product quality, shortens the production period, reduces the production cost and improves the production benefit of enterprises.

The light-weight five-link 180-degree casement hinge 100 comprises a bottom plate 10 connected with a window frame, a starting link 60 connected with a window sash, a long link 40 and a short link 50 riveted with the starting link 60, a long support link 20 and a short support link 30 respectively riveted with the long link 40 and the bottom plate 10, and a long support link 20 riveted with the short link, and forms an opening and closing structure consisting of seven rivet shafts. The slider, the spout structure among the prior art have been cancelled to this application, through above-mentioned riveted structure for the thickness of long link 40, short link 50, long link 20 and short link 30 is 6mm, compares link thickness among the prior art and is 5.5mm, has increased thickness, and spare part cooperation clearance optimization, has used riveted connection structure in addition, has increased the bearing capacity of this application. All spare parts of this application are all to adopt metal material to make, even under the high temperature condition, all functions of hinge can not become invalid, make fire control safety obtain the guarantee. This application drives the casement through the rivet axle and rotates, need not to increase extra motion space for can beat the screw in bottom plate 10 department, fix bottom plate 10 and window frame, make installation firm in connection. Therefore, the application greatly improves the functions of bearing, theft prevention, fire control and installation and provides safety guarantee for the installation and use of users.

In addition, this application adopts seven rivet axle pivoted modes, compares prior art's spout, slider structure, makes the hinge open, close more easily smooth and easy.

In addition, the window is quickly installed with the window sash through the starting connecting rod 60 and is quickly installed with the window frame through the one-way hanging piece 70, so that the window is connected with the window sash and the window frame more quickly and conveniently, and the installation strength of workers is reduced.

In addition, the hinge of this application is closed the back, hides completely in the die cavity of casement and window frame, makes the window more pleasing to the eye.

In addition, by adopting the structure of the application, the processing technology can be optimized, the efficiency is improved, and the production cost is reduced.

Fig. 8 is a schematic front view of the base plate shown in fig. 1. Fig. 9 is a top view of fig. 8. Fig. 10 is a side view of fig. 8. Referring also to fig. 9-10, as shown in fig. 8, in this embodiment, the base plate 10 includes a first arm 11 and a second arm 14 in the form of a sheet. The first arm 11 is horizontal. The second arm 14 is perpendicular to the first arm 11 at one side thereof. The second arm 14 is used to connect the vertical edges of the sash. The first arm 11 is provided with two sets of rivet seats 13 protruding upwards and sunken grooves 12 in sequence from one side to the other side where the second arm 14 is arranged. Each set comprising an upwardly projecting rivet seat 13 and a recessed recess 12. Each rivet receptacle 13 serves to receive a first rivet shaft 1. Each recess 12 is adapted to receive the one-way hanging piece 70 and allow the one-way hanging piece 70 to freely rotate about its center.

Fig. 11 is a front view of the one-way hanging piece shown in fig. 1. Fig. 12 is a schematic cross-sectional view taken along line a-a in fig. 10. In this embodiment, as shown in fig. 11, referring to fig. 12, the one-way hanging piece 70 is a sheet structure with one end being an arc end 71. The one-way hanging piece 70 is provided with a boss 72 close to the circular arc end 71, and the boss 72 is provided with a hexagonal hole 73. As shown in fig. 1, the one-way hanging piece 70 is spin-riveted to the base plate 10. During installation, put into the section bar of window frame with bottom plate 10, insert the hexagonal spanner in the hexagonal hole 73 of one-way lacing film 70, through twisting the hexagonal spanner, make one-way lacing film 70 switching-over, adjust to after the suitable position, throw in the screw in hexagonal hole 73, fix this application in window frame department. So that the upper, left, lower and right connection of the base plate 10 and the window frame is achieved through the one-way hanging pieces 70.

In the present embodiment, as shown in fig. 1, the two ends and the middle of the long support rod 20 have corresponding holes for installing the second rivet shaft 3, the first rivet shaft 1 and the second rivet shaft 3. The long support link 20 is a slightly curved rod.

In the present embodiment, as shown in fig. 1, the short support rod 30 has corresponding holes at both ends for installing the second rivet shaft 3 and the first rivet shaft. The short support link 30 is a slightly curved rod.

In the present embodiment, as shown in fig. 1, the two ends and the middle of the long link 40 have corresponding holes for installing the third rivet shaft 4, the second rivet shaft 3 and the second rivet shaft 3.

In the present embodiment, as shown in fig. 1, the two ends of the short link 50 have corresponding holes for installing the third rivet shaft 4 and the second rivet shaft 3.

Fig. 5 is a schematic front view of the activation link shown in fig. 1. Fig. 6 is a top view of fig. 5. Fig. 7 is a side view of fig. 5. As shown in fig. 5, and also in fig. 6-7, the actuating link 60 includes: a horizontal bar 61 and a vertical bar 64. Two downward recesses 62 are provided in the horizontal bar 61, one rivet hole 63 being provided in each recess 62, each rivet hole 63 being provided for the passage of a corresponding rivet shaft. The vertical rod 64 is formed at one side of the horizontal rod 61, and the vertical rod 64 is formed by vertically bending one side of the horizontal rod 61 to the other side of the horizontal rod 61 and then vertically bending. The upper section of the vertical rod 64 is provided with two arms 65 with a gap 66 in the middle, the upper section of the vertical rod 64 is used for being inserted at the window sash, and the two arms 65 are pressed by a tool to be elastically clamped into the profile groove of the window sash so as to fix the starting link rod at the window sash.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. A light five-link 180 DEG flat-open hinge for being installed at a window to drive the window to open or close, the window including a window frame and a window sash, characterized in that the light five-link 180 DEG flat-open hinge is made of metal, and comprises:

the window frame comprises a bottom plate and a window frame, wherein the bottom plate is used for being installed at a window frame, and a one-way hanging piece is arranged at the bottom plate and is configured to be used for quickly installing the bottom plate at the window frame;

an actuating link for mounting at the sash for supporting, said actuating link further configured as a quick mount structure;

the short connecting rod is used for connecting the starting connecting rod and the long supporting connecting rod, one end of the short connecting rod is riveted with the starting connecting rod, and the other end of the short connecting rod is riveted with the long supporting connecting rod;

the long connecting rod is used for connecting the starting connecting rod, the long supporting connecting rod and the short supporting connecting rod, one end of the long connecting rod is riveted with the starting connecting rod, the middle of the long connecting rod is riveted with the long supporting connecting rod, and the other end of the long connecting rod is riveted with the short supporting connecting rod; and

each support rod is used for connecting the long connecting rod and the bottom plate, one end of each support rod is riveted with the long connecting rod, and the other end of each support rod is riveted with the bottom plate;

in the process of opening or closing the window sash, the window sash drives the starting link rod to rotate, drives the short link rod and the long link rod to rotate relative to the starting link rod, further drives the long support link rod and the short support link rod to rotate relative to the bottom plate, and is configured in such a way that in a fully opened state of the window sash, the short link rod, the long support link rod and the short support link rod are opened, so that the center line of the starting link rod is parallel to the center line of the bottom plate, in a fully closed state of the window sash, the starting link rod, the short link rod, the long support link rod and the short support link rod are folded at the bottom plate, and the center line of the starting link rod is parallel to the center line of the bottom plate.

2. The light-weight five-link 180 ° flat-open hinge according to claim 1, wherein the bottom plate comprises a first plate and a second plate, the first plate is horizontal, the second plate is perpendicular to one side of the first plate, the second plate is used for connecting the vertical side of the window frame, the first plate is provided with two sets of upward-protruding rivet seats and downward-protruding grooves in sequence from one side to the other side of the second plate, one set of downward-protruding rivet seat and one set of upward-protruding rivet seat is used for accommodating a rivet shaft, and the grooves are used for accommodating the one-way hanging pieces and enabling the one-way hanging pieces to freely rotate around the centers of the one-way hanging pieces.

3. The light-duty five-link 180 ° flat-open hinge according to claim 2, characterized in that said one-way hanging piece is a sheet structure with one end being a circular arc end, a boss is provided in said one-way hanging piece near the circular arc end, and a hexagonal hole is provided in said boss.

4. The light-weight five-link 180 ° flat-open hinge according to claim 1, wherein the long support link has corresponding holes at both ends and in the middle to mount corresponding rivet shafts.

5. The light-weight five-link 180 ° flat-open hinge according to claim 1, wherein the short support link has corresponding holes at both ends for mounting corresponding rivet shafts.

6. The light-weight five-link 180 ° flat-open hinge according to claim 1, wherein the long link has corresponding holes at both ends and in the middle to mount corresponding rivet shafts.

7. The light-weight five-link 180 ° flat-open hinge according to claim 1, wherein the short link has corresponding holes at both ends for mounting corresponding rivet shafts.

8. The light-weight five-link 180 ° flat-open hinge according to any of claims 1 to 7, characterized in that said actuating link comprises:

the horizontal rod is provided with two downward concave parts, each concave part is internally provided with a rivet hole, and each rivet hole is used for passing through a corresponding rivet shaft; and

the vertical rod is formed by one side of the horizontal rod being vertical, and the other side of the horizontal rod being vertically bent and then being vertically bent, the upper section of the vertical rod is provided with two arms with a notch in the middle, the upper section of the vertical rod is used for being inserted into a window sash, and the two arms are squeezed by a tool to be elastically clamped into the section groove of the window sash so as to fix the starting link rod at the window sash.

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