Diagonal draw bar capable of automatically returning

Abstract

The utility model discloses a self-return diagonal draw bar, which comprises a frame base, a first support sheet, a second support sheet, a long draw bar, a short draw bar, a transmission strip and a fixed seat, a positioning mechanism for positioning the maximum opening angle of the diagonal draw bar is arranged between the short draw bar and the fixed seat, and an elastic power-assisted mechanism is arranged between the other end of the long draw bar and the fixed seat. The elastic power-assisted mechanism comprises a sliding block and two power-assisted springs, the left side and the right side of the sliding block are each provided with one power-assisted spring, the left side and the right side of the sliding block are each fixedly provided with a first positioning column, a positioning groove is formed in the fixing base, the left side and the right side of the positioning groove are each fixedly provided with a second positioning column, and the sliding block is installed in the positioning groove in a left-right sliding mode. The two ends of each auxiliary spring are arranged on one first positioning column and one second positioning column in a sleeving mode respectively. The diagonal draw bar can automatically return when being opened or closed, time and labor are saved, operation is convenient, and the experience feeling of a user on inward tilt doors and windows or outward tilt doors and windows can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of door and window hardware system accessories, and particularly relates to an inclined pull rod capable of automatically returning to its original position. Background Art

[0002] An inclined pull rod is a common hardware fitting, which is installed at the corner of the upper end of a door or window. By matching with other hardware fittings, the linkage of the door and window hardware system is realized, so as to realize the opening of the door or window sash. The structure of a general inclined pull rod includes a frame base, two support pieces, a long pull rod, a short pull rod, a transmission bar and a fixed seat. After installation, one end of the long pull rod is slidably connected with the fixed seat through a slider. The frame base is horizontally fixed on the top of the door or window frame, the fixed seat is horizontally fixed on the top of the door or window sash, and both ends of the transmission bar are respectively connected with other hardware pieces.

[0003] The door or window sash moves synchronously with the opening and closing of the inclined pull rod. The inclined pull rod usually has only one gear and can only be opened at a designed fixed angle, which is the maximum opening angle of the inclined pull rod. When the inclined pull rod is opened, the slider at one end of the long pull rod is limited by a positioning mechanism installed on the fixed seat to realize the maximum angle opening. For example, the inclined pull rod type upper hinge of the inward opening and inward tilting window disclosed in CN221143944U includes a frame fixing plate (1), a connecting rod mechanism and a sash fixing plate (6). The sash fixing plate (6) includes a first fixing plate (10) and a second fixing plate (11) arranged along the same straight line. One side of the connecting rod mechanism is connected to the frame fixing plate (1), and the other side of the connecting rod mechanism is connected to the sash fixing plate (6) through an inclined pull rod (5). The inclined pull rod (5) can be folded and stacked on the second fixing plate (11) to be locked, and the inclined pull rod (5) can be opened and angled on the first fixing plate (10) and locked. The first fixing plate (10) is provided with a chute (12) along its length direction, and a slider (13) is installed in the chute (12). The slider (13) is rotatably connected to the inclined pull rod (5). The sash fixing plate (6) is provided with a locking post (15) at one end of the chute (12), and the slider (13) is provided with a chuck for clamping the locking post (15). When the inclined pull rod type upper hinge is opened, the sash fixing plate 6 drives the second short support plate 7 to rotate, the second short support plate 7 drives the inclined pull rod 5 to open a certain angle, and at the same time, the slider 13 slides along the chute 12, the slider 13 drives the chuck to move, and the locking post 15 is clamped into the clamping opening 17 from the opening 17 of the two clamping pieces 16, and the locking post 15 is clamped by the clamping opening 17. The whole locking process will not damage the clamping opening and is firmly locked. At this time, the window sash is suspended and opened indoors. Although the above inclined pull rod can realize the maximum angle opening, the user needs to continuously use a large force during the process of opening and closing the door or window to open and close the door or window sash in place, and this situation is more obvious after the inclined pull rod is installed and used for a period of time. Content of the Utility Model

[0004] The technical problem to be solved by the present utility model is to provide an inclined pull rod capable of automatic resetting in view of the deficiencies of the prior art. The inclined pull rod can achieve automatic resetting when opening or closing, saving time and effort, being convenient to operate, and being beneficial to enhancing the user experience of inward-opening or outward-opening doors and windows.

[0005] The technical solution adopted by the present utility model to solve the above technical problem is: an inclined pull rod capable of automatic resetting, including a frame base, a first support piece, a second support piece, a long pull rod, a short pull rod, a transmission strip and a fixed seat. One end of the first support piece is riveted to the middle of the frame base, and the other end of the first support piece is riveted to one end of the long pull rod. Both ends of the second support piece are respectively slidably connected to the frame base and the long pull rod, and the middle of the second support piece is cross-riveted to the middle of the first support piece. The transmission strip is horizontally slidably installed in the fixed seat, and an eccentric locking point is installed on the transmission strip. A locking block cooperating with the eccentric locking point is fixed on the long pull rod. One end of the short pull rod is riveted to the long pull rod, and a positioning mechanism for positioning the maximum opening angle of the inclined pull rod is arranged between the short pull rod and the fixed seat. An elastic boosting mechanism is arranged between the other end of the long pull rod and the fixed seat. The elastic boosting mechanism includes a slider and two boosting springs. One boosting spring is respectively arranged on the left side and the right side of the slider. First positioning columns are respectively fixed on the left side and the right side of the slider. Second positioning columns are fixed on the left side and the right side of the positioning groove on the fixed seat. The slider is slidably installed in the positioning groove from left to right. Both ends of each boosting spring are respectively sleeved on one first positioning column and one second positioning column. During the process of opening or closing the door or window sash, the slider moves along the positioning groove and compresses one boosting spring, and the other boosting spring applies an elastic thrust to the slider until the door or window sash is opened or closed in place.

[0006] The inclined pull rod of the present utility model is used for inward-opening or outward-opening doors and windows. The inclined pull rod of the present utility model is provided with an elastic boosting mechanism composed of a slider and two boosting springs. During the process of the user opening or closing the door or window sash, the slider moves along the positioning groove and compresses one boosting spring, and the other boosting spring applies an elastic thrust to the slider, so that the inclined pull rod can achieve automatic resetting when opening or closing, saving time and effort, being convenient to operate, and being beneficial to enhancing the user experience of inward-opening or outward-opening doors and windows.

[0007] Preferably, the positioning mechanism includes a positioning disc, steel balls, a positioning spring, and a socket head adjusting screw. The positioning disc is fixed to the other end of the short pull rod, and the positioning disc is riveted to the fixed seat. An arc-shaped positioning groove is provided on the outer edge of the positioning disc, and the arc-shaped positioning groove is used to position the steel balls when the inclined pull rod is opened at the maximum opening angle. A horizontal slot is provided on the fixed seat, and the steel balls, the positioning spring, and the socket head adjusting screw are respectively arranged in the horizontal slot. The front end of the steel ball faces the positioning disc, the rear end of the steel ball is pressed tightly by the positioning spring, the positioning spring is pressed tightly by the socket head adjusting screw, and the socket head adjusting screw is threadedly connected to the fixed seat. When the inclined pull rod is opened at the maximum opening angle, the front end of the steel ball slides into the arc-shaped positioning groove; when the inclined pull rod is closed, the front end of the steel ball slides out of the arc-shaped positioning groove. The above positioning mechanism has a simple structure. Only when the inclined pull rod is in the state of being opened at the maximum opening angle, the steel balls are positioned by the arc-shaped positioning groove to ensure the stability when the door and window sash is opened. When the inclined pull rod is not in the state of being opened at the maximum opening angle, including when the inclined pull rod is opened or closed at other opening angles, the steel balls are not in the arc-shaped positioning groove and will not hinder the opening and closing of the inclined pull rod, thereby ensuring that the user can perform corresponding opening and closing operations on the door and window sash with a smaller force under the action of the assisting spring.

[0008] Preferably, a protrusion is provided on one side of the arc-shaped positioning groove, and the protrusion protrudes radially outward from the positioning disc. The protrusion is used to prevent the steel balls from disengaging from the arc-shaped positioning groove due to the inertial effect of the door and window sash during the opening process of the inclined pull rod.

[0009] Preferably, two arc-shaped positioning grooves are provided on the outer edge of the positioning disc to take into account the installation requirements of the inclined pull rod on left-opening doors and windows and right-opening doors and windows. After the inclined pull rod is installed on a left-opening door and window or a right-opening door and window, only one arc-shaped positioning groove works. By providing two arc-shaped positioning grooves on the outer edge of the positioning disc, the versatility of the inclined pull rod can be improved, enabling the inclined pull rod to be installed on both left-opening doors and windows and right-opening doors and windows.

[0010] Preferably, an eccentric rivet is installed on the front of the frame base. One end of the first support piece is riveted to the middle of the frame base through a first rivet. The eccentric rivet is close to the first rivet. An adjusting plate is arranged on the back of the frame base. The width of the front half of the adjusting plate is smaller than that of the back half of the adjusting plate. A round hole is opened on the front half of the adjusting plate, and an irregular hole is opened on the back half of the adjusting plate. The eccentric rivet passes through the frame base and the round hole and is riveted to the adjusting plate. The first rivet passes through the irregular hole and the frame base and is riveted to one end of the first support piece. By directly installing the eccentric rivet on the frame base and rotating and adjusting the eccentric rivet, the front-back adjustment of the installation position of the door and window sash can be conveniently achieved, ensuring the sealing performance when the door and window sash is closed. When it is necessary to adjust the sealing performance of the door and window sash, rotate and adjust the eccentric rivet. The eccentric rivet drives the first support piece, the second support piece, the long pull rod, the frame base, etc. to perform synchronous position fine-tuning through the adjusting plate, so as to achieve the front-back adjustment of the installation position of the door and window sash. The operation is convenient, efficient, time-saving and labor-saving.

[0011] Preferably, a first sliding groove and a second sliding groove are respectively opened on the frame base and the long pull rod. A copper slider that can slide left and right is installed in the first sliding groove. A second rivet passes through the copper slider and the first sliding groove and is riveted to one end of the second support piece. The other end of the second support piece is riveted with a third rivet. The third rivet can slide left and right through the second sliding groove. By directly installing the eccentric rivet on the frame base and rotating and adjusting the eccentric rivet, the front-back adjustment of the installation position of the door and window sash can be conveniently achieved, ensuring the sealing performance when the door and window sash is closed. When it is necessary to adjust the sealing performance of the door and window sash, rotate and adjust the eccentric rivet. The eccentric rivet drives the first support piece, the second support piece, the long pull rod, the frame base, etc. to perform synchronous position fine-tuning through the adjusting plate, so as to achieve the front-back adjustment of the installation position of the door and window sash. The operation is convenient, efficient, time-saving and labor-saving.

[0012] Preferably, a number of locking pieces are installed on the frame base. A number of screw holes for installing a number of socket head cap screws are longitudinally opened on the fixing seat. After installation, the frame base is fixed to the top of the door and window frame through the number of locking pieces, and the fixing seat is fixed to the top of the door and window sash through the number of socket head cap screws. The installation is convenient and the operability is strong.

[0013] Preferably, a connecting member, a steering angle transmission seat and a sliding block are installed on the transmission bar. The connecting member and the steering angle transmission seat are respectively installed at two ends of the transmission bar. The sliding block is close to the steering angle transmission seat. The eccentric locking point is installed on the sliding block. The rear end of the transverse slot faces the sliding block. When adjusting the tightness of the positioning spring, after driving the sliding block to move a certain distance away from the rear end of the transverse slot through the transmission bar, the socket head cap adjusting screw can be conveniently loosened or tightened from the rear side of the transverse slot.

[0014] Compared with the prior art, the utility model has the following advantages: An elastic boosting mechanism composed of a sliding block and two boosting springs is arranged on the tilting stay of the utility model which can automatically return. During the process of a user opening or closing a window sash, the sliding block moves along the positioning slot and compresses one boosting spring, and the other boosting spring applies an elastic thrust to the sliding block, so as to realize the automatic return when the tilting stay is opened or closed, which saves time and effort, is convenient to operate, and is beneficial to improving the user experience of inward-opening or outward-opening windows. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a bottom view schematic diagram when the tilting stay in the embodiment is opened at the maximum opening angle;

[0016] Figure 2 is Figure 1 the enlarged view at A in

[0017] Figure 3 is the enlarged view at A in Figure 1 after removing the boosting spring;

[0018] Figure 4 It is a top view schematic diagram when the tilting stay in the embodiment is opened at the maximum opening angle;

[0019] Figure 5 is Figure 4 the enlarged view at B in

[0020] Figure 6 It is a partial structural exploded schematic diagram (front view) of the tilting stay in the embodiment;

[0021] The specific reference numerals in the drawings are as follows:

[0022] 1 - Frame base, 11 - Locking piece, 12 - Eccentric rivet, 13 - First rivet, 14 - Adjusting plate, 15 - Round hole, 16 - Irregular hole, 17 - First chute, 18 - Copper slider, 19 - Second rivet, 2 - First support piece, 3 - Second support piece, 31 - Third rivet, 4 - Long pull rod, 41 - Lock block, 42 - Second chute, 5 - Short pull rod, 6 - Transmission bar, 61 - Eccentric lock point, 62 - Connecting piece, 63 - Steering angle transmission seat, 64 - Sliding block, 7 - Fixed seat, 71 - Screw hole, 72 - Horizontal slot hole, 73 - Positioning groove, 74 - Second positioning post, 81 - Slider, 82 - Boosting spring, 83 - First positioning post, 9 - Positioning disc, 91 - Steel ball, 92 - Positioning spring, 93 - Cylindrical head adjusting screw, 94 - Positioning arc groove, 95 - Protrusion. Detailed implementation mode

[0023] The following further describes the present utility model in detail in conjunction with the embodiments of the attached drawings. Components or structures not defined in the present utility model adopt conventional technical means in the art.

[0024] The automatically retractable diagonal pull rod of the embodiment is as Figures 1 to 6 shown. The diagonal pull rod is a left diagonal pull rod, which includes a frame base 1, a first support piece 2, a second support piece 3, a long pull rod 4, a short pull rod 5, a transmission bar 6 and a fixed seat 7. A number of locking pieces 11 are installed on the frame base 1. A number of screw holes 71 for installing a number of cylindrical head fixing screws (not shown in the figure) are longitudinally opened on the fixed seat 7. One end of the first support piece 2 is riveted to the middle of the frame base 1, and the other end of the first support piece 2 is riveted to one end of the long pull rod 4. Both ends of the second support piece 3 are slidably connected to the frame base 1 and the long pull rod 4 respectively. The middle of the second support piece 3 is cross-riveted to the middle of the first support piece 2. The transmission bar 6 is horizontally slidably installed through the fixed seat 7. An eccentric lock point 61 is installed on the transmission bar 6. A lock block 41 cooperating with the eccentric lock point 61 is fixed on the long pull rod 4. One end of the short pull rod 5 is riveted to the long pull rod 4. A positioning mechanism for positioning the maximum opening angle of the diagonal pull rod is arranged between the short pull rod 5 and the fixed seat 7. An elastic boosting mechanism is arranged between the other end of the long pull rod 4 and the fixed seat 7. The elastic boosting mechanism includes a slider 81 and two boosting springs 82. A boosting spring 82 is arranged on the left and right sides of the slider 81 respectively. First positioning posts 83 are fixed on the left and right sides of the slider 81 respectively. A positioning groove 73 is opened on the fixed seat 7. Second positioning posts 74 are fixed on the left and right sides of the positioning groove 73 respectively. The slider 81 is slidably installed in the positioning groove 73. Both ends of each boosting spring 82 are sleeved on a first positioning post 83 and a second positioning post 74 respectively. During the process of opening or closing the window or door sash, the slider 81 moves along the positioning groove 73 and compresses one boosting spring 82, and the other boosting spring 82 applies an elastic thrust to the slider 81 until the window or door sash is opened or closed in place.

[0025] In this embodiment, the positioning mechanism includes a positioning disk 9, steel balls 91, positioning springs 92, and socket head cap adjusting screws 93. The positioning disk 9 is fixed to the other end of the short pull rod 5. The positioning disk 9 is riveted to the fixed seat 7. A positioning arc groove 94 is provided on the outer edge of the positioning disk 9. The positioning arc groove 94 is used to position the steel balls 91 when the inclined pull rod is opened at the maximum opening angle. A convex portion 95 is provided on one side of the positioning arc groove 94. The convex portion 95 protrudes radially outward of the positioning disk 9. The convex portion 95 is used to prevent the steel balls 91 from disengaging from the positioning arc groove 94 due to the inertial effect of the door or window sash during the opening process of the inclined pull rod. A transverse slot 72 is provided on the fixed seat 7. The steel balls 91, positioning springs 92, and socket head cap adjusting screws 93 are respectively arranged in the transverse slot 72. The front end of the steel ball 91 faces the positioning disk 9. The rear end of the steel ball 91 is pressed tightly by the positioning spring 92. The positioning spring 92 is pressed tightly by the socket head cap adjusting screw 93. The socket head cap adjusting screw 93 is threadedly connected to the fixed seat 7. When the inclined pull rod is opened at the maximum opening angle, the front end of the steel ball 91 slides into the positioning arc groove 94; when the inclined pull rod is closed, the front end of the steel ball 91 slides out of the positioning arc groove 94.

[0026] In this embodiment, a connecting member 62, a steering angle transmission seat 63, and a sliding block 64 are installed on the transmission bar 6. The connecting member 62 and the steering angle transmission seat 63 are respectively installed at both ends of the transmission bar 6. The sliding block 64 is close to the steering angle transmission seat 63. The eccentric locking point 61 is installed on the sliding block 64. The rear end of the transverse slot 72 faces the sliding block 64.

[0027] In this embodiment, an eccentric rivet 12 is installed on the front surface of the frame base 1. One end of the first support piece 2 is riveted to the middle of the frame base 1 through a first rivet 13. The eccentric rivet 12 is close to the first rivet 13. An adjusting plate 14 is provided on the back surface of the frame base 1. The width of the front half of the adjusting plate 14 is smaller than the width of the rear half of the adjusting plate 14. A round hole 15 is provided on the front half of the adjusting plate 14. An irregular hole 16 is provided on the rear half of the adjusting plate 14. The eccentric rivet 12 passes through the frame base 1 and the round hole 15 and is riveted to the adjusting plate 14. The first rivet 13 passes through the irregular hole 16 and the frame base 1 and is riveted to one end of the first support piece 2; first chutes 17 and second chutes 42 are respectively provided on the frame base 1 and the long pull rod 4. A copper slider 18 that can slide left and right is installed in the first chute 17. A second rivet 19 passes through the copper slider 18 and the first chute 17 and is riveted to one end of the second support piece 3. The other end of the second support piece 3 is riveted with a third rivet 31. The third rivet 31 can slide left and right through the second chute 42.

[0028] The above-mentioned inclined pull rod is used for inwardly inverted doors and windows or outwardly inverted doors and windows. In this embodiment, two positioning arc grooves 94 are shown on the outer edge of the positioning disk 9 (see specifically Figures 4 to 6), so as to take into account the installation requirements of the diagonal tie rod on the left-opening doors and windows and the right-opening doors and windows. After the diagonal tie rod is installed on the left-opening doors and windows or the right-opening doors and windows, only one positioning arc groove 94 functions. As Figure 4 and Figure 5 shown, only the positioning arc groove 94 located on the left side of the positioning disc 9 cooperates with the steel ball 91 and functions, while the positioning arc groove 94 located on the right side of the positioning disc 9 is not used.

[0029] After the above-mentioned diagonal tie rod is installed, the frame base 1 is fixed to the top of the door and window frame by a plurality of locking pieces 11, and the fixed seat 7 is fixed to the top of the door and window sash by a plurality of socket head cap screws. During the process of the user opening or closing the door and window sash, the slider 81 moves along the positioning groove 73 and compresses a boosting spring 82, and the other boosting spring 82 exerts an elastic thrust on the slider 81, so as to realize the automatic return when the diagonal tie rod is opened or closed, saving time and effort, and being convenient to operate, which is beneficial to improving the user experience of the inward-opening or outward-opening doors and windows. In addition, the positioning mechanism arranged between the short tie rod 5 and the fixed seat 7 has a simple structure. Only when the diagonal tie rod is opened at the maximum opening angle, the steel ball 91 is positioned by the positioning arc groove 94 to ensure the stability when the door and window sash is opened. When the diagonal tie rod is not opened at the maximum opening angle, including when the diagonal tie rod is opened or closed at other opening angles, the steel ball 91 is not in the positioning arc groove 94 and will not hinder the opening and closing of the diagonal tie rod, so as to ensure that the user can perform corresponding opening and closing operations on the door and window sash with a smaller force under the action of the boosting spring 82.

Claims

1. An automatically retractable diagonal tie rod, comprising a frame base, a first support piece, a second support piece, a long tie rod, a short tie rod, a transmission bar and a fixed seat. One end of the first support piece is riveted to the middle of the frame base, and the other end of the first support piece is riveted to one end of the long tie rod. Both ends of the second support piece are respectively slidably connected to the frame base and the long tie rod, and the middle of the second support piece is cross-riveted to the middle of the first support piece. The transmission bar is horizontally slidably installed in the fixed seat, an eccentric locking point is installed on the transmission bar, a locking block cooperating with the eccentric locking point is fixed on the long tie rod, one end of the short tie rod is riveted to the long tie rod, and a positioning mechanism for positioning the maximum opening angle of the diagonal tie rod is arranged between the short tie rod and the fixed seat, and it is characterized in that: An elastic boosting mechanism is provided between the other end of the long pull rod and the fixed seat. The elastic boosting mechanism includes a slider and two boosting springs. One boosting spring is provided on each of the left and right sides of the slider. First positioning posts are respectively fixed on the left and right sides of the slider. Positioning grooves are formed on the fixed seat, and second positioning posts are respectively fixed on the left and right sides of the positioning grooves. The slider is slidably mounted in the positioning grooves. The two ends of each boosting spring are respectively sleeved on one of the first positioning posts and one of the second positioning posts. During the process of opening or closing the door or window sash, the slider moves along the positioning groove and compresses one boosting spring, and the other boosting spring applies an elastic thrust to the slider until the door or window sash is opened or closed in place.

2. The automatically retractable diagonal tie rod according to claim 1, characterized in that: The positioning mechanism includes a positioning disc, steel balls, a positioning spring and a socket head adjusting screw. The positioning disc is fixed to the other end of the short pull rod. The positioning disc is riveted to the fixed seat. A positioning arc groove is provided on the outer edge of the positioning disc. The positioning arc groove is used to position the steel balls when the diagonal pull rod is opened at the maximum opening angle. A horizontal slot hole is provided on the fixed seat. The steel balls, the positioning spring and the socket head adjusting screw are respectively arranged in the horizontal slot hole. The front end of the steel ball faces the positioning disc. The rear end of the steel ball is pressed tightly by the positioning spring. The positioning spring is pressed tightly by the socket head adjusting screw. The socket head adjusting screw is threadedly connected to the fixed seat. When the diagonal pull rod is opened at the maximum opening angle, the front end of the steel ball slides into the positioning arc groove; when the diagonal pull rod is closed, the front end of the steel ball slides out of the positioning arc groove.

3. The automatically retractable diagonal tie rod according to claim 2, wherein: A raised portion is provided on one side of the positioning arc groove. The raised portion protrudes towards the radial outside of the positioning disc. The raised portion is used to prevent the steel balls from disengaging from the positioning arc groove due to the inertial effect of the door or window sash during the opening process of the diagonal pull rod.

4. A retractable diagonal tie rod according to claim 2 or 3, characterized in that: Two positioning arc grooves are provided on the outer edge of the positioning disc to take into account the installation requirements of the diagonal pull rod on left-opening doors and windows and right-opening doors and windows. After the diagonal pull rod is installed on a left-opening or right-opening door or window, only one positioning arc groove works.

5. The automatic returnable diagonal tie rod according to claim 1, characterized in that: An eccentric rivet is installed on the front surface of the frame base. One end of the first support piece is riveted to the middle of the frame base through a first rivet. The eccentric rivet is close to the first rivet. An adjusting plate is provided on the back surface of the frame base. The width of the front half section of the adjusting plate is smaller than the width of the rear half section of the adjusting plate. A round hole is provided on the front half section of the adjusting plate. An irregular hole is provided on the rear half section of the adjusting plate. The eccentric rivet passes through the frame base and the round hole and is riveted to the adjusting plate. The first rivet passes through the irregular hole and the frame base and is riveted to one end of the first support piece.

6. The automatically retractable diagonal tie rod according to claim 1, wherein: The described frame base and the described long pull rod are respectively provided with a first sliding groove and a second sliding groove. A copper slider that can slide left and right is installed in the first sliding groove. A second rivet passes through the copper slider and the first sliding groove and is riveted to one end of the second support piece. The other end of the second support piece is riveted with a third rivet, and the third rivet is slidably inserted into the second sliding groove.

7. A retractable diagonal tie rod according to claim 1, characterized in that: A number of locking pieces are installed on the described frame base. A number of screw holes for installing a number of socket head cap screws are longitudinally provided on the fixed seat. After installation, the frame base is fixed to the top of the door and window frame through the number of locking pieces, and the fixed seat is fixed to the top of the door and window sash through the number of socket head cap screws.

8. The automatically retractable diagonal tie rod according to claim 2, wherein: A connecting piece, a steering angle transmission seat and a sliding block are installed on the described transmission bar. The connecting piece and the steering angle transmission seat are respectively installed at both ends of the transmission bar. The sliding block is close to the steering angle transmission seat. The eccentric locking point is installed on the sliding block, and the rear end of the transverse slot faces the sliding block.

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