Door and window opening and closing stroke control device and stroke control method

Abstract

The invention discloses a door and window opening and closing stroke control device and a stroke control method, and relates to the technical field of stroke control devices.The door and window opening and closing stroke control device comprises a limiting mechanism used for limiting the door and window opening and closing stroke and installed on the surface of a door frame; the adjusting mechanism is mounted at the bottom of the limiting mechanism and used for adjusting the stroke of the limiting mechanism; the guide mechanism is connected with one end of the limiting mechanism; when the door leaf is opened, the door leaf moves to drive the connecting mechanism, then one end of the steel wire is pulled, and the other end of the steel wire pulls the tailstock to move in the limiting mechanism along the guide groove and compresses the reset spring. When the tailstock makes contact with the limiting block, the tailstock stops moving, further opening of the door leaf is limited, accurate control over the opening and closing stroke of the door leaf is achieved, the device is connected with the door leaf through the steel wire, the device is suitable for inward-opening and outward-opening door leaves and can also be compatible with sliding doors and windows, the application range of the device is widened, and the universality of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stroke control devices, and in particular to a door and window opening and closing stroke control device and a stroke control method. Background Art

[0002] Doors and windows are integral components of a building. Controlling their opening and closing travel is crucial for ensuring proper operation, improving safety, optimizing the user experience, and extending their service life. Proper opening and closing travel limits can prevent damage from over-opening or collisions with obstacles, meeting the needs of various scenarios.

[0003] After searching, the Chinese patent publication number CN221973299U discloses a pneumatic damping automatic door closer, including a door closer body, a first connecting rod, a fixed block, a connecting piece, a second connecting rod, a mounting seat and a mounting mechanism. Through the above technical solution, the problems of low replacement efficiency and poor installation stability of the pneumatic damping automatic door closer in the related art are solved. However, most of the common door and window opening and closing stroke control devices in the existing technology can only limit the stroke of door leaves that open in one direction, for example, they are only applicable to inward-opening doors or outward-opening doors, and cannot adapt to inward-opening and outward-opening door leaves at the same time.

[0004] This single-direction stroke control method has significant limitations. For doors that can open both inward and outward simultaneously, existing stroke control devices cannot effectively limit their position. The lack of effective stroke control during the inward or outward opening process can cause the door to over-open, or even collide with other objects, causing damage or safety hazards. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a door and window opening and closing stroke control device and stroke control method, which solves the problem in the background art that the prior art device cannot adapt to both inward-opening and outward-opening door leaves.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a door and window opening and closing stroke control device and stroke control method, comprising: The limiting mechanism is used to limit the opening and closing stroke of doors and windows and is installed on the surface of the door frame; An adjusting mechanism, installed at the bottom of the limiting mechanism, for adjusting the stroke of the limiting mechanism; A guide mechanism connected to one end of the limiting mechanism; A steel wire, one end of which is connected to the interior of the limiting mechanism, and a surface of the steel wire is in sliding contact with the guide mechanism and is guided by the guide mechanism; The connecting mechanism is connected to the other end of the steel wire and is installed on the top of the door leaf.

[0007] Preferably, the limiting mechanism includes a shell, a cavity is provided inside the shell, a return spring is provided inside the cavity of the shell, the shell is fixed to the surface of the door frame by installing bolts, a tail seat is provided at one end of the return spring, the tail seat is in sliding contact with the internal cavity of the shell, a connecting block is provided at the bottom of the tail seat, the connecting block is in sliding contact with the guide groove, the guide groove is opened at the bottom of the shell, and a rack is provided on the bottom surface of the shell; the limiting mechanism realizes the precise limiting and automatic resetting function of the opening and closing stroke of doors and windows through the sliding cooperation of the return spring and the tail seat in the shell, and the rack structure at the bottom, which effectively solves the problem that the existing device cannot adapt to both inward-opening and outward-opening door leaves at the same time.

[0008] Preferably, a positioning groove is provided on one side of the tailstock, and the positioning groove is threadedly connected to one end of the positioning pin, and the positioning pin is slidably connected to the strip-shaped slide groove on the surface of the shell. A limiting hole is provided at one end of the shell, and the position of the tailstock can be fixed by tightening the positioning pin, so that the connecting pin at one end of the steel wire can pass through the limiting hole, and the connecting pin can be removed from the inside of the tailstock by rotating the connecting pin.

[0009] Preferably, the adjusting mechanism includes a limit block, which is slidably connected to the inside of the guide groove, and the bottom of the limit block is connected to the limit rod, one end of the bottom of the limit rod is provided with a protruding structure, and protruding ridge structures are provided on both sides of the limit rod. The outer wall of the limit rod is in sliding contact with the inside of the card block, and a first spring is provided at the bottom of the card block, and the first spring is mounted on the outside of the limit rod. A toothed structure is provided on the surface of the card block, and the card block is engaged with the rack; the adjusting mechanism realizes flexible adjustment and precise positioning of the tailstock moving stroke through the sliding cooperation between the limit block and the guide groove, and the card block is engaged with the rack, under the action of the first spring, so that the opening and closing stroke of doors and windows can be quickly adjusted according to actual needs, thereby improving the applicability and flexibility of the device.

[0010] Preferably, the guide mechanism includes a connecting frame, the connecting frame is installed at one end of the shell by a screw, one end of the connecting frame is in sliding contact with the outer wall of the sliding rod, one end of the top of the sliding rod is provided with a convex structure, and one end of the bottom of the sliding rod is externally sleeved with a second spring, the bottom of the sliding rod is connected to the lifting seat, the surface of the lifting seat is provided with a first guide wheel, the surface of the first guide wheel is in sliding contact with the steel wire, the interior of the lifting seat is rotatably connected to the rotating seat through a bearing, and second guide wheels are symmetrically installed at both ends of the bottom of the rotating seat, and the bottom of the second guide wheel is flush with the top of the door leaf; a guide mechanism is provided at one end of the device, so that the steel wire can always be in contact with the second guide wheel when the door leaf is opened inward or outward, and under the action of the second guide wheel, the steel wire rope can reduce contact with the door frame, thereby reducing wear of the steel wire rope.

[0011] Preferably, a connecting pin is fixedly installed at one end of the steel wire, and the connecting pin is connected to the internal thread of the tailstock, and a fixing pin is fixedly installed at the other end of the steel wire; by arranging a connecting pin at one end of the steel wire to be connected to the internal thread of the tailstock, and arranging a fixing pin at the other end, a stable connection between the steel wire and the limiting mechanism and the connecting mechanism is achieved, ensuring that the steel wire can stably transmit force during the opening and closing process of the door leaf, and at the same time facilitating the installation and replacement of the steel wire, further improving the reliability and maintenance convenience of the device.

[0012] Preferably, the connecting mechanism includes a card slot, the bottom of the card slot is engaged with the fixing pin, and a groove is provided on one side of the card slot for inserting the steel wire. The connecting mechanism realizes a firm connection between the steel wire and the door leaf through the engagement connection between the card slot and the fixing pin, as well as the groove design on one side of the card slot, while facilitating the insertion and fixation of the steel wire.

[0013] Preferably, the bottom of one end of the slot is connected to the tops of two damping rods, one end of the bottom of the damping rod is connected to the mounting seat, and the mounting seat is installed on the surface of the door leaf by bolts. The two sides of one end of the bottom of the slot are sloped, and one end of the top of the slot protrudes from the top of the door leaf. The bottom of the slot is connected to the mounting seat through the damping rod and is fixed to the surface of the door leaf by the mounting seat. At the same time, the sloped structure of the bottom of the slot and the protruding design of the top enable the door leaf to be slowly closed through the buffering effect of the damping rod when closing, avoiding the risk of pinching hands. At the same time, it plays a limiting and buffering role when the door leaf is closed quickly, effectively improving the safety of the device.

[0014] Preferably, the steps are as follows: Install the limiting mechanism: fix the limiting mechanism to the surface of the door frame. The limiting mechanism includes a housing, a return spring, a tailstock and a rack. The tailstock slides along the inside of the housing under the action of the return spring. Adjusting the stroke: The moving stroke of the tailstock is adjusted by the adjusting mechanism, which includes a limit block, a limit rod, a clamping block and a first spring. The clamping block is separated from the rack by operating the limit block. After the limit block is moved to the desired position, the clamping block is released, and the clamping block is re-engaged with the rack under the action of the first spring, thereby determining the moving stroke of the tailstock; Guiding and connection: One end of the steel wire is connected to the tailstock, and the other end is guided and fixed to the connecting mechanism at the top of the door leaf through a guide mechanism. The guide mechanism includes a first guide wheel and a second guide wheel. The steel wire slides along the guide wheels during the opening and closing process of the door leaf. Control the opening and closing of the door leaf: When the door leaf is opened, the steel wire is pulled to move the tailstock along the guide groove and compress the reset spring. When the tailstock contacts the limit block, it stops moving, limiting the opening and closing stroke of the door leaf; when the door leaf is closed, the tailstock automatically resets under the action of the reset spring, driving the steel wire to pull the door leaf closed.

[0015] The present invention provides a door and window opening and closing stroke control device and stroke control method. It has the following beneficial effects: During use, the door and window opening and closing stroke control device and its stroke control method are implemented by fixing the limiting mechanism to the top of the door frame, ensuring that the bottom of the second guide wheel is lower than the height of the door leaf, and installing the connecting mechanism to the top of the door leaf. When the door leaf is opened, the movement of the door leaf drives the connecting mechanism, which in turn pulls one end of the steel wire, and the other end of the steel wire pulls the tailstock to move along the guide groove inside the limiting mechanism and compresses the reset spring. When the tailstock contacts the limiting block, the tailstock stops moving, thereby limiting the further opening of the door leaf and achieving precise control of the door leaf's opening and closing stroke. Under the action of the elastic restoring force of the reset spring, the tailstock can automatically reset, driving the steel wire to pull the door leaf closed, thereby achieving the automatic closing function of the door leaf. Through the connection method between the steel wire and the door leaf, the device is not only suitable for inward-opening and outward-opening door leaves, but is also compatible with sliding doors and windows, thereby improving the scope of application and versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional front view structure of the present invention; Figure 4 This is a schematic diagram of the installation structure of the present invention; Figure 5 It is a schematic diagram of the front view structure of the present invention; Figure 6 It is a schematic diagram of the top view of the structure of the present invention; Figure 7 This is a schematic diagram of the card block structure of the present invention; Figure 8 This is a schematic structural diagram of the guide mechanism of the present invention; Figure 9 It is a schematic diagram of the connecting mechanism structure of the present invention.

[0017] In the figure, 1. limiting mechanism; 101. housing; 102. return spring; 103. mounting bolt; 104. tailstock; 105. positioning groove; 106. connecting block; 107. guide groove; 108. limiting hole; 109. positioning pin; 110. rack; 2. adjusting mechanism; 201. limiting block; 202. limiting rod; 203. clamping block; 204. first spring; 3. guiding mechanism; 301. connecting frame; 302. sliding rod; 303. second spring; 304. lifting seat; 305. first guide wheel; 306. rotating seat; 307. second guide wheel; 4. steel wire; 401. connecting pin; 402. fixing pin; 5. connecting mechanism; 501. clamping groove; 502. damping rod; 503. mounting seat. DETAILED DESCRIPTION

[0018] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1-9 The embodiment of the present invention provides a technical solution: a door and window opening and closing stroke control device, comprising: Limiting mechanism 1, used to limit the opening and closing stroke of doors and windows, installed on the surface of the door frame; The adjusting mechanism 2 is installed at the bottom of the limiting mechanism 1 and is used to adjust the stroke of the limiting mechanism 1; The guide mechanism 3 is connected to one end of the limiting mechanism 1; A steel wire 4, one end of which is connected to the interior of the limiting mechanism 1, and a surface of the steel wire 4 is in sliding contact with the guide mechanism 3 and is guided by the guide mechanism 3; The connecting mechanism 5 is connected to the other end of the steel wire 4 and is installed on the top of the door leaf; This door and window opening and closing stroke control device and stroke control method, through the coordinated action of a limit mechanism 1, an adjustment mechanism 2, a guide mechanism 3, a steel wire 4, and a connecting mechanism 5, can effectively solve the problem that existing devices cannot adapt to both inward-opening and outward-opening door leaves. The limit mechanism 1 is installed on the surface of the door frame and can accurately limit the opening and closing stroke of the door and window, preventing the door and window from over-opening or colliding with obstacles. The adjustment mechanism 2 can flexibly adjust the limit stroke according to actual needs to meet the requirements of use in different scenarios. This makes the device applicable to both inward-opening and outward-opening door leaves, greatly improving the scope of application of the device.

[0020] Example 2: Please refer to Figure 1-9, the embodiment of the present invention provides a technical solution: a door and window opening and closing stroke control device, a limiting mechanism 1 includes a shell 101, a cavity is provided inside the shell 101, a return spring 102 is provided inside the cavity of the shell 101, the shell 101 is fixed to the surface of the door frame by installing bolts 103, a tailstock 104 is provided at one end of the return spring 102, the tailstock 104 is in sliding contact with the internal cavity of the shell 101, a connecting block 106 is provided at the bottom of the tailstock 104, the connecting block 106 is in sliding contact with the guide groove 107, the guide groove 107 is opened at the bottom of the shell 101, and a rack 110 is provided on the bottom surface of the shell 101; the adjustment mechanism 2 includes a limiting block 201, the limiting block 201 is slidably connected to the inside of the guide groove 107, the bottom of the limiting block 201 is connected to the limiting rod 202, one end of the bottom of the limiting rod 202 is provided with a protruding structure, and protruding prismatic structures are provided on both sides of the limiting rod 20 2 outer wall is in sliding contact with the inside of the block 203, a first spring 204 is provided at the bottom of the block 203, the first spring 204 is sleeved on the outside of the limit rod 202, a toothed structure is provided on the surface of the block 203, and the block 203 is engaged and connected with the rack 110; the guide mechanism 3 includes a connecting frame 301, the connecting frame 301 is installed at one end of the shell 101 by screws, one end of the connecting frame 301 is in sliding contact with the outer wall of the sliding rod 302, a protruding structure is provided at the top end of the sliding rod 302, a second spring 303 is sleeved on the outside of the bottom end of the sliding rod 302, the bottom of the sliding rod 302 is connected to the lifting seat 304, a first guide wheel 305 is installed on the surface of the lifting seat 304, the surface of the first guide wheel 305 is in sliding contact with the steel wire 4, the interior of the lifting seat 304 is rotatably connected to the rotating seat 306 through a bearing, and second guide wheels 307 are symmetrically installed at both ends of the bottom of the rotating seat 306, and the bottom of the second guide wheel 307 is flush with the top of the door leaf; When the device of this embodiment is in use, the limiting mechanism 1 is installed at one end of the top of the door frame, and the bottom of the second guide wheel 307 is lower than the height of the door leaf. By installing the connecting mechanism 5 at one end of the top of the door leaf, when the door leaf is opened, one end of the steel wire 4 is pulled, and then the other end of the steel wire 4 drives the tailstock 104 to move and compress the return spring 102. When the tailstock 104 contacts the limiting block 201, it stops moving, and the door leaf cannot continue to open, thereby limiting the opening and closing stroke of the door leaf and achieving the effect of stroke control. Under the push of the return spring 102, the tailstock 104 can automatically reset, so that The device can automatically close the door leaf. The device is connected to the door leaf through the steel wire 4 and is applicable to the door leaf that can be opened inward and outward at the same time, which greatly improves the scope of application. By pulling the block 203 downward, the block 203 can be separated from the engagement with the rack 110, and then the position of the block 203 can be adjusted, so that the limit block 201 can slide inside the guide groove 107. When the block 203 is released, the block 203 can be re-engaged with the rack 110 under the action of the first spring 204, and then the moving stroke of the tail stock 104 can be adjusted, and then the opening and closing stroke of the doors and windows can be adjusted.

[0021] Example 3: Please refer to Figure 1-9 , the embodiment of the present invention provides a technical solution: a door and window opening and closing stroke control device, a positioning groove 105 is provided on one side of the tailstock 104, and the positioning groove 105 is threadedly connected to one end of the positioning pin 109, the positioning pin 109 is slidably connected to the strip-shaped slide groove on the surface of the shell 101, and a limiting hole 108 is provided at one end of the shell 101; one end of the steel wire 4 is fixedly installed with a connecting pin 401, the connecting pin 401 is threadedly connected to the internal thread of the tailstock 104, and the other end of the steel wire 4 is fixedly installed with a fixing pin 402; the connecting mechanism 5 includes a slot 501, the bottom of the slot 501 is snap-connected with the fixing pin 402, and a groove is provided on one side of the slot 501 for inserting the steel wire 4; the bottom of one end of the slot 501 is connected to the top of two damping rods 502, and one end of the bottom of the damping rod 502 is connected to the mounting seat 503, and the mounting seat 503 is mounted on the surface of the door leaf by bolts, and the two sides of one end of the bottom of the slot 501 are sloped structures, and the top end of the slot 501 protrudes from the top of the door leaf; In this embodiment, when the door leaf is opened inward, the top of the card slot 501 will contact one end of the top of the door frame when closing. When the door leaf is closed too quickly, the card slot 501 will limit the door leaf from closing, thereby avoiding injury caused by pinching the hand. As the door leaf slowly closes, the damping rod 502 will contract downward, thereby driving the card slot 501 to contract downward, so that the door leaf can be slowly closed, which is beneficial to improving the safety of the device when in use. When the steel wire 4 needs to be replaced, the door is opened, so that the tailstock 104 can be moved to one end of the shell 101, and the tailstock 104 can be tightened to position it. Pin 109, thereby fixing the position of the tailstock 104, so that the connecting pin 401 at one end of the steel wire 4 can pass through the limiting hole 108, and by rotating the connecting pin 401, the connecting pin 401 can be removed from the inside of the tailstock 104, so that one end of the steel wire 4 can be removed, and then one end of the steel wire 4 can be pulled out from the inside of the guide mechanism 3, and the fixing pin 402 at the other end of the steel wire 4 can fall from the bottom of the slot 501 under the action of gravity, so that the steel wire 4 can be quickly disassembled and replaced, thereby improving the convenience of maintenance of the device.

[0022] A method for controlling the opening and closing stroke of doors and windows, comprising the following steps: Install the limiting mechanism 1: Fix the limiting mechanism 1 to the surface of the door frame. The limiting mechanism 1 includes a housing 101, a return spring 102, a tailstock 104, and a rack 110. The tailstock 104 slides along the inside of the housing 101 under the action of the return spring 102; Adjusting the stroke: The moving stroke of the tailstock 104 is adjusted by the adjusting mechanism 2, which includes a limit block 201, a limit rod 202, a clamping block 203, and a first spring 204. The clamping block 203 is separated from the rack 110 by operating the limit block 201. After the limit block 201 is moved to the desired position, the clamping block 203 is released, and the clamping block 203 is re-engaged with the rack 110 under the action of the first spring 204, thereby determining the moving stroke of the tailstock 104. Guiding and connection: One end of the steel wire 4 is connected to the tailstock 104, and the other end is guided and fixed to the connecting mechanism 5 at the top of the door leaf through the guide mechanism 3. The guide mechanism 3 includes a first guide wheel 305 and a second guide wheel 307. The steel wire 4 slides along the guide wheels during the opening and closing process of the door leaf. Control the opening and closing of the door leaf: When the door leaf is opened, the steel wire 4 is pulled to move the tailstock 104 along the guide groove 107 and compress the return spring 102. When the tailstock 104 contacts the limit block 201, it stops moving, limiting the opening and closing stroke of the door leaf; when the door leaf is closed, the tailstock 104 automatically resets under the action of the return spring 102, driving the steel wire 4 to pull the door leaf closed.

[0023] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A door and window opening and closing stroke control device and stroke control method, characterized in that: include: A limiting mechanism (1), used for limiting the opening and closing stroke of doors and windows, and installed on the surface of the door frame; An adjusting mechanism (2) is mounted on the bottom of the limiting mechanism (1) and is used to adjust the stroke of the limiting mechanism (1); A guide mechanism (3) connected to one end of the limiting mechanism (1); A steel wire (4), one end of which is connected to the interior of the limiting mechanism (1), and a surface of the steel wire (4) is in sliding contact with the guide mechanism (3) and is guided by the guide mechanism (3); The connecting mechanism (5) is connected to the other end of the steel wire (4) and is installed on the top of the door leaf.

2. A door and window opening and closing stroke control device according to claim 1, characterized in that: The limiting mechanism (1) includes a shell (101), a cavity is provided inside the shell (101), a return spring (102) is provided inside the cavity of the shell (101), the shell (101) is fixed to the surface of the door frame by installing bolts (103), a tailstock (104) is provided at one end of the return spring (102), the tailstock (104) is in sliding contact with the internal cavity of the shell (101), a connecting block (106) is provided at the bottom of the tailstock (104), the connecting block (106) is in sliding contact with a guide groove (107), the guide groove (107) is opened at the bottom of the shell (101), and a rack (110) is provided on the bottom surface of the shell (101).

3. A door and window opening and closing stroke control device according to claim 2, characterized in that: A positioning groove (105) is provided on one side of the tailstock (104), and the positioning groove (105) is threadedly connected to one end of a positioning pin (109), and the positioning pin (109) is slidably connected to a strip-shaped sliding groove on the surface of the housing (101), and a limiting hole (108) is provided at one end of the housing (101).

4. A door and window opening and closing stroke control device according to claim 3, characterized in that: The regulating mechanism (2) comprises a limit block (201), the limit block (201) is slidably connected to the inside of the guide groove (107), the bottom of the limit block (201) is connected to the limit rod (202), one end of the bottom of the limit rod (202) is provided with a protruding structure, and both sides of the limit rod (202) are provided with protruding ridge structures. The outer wall of the limit rod (202) is in sliding contact with the inside of the clamping block (203), the bottom of the clamping block (203) is provided with a first spring (204), the first spring (204) is sleeved on the outside of the limit rod (202), a tooth structure is provided on the surface of the clamping block (203), and the clamping block (203) is engaged and connected with the rack (110).

5. A door and window opening and closing stroke control device according to claim 4, characterized in that: The guide mechanism (3) includes a connecting frame (301), the connecting frame (301) is mounted on one end of the housing (101) by screws, one end of the connecting frame (301) is in sliding contact with the outer wall of the slide rod (302), the top end of the slide rod (302) is provided with a protruding structure, the bottom end of the slide rod (302) is externally sleeved with a second spring (303), the bottom of the slide rod (302) is connected to the lifting seat (304), the surface of the lifting seat (304) is mounted with a first guide wheel (305), the surface of the first guide wheel (305) is in sliding contact with the steel wire (4), the interior of the lifting seat (304) is rotatably connected to the rotating seat (306) through a bearing, and second guide wheels (307) are symmetrically mounted at both ends of the bottom of the rotating seat (306), and the bottom of the second guide wheel (307) is flush with the top of the door leaf.

6. The door and window opening and closing stroke control device according to claim 5, characterized in that: A connecting pin (401) is fixedly mounted on one end of the steel wire (4), the connecting pin (401) being threadedly connected to the interior of the tailstock (104), and a fixing pin (402) is fixedly mounted on the other end of the steel wire (4).

7. A door and window opening and closing stroke control device according to claim 6, characterized in that: The connecting mechanism (5) comprises a slot (501), the bottom of the slot (501) is engaged with the fixing pin (402), and one side of the slot (501) is provided with a groove for inserting the steel wire (4).

8. The door and window opening and closing stroke control device according to claim 7, characterized in that: The bottom of one end of the slot (501) is connected to the tops of two damping rods (502), and one end of the bottom of the damping rod (502) is connected to the mounting seat (503). The mounting seat (503) is mounted on the surface of the door leaf by bolts. Both sides of one end of the bottom of the slot (501) are sloped structures, and one end of the top of the slot (501) protrudes from the top of the door leaf.

9. A door and window opening and closing stroke control method according to claim 8, characterized in that: The steps are as follows: Installing the limiting mechanism (1): fixing the limiting mechanism (1) to the surface of the door frame, and the tailstock (104) slides along the inside of the housing (101) under the action of the return spring (102); Adjusting the travel: adjusting the travel of the tailstock (104) by means of the adjusting mechanism (2), thereby determining the travel of the tailstock (104); Guiding and connecting: one end of the steel wire (4) is connected to the tailstock (104), and the other end is guided and fixed to the connecting mechanism (5) at the top of the door leaf through the guide mechanism (3). The steel wire (4) slides along the guide wheel during the opening and closing process of the door leaf; Control the opening and closing of the door leaf: when the door leaf is opened, the steel wire (4) is pulled, and when the tailstock (104) contacts the limit block (201), the movement stops, thereby limiting the opening and closing stroke of the door leaf.

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