Door and window opening sash closing buffer structure

Abstract

The utility model discloses a door and window opening sash closing buffering structure, relates to the technical field of door and window assemblies, and solves the problems that in the long-time opening and closing process of a door and window, the door and window generally deform, the door and window sash and a door and window frame are not tightly closed, and the sealing performance of the door and window is greatly affected. Comprising a buffer shell, a buffer, a cantilever and a cantilever shifting rod, a strip-shaped limiting hole is formed in the buffer shell, the buffer comprises an N-pole magnet and an S-pole magnet, the cantilever comprises a gear mounting tenon, a gear and an external cantilever, and in the closing process of a door and window sash, the cantilever shifting rod pushes the end, extending out of the strip-shaped limiting hole, of the external cantilever; the end, located in the buffer shell, of the external cantilever drives the two gears to rotate, then the S-pole magnet is driven to slide along the inner wall of the front side of the buffer shell, the N-pole magnet and the S-pole magnet are staggered, and the door and window opening sash closing buffering function is achieved under the magnetic attraction action of the N-pole magnet and the S-pole magnet.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window components, in particular to a closing buffer structure for a door and window opening sash. Background Art

[0002] During the long-term opening and closing process of doors and windows, multiple collisions will occur between the door and window sash and the door and window frame, usually causing the doors and windows to deform, resulting in poor closure between the door and window sash and the door and window frame, greatly affecting the sealing performance of the doors and windows. Based on this, workers usually install an integrated wind brace structure or a door closer structure between the door and window frame and the door and window sash. When using the integrated wind brace structure, the window sash can be opened at a certain angle according to the use requirements and limited, preventing the window sash from swinging randomly under the action of wind. However, it has the problems of fixed opening angle and small opening range, restricting the opening angle of the doors and windows. When using the door closer structure, it is used to automatically close the door, keep the door open for a short interval, and control the opening / closing speed to assist in passing through the doorway and help ensure that the door will not inadvertently remain open. However, it has the problem that the doors and windows cannot remain in the open state. Summary of the Utility Model

[0003] Aiming at the problem that during the long-term opening and closing process of doors and windows, the doors and windows usually deform, resulting in poor closure between the door and window sash and the door and window frame, greatly affecting the sealing performance of the doors and windows, the purpose of the utility model is to provide a closing buffer structure for a door and window opening sash.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A closing buffer structure for a door and window opening sash, which includes: a buffer housing 1, a buffer 2, a cantilever 3, and a cantilever lever 4. The cantilever lever 4 is installed on the door and window sash, the buffer housing 1 is installed on the door and window frame, and a strip-shaped limit hole is provided on the buffer housing 1. The buffer 2 includes: an N-pole magnet 21 and an S-pole magnet 22. Both the N-pole magnet 21 and the S-pole magnet 22 are arranged inside the buffer housing 1, and the N-pole magnet 21 and the S-pole magnet 22 are magnetically connected. One end of the cantilever 3 is in transmission connection with the buffer 2, and the other end of the cantilever 3 extends out through the strip-shaped limit hole. During the closing process of the door and window sash, the cantilever lever 4 pushes the cantilever 3 to rotate around the end located inside the buffer housing 1, and then pushes the N-pole magnet 21 and the S-pole magnet 22 to be misaligned and separated.

[0006] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the buffer housing 1 includes: a cantilever limit 11 and a rack limit 12 inside the housing. The cantilever limit 11 is a hollow housing. Strip-shaped limit holes are formed on the front side wall and the left side wall of the cantilever limit 11 and are communicated with each other. Two rack limits 12 inside the housing are connected to both the front inner wall and the rear inner wall of the cantilever limit 11. One rack limit 12 on the front inner wall of the cantilever limit 11 is arranged close to the top inner wall of the cantilever limit 11, and the other rack limit 12 on the front inner wall of the cantilever limit 11 is arranged close to the bottom inner wall of the cantilever limit 11. One rack limit 12 on the rear inner wall of the cantilever limit 11 is arranged close to the top inner wall of the cantilever limit 11, and the other rack limit 12 on the rear inner wall of the cantilever limit 11 is arranged close to the bottom inner wall of the cantilever limit 11.

[0007] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the four rack limits 12 inside the housing are parallel to each other.

[0008] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the cantilever limit 11 is a hollow rectangular parallelepiped housing.

[0009] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the buffer 2 further includes: a rack 24. The N-pole magnet 21 and the S-pole magnet 22 are both arranged at the right end inside the cantilever limit 11. The N-pole magnet 21 is slidably connected to the rear inner wall of the buffer housing 1, and the S-pole magnet 22 is slidably connected to the front inner wall of the buffer housing 1. Two parallel racks 24 are connected to the left end face of the N-pole magnet 21, and two parallel racks 24 are connected to the left end face of the S-pole magnet 22.

[0010] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the four racks 24 are parallel to each other. One rack 24 on the N-pole magnet 21 is located above the strip-shaped limit hole, and the other rack 24 on the N-pole magnet 21 is located below the strip-shaped limit hole. One rack 24 on the S-pole magnet 22 is located above the strip-shaped limit hole, and the other rack 24 on the S-pole magnet 22 is located below the strip-shaped limit hole. The tooth profile structure of each rack 24 on the N-pole magnet 21 faces forward, and the tooth profile structure of each rack 24 on the S-pole magnet 22 faces backward.

[0011] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the cantilever 3 includes: a gear mounting tenon 31, a gear 32 and an external cantilever 33. On the upper and lower sides of one end of the external cantilever 33, there are connected gear mounting tenons 31 respectively. Each gear mounting tenon 31 is provided with a gear 32. The gear 32 located on the upper side of the external cantilever 33 meshes with the tooth-shaped structure of the rack 24 located on the N-pole magnet 21 and on the upper side of the strip-shaped limiting hole. The gear 32 located on the upper side of the external cantilever 33 meshes with the tooth-shaped structure of the rack 24 located on the S-pole magnet 22 and on the upper side of the strip-shaped limiting hole. The gear 32 located on the lower side of the external cantilever 33 meshes with the tooth-shaped structure of the rack 24 located on the N-pole magnet 21 and on the lower side of the strip-shaped limiting hole. The gear 32 located on the lower side of the external cantilever 33 meshes with the tooth-shaped structure of the rack 24 located on the S-pole magnet 22 and on the lower side of the strip-shaped limiting hole.

[0012] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the buffer 2 further includes: a rack limit 23. The rear side of each rack 24 located on the N-pole magnet 21 is connected to a rack limit 23, and the front side of each rack 24 located on the S-pole magnet 22 is connected to a rack limit 23. Each rack limit 23 matches with a rack limit 12 inside the housing.

[0013] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein there is a gap for the external cantilever 33 to pass through between the two racks 24 located on the N-pole magnet 21.

[0014] The above-mentioned buffer structure for closing the opening and closing fan of doors and windows, wherein the cantilever toggle 4 includes: a one-way locking tongue 41, a compression spring 42 and a cantilever toggle housing 43. The cantilever toggle housing 43 is installed on the door and window fan. The one-way locking tongue 41 is movably installed inside the cantilever toggle housing 43. The compression spring 42 is installed inside the one-way locking tongue 41. One end of the compression spring 42 abuts against the door and window fan, and the other end of the compression spring 42 abuts against the one-way locking tongue 41.

[0015] Due to the adoption of the above technology, the positive effects of the present utility model compared with the prior art are as follows:

[0016] (1) In the present utility model, during the closing process of the door and window opening and closing fan, by pushing the external cantilever to rotate, the N-pole magnet and the S-pole magnet are misaligned and separated. Due to the interaction of forces, it plays a buffering role in the closing process of the door and window fan. During the complete closing process of the door and window fan, the external cantilever pushes the one-way locking tongue to displace towards the inside of the cantilever toggle housing, the compression spring is compressed until the one-way locking tongue completely moves to the other side of the external cantilever, the force in the compression spring is released, the one-way locking tongue is ejected, and the door and window fan is completely closed.

[0017] (2) In the present utility model, during the opening process of the door or window sash, the one-way locking tongue pushes the external cantilever to rotate, realizing the reset of the external cantilever, ensuring that during the next closing process of the door or window sash, the closing buffer structure of the door or window opening sash can buffer the closing process of the door or window sash. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is an embodiment diagram of the closing buffer structure of the door or window opening sash of the present utility model at the buffer restoration limit position during the opening process of the door or window sash.

[0019] Figure 2 is Figure 1 the internal structural view of the buffer housing.

[0020] Figure 3 FIG. is an assembly schematic diagram of the side of the door or window frame of the closing buffer structure of the door or window opening sash of the present utility model.

[0021] Figure 4 FIG. is an assembly schematic diagram of the side of the door or window sash of the closing buffer structure of the door or window opening sash of the present utility model.

[0022] Figure 5 FIG. is an embodiment diagram of the closing buffer structure of the door or window opening sash of the present utility model in the open state of the door or window sash.

[0023] Figure 6 is Figure 5 the internal structural view of the buffer housing.

[0024] Figure 7 FIG. is an embodiment diagram of the closing buffer structure of the door or window opening sash of the present utility model at the buffer limit position during the closing process of the door or window sash.

[0025] Figure 8 is Figure 7 the internal structural view of the buffer housing.

[0026] Figure 9 FIG. is an embodiment diagram of the closing buffer structure of the door or window opening sash of the present utility model in the closed state of the door or window sash.

[0027] Figure 10 is Figure 9 the internal structural view of the buffer housing.

[0028] In the drawings: 1. Buffer housing; 2. Buffer; 3. Cantilever; 4. Cantilever lever; 11. Cantilever limit; 12. Rack limit inside the housing; 21. N-pole magnet; 22. S-pole magnet; 23. Rack limit; 24. Rack; 31. Gear installation tenon; 32. Gear; 33. External cantilever; 41. One-way locking tongue; 42. Compression spring; 43. Cantilever lever housing. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0030] Please refer to Figures 1 to 10 As shown, a door and window opening and closing buffer structure is shown, which includes: a buffer shell 1, a buffer 2, a cantilever 3 and a cantilever lever 4, the cantilever lever 4 is installed on the door and window sash, the buffer shell 1 is installed on the door and window frame, the buffer shell 1 is provided with a strip-shaped limiting hole, the buffer 2 includes: an N-pole magnet 21 and an S-pole magnet 22, the N-pole magnet 21 and the S-pole magnet 22 are both arranged in the buffer shell 1, the N-pole magnet 21 and the S-pole magnet 22 are magnetically connected, one end of the cantilever 3 is transmission-connected to the buffer 2, and the other end of the cantilever 3 extends out from the strip-shaped limiting hole, and during the closing process of the door and window sash, the cantilever lever 4 pushes the cantilever 3 to rotate around one end located in the buffer shell 1, thereby pushing the N-pole magnet 21 and the S-pole magnet 22 to be dislocated and separated.

[0031] Further, in a preferred embodiment, the buffer housing 1 includes: a cantilever limiter 11 and a rack limiter 12 in the housing, the cantilever limiter 11 is a hollow shell, and the front side wall and the left side wall of the cantilever limiter 11 are provided with interconnected strip-shaped limiter holes, and the front inner wall and the rear inner wall of the cantilever limiter 11 are both connected with two rack limiters 12 in the housing, one rack limiter 12 in the housing located on the front inner wall of the cantilever limiter 11 is arranged close to the top inner wall of the cantilever limiter 11, another rack limiter 12 in the housing located on the front inner wall of the cantilever limiter 11 is arranged close to the bottom inner wall of the cantilever limiter 11, one rack limiter 12 in the housing located on the rear inner wall of the cantilever limiter 11 is arranged close to the top inner wall of the cantilever limiter 11, and another rack limiter 12 in the housing located on the rear inner wall of the cantilever limiter 11 is arranged close to the bottom inner wall of the cantilever limiter 11.

[0032] Furthermore, in a preferred embodiment, the four rack limiters 12 in the housing are parallel to each other.

[0033] Furthermore, in a preferred embodiment, the cantilever limiter 11 is a hollow rectangular parallelepiped shell.

[0034] Furthermore, in a preferred embodiment, the buffer 2 also includes: a rack 24, the N-pole magnet 21 and the S-pole magnet 22 are both arranged at the right end portion within the cantilever limiter 11, the N-pole magnet 21 is slidably connected to the rear inner wall of the buffer housing 1, the S-pole magnet 22 is slidably connected to the front inner wall of the buffer housing 1, the left end face of the N-pole magnet 21 is connected to two parallel racks 24, and the left end face of the S-pole magnet 22 is connected to two parallel racks 24.

[0035] Further, in a preferred embodiment, the four racks 24 are parallel to each other. One rack 24 located on the N - pole magnet 21 is on the upper side of the strip - shaped limiting hole, and another rack 24 located on the N - pole magnet 21 is on the lower side of the strip - shaped limiting hole. One rack 24 located on the S - pole magnet 22 is on the upper side of the strip - shaped limiting hole, and another rack 24 located on the S - pole magnet 22 is on the lower side of the strip - shaped limiting hole. The tooth - shaped structure of each rack 24 located on the N - pole magnet 21 faces the front side, and the tooth - shaped structure of each rack 24 located on the S - pole magnet 22 faces the rear side.

[0036] Further, in a preferred embodiment, the cantilever 3 includes: a gear mounting tenon 31, a gear 32, and an outer cantilever 33. Gear mounting tenons 31 are connected to both the upper and lower sides of one end of the outer cantilever 33. A gear 32 is mounted on each gear mounting tenon 31. The gear 32 located on the upper side of the outer cantilever 33 meshes with the tooth - shaped structure of the rack 24 located on the N - pole magnet 21 and on the upper side of the strip - shaped limiting hole, and also meshes with the tooth - shaped structure of the rack 24 located on the S - pole magnet 22 and on the upper side of the strip - shaped limiting hole. The gear 32 located on the lower side of the outer cantilever 33 meshes with the tooth - shaped structure of the rack 24 located on the N - pole magnet 21 and on the lower side of the strip - shaped limiting hole, and also meshes with the tooth - shaped structure of the rack 24 located on the S - pole magnet 22 and on the lower side of the strip - shaped limiting hole.

[0037] Further, in a preferred embodiment, the buffer 2 further includes: a rack stopper 23. The rear side of each rack 24 located on the N - pole magnet 21 is connected to a rack stopper 23, and the front side of each rack 24 located on the S - pole magnet 22 is connected to a rack stopper 23. Each rack stopper 23 matches with an inner - shell rack stopper 12.

[0038] Further, in a preferred embodiment, a gap for the outer cantilever 33 to pass through is provided between the two racks 24 located on the N - pole magnet 21.

[0039] Further, in a preferred embodiment, the cantilever lever 4 includes: a one - way locking tongue 41, a compression spring 42, and a cantilever lever housing 43. The cantilever lever housing 43 is installed on the door or window sash. The one - way locking tongue 41 is movably installed in the cantilever lever housing 43. The compression spring 42 is installed in the one - way locking tongue 41. One end of the compression spring 42 abuts against the door or window sash, and the other end abuts against the one - way locking tongue 41.

[0040] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model accordingly.

[0041] The present utility model further has the following implementation manners on the above basis:

[0042] In a further embodiment of the present utility model, a buffer structure for closing a door and window opening sash includes: a buffer housing 1, a buffer 2, a cantilever 3, and a cantilever lever 4. The cantilever lever 4 is installed on the door and window sash, and the buffer housing 1 is installed on the door and window frame. The buffer housing 1 is a hollow shell, and strip-shaped limiting holes communicating with each other are formed on the front side wall and the left side wall of the buffer housing 1;

[0043] The buffer 2 includes: an N-pole magnet 21, an S-pole magnet 22, and a rack 24. Both the N-pole magnet 21 and the S-pole magnet 22 are arranged at the right end inside the buffer housing 1. The N-pole magnet 21 can slide along the rear inner wall of the buffer housing 1, and the S-pole magnet 22 can slide along the front inner wall of the buffer housing 1. The N-pole magnet 21 and the S-pole magnet 22 are magnetically connected. Two parallel racks 24 are connected to the left end face of the N-pole magnet 21, and two parallel racks 24 are connected to the left end face of the S-pole magnet 22. One rack 24 on the N-pole magnet 21 is located above the strip-shaped limiting hole, and the other rack 24 on the N-pole magnet 21 is located below the strip-shaped limiting hole. One rack 24 on the S-pole magnet 22 is located above the strip-shaped limiting hole, and the other rack 24 on the S-pole magnet 22 is located below the strip-shaped limiting hole. The tooth profile structure of each rack 24 on the N-pole magnet 21 faces forward, and the tooth profile structure of each rack 24 on the S-pole magnet 22 faces backward;

[0044] The cantilever 3 includes: a gear mounting tenon 31, a gear 32, and an outer cantilever 33. Gear mounting tenons 31 are connected to both the upper and lower sides of one end of the outer cantilever 33, and a gear 32 is installed on each gear mounting tenon 31. The gear 32 located on the upper side of the outer cantilever 33 meshes with the tooth profile structure of the rack 24 located above the strip-shaped limiting hole on the N-pole magnet 21 and also meshes with the tooth profile structure of the rack 24 located above the strip-shaped limiting hole on the S-pole magnet 22. The gear 32 located on the lower side of the outer cantilever 33 meshes with the tooth profile structure of the rack 24 located below the strip-shaped limiting hole on the N-pole magnet 21 and also meshes with the tooth profile structure of the rack 24 located below the strip-shaped limiting hole on the S-pole magnet 22. The other end of the outer cantilever 33 extends out from the strip-shaped limiting hole. During the closing process of the door and window sash, the cantilever lever 4 pushes the end of the outer cantilever 33 that extends out from the strip-shaped limiting hole, so that the end of the outer cantilever 33 located inside the buffer housing 1 drives the two gears 32 to rotate, thereby driving the S-pole magnet 22 to slide along the front inner wall of the buffer housing 1, causing the N-pole magnet 21 and the S-pole magnet 22 to be misaligned, and realizing the buffer function for closing the door and window opening sash under the magnetic attraction of the N-pole magnet 21 and the S-pole magnet 22. As Figures 5 to 8 shown.

[0045] In a further embodiment of the present utility model, inner rack limiters 12 are provided on both the front inner wall and the rear inner wall of the buffer housing 1. The outer side of each rack 24 is connected to a rack limiter 23. One inner rack limiter 12 limits one rack limiter 23, ensuring that the N - pole magnet 21 slides stably along the rear inner wall of the buffer housing 1, and the S - pole magnet 22 slides stably along the front inner wall of the buffer housing 1. During the sliding process of the N - pole magnet 21 and the S - pole magnet 22 in the buffer housing 1, the gear 32 and the rack 24 are in a stable meshing state, enabling the closing buffer structure of the window and door opening sash to play a buffering role during the closing process of the window and door sash. And as the window and door sash opens, the closing buffer structure of the window and door opening sash resets and plays a buffering role again during the next closing process of the window and door sash.

[0046] In a further embodiment of the present utility model, the positions of the N - pole magnet 21 and the S - pole magnet 22 can be interchanged.

[0047] In a further embodiment of the present utility model, the inner rack limiter 12 and the rack limiter 23 can adopt a slide - rail structure to ensure that the N - pole magnet 21 slides stably along the rear inner wall of the buffer housing 1 and the S - pole magnet 22 slides stably along the front inner wall of the buffer housing 1.

[0048] In a further embodiment of the present utility model, this structure is a closing buffer device for a window and door opening sash, which is divided into two parts: the frame and the sash. This structure utilizes the attractive force between two magnets with different magnetic poles to achieve buffering and protection functions when the indoor and outdoor wind forces are large and quickly drive the window and door sash to close, or when the manual closing force of the door and window is large.

[0049] In a further embodiment of the present utility model, compared with the integrated wind brace structure used in traditional doors and windows, it solves the problems of fixed opening angle and small opening range; compared with general door closers, it solves the problem that they cannot maintain the open state. At the same time, this device has a simple structure, is convenient for installation and maintenance, can be installed and removed without damage for conventional doors and windows, and the installation position can be on both the upper and lower sides of the door and window frames and sashes.

[0050] In a further embodiment of the present utility model, the buffer housing 1, the buffer 2, and the cantilever 3 are pre - assembled, and a suitable frame installation position is determined according to the width of the opening window and door sash; the cantilever lever 4 is directly installed at the corresponding position on the sash.

[0051] In a further embodiment of the present utility model, when the window and door sash is in the open or installed state, as Figure 5 and Figure 6 shown. The N - pole magnet 21 and the S - pole magnet 22 in the buffer 2 attract each other, and the buffer 2 as a whole remains stable without external force, thereby ensuring that the cantilever 3 is also in a stable state; the compression spring 42 in the cantilever lever 4 remains in its original state because it is not under force.

[0052] In a further embodiment of the present utility model, when the door and window sash is closed by an external force, after the one-way lock tongue 41 contacts the external cantilever 33, the one-way lock tongue 41 drives the external cantilever 33 to rotate around its axis. At this time, the gear 32 drives the rack 24 to move, thereby causing the N-pole magnet 21 and the S-pole magnet 22 to move in a misaligned and separated manner. Since the external force needs to resist the attraction between the N-pole magnet 21 and the S-pole magnet 22, the effect of buffered closing is achieved at this time until the separation distance between the N-pole magnet 21 and the S-pole magnet 22 is relatively large and the attraction is not sufficient to resist the frictional force, and it can be considered that the buffering process is completed; since this attraction is less than the compression force of the compression spring 42, the one-way lock tongue 41 remains in its original state during the closing buffering process. As Figure 7 and Figure 8 shown.

[0053] In a further embodiment of the present utility model, when the door and window sash continues to close, the external cantilever 33 is restricted by the cantilever limit 11 and cannot continue to rotate. Due to the existence of the one-way lock tongue structure with a unilateral inclination on the one-way lock tongue 41, under the action of an external force, the one-way lock tongue 41 will continue to resist the external cantilever 33 and move further and slide into the cantilever lever housing 43. At this time, the compression spring 42 will be compressed until the one-way lock tongue 41 completely moves to the other side of the external cantilever 33, and the force in the compression spring 42 is released, and the one-way lock tongue 41 is ejected, and the door and window sash is completely closed. As Figure 9 and Figure 10 shown.

[0054] In a further embodiment of the present utility model, when the door and window sash is opened from the fully closed state, the one-way lock tongue 41 will drive the external cantilever 33 to rotate and move outward. Since the rotation radius of the one-way lock tongue 41 is greater than the rotation radius of the external cantilever 33, after the door and window sash is opened to a certain angle, the one-way lock tongue 41 is separated from the external cantilever 33. At this time, since the N-pole magnet 21 and the S-pole magnet 22 are not in a completely aligned state, the two structures will move towards each other due to the attraction force, driving the cantilever 3 to return to the initial sash opening and installation state. As Figure 1 and Figure 2 shown.

[0055] In a further embodiment of the present utility model, the one-way lock tongue 41 is provided with a one-way lock tongue structure with a unilateral inclination. During the process of the door and window sash turning from the fully open state to the closed state, when the door and window sash rotates to Figure 7 the position shown, the one-way lock tongue structure with a unilateral inclination on the one-way lock tongue 41 faces the external cantilever 33, ensuring that during the process of continuously pushing the door and window sash to close, under the action of the one-way lock tongue structure with a unilateral inclination, the external cantilever 33 pushes the one-way lock tongue 41 to move into the cantilever lever housing 43, compressing the compression spring 42 until the external cantilever 33 completely passes through the cantilever lever 4 and moves to Figure 9 the position shown.

[0056] In a further embodiment of the present utility model, Figure 1 and Figure 2 are the installation positions of the buffer housing 1, buffer 2, cantilever 3, and cantilever lever 4 of the buffer structure for closing the opening and closing fan of the door and window. At the same time, they serve as the buffer restoration limit positions during the opening process of the door and window fan. According to Figure 1 and Figure 2 shown in the positional relationship, install the buffer housing 1 on the door and window frame, install the cantilever lever 4 on the door and window fan. At the same time, as Figure 1 and Figure 2 shown, adjust the installation positions of the buffer 2 and the cantilever 3 in the buffer housing 1. It can ensure that during the process of the door and window fan changing from the closed state to the fully open state, the cantilever lever 4 will push the cantilever 3 to rotate, and the cantilever lever 4 will reset the position of the cantilever 3, that is, the door and window fan rotates from the position shown in Figure 9 to the position shown in Figure 1 shown. Ensure that during the next closing process of the door and window fan, the cantilever lever 4 plays a buffering role in pushing the cantilever 3, realizing the function of buffering the closing of the opening and closing fan of the door and window.

[0057] In a further embodiment of the present utility model, two inner housing rack limiters 12 are connected to the front inner wall of the cantilever limiter 11. The front sides of the two racks 24 on the N - pole magnet 21 are both connected with rack limiters 23. The two rack limiters 23 are both located between the two inner housing rack limiters 12 on the front inner wall of the cantilever limiter 11. The two rack limiters 23 are limited by the two inner housing rack limiters 12 on the front inner wall of the cantilever limiter 11 to ensure that the N - pole magnet 21 slides along the two inner housing rack limiters 12 on the front inner wall of the cantilever limiter 11. Two inner housing rack limiters 12 are connected to the rear inner wall of the cantilever limiter 11. The rear sides of the two racks 24 on the S - pole magnet 22 are both connected with rack limiters 23. The two rack limiters 23 are both located between the two inner housing rack limiters 12 on the rear inner wall of the cantilever limiter 11. The two rack limiters 23 are limited by the two inner housing rack limiters 12 on the rear inner wall of the cantilever limiter 11 to ensure that the S - pole magnet 22 slides along the two inner housing rack limiters 12 on the rear inner wall of the cantilever limiter 11.

[0058] In a further embodiment of the present utility model, both the upper and lower sides of one end of the external cantilever 33 are connected with gear installation tenons 31. One gear 32 is installed on each gear installation tenon 31. The front side of each gear 32 meshes with one rack 24 on the N - pole magnet 21, and the rear side of each gear 32 meshes with one rack 24 on the S - pole magnet 22. By rotating the external cantilever 33, it can drive the two gears 32 to rotate synchronously, and further push the N - pole magnet 21 to slide along the front inner wall of the cantilever limiter 11 or the S - pole magnet 22 to slide along the rear inner wall of the cantilever limiter 11.

[0059] In a further embodiment of the present utility model, when the door and window sash rotates from the fully open state to the closed state, the door and window sash first rotates to Figure 5 the position shown, at this time the external cantilever 33 is about to collide with the one-way locking tongue 41, and the positions of the N-pole magnet 21, the S-pole magnet 22 and the two gears 32 are as shown in Figure 6 the figure. The N-pole magnet 21 and the S-pole magnet 22 are located in the same vertical plane and are closely attracted to each other. The front and rear sides of each gear 32 are respectively engaged with a rack 24. The door and window sash continues to rotate in the closing direction, and the one-way locking tongue 41 pushes the external cantilever 33 to rotate, causing the two gears 32 to rotate synchronously. During the rotation of the gears 32, relative displacements occur between both the N-pole magnet 21 and the S-pole magnet 22 and the two gears 32. The N-pole magnet 21 is displaced to the right relative to the two gears 32, and the S-pole magnet 22 is displaced to the left relative to the two gears 32. After the N-pole magnet 21 slides along the front inner wall of the cantilever limit 11 and abuts against the right inner wall of the cantilever limit 11, the N-pole magnet 21 cannot continue to slide to the right. At this time, the gear 32 continues to move to the left, and at the same time pushes the S-pole magnet 22 to continue to move to the left, as shown in Figure 8 the figure. During the process that the door and window sash continues to rotate in the closing direction and moves to the closed position, the one-way locking tongue 41 displaces into the inside of the cantilever toggle housing 43, and the compression spring 42 is compressed until the one-way locking tongue 41 completely moves to the other side of the external cantilever 33. The force in the compression spring 42 is released, the one-way locking tongue 41 is ejected, and the door and window sash is completely closed, as shown in Figure 9 the figure. The internal structure of the buffer housing 1 is as shown in Figure 10 the figure, and the N-pole magnet 21 and the S-pole magnet 22 are in a completely staggered and separated state.

[0060] In a further embodiment of the present utility model, when the door and window sash rotates from the closed state to the fully open state, by pushing the external cantilever 33 to rotate through the one-way locking tongue 41, the external cantilever 33 rotates from the position shown in Figure 9 to the position shown in Figure 1 the figure. After passing through the position shown in Figure 6 inside the cantilever limit 11, the S-pole magnet 22 abuts against the right inner wall, and the N-pole magnet 21 and the gear 32 will continue to move to the left to the position shown in Figure 2 the figure. After that, the door and window sash continues to unfold, the external cantilever 33 is separated from the one-way locking tongue 41, and under the magnetic attraction of the N-pole magnet 21 and the S-pole magnet 22, the inside of the cantilever limit 11 will return to the position shown in Figure 6 the figure.

[0061] In a further embodiment of the present utility model, arranging the two gears 32 to be engaged with the two racks 24 of the S-pole magnet 22 and the two racks 24 on the N-pole magnet 21 can increase the meshing area and ensure the stability of the transmission.

[0062] In a further embodiment of the present utility model,Figure 6 Both the N - pole magnet 21 and the S - pole magnet 22 abut against the right - hand inner wall of the cantilever limit 11.

[0063] In a further embodiment of the present utility model, the external cantilever 33 rotates within the strip - shaped limit hole, and the inner wall of the strip - shaped limit hole limits the rotation position of the external cantilever 33. Two racks 24 are connected to the S - pole magnet 22, and the gap between the two racks 24 on the S - pole magnet 22 facilitates the passage of the external cantilever 33. Two racks 24 are connected to the N - pole magnet 21. The N - pole magnet 21 can be interchanged with the S - pole magnet 22 in position, and the gap between the two racks 24 on the N - pole magnet 21 facilitates the passage of the external cantilever 33.

[0064] In a further embodiment of the present utility model, Figure 6 the N - pole magnet 21 and the S - pole magnet 22 are magnetically connected. Figure 6 The state shown is the stable state of the N - pole magnet 21 and the S - pole magnet 22. During the opening and closing processes of the door or window sash, the N - pole magnet 21 and the S - pole magnet 22 will be misaligned and separated, as shown in Figure 2 , Figure 8 and Figure 10 shown. Due to the interaction of forces, sufficient force needs to be applied during the process of realizing the misalignment and separation of the N - pole magnet 21 and the S - pole magnet 22. That is, when the door or window sash is closing, it pushes the N - pole magnet 21 and the S - pole magnet 22 to be misaligned and separated, and the misalignment and separation of the N - pole magnet 21 and the S - pole magnet 22 also play a buffering role in the closing process of the door or window sash.

[0065] In a further embodiment of the present utility model, the two racks 24 on the N - pole magnet 21 and the two racks 24 on the S - pole magnet 22 have the same specifications, ensuring the synchronous and stable displacement of the N - pole magnet 21 and the S - pole magnet 22 along the inner wall of the cantilever limit 11.

[0066] In a further embodiment of the present utility model, the structure of the closing - buffering structure for the opening sash of the door or window is simple and the installation is convenient, greatly saving the installation space between the door or window sash and the door or window frame.

[0067] In a further embodiment of the present utility model, during the closing process of the door or window sash, the closing - buffering structure for the opening sash of the door or window realizes the misalignment and separation of the N - pole magnet 21 and the S - pole magnet 22 by pushing the external cantilever 33 to rotate. Due to the interaction of forces, it plays a buffering role in the closing process of the door or window sash. During the complete closing process of the door or window sash, the external cantilever 33 pushes the one - way lock tongue 41 to displace towards the inside of the cantilever lever housing 43, compressing the compression spring 42. Until the one - way lock tongue 41 completely moves to the other side of the external cantilever 33, the force in the compression spring 42 is released, and the one - way lock tongue 41 is ejected, and the door or window sash is completely closed.

[0068] In a further embodiment of the present utility model, during the opening process of the door and window opening sash, the one-way lock tongue 41 pushes the external cantilever 33 to rotate, realizing the reset of the external cantilever 33, and ensuring that during the next closing process of the door and window sash, the closing buffer structure of the door and window opening sash can produce a buffering effect on the closing process of the door and window sash.

[0069] In a further embodiment of the present utility model, the closing buffer structure of the door and window opening sash does not limit the opening angle of the door and window sash. The door and window sash can be fully opened and can be in a normally open state.

[0070] The above are only preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model accordingly. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrated content of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A door and window opening and closing buffer structure, characterized in that: include: A buffer shell (1), a buffer (2), a cantilever (3) and a cantilever lever (4), wherein the cantilever lever (4) is mounted on a door or window sash, the buffer shell (1) is mounted on a door or window frame, a strip-shaped limiting hole is provided on the buffer shell (1), and the buffer (2) comprises an N-pole magnet (21) and an S-pole magnet (22), both of which are arranged in the buffer shell (1), the N-pole magnet (21) and the S-pole magnet (22) are magnetically connected, one end of the cantilever (3) is transmission-connected to the buffer (2), and the other end of the cantilever (3) extends out of the strip-shaped limiting hole, and during the closing process of the door or window sash, the cantilever lever (4) pushes the cantilever (3) to rotate around one end located in the buffer shell (1), thereby pushing the N-pole magnet (21) and the S-pole magnet (22) to be dislocated and separated.

2. The door and window opening and closing buffer structure according to claim 1 is characterized in that: The buffer shell (1) comprises: a cantilever limiter (11) and a shell inner rack limiter (12); the cantilever limiter (11) is a hollow shell; the front side wall and the left side wall of the cantilever limiter (11) are provided with interconnected strip-shaped limiter holes; the front inner wall and the rear inner wall of the cantilever limiter (11) are both connected to two shell inner rack limiters (12); one shell inner rack limiter (12) located on the front inner wall of the cantilever limiter (11) is close to the cantilever limiter (11) ), another rack limiter (12) in the outer shell located on the front inner wall of the cantilever limiter (11) is arranged close to the bottom inner wall of the cantilever limiter (11), one rack limiter (12) in the outer shell located on the rear inner wall of the cantilever limiter (11) is arranged close to the top inner wall of the cantilever limiter (11), and another rack limiter (12) in the outer shell located on the rear inner wall of the cantilever limiter (11) is arranged close to the bottom inner wall of the cantilever limiter (11).

3. The door and window opening and closing buffer structure according to claim 2 is characterized in that: The four inner rack limiters (12) of the housing are parallel to each other.

4. The door and window opening and closing buffer structure according to claim 2, characterized in that: The cantilever limiter (11) is a hollow rectangular parallelepiped shell.

5. The door and window opening and closing buffer structure according to claim 2, characterized in that: The buffer (2) also includes: a rack (24); an N-pole magnet (21) and an S-pole magnet (22) are both arranged at the right end portion of the cantilever limiter (11); the N-pole magnet (21) is slidably connected to the rear inner wall of the buffer housing (1); the S-pole magnet (22) is slidably connected to the front inner wall of the buffer housing (1); the left end face of the N-pole magnet (21) is connected to two racks (24) arranged in parallel; and the left end face of the S-pole magnet (22) is connected to two racks (24) arranged in parallel.

6. The door and window opening and closing buffer structure according to claim 5, characterized in that: The four racks (24) are parallel to each other, one rack (24) located on the N-pole magnet (21) is located on the upper side of the bar-shaped limiting hole, another rack (24) located on the N-pole magnet (21) is located on the lower side of the bar-shaped limiting hole, one rack (24) located on the S-pole magnet (22) is located on the upper side of the bar-shaped limiting hole, another rack (24) located on the S-pole magnet (22) is located on the lower side of the bar-shaped limiting hole, the toothed structure of each rack (24) located on the N-pole magnet (21) faces the front side, and the toothed structure of each rack (24) located on the S-pole magnet (22) faces the rear side.

7. The door and window opening and closing buffer structure according to claim 6, characterized in that: The cantilever (3) comprises: a gear mounting tenon (31), a gear (32) and an external cantilever (33); the upper and lower sides of one end of the external cantilever (33) are connected to the gear mounting tenon (31); a gear (32) is mounted on each gear mounting tenon (31); the gear (32) located on the upper side of the external cantilever (33) meshes with a toothed structure of a rack (24) located on the N-pole magnet (21) and on the upper side of the bar-shaped limiting hole; the gear (32) located on the upper side of the external cantilever (33) meshes with a toothed structure of a rack (24) located on the N-pole magnet (21) and on the upper side of the bar-shaped limiting hole; The gear (32) is meshed with a toothed structure of a rack (24) located on the S-pole magnet (22) and on the upper side of the bar-shaped limiting hole; the gear (32) located on the lower side of the external cantilever (33) is meshed with a toothed structure of a rack (24) located on the N-pole magnet (21) and on the lower side of the bar-shaped limiting hole; and the gear (32) located on the lower side of the external cantilever (33) is meshed with a toothed structure of a rack (24) located on the S-pole magnet (22) and on the lower side of the bar-shaped limiting hole.

8. The door and window opening and closing buffer structure according to claim 7, characterized in that: The buffer (2) also includes: a rack stopper (23), wherein the rear side of each rack (24) located on the N-pole magnet (21) is connected to a rack stopper (23), and the front side of each rack (24) located on the S-pole magnet (22) is connected to a rack stopper (23), and each rack stopper (23) matches a rack stopper (12) in the housing.

9. The door and window opening and closing buffer structure according to claim 7, characterized in that: A gap is provided between two racks (24) located on the N-pole magnet (21) for the external cantilever (33) to pass through.

10. The door and window opening and closing buffer structure according to claim 7, characterized in that: The cantilever lever (4) comprises: a one-way lock tongue (41), a compression spring (42) and a cantilever lever housing (43); the cantilever lever housing (43) is mounted on the door or window sash; the one-way lock tongue (41) is movably mounted in the cantilever lever housing (43); the compression spring (42) is mounted in the one-way lock tongue (41); one end of the compression spring (42) abuts against the door or window sash; and the other end of the compression spring (42) abuts against the one-way lock tongue (41).

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