Hidden type two-stage limiting device used for aluminum-clad wood window and integrating detachable type and child safety micro-ventilation limiting

Abstract

The utility model discloses a hidden type two-stage limiting device used for an aluminum-clad wood window and integrating detachable type and child safety micro-ventilation limiting, relates to the technical field of door and window assemblies, solves the problems that the ventilation quantity of doors and windows is difficult to adjust, and the doors and the windows have potential safety hazards, and comprises a sash upper limiting structure and a frame upper limiting structure, the upper frame limiting structure is installed on the window frame, the upper sash limiting structure is installed on the window sash, and a second connecting sliding point of the upper sash limiting structure is installed in a sliding assembly groove formed by a fixed sliding groove and a movable sliding groove in a surrounding mode in the upper frame limiting structure in a sliding mode. The utility model has the advantages that the structure is simple, the structure is relatively independent from window hardware, small-angle opening can be realized, a micro-ventilation effect is achieved, a safety limiting effect can be achieved, large-angle opening limiting and large-ventilation quantity effects are also considered, and the structure is matched with nylon pieces, springs and the like, is suitable for inward and outward opening window products and is suitable for being matched with European standard U-groove hardware system aluminum-clad wood windows.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window components, and in particular to a hidden double-stage limit device for aluminum-clad wooden windows, which integrates a detachable and child-safe micro-ventilation limiter. Background Art

[0002] As the outer wall protection structure of a building, windows have many advantages. Through windows, you can exchange air, bathe in the sun, and watch the outside world. However, as the weakest component of the building's outer structure, windows also have many disadvantages, such as poor insulation, heat insulation, and noise reduction compared to walls. When the wind is strong at high-rise buildings, the open window sash will hit the wall under the action of the wind or open the sash body at a larger angle, exceeding the range of the hardware stroke, and then damage the sash body. The countermeasure is to install a limit device. The existing limit devices on the market can only solve the limit function of the window sash. Some limit opening angles are smaller, which ensures that children do not fall and micro-ventilation, but large ventilation cannot be met. The large opening angle limit solves the high ventilation volume, but it cannot solve the risk of children falling from the building. In recent years, the country has introduced many policies on the situation of children falling, and various window product supporting companies have also taken corresponding countermeasures, such as hanging glass guardrails, aluminum square tube guardrails, safety locks, diamond mesh, etc. on the outside of the open sash, which have played a good anti-falling effect, but the cost is high and exposed on the surface of the window body affects the aesthetics. Utility Model Content

[0003] In view of the above-mentioned problem that it is difficult to adjust the ventilation volume of doors and windows and there are safety hazards in doors and windows, the purpose of the utility model is to provide a hidden two-stage limit device for aluminum-clad wood windows that integrates a detachable and child-safe micro-ventilation limiter.

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

[0005] A concealed double-stage limit device for aluminum-clad wood windows that integrates detachable and child-safe micro-ventilation limiter, comprising: a sash upper limit structure 1 and a frame upper limit structure 2, wherein the frame upper limit structure 2 is mounted on the window frame, and the sash upper limit structure 1 is mounted on the window sash;

[0006] The window upper limit structure 1 comprises: a primary connecting rod 101, a secondary connecting rod 102, a limiting slide 103, a first connecting sliding point 104, a second connecting sliding point 105 and a connecting rotating point 106, wherein the limiting slide 103 is installed on the window sash, a slide groove 110 is provided on the limiting slide 103, the first connecting sliding point 104 is slidably installed in the slide groove 110, one end of the secondary connecting rod 102 is rotatably connected to the first connecting sliding point 104, the other end of the secondary connecting rod 102 is rotatably connected to one end of the primary connecting rod 101 through the connecting rotating point 106, and the other end of the primary connecting rod 101 is rotatably connected to the second connecting sliding point 105;

[0007] The frame limiting structure 2 comprises: a locking button 201, a sliding member 203 and a fixing member 205, wherein the fixing member 205 is installed on the window frame, one end of the top plate of the fixing member 205 is connected to the locking button 201, and the other end of the top plate of the fixing member 205 is provided with a fixing slide groove 209, the sliding member 203 is slidably installed on the middle part of the upper surface of the bottom plate of the fixing member 205, a moving slide groove 208 is provided on the side of the sliding member 203 facing the fixing slide groove 209, and a clamping locking groove 204 matching the locking button 201 is provided on the side of the sliding member 203 facing the locking button 201;

[0008] The second connection sliding point 105 is slidably installed in a sliding assembly groove formed by the fixed sliding groove 209 and the movable sliding groove 208 .

[0009] The above-mentioned hidden double-stage limiting device, wherein the frame limiting structure 2 also includes: a slide rail pressing block 202, a slide rail groove 206 is opened on the sliding member 203, and the slide rail pressing block 202 is arranged in the slide rail groove 206 and connected to the bottom plate of the fixing member 205.

[0010] The above-mentioned hidden two-stage limit device, wherein the frame limit structure 2 also includes: a first spring 207, at least one spring assembly groove is opened on the sliding member 203, each spring assembly groove is parallel to the slide rail groove 206, and each spring assembly groove is provided with a limit baffle portion connected to the fixing member 205, and a first spring 207 is installed in each spring assembly groove, one end of the first spring 207 is against the limit baffle portion, and the other end of the first spring 207 is against the inner wall of one side of the spring assembly groove close to the fixed slide groove 209.

[0011] The above-mentioned hidden two-stage limit device also includes: a bolt and a second spring, wherein the locking button 201 is installed on the fixing member 205 by means of a bolt, the second spring is sleeved on the second spring, one end of the second spring is against the upper surface of the bottom plate of the fixing member 205, and the other end of the second spring is against the bottom surface of the locking button 201.

[0012] In the above-mentioned hidden double-stage limiting device, screw holes 210 are provided at both ends of the fixing member 205 .

[0013] In the above-mentioned hidden double-stage limiting device, both ends of the limiting slide 103 are provided with assembly through holes.

[0014] The above-mentioned hidden two-stage limit device, wherein the fan upper limit structure 1 also includes: a clamping fixing 108 and a clamping sliding block 109, the clamping fixing 108 is installed at the end of the limiting slide 103, the clamping sliding block 109 is slidably installed in the clamping fixing 108, and the end of the other end of the secondary connecting rod 102 is provided with a second connecting rod terminal 107, when the clamping sliding block 109 is located on the side of the clamping fixing 108 close to the secondary connecting rod 102, the clamping sliding block 109 limits the second connecting rod terminal 107, and when the clamping sliding block 109 is located on the side of the clamping fixing 108 away from the secondary connecting rod 102, the second connecting rod terminal 107 can rotate around the first connecting sliding point 104.

[0015] The above-mentioned hidden two-stage limit device, wherein the door upper limit structure 1 also includes: a third spring, one end of the third spring abuts against the inner wall of the clamping fixing piece 108 away from the secondary connecting rod 102, and the other end of the third spring abuts against the clamping sliding block 109.

[0016] The above-mentioned hidden two-stage limit device, wherein, when the aluminum-clad wood window is in a closed state, the first-level connecting rod 101, the second-level connecting rod 102 and the limiting slide 103 are parallel to each other, the first connecting sliding point 104 is located at one end of the slide groove 110 away from the clamping fixing piece 108, and the second connecting rod terminal 107 is clamped with the clamping sliding block 109.

[0017] The above-mentioned hidden two-stage limit device, wherein a locking button 201 is provided with a snap-fitting portion. When the snap-fitting portion is snapped into the snap-fitting locking groove 204, the plurality of first springs 207 are all in a compressed state, and the second connection sliding point 105 can be moved out of the sliding assembly groove.

[0018] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0019] (1) In the present invention, the device is concealed and installed between the lower frame and the sash near the handle. The device cannot be seen after the frame and the sash are closed. The device is relatively independent from the window hardware and does not interfere with each other.

[0020] (2) In the utility model, the device can be opened at a small angle to achieve a micro-ventilation effect, and can also play a role in safety limit to prevent children from falling from the building. At the same time, it can also be opened at a large angle to achieve a large ventilation effect. It can be easily disassembled and can ensure safety limit at any time to ensure safety;

[0021] (3) In the present invention, the main body of the device is made of 304 stainless steel, with matching nylon parts, springs, etc. It is low-cost and rust-proof, suitable for internal and external window products, and suitable for matching European standard U-slot hardware system aluminum-clad wooden windows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a structural schematic diagram of a hidden double-stage limit device for an aluminum-clad wooden window, which integrates a detachable and child-safe micro-ventilation limiter.

[0023] Figure 2 The utility model is a top view of a hidden double-stage limit device for an aluminum-clad wooden window, which integrates a detachable and child-safe micro-ventilation limiter.

[0024] Figure 3 The utility model is a structural schematic diagram of a sash upper limit structure of a concealed double-stage limit device for an aluminum-clad wooden window, which integrates a detachable and child-safe micro-ventilation limiter.

[0025] Figure 4 The utility model is a top view of a sash upper limit structure of a concealed double-stage limit device for an aluminum-clad wooden window, which integrates a detachable and child-safe micro-ventilation limiter.

[0026] Figure 5 The utility model is a structural schematic diagram of a frame limit structure of a hidden double-stage limit device which is used on an aluminum-clad wooden window and integrates a detachable and child-safe micro-ventilation limit.

[0027] Figure 6 It is a top view of a frame limit structure of a hidden double-stage limit device for an aluminum-clad wooden window, which integrates a detachable and child-safe micro-ventilation limiter.

[0028] In the accompanying drawings: 1. upper limit structure of the fan; 2. upper limit structure of the frame; 101. primary connecting rod; 102. secondary connecting rod; 103. limit slide; 104. first connecting sliding point; 105. second connecting sliding point; 106. connecting rotation point; 107. second connecting rod terminal; 108. clamping fixing piece; 109. clamping sliding block; 110. slideway groove; 201. locking button; 202. slide rail pressure block; 203. sliding piece; 204. clamping locking groove; 205. fixing piece; 206. slide rail groove; 207. first spring; 208. movable slide groove; 209. fixed slide groove; 210. screw hole. 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 6 As shown, a hidden double-stage limit device for aluminum-clad wood windows is shown, which integrates detachable and child-safe micro-ventilation limiter, and includes: a sash upper limit structure 1 and a frame upper limit structure 2, wherein the frame upper limit structure 2 is installed on the window frame, and the sash upper limit structure 1 is installed on the window sash;

[0031] The window upper limit structure 1 comprises: a primary connecting rod 101, a secondary connecting rod 102, a limiting slide 103, a first connecting sliding point 104, a second connecting sliding point 105 and a connecting rotating point 106, the limiting slide 103 is installed on the window sash, a slide groove 110 is provided on the limiting slide 103, the first connecting sliding point 104 is slidably installed in the slide groove 110, one end of the secondary connecting rod 102 is rotatably connected to the first connecting sliding point 104, the other end of the secondary connecting rod 102 is rotatably connected to one end of the primary connecting rod 101 through the connecting rotating point 106, and the other end of the primary connecting rod 101 is rotatably connected to the second connecting sliding point 105;

[0032] The frame upper limit structure 2 comprises: a locking button 201, a sliding member 203 and a fixing member 205, wherein the fixing member 205 is installed on the window frame, one end of the top plate of the fixing member 205 is connected to the locking button 201, and the other end of the top plate of the fixing member 205 is provided with a fixing slide groove 209, the sliding member 203 is slidably installed on the middle part of the upper surface of the bottom plate of the fixing member 205, a moving slide groove 208 is provided on the side of the sliding member 203 facing the fixing slide groove 209, and a clamping locking groove 204 matching the locking button 201 is provided on the side of the sliding member 203 facing the locking button 201;

[0033] The second connection sliding point 105 is slidably installed in a sliding assembly groove formed by the fixed sliding groove 209 and the movable sliding groove 208 .

[0034] Furthermore, in a preferred embodiment, the frame limiting structure 2 further includes: a slide rail pressing block 202 , a slide rail groove 206 is opened on the sliding member 203 , and the slide rail pressing block 202 is arranged in the slide rail groove 206 and connected to the bottom plate of the fixing member 205 .

[0035] Furthermore, in a preferred embodiment, the frame limit structure 2 also includes: a first spring 207, at least one spring assembly groove is opened on the sliding member 203, each spring assembly groove is parallel to the slide rail groove 206, each spring assembly groove is provided with a limit baffle portion connected to the fixing member 205, and each spring assembly groove is installed with a first spring 207, one end of the first spring 207 is against the limit baffle portion, and the other end of the first spring 207 is against the inner wall of one side of the spring assembly groove close to the fixed slide groove 209.

[0036] Furthermore, in a preferred embodiment, it also includes: a bolt and a second spring, the locking button 201 is installed on the fixing member 205 by the bolt, the second spring is sleeved on the second spring, one end of the second spring is against the upper surface of the bottom plate of the fixing member 205, and the other end of the second spring is against the bottom surface of the locking button 201.

[0037] Furthermore, in a preferred embodiment, screw holes 210 are provided at both ends of the fixing member 205 .

[0038] Furthermore, in a preferred embodiment, both ends of the limiting slide 103 are provided with assembly through holes.

[0039] Furthermore, in a preferred embodiment, the fan upper limit structure 1 also includes: a clamping fixture 108 and a clamping sliding block 109, the clamping fixture 108 is installed at the end of the limiting slide 103, the clamping sliding block 109 is slidably installed in the clamping fixture 108, and the end of the other end of the secondary connecting rod 102 is provided with a second connecting rod terminal 107, when the clamping sliding block 109 is located on the side of the clamping fixture 108 close to the secondary connecting rod 102, the clamping sliding block 109 limits the second connecting rod terminal 107, and when the clamping sliding block 109 is located on the side of the clamping fixture 108 away from the secondary connecting rod 102, the second connecting rod terminal 107 can rotate around the first connecting sliding point 104.

[0040] Furthermore, in a preferred embodiment, the door upper limit structure 1 also includes: a third spring, one end of the third spring abuts against the inner wall of the clamping fixing piece 108 away from the secondary connecting rod 102, and the other end of the third spring abuts against the clamping sliding block 109.

[0041] Furthermore, in a preferred embodiment, when the aluminum-clad wood window is in a closed state, the first-level connecting rod 101, the second-level connecting rod 102 and the limiting slide 103 are parallel to each other, the first connecting sliding point 104 is located at one end of the slide groove 110 away from the clamping fixing piece 108, and the second-link terminal 107 is clamped with the clamping sliding block 109.

[0042] Furthermore, in a preferred embodiment, a snap-fitting portion is provided on the locking button 201. When the snap-fitting portion is snap-fitted into the snap-fitting locking groove 204, the plurality of first springs 207 are all in a compressed state, and the second connecting sliding point 105 can be moved out of the sliding assembly groove.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention.

[0044] The utility model also has the following implementation methods based on the above:

[0045] In a further embodiment of the utility model, the frame upper limit structure 2 is installed on the window frame, and the sash upper limit structure 1 is installed on the window sash. The frame upper limit structure 2 includes: a sliding member 203, a fixing member 205 and a locking button 201. The sliding member 203 is slidably installed on the fixing member 205, and the locking button 201 is fixedly installed on one end of the top plate of the fixing member 205. The sliding member 203 is pushed to make the clamping locking groove 204 located thereon clamped with the clamping part on the locking button 201. At this time, the distance between the sliding member 203 and the other end of the top plate of the fixing member 205 is the maximum, and a fixed slide groove 209 is provided at the other end of the top plate of the fixing member 205. A movable slide groove 208 is provided on the side of the sliding member 203 facing the fixed slide groove 209. The sliding assembly groove formed by the fixed slide groove 209 and the movable slide groove 208 is When the distance between the other end of the top plate of the component 205 is the largest, a gap appears at the joint between the fixed slide groove 209 and the movable slide groove 208. At this time, the second connecting sliding point 105 can be moved into the fixed slide groove 209 from the gap, or moved out of the fixed slide groove 209, thereby realizing the assembly or disassembly between the sash upper limit structure 1 and the frame upper limit structure 2. Then press 201 to move 201 downward and out of the locking groove 204. The first springs 207 are released from the compressed state. At this time, the sliding member 203 slides on the fixed member 205 under the action of the first springs 207. The distance between the other end of the sliding member 203 and the top plate of the fixed member 205 is the smallest. The gap at the joint between the fixed slide groove 209 and the movable slide groove 208 disappears, thereby preventing the second connecting sliding point 105 assembled in the fixed slide groove 209 from moving out during the opening and closing process of the window sash.

[0046] In a further embodiment of the utility model, a clamping fixture 108 and a clamping sliding block 109 are provided on the sash upper limit structure 1, and the clamping sliding block 109 is slidably installed in the clamping fixture 108. A second connecting rod terminal 107 is provided on the secondary connecting rod 102. When the window sash is in a closed state, the second connecting rod terminal 107 is clamped in the clamping sliding block 109. Figure 3 and Figure 4 As shown, during the opening process of the window sash, the second connecting rod terminal 107 does not rotate, the first connecting rod 101 rotates around the connection rotation point 106, and the second connecting sliding point 105 slides in the sliding assembly groove. When the second connecting sliding point 105 slides to the bottom of the fixed sliding groove 209, it is in the first limit state, and the window sash is opened to the maximum angle, that is, the child safety micro-ventilation state.

[0047] In a further embodiment of the utility model, the clamping sliding block 109 is manually pushed to slide in the clamping fixing member 108 to release the clamping limit of the clamping sliding block 109 on the second connecting rod terminal 107. At this time, the window sash can be pulled to further increase the opening angle of the window sash, and the first connecting sliding point 104 slides along the slide groove 110. Figure 3The position shown slides to the end of the slideway groove 110 close to the clamping fixing piece 108. At this time, it is in the secondary limit state, the maximum angle of the window sash opening, that is, the full ventilation state.

[0048] In a further embodiment of the utility model, the sliding member 203 is manually pushed so that the locking groove 204 thereon is engaged with the engaging portion on the locking button 201. At this time, the second connecting sliding point 105 can be moved out of the sliding assembly groove. At this time, it is in an unlimited position state, and the window sash can continue to be opened to the maximum angle it can reach, that is, the hidden two-stage limit device is disassembled.

[0049] In a further embodiment of the present invention, a third spring is installed in the clamping fixture 108, one end of the third spring abuts against the inner wall of the clamping fixture 108 away from the secondary connecting rod 102, and the other end of the third spring abuts against the clamping sliding block 109. The clamping sliding block 109 is manually pushed to slide in the clamping fixture 108. After the clamping limit of the second connecting rod terminal 107 is released, the clamping sliding block 109 can be pushed to automatically reset by the third spring. At the same time, during the closing process of the window sash, the first connecting sliding point 104 slides along the slide groove 110 to Figure 3 In the position shown, the second-link terminal 107 pushes the clamping slide block 109 to slide in the clamping fixture 108 until the second-link terminal 107 completely enters the clamping position of the clamping slide block 109 on the second-link terminal 107, that is, the parallel position of the secondary connecting rod 102 and the limiting slide 103, the clamping slide block 109 is reset under the action of the third spring, so that the clamping slide block 109 is clamped to the second-link terminal 107.

[0050] In a further embodiment of the utility model, the locking button 201 is mounted on the fixing member 205 by bolts, and the second spring is sleeved on the second spring. One end of the second spring abuts against the upper surface of the bottom plate of the fixing member 205, and the other end of the second spring abuts against the bottom surface of the locking button 201. After the locking button 201 is manually pressed downward to release the clamping lock of the slide rail pressure block 202, the locking button 201 can be pushed to automatically reset by the second spring.

[0051] In a further embodiment of the utility model, the slide rail pressing block 202 is assembled on the fixing member 205 by screws, a slide rail groove 206 is provided on the sliding member 203, the slide rail pressing block 202 is located in the slide rail groove 206, and the slide rail pressing block 202 is used to limit the sliding member 203, thereby ensuring that the sliding member 203 slides along the slide rail groove 206 located thereon.

[0052] In a further embodiment of the present invention, inclined surfaces are provided on both sides of the movable slide groove 208 of the sliding member 203, such as Figure 6As shown, when the window sash is in the disassembled state of the hidden double-stage limit device, the second connecting sliding point 105 is located outside the sliding assembly groove. During the closing process of the window sash, the primary connecting rod 101 and the secondary connecting rod 102 are folded and reset to Figure 1 In the position shown, the second connecting rod terminal 107 abuts against the clamping sliding block 109, and the second connecting sliding point 105 abuts against the outer inclined surface of the movable sliding groove 208. By pressing the window sash, the second connecting rod terminal 107 pushes the clamping sliding block 109 to move, and limits the second connecting rod terminal 107 by the clamping sliding block 109. The second connecting sliding point 105 pushes the sliding member 203 to move, and limits the second connecting sliding point 105 by the sliding member 203. At this time, the second connecting sliding point 105 is located in the sliding assembly groove. At this time, when the window sash is opened again, the window sash will be in a child-safe micro-ventilation state.

[0053] In a further embodiment of the utility model, the utility model provides a specific solution to solve the above situation - that is, "a hidden two-stage limit device that integrates detachable and child-safe micro-ventilation limit". The device is hidden and installed between the lower frame and sash near the handle side. After the frame and sash are closed, the device cannot be seen. It is relatively independent of the window hardware and does not interfere with each other. The device can achieve a small-angle opening to achieve a micro-ventilation effect, and can also play a role in safety limiting to prevent children from falling from buildings. At the same time, it takes into account the large-angle opening limit and the large ventilation effect. It can be easily disassembled and can ensure safety limit at any time to ensure safety. The main body is made of 304 stainless steel, with supporting nylon parts, springs, etc. It is low-cost and rust-proof. It is suitable for internal and external window products and is suitable for matching European standard U-slot hardware system aluminum-clad wood windows.

[0054] In a further embodiment of the utility model, the device is composed of two parts: a frame and a sash. The frame upper limit structure 2 includes a sliding member 203 (movable slide groove), a fixed slide groove 209, a locking button 201, etc.; the sash upper limit structure 1 includes a limiting slide 103, a primary connecting rod 101, a secondary connecting rod 102, a clamping fixing member 108, a connecting sliding point, etc.

[0055] In a further embodiment of the utility model, the screw holes 210 on both sides of the main body of the frame limit structure 2 are installed on the frame by screws, and the screw holes at both ends of the limit slide 103 of the fan limit structure 1 are installed on the fan body by screws (generally installed in the hardware groove on the lower side of the fan body), and the secondary connecting rod 102 is connected to the slide groove 110 of the limit slide 103 through the first connecting sliding point 104 and slides therein, and the primary connecting rod 101 is connected to the secondary connecting rod 102 through the connecting rotation point 106, and the secondary connecting rod 102 can directly slide and rotate in the slide groove 110 of the limit slide 103, and the primary connecting rod 101 and the secondary connecting rod 102 can rotate relative to each other through the connecting rotation point 106.

[0056] In a further embodiment of the present invention, in the child safety micro-ventilation state (first-level limit): the extended part of the other end of the secondary connecting rod 102, that is, the second connecting rod terminal 107, is clamped with the fixed clamping piece on the limiting slide 103 to form a locked state. The fixed clamping piece is composed of a clamping fixing piece 108, a clamping sliding block 109 and a third spring to ensure that the secondary connecting rod 102 is fixed. One end of the primary connecting rod 101 rotates around the connecting pivot 106, and the second connecting sliding point 105 on the other end of the primary connecting rod 101 moves in the closed-loop slide groove formed by the moving slide groove 208 and the fixed slide groove 209 of the frame mechanism. When the window sash is opened, the window sash drives the limiting slide 103 and the secondary connecting rod 102 to move. The primary connecting rod 101 rotates around the connecting pivot 106 on the secondary connecting rod 102. At the same time, the second connecting sliding point 105 at the other end is locked in the closed slide groove on the frame. Figure 6 Slide from the leftmost position shown in the figure to the rightmost position, forming a small stroke slide to achieve a small angle opening to ensure the child's safety micro-ventilation function.

[0057] In a further embodiment of the utility model, large ventilation state (secondary limit): on the basis of the primary state, the clamping sliding block 109 in the clamping fixing piece 108 installed on the upper limit slide 103 of the window is pushed to the other end with a finger, so that the clamping sliding block 109 is disengaged from the second connecting rod terminal 107, and the window sash continues to be opened. The secondary connecting rod 102 can rotate around the first connecting sliding point 104 and slide in the slide groove 110 of the limiting slide 103. The primary connecting rod 101 and the secondary connecting rod 102 rotate relative to each other. When the primary connecting rod 101 and the secondary connecting rod 102 rotate relative to each other in a straight line, and at the same time, the first connecting sliding point 104 at the other end of the secondary connecting rod 102 slides to the maximum position in the slide groove 110, the window sash is opened to the maximum, reaching the maximum ventilation volume. The clamping slide 109 can automatically return to its original position under the action of the third spring. When the window sash is closed, the secondary connecting rod 102 returns to its original position and contacts with the clamping slide 109, which pushes the clamping slide 109 to compress the third spring to move. When it reaches a certain position, the clamping slide 109 will rebound under the action of the third spring to form an automatic lock. When the window sash is opened again, a child-safe micro-ventilation state will be formed.

[0058] In a further embodiment of the utility model, there is a non-limiting state (disassembly): the sliding member 203 of the frame upper limit structure 2 can slide on the main body of the frame upper limit structure 2. By sliding the sliding member 203 by hand, it can automatically restore to its original position under the action of the first spring 207. When the sliding member 203 moves to the maximum position at the other end, it will contact and lock with the locking button 201 on the main body of the frame upper limit structure 2. At this time, the annular closed slide groove formed by the sliding member 203 and the fixed slide groove 209 is disconnected, the sliding limit fails, and the first connecting sliding point 104 at the other end of the secondary connecting rod 102 forms a free state, and the door can be opened at any angle.

[0059] In a further embodiment of the utility model, the child safety limit is restored again: when the main body locking button 201 on the frame is pressed, the sliding member 203 is disengaged from the locking button 201. After release, the sliding member 203 automatically recovers under the action of the first spring 207, and forms a closed slide groove with the fixed slide groove 209. When the window sash is closed, the second connecting sliding point 105 on the primary connecting rod 101 will push the sliding member 203 to the slope position, causing the sliding member 203 to compress the spring movement. When the second connecting sliding point 105 enters the groove, the sliding member 203 rebounds to its original position under the action of the first spring 207, forming a closed loop, and forming a child safety limit again.

[0060] In a further embodiment of the utility model, the utility model has the characteristics of hidden limit, arbitrary disassembly, low cost, two-level ventilation, controllable ventilation volume, applicable to most window products, on-site installation without affecting product use function, more suitable for product after-sales, etc. The utility model gives priority to child safety limit to ensure safety performance.

[0061] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A concealed double-stage limiter for aluminum-clad wood windows that integrates a detachable and child-safe micro-ventilation limiter, characterized in that: include: A sash upper limit structure (1) and a frame upper limit structure (2), wherein the frame upper limit structure (2) is installed on the window frame, and the sash upper limit structure (1) is installed on the window sash; The window sash upper limit structure (1) comprises: a primary connecting rod (101), a secondary connecting rod (102), a limiting slide (103), a first connecting sliding point (104), a second connecting sliding point (105) and a connecting rotating point (106); the limiting slide (103) is installed on the window sash; a slideway groove (110) is provided on the limiting slide (103); the first connecting sliding point (104) is slidably installed in the slideway groove (110); one end of the secondary connecting rod (102) is rotationally connected to the first connecting sliding point (104); the other end of the secondary connecting rod (102) is rotationally connected to one end of the primary connecting rod (101) via the connecting rotating point (106); the other end of the primary connecting rod (101) is rotationally connected to the second connecting sliding point (105); The frame upper limit structure (2) comprises: a locking button (201), a sliding member (203) and a fixing member (205); the fixing member (205) is installed on the window frame; one end of the top plate of the fixing member (205) is connected to the locking button (201); the other end of the top plate of the fixing member (205) is provided with a fixing slide groove (209); the sliding member (203) is slidably installed on the middle part of the upper surface of the bottom plate of the fixing member (205); a movable slide groove (208) is provided on the side of the sliding member (203) facing the fixing slide groove (209); and a clamping locking groove (204) matching the locking button (201) is provided on the side of the sliding member (203) facing the locking button (201); The second connection sliding point (105) is slidably installed in a sliding assembly groove formed by the fixed sliding groove (209) and the movable sliding groove (208).

2. The hidden double-stage limiting device according to claim 1, characterized in that: The frame upper limit structure (2) further comprises: a slide rail pressing block (202); a slide rail groove (206) is provided on the sliding member (203); the slide rail pressing block (202) is arranged in the slide rail groove (206) and connected to the bottom plate of the fixing member (205).

3. The hidden double-stage limiting device according to claim 2 is characterized in that: The frame limit structure (2) also includes: a first spring (207); at least one spring assembly groove is provided on the sliding member (203); each spring assembly groove is parallel to the slide rail groove (206); each spring assembly groove is provided with a limit baffle portion connected to the fixing member (205); each spring assembly groove is installed with a first spring (207); one end of the first spring (207) is against the limit baffle portion, and the other end of the first spring (207) is against the inner wall of one side of the spring assembly groove close to the fixed slide groove (209).

4. The hidden double-stage limit device according to claim 1, characterized in that: Also includes: Bolt and second spring, the locking button (201) is mounted on the fixing member (205) by means of bolts, the second spring is sleeved on the second spring, one end of the second spring abuts against the upper surface of the bottom plate of the fixing member (205), and the other end of the second spring abuts against the bottom surface of the locking button (201).

5. The hidden double-stage limiting device according to claim 1, characterized in that: Screw holes (210) are provided at both ends of the fixing member (205).

6. The hidden double-stage limiting device according to claim 1, characterized in that: Both ends of the limiting slide (103) are provided with assembly through holes.

7. The hidden double-stage limiting device according to claim 3, characterized in that: The fan upper limit structure (1) also includes: a clamping fixing member (108) and a clamping sliding block (109), wherein the clamping fixing member (108) is installed at the end of the limiting slide plate (103), and the clamping sliding block (109) is slidably installed in the clamping fixing member (108), and the end of the other end of the secondary connecting rod (102) is provided with a second connecting rod terminal (107), when the clamping sliding block (109) is located on a side of the clamping fixing member (108) close to the secondary connecting rod (102), the clamping sliding block (109) limits the second connecting rod terminal (107), and when the clamping sliding block (109) is located on a side of the clamping fixing member (108) away from the secondary connecting rod (102), the second connecting rod terminal (107) can rotate around the first connecting sliding point (104).

8. The hidden double-stage limiting device according to claim 7, characterized in that: The door upper limit structure (1) also includes: a third spring, one end of the third spring abuts against the inner wall of the clamping fixing member (108) away from the secondary connecting rod (102), and the other end of the third spring abuts against the clamping sliding block (109).

9. The hidden double-stage limiting device according to claim 7, characterized in that: When the aluminum-clad wood window is in a closed state, the primary connecting rod (101), the secondary connecting rod (102) and the limiting slide (103) are parallel to each other, the first connecting sliding point (104) is located at one end of the slideway groove (110) away from the clamping fixing piece (108), and the second connecting rod terminal (107) is clamped with the clamping sliding block (109).

10. The hidden double-stage limiting device according to claim 7, characterized in that: The locking button (201) is provided with a snap-fitting portion. When the snap-fitting portion is snap-fitted into the snap-fitting locking groove (204), the plurality of first springs (207) are all in a compressed state, and the second connection sliding point (105) can be moved out of the sliding assembly groove.

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