A micro-ventilation safety limiter for windows

Abstract

The utility model discloses a micro-ventilation safety limiter for windows, comprising a frame fixing seat, a leaf fixing seat and a connecting rod, characterized in that: the frame fixing seat is installed on the frame of the door and window, the leaf fixing seat is installed on the leaf of the door and window, the two ends of the connecting rod are respectively connected to the frame fixing seat and the leaf fixing seat, the frame fixing seat is in an inverted "J" shape when viewed from the side, a sliding block is fixed to the right side of the "J" shape, a gourd-shaped hole and a square dumbbell-shaped hole are arranged on the sliding block, the gourd-shaped hole has two circular holes of different diameters at both ends, the middle part of the gourd-shaped hole is two parallel planes, the distance between the two planes is the same as the diameter of the circular hole at the small end, the square dumbbell-shaped hole has two circular holes of the same diameter at both ends, the middle part of the square dumbbell-shaped hole is two parallel planes, the distance between the two planes is smaller than the diameter of the circular holes at both ends, a round button and a straight pin are installed on the leaf fixing seat, the round button is arranged in the gourd-shaped hole, and the sliding block can slide left and right in the frame fixing seat.

Description

Technical Field

[0001] The invention relates to the field of doors and windows, and in particular to a micro-ventilation safety limiter for windows. Background Art

[0002] Door and window limiters are used on outward-opening glass window sashes to limit the opening angle of the glass window sashes and prevent the glass window sashes from opening excessively, causing certain safety hazards. They are also used in some special positions where the glass window sashes need to be limited to a certain position when opened. As people have higher and higher requirements on the quality of life, they need to realize the full opening and half opening functions of conventional doors and windows. The door and window limiters in the prior art generally have only one limit position, which cannot meet such requirements. In addition, the existing limiters do not have a locking function. Some have a locking function but the unlocking is too simple. Children can open them with their fingernails, which poses a safety hazard to children. There are also side-mounted limiters, which need to be linked with the transmission rod, which is troublesome to install and occupies the locking point and lock seat position, affecting the sealing effect. Summary of the invention

[0003] The invention discloses a micro-ventilation safety limiter for a window, which is used to solve the deficiencies of the prior art.

[0004] To solve the above problems, the technical solution of the present invention is:

[0005] A micro-ventilation safety limiter for a window comprises a frame fixing seat, a leaf fixing seat and a connecting rod, wherein the frame fixing seat is mounted on the frame of the door and window, and the leaf fixing seat is mounted on the leaf of the door and window, and the two ends of the connecting rod are respectively connected to the frame fixing seat and the leaf fixing seat, and the frame fixing seat is in an inverted "J" shape when viewed from the side, and a slider is fixed to the right side of the "J" shape, and a gourd-shaped hole and a square dumbbell-shaped hole are arranged on the slider, and the gourd-shaped hole has two circular holes with different diameters at both ends, and the middle part of the gourd-shaped hole is two parallel planes, and the distance between the two planes is the same as the diameter of the small end circular hole, and the square dumbbell-shaped hole has two circular holes with the same diameter at both ends, and the middle part of the square dumbbell-shaped hole is two parallel planes, and the distance between the two planes is smaller than the diameter of the circular holes at both ends. A round button and a flat pin are installed on the fan fixing seat. The round button is arranged in the gourd-shaped hole, and the flat pin is arranged in the square dumbbell-shaped hole. The flat pin has a cylindrical surface ten, and two corresponding parallel planes ten are arranged on the cylindrical surface ten. The distance between the two parallel planes ten is smaller than the distance between the diameter of the cylindrical surface ten and the parallel planes of the square dumbbell-shaped hole. The diameter of the cylindrical surface ten and the circular hole on the square dumbbell-shaped hole can cooperate in rotation. The round button has two concentrically arranged cylindrical surfaces nine and cylindrical surface ten of different diameters. The cylindrical surface ten can slide in the two parallel planes of the gourd-shaped hole. The cylindrical surface nine is larger than the circular hole diameter of the small end of the gourd-shaped hole and can be installed in the circular hole at the large end of the gourd-shaped hole. The slider can slide left and right in the frame fixing seat.

[0006] The frame fixing seat is fixed and clamped in the C-shaped groove of the frame by a screw locking pin and a locking clip. A scroll torsion spring is arranged between the connecting rod and the fan fixing seat. A limit block is fixed on the left side of the "X" shape of the frame fixing seat.

[0007] The left end of the "J" shape of the frame fixing seat is provided with a conical hole 1 and a U-shaped groove 1, the outer side is two vertical ears 3, the inner side of the "J" shape and two planes 1 are located on both sides of the opening of the U-shaped groove 1, the middle of the "J" shape is provided with a cylindrical hole 1, a conical hole 1, a U-shaped groove 1, and a plane 1 located on the left side of the "J" shape, the right side of the "J" shape is a sideways U-shaped groove, the U groove opening is on the inside, there are two cylindrical holes 2, a cylindrical hole 3 and a cylindrical hole 4 on the plane 2 above the right side of the frame fixing seat, the bottom of the frame fixing seat is provided with a "I"-shaped plane located directly below the U-groove 1, and there is a "I"-shaped plane in the middle A Y-shaped convex rib, a vertical ear 1 is arranged right behind the Y-shaped convex rib, a Y-shaped pit is arranged on the back of the Y-shaped convex rib, the inner and outer sides of the Y-shaped pit are of unequal lengths, an oblique ear 1 and a D-shaped hole 1 are arranged behind the short side, a D-shaped hole 2 is arranged at one of the vertical ears, a vertical ear 1 with a hook and a vertical ear 2 are arranged at the right end of the frame fixing seat, the two sides of the vertical ear 1 with a hook can be positioned in the C groove of the frame, the tail hook of the vertical ear 1 with a hook can hook the groove body to prevent it from falling out, the vertical ear 2 seals the end opening, and there are two cylindrical holes 8 in front of the Y-shaped pit, which are respectively concentric with the semicircular arcs of the conical hole 1 and the U-shaped groove 1, and the U-shaped groove 1 of the frame fixing seat is slidably matched with the clearance of the rolling sleeve.

[0008] The concentric clearance of the rolling sleeve is matched with a connecting rod limit pin, and the connecting rod limit pin is provided with cylindrical surface four, cylindrical surface five, cylindrical surface six and cylindrical pit two in sequence, the rolling sleeve is provided with cylindrical surface seven, plane four and cylindrical hole fifteen, the sound-proof rubber pad is provided with cylindrical surface eight, plane five and cylindrical hole sixteen, and the sound-proof rubber pad is located between the rolling sleeve and the frame fixing seat.

[0009] The connecting rod is a waist-shaped flat plate with semicircular arcs 2 and 3 at the front and rear ends. There is a cylindrical hole 13 and a spherical convex hull at the front end, a cylindrical hole 14 at the rear end, and a spherical pit on the back directly below the spherical convex hull. The connecting rod is also provided with direction markings L and R. The cylindrical hole 14 is concentrically matched with the cylindrical surface 6, the cylindrical surface 5 is concentric with the cylindrical hole 15, the plane 4 is flush with the lower plane of the connecting rod, the rolling sleeve slides in the U-shaped groove 1, the cylindrical surface 4 of the connecting rod limit pin is concentrically matched with the cylindrical surface 7 of the rolling sleeve, the cylindrical surface 7 can slide in the U-shaped groove 1 of the frame fixing seat, and can also hit the slider to force the slider to retreat when the window sash is closed, allowing it to enter the sliding groove smoothly. The straight pin is riveted in the cylindrical hole 3 of the frame fixing seat, and the straight pin is sequentially provided with a cylindrical surface 9, a cylindrical surface 10, a cylindrical surface 11 and a straight groove.

[0010] The front end of the slider is triangular, with a U-shaped groove in the middle, and a triangular pit and a straight-line pit on the front, which are symmetrically distributed on both sides of the U-groove, and the straight-line pit is distributed on the plane five behind the U-shaped groove. There are four strip holes behind the straight-line pit, of which two elliptical holes one and an elliptical hole two are arranged front and back on the right, a gourd-shaped hole is on the left front, and a dumbbell-shaped hole is on the left rear. There are two planes six and a waist-shaped pit one on the back of the slider, which are respectively located on the left and right sides of the U-groove, a U-shaped pit one is located directly below the U-groove, a straight-line pit is located in the center of the slider, a gourd-shaped groove one is located directly below the gourd-shaped hole, and two straight-line notches are symmetrically distributed on the left and right sides of the dumbbell-shaped hole, a U-shaped pit two is located behind the straight-line pit, and the U-shaped pit two extends all the way to the tail of the slider, a column spring is installed in the straight-line pit, and plane five is attached to the upper inner wall of the U-shaped groove of the rear half of the flat frame fixing seat, and the slider can move forward under the elastic force of the column spring.

[0011] A tower spring is arranged at the lower part of the round button. The round button has a cylindrical surface nine, a cylindrical surface ten, a plane nine and a cylindrical pit three. The small head of the tower spring is fixed in the cylindrical pit three of the round button. The large head of the tower spring is attached to the lower surface of the U-shaped groove at the rear part of the flat frame fixing block. The round button and the cylindrical hole four of the frame fixing seat are concentrically fitted with clearance for sliding.

[0012] The fan fixing seat has two oblique ears 2, each oblique ear 2 has a semicircular arc 1 at both ends, and the front and rear ends of each oblique ear 2 are symmetrically distributed with a cone 3, a cylindrical hole 9, a cylindrical hole 10, a threaded cylindrical hole and a J-shaped lug. There is a cylindrical hole 11 in the middle of the fan fixing seat. The cone 3 is concentric with the cylindrical hole 9. The connecting rod is riveted to the cylindrical hole 11 of the fan fixing seat with a connecting rod fixing pin. There are three scroll ring surfaces on the scroll torsion spring that are arranged side by side on the same horizontal plane, and a 90 The 90-degree bent ear one is bent downward, and the 90-degree bent ear two is bent upward. The 90-degree bent ear one hooks the cylindrical hole ten of the fan fixing plate, and the 90-degree bent ear two hooks the connecting rod and is flush with its side surface. A hexagonal top screw is installed on the fan fixing seat. The hexagonal top screw has a flat surface three, a threaded cylindrical surface and a hexagonal pit. The threaded cylindrical surface is concentrically meshed with the threaded cylindrical hole. The inclined surface of the oblique ear two can prevent the connecting rod from swinging upward, and the spherical convex hull of the connecting rod contacts the horizontal surface of the fan fixing seat to prevent the connecting rod from swinging downward.

[0013] The cylindrical surface 1 of the connecting rod is used to install the connecting rod fixing pin, and the connecting rod fixing pin is provided with cylindrical surface 1, cylindrical surface 2, cylindrical surface 3 and cylindrical pit 1. The two J-shaped lugs of the fan fixing seat and the C-shaped groove of the fan are in clearance sliding fit.

[0014] The beneficial effects of the present invention are: all riveted methods are adopted to avoid defects such as cracks, stress concentration, brittle fracture, intergranular corrosion, etc. in welding. The linkage can be achieved through handle operation, and the loading and unloading is convenient, and it will not affect the original opening and locking functions of the window, which is convenient for customers to add or remove according to needs. The accessories can make the window in two states: half-open and fully open. When half-open, ventilation can be achieved; when fully open, the window sashes are all opened, and a safety lock is provided to lock the full half-open accessories so that it can only be in a half-open state, providing safety protection for children and bringing convenience and comfort to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of an assembly of an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of the assembly of the frame fixing seat assembly and the profile according to an embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the assembly of the fan fixing seat assembly and the profile according to an embodiment of the present invention;

[0018] Figure 4 The assembly stereogram of the embodiment of the present invention Figure 1 ;

[0019] Figure 5 The assembly stereogram of the embodiment of the present invention Figure 2 ;

[0020] Figure 6 The frame fixing seat of the embodiment of the present invention is assembled into a three-dimensional Figure 1 ;

[0021] Figure 7 The frame fixing seat of the embodiment of the present invention is assembled into a three-dimensional Figure 2 ;

[0022] Figure 8 A three-dimensional diagram of a fan fixing seat according to an embodiment of the present invention;

[0023] Fig. 9 A side view of a fan fixing seat according to an embodiment of the present invention;

[0024] Fig.10 The connecting rod of the embodiment of the present invention is a three-dimensional Figure 1 ;

[0025] Fig.11 The connecting rod of the embodiment of the present invention is a three-dimensional Figure 2 ;

[0026] Fig.12 A three-dimensional diagram of a connecting rod stop pin according to an embodiment of the present invention;

[0027] Fig.13 A three-dimensional diagram of a scroll torsion spring according to an embodiment of the present invention;

[0028] Fig.14 A three-dimensional diagram of a hexagonal screw according to an embodiment of the present invention;

[0029] Fig.15 A three-dimensional diagram of a connecting rod fixing pin according to an embodiment of the present invention;

[0030] Fig.16 A three-dimensional diagram of a rolling sleeve according to an embodiment of the present invention;

[0031] Fig.17 A three-dimensional diagram of a flat pad according to an embodiment of the present invention;

[0032] Fig.18 The slider of the embodiment of the present invention is three-dimensional Figure 1 ;

[0033] Fig.19 The slider of the embodiment of the present invention is three-dimensional Figure 2 ;

[0034] Fig. 20 A three-dimensional diagram of a locking pin according to an embodiment of the present invention;

[0035] Fig.21 The round button three-dimensional Figure 1 ;

[0036] Fig. 22 The round button three-dimensional Figure 2 ;

[0037] Fig.23 A three-dimensional diagram of a straight pin according to an embodiment of the present invention;

[0038] Fig.24 A three-dimensional diagram of a pin sleeve according to an embodiment of the present invention;

[0039] Fig.25 A three-dimensional diagram of a rivet pin according to an embodiment of the present invention;

[0040] Fig.26 A three-dimensional diagram of a locking clip according to an embodiment of the present invention;

[0041] Fig. 27 The limiting block of the embodiment of the present invention is three-dimensional Figure 1 ;

[0042] Fig.28 The limiting block of the embodiment of the present invention is three-dimensional Figure 2 .

[0043] In the figure: 1-frame fixing seat, 101-conical hole 1, 102-U-shaped groove 1, 103-plane 1, 104-cylindrical hole 1, 105-cylindrical hole 2, 106-plane 2, 107-vertical ear 1, 108-cylindrical hole 3, 109-cylindrical hole 4, 110-Y-shaped convex rib, 111-Y-shaped pit, 112-oblique ear 1, 113-D-shaped hole 1, 114-cylindrical hole 7, 115-cylindrical step 1, 116-vertical ear with hook 1, 117-vertical ear 2, 118-D-shaped hole 2, 119-vertical ear 3, 120-cylindrical hole 8, 121-conical hole 2, 2-fan fixing seat, 201-oblique ear 2, 202-semicircle arc 1, 203-conical 3, 204-cylindrical hole 9, 205-cylindrical hole 10, 206-circular Column hole 11, 207-threaded column hole, 208-J-shaped lug, 3-connecting rod, 301-semicircular arc 2, 302-cylindrical hole 13, 303-spherical convex hull, 304-cylindrical hole 14, 305-semicircular arc 3, 306-spherical pit, 307-indicator L, 308-indicator R, 4-connecting rod fixing pin, 401-cylindrical surface 1, 402-cylindrical surface 2, 403-cylindrical surface 3, 404-cylindrical pit 1, 5-scroll torsion spring, 501-scroll annular surface, 502-90 degree bent ear 1, 503-90 degree bent ear 2, 6-hexagonal top screw, 601-plane 3, 602-threaded cylindrical surface, 7-connecting rod limit pin, 701-cylindrical surface 4, 702-cylindrical surface 5, 703-cylindrical surface 6, 704-cylindrical pit 2. 8-roller sleeve, 801-cylindrical surface 7, 802-plane 4, 803-cylindrical hole 15, 9-silent rubber pad, 901-cylindrical surface 8, 902-plane 5, 903-cylindrical hole 16, 10-slider, 1001-triangular pit, 1002-line pit, 1003-elliptical hole 1, 1004-plane 5, 1005-elliptical hole 2, 1006-gourd-shaped hole, 1007-dumbbell-shaped hole, 1009-plane 6, 1010-waist-shaped pit 1, 1011-U-shaped pit 1, 1012-line pit, 1013-gourd-shaped groove 1, 1014-line notch, 1015-U-shaped pit 2, 11-locking pin, 1101-plane 7, 1102-cylindrical step 9, 1103-six Angular step, 1104-plane eight, 1105-slotted groove, 1106-hexagonal sink two, 12-round button, 1201-cylindrical surface nine, 1202-cylindrical surface ten, 1203-plane nine, 1204-cylindrical pit three, 13-slotted pin, 1301-cylindrical surface eleven, 1302-cylindrical surface twelve, 1303-cylindrical surface thirteen, 1304-slotted groove, 1305-plane ten, 14-pin sleeve, 1401-cylindrical surface fourteen, 1402-cylindrical hole eighteen, 15-rivet pin, 1501-cylindrical surface fifteen, 1502-cylindrical surface sixteen, 1503-plane eleven, 16-column spring, 17-locking clip, 1701-plane twelve, 1702-arc surface one, 1703-hexagonal hole,1704- inclined plane 1, 1705- horseshoe-shaped boss, 18- limit block, 1801- conical hole 4, 1802- cylindrical hole 19, 1803- plane 13, 1804- gourd-shaped groove 2, 1805- plane 14, 1806- arc surface 2, 1807- semi-cylindrical hole, 1808- cylindrical hole 20, 1809- inclined plane 2, 1810- straight-line boss, 19- tower spring, 20- frame, 21- fan. DETAILED DESCRIPTION

[0044] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0045] See attached Figures 1 to 28 The present invention comprises a frame fixing seat 1, a leaf fixing seat 2 and a connecting rod 3. The frame fixing seat 1 is installed on the frame 20 of the door and window, and the leaf fixing seat 2 is installed on the leaf 21 of the door and window. The two ends of the connecting rod 3 are respectively connected to the frame fixing seat 1 and the leaf fixing seat 2. The frame fixing seat 1 is in the shape of an inverted "J" when viewed from the side. A slider 10 is fixed on the right side of the "J" shape. The slider 10 is provided with a gourd-shaped hole 1006 and a square dumbbell-shaped hole 1007. The gourd-shaped hole 1006 has two circular holes with different diameters at both ends. The middle part of the gourd-shaped hole 1006 is two parallel planes. The distance between the two planes is the same as the diameter of the circular hole at the small end. The square dumbbell-shaped hole 1007 has two circular holes with the same diameter at both ends. The middle part of the square dumbbell-shaped hole 1007 is two parallel planes. The distance between the two planes is smaller than the diameter of the circular holes at both ends. A round button 12 and a straight pin 13 are installed on the leaf fixing seat 2. The round button 12 is arranged in the gourd-shaped hole 1006, and the straight pin 13 is arranged in the square dumbbell-shaped hole 1007. The straight pin 13 has a cylindrical surface 1302, and the cylindrical surface 1302 is provided with two corresponding parallel planes 1305. The distance between the two parallel planes 1305 is smaller than the distance between the diameter of the cylindrical surface 1302 and the parallel planes of the square dumbbell-shaped hole. The diameter of the cylindrical surface 1302 and the circular hole on the square dumbbell-shaped hole 1007 can cooperate to rotate. The round button 12 has two concentrically arranged cylindrical surfaces 1201 and cylindrical surfaces 1202 of different diameters. The cylindrical surface 1202 can slide in the two parallel planes of the gourd-shaped hole 1006. The cylindrical surface 1201 is larger than the circular hole diameter of the small end of the gourd-shaped hole 1006 and can be installed in the circular hole of the large end of the gourd-shaped hole 1006. The slider 10 can slide left and right in the frame fixing seat 1.

[0046] The frame fixing seat 1 is fixed and clamped in the C-shaped groove of the frame 20 by means of a screw locking pin 11 and a locking clip 17. A scroll torsion spring 5 is arranged between the connecting rod 3 and the fan fixing seat 2. A limit block 18 is fixed to the left side of the "X" shape of the frame fixing seat 1.

[0047] The left end of the "J" shape of the frame fixing seat 1 has a conical hole 101 and a U-shaped groove 102 on the upper side, the outer side is two vertical ears 119, the inner side of the "J" shape and located on both sides of the opening of the U-shaped groove 102 have two planes 103, a cylindrical hole 104 is in the middle of the "J" shape, the conical hole 101, the U-shaped groove 102, and the plane 103 are located on the left side of the "J" shape, and the right side of the "J" shape is a sideways U-shaped groove, and the U groove opens on the inside, and there are two cylindrical holes 105, a cylindrical hole 3 108 and a cylindrical hole 4 109 on the plane 2 102 on the right side of the frame fixing seat 1, and there is a "I" plane located directly below the U groove 102 below the frame fixing seat 1, and there is a Y-shaped convex rib 110 in the middle of the "I" plane, and the Y-shaped There is a vertical ear 107 directly behind the convex rib 110, and a Y-shaped pit 111 is on the back of the Y-shaped convex rib 110. The inner and outer sides of the Y-shaped pit 111 are of unequal length. There is an oblique ear 112 and a D-shaped hole 113 behind the short side. There is a D-shaped hole 118 at the vertical ear 107. The right end of the frame fixing seat 1 has a vertical ear 116 with a hook and a vertical ear 117. The two sides of the vertical ear 116 with a hook can be positioned in the C groove of the frame 20. The tail hook of the vertical ear 116 with a hook can hook the groove body to prevent it from falling out. The vertical ear 117 seals the open end. There are two cylindrical holes 120 in front of the Y-shaped pit 111, which are concentric with the semicircular arcs of the tapered hole 101 and the U-shaped groove 102 respectively. The U-shaped groove 102 of the frame fixing seat 1 and the rolling sleeve 8 are slidingly matched with each other.

[0048] The rolling sleeve 8 is provided with a connecting rod limit pin 7 in a concentric clearance, and a cylindrical surface four 701, a cylindrical surface five 702, a cylindrical surface six 703 and a cylindrical pit two 704 are arranged on the connecting rod limit pin 7 in sequence; a cylindrical surface seven 801, a plane four 802 and a cylindrical hole fifteen 803 are arranged on the rolling sleeve 8; a cylindrical surface eight 901, a plane five 902 and a cylindrical hole sixteen 903 are arranged on the sound-proof rubber pad 9; and the sound-proof rubber pad 9 is located between the rolling sleeve 8 and the frame fixing seat 1.

[0049] The connecting rod 3 is a waist-shaped flat plate, with semicircular arc 2 301 and semicircular arc 3 305 at the front and rear ends, a cylindrical hole 13 302 and a spherical convex hull 303 at the front end, a cylindrical hole 14 304 at the rear end, and a spherical pit 306 at the back end located directly below the spherical convex hull 303. The connecting rod 3 is also provided with direction markings indicating L307 and R308. The cylindrical hole 14 304 is concentrically matched with the cylindrical surface 6 703, the cylindrical surface 5 702 is concentric with the cylindrical hole 15 803, and the plane 4 802 is flush with the lower plane of the connecting rod 3. The roller sleeve 8 slides in the U-shaped groove 102, and the cylindrical surface 4 701 of the connecting rod limit pin 7 is matched with the cylindrical surface 7 801 of the roller sleeve 8 in a concentric clearance. The cylindrical surface 7 801 can slide in the U-shaped groove 102 of the frame fixing seat 1, and can also hit the slider 10 to force the slider 10 to forcibly retreat when the window sash is closed so that it can smoothly enter the slide groove. The straight pin 13 is riveted in the cylindrical hole 3 108 of the frame fixing seat 1, and the straight pin 13 is sequentially provided with a cylindrical surface 9 1301, a cylindrical surface 10 1302, a cylindrical surface 11 1303 and a straight groove 1304.

[0050] The front end of the slider 10 is triangular, with a U-shaped groove in the middle, a triangular pit 1001 and a straight pit 1002 on the front, which are symmetrically distributed on both sides of the U-groove, and the straight pit 1002 is distributed on the plane 5 1004 behind the U-shaped groove. There are four strip holes behind the straight pit 1002, of which two elliptical holes 1003 and elliptical holes 1005 are arranged front and back on the right, a gourd-shaped hole 1006 is on the left front, and a dumbbell-shaped hole 1007 is on the left rear. The back of the slider 10 has two planes 1009 and a waist-shaped pit 1010, which are respectively located on the left and right sides of the U groove. A U-shaped pit 1011 is located directly below the U groove, a straight pit 1012 is located in the center of the slider 10, a gourd-shaped groove 1013 is located directly below the gourd-shaped hole 1006, and two straight notches 1014 are symmetrically distributed on the left and right sides of the dumbbell-shaped hole 1007. There is a U-shaped pit 2 1015 behind the straight pit 1012, and the U-shaped pit 2 1015 extends all the way to the tail of the slider 10. A column spring 16 is installed in the straight pit 1012, and the plane five 1004 is flat against the upper inner wall of the U-shaped groove in the rear half of the flat frame fixing seat 1. Under the elastic force of the column spring 16, the slider 10 can move forward.

[0051] A tower spring 19 is arranged at the lower part of the round button 12. The round button 12 has a cylindrical surface nine 1201, a cylindrical surface ten 1202, a plane nine 1203 and a cylindrical pit three 1204. The small head of the tower spring 19 is fixed in the cylindrical pit three 1204 of the round button 12. The large head of the tower spring 12 is attached to the lower surface of the U-shaped groove at the rear part of the flat frame fixing block 1. The round button 12 and the cylindrical hole four 109 of the frame fixing seat 1 are concentric clearance sliding fit.

[0052] The fan fixing seat 2 has two oblique ears 201, each oblique ear 201 has a semicircular arc 1 202 at both ends, and the fan fixing seat 2 has a cone 3 203, a cylindrical hole 9 204, a cylindrical hole 10 205, a threaded cylindrical hole 207 and a J-shaped lug 208 symmetrically distributed at both ends, and the fan fixing seat 2 has a cylindrical hole 11 206 in the middle, and the cone 3 203 is concentric with the cylindrical hole 9 204. The connecting rod 3 is riveted to the cylindrical hole 11 206 of the fan fixing seat 2 with a connecting rod fixing pin 4. There are three scroll annular surfaces 501 on the scroll torsion spring 5 that are arranged side by side on the same horizontal plane, and a 9 A 0-degree bent ear 502 is bent downward, and a 90-degree bent ear 503 is bent upward. The 90-degree bent ear 502 hooks the cylindrical hole 10 205 of the fan fixing plate 2, and the 90-degree bent ear 2 503 hooks the connecting rod 3 and is flush with its side surface. A hexagonal top screw 6 is installed on the fan fixing seat 2. The hexagonal top screw 6 has a flat surface 3 601, a threaded cylindrical surface 602 and a hexagonal pit 603. The threaded cylindrical surface 602 is concentrically meshed with the threaded cylindrical hole 207. The inclined surface of the inclined ear 201 can prevent the connecting rod 3 from swinging upward, and the spherical convex hull 303 of the connecting rod 3 contacts the horizontal plane of the fan fixing seat 2 to prevent the connecting rod from swinging downward.

[0053] The cylindrical surface 1 401 of the connecting rod 3 is installed with the connecting rod fixing pin 4, and the connecting rod fixing pin 4 has a cylindrical surface 1 401, a cylindrical surface 2 402, a cylindrical surface 3 403 and a cylindrical pit 1 404. The two J-shaped lugs 208 of the fan fixing seat 2 are in a clearance sliding fit with the C-shaped groove of the fan.

[0054] In actual application, the material of the oblique ear 112 comes from the D-shaped hole 113, and the material of the vertical ear 107 comes from the D-shaped hole 118. The rolling friction of the roller sleeve reduces wear. The connecting rod 3 is silent and smooth under the action of the silent rubber pad 9. The U-shaped groove 102 has high strength and can withstand the pulling force in the up, down, left and right directions and the torsion of the limit pin 4. The cylindrical surface 4 701 of the connecting rod limit pin 7 and the cylindrical surface 7 801 of the roller sleeve 8 have concentric clearance fit. The cylindrical surface 7 801 can slide in the U-shaped groove 102 of the frame fixing seat 1, and can also hit the slider 10 to force the slider 10 to forcibly retreat when the window sash is closed, allowing it to smoothly enter the slide groove, thereby realizing the half-open function. The front end has a limiting block 16 and the rear end has a slider 10, all of which are connected by rivets. The locking clip 17 and the frame fixing seat 01 are connected up and down with a silent rubber pad 9, which can not only limit the rotation of the locking clip 17 and buffer the rapid extrusion of the profile by the locking clip 17. The U-shaped groove 102, the D-shaped hole 113, and the D-shaped hole 2118 use a stainless steel half-shear and folding process to maximize the use of edge materials, improve material utilization efficiency, increase material strength, and be economical, energy-saving and environmentally friendly. The small head of the tower spring 19 is fixed in the cylindrical pit 3 1204 of the round button 12, and the large head of the tower spring 12 is flat against the lower surface of the U-shaped groove at the rear of the frame fixing block 1. The tower spring has a large stroke and a stable center of gravity, which is convenient for positioning and assembly. The round button 12 and the cylindrical hole 4 109 of the frame fixing seat 1 are concentric clearance sliding fits. If the slider 10 is slid back for a distance, a crisp snap is heard, indicating that the round button 12 has entered the gourd-shaped hole 1006 of the slider 10, and the slider 10 is locked.When the round button 12 is pressed down, the slider 10 automatically rebounds under the force of the column spring 16, and the flat surface 1305 of the word pin 13 slides with the side surface of the slide groove of the dumbbell-shaped hole 1007 on the slider 10. The locking and unlocking functions can be achieved by rotating the word pin 13. When an adult goes out, the word pin 13 can be rotated 90 degrees to lock the slider 10, so that the limiter can only be half-opened. The word pin 13 is a hidden groove type and is riveted tightly. It must be unlocked with the help of a special tool, and it cannot be unlocked by a child's strength. Then the word pin 13 is rotated 90 degrees to unlock it, so that the slider 10 can be manually pressed back to slide backward. A distance is passed until the round button 12 bounces up and locks the slider 10. At this time, the window is opened to realize the full-open function. The round button 12 is pressed down, and the slider 10 bounces back to the half-open state. The scroll torsion spring 5 is divided into left and right. The figure shows an example of a left torsion spring, which is a mirror image of the right torsion spring. It is not shown, but it should not be used as a limitation to this description. The cylindrical surface 1 401 of the connecting rod 3 is installed with the connecting rod fixing pin 4. The connecting rod fixing pin 4 has a cylindrical surface 1 401, a cylindrical surface 2 402, a cylindrical surface 3 403 and a cylindrical pit 1 404. The two J-shaped lugs 208 of the fan fixing seat 2 are in a clearance sliding fit with the C-shaped groove of the fan. When The window fixing seat 2 slides to a suitable position, and the connecting rod limit pin 7 is located near the cylindrical hole 104 of the frame fixing block 1. The inner hexagonal screw 6 is tightened to close the window sash, forcing the slider 10 to forcibly retreat so that it can smoothly enter the slide groove to achieve the half-open function. When the window sash is opened, the connecting rod limit pin 7 slides forward with the rolling sleeve 8 in the U-shaped groove 102 at the head of the frame fixing seat 1 until it stops at the limit block 18. The limit block 18 has a conical hole 4 1801, a cylindrical hole 19 1802, a plane 13 1803, a gourd-shaped groove 2 1804, a plane 14 1805, an arc surface 2 1806, Semi-cylindrical hole 1807, cylindrical hole 20 1808, inclined surface 2 1809 and straight-line boss 1810; the two sides of the limit block 18 are flat against the two sides of the C-shaped groove of the frame, and the tail hook of the straight-line boss 1810 can hook the groove body to prevent it from slipping out. The rolling sleeve 8 passes through the arc surface 2 1806 and enters the arc of the gourd-shaped groove 2 1804. Since the arc is slightly larger than the rolling sleeve, the gourd hole is larger in front and smaller in the back, and is elastic, and can clamp the cylindrical surface 7 801 of the rolling sleeve 8, thereby supporting the window sash, ensuring ventilation and preventing strong winds from damaging the window. When the window is half-opened, the maximum space is very small, and children cannot pass through, thereby protecting children's safety. The connecting rod 3 is parked in a state of being flat against the side of the inclined ear, and the window sash can be fully opened. When the window sash is opened, the connecting rod is always flat against the side of the inclined ear under the action of the torsion spring and will not be driven.

[0055] The slider 10 and the pin sleeve 14, the pin sleeve 14 and the rivet 15 are in sliding cooperation. After riveting, the slider 10 can slide freely. The column spring 16 on the slider 10 is fixed in the straight groove of the slider 10. The column spring 16 has a certain elastic force, which can ensure that the pin is automatically pushed up and enters the U-shaped groove of the frame fixing seat after the connecting rod pin enters, so that the window can be half-opened freely. The straight pin can be rotated 90 degrees with a tool, and it can only be half-opened but not fully opened, protecting the safety of children. If you want to keep it in a fully open state, you can also pull it down to the limit position and then twist the straight pin 90 degrees. At this time, the slider cannot be pushed manually and must be unlocked with a tool.

[0056] The above specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A micro-ventilation safety limiter for a window, comprising a frame fixing seat, a sash fixing seat and a connecting rod, characterized in that: The frame fixing seat is installed on the frame of the door and window, and the leaf fixing seat is installed on the leaf of the door and window. The two ends of the connecting rod are respectively connected to the frame fixing seat and the leaf fixing seat. The frame fixing seat is in an inverted "J" shape when viewed from the side. A slider is fixed to the right side of the "J" shape. A gourd-shaped hole and a square dumbbell-shaped hole are provided on the slider. The gourd-shaped hole has two circular holes with different diameters at both ends. The middle part of the gourd-shaped hole is two parallel planes. The distance between the two planes is the same as the diameter of the small end circular hole. The square dumbbell-shaped hole has two circular holes with the same diameter at both ends. The middle part of the square dumbbell-shaped hole is two parallel planes. The distance between the two planes is smaller than the diameter of the circular holes at both ends. A round button and a "S" are installed on the leaf fixing seat. Pin, the round button is arranged in the gourd-shaped hole, the flat pin is arranged in the square dumbbell-shaped hole, the flat pin has a cylindrical surface ten, the cylindrical surface ten is provided with two corresponding parallel planes ten, the distance between the two parallel planes ten is smaller than the distance between the diameter of the cylindrical surface ten and the parallel planes of the square dumbbell-shaped hole, the cylindrical surface ten and the diameter of the circular hole on the square dumbbell-shaped hole can cooperate to rotate, the round button has two concentrically arranged cylindrical surfaces nine and cylindrical surface ten of different diameters, the cylindrical surface ten can slide in the two parallel planes of the gourd-shaped hole, the cylindrical surface nine is larger than the circular hole diameter of the small end of the gourd-shaped hole, and can be installed in the circular hole of the large end of the gourd-shaped hole, and the slider can slide left and right in the frame fixing seat.

2. The micro-ventilation safety limiter for windows according to claim 1, characterized in that: The frame fixing seat is fixed and clamped in the C-shaped groove of the frame by a screw locking pin and a locking clip. A scroll torsion spring is arranged between the connecting rod and the fan fixing seat. A limit block is fixed on the left side of the "X" shape of the frame fixing seat.

3. The window micro-ventilation safety limiter according to claim 1, characterized in that: The left end of the "J" shape of the frame fixing seat is provided with a conical hole 1 and a U-shaped groove 1, the outer side is two vertical ears 3, the inner side of the "J" shape and two planes 1 are located on both sides of the opening of the U-shaped groove 1, the middle of the "J" shape is provided with a cylindrical hole 1, a conical hole 1, a U-shaped groove 1, and a plane 1 located on the left side of the "J" shape, the right side of the "J" shape is a sideways U-shaped groove, the U groove opening is on the inside, there are two cylindrical holes 2, a cylindrical hole 3 and a cylindrical hole 4 on the plane 2 above the right side of the frame fixing seat, the bottom of the frame fixing seat is provided with a "I"-shaped plane located directly below the U-groove 1, and there is a "I"-shaped plane in the middle A Y-shaped convex rib, a vertical ear 1 is arranged right behind the Y-shaped convex rib, a Y-shaped pit is arranged on the back of the Y-shaped convex rib, the inner and outer sides of the Y-shaped pit are of unequal lengths, an oblique ear 1 and a D-shaped hole 1 are arranged behind the short side, a D-shaped hole 2 is arranged at one of the vertical ears, a vertical ear 1 with a hook and a vertical ear 2 are arranged at the right end of the frame fixing seat, the two sides of the vertical ear 1 with a hook can be positioned in the C groove of the frame, the tail hook of the vertical ear 1 with a hook can hook the groove body to prevent it from falling out, the vertical ear 2 seals the end opening, and there are two cylindrical holes 8 in front of the Y-shaped pit, which are respectively concentric with the semicircular arcs of the conical hole 1 and the U-shaped groove 1, and the U-shaped groove 1 of the frame fixing seat is slidably matched with the clearance of the rolling sleeve.

4. The window micro-ventilation safety limiter according to claim 3, characterized in that: The concentric clearance of the rolling sleeve is matched with a connecting rod limit pin, and the connecting rod limit pin is provided with cylindrical surface four, cylindrical surface five, cylindrical surface six and cylindrical pit two in sequence, the rolling sleeve is provided with cylindrical surface seven, plane four and cylindrical hole fifteen, the sound-proof rubber pad is provided with cylindrical surface eight, plane five and cylindrical hole sixteen, and the sound-proof rubber pad is located between the rolling sleeve and the frame fixing seat.

5. The window micro-ventilation safety limiter according to claim 1, characterized in that: The connecting rod is a waist-shaped flat plate with semicircular arcs 2 and 3 at the front and rear ends. There is a cylindrical hole 13 and a spherical convex hull at the front end, a cylindrical hole 14 at the rear end, and a spherical pit on the back directly below the spherical convex hull. The connecting rod is also provided with direction markings L and R. The cylindrical hole 14 is concentrically matched with the cylindrical surface 6, the cylindrical surface 5 is concentric with the cylindrical hole 15, the plane 4 is flush with the lower plane of the connecting rod, the rolling sleeve slides in the U-shaped groove 1, the cylindrical surface 4 of the connecting rod limit pin is concentrically matched with the cylindrical surface 7 of the rolling sleeve, the cylindrical surface 7 can slide in the U-shaped groove 1 of the frame fixing seat, and can also hit the slider to force the slider to retreat when the window sash is closed, allowing it to enter the sliding groove smoothly. The straight pin is riveted in the cylindrical hole 3 of the frame fixing seat, and the straight pin is sequentially provided with a cylindrical surface 9, a cylindrical surface 10, a cylindrical surface 11 and a straight groove.

6. The window micro-ventilation safety limiter according to claim 1, characterized in that: The front end of the slider is triangular, with a U-shaped groove in the middle, and a triangular pit and a straight-line pit on the front, which are symmetrically distributed on both sides of the U-groove, and the straight-line pit is distributed on the plane five behind the U-shaped groove. There are four strip holes behind the straight-line pit, of which two elliptical holes one and an elliptical hole two are arranged front and back on the right, a gourd-shaped hole is on the left front, and a dumbbell-shaped hole is on the left rear. There are two planes six and a waist-shaped pit one on the back of the slider, which are respectively located on the left and right sides of the U-groove, a U-shaped pit one is located directly below the U-groove, a straight-line pit is located in the center of the slider, a gourd-shaped groove one is located directly below the gourd-shaped hole, and two straight-line notches are symmetrically distributed on the left and right sides of the dumbbell-shaped hole, a U-shaped pit two is located behind the straight-line pit, and the U-shaped pit two extends all the way to the tail of the slider, a column spring is installed in the straight-line pit, and plane five is attached to the upper inner wall of the U-shaped groove of the rear half of the flat frame fixing seat, and the slider can move forward under the elastic force of the column spring.

7. The window micro-ventilation safety limiter according to claim 1, characterized in that: A tower spring is arranged at the lower part of the round button. The round button has a cylindrical surface nine, a cylindrical surface ten, a plane nine and a cylindrical pit three. The small head of the tower spring is fixed in the cylindrical pit three of the round button. The large head of the tower spring is attached to the lower surface of the U-shaped groove at the rear part of the flat frame fixing block. The round button and the cylindrical hole four of the frame fixing seat are concentrically fitted with clearance for sliding.

8. The window micro-ventilation safety limiter according to claim 1, characterized in that: The fan fixing seat has two oblique ears 2, each oblique ear 2 has a semicircular arc 1 at both ends, and the front and rear ends of each oblique ear 2 are symmetrically distributed with a cone 3, a cylindrical hole 9, a cylindrical hole 10, a threaded cylindrical hole and a J-shaped lug. There is a cylindrical hole 11 in the middle of the fan fixing seat. The cone 3 is concentric with the cylindrical hole 9. The connecting rod is riveted to the cylindrical hole 11 of the fan fixing seat with a connecting rod fixing pin. There are three scroll ring surfaces on the scroll torsion spring that are arranged side by side on the same horizontal plane, and a 90 The 90-degree bent ear one is bent downward, and the 90-degree bent ear two is bent upward. The 90-degree bent ear one hooks the cylindrical hole ten of the fan fixing plate, and the 90-degree bent ear two hooks the connecting rod and is flush with its side surface. A hexagonal top screw is installed on the fan fixing seat. The hexagonal top screw has a flat surface three, a threaded cylindrical surface and a hexagonal pit. The threaded cylindrical surface is concentrically meshed with the threaded cylindrical hole. The inclined surface of the oblique ear two can prevent the connecting rod from swinging upward, and the spherical convex hull of the connecting rod contacts the horizontal surface of the fan fixing seat to prevent the connecting rod from swinging downward.

9. The window micro-ventilation safety limiter according to claim 1, characterized in that: The cylindrical surface 1 of the connecting rod is used to install the connecting rod fixing pin, and the connecting rod fixing pin is provided with cylindrical surface 1, cylindrical surface 2, cylindrical surface 3 and cylindrical pit 1. The two J-shaped lugs of the fan fixing seat and the C-shaped groove of the fan are in clearance sliding fit.

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