CN212507923U

CN212507923U - Door and window capable of being opened in two ways

Info

Publication number: CN212507923U
Application number: CN202020601477.6U
Authority: CN
Inventors: 阳运洪; 魏戈捷
Original assignee: Sichuan Messea Windows & Doors Co ltd
Current assignee: Sichuan Messea Windows & Doors Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-02-09
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a door and window capable of double inward opening, which comprises a window frame, an inner window sash and an outer window sash, wherein the inner window sash is close to one indoor side, the outer window sash is close to one outdoor side, the inner window sash and the outer window sash are both hinged in the window frame through an inward opening hinge, the outer window sash is a mosquito-proof window sash, and the inner window sash is a glass window sash; the outer window sash comprises an outer window sash frame and a high-transparent anti-mosquito net, the high-transparent anti-mosquito net is installed on the outer window sash frame, a first adhesive tape is arranged on one side, close to the outdoor, of the window frame, when the outer window sash is closed, the outer window sash frame of the outer window sash can be pressed on the first adhesive tape, and a second adhesive tape is arranged on one side, close to the inner window sash, of the outer window sash frame. The door and window can be opened inwards when in use, so that a high-rise drop leaf is avoided, the door and window is more convenient and fast to clean, the body does not need to be explored to clean the leaf surface, and the safety of cleaners is ensured; simultaneously, the utility model discloses still have mosquito-proof effect.

Description

Door and window capable of being opened in two ways

Technical Field

The utility model relates to a door and window that can two internal divisions belongs to door and window technical field.

Background

The door and window is divided into an enclosure member or a partition member according to different positions, the door and window respectively has the functions of heat preservation, heat insulation, sound insulation, water resistance, fire resistance and the like according to different design requirements, the new requirement is energy-saving, and the heat lost by the gap between the door and the window in a cold area accounts for about 25 percent of the total heating heat consumption. The requirement of the tightness of the door and window is an important content in the energy-saving design.

The prior art doors and windows are generally opened outwards, which has the following disadvantages in practical use:

firstly, in a high-rise building, an outward-opening window falls under external force (such as wind blowing) or due to long-term maintenance, so that serious potential safety hazards exist in the use process, and the use is unsafe;

secondly, when a cleaner cleans the sector, force needs to be applied to the window, and the window can fall off due to uneven stress under the action of the force and can fall down;

thirdly, when a cleaner cleans the window at the outer side, most of the cleaner needs to be pulled out of the window, and the cleaner can slip or fall out due to unstable gravity when wiping the sector, thereby causing serious consequences;

fourthly, the window in the prior art is generally a single face, and the purpose of preventing mosquitoes cannot be realized.

Fifthly, when the sector is installed on the sector frame, gluing operation is needed, and gluing is very difficult when the sector is installed on a high-rise building; meanwhile, a drain hole needs to be formed after the adhesive tape is additionally arranged, the adhesive tape is damaged due to drainage, the sealing performance is reduced, and the waterproof performance is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that the window is easy to fall into the window when in use, the use process is unsafe and the window is inconvenient to clean, and provides a door and window which can be opened in two directions, the door and window can be opened in use, the high-rise falling into the window is avoided, the window is more convenient and fast to clean, the body does not need to be explored to clean the window surface, and the safety of a cleaner is ensured; simultaneously, the utility model discloses still have mosquito-proof effect.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a door and window capable of being opened in double directions comprises a window frame, an inner window sash and an outer window sash, wherein the inner window sash is close to one indoor side, the outer window sash is close to one outdoor side, the inner window sash and the outer window sash are both hinged in the window frame through an inwardly opened hinge, the outer window sash is an anti-mosquito window sash, and the inner window sash is a glass window sash; the outer sash comprises an outer sash frame and a high-permeability anti-mosquito net, the high-permeability anti-mosquito net is installed on the outer sash frame, a first adhesive tape is arranged on one side, close to the outdoor, of the window frame, when the outer sash is closed, the outer sash frame of the outer sash can be pressed on the first adhesive tape, and a second adhesive tape is arranged on one side, close to the inner sash, of the outer sash frame; the inner window sash comprises an inner sash frame and a sash surface, the sash surface is arranged in the inner sash frame, and when the inner window sash is closed, the inner sash frame of the inner window sash can be pressed on the second adhesive tape; the inward opening hinge comprises a window frame hinge piece, a window sash hinge piece and a hinge shaft, counter bores and shaft holes are formed in the window frame hinge piece and the window sash hinge piece, the window frame hinge piece and the window sash hinge piece are connected with a window frame, an inner window sash and an outer window sash through screws penetrating through the counter bores, the window frame hinge piece and the window sash hinge piece are connected through the hinge shaft, the window frame hinge piece and the window sash hinge piece can rotate on the hinge shaft after being connected, a first self-positioning structure used for achieving positioning and clamping with the window frame is arranged on the window frame hinge piece, and a second self-positioning structure used for achieving positioning and clamping with the inner window sash and the outer window sash is arranged on the window sash hinge piece.

The fan comprises an inner fan frame, a fan surface and a fan surface, wherein a clamping groove I and a clamping groove II are formed in one side, close to the outdoor side, of the inner fan frame, the clamping groove I is located above the clamping groove II, a polyurethane foaming filler strip is installed in the clamping groove II, a third adhesive tape is connected in the clamping groove I in a clamped mode, the polyurethane foaming filler strip and the third adhesive tape can be in close contact with the fan surface, and glass cement is injected between the polyurethane foaming filler strip and the third adhesive tape; a pressing strip is arranged on one side, close to the indoor side, of the inner fan frame, and the pressing strip can tightly press the fan face on the polyurethane foam cushion strip, the third adhesive tape and the glass adhesive; a fourth adhesive tape is arranged between the pressing strip and the sector; the third adhesive tape is a whole welding adhesive tape and is formed by connecting four independent adhesive tapes end to end.

Further optimization, a cushion block is arranged between the inner fan frame and the fan surface, and the cushion block is made of hard rubber materials.

The third rubber strip is composed of a clamping part and two contact parts connected to the clamping part, the clamping part is used for clamping with the clamping groove I, and the two contact parts are used for tightly contacting with the fan surface; the fourth adhesive tape is provided with a clamping groove used for realizing clamping with the pressing strip, one side opposite to the clamping groove is provided with three first contact parts, and the first contact parts can be in close contact with the fan surface.

The inner fan frame comprises a first fan frame and a second fan frame, the first fan frame comprises a first frame with a hollow interior, a vertical part is arranged on the left side of the first frame, a clamping groove I and a clamping groove II are arranged on the vertical part, and two first dovetail grooves are arranged on the right side of the first frame; the second fan frame comprises a hollow second frame, a second dovetail groove is formed in the position, corresponding to the first dovetail groove, of the left side of the second frame and the first frame, the first frame is connected with the second frame through a connecting portion I and a connecting portion II which are provided with dovetail feet, two first clamping hooks are arranged above the right side of the second frame, and the first clamping hooks are used for being clamped with the pressing strips.

The pressing strip mainly comprises a first vertical part, a first connecting part and a second vertical part, wherein the first vertical part and the second vertical part are parallel to each other; the end part of the first connecting part is provided with an occlusion part which can be matched with the clamping groove.

Further preferably, the lower end of the second frame is provided with an extension part, and a fifth adhesive tape for being tightly attached to the window frame is arranged on the extension part.

Wherein, the window frame hinge piece includes first arc portion, L type connecting portion and oblique portion, the minor face and the first arc portion of L type connecting portion are connected, the long limit and the oblique portion of L type connecting portion are connected, the contained angle that the long limit of oblique portion and L type connecting portion formed is 115 and 125, the notch that the oblique portion formed after being connected with the long limit of L type connecting portion is towards first arc portion, first self-align structure includes first block portion and first arch, first block portion sets up the tip at the oblique portion, first block portion can carry out the block with the recess on the window frame, first arch sets up on L type connecting portion.

The window sash hinge piece comprises a first connecting plate, a second connecting plate, a third connecting plate and a second arc-shaped part, one end of the first connecting plate is connected with the second arc-shaped part, the other end of the first connecting plate is vertically connected onto the second connecting plate, the third connecting plate is obliquely arranged on the second connecting plate, an included angle between the third connecting plate and the second connecting plate is 115-shaped and 125-shaped, the second self-positioning structure comprises a second clamping part and a protrusion, the second clamping part is connected to the end part of the third connecting plate, the second clamping part is used for clamping with a first groove arranged on a window sash, and the protrusion is arranged on the third connecting plate; the first connecting plate is longer than the short side of the L-shaped connecting part.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model has the advantages that the inner window sash and the outer window sash are arranged, and the purpose of inward opening can be realized under the action of the inner opening and closing leaf, so that the outward opening of the window is avoided in the actual use, and the problem of falling of the high-rise window can be avoided; meanwhile, the inner window sash and the outer window sash are in an inward opening mode, when the sector on one side outside the chamber is cleaned, the body does not need to be explored, the sector is more convenient and fast to clean, the sector is safer when being cleaned, and the personal safety of cleaning personnel is guaranteed.

Meanwhile, the outer window sash is an anti-mosquito window sash with a gauze, so that the utility model has better anti-mosquito effect; and, through the first adhesive tape, second adhesive tape, the third adhesive tape that set up, fourth adhesive tape, fifth adhesive tape, glass are glued and polyurethane foam filler strip, make the utility model discloses have better leakproofness, can effectually avoid appearing the condition of leaking when using.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the whole structure of the inner window sash of the present invention.

Fig. 3 is a schematic view of the cross-sectional structure of the third rubber strip of the present invention.

Fig. 4 is a schematic view of the cross-sectional structure of the fourth adhesive tape of the present invention.

Fig. 5 is a schematic view of the cross-sectional structure of the fifth adhesive tape of the present invention.

Fig. 6 is a schematic view of the cross-sectional structure of the pressing bar of the present invention.

Fig. 7 is a schematic cross-sectional structure view of the inner fan frame of the present invention.

Fig. 8 is the overall structure of the inward opening hinge of the present invention.

Fig. 9 is a schematic view of the whole structure of the hinge plate of the window frame of the present invention.

Fig. 10 is a schematic view of the whole structure of the sash hinge of the present invention.

Fig. 11 is a front view of fig. 8 according to the present invention.

Fig. 12 is a partially enlarged schematic view of fig. 1 according to the present invention.

Reference numerals:

101, 102, 103, 104, 105, 106, 107, 108, 109 and second adhesive tapes;

201 window frame hinge sheet, 202 first arc-shaped part, 203L-shaped connecting part, 204 inclined part, 205 inclined plane, 206 window sash hinge sheet, 207 first connecting plate, 208 second connecting plate, 209 third connecting plate, 2010 second arc-shaped part, 2011 hinge shaft, 2012 first self-positioning structure, 2013 first clamping part, 2014 first protrusion, 2015 second self-positioning structure, 2016 second clamping part, 2017 protrusion, 2018 groove and 2019 first groove;

301 sector, 302 inner sector frame, 303 slot i, 304 slot ii, 305 polyurethane foam cushion strip, 306 third adhesive tape, 307 clamping part, 308 contact part, 309 glass adhesive, 3010 pressing strip, 3011 fourth adhesive tape, 3012 first contact part, 3013 clamping groove, 3014 cushion block, 3015 first sector frame, 3016 first frame, 3017 vertical part, 3018 first dovetail groove, 3019 second sector frame, 3020 second frame, 3021 first trip, 3022 second dovetail groove, 3023 connecting part i, 3024 connecting part ii, 3025 first vertical part, 3026 first connecting part, 3027 second vertical part, 3028 arc connecting part, 3029 second trip, 3030 engaging part, 3031 extending part, 3032 fifth adhesive tape.

Detailed Description

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The embodiment discloses a door and window capable of being opened in two directions, which comprises a window frame 101, an inner window sash 102 and an outer window sash 104, wherein the inner window sash 102 is close to one indoor side, the outer window sash 104 is close to one outdoor side, the inner window sash 102 and the outer window sash 104 are both hinged in the window frame 101 through an inwardly opened hinge 107, the outer window sash 104 is an anti-mosquito window sash, and the inner window sash 102 is a glass window sash;

the outer sash 104 comprises an outer sash frame 105 and a high-transmittance mosquito-proof net 106, the high-transmittance mosquito-proof net 106 is arranged on the outer sash frame 105, a first adhesive tape 108 is arranged on one side, close to the outdoor, of the window frame 101, when the outer sash 104 is closed, the outer sash frame 105 of the outer sash 104 can be pressed on the first adhesive tape 108, and a second adhesive tape 109 is arranged on one side, close to the inner sash 102, of the outer sash frame 105; the outer sash frame 105 is connected with the window frame 101 through an inner opening hinge 107;

the inner window sash 102 comprises an inner sash frame 302 and a sash 301, the sash 301 is installed in the inner sash frame 302, and when the inner window sash 102 is closed, the inner sash frame 302 of the inner window sash 102 can be pressed on the second adhesive tape 109; the inner sash frame 302 is connected with the window frame 101 through an inner opening hinge 107;

the inward opening hinge 107 comprises a window frame hinge sheet 201, a window sash hinge sheet 206 and a hinge shaft 2011, counter bores and shaft holes are formed in the window frame hinge sheet 201 and the window sash hinge sheet 206, the window frame hinge sheet 201 and the window sash hinge sheet 206 are connected with the window frame 101, the inner window sash 102 and the outer window sash 104 through screws penetrating through the counter bores, the window frame hinge sheet 201 and the window sash hinge sheet 206 are connected through the hinge shaft 2011, the connected window frame hinge sheet 201 and the connected window sash hinge sheet 206 can rotate on the hinge shaft 2011, a first self-positioning structure 2012 used for achieving positioning and clamping with the window frame 101 is arranged on the window frame hinge sheet 201, and a second self-positioning structure 2015 used for achieving positioning and clamping with the inner window sash 102 and the outer window sash 104 is arranged on the window sash hinge sheet 206.

For further refinement, the window frame hinge sheet 201 includes a first arc-shaped portion 202, an L-shaped connecting portion 203 and a tilted portion 204, a short side of the L-shaped connecting portion 203 is connected to the first arc-shaped portion 202, a long side of the L-shaped connecting portion 203 is connected to the tilted portion 204, an included angle formed between the tilted portion 204 and the long side of the L-shaped connecting portion 203 is 115 + 125 °, a notch formed after the tilted portion 204 is connected to the long side of the L-shaped connecting portion 203 faces the first arc-shaped portion 202, the first self-positioning structure 2012 includes a first engaging portion 2013 and a first protrusion 2014, the first engaging portion 2013 is disposed at an end of the tilted portion 204, the first engaging portion 2013 can engage with a groove 2018 on the window frame 101, and the first protrusion 2014 is disposed on the L-shaped connecting portion 203.

The sash hinge piece 206 comprises a first connecting plate 207, a second connecting plate 208, a third connecting plate 209 and a second arc-shaped part 2010, one end of the first connecting plate 207 is connected with the second arc-shaped part 2010, the other end of the first connecting plate is vertically connected with the second connecting plate 208, the third connecting plate 209 is obliquely arranged on the second connecting plate 208, an included angle between the third connecting plate 209 and the second connecting plate 208 is 115 + 125 degrees, a second self-positioning structure 2015 comprises a second clamping part 2016 and a protrusion 2017, the second clamping part 2016 is connected with the end part of the third connecting plate 209 and is used for clamping with a first groove 2019 arranged on a sash, and the protrusion 2017 is arranged on the third connecting plate 209; the first connecting plate 207 has a length greater than the short side of the L-shaped connecting portion 203.

In this embodiment, an included angle formed by the inclined portion 204 and the long side of the L-shaped connecting portion 203 is 119 °, and an included angle between the third connecting plate 209 and the second connecting plate 208 is 119 °, so that the structures of the window frame hinge sheet 201 and the window sash hinge sheet 206 can be more stable, and the stress performance can be ensured.

Further optimally, in practical use, the L-shaped connecting portion 203 is provided with an inclined surface 205, and a retreat region is formed in the process of opening the inner sash 102 or the outer sash 104 by the inclined surface 205, so as to ensure normal opening of the sash.

Therefore, in actual use, the purposes of positioning and limiting can be achieved during installation through the first self-positioning structure 2012 and the second self-positioning structure 2015, and the installation is more convenient; the first clamping part 2013 in the first self-positioning structure 2012 is clamped with the groove 2018 on the window frame 101, the second clamping part 2016 in the second self-positioning structure 2015 is clamped with the first groove 2019 arranged on the inner sash 102 or the outer sash 104, the limit of the window frame hinge sheet 201 and the window sash hinge sheet 206 can be realized, and an anti-falling structure is added on the basis of screw fixation, so that the safety performance of the mounted window is better; meanwhile, the window frame hinge sheet 201 and the window sash hinge sheet 206 are more stable in structure and have stronger bearing capacity.

The first protrusion 2014 can be attached to the window frame 101, and the protrusion 2017 is attached to the window sashes (the inner window sash 102 and the outer window sash 104), which is shown in fig. 12 in the specification; after the first clamping portion 2013 is clamped with the groove 2018 in the window frame 101 and the second clamping portion 2016 is clamped with the first groove 2019 in the window sash, the first clamping portion 2013 and the second clamping portion 2016 are prevented from being disengaged, so that the first clamping portion 2013 and the second clamping portion 2016 are limited and fixed, an independent anti-falling structure is formed, and the stress capacity is improved.

A clamping groove I303 and a clamping groove II 304 are arranged on one side, close to the outdoor side, of the inner fan frame 302, the clamping groove I303 is located above the clamping groove II 304, a polyurethane foam pad strip 305 is installed in the clamping groove II 304, a third adhesive tape 306 is connected in the clamping groove I303 in a clamping mode, the polyurethane foam pad strip 305 and the third adhesive tape 306 can be in close contact with the fan surface 301, and glass cement 309 is injected between the polyurethane foam pad strip 305 and the third adhesive tape 306; a pressing strip 3010 is arranged on one side, close to the indoor, of the inner fan frame 302, and the pressing strip 3010 can tightly press the fan surface 301 on the polyurethane foam cushion strip 305, the third rubber strip 306 and the glass cement 309; a fourth adhesive tape 3011 is arranged between the pressing strip 3010 and the sector 301; the third adhesive tape 306 is a whole welding adhesive tape and is formed by connecting four independent adhesive tapes end to end.

In practical use, the gap between the sector 301 and the inner sash frame 302 is sealed by the third rubber strip 306, the glass cement 309 and the polyurethane foam gasket 305, and the glass cement 309 is glued before installation, so that the sector 301 is tightly pressed on the third rubber strip 306, the glass cement 309 and the polyurethane foam gasket 305 under the action of the pressing strip 3010 to form a three-layer sealing structure, thereby avoiding the water leakage; the utility model does not need to glue on the installation site, but adopts a pre-gluing mode, namely gluing is carried out before installation, and a high-rise outdoor gluing mode is not needed to seal the gap between the sector 301 and the inner fan frame 302; sealing of the indoor side is achieved at the indoor side by the fourth glue strip 3011.

More importantly, the third adhesive tape 306 is a whole welding adhesive tape and is formed by welding four independent adhesive tapes end to end; therefore, the third rubber strip 306 forms a whole, the purpose of seamless connection is achieved, and the sealing performance can be further improved in actual use.

Preferably, a cushion block 3014 is arranged between the inner fan frame 302 and the fan surface 301, and the cushion block 3014 is made of hard rubber material; therefore, a buffer structure is arranged between the sector 301 and the inner sector frame 302, the sector 301 and the inner sector frame 302 can be prevented from being in direct hard contact, the sector 301 can be prevented from being damaged due to the fact that the inner sector frame 302 extrudes the sector 301, and the sector 301 can be effectively protected.

In this embodiment, the third adhesive tape 306 is composed of an engaging portion 307 and two contact portions 308 connected to the engaging portion 307, the engaging portion 307 is used for engaging with the slot i 303, and the two contact portions 308 are used for tightly contacting with the sector 301; fix third adhesive tape 306 through the block of block portion 307 with draw-in groove I303, then play waterproof, leak protection purpose through two contact site 308 and sector 301 in close contact with, contact site 308 has two for third adhesive tape 306 has two sealed points when contacting with sector 301, and then improves sealed effect.

The fourth adhesive tape 3011 is provided with a clamping groove 3013 for clamping with the bead 3010, three first contact portions 3012 are provided on the opposite side of the clamping groove 3013, and the first contact portions 3012 can be in close contact with the fan surface 301; thus, under the action of the batten 3010, the first contact part 3012 can be tightly pressed on the sector 301 to form three sealing gaskets, so as to improve the sealing performance of the inner side.

In this embodiment, the inner fan frame 302 includes a first fan frame 3015 and a second fan frame 3019, the first fan frame 3015 includes a first frame 3016 with a hollow interior, a vertical portion 3017 is disposed on the left side of the first frame 3016, a first slot i 303 and a second slot ii 304 are disposed on the vertical portion 3017, and two first dovetail slots 3018 are disposed on the right side of the first frame 3016; the second fan frame 3019 includes a second frame 3020 with a hollow interior, a second dovetail groove 3022 is provided at a position corresponding to a first dovetail groove 3018 provided on the first frame 3016 on the left side of the second frame 3020, the first frame 3016 and the second frame 3020 are connected through a connection portion i 3023 and a connection portion ii 3024 provided with dovetail pins, two first hooks 3021 are provided above the right side of the second frame 3020, and the first hooks 3021 are used for being engaged with the trim 3010.

The pressing strip 3010 mainly comprises a first vertical portion 3025, a first connecting portion 3026 and a second vertical portion 3027, the first vertical portion 3025 and the second vertical portion 3027 are parallel to each other, the first vertical portion 3025 is vertically connected to the first connecting portion 3026, the second vertical portion 3027 is connected to the first connecting portion 3026 through an arc-shaped connecting portion 3028, and the first vertical portion 3025 and the second vertical portion 3027 are provided with a second hook 3029 capable of being engaged with the first hook 3021; an engaging portion 3030 engageable with the engaging groove 3013 is provided at an end of the first connecting portion 3026.

Like this, can make layering 3010 have better elastic deformation ability, in the in-service use, realize the fixed of layering 3010 through the block of first trip 3021 with second trip 3029, because the structure of layering 3010 is so, make it can have better elasticity, can carry out the chucking with sector 301 fixed, and then make fourth adhesive tape 3011 tightly press on sector 301, the opposite side of sector 301 carries out in close contact with polyurethane foam backing strip 305, third adhesive tape 306 and glass and glues 309.

Preferably, an extension portion 3031 is arranged at the lower end of the second frame 3020, and a fifth adhesive tape 3032 for closely adhering to the window frame 101 is arranged on the extension portion 3031; in this way, when the window is closed, the fifth adhesive tape 3032 can tightly press the window frame 101, so that the inner sash frame 302 is sealed with the window frame 101, and the situation that water leaks from the gap between the inner sash frame 302 and the window frame 101 is avoided.

Note that the sector 301 is made of tempered glass.

In this embodiment, the second glue strip 109 has the same structure as the fifth glue strip 3032.

Example 2

This embodiment is substantially the same as embodiment 1, except that: in this embodiment, a fixed window 103 is further provided on the right side of the window frame 101.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.

Claims

1. The utility model provides a door and window that can two internal divisions which characterized in that: the anti-mosquito window comprises a window frame, an inner window sash and an outer window sash, wherein the inner window sash is close to one indoor side, the outer window sash is close to one outdoor side, the inner window sash and the outer window sash are both hinged in the window frame through an internally-opened hinge, the outer window sash is an anti-mosquito window sash, and the inner window sash is a glass window sash;

the outer sash comprises an outer sash frame and a high-permeability anti-mosquito net, the high-permeability anti-mosquito net is installed on the outer sash frame, a first adhesive tape is arranged on one side, close to the outdoor, of the window frame, when the outer sash is closed, the outer sash frame of the outer sash can be pressed on the first adhesive tape, and a second adhesive tape is arranged on one side, close to the inner sash, of the outer sash frame;

the inner window sash comprises an inner sash frame and a sash surface, the sash surface is arranged in the inner sash frame, and when the inner window sash is closed, the inner sash frame of the inner window sash can be pressed on the second adhesive tape;

the inward opening hinge comprises a window frame hinge piece, a window sash hinge piece and a hinge shaft, counter bores and shaft holes are formed in the window frame hinge piece and the window sash hinge piece, the window frame hinge piece and the window sash hinge piece are connected with a window frame, an inner window sash and an outer window sash through screws penetrating through the counter bores, the window frame hinge piece and the window sash hinge piece are connected through the hinge shaft, the window frame hinge piece and the window sash hinge piece can rotate on the hinge shaft after being connected, a first self-positioning structure used for achieving positioning and clamping with the window frame is arranged on the window frame hinge piece, and a second self-positioning structure used for achieving positioning and clamping with the inner window sash and the outer window sash is arranged on the window sash hinge piece.

2. The double inwardly openable door and window of claim 1, wherein: a clamping groove I and a clamping groove II are formed in one side, close to the outdoor side, of the inner fan frame, the clamping groove I is located above the clamping groove II, a polyurethane foam pad strip is installed in the clamping groove II, a third adhesive tape is connected in the clamping groove I in a clamping mode, the polyurethane foam pad strip and the third adhesive tape can be in close contact with the fan surface, and glass cement is injected between the polyurethane foam pad strip and the third adhesive tape; a pressing strip is arranged on one side, close to the indoor side, of the inner fan frame, and the pressing strip can tightly press the fan face on the polyurethane foam cushion strip, the third adhesive tape and the glass adhesive; a fourth adhesive tape is arranged between the pressing strip and the sector; the third adhesive tape is a whole welding adhesive tape and is formed by connecting four independent adhesive tapes end to end.

3. The double inwardly openable door and window of claim 2, wherein: and a cushion block is arranged between the inner fan frame and the fan surface and is made of hard rubber materials.

4. The double inwardly openable door and window of claim 2, wherein: the third adhesive tape is composed of a clamping portion and two contact portions connected to the clamping portion, the clamping portion is used for being clamped with the clamping groove I, and the two contact portions are used for being in close contact with the sector.

5. The double inwardly openable door and window of claim 2, wherein: the fourth adhesive tape is provided with a clamping groove used for clamping with the pressing strip, three first contact parts are arranged on one side opposite to the clamping groove, and the first contact parts can be in close contact with the sector.

6. The double inwardly openable door or window of claim 5, wherein: the inner fan frame comprises a first fan frame and a second fan frame, the first fan frame comprises a first frame with a hollow interior, a vertical part is arranged on the left side of the first frame, a clamping groove I and a clamping groove II are arranged on the vertical part, and two first dovetail grooves are arranged on the right side of the first frame; the second fan frame comprises a hollow second frame, a second dovetail groove is formed in the position, corresponding to the first dovetail groove, of the left side of the second frame and the first frame, the first frame is connected with the second frame through a connecting portion I and a connecting portion II which are provided with dovetail feet, two first clamping hooks are arranged above the right side of the second frame, and the first clamping hooks are used for being clamped with the pressing strips.

7. The double inwardly openable door or window of claim 6, wherein: the pressing strip mainly comprises a first vertical part, a first connecting part and a second vertical part, the first vertical part and the second vertical part are parallel to each other, the first vertical part is vertically connected to the first connecting part, the second vertical part is connected with the first connecting part through an arc-shaped connecting part, and second clamping hooks capable of being clamped with the first clamping hooks are arranged on the first vertical part and the second vertical part; the end part of the first connecting part is provided with an occlusion part which can be matched with the clamping groove.

8. The double inwardly openable door or window of claim 6, wherein: and an extension part is arranged at the lower end of the second frame, and a fifth adhesive tape which is tightly attached to the window frame is arranged on the extension part.

9. The double inwardly openable door and window of claim 1, wherein: the window frame hinge piece comprises a first arc-shaped part, an L-shaped connecting part and an inclined part, wherein the short edge of the L-shaped connecting part is connected with the first arc-shaped part, the long edge of the L-shaped connecting part is connected with the inclined part, the included angle formed by the inclined part and the long edge of the L-shaped connecting part is 115-125 degrees, the inclined part is connected with the long edge of the L-shaped connecting part and then forms a notch towards the first arc-shaped part, the first self-positioning structure comprises a first clamping part and a first protrusion, the first clamping part is arranged at the end part of the inclined part, the first clamping part can be clamped with a groove in a window frame, and the first protrusion is arranged on the L-shaped connecting part.

10. The double inwardly openable door or window of claim 9, wherein: the window sash hinge piece comprises a first connecting plate, a second connecting plate, a third connecting plate and a second arc-shaped part, one end of the first connecting plate is connected with the second arc-shaped part, the other end of the first connecting plate is vertically connected onto the second connecting plate, the third connecting plate is obliquely arranged on the second connecting plate, an included angle between the third connecting plate and the second connecting plate is 115-shaped and 125-shaped, the second self-positioning structure comprises a second clamping part and a protrusion, the second clamping part is connected to the end part of the third connecting plate, the second clamping part is used for clamping a first groove arranged on a window sash, and the protrusion is arranged on the third connecting plate; the first connecting plate is longer than the short side of the L-shaped connecting part.