CN215056256U - Hidden hinge type inward opening ventilation window - Google Patents

Abstract

The utility model discloses a hidden hinge formula inwardly opened ventilation window, include: the window frame comprises two side window frame edges which are oppositely arranged, a hinge groove is formed at the indoor side of each side window frame edge, and a third blocking surface is formed by extending the indoor side of each side window frame edge; the window sash comprises a sash frame and a sash body arranged in the sash frame, the sash frame comprises two side sash frame edges which are oppositely arranged, a first blocking wall is formed on the indoor side of each side sash frame edge, a connecting arm parallel to the first blocking wall and smaller than the first blocking wall in length is formed between the indoor side and the outdoor side of each side sash frame edge, the first blocking wall, the connecting arm and the hinge groove form an accommodating space, and a third sealing rubber strip is arranged on the outdoor side of each connecting arm to be connected with a third blocking surface in a closed state; the hinge group is arranged in the accommodating space between one side sash frame edge and the side window frame edge and comprises a first hinge arranged on the hinge groove and a second hinge arranged on the indoor side of the connecting arm, and the second hinge is connected with the first hinge through a hinge shaft so that the window sash can be arranged on the window frame in a rotatable and left-right limiting mode.

Description

Hidden hinge type inward opening ventilation window

Technical Field

The utility model relates to a building curtain inwardly opened window designs technical field, especially relates to a hidden hinge formula inwardly opened ventilation window.

Background

The existing unit curtain wall mostly adopts the form of an outer sunshade inward opening window, the traditional inward opening window is mainly opened in a hinge mode, the hinge is a device for connection or rotation, so that a door, a window or other swinging components can rotate by the hinge, usually, the hinge is arranged on the vertical edge of the inward opening window and is installed on the outer side of a window frame, a wider vertical frame space needs to be occupied, a hinge shaft is still visible indoors, the indoor effect is not simple and attractive enough, the overall visual effect of the hinge and the curtain wall is not coordinated, meanwhile, the hinge is installed at the joint of the sash frame and the window frame, the hinge is easy to conflict with the position of an indoor sealing rubber strip after extending indoors, the rubber strip needs to be cut off to reserve the position for the hinge in order to avoid the position, and the air tightness performance and the water tightness performance of the inward opening window are reduced.

Therefore, it is necessary to provide a hidden hinge type inward opening ventilation window to improve air tightness and water tightness and to make the indoor effect simple and beautiful.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a hidden hinge formula internal opening ventilation window just makes indoor effect succinct pleasing to the eye in order to improve gas tightness and water proofness is provided.

In order to solve the technical problem, the utility model discloses a as follows technical scheme: the utility model provides a hide hinge formula internal opening ventilation window, sets up in the vertical ornamental strip department of unitized curtain wall plate, includes:

the window frame comprises an upper window frame edge, a lower window frame edge and two opposite side window frame edges, wherein the upper window frame edge and the lower window frame edge are respectively arranged in an up-down opposite mode, the indoor side of each side window frame edge is recessed towards the outdoor side to form a hinge groove, and the indoor side of each side window frame edge extends to the outer side of the hinge groove to form a third blocking surface facing the indoor side;

the window sash comprises a sash frame and a sash body, wherein the sash body is arranged on the sash frame, the sash frame comprises an upper sash frame edge and a lower sash frame edge which are respectively arranged in an up-down opposite mode and two side sash frame edges which are arranged in an opposite mode, the side sash frame edges are respectively arranged corresponding to the side window frame edges, a first baffle wall facing indoors extends from the indoor side of each side sash frame edge, a connecting arm parallel to the first baffle wall is formed between the indoor side of each side sash frame edge and the outdoor side of each side sash frame edge, the length of each connecting arm is smaller than that of each first baffle wall, an accommodating space is formed among the first baffle wall, the connecting arm and the hinge groove, a third sealing rubber strip is arranged on the outdoor side of each connecting arm, and when the window sash is closed in the window frame, each connecting arm is connected with the third baffle surface through the third sealing rubber strip;

the hinge group is arranged in the containing space between one side sash frame edge and the corresponding side window frame edge and comprises a first hinge and a second hinge, the first hinge is installed on the hinge groove, the second hinge is installed on the indoor side of the connecting arm, and the second hinge is connected with the first hinge through a hinge shaft so that the window sash can be installed on a window frame in a rotatable and left-right limiting mode.

The further technical scheme is as follows: a first blocking surface facing outdoors is formed by extending the outdoor side of the side window frame edge corresponding to the third blocking surface, a second blocking surface parallel to the first blocking surface is formed between the outdoor side of the side window frame edge and the indoor side of the side window frame edge, and a first sealing rubber strip and a second sealing rubber strip are respectively arranged at the end parts of the first blocking surface and the second blocking surface; a third baffle wall facing outdoors is formed by extending the outdoor side of the side sash frame, and a second baffle wall parallel to the third baffle wall is formed between the outdoor side of the side sash frame and the connecting arm; when the window sash is closed in the window frame, the first blocking surface is connected with the third blocking wall through the first sealing rubber strip, and the second blocking surface is connected with the second blocking wall through the second sealing rubber strip.

The further technical scheme is as follows: the area of the first blocking surface is larger than that of the second blocking surface, and the end parts of the first blocking surface and the second blocking surface are respectively provided with an indoor adhesive tape mounting groove for respectively arranging the first sealing adhesive tape and the second sealing adhesive tape.

The further technical scheme is as follows: the lower window frame edge is arranged corresponding to the lower window frame edge, the structure of the lower window frame edge is the same as that of the side window frame edge, a first baffle facing outdoors is formed by extending the outdoor side of the lower window frame edge, a water outlet is formed in the lower end part of the first baffle, a second baffle parallel to the first baffle is formed between the outdoor side of the lower window frame edge and the indoor side of the lower window frame edge, a first sealing rubber strip and a second sealing rubber strip are respectively arranged at the end parts of the first baffle and the second baffle, and a third baffle facing indoors is formed by extending the indoor side of the lower window frame edge; when the window sash is closed in the window frame, the first baffle is connected with the third baffle wall of the lower sash frame edge through the first sealing rubber strip, the second baffle is connected with the second baffle wall of the lower sash frame edge through the second sealing rubber strip, so that the first baffle, the lower window frame edge, the second baffle, the lower sash frame edge, the third baffle wall of the lower sash frame edge and the second baffle wall of the lower sash frame edge are enclosed to form a water collecting tank, and the connecting arm of the lower sash frame edge is connected with the third baffle plate through the third sealing rubber strip.

The further technical scheme is as follows: the fan body comprises two aluminum plates which are oppositely arranged and respectively face indoors and outdoors, heat-preservation rock wool is clamped between the aluminum plates, and the peripheries of the aluminum plates are oppositely bent to form folded edges to be connected with the fan frame.

The further technical scheme is as follows: and a water retaining sealant is arranged between the folded edge of the aluminum plate facing outdoors and the fan frame.

The further technical scheme is as follows: and a clamping point is formed between the connecting arm and the first blocking wall by the side sash frame edge so as to limit the position of the second hinge.

The further technical scheme is as follows: the first hinge comprises a mounting plate, a connecting plate and two bearing pieces, the two bearing pieces are arranged on the connecting plate at intervals relatively so as to enable the hinge shaft to penetrate through, the connecting plate is vertically arranged on the mounting plate, and the bearing pieces are located at the suspended end of the connecting plate; the second hinge comprises a main board and a main bearing arranged on the main board, the main board is mounted on the connecting arm through screws, and the main bearing is mounted in the interval of the two bearing pieces through the hinge shaft so as to rotate around the hinge shaft.

The further technical scheme is as follows: the outdoor side of linking arm forms adhesive tape installation position, the linking arm extends in one side that adhesive tape installation position is close to side window frame limit and extends outward and forms the chimb, the mainboard towards one side of linking arm be formed with the trip of chimb joint.

The further technical scheme is as follows: and a nut for adjusting the position of the second hinge is sleeved on the hinge shaft.

The utility model has the advantages of: the hidden hinge type inward opening ventilation window of the utility model forms a hinge groove through the indoor side of the side window frame edge of the window frame, forms a first baffle wall on the indoor side of the side window frame edge of the window frame, and a connecting arm parallel to the first baffle wall is formed between the indoor side and the outdoor side of the side sash frame, the hinge group is arranged in an accommodating space formed among the first baffle wall, the connecting arm and the hinge groove, so as to hide the hinge group without occupying the wider vertical decorating strip space of the curtain wall plate, so that the hinge group is not exposed in the closing state or the opening state of the window sash, the indoor effect is concise and beautiful, meanwhile, the length of the connecting arm is less than that of the first blocking wall, and a third sealing rubber strip is arranged on the outdoor side of the connecting arm, the position conflict between the hinge group and the third sealing rubber strip in the rotating process is avoided, the third sealing rubber strip is not required to be cut off, and the air tightness and the water tightness are effectively improved.

Drawings

Fig. 1 is a schematic structural view of a closed state of a sash when the hidden hinge type inward opening ventilation window of the present invention is installed on a curtain wall;

FIG. 2 is a schematic view of a window sash and a window frame of the concealed hinge type inwardly opened ventilation window shown in FIG. 1;

fig. 3 is a schematic structural view of a sash of the concealed hinge type inward opening ventilation window of the present invention;

fig. 4 is a schematic structural view of a side window frame edge of the concealed hinge type inward opening ventilation window of the present invention;

fig. 5 is a schematic structural view of the opened state of the sash when the hidden hinge type inward opening ventilation window of the present invention is installed on a curtain wall;

FIG. 6 is a schematic view of a window sash and a window frame of the concealed hinge type inwardly opened ventilation window shown in FIG. 5;

fig. 7 is a schematic view of a vertical cross-section structure of the bottom of the concealed hinge type inward opening ventilation window of the present invention;

fig. 8 is a schematic structural view of the hinge group of the concealed hinge type inward opening ventilation window of the present invention;

fig. 9 is a top view of the hinge group of the concealed hinge type inward opening ventilation window of the present invention;

fig. 10 is a left side view of the hinge assembly of the concealed hinge type inwardly opening ventilation window of the present invention;

fig. 11 is a schematic structural view of a first hinge of the hinge group of the concealed hinge type inward opening ventilation window of the present invention;

fig. 12 is a top view of a first hinge of a hinge group of a hidden-hinge type inwardly opening ventilation window of the present invention;

fig. 13 is a left side view of a first hinge of a hinge group of a hidden-hinge type inwardly opening ventilation window of the present invention;

fig. 14 is a schematic structural view of a second hinge of the hinge group of the concealed hinge type inward opening ventilation window of the present invention;

fig. 15 is a top view of a second hinge of the hinge group of the concealed hinge type inwardly opening ventilation window of the present invention;

fig. 16 is a left side view of a second hinge of the hinge group of the concealed hinge type inwardly opening ventilation window of the present invention;

fig. 17 is a schematic view of the hinge shaft and the fine adjustment nut of the hinge assembly of the concealed hinge type inward opening ventilation window of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 7, the hidden hinge type inwardly opened ventilation window 10 of the present invention is disposed at a vertical decoration strip of a unit type curtain wall plate, and includes a window frame 11, a window sash 12 and a hinge assembly 13, where the window frame 11 includes an upper window frame edge and a lower window frame edge 112 disposed oppositely from top to bottom and two side window frame edges 111 disposed oppositely, an indoor side of each side window frame edge 111 is recessed toward an outdoor side to form a hinge slot 113, and an indoor side of each side window frame edge 111 extends outside the hinge slot 113 to form a third blocking surface 114 facing the indoor; the window sash 12 includes a sash frame 121 and a sash body 122, the sash body 122 is mounted on the sash frame 121, the fan frame 121 comprises an upper fan frame edge and a lower fan frame edge 128 which are respectively arranged oppositely up and down and two side fan frame edges 123 which are arranged oppositely, the side sash frame edges 123 are respectively arranged corresponding to the side window frame edges 111, the indoor side of the side sash frame edges 123 extends to form a first blocking wall 124 facing the indoor, a connecting arm 125 parallel to the first blocking wall 124 is formed between the indoor side of the side sash frame edge 123 and the outdoor side of the side sash frame edge 123, the length of the connecting arm 125 is smaller than that of the first blocking wall 124, and the accommodating space 101 is formed between the first blocking wall 124, the connecting arm 125 and the hinge slot 113, the outdoor side of the connecting arm 125 is provided with a third sealing rubber strip 102 which, when the sash 12 is closed in the frame 11, when the window sash 12 is in the closed state, the connecting arm 125 is connected to the third retaining surface 114 through the third sealing rubber strip 102; the hinge set 13 is disposed in the accommodating space 101 between one of the side sash frames 123 and the corresponding side sash frame 111, and includes a first hinge 131 and a second hinge 132, the first hinge 131 is mounted on the hinge groove 113, the second hinge 132 is mounted on the indoor side of the connecting arm 125, and the second hinge 132 is connected to the first hinge 131 through a hinge shaft 133, so that the sash 12 is rotatably mounted on the sash 11 in a left-right limiting manner.

Wherein, indoor side means is close to and faces indoor one side, and outdoor side means is close to and faces outdoor one side, the number of hinge group 13 can be a plurality of and distribute side by side in accommodation space 101, casement 12 opens towards indoor, and its and window frame 11 between the opening angle scope be 0-90, and the state of opening of casement 12 means that casement 12 is opened to being 90 with window frame 11, and in the opening process, first wall 124 can not receive the hindrance of window frame 11, window frame 11 and casement 12 adopt 45 concatenation, hide the outdoor side correspondence of hinge formula internal opening ventilation window 10 towards the perforation aluminum plate sunshading board 20 of unit formula curtain wall. The hidden hinge type inward opening ventilation window 10 forms a hinge groove 113 through the indoor side of the side window frame edge 111 of the window frame 11, forms a first blocking wall 124 through the indoor side of the side window frame edge 123 of the window sash 121 of the window sash 12, and forms a connecting arm 125 parallel to the first blocking wall 124 between the indoor side of the side window frame edge 123 and the outdoor side thereof, the hinge group 13 is installed in the accommodating space 101 formed among the first blocking wall 124, the connecting arm 125 and the hinge groove 113 to hide the hinge group 13 without occupying a vertical frame space of a wide curtain wall plate, so that the hinge group 13 is not exposed in the closing state or the opening state of the window sash 12, the indoor effect is simple and beautiful, meanwhile, the length of the connecting arm 125 is smaller than that of the first blocking wall 124, and a third sealant strip 102 is arranged on the outdoor side of the connecting arm 125 to avoid the position conflict of the hinge group 13 with the third sealant strip 102 in the rotation process, the third sealing rubber strip 102 does not need to be cut off to avoid the hinge group 13, and the air tightness and the water tightness are effectively improved.

Specifically, in this embodiment, a first blocking surface 115 facing outdoors is formed by extending the outdoor side of the side window frame 111 corresponding to the third blocking surface 114, a second blocking surface 116 parallel to the first blocking surface 115 is formed between the outdoor side of the side window frame 111 and the indoor side of the side window frame 111, a first sealing rubber strip 103 is disposed at an end of the first blocking surface 115, and a second sealing rubber strip 104 is disposed at an end of the second blocking surface 116; a third blocking wall 126 facing outdoors is formed by extending the outdoor side of the side sash frame edge 123, and a second blocking wall 127 parallel to the third blocking wall 126 is formed between the outdoor side of the side sash frame edge 123 and the connecting arm 125; when the window sash 12 is closed in the window frame 11, the first blocking surface 115 is connected to the third blocking wall 126 through the first sealant strip 103, and the second blocking surface 116 is connected to the second blocking wall 127 through the second sealant strip 104, so as to form the first sealed space 105 by enclosing between the side window frame border 111 and the side window frame border 123, so as to block most of the rainwater outdoors through the first sealant strip 103, block a small part of the rainwater penetrating through the second sealant strip 104, and collect the rainwater in the first sealed space 105.

Preferably, the area of the first blocking surface 115 is larger than that of the second blocking surface 116, and adhesive tape mounting grooves 117 facing the interior are formed at the end portions of the first blocking surface 115 and the second blocking surface 116, respectively, so as to be provided for the first sealing adhesive tape 103 and the second sealing adhesive tape 104, respectively. The area of the first blocking surface 115 is larger than that of the second blocking surface 116, so that rainwater can be better blocked.

With continued reference to fig. 7, preferably, the lower frame edge 128 is disposed corresponding to the lower window frame edge 112, and the structure of the lower frame edge 128 is the same as that of the side frame edge 123, so that a first blocking wall 124 facing indoors is formed by extending the indoor side of the lower frame edge 128, a connecting arm 125 parallel to the first blocking wall 124 is formed between the indoor side of the lower frame edge 128 and the outdoor side of the lower frame edge 126, the length of the connecting arm 125 is smaller than that of the first blocking wall 124, a third sealant strip 102 is disposed on the outdoor side of the connecting arm 125, a third blocking wall 126 facing outdoors is formed by extending the outdoor side of the lower frame edge 128, and a second blocking wall 127 parallel to the third blocking wall 126 is formed between the outdoor side of the lower frame edge 128 and the connecting arm 125. A first baffle 118 facing outdoors is formed by extending the outdoor side of the lower window frame edge 112, a water outlet 1181 is formed at the lower end of the first baffle 118, a second baffle 119 parallel to the first baffle 118 is formed between the outdoor side of the lower window frame edge 112 and the indoor side of the lower window frame edge 112, a first sealing rubber strip 103 is arranged at the end of the first baffle 118, a second sealing rubber strip 104 is arranged at the end of the second baffle 119, and a third baffle 1121 facing indoors is formed by extending the indoor side of the lower window frame edge 112; when the window sash 12 is closed in the window frame 11, the first baffle 118 is connected to the third blocking wall 126 of the lower sash frame edge 128 by the first sealant strip 103, and the second baffle 119 is connected to the second blocking wall 127 of the lower sash frame edge 128 by the second sealant strip 104, so that the first baffle 118, the lower sash frame edge 112, the second baffle 119, the lower sash frame edge 128 and the third blocking wall 126 thereof enclose the water collecting groove 106 between the second blocking wall 127 of the lower sash frame edge 128, and the connecting arm 125 of the lower sash frame edge 128 is connected to the third blocking wall 1121 by the third sealant strip 102. The lower window frame 112 shields most of the rainwater outdoors through the first sealing rubber strip 103, shields a small part of the rainwater permeated into the lower window frame through the second sealing rubber strip 104, collects the rainwater in the water collecting tank 106, and then discharges the rainwater outdoors through the water discharge opening 1181. Preferably, the first sealed space 105 may communicate with the water collection tank 106, so that the collected rainwater may enter the water collection tank 106 by gravity and be discharged to the outside through the water discharge opening 1181.

Specifically, the fan body 122 includes two aluminum plates 1221 disposed oppositely and facing the indoor and outdoor, the heat preservation rock wool 1222 is sandwiched between the two aluminum plates 1221, and the peripheries of the two aluminum plates 1221 are bent oppositely to form a folded edge 1223 for connecting with the fan frame 121. The fan frame 121 is fixedly connected with the aluminum plate 1221 through the screws 107, so that the fan body 122 is installed in the fan frame 121, and the heat preservation rock wool 1222 is additionally installed in the aluminum plate 1221, so that the heat preservation and energy saving effects can be achieved. Preferably, a water-blocking sealant 108 is disposed between the folded edge 1223 of the aluminum plate 1221 facing outdoors and the fan frame 121 to prevent rainwater from penetrating into the fan body 122, so that the fan body 122 has high water-tightness and can stabilize the structure. The window frame 11 and the window sash 12 are spliced by 45 degrees, after four corners of the window sash 12 are assembled, structural glue can be injected between the folded edge 1223 of the aluminum plate 1221 of the sash body 122 and the sash frame 121 to be connected, so that the water retaining sealant 108 is formed to ensure the stability of the structure and prevent water seepage. Wherein, the indoor side of casement 12 can be equipped with hidden handle, hidden handle invagination and window body 121's indoor side's aluminum plate 1221 in the surface, avoid scraping indoor personnel.

With continued reference to fig. 2, 3, 4 and 6, in the present embodiment, the side sash edge 123 forms a fastening point 1231 between the connecting arm 125 and the first blocking wall 124 to define the position of the second hinge 132. Second hinge 132 passes through screw 107 and installs on connecting arm 125, realizes the joint of second hinge 132 and connecting arm 125 through trip point 1231, can prevent the aversion of second hinge 132, and second hinge 132 side inserts the reducible dead weight eccentric force of trip point 1231 and to the influence of screw 107, makes the connection more reliable and more stable.

Referring to fig. 8 to 17, preferably, a nut 134 for adjusting the position of the second hinge 132 is sleeved on the hinge shaft 133 to abut against an end of the second hinge 132, and the position of the nut 134 on the hinge shaft 133 is adjusted to adjust the height position of the second hinge 132 relative to the first hinge 131, so that the height position of the window sash 12 relative to the window frame 11 is adjusted, and a gap between the window sash 12 and the window frame 11 is uniform. In this embodiment, the number of the nuts 134 is two, and of course, in other embodiments, the number of the nuts 134 may be one.

Specifically, in this embodiment, the first hinge 131 includes a mounting plate 1311, a connecting plate 1312 and two bearings 1313, the two bearings 1313 are disposed on the connecting plate 1312 at an interval to allow the hinge shaft 133 to pass through, the connecting plate 1312 is disposed on the mounting plate 1311 vertically, and the bearings 1313 are located at a free end of the connecting plate 1312; the second hinge 132 includes a main plate 1321 and a main bearing 1322 disposed on the main plate 1321, the main plate 1321 is mounted on the connecting arm 125 by a screw 107, and the main bearing 1322 is mounted in the space between the two bearing pieces 1313 by the hinge shaft 113, so that the main bearing 1322 rotates around the hinge shaft 133, thereby driving the sash frame 122 to rotate around the hinge shaft 133, and opening and closing the sash 12 is achieved. The mounting plate 1311 is mounted in the hinge slot 113 and fixed by a screw 107, and two nuts 134 sleeved on the hinge shaft 133 are respectively located at two ends of the main bearing 1322 to adjust the position of the second hinge 132. The mounting plate 1311 and the main plate 1321 are provided with hole sites 1001 for the screws 107 to pass through.

With reference to fig. 3, 6 and 15, specifically, the adhesive tape mounting position 109 is formed at the outdoor side of the connecting arm 125, the connecting arm 125 extends outward at one side of the adhesive tape mounting position 109 close to the corresponding side window frame edge 111 to form a convex edge 1251, a hook 1323 clamped with the convex edge 1251 is formed at one side of the main board 1321 facing the connecting arm 125, the main board 1321 is mounted on the connecting arm 125 through a screw 107, and the hook 1323 is clamped with the convex edge 1251 to limit the position of the second hinge 132, so as to prevent the second hinge 132 from shifting, and thus the connection is more stable and reliable.

To sum up, the hidden hinge type inward opening ventilation window of the present invention forms a hinge slot through the indoor side of the side window frame of the window frame, forms a first blocking wall in the indoor side of the side window frame of the window sash, and forms a connecting arm parallel to the first blocking wall between the indoor side of the side window frame and the outdoor side thereof, the hinge assembly is installed in the accommodating space formed between the first blocking wall, the connecting arm and the hinge slot to hide the hinge assembly without occupying the wider mullion space of the curtain wall plate, so that the hinge assembly is not exposed in the closed state or the open state of the window sash, the indoor effect is simple and beautiful, simultaneously, the length of the connecting arm is smaller than the first blocking wall and the outdoor side of the connecting arm is provided with a third sealing rubber strip, so as to avoid the position conflict of the hinge assembly with the third sealing rubber strip in the rotation process, and the cutting design of the third sealing rubber strip is not needed, effectively improving the air tightness and the water tightness.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a hide hinge formula internal opening ventilation window, sets up in the vertical ornamental strip department of unitized curtain wall plate, its characterized in that includes:

the window frame comprises an upper window frame edge, a lower window frame edge and two opposite side window frame edges, wherein the upper window frame edge and the lower window frame edge are respectively arranged in an up-down opposite mode, the indoor side of each side window frame edge is recessed towards the outdoor side to form a hinge groove, and the indoor side of each side window frame edge extends to the outer side of the hinge groove to form a third blocking surface facing the indoor side;

the window sash comprises a sash frame and a sash body, wherein the sash body is arranged on the sash frame, the sash frame comprises an upper sash frame edge and a lower sash frame edge which are respectively arranged in an up-down opposite mode and two side sash frame edges which are arranged in an opposite mode, the side sash frame edges are respectively arranged corresponding to the side window frame edges, a first baffle wall facing indoors extends from the indoor side of each side sash frame edge, a connecting arm parallel to the first baffle wall is formed between the indoor side of each side sash frame edge and the outdoor side of each side sash frame edge, the length of each connecting arm is smaller than that of each first baffle wall, an accommodating space is formed among the first baffle wall, the connecting arm and the hinge groove, a third sealing rubber strip is arranged on the outdoor side of each connecting arm, and when the window sash is closed in the window frame, each connecting arm is connected with the third baffle surface through the third sealing rubber strip;

the hinge group is arranged in the containing space between one side sash frame edge and the corresponding side window frame edge and comprises a first hinge and a second hinge, the first hinge is installed on the hinge groove, the second hinge is installed on the indoor side of the connecting arm, and the second hinge is connected with the first hinge through a hinge shaft so that the window sash can be installed on a window frame in a rotatable and left-right limiting mode.

2. The concealed hinge type inward opening ventilation window according to claim 1, wherein a first blocking surface facing outdoors is formed by extending an outdoor side of the side window frame corresponding to the third blocking surface, a second blocking surface parallel to the first blocking surface is formed between the outdoor side of the side window frame and an indoor side of the side window frame, and ends of the first blocking surface and the second blocking surface are respectively provided with a first sealing rubber strip and a second sealing rubber strip; a third baffle wall facing outdoors is formed by extending the outdoor side of the side sash frame, and a second baffle wall parallel to the third baffle wall is formed between the outdoor side of the side sash frame and the connecting arm; when the window sash is closed in the window frame, the first blocking surface is connected with the third blocking wall through the first sealing rubber strip, and the second blocking surface is connected with the second blocking wall through the second sealing rubber strip.

3. The hidden hinge type inward opening ventilation window according to claim 2, wherein the area of the first blocking surface is larger than that of the second blocking surface, and adhesive tape mounting grooves facing indoors are formed at the end parts of the first blocking surface and the second blocking surface respectively for the first sealing adhesive tape and the second sealing adhesive tape to be arranged.

4. The concealed hinge type inward opening ventilating window according to claim 2, wherein the lower window frame edge is arranged corresponding to the lower window frame edge, the structure of the lower window frame edge is the same as that of the side window frame edge, a first baffle plate facing outdoors is formed by extending the outdoor side of the lower window frame edge, a water outlet is formed at the lower end of the first baffle plate, a second baffle plate parallel to the first baffle plate is formed between the outdoor side of the lower window frame edge and the indoor side of the lower window frame edge, a first sealing rubber strip and a second sealing rubber strip are respectively arranged at the end parts of the first baffle plate and the second baffle plate, and a third baffle plate facing indoors is formed by extending the indoor side of the lower window frame edge; when the window sash is closed in the window frame, the first baffle is connected with the third baffle wall of the lower sash frame edge through the first sealing rubber strip, the second baffle is connected with the second baffle wall of the lower sash frame edge through the second sealing rubber strip, so that the first baffle, the lower window frame edge, the second baffle, the lower sash frame edge, the third baffle wall of the lower sash frame edge and the second baffle wall of the lower sash frame edge are enclosed to form a water collecting tank, and the connecting arm of the lower sash frame edge is connected with the third baffle plate through the third sealing rubber strip.

5. The hidden hinged inward opening ventilation window of claim 1, wherein the sash comprises two aluminum plates which are oppositely arranged and respectively face the indoor and outdoor, heat preservation rock wool is clamped between the two aluminum plates, and the peripheries of the two aluminum plates are oppositely bent to form folded edges so as to be connected with the sash frame.

6. The concealed hinge type inward opening ventilation window according to claim 5, wherein a water-blocking sealant is arranged between the folded edge of the aluminum plate facing outdoors and the sash frame.

7. The window of claim 1, wherein the jamb defines a detent between the connecting arm and the first stop wall to define the position of the second hinge.

8. The concealed hinge type internally-opened ventilation window according to claim 1, wherein the first hinge comprises a mounting plate, a connecting plate and two bearing pieces, the two bearing pieces are oppositely arranged on the connecting plate at intervals for the hinge shaft to pass through, the connecting plate is vertically arranged on the mounting plate, and the bearing pieces are positioned at a free end of the connecting plate; the second hinge comprises a main board and a main bearing arranged on the main board, the main board is mounted on the connecting arm through screws, and the main bearing is mounted in the interval of the two bearing pieces through the hinge shaft so as to rotate around the hinge shaft.

9. The hidden hinge type inward opening ventilation window according to claim 8, wherein the outdoor side of the connecting arm forms an adhesive tape mounting position, the connecting arm extends outward from a side of the adhesive tape mounting position close to the side window frame edge to form a convex edge, and a hook clamped with the convex edge is formed on a side of the main board facing the connecting arm.

10. The concealed hinge type inward opening ventilation window according to claim 1, wherein a nut for adjusting the position of the second hinge is sleeved on the hinge shaft.

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