CN213144224U - Inward opening door - Google Patents

Abstract

The utility model relates to an in-opening door, including fixed frame, fan frame and main locking device, main locking device's lock body connecting rod one end and main operating handle are connected in the indoor side of right fan frame, and the other end is connected in the cross-section type intracavity of right fan frame with main locking device's spring bolt, still including attaching the locking device, attach the lockpin of locking device install in the outdoor side of fan frame is suitable for and removes between open position and closure position, is located when open the position the lockpin retracts completely the fan frame is located during the closure position at least some of lockpin stretches out to fixed frame. The independent main lock device and the independent auxiliary lock device are respectively arranged on the indoor side and the outdoor side of the inward opening door, so that the transmission of indoor and outdoor energy through the lock body connecting rod is avoided, the energy saving performance of the inward opening door is improved, and the convenience of the inward opening door opening and locking operation is ensured.

Description

Inward opening door

Technical Field

The utility model relates to a building door and window field especially relates to an in-opening door.

Background

In the traditional building, the heat transfer capacity of the doors and the windows accounts for more than 20% of the total energy consumption of the building, and in the energy-saving building, the proportion of the heat loss of the doors and the windows accounts for more than the total energy consumption of the building along with the increase of the thermal resistance of the wall body made of the heat insulation material. Therefore, energy saving technology for doors and windows is receiving more and more attention.

In order to improve the energy saving performance of doors and windows, researchers mainly concentrate on the improvement of section, sealing rubber strips and hollow glass layer structures, but do not pay attention to doors and windows, particularly doors communicated outdoors, such as doors communicated to balconies and courtyards, because users have the use requirements of locking door bodies on the indoor side and the outdoor side, double-open handle locks or double-open knob locks which can be used for controlling lock bodies in a linkage mode indoors and outdoors are often adopted, but at the moment, indoor and outdoor energy can be transmitted through the lock body connecting rod of the double-open handle lock or the double-open knob lock, which penetrates through the indoor and outdoor sides, so that the energy saving performance is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide one kind and can avoid improving the interior door of energy-conservation nature for the building through the lock body connecting rod transmission energy of two divisions of handle locks or two divisions of knob locks.

The utility model aims at accomplishing through following technical scheme, a in-opening door, including fixed frame, fan frame and main locking device, fixed frame includes upper fixed frame, lower fixed frame, left fixed frame and right fixed frame, fan frame includes upper fan frame, lower fan frame, left fan frame and right fan frame, flat-open hinged joint in between left fixed frame and the left fan frame, main lock device's main operating handle install in the indoor side of right fan frame, main locking device's lock body connecting rod one end with main operating handle connect in the indoor side of right fan frame, the other end with main locking device's spring bolt connect in the cross-section intracavity of right fan frame, its characterized in that: the lock device comprises a lock pin, a locking device and a locking device, wherein the lock pin of the lock device is arranged on the outdoor side of the fan frame and is suitable for moving between an opening position and a closing position, the lock pin is completely retracted to the fan frame when the lock device is located at the opening position, and at least one part of the lock pin extends out of the fixing frame when the lock device is located at the closing position.

The utility model discloses indoor side installation master lock device including opening the door attaches the locking device including the outdoor side installation of opening the door, and the tip of the lock body connecting rod of master lock device only is located fan frame cross-section intracavity, and the tip through the lock body connecting rod is connected with the spring bolt, because the lock body connecting rod does not link up the outdoor side to the door that opens in, has avoided indoor outer energy to transmit through the lock body connecting rod to can carry out opening and closure operation of opening the door in through master lock device and attaching the locking device respectively in indoor side and outdoor side.

Further, the utility model discloses an in-opening door, the lockpin is the round pin post, attach the locking device and still include the installation cover, the installation cover is fixed in the outdoor side of right side fan frame lower extreme, the round pin post is worn to locate in the installation cover and be suitable for along vertical direction and remove between open position and closure position, be located during the open position the round pin head of round pin post lower extreme retracts into completely the fan frame is located during the closure position the round pin head of round pin post lower extreme stretches out extremely fixed frame.

Further, the utility model discloses an in-opening door, attach the locking device and still include unblock shell fragment and reset spring, the one end cantilever of unblock shell fragment is fixed in the installation cover, the unblock shell fragment has lock state and unblock state, it is suitable for to have on the unblock shell fragment the through-hole that the round pin post passed, the through-hole size slightly is greater than the round pin post external diameter works as when the unblock shell fragment is in lock state, the unblock shell fragment is first angle with the horizontal direction, the through-hole pore wall support lean on in the round pin post, work as when the unblock shell fragment is in unlock state, the unblock shell fragment is less than with the horizontal direction the second angle of first angle, the through-hole pore wall with the round pin post has the clearance.

Further, the utility model discloses a door opens in, the top of round pin post has presses the cap.

Further, the utility model discloses an in-opening door, it still includes the voussoir to attach the locking device, the voussoir is fixed in lower fixed frame and with the round pin post is relative in the position on the horizontal direction, the round pin head is being close to the fan frame side have with the inclined plane that the voussoir matches.

Furthermore, the inward opening door of the utility model, the lock pin comprises an upper pin rod and a lower pin rod, the auxiliary locking device further comprises an auxiliary operating handle, an upper mounting sleeve and a lower mounting sleeve, the auxiliary operating handle is arranged at the outdoor side of the right sash frame, the lower end of the upper pin rod is connected with the auxiliary operating handle and extends upwards to the position near the upper sash frame, the upper end of the lower pin rod is connected with the auxiliary operating handle and extends downwards to the position near the lower sash frame, the upper mounting sleeve and the lower mounting sleeve are fixed at the outdoor side of the right sash frame and are respectively distributed above and below the auxiliary operating handle, the upper pin rod and the lower pin rod are respectively penetrated in the upper mounting sleeve and the lower mounting sleeve and are suitable for moving between an opening position and a locking position along the vertical direction, and when in the opening position, the lower pin head at the lower end of the upper pin rod is completely retracted to the sash frame, and when the locking device is positioned at the locking position, the upper pin head at the upper end of the upper pin rod and the lower pin head at the lower end of the lower pin rod extend out of the fixing frame.

Further, the utility model discloses an in-opening door, it includes first installation cover, the second installation cover to go up the installation cover, first installation cover of going up is located right side fan frame top, the installation cover is located on the second first installation cover with attach between the handle, the installation cover includes installation cover, second installation cover down, first installation cover is located right side fan frame bottom, the installation cover is located under the second first installation cover with attach between the handle.

Further, the utility model discloses an in-opening door, attach the locking device and still include key seat, lower key seat, go up the key seat, the lower key seat is fixed in respectively go up fixed frame, lower fixed frame and with go up pin rod, lower pin rod position on the horizontal direction is relative, in order to be suitable for respectively with go up pin head, lower pin head cooperation closure.

Further, the utility model discloses an in-opening door, go up the round pin head, down the round pin head all includes round pin headstock and round pin head post, the round pin head post is fixed in the round pin headstock is followed along the horizontal direction the round pin head seat stretches out, go up the round pin seat, down the round pin seat have horizontal fluting respectively, in order to be suitable for the round pin head post gets into along vertical direction horizontal fluting.

Further, the utility model discloses an in-opening door, fixed frame is including the fixed wooden frame that is located indoor side, the fan frame is including the first wooden frame and the second wooden frame that are located indoor side.

The utility model discloses an above-mentioned technical scheme can realize following effect:

through the technical scheme of the utility model, set up independent owner's locking device respectively and attach the locking device in the indoor side of opening the door and outdoor side, avoided indoor outer energy to pass through the transmission of lock body connecting rod, improved the energy-conservation nature of in-opening door to guarantee the convenience of in-opening door opening and closure operation.

Drawings

The above and other objects, features and advantages of embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

fig. 1 is a schematic elevational view of a first embodiment of the in-opening door of the present invention;

FIG. 2 is a schematic enlarged view of a portion indicated by "A" in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line C-C in FIG. 1;

fig. 4 is a schematic enlarged view of a portion indicated by "B" in fig. 3;

fig. 5 is a schematic elevational view of a second embodiment of the in-opening door of the present invention;

FIG. 6 is a schematic cross-sectional view taken along line D-D in FIG. 5;

FIG. 7 is a schematic cross-sectional view taken along line E-E in FIG. 5;

fig. 8 is a schematic enlarged view of a portion indicated by "F" in fig. 7;

fig. 9 is a schematic view of the main lock device of the inward opening door of the present invention.

In the drawings, like or corresponding reference numerals designate like or corresponding parts throughout the several views:

1-fixed frame, 11-upper fixed frame, 12-lower fixed frame, 13-left fixed frame, 14-right fixed frame, 2-sash frame, 21-upper sash frame, 22-lower sash frame, 23-left sash frame, 24-right sash frame, 3-locking device, 31-pin column, 32-pin head, 33-mounting sleeve, 34-pressing cap, 35-unlocking spring sheet, 36-return spring, 37-wedge block, 38-auxiliary operating handle, 391-upper pin rod, 392-lower pin rod, 3101-upper pin seat, 3102-lower pin seat, 3111-upper pin head, 3112-lower pin head, 3121-first upper mounting sleeve, 3122-second upper mounting sleeve, 3123-second lower mounting sleeve, 3124-main locking device, 41-main operating handle, 42-lock body connecting rod, 43-bolt, 51-fixed wooden frame, 52-first wooden frame and 53-second wooden frame.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments. It should be understood that these embodiments are given solely for the purpose of enabling those skilled in the art to better understand and thereby implement the present invention, and are not intended to limit the scope of the invention in any way.

It should be noted that although the present invention uses the expressions "first", "second", etc. to describe the different components of the embodiments of the present invention, the expressions "first", "second", etc. are merely used to distinguish between the different components and do not indicate a specific order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable.

To the utility model discloses in use the position term, "go up", "down", "left", "right", "vertical", "level" indicate the direction when the normal use state of in-opening door, but two positions of "left", "right" are realizing the utility model discloses can exchange when technical scheme.

As shown in fig. 1 and 9, the utility model discloses an in-opening door, including fixed frame 1, fan frame 2, main locking device 4 and attach locking device 3, wherein fixed frame 1 includes upper fixed frame 11, lower fixed frame 12, left fixed frame 13 and right fixed frame 14, and fan frame 2 includes upper fan frame 21, lower fan frame 22, left fan frame 23 and right fan frame 24, and flat-open hinged mounting in between left fixed frame 13 and the left fan frame 23, fan frame 2 carries out the flat-open operation of pivot for fixed frame 1 through the flat-open hinge. The main lock device 4 is arranged on the indoor side of the inward opening door, the main lock device 4 comprises a main operating handle 41, a lock body connecting rod 42 and a lock bolt 43, wherein the main operating handle 41 is installed on the indoor side of the right sash frame 24, one end of the lock body connecting rod 42 is connected with the main operating handle 41, the lock body connecting rod 42 extends from the indoor side to the outdoor side along the horizontal direction and only extends into a section cavity of the right sash frame 24, the lock body connecting rod 42 does not extend through the outdoor side, and energy transmission loss caused by temperature difference between the indoor side and the outdoor side is avoided through the lock body connecting rod 42. Meanwhile, the lock body connecting rod 42 is in transmission connection with the bolt 43 at the end part in the section cavity of the right sash frame 24, and a user can drive the bolt 43 to move through the lock body connecting rod 42 by rotating the main operating handle 41 at the indoor side, so that the opening and locking states of the inward opening door are realized. As is well known to those skilled in the art, the main operating handle 41 may be a knob or knob, and the driving connection between the lock link 42 and the lock tongue 43 may be a rack and pinion type, a shift fork type, or other conventional lock tongue driving connection.

As shown in fig. 2 to 4, the auxiliary locking device 3 is further disposed outside the inside opening door, in the first embodiment of the present invention, the auxiliary locking device 3 includes a pin 31, a mounting sleeve 33, an unlocking elastic sheet 35, a return spring 36 and a wedge 37, the mounting sleeve 33 is fixed at the lower end of the right sash frame 24, and the pin 31 passes through the mounting sleeve 33 and can move up and down in the mounting sleeve 33 along the vertical direction. Unblock shell fragment 35, reset spring 36 all cooperate with installation cover 33, and reset spring 36 cover is located and is provided vertical ascending elastic force on the round pin 31 and to the round pin 31, and the one end cantilever of unblock shell fragment 35 is fixed in installation cover 33, unblock shell fragment 35 has first angle for the horizontal direction under the normal condition, tilt up promptly, because cantilever structure makes it have ascending elastic restoring force when unblock shell fragment 35 is pushed down. The unlocking elastic sheet 35 is provided with a through hole, the size of the through hole is slightly larger than the outer diameter of the pin 31, the pin 31 penetrates through the through hole, when the unlocking elastic sheet 35 is in a locking state, namely the unlocking elastic sheet 35 is at a first angle with the horizontal direction, the through hole inclines to enable the hole wall part far away from the fan frame 2 to abut against the pin 31, the pin 31 is helped to overcome the elastic force of the reset spring 36, when the unlocking elastic sheet 35 is in an unlocking state, namely the unlocking elastic sheet 35 is at a second angle smaller than the first angle with the horizontal direction, and due to the fact that the size of the through hole is slightly larger than the pin 31, a gap is formed between the through hole and the pin 31, and the elastic force of the reset spring 36 acting.

The top of the pin 31 is provided with a pressing cap 34 for a user to press or step on by hand, and the bottom of the pin 31 is provided with a pin head 32 for contacting and matching the pin head 32 with the fixed frame 1 when the pin 31 extends downwards to the fixed frame 1, so as to ensure the stable closing between the sash frame 2 and the fixed frame 1. In this embodiment, a wedge 37 is attached to the lower frame 12, the wedge 37 is horizontally opposed to the pin 31, the pin head 32 has an inclined surface on the side close to the sash frame 2, the inclined surface being matched with the wedge 37, and when the pin 31 is extended downward to the fixed frame 1, the inclined surface is brought into surface contact with the corresponding surface of the wedge 37, thereby ensuring the maximum stable closing between the sash frame 2 and the fixed frame 1.

Specifically, with the in-opening door of the present embodiment, when a user is inside the room, the main operating handle 41 is rotated to move the latch 43, thereby opening or closing the in-opening door. When a user walks out of the room, the auxiliary locking device 3 is positioned at the lower right corner of the fan frame 2, the pressing cap 34 is pressed by feet to overcome the elastic force of the reset spring 36, the pin 31 is pressed down to enable the pin head 32 to be tightly matched with the wedge block 37, the door body locking is realized, the feet are released at the moment, the locking effect of the pin 32 is continuously kept due to the abutting effect of the hole wall of the through hole of the unlocking elastic sheet 35, when the door body needs to be opened, the unlocking elastic sheet 35 is pressed down by the feet, and the pin 31 moves upwards under the action of the reset spring 36 to return to the opening state due to the gap between the through hole and the pin 31, so that the pin head 32 is completely retracted to the fan frame 2. Therefore, the present embodiment is applicable only to the out-in door.

As shown in fig. 5 to 8, in the second embodiment of the present invention, the auxiliary locking device 3 includes an upper pin rod 391, a lower pin rod 392, an auxiliary operating handle 38, a first upper mounting sleeve 3121, a second upper mounting sleeve 3122, a first lower mounting sleeve 3124, a second lower mounting sleeve 3123, an upper pin base 3101, and a lower pin base 3102, the auxiliary operating handle 38 is mounted on the outdoor side of the right sash frame 24, the lower end of the upper pin rod 391 is connected to the auxiliary operating handle 38 and extends upward to the vicinity of the upper sash frame 21, and the upper end of the lower pin rod 392 is connected to the auxiliary operating handle 38 and extends downward to the vicinity of the lower sash frame 21. A first upper mounting sleeve 3121, a second upper mounting sleeve 3122, a first lower mounting sleeve 3124, and a second lower mounting sleeve 3123 are all mounted on the right fan frame 24, the first upper mounting sleeve 3121 is located at the top of the right fan frame 24, the second upper mounting sleeve 3122 is located between the first upper mounting sleeve 3121 and the additional operating handle 38, the first lower mounting sleeve 3124 is located at the bottom of the right fan frame 24, the second lower mounting sleeve 3123 is located between the first lower mounting sleeve 3124 and the additional operating handle 38, the first upper mounting sleeve 3121, the second upper mounting sleeve 3122, the first lower mounting sleeve 3124, and the second lower mounting sleeve 3123 each have a through opening such that an upper pin 391 may vertically pass through the first upper mounting sleeve 3121 and the second upper mounting sleeve 3122, and a lower pin 392 may vertically pass through the first lower mounting sleeve 3124 and the second lower mounting sleeve 3123 through which pass the upper pin 391, Lower pin 392 is vertically movably mounted to the outdoor side of right sash frame 24.

In this embodiment, the lower end of the upper pin 391 is connected to the additional operating handle 38, the upper end of the lower pin 392 is connected to the additional operating handle 38, and the additional operating handle 38 can drive the upper pin 391 and the lower pin 392 to move toward or away from each other, that is, the upper pin 391 moves upward while the lower pin 392 moves downward, and the upper pin 391 moves downward while the lower pin 392 moves upward. As is well known to those skilled in the art, the auxiliary lever 38 may be a rotary lever handle, a rotary knob, or other conventional sliding type levers.

When the door body needs to be locked, the upper pin rod 391 and the lower pin rod 392 are operated to move, so that the upper pin head 3111 extends upwards to the upper fixing frame 11, meanwhile, the lower pin head 3112 extends downwards to the lower fixing frame 12, and at the moment, the upper pin head 3111 and the lower pin head 3112 block the relative movement between the sash frame 2 and the fixing frame 1, and the door body locking is realized. When the door body needs to be opened, the upper pin head 3111 is retracted downwards to the sash frame 2 by operating the upper pin rod 391 and the lower pin rod 392 to move, and meanwhile, the lower pin head 3112 is retracted upwards to the sash frame 2, at this time, the upper pin head 3111 and the lower pin head 3112 cannot block the relative movement between the sash frame 2 and the fixed frame 1, and the door body is opened.

The upper pin base 3101 and the lower pin base 3102 are respectively fixed on the upper fixing frame 11 and the lower fixing frame 12 and are opposite to the upper pin rod 391 and the lower pin rod 392 in the horizontal direction, the upper pin head 3111 and the lower pin head 3112 both comprise pin head bases and pin head columns, the pin head columns are fixed on the pin head bases and extend out of the pin head bases along the horizontal direction, and the upper pin base 3101 and the lower pin base 3102 are respectively provided with transverse slots, so that the pin head columns can enter the transverse slots along the vertical direction, and the locking stability between the fixing frame 1 and the fan frame 2 is realized.

Specifically, with the in-opening door of the present embodiment, when a user is inside the room, the main operating handle 41 is rotated to move the latch 43, thereby opening or closing the in-opening door. When a user walks out of the room, the user rotates the auxiliary operating handle 38 to drive the upper pin rod 391 to move upwards so that the upper pin head 3111 extends upwards to the upper fixed frame 11, the pin head column of the upper pin head 3111 enters the transverse slot of the upper pin base 3101, the auxiliary operating handle 38 simultaneously drives the lower pin rod 392 to move downwards so that the lower pin head 3112 extends downwards to the lower fixed frame 11, the pin head column of the lower pin head 3112 enters the transverse slot of the lower pin base 3102, and the door body is locked stably by the aid of cooperation of the pin head and the pin base. When the door body needs to be opened, the auxiliary operating handle 38 is rotated to drive the upper pin rod 392 to move downwards so that the upper pin head 3111 retracts downwards to the fan frame 2, the auxiliary operating handle 38 simultaneously drives the lower pin rod 392 to move upwards so that the lower pin head 3112 retracts upwards to the fan frame 2, the stopping effect of the pin head on the fixing frame 1 is removed, and the door body is opened.

Further, the utility model discloses an in-opening door can be applied to the door product of various section bar materials, for example is applied to wooden alclad door, and fixed frame 1 is including the fixed wooden frame 51 that is located indoor side promptly, and fan frame 2 is including the first wooden frame 52 and the second wooden frame 53 that are located indoor side, and the wooden frame is installed at aluminium alloy ex-trusions's indoor side, on guaranteeing decorative basis, has further improved the energy-conservation nature and the lock simple operation nature of wooden alclad in-opening door.

The foregoing description of the implementation of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principles of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated.

Claims (10)

1. An in-opening door comprises a fixed frame (1), a sash frame (2) and a main lock device (4), the fixed frame (1) comprises an upper fixed frame (11), a lower fixed frame (12), a left fixed frame (13) and a right fixed frame (14), the sash frame (2) comprises an upper sash frame (21), a lower sash frame (22), a left sash frame (23) and a right sash frame (24), a flat-open hinge is arranged between the left fixed frame (13) and the left sash frame (23), a main operating handle (41) of the main lock device (4) is arranged on the indoor side of the right fan frame (24), lock body connecting rod (42) one end of main locking device (4) with main operating handle (41) connect in the indoor side of right fan frame (24), the other end with spring bolt (43) of main locking device (4) connect in the cross-section type intracavity of right fan frame (24), its characterized in that: the outdoor fan frame is characterized by further comprising an attached locking device (3), wherein a lock pin of the attached locking device (3) is arranged on the outdoor side of the fan frame (2) and is suitable for moving between an opening position and a locking position, the lock pin is completely retracted to the fan frame (2) when the lock pin is located at the opening position, and at least one part of the lock pin extends out of the fixing frame (1) when the lock pin is located at the locking position.

2. The in-opening door as claimed in claim 1, wherein: the lock pin is a pin column (31), the lock attaching device (3) further comprises a mounting sleeve (33), the mounting sleeve (33) is fixed on the outdoor side of the lower end of the right fan frame (24), the pin column (31) penetrates through the mounting sleeve (33) and is suitable for moving between an opening position and a locking position along the vertical direction, a pin head (32) at the lower end of the pin column (31) is completely retracted to the fan frame (2) when the pin column is located at the opening position, and the pin head (32) at the lower end of the pin column (31) extends out of the fixing frame (1) when the pin column is located at the locking position.

3. The in-opening door as claimed in claim 2, wherein: attach lock device (3) and still include unblock shell fragment (35) and reset spring (36), the one end cantilever of unblock shell fragment (35) is fixed in installation cover (33), unblock shell fragment (35) have locking state and unblock state, unblock shell fragment (35) are last to have and are suitable for the through-hole that round pin post (31) passed, the through-hole size slightly is greater than round pin post (31) external diameter, works as unblock shell fragment (35) are in locking state, unblock shell fragment (35) are first angle with the horizontal direction, the through-hole pore wall support by leaning on in round pin post (31), works as unblock shell fragment (35) are in unblock state, unblock shell fragment (35) are less than the second angle of first angle with the horizontal direction, the through-hole pore wall with round pin post (31) have the clearance.

4. The in-opening door as claimed in claim 2, wherein: the top of the pin column (31) is provided with a pressing cap (34).

5. The in-opening door as claimed in claim 2, wherein: the lock attaching device (3) further comprises a wedge block (37), the wedge block (37) is fixed on the lower fixing frame (12) and is opposite to the pin column (31) in the horizontal direction, and the pin head (32) is provided with an inclined surface matched with the wedge block (37) on the side close to the fan frame (2).

6. The in-opening door as claimed in claim 1, wherein: the lock pin comprises an upper pin rod (391) and a lower pin rod (392), the lock-attaching device (3) further comprises an attached operating handle (38), an upper mounting sleeve and a lower mounting sleeve, the attached operating handle (38) is mounted on the outdoor side of the right fan frame (24), the lower end of the upper pin rod (391) is connected with the attached operating handle (38) and extends upwards to the vicinity of the upper fan frame (21), the upper end of the lower pin rod (392) is connected with the attached operating handle (38) and extends downwards to the vicinity of the lower fan frame (22), the upper mounting sleeve and the lower mounting sleeve are fixed on the outdoor side of the right fan frame (24) and are respectively distributed above and below the attached operating handle (38), the upper pin rod (391) and the lower pin rod (392) are respectively arranged in the upper mounting sleeve and the lower mounting sleeve and are suitable for moving between an opening position and a locking position along the vertical direction, and when the lock pin rod is located at the opening position, the upper pin head (3111) of the upper pin rod (391) is arranged, The lower pin head (3112) at the lower end of the lower pin rod (392) is completely retracted to the fan frame (2), and the upper pin head (3111) at the upper end of the upper pin rod (391) and the lower pin head (3112) at the lower end of the lower pin rod (392) are extended to the fixed frame (1) when the lower pin head is located at the locking position.

7. The in-opening door as claimed in claim 6, wherein: the upper mounting sleeve comprises a first upper mounting sleeve (3121) and a second upper mounting sleeve (3122), the first upper mounting sleeve (3121) is located at the top of the right fan frame (24), the second upper mounting sleeve (3122) is located between the first upper mounting sleeve (3121) and the auxiliary operating handle (38), the lower mounting sleeve comprises a first lower mounting sleeve (3124) and a second lower mounting sleeve (3123), the first lower mounting sleeve (3124) is located at the bottom of the right fan frame (24), and the second lower mounting sleeve (3123) is located between the first lower mounting sleeve (3124) and the auxiliary operating handle (38).

8. The in-opening door as claimed in claim 6, wherein: the lock attaching device (3) further comprises an upper pin boss (3101) and a lower pin boss (3102), wherein the upper pin boss (3101) and the lower pin boss (3102) are respectively fixed on the upper fixing frame (11) and the lower fixing frame (12) and are opposite to the upper pin rod (391) and the lower pin rod (392) in the horizontal direction so as to be respectively matched and locked with the upper pin head (3111) and the lower pin head (3112).

9. The in-opening door as claimed in claim 8, wherein: the upper pin head (3111) and the lower pin head (3112) both comprise pin head seats and pin head columns, the pin head columns are fixed on the pin head seats and extend out of the pin head seats along the horizontal direction, and the upper pin seat (3101) and the lower pin seat (3102) are respectively provided with transverse grooves so as to enable the pin head columns to enter the transverse grooves along the vertical direction.

10. The in-opening door as claimed in any one of claims 1 to 9, wherein: the fixed frame (1) comprises a fixed wooden frame (51) located on the indoor side, and the fan frame (2) comprises a first wooden frame (52) and a second wooden frame (53) located on the indoor side.

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