CN209444209U - A kind of ventilating door for being easily installed and dismantling - Google Patents

Abstract

The utility model discloses a kind of ventilating doors for being easily installed and dismantling, including the first secondary doorframe and the second secondary doorframe, first rotating shaft, the second shaft, the first door body and the second door body；First rotating shaft is mounted on an edge of the first door body, and first rotating shaft is fixedly connected with the first door body, and the first door body is stretched out at the both ends of first rotating shaft；Second shaft is mounted on an edge of the second door body；Second shaft is fixedly connected with the second door body, and the second door body is stretched out at the both ends of the second shaft；One end of first rotating shaft and one end of the first secondary doorframe are rotatablely connected, and one end of the other end of first rotating shaft and the second secondary doorframe is rotatablely connected；One end of second shaft is rotatablely connected with the first secondary doorframe far from one end of first rotating shaft, and the other end of the second shaft and the second secondary doorframe are rotatablely connected far from one end of first rotating shaft；Ventilation hole is equipped in first door body and the second door body.The utility model can on the basis of not destroying existing facility Fast Installation.

Description

A kind of ventilating door for being easily installed and dismantling

Technical field

The utility model relates to technical field of buildings more particularly to a kind of ventilating doors for being easily installed and dismantling.

Background technique

Be fitted without air-conditioning and only fan in the students' dormitory of current most schools, some even without fan, and And no small window or Design of ventilation on the door in many rooms.It is eastern in order to prevent in noon and the night's rest of hot summer West is stolen, has to shut the door, and causes air not convection current, indoor sultry phenomenon.

Although existing a variety of simple doors are able to achieve ventilation anti-theft function, it needs to destroy existing facility during installation, disobeys The relevant regulations of anti-school exist simultaneously at high cost, the shortcomings that the practicability is poor.

How ventilating door to be installed on the basis of not destroying existing facility, be this field major issue urgently to be resolved it One.

Utility model content

One purpose of the utility model is to provide a kind of ventilating door for being easily installed and dismantling, to solve in the prior art The problem of, the utility model is easily installed and dismantles.

The utility model provides a kind of ventilating door for being easily installed and dismantling, wherein including the first secondary doorframe and second Secondary doorframe, first rotating shaft, the second shaft, the first door body and the second door body；

The first rotating shaft is mounted on an edge of first door body, and the first rotating shaft and first door body are solid Fixed connection, and first door body is stretched out at the both ends of the first rotating shaft；

Second shaft is mounted on an edge of second door body；Second shaft and second door body are solid Fixed connection, and second door body is stretched out at the both ends of second shaft；

One end of the first rotating shaft and one end of the first secondary doorframe are rotatablely connected, the other end of the first rotating shaft It is rotatablely connected with one end of the described second secondary doorframe；One end of second shaft and the first secondary doorframe are far from described first One end of shaft is rotatablely connected, the one end of the other end of second shaft and the second secondary doorframe far from the first rotating shaft Rotation connection；

Described first secondary doorframe includes first support bar, second support bar, the first screw rod and the first nut；

One end of the first support bar and the first rotating shaft are rotatablely connected, and the other end of the first support bar is equipped with First blind hole；One end of the second support bar and second shaft are rotatablely connected, and the other end of the second support bar is set There is the second blind hole；The first support bar and second support bar coaxial arrangement；One end of first screw rod is located at described In first blind hole, the other end of first screw rod is located in second blind hole；First nut is set in described first On screw rod, and first nut is connect with first screw flight；

Described second secondary doorframe includes third support rod, the 4th support rod, the second screw rod and the second nut；

One end of the third support rod and the first rotating shaft are rotatablely connected, and the other end of the third support rod is equipped with Third blind hole；One end of 4th support rod and second shaft are rotatablely connected, and the other end of the 4th support rod is set There is the 4th blind hole；The center line of the third support rod and the center line of the 4th support rod are located along the same line；It is described One end of second screw rod is located in the third blind hole, and the other end of second screw rod is located in the 4th blind hole；It is described Second nut is set on second screw rod, and second nut is connect with second screw flight；

Ventilation hole is equipped in first door body and second door body.

Optionally, the side of first nut is equipped with the first ratchet, and the quantity of first ratchet is multiple and multiple First ratchet is uniformly distributed around the center line of first nut；

The side of second nut is equipped with the second ratchet, the quantity of second ratchet be it is multiple, and multiple described the Two ratchets are uniformly distributed around the center line of second nut.

Optionally, the described first secondary doorframe further includes the first lock body；

First lock body is located at the first support bar close to one end of first nut；The lock of first lock body Tongue is inserted between two adjacent first ratchets in the state of locking；

Described second secondary doorframe further includes the second lock body；

Second lock body is located at the third support rod close to one end of second nut；The lock of second lock body Tongue is inserted between two adjacent second ratchets in the state of locking.

Optionally, the described first secondary doorframe further includes the first block；

The quantity of first block is two, and two first blocks are respectively and fixedly installed to the first support bar Close to one end of the first rotating shaft and the second support bar close to one end of second shaft；

Described second secondary doorframe further includes the second block；

The quantity of second block is two, and two second blocks are respectively and fixedly installed to the third support rod Close to one end of the first rotating shaft and the 4th support rod close to one end of second shaft.

Optionally, first block is equipped with the first protrusion, and first protrusion is cooperatively formed with first block One the first short slot for cooperating with door shield edges and corners；

Second block is equipped with the second protrusion, and second protrusion cooperatively forms one with second block and is used for With the second short slot of door shield edges and corners cooperation.

Optionally, in the first rotating shaft and limited block is equipped in second shaft.

Optionally, the limited block is equipped with threaded rod, and the threaded rod is connect with the first rotating shaft or the second shaft.

Optionally, first door body and second door body are formed by cross bar and vertical bar welding, the ventilation hole by The cross bar and the vertical bar surround.

Optionally, the vertical bar is telescopic rod, and the first rotating shaft and second shaft are telescopic rod.

Optionally, first door body is connected with second door body by locking bolt.

The utility model proposes the ventilating door for being easily installed and dismantling, the first secondary doorframe and the second secondary doorframe can be passed through Stretching is directed out to the side wall of existing doorframe or door opening, installs and dismantles and is very convenient.

By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other Feature and its advantage will become apparent.

Detailed description of the invention

It is combined in the description and the attached drawing for constituting part of specification shows the embodiments of the present invention, and And together with its explanation for explaining the principles of the present invention.

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 be the utility model proposes the first secondary doorframe structural schematic diagram；

Fig. 3 is the structural schematic diagram of first support bar；

Fig. 4 is the structural schematic diagram of second support bar；

Fig. 5 is the structural schematic diagram of third support rod；

Fig. 6 is the structural schematic diagram of the 4th support rod；

Fig. 7 is the axonometric drawing of the first nut；

Fig. 8 is the axonometric drawing of the second nut；

Fig. 9 is the structural schematic diagram of limited block；

Figure 10 is the axonometric drawing of the first block；

Figure 11 is the axonometric drawing of the second block.

Description of symbols:

The secondary doorframe of 1- first, the secondary doorframe of 2- second, 3- first rotating shaft, the second shaft of 4-, the first door body of 5-, 6- second Body, 7- limited block, 8- ventilation hole, 9- cross bar, 10- vertical bar；11- first support bar, 12- second support bar, the first screw rod of 13-, The first nut of 14-, the first lock body of 15-, the first block of 16-；The first blind hole of 111-；The second blind hole of 121-；The first ratchet of 141-； The first protrusion of 161-, the first short slot of 162-；21- third support rod, the 4th support rod of 22-, the second screw rod of 23-, the second spiral shell of 24- Mother, the second lock body of 25-, the second block of 26-；211- third blind hole；The 4th blind hole of 221-；The second ratchet of 241-；261- second is convex It rises, the second short slot of 262-；71- threaded rod.

Specific embodiment

The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited The scope of the utility model processed.

Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical Novel and its application or any restrictions used.

Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as part of specification.

It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.

Fig. 1 to Figure 11 is please referred to, present disclose provides a kind of ventilating doors for being easily installed and dismantling, wherein including first Secondary doorframe 1 and the second secondary doorframe 2, first rotating shaft 3, the second shaft 4, the first door body 5 and the second door body 6.First secondary doorframe 1 and the Second mate's doorframe 2 is used to be installed to existing doorframe from upper and lower ends, specifically, due to being mounted with phase on existing doorframe The both ends of the door body answered, the first secondary doorframe 1 and the second secondary doorframe 2 are located at the door shield position of existing doorframe, the utility model In so-called door shield position, refer to the part not contacted on doorframe in the prior art and with existing door body.The utility model Proposed in ventilating door, be that a ventilating door is added on existing doorframe, door body in the prior art still normal use, It is unaffected.

Specifically, the first rotating shaft 3 is mounted on an edge of first door body 5, the first rotating shaft 3 with it is described First door body 5 is fixedly connected, and first door body 5 is stretched out at the both ends of the first rotating shaft 3.In this way, passing through setting first Shaft 3 can be such that the first door body 5 rotates around the center line of first rotating shaft 3.Convenient for the switch of the first door body 5.

Please refer to Fig. 1, second shaft 4 is mounted on an edge of second door body 6, second shaft 4 with Second door body 6 is fixedly connected, and second door body 6 is stretched out at the both ends of second shaft 4.In this way, passing through setting Second shaft 4 can be such that the second door body 6 rotates around the center line of second shaft 4, convenient for the switch of the second door body 6.Specifically Ground, the ventilating door proposed in the utility model is when opening, the opening direction of the first door body 5 and the second door body 6 and existing Door body it is contrary, that is, if existing door body is opened inwardly, the first door body 5 and the second door body 6 are then towards external-open；If Some door body are towards external-open, then the first door body 5 and the second door body 6 are opened inwardly.When the ventilating door is closed, first door body 5 It is in the same plane with second door body 6.Specifically, the locking mode between the first door body 5 and the second door body 6 can be It is a variety of, it can such as be locked by locking bolt, carry out locking or being locked by chain by way of locking bolt, both lockings Mode belongs to conventional locking fashion, and those skilled in the art can be realized, and details are not described herein.

One end of the first rotating shaft 3 and one end of the first secondary doorframe 1 are rotatablely connected, the first rotating shaft 3 it is another One end and one end of the second secondary doorframe 2 are rotatablely connected.One end of second shaft 4 and the described first secondary doorframe 1 are separate One end of the first rotating shaft 3 is rotatablely connected, and the other end of second shaft 4 and the second secondary doorframe 2 are far from described the One end of one shaft 3 is rotatablely connected.In this way, passing through the first secondary doorframe 1, second secondary doorframe 2,4 shape of first rotating shaft 3 and the second shaft At a rectangle frame, the closing and opening of ventilating door can be realized as by the rotation of the first door body 5, the second door body 6.

Referring to Fig.1 and 2, the described first secondary doorframe 1 includes first support bar 11, second support bar 12, the first screw rod 13 and first nut 14.Specifically, the two sides of existing doorframe are pushed against respectively by first support bar 11 and second support bar 12, To achieve the purpose that Fast Installation.Specifically, one end of the first support bar 11 and the first rotating shaft 3 are rotatablely connected, The other end of the first support bar 11 is equipped with the first blind hole 111.One end of the second support bar 12 and second shaft 4 The other end of rotation connection, the second support bar 12 is equipped with the second blind hole 121.When it is implemented, first blind hole 111 Center line and the center line of second blind hole 121 are located along the same line.The first support bar 11 and second support Bar 12 is coaxially disposed, and the support force that so, it is possible to guarantee that the first 1 both ends of secondary doorframe are subject to is located along the same line, and can be prevented The problem of power that first secondary doorframe 1 is subject to is tilted and is fallen off.One end of first screw rod 13 is located at first blind hole 111 Interior, the other end of first screw rod 13 is located in second blind hole 121.First nut 14 is set in first spiral shell On bar 13, and first nut 14 is threadedly coupled with first screw rod 13.When it is implemented, first nut 14 is outer Diameter is greater than the diameter of the first blind hole 111, specifically, by rotating the first nut 14, it will be able to guarantee one end of the first screw rod 13 It is pushed against in the first blind hole 111 or the second blind hole 121, when one end of the first screw rod 13 is pushed against in the first blind hole 111, first Nut 14 is pushed against one end of second support bar 12；When one end of the first screw rod 13 is pushed against in the second blind hole 121, the first spiral shell Mother 14 is pushed against one end of first support bar 11.

For the ease of manufacturing, the described second secondary doorframe 2 and the first secondary doorframe 1 structure snd size having the same, tool Body, the described second secondary doorframe 2 includes third support rod 21, the 4th support rod 22, the second screw rod 23 and the second nut 24.It is described Second secondary doorframe 2 is for installing ventilating door from the bottom of existing doorframe.The work of second secondary doorframe 2 and the first secondary doorframe 1 It is identical to make principle.

Fig. 1 is please referred to, specifically, one end of the third support rod 21 and the first rotating shaft 3 are rotatablely connected, and described the The other end of three support rods 21 is equipped with third blind hole 211.One end of 4th support rod 22 and second shaft 4 rotation connect It connects, the other end of the 4th support rod 22 is equipped with the 4th blind hole 221.Specifically, the center line of the third blind hole 211 and The center line of four blind holes 221 is located along the same line, so, it is possible to guarantee the third support rod 21 and the 4th support rod 22 by Power to two sides doorframe is located along the same line.The stability of installation is advantageously ensured that, if doorframe is to the described second secondary doorframe 2 Support force is not located along the same line, and is easy to produce torsional moment and causes doorframe installation insecure.Further, the third The center line of support rod 21 and the center line of the 4th support rod 22 are located along the same line.One end of second screw rod 23 In the third blind hole 211, the other end of second screw rod 23 is located in the 4th blind hole 221；Second spiral shell Mother 24 is set on second screw rod 23, and second nut 24 is threadedly coupled with second screw rod 23.Specifically, institute The one end for stating the second screw rod 23 is pushed against the bottom of the third blind hole 211 or the 4th blind hole 221, when second screw rod 23 When one end is pushed against the bottom of the third blind hole 211, second nut 24 pushes against one end of the 4th support rod 22；When When one end of second screw rod 23 is pushed against the bottom of the 4th blind hole 211, second nut 24 is pushed against described One end of three supports 21.Specifically, it will be appreciated by those skilled in the art that since the both ends of the second screw rod 23 are located at third In blind hole 211 and in the 4th blind hole 221, no matter 24 whichaway of the second nut is twisted, can be realized third support rod 21 and the 4th support rod 22 effect on existing doorframe is held out against to two sides.When the first secondary doorframe 1 and the second secondary doorframe 2 are pacified After dress, ventilating door is installed.

Ventilation hole 8 is equipped in first door body 5 and second door body 6.It so, it is possible to guarantee that the ventilating door closes In the state of door, it can still guarantee that air is flowed through from ventilating door, to achieve the purpose that ventilation.In this way, in existing door body In the state of opening, by above-mentioned ventilating door, it can guarantee effect that is antitheft, and can divulging information.And be easily installed and dismantle, In the case where not damaging existing doorframe, fast quick-detach can be realized.

When it is implemented, first the ventilating door is placed in doorframe when installation, guarantee the center line and the of the first secondary doorframe 1 The center line of second mate's doorframe 2 is each perpendicular to the vertical plane of existing doorframe, it is of course also possible to by the first secondary doorframe 1 and the second secondary door Frame 2 is installed on the vertical plane of door opening.The installation site of the secondary doorframe 1 of adjustment first, that is, adjust the first support bar 11 and second The installation point of support rod 12；The installation site of the secondary doorframe 1 of adjustment second, that is, adjust the third support rod 21 and the 4th support rod 22 installation point.Then the first nut 14 and the second nut 24 are rotated respectively, both ends and the second secondary door until the first secondary doorframe 1 The both ends of frame 2 are all held out against on existing doorframe or door opening.

When disassembly, the first nut 14 and the second nut 24 are rotated respectively, make both ends and the second pair of the described first secondary doorframe 1 It is unclamped from existing doorframe or door opening at the both ends of doorframe 2.

The ventilation door that the utility model is proposed can be realized fast in the case where not damaging existing door body structure Speed installation and disassembly.It is simple in sturcture, ingenious in design, it is easy to use.

Optionally, Fig. 7 and Fig. 8 are please referred to, specifically, the reliability arbitrarily dismantled and installed in order to prevent is described The side of first nut 14 is equipped with the first ratchet 141, and the quantity of first ratchet 141 is multiple, and multiple first spine Tooth 141 is uniformly distributed around the center line of first nut 14.Specifically, the one side of first ratchet 141 is equipped with guiding Face, during installation during precession, convenient for tightening.And the one side opposite with the guide surface is perpendicular to first nut 14 end face.It is inverted and disassembles in this way, being beneficial to prevent the first nut 14.

The side of second nut 24 is equipped with the second ratchet 241, and the quantity of second ratchet 241 is multiple and more A second ratchet 241 is uniformly distributed around the center line of second nut 24.Specifically, the one of second ratchet 241 Side is equipped with guide surface, during installation during precession, convenient for tightening.And the one side opposite with the guide surface perpendicular to The end face of second nut 24.It is inverted and disassembles in this way, being beneficial to prevent the second nut 24.For the ease of production and Manufacture, first nut 14 and second nut 24 structure having the same and size.

Further, the described first secondary doorframe 1 further includes the first lock body 15.Further, first lock body 15 is located at The first support bar 11 is close to one end of first nut 14；The lock tongue of first lock body 15 is inserted in the state of locking Enter between two adjacent first ratchets 141.That is, first nut 14 has the side of the first ratchet 141 when installation First lock body 15 described in face.Described second secondary doorframe 2 further includes the second lock body 25.Second lock body 25 is located at the third Support rod 21 is close to one end of second nut 24；The lock tongue of second lock body 25 is inserted into two-phase in the state of locking Between adjacent second ratchet 241.That is, second nut 14 has described in the side face of the second ratchet 241 when installation Second lock body 25.After being installed, by 25 locking of the first lock body 15 and the second lock body, at this point, can prevent the first nut 14 with And second nut 24 disassembled by rotation and by ventilating door, improve the reliability of installation.Those skilled in the art can manage Solution, the first lock body 15 and the second lock body 25 are the prior art, and those skilled in the art can select properly as needed Lock, and then implement this programme.

Further, Figure 10 and Figure 11 are please referred to, the described first secondary doorframe 1 further includes the first block 16.Specifically, institute The quantity for stating the first block 16 is two, and it is close that two first blocks 16 are respectively and fixedly installed to the first support bar 11 One end of the first rotating shaft 3 and the second support bar 12 are close to one end of second shaft 4.Specifically, described first Block 16 is forced on the side wall of existing doorframe or door opening.

Described second secondary doorframe 2 further includes the second block 26.Specifically, the quantity of second block 26 be two, two A second block 26 is respectively and fixedly installed to the third support rod 21 close to one end of the first rotating shaft 3 and described Four support rods 22 are close to one end of second shaft 4.Specifically, second block 26 is forced into existing doorframe or door On the side wall in hole.Such as, the first block 16 and the second block 26 can be set to the material of great friction coefficient, advantageously ensures that peace The tightness of dress.For the ease of manufacturing, first block 16 and the second block 26 can be set to identical structure and Size.

Further, first block 16 is equipped with the first protrusion 161, first protrusion 161 and the first gear Block 16 cooperatively forms first short slot 162 for cooperating with door shield edges and corners.It is convex that second block 26 is equipped with second 261 are played, second protrusion 261 cooperatively forms one for lacking with door shield edges and corners cooperate second with second block 26 Slot 262.In this way, the ventilating door slid inward can be prevented by the first protrusion 161 of setting and the second protrusion 261.Further Ground is equipped with limited block 7 in the first rotating shaft 3 and in second shaft 4.The limited block 7 is existing for being mounted on The door shield position of doorframe, to prevent ventilating door from sliding in and out.That is, can be with limit by the first protrusion 161, the second protrusion 162 Block 7 cooperates, to prevent ventilating door from outwardly or inwardly sliding, to ensure that the fastness of installation.Further, Fig. 9 is please referred to, The limited block 7 is equipped with threaded rod 71, and the threaded rod 71 is connect with the first rotating shaft 3 or the second shaft 4.Specifically, The limited block 7 is flake structure, to prevent from impacting existing door body during installation.In addition, passing through limit Block 7, additionally it is possible to be defined by the slewing area of the first door body 5 and the second door body 6, with reach the enabling direction of ventilating door with The contrary effect of the enabling of existing door body.

Optionally, first door body 5 and second door body 6 are formed by cross bar 9 and 10 welding of vertical bar, the ventilation Hole 8 is surrounded by the cross bar 9 and the vertical bar 10.In this way, being conducive to ventilation.Further, the vertical bar 10 is telescopic rod, described First rotating shaft 3 and second shaft 4 are telescopic rod.Specifically, the vertical bar 10 includes the first vertical bar and the second vertical bar, the One vertical bar is equipped with coaxial mounting hole, and second vertical bar plugs in the mounting hole.In this way, can be realized as described perpendicular The elongation and shortening of bar 10.First rotating shaft 3 and the second shaft 4 can also be in a manner described by the first vertical bars and the second vertical bar structure At.It so, it is possible the size of adjustment the first door body 5 and the second door body 6 in the height direction, various sizes of doorframe can be suitble to Installation.

Although being described in detail by some specific embodiments of the example to the utility model, this field It is to be understood by the skilled artisans that example above merely to be illustrated, rather than in order to limit the scope of the utility model.This Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments It modifies.The scope of the utility model is defined by the following claims.

Claims (10)

1. a kind of ventilating door for being easily installed and dismantling, which is characterized in that including the first secondary doorframe (1) and the second pair doorframe (2), First rotating shaft (3), the second shaft (4), the first door body (5) and the second door body (6)；

The first rotating shaft (3) is mounted on an edge of first door body (5), the first rotating shaft (3) and described first Door body (5) is fixedly connected, and first door body (5) is stretched out at the both ends of the first rotating shaft (3)；

Second shaft (4) is mounted on an edge of second door body (6)；Second shaft (4) and described second Door body (6) is fixedly connected, and second door body (6) is stretched out at the both ends of second shaft (4)；

One end of the first rotating shaft (3) and one end of the first secondary doorframe (1) are rotatablely connected, the first rotating shaft (3) One end of the other end and the second secondary doorframe (2) is rotatablely connected；One end of second shaft (4) and the first secondary doorframe (1) one end far from the first rotating shaft (3) is rotatablely connected, the other end of second shaft (4) and the second secondary doorframe (2) one end far from the first rotating shaft (3) is rotatablely connected；

Described first secondary doorframe (1) includes first support bar (11), second support bar (12), the first screw rod (13) and the first nut (14)；

One end of the first support bar (11) and the first rotating shaft (3) are rotatablely connected, the first support bar (11) it is another One end is equipped with the first blind hole (111)；One end of the second support bar (12) and second shaft (4) are rotatablely connected, described The other end of second support bar (12) is equipped with the second blind hole (121)；The first support bar (11) and the second support bar (12) it is coaxially disposed；One end of first screw rod (13) is located in first blind hole (111), first screw rod (13) The other end is located in second blind hole (121)；First nut (14) is set on first screw rod (13), and described First nut (14) is threadedly coupled with first screw rod (13)；

Described second secondary doorframe (2) includes third support rod (21), the 4th support rod (22), the second screw rod (23) and the second nut (24)；

One end of the third support rod (21) and the first rotating shaft (3) are rotatablely connected, the third support rod (21) it is another One end is equipped with third blind hole (211)；One end of 4th support rod (22) and second shaft (4) are rotatablely connected, described The other end of 4th support rod (22) is equipped with the 4th blind hole (221)；The center line and the described 4th of the third support rod (21) The center line of support rod (22) is located along the same line；One end of second screw rod (23) is located at the third blind hole (211) Interior, the other end of second screw rod (23) is located in the 4th blind hole (221)；Second nut (24) is set in described On second screw rod (23), and second nut (24) is threadedly coupled with second screw rod (23)；

Ventilation hole (8) are equipped in first door body (5) and second door body (6).

2. the ventilating door according to claim 1 for being easily installed and dismantling, which is characterized in that first nut (14) Side is equipped with the first ratchet (141), the quantity of first ratchet (141) be it is multiple, and multiple first ratchets (141) around The center line of first nut (14) is uniformly distributed；

The side of second nut (24) is equipped with the second ratchet (241), and the quantity of second ratchet (241) is multiple, and Multiple second ratchets (241) are uniformly distributed around the center line of second nut (24).

3. the ventilating door according to claim 2 for being easily installed and dismantling, which is characterized in that the described first secondary doorframe (1) It further include the first lock body (15)；

First lock body (15) is located at the one end of the first support bar (11) close to first nut (14)；Described first The lock tongue of lock body (15) is inserted between two adjacent first ratchets (141) in the state of locking；

Described second secondary doorframe (2) further includes the second lock body (25)；

Second lock body (25) is located at the one end of the third support rod (21) close to second nut (24)；Described second The lock tongue of lock body (25) is inserted between two adjacent second ratchets (241) in the state of locking.

4. the ventilating door according to claim 2 for being easily installed and dismantling, which is characterized in that the described first secondary doorframe (1) It further include the first block (16)；

The quantity of first block (16) is two, and two first blocks (16) are respectively and fixedly installed to described first Strut (11) is close to the one end of the first rotating shaft (3) and the second support bar (12) close to the one of second shaft (4) End；

Described second secondary doorframe (2) further includes the second block (26)；

The quantity of second block (26) is two, and two second blocks (26) are respectively and fixedly installed to the third branch Strut (21) is close to the one end of the first rotating shaft (3) and the 4th support rod (22) close to the one of second shaft (4) End.

5. the ventilating door according to claim 4 for being easily installed and dismantling, which is characterized in that on first block (16) Equipped with first raised (161), described first raised (161) and first block (16) cooperatively form one and are used for and door shield rib The first short slot (162) cooperated at angle；

Second block (26) is equipped with second raised (261), and described second raised (261) are matched with second block (26) It closes and forms second short slot (262) for cooperating with door shield edges and corners.

6. the ventilating door according to claim 1 for being easily installed and dismantling, which is characterized in that on the first rotating shaft (3) Limited block (7) are equipped with on second shaft (4).

7. the ventilating door according to claim 6 for being easily installed and dismantling, which is characterized in that set on the limited block (7) Have threaded rod (71), the threaded rod (71) connect with the first rotating shaft (3) or the second shaft (4).

8. the ventilating door according to claim 1 for being easily installed and dismantling, which is characterized in that

First door body (5) and second door body (6) are formed by cross bar (9) and vertical bar (10) welding, the ventilation hole (8) it is surrounded by the cross bar (9) and the vertical bar (10).

9. the ventilating door according to claim 8 for being easily installed and dismantling, which is characterized in that the vertical bar (10) is flexible Bar, the first rotating shaft (3) and second shaft (4) are telescopic rod.

10. -9 described in any item ventilating doors for being easily installed and dismantling according to claim 1, which is characterized in that described first Door body (5) is connected with second door body (6) by locking bolt.