TW201604377A - Anti-drop device of screen window - Google Patents

Abstract

The present invention relates to an anti-drop device of screen window. The anti-drop device is installed at a lower frame of the screen window and includes a seat member, an operation button, and a swing piece. The center of the seat member is formed with a chamber. The chamber is formed with an coupling part and a pivotal part, the chamber is formed with a transversal notch, and the bottom thereof is formed with an opening. The operation button is disposed at the coupling part of the chamber and capable of transversally moving relative to the seat member, the operation button is formed with a toggle part protruding out of the notch of the seat member, and the bottom thereof is formed with a abutting part. The top end of the swing piece is formed with a pivotal part pivotally connected to the pivotal part of the seat member, the top end of the pivotal part is formed with a upwardly bearing part to be abutted against the abutting part of the operation button, and the bottom end of the pivotal part is formed with a block part capable of being unfolded and protruded out of the opening of the seat member, so as to allow the swing piece to utilize the weight of the block part to enable the bottom end of the block part to biasedly swing and unfold below the opening of the seat member, the operation button may be displaced, and the abutting part is abutted against the upwardly bearing part of the swing piece for allowing the swing piece to perform a leverage swinging and folding motion and allowing the bottom end of the block part to biasedly swing and upwardly displace. Accordingly, this invention has advantages of better safety, wider application, convenience in use, and stable operation.

Description

Screen preventing device

The invention relates to an anti-shedding device for a screen window, which mainly relates to a structure with better installation convenience and anti-falling reliability.

The front aluminum door and window are generally provided with a screen window for ventilation and insect intrusion prevention, and the screen window is disposed at the outermost side of the window, and two lateral inner forms are further disposed on the inner side of the screen window, and the screen window is generally provided with a recessed groove in the lower frame thereof. The wheel body can be assembled so that the screen window is inclined so that the top end of the screen is first embedded in the outer side of the frame on the outer frame of the frame, and then the screen window is guided so that the screen window can be used to embed the groove and the wheel of the lower frame by its gravity. The body can be engaged with the outer rail of the frame under the outer frame of the window, and if the screen window is removed, the screen window can be moved up to remove the slot and the wheel body of the screen window from the lower frame of the frame outer frame.

However, when the window is set in a high-rise building, if the child climbs the window and pushes the screen window, it can still cause the screen window to fall and harm the people under the building, and is more likely to cause the child to fall.

In order to improve the aforementioned inventors, the invention has a variety of anti-shedding devices such as the Chinese patent publications M427435, M425164, I358490, I358491, M414473, M386366, M386367, M382369, M373392, and also has patent publications M476179, M415966, M418967. , M406076, M398569, M394368... and other anti-shedding devices for screen screens, and the design mainly sets the anti-drop structure on the upper frame position of the screen, and can control the anti-shedding structure to abut against the top of the window frame to limit The screen window cannot be moved up to prevent the screen from falling off.

However, the aforementioned structure is generally higher than the height of the human body due to the height of the frame above the screen, which makes it difficult to control the absence of the anti-drop structure when installing or removing the cleaning, and causes people to climb up.

For example, the anti-shedding structure of the Chinese Patent Publication No. M395045 can be disposed under the screen window, and has a base disposed on the lower frame of the screen window, and is provided with a long slot and a pivot hole, and has a lever, and the lever respectively corresponds to the long slot. The pivot hole has a dial block, a pivot shaft, and a guiding block at one end, and the dial block protrudes from the front surface of the lower frame, so that the guiding block can be offset from the track embedded in the window frame by the pendulum by its weight The detachment is prevented, and the dial block is displaced along the long slot to move the guide block upward, and the lever is engaged with the positioning block of the long slot to facilitate the removal of the screen.

Although the foregoing structure can directly shift the lever yaw motion, the position of one of the levers of the lever can only be biased upward by a small distance, and if the upward yaw angle is too large, it will abut against the top surface of the base, causing the other end of the lever to be guided. The block cannot be vertically expanded downwards, and can only be deflected downward by a small angle, so that when the screen window is moved to a higher position, the guide block may be out of the frame unsafe due to the small downward distance, and the dial must be The operation is in the direction of the arc, and the operation direction does not conform to the habit of the linear toggle switch of the general user, and the operation is inconvenient.

The main object of the present invention is to provide an anti-drop structure which is arranged in the lower frame of the screen window, and can be biased at a large angle for better safety and easy operation.

The invention comprises a body, an operating button, a swinging block, and a central chamber of the seat body, and a joint portion and a pivoting portion are arranged in the chamber, and a lateral gap is provided in the chamber, and an opening is arranged in the lower portion; It is disposed at the position of the body chamber, and can correspond to the lateral displacement of the seat body, and is provided with a positioning portion protruding from the notch of the seat body, and an abutting portion is disposed below; and the pivoting portion is pivotally connected with the seat body. The pivoting portion is disposed above the pivoting portion and is disposed at a position opposite to the abutting portion of the operating button, and a retaining portion protruding from the opening of the seat is disposed under the pivoting portion, and the swinging block is The bottom end of the retaining portion is yawed downwardly under the seat opening by the weight of the retaining portion, and the operating button is displaced, and the abutting portion abuts against the top portion of the swinging block to make the swinging block be used as a lever biasing Fit and move the bottom end of the retaining portion to the yaw.

The anti-drop device of the present invention is disposed in the lower frame of the screen window, and the lower frame of the screen window can be disposed on the screen guide rail outside the outer frame, and the outer frame corresponding to the window guide rail has an inner window guide that can engage the inner window, and the outer frame The lower frame of the screen window can accommodate the slot of the screen wheel body and the anti-drop device, and the underside of the slot can be embedded in the position of the screen guide rail, and the slot can be provided with a notch and a joint for the handle portion of the anti-drop device. And the hole of the anti-drop device is provided with an engaging hole, and the anti-drop device is disposed in the bottom frame of the screen window, and the joint body is inserted into the lower frame of the screen and the joint hole of the seat body to fix the seat body under the screen window. On the box.

Further, the distance between the bottom end of the retaining portion of the swinging block and the pivoting portion of the swinging block of the present invention is greater than the distance between the top end of the supporting portion and the pivoting portion, and the bottom end of the blocking portion is provided with a sleeve groove for fitting the screen guide rail.

Further, the operating button of the present invention is provided with a sloped portion which is inclined from the side toward the center of the bottom end, and a first plane portion corresponding to the parallel portion of the seat body is disposed on the bottom end side of the inclined surface portion, and the swinging block is held. The top end of the portion has an arc surface that can abut against the inclined surface, and the second flat portion that is connected to the curved surface portion is disposed on the side of the top portion, and the inclined surface portion abuts against the curved surface portion when the swinging block is deployed, and the operation button is laterally When the displacement is performed, the inclined surface can be moved by the curved surface to pivot the swinging block, and when the second planar portion of the swinging block abuts against the first planar portion of the abutting portion, the swinging block can be offset to the corresponding horizontal level of the seat. Position.

Further, the seat body of the present invention has a top plate and a bottom plate, and is opened on one side of the bottom plate, and one end of the bottom plate can provide a swinging block to be deployed to a corresponding position of the corresponding body to abut against the abutting end of the swing block, and can limit the swing The block is expanded to the vertical angle of the corresponding seat.

Further, the seat joint portion of the present invention has a parallel horizontal plate corresponding to the lower part of the top plate, and the notch is disposed at the center of the horizontal plate, and the left and right sides of the top plate and the horizontal plate are provided with guiding grooves; A guiding portion is disposed between the holding portion and the abutting portion, and the guiding portion has a guiding piece that can be displaced in the guiding groove, and an elastic piece is disposed under the guiding piece, and the elastic piece can be moderately matched with the horizontal plate. The elastic force abuts to provide an operating button corresponding to the lateral displacement actuation stability of the seat.

Further, the present invention provides a positioning body above the guiding piece, and a positioning portion is disposed under the top plate of the seat body corresponding to the swinging block unfolding and folding position, and the operating button is displaced to the corresponding swinging block to expand and collapse the positioning body. Positioning can be engaged with the corresponding positioning portion to provide positioning stability.

Further, the seat body of the present invention can be combined and assembled by the first and second housings, and the slot and the insertion post are disposed at corresponding positions of the first and second housings, so that the operating button and the swinging block are first assembled in the first housing. After that, the first and second shells are docked and combined, and the assembly convenience is provided.

When the screen window of the invention is assembled on the outer frame, the swing block can be firstly folded, and the lower frame of the screen window can be unaffected by the swing block, so that the groove can be assembled on the screen guide rail, and the wheel body can be located at the outer frame screen guide rail position. And combining the operation button to move the swinging block to the position where the swinging block is deployed, and can be engaged by the positioning body and the corresponding positioning portion, so that the swinging block can be engaged with the screen guide rail by the weight of the retaining portion thereof, and the The screen window can still be laterally displaced on the screen guide rail of the outer frame, and if the screen window is inadvertently moved to disengage the screen slot from the screen guide rail, the retaining portion of the swing block can still be biased to engage with the screen guide rail, thereby preventing the screen window from being detached Outer frame.

When the invention is to be cleaned and removed, the operating button can be displaced by the dialing portion of the operating button, and the abutting portion can be engaged with the arcuate portion of the swinging block to fold the swinging block, and the first and second plane portions are engaged to make the swinging The abutting portion of the block is separated from the screen guide rail, and the positioning body can be engaged with the corresponding positioning portion, so that the lower frame of the screen window is moved up so that the retaining portion of the swinging block does not affect the take-up of the screen when the insert groove is separated from the screen guide rail.

The swinging block of the invention can be shifted downward to a large angle, and can have better applicability, and the retaining portion of the swinging block can be correspondingly used for large-scale yaw holding and outer frame screen guide rail when the screen window is moved to a higher position. The jointing can have better safety, and the invention can be operated by the action of the horizontal linear dialing and the dialing part, and can conform to the operation habits of ordinary people for better operation and convenience.

10‧‧‧Anti-shedding device
1‧‧‧ body
11‧‧‧First housing

111‧‧‧Slot
112‧‧‧Join hole
12‧‧‧ second housing

121‧‧‧ Insert
13‧‧ ‧ room
131‧‧‧ top board

132‧‧‧floor
133‧‧‧ gap
134‧‧‧ openings

135‧‧ ‧ Snap end
14‧‧‧ joints
141‧‧‧ horizontal board

142‧‧‧Transfer trough
143‧‧‧ Positioning Department
144‧‧‧ Positioning Department

15‧‧‧ pivotal department
2‧‧‧ operation button
21‧‧‧Driving Department

22‧‧‧Affiliation
221‧‧‧Bevel
222‧‧‧ First Plane

23‧‧‧Transfer Department
231‧‧‧Transfer film
232‧‧‧Elastic film

233‧‧‧ Positioning body
3‧‧‧Swing block
31‧‧‧ pivotal department

32‧‧‧Top Department
321‧‧‧Arc face
322‧‧‧ second plane

33‧‧‧Relief
331‧‧‧ socket
40‧‧‧ screens

4‧‧‧ Screen frame
41‧‧‧Inlay
42‧‧‧ top board

421‧‧‧ gap
422‧‧‧Join hole
43‧‧‧ wheel body

44‧‧‧ bolt
5‧‧‧Front frame
51‧‧‧ Screen guide

52‧‧‧Inner window guide
6‧‧‧Forms

The first figure is an exploded view of the screen preventing device of the first embodiment of the present invention.

The second drawing is a combination view of the screen preventing device of the first embodiment of the present invention.

The third drawing is a sectional view of the combination of the first embodiment corresponding to the second drawing A-A.

The fourth drawing is an exploded view of the screen window anti-drop device and the lower frame of the screen window in the first embodiment of the present invention.

The fifth figure is a combination view of the swing block folding and the screen preventing device and the lower frame of the screen window in the first embodiment of the present invention.

Figure 6 is a cross-sectional view of the first embodiment of the present invention in which the swinging block is folded and the screens are assembled above the outer frame.

Figure 7 is a cross-sectional view showing the screen frame of the first embodiment of the present invention assembled to the outer frame and the swing block.

The eighth figure is a schematic view of the swinging block yaw when the screen window is moved up in the first embodiment of the present invention.

The ninth embodiment is a schematic view of the swinging block of the anti-drop device according to the first embodiment of the present invention.

Fig. 10 is a schematic view showing the upward movement of the screen when the swing block of the anti-drop device of the first embodiment of the present invention is folded.

Figure 11 is an exploded view of the screen preventing device of the second embodiment of the present invention.

Fig. 12 is a combination view of the screen preventing preventing device of the second embodiment of the present invention.

Figure 13 is a cross-sectional view of the second embodiment corresponding to the twelfth diagram B-B.

Figure 14 is an exploded view of the lower frame of the screen and the lower frame of the screen according to the second embodiment of the present invention.

The fifteenth figure is a combination view of the screen window anti-shedding device and the lower frame of the screen window according to the second embodiment of the present invention.

Figure 16 is a cross-sectional view showing the screen frame of the second embodiment of the present invention assembled to the outer frame and the swing block.

Figure 17 is a schematic view showing the yaw block yaw when the screen window is moved up in the second embodiment of the present invention.

Fig. 18 is a schematic view showing the winding block of the anti-drop device according to the second embodiment of the present invention.

In the following embodiments, the functionally similar structures of the present invention are denoted by the same reference numerals. Referring to the first to sixth figures, the anti-drop device 10 of the first embodiment of the present invention includes a body 1, an operating button 2, a swinging block 3, and The base body 1 is butt-joined by the first and second housings 11, 12, and the slot 111 and the insertion post 121 are respectively disposed at corresponding positions of the first and second housings 11, 12, so that the operation button 2 and the swing block 3 can be arranged. After the first housing 11 is assembled, the first and second housings 11 and 12 are docked and combined, and the assembly convenience is provided. The central body 1 has a chamber 13 and a joint portion is disposed in the chamber 13 . 14. The pivoting portion 15 further has a top plate 131 above the chamber 13, a bottom plate 132 at the bottom, and a top plate 131 having a notch 133. The bottom plate 132 has an opening 134 on one side thereof, and the bottom plate 132 has a swing block 3 at one end thereof. The vertical position of the corresponding seat body 1 can abut against the abutting end 135 of the swinging block 3, and can limit the maximum angle of the swinging block 3, and the joint portion 14 has a parallel horizontal plate 141 corresponding to the lower surface of the top plate 131, and the notch 133 is disposed on the top plate. 131 and the center of the horizontal plate 141, and the top plate 131 and the horizontal plate 141 correspond to the left and right sides of the notch 133 The guiding groove 142 is disposed on the lower surface of the top plate 131 of the base body 1 corresponding to the swinging block 3, and the positioning positions 143 and 144 are respectively disposed at the folding positions.

The operation button 2 is disposed at the position of the chamber 13 of the base body 1, and is further provided with a positioning portion 21 protruding from the notch 133 of the seat body 1 , and an abutting portion 22 is disposed below, and between the dial portion 21 and the abutting portion 22 The guide portion 23 is provided with a slope portion 221 which is obliquely directed from the side toward the center of the bottom end, and a first plane portion 222 corresponding to the seat body 1 is disposed on the bottom end side of the slope portion 221, Further, the guiding portion 23 has a guiding piece 231 which is displaceable in the guiding groove 142, and an elastic piece 232 is disposed under the guiding piece 231, and the elastic piece 232 can be abutted with the horizontal plate 141 with a moderate elastic force to provide The operation knob 2 corresponds to the lateral displacement actuation stability of the base body 1, and a positioning body 233 engageable with the positioning portions 143, 144 is protruded above the guide piece 231.

The pivoting portion 31 is pivotally connected to the pivoting portion 31 of the seat body 1 , and the pivoting portion 31 is disposed above the pivoting portion 31 to abut the abutting portion 32 of the operating button 2 , and is pivotally connected. A portion 33 of the opening portion 134 of the seat body 1 is disposed below the portion 31, and a distance between the bottom end of the blocking portion 33 and the pivot portion 31 is greater than a distance between the top end of the bottom portion 32 and the pivot portion 31, and The swinging block 3 can yaw the bottom end of the retaining portion 33 to the lower side of the opening 134 of the seat body 1 by the weight of the retaining portion 33, and the retaining portion 33 has a sleeve groove 331 and the top portion 32 of the swinging block 3 The top end has an arc surface portion 321 which can abut against the inclined surface portion 221, and the second flat portion 322 which is coupled to the curved surface portion 321 is disposed on the side of the top portion 32, and the inclined surface portion 221 of the operation button 2 can be opened when the swinging block 3 is unfolded. Abuts against the curved surface portion 321 .

The anti-drop device 10 of the present invention is disposed in the lower frame 4 of the screen 40, and the lower frame 4 of the screen can be disposed on the screen guide 51 outside the outer frame 5, and the outer frame 5 is engageable in front of the screen guide 51. The inner window guide 52 of the inner window 6 and the lower frame 4 of the screen window can accommodate the wheel body 43 of the screen 40 and the recess 41 of the anti-drop device 10, and the underside of the recess 41 can be embedded in the screen guide 51, and The recessed groove 41 has a top plate 42, and the top plate 42 is provided with a notch 421 and an engaging hole 422 which can protrude from the latching portion 21 of the anti-drop device 10. The seat body 1 of the anti-drop device 10 is provided with an engaging hole 112 and is prevented from falling off. When the device 10 is disposed in the screen frame 4 of the screen frame 4, the frame body 1 can be fixed to the screen lower frame 4 by inserting the bolt 44 into the lower frame 4 of the screen and the engaging hole 112 of the base 1.

When the screen 40 of the present invention is assembled on the outer frame 5, the swinging block 3 can be firstly folded as shown in the fifth and sixth figures, and the lower frame 4 of the screen can be prevented from being affected by the swinging block 3, so that the inserting groove 41 can be assembled in the screen window. On the guide rail 51, and the wheel body 43 can be located at the position of the screen guide rail 51 of the outer frame 5, and after combination, the dialing portion 21 of the operating button 2 is actuated to the position where the swinging block 3 is deployed, as shown in FIG. The positioning body 233 and the corresponding positioning portion 143 are engaged and positioned, so that the swinging block 3 can be engaged with the screen guide rail 51 by the weight of the retaining portion 33, and the screen window 40 can still be used in the screen window of the outer frame 5. The guide rail 51 is laterally displaced.

Referring to the eighth figure, if the screen 40 is inadvertently moved to disengage the screen 41 from the screen guide 51, the retaining portion 33 of the swing block 3 can still be biased downwardly to engage with the screen guide 51, thereby preventing The screen 40 is separated from the outer frame 5 and can be prevented from falling off.

When the present invention is intended to clean and remove the screen 40, as shown in the ninth and tenth views, the operating portion 2 is displaced by the dial portion 21 of the operating button 2, and the inclined portion 221 of the abutting portion 22 can abut against the swinging block 3. The arcuate portion 321 folds the swinging block 3, and the first and second planar portions 222, 322 are fitted to disengage the blocking portion 33 of the swinging block 3 from the screen guide rail 51, and the positioning body 233 can be engaged with the corresponding positioning portion 144. Positioning, such that the lower frame 4 of the screen window is moved up so that the retaining portion 41 of the swinging block 3 does not affect the take-up of the screen 40 when the recess 41 is disengaged from the screen guide 51.

In this embodiment, the dialing portion 21 of the operating button 2 is disposed at a higher position above the lower frame 4 of the screen, and is not affected by the window guide 52 of the front outer frame 5 during operation, and the pointing portion 21 of the present invention can be linearly moved. It can be operated, it can conform to the general operating habits of the general operation, and the stowage portion 33 of the swinging block 3 can be biased to the vertical height of the corresponding seat body 1 according to the requirement, and the retaining portion can be ensured when the screen window 40 is moved to a higher position. 33 can still be yawed and engaged with the screen guide 51, which can have better safety and reliability, and can make the swing block 3 have a good working safety effect as a whole with a small volume.

Referring to the eleventh to fifteenth drawings, the second embodiment of the present invention is provided, and the second embodiment is similar to the first embodiment. The difference between the notch 133 of the base 1 and the dialing portion 21 of the operating button 2 is provided. The front and the lower frame 4 of the screen are provided with a notch 421 of the protruding portion 21 at the front, and as shown in the sixteenth embodiment, when the screen 40 is assembled to the frame 5, the swing can be performed in the same manner as in the first embodiment. The retaining portion 33 of the block 3 is combined with the screen guide 51, and if the screen 40 is inadvertently moved to cause the recess 41 to be disengaged from the guide rail 51 as shown in Fig. 17, the retaining portion 33 can still be moved downward again. When the screen guides 51 are combined and the screen 40 is to be removed, the operating button 2 can be displaced by the dialing portion 21 of the operating button 2 as shown in Fig. 18, and the swinging block 3 can be folded and the screen 40 can be removed.

Therefore, the present invention can have better operation convenience and stable operation effect, and the weight of the abutment portion 33 under the swinging block 3 of the present invention is greater than the weight of the upper holding portion 33, and the swinging block 3 can be borrowed. The weight of the abutting portion 33 is smoothly oscillated. It is not necessary to design the spacing between the bottom end of the abutting portion 33 of the swinging block 3 and the pivoting portion 31 to be smaller than the distance between the top end of the supporting portion 32 and the pivoting portion 31, and the foregoing embodiment is an illustration of the present invention. It is not intended to limit the invention, and equivalent changes in accordance with the spirit of the invention are also intended to fall within the scope of the invention.

10‧‧‧Anti-shedding device

1‧‧‧ body

11‧‧‧First housing

111‧‧‧Slot

112‧‧‧Join hole

12‧‧‧ second housing

121‧‧‧ Insert

13‧‧ ‧ room

131‧‧‧ top board

132‧‧‧floor

133‧‧‧ gap

134‧‧‧ openings

135‧‧ ‧ Snap end

14‧‧‧ joints

141‧‧‧ horizontal board

142‧‧‧Transfer trough

143‧‧‧ Positioning Department

144‧‧‧ Positioning Department

15‧‧‧ pivotal department

2‧‧‧ operation button

21‧‧‧Driving Department

22‧‧‧Affiliation

221‧‧‧Bevel

222‧‧‧ First Plane

23‧‧‧Transfer Department

231‧‧‧Transfer film

232‧‧‧Elastic film

233‧‧‧ Positioning body

3‧‧‧Swing block

31‧‧‧ pivotal department

32‧‧‧Top Department

321‧‧‧Arc face

322‧‧‧ second plane

33‧‧‧Relief

331‧‧‧ socket

Claims (10)

[Item 1] An anti-shedding device for a screen window, comprising:
a body, a central chamber, and a joint portion and a pivot portion are arranged in the chamber, and a lateral gap is provided in the chamber, and an opening is arranged below;
An operation button is disposed at the position of the body chamber, and corresponding to the lateral displacement of the seat body, and the positioning portion protruding from the notch of the seat body is disposed, and the abutting portion is disposed below;
a swinging block, the upper pivoting portion is pivotally connected to the pivoting portion of the seat body, and a top portion that can abut against the operating button abutting portion is disposed above the pivoting portion, and an expandable convex portion is disposed below the pivoting portion Due to the abutment of the seat opening, the swing block can slant the bottom end of the retaining portion to the lower side of the seat opening by the weight of the retaining portion, and the operating button can be displaced and the abutting portion can be abutted The top portion of the swinging block allows the swinging block to be yawed and combined to move the bottom end of the blocking portion. [Item 2] The anti-shedding device for the screen window according to the first aspect of the invention, wherein the distance between the bottom end of the retaining portion and the pivoting portion is greater than the distance between the top end of the supporting portion and the pivoting portion. [Item 3] The anti-falling device for the screen window according to the second aspect of the invention, wherein the anti-drop device is disposed in the lower frame of the screen, and the lower frame of the screen can be disposed on the screen guide outside the outer frame, and the outer frame corresponds to the screen guide The front window has an inner window guide that can engage the inner window, and the lower frame of the screen window can accommodate the slot of the screen wheel wheel body and the anti-drop device, and the underside of the slot can be embedded in the position of the screen guide rail, and the slot can be convex. The anti-drop device operates the notch of the button holding portion, and is provided with an engaging hole, and the seat body of the anti-drop device is provided with an engaging hole, and the anti-drop device is disposed under the screen frame by the engaging member when the anti-drop device is disposed in the lower frame of the screen window The joint hole of the frame and the seat body fixes the seat body on the lower frame of the screen window. [Item 4] The anti-shedding device for the screen window according to the third aspect of the patent application, wherein the notch of the seat body is disposed above the chamber, and the dialing portion of the operation button is disposed above the operation button, and the recessed frame of the lower frame of the screen window has a top plate. The gap of the lower frame of the screen window is set on the top plate. [Item 5] The anti-drop device for the screen window according to the third aspect of the patent application, wherein the notch of the seat body is disposed in front of the chamber, and the dial portion of the operation button is disposed in front of the operation button, and the gap of the lower frame of the screen window is disposed in the slot. In front. [Item 6] The anti-falling device for the screen window according to claim 3, 4 or 5, wherein the bottom end of the blocking portion of the swinging block is provided with a sleeve groove for fitting the screen guide rail. [Item 7] The anti-falling device for the screen window according to the sixth aspect of the invention, wherein the inclined portion of the bottom side of the operating button is obliquely inclined from the side toward the center of the bottom end, and the corresponding seat body is disposed on the bottom side of the inclined surface portion. a parallel first flat portion, the top end of the swinging block has a curved surface portion that can abut against the inclined surface portion, and a second flat portion that is coupled to the curved surface portion is disposed on the side of the holding portion, and the swinging block is deployed when the swinging block is deployed When the inclined surface is in contact with the curved surface, and the operating button is laterally displaced, the inclined surface can be moved by the curved surface to pivot the swinging block, and the second planar portion of the swinging block abuts the first planar portion of the abutting portion The swing block can be shifted to the corresponding horizontal folding position of the seat. [Item 8] The anti-shedding device for the screen window according to the seventh aspect of the invention, wherein the seat body has a top plate and a bottom plate, and the opening is arranged on one side of the bottom plate, and one end of the bottom plate is provided with a swinging block to be deployed to a vertical position of the corresponding seat body. By the end of the swing block. [Item 9] The anti-shedding device for the screen window according to the eighth aspect of the invention, wherein the seat joint portion has a parallel horizontal plate corresponding to the bottom of the top plate, and the notch is disposed at the center of the top plate and the horizontal plate, and the corresponding gap between the top plate and the horizontal plate is provided. The left and right sides have a guiding groove; the operating button is provided with a guiding portion between the pointing portion and the abutting portion, and the guiding portion has a guiding piece that can be displaced in the guiding groove, and below the guiding piece The elastic piece is disposed, and the elastic piece can be abutted against the horizontal plate with a moderate elastic force. [Item 10] The anti-shedding device for the screen window according to claim 9, wherein the guiding piece is convexly disposed above the positioning piece, and the positioning portion is disposed corresponding to the swinging block under the top plate of the seat body, and the operating button is displaced. The positioning body can be engaged with the corresponding positioning portion when the swinging block is deployed and folded.