LU102930B1

LU102930B1 - Prefabricated building structure

Info

Publication number: LU102930B1
Application number: LU102930A
Authority: LU
Inventors: Yan Jia; Jincan Song
Original assignee: Univ Zhengzhou Aeronautics
Priority date: 2022-01-27
Filing date: 2022-04-15
Publication date: 2022-10-17
Also published as: CN115247528B; CN115247528A

Abstract

The disclosure relates to the field of building doors and Windows, in particular to a prefabricated building structure, comprising a building body, a window frame, a window, an adjusting device and a sealing strip plate. The window is hinged to the window frame; the adjusting device includes an sensor plate/ a transmission assembly, and a differential assembly , the window frame is provided with a through hole connecting the inside and outside of the building body, and the sensor plate blocks the through hole; the transmission assembly includes a transmission shaft, a first friction ring and a second friction ring, the first friction ring is installed on the transmission shaft and slides synchronously and horizontally with the transmission shaft; the second friction ring is in frictional contact with another position of the window; when there is a strong wind outside the building body to decrease the air pressure, the middle of the sensor plate protrudes to the outside of the building body under the action of the air pressure inside the building body, so that the drive shaft moves to the preset position, and thus, when the window rotates to the outside of the building body under the action of air pressure in the building body, the first friction ring and the second friction ring have different rotational speeds, and then the differential assembly promotes the sealing strip plate to

Description

BL-5479 LU102930

PREFABRICATED BUILDING STRUCTURE Technical Field

[0001] The disclosure relates to the field of building doors and windows, in particular to a prefabricated building Structure. Background Art

[0002] Among the windows of existing prefabricated buildings, side-opening windows have the characteristics of small installation space, so they are widely used in small spaces such as corridors, toilets, and kitchens in buildings. However, due to their structural characteristics, when encountering strong winds, the windows are prone to shake and cause collisions, resulting in broken glass and falling, which poses a great threat to the safety of people downstairs and wastes resources.

[0003] There are two existing ways to avoid the above problems:

1. the wind bracing is installed on the side-opening window to increase the resistance of opening and closing the window, but this method will lead to problems such as excessive resistance and easy damage when opening and closing the window; 2. the switch handle is installed on the side-opening window, in which after closing the window, the window is 1

BL-5479 LU102930 locked by the handle, but this method will increase the operation steps when opening and closing the window, and once the operator forgets to turn off the switch, it may still cause the above problems.

DISCLOSURE

[0004] The disclosure provides a prefabricated building structure to solve the problem that windows are prone to sway and collide under strong winds, posing potential safety hazards, while taking into account the smooth switching and simple operation.

[0005] A prefabricated building structure of the disclosure adopts the following technical solutions.

[0006] A prefabricated building structure includes a building body, a window frame, a window, an adjusting device and a sealing strip plate, in which the window frame is fixedly installed on the building body; the window has a hinged side and an opening and closing side, in which the hinged side of the window is hinged to the window frame around a vertical axis so as to make the opening and closing side of the window open and close around the vertical axis, the window is in a closed state when it is rotated to be parallel to a wall of the building body, the window frame prevents the further rotation of the window toward an inside of the building body 2

BL-5479 LU102930 when the window is rotated to be in the closed state, and the window is closed in a initial state; the sealing strip plate is installed on the window frame, and is on a side of the window frame close to the opening and closing side of the window; the adjusting device includes a sensor plate, a transmission assembly, and a differential assembly, the window frame is provided with a through hole connecting the inside and an outside of the building body, and the sensor plate blocks the through hole, in which when there is a strong wind outside the building body to decrease an air pressure, a middle part of the sensor plate protrudes to the outside of the building body under an action of the air pressure inside the building body, and the window rotates to the outside of the building body or has a tendency to rotate to the outside of the building body under the action of the air pressure inside the building body; the transmission assembly includes a transmission shaft, a first friction ring and a second friction ring, in which the transmission shaft is horizontally slidably installed on the window frame, two ends of the transmission shaft are a first end and a second end, the first end of the transmission shaft is close to the hinged side of the window with the window frame, the first friction ring is installed on the first end of the transmission shaft, and the first friction ring slides synchronously and horizontally with the transmission shaft; 3

BL-5479 LU102930 the first friction ring is in frictional contact with a horizontal side of the window, the second friction ring is rotationally installed in the window frame, and the second friction ring is in frictional contact with another position on the horizontal side of the window; when the sensor plate is in the initial state, the transmission shaft is at an initial position, when the middle part of the sensor plate protrudes outward from the building body, the transmission shaft slides toward the hinged side close to the window to a preset position, the first friction ring and the second friction ring have a same rotational direction and a same rotational speed when the transmission shaft is at the initial position and have a same rotational direction and different rotation speeds when the transmission shaft is in the preset position; and when the first friction ring and the second friction ring have different rotation speeds, the differential assembly promotes the sealing strip plate to move or deform to the opening and closing side of the window so as to press the window tightly.

[0007] Further, the first friction ring rotates in a first direction and drives the transmission shaft to rotate in the first direction when the window is rotationally opened to the outside of the building body, and the first friction ring rotates in a direction opposite to the first direction and 4

BL-5479 LU102930 idles on the transmission shaft when the window is rotationally closed to the inside of the building body; the differential assembly includes a first gear, a second gear, a lower top block, an upper top block and a translation block, in which the first gear is slidably installed on the transmission shaft and synchronously rotates with the transmission shaft, the second gear is fixedly connected with the second friction ring, and the first gear and the second gear have a same size and the same modulus; when the transmission shaft is at the preset position, a rotation speed of the first friction ring is smaller than that of the second friction ring, so that a rotational speed of the first gear is less than that of the second gear; the lower top block, the upper top block and the translation block are all slidably installed on the window frame along a second direction, and the window frame prevents the lower top block, the upper top block and the translation block axially sliding along an axial direction of the transmission shaft; the translation block meshes with the second gear, the translation block and the upper top block are connected by a synchronizing block, one end of the synchronizing block is fixedly connected with the upper top block, and the other end of the synchronizing block is slidably installed on the translation block along a third direction; a side surface of the upper top block close to the sealing strip plate is an

BL-5479 LU102930 inclined surface, and when the upper top block moves along a direction of the sealing strip plate, the sealing strip plate is pushed up by the inclined surface of the upper top block, so that the sealing strip plate moves or deforms to the opening and closing side of the window and then presses the window tightly; and a side of the lower top block meshes with the first gear, and another side of the lower top block meshes with the upper top block through helical teeth through which the upper top block is driven by the translation block to move toward the window along inclined surfaces of the helical teeth when the rotational speed of the first gear is smaller than that of the second gear.

[0008] Further, the transmission assembly also includes a sliding rod frame and a wedge plate, in which the sliding rod frame can be slidably installed on the window frame along the second direction, and one side of the sliding rod frame is fixedly installed at a center of a side of the sensor plate facing to the inside of the building body; the wedge plate is axially and slidably installed on the window frame along the transmission shaft, an end of the wedge plate close to the hinged side of the window is rotationally connected to the transmission shaft, the wedge plate passes through the sliding rod frame, a side of the wedge plate away from the hinged side of the window is an inclined surface, when 6

BL-5479 LU102930 the sliding rod frame along with a center of the sensor plate moves away from the building body, the wedge plate is pushed up by the inclined surface of the wedge plate to move toward the hinged side of the window, thereby driving the transmission shaft to slide toward the hinged side of the window to the preset position.

[0009] Further, a return spring is provided between the wedge plate and the window frame, in which the return spring is squeezed when the wedge plate pushes the transmission shaft to slide close to the hinged side of the window, and the return spring promotes the wedge plate to drive the transmission shaft to move to the initial position after the sensor plate restoring deformation.

[0010] Further, the transmission shaft is provided with a synchronization groove extending axially along the transmission shaft, an inner ring of the first gear is provided with clamping teeth which is convex, the inner ring of the first gear is sleeved on the transmission shaft, and the clamping teeth are slidably installed in the synchronization groove, so that the first gear rotates synchronously with the transmission shaft and can slide relative to the transmission shaft along the axial direction of the transmission shaft.

[0011] Further, an inner ring of the first friction ring is 7

BL-5479 LU102930 provided with a first ratchet, an outer circumference of the first end of the transmission shaft is provided with a second ratchet which is a retractable structure, the first friction ring is sleeved on the first end of the transmission shaft, and the first ratchet meshes with the second ratchet; when the first friction ring rotates in the first direction, the first friction ring drives the transmission shaft to rotate in the first direction through the meshing of the first ratchet and the second ratchet; When the first friction ring rotates in the opposite direction to the first direction, the first ratchet of the inner ring of the first friction ring continuously squeeze the second ratchet, preventing the transmission shaft from rotating synchronously with the first friction ring.

[0012] Further, the first friction ring is rotatably mounted on the first end of the transmission shaft, and a one-way bearing is provided between the first friction ring and the first end of the transmission shaft, the one-way bearing makes the transmission shaft rotate synchronously with the first friction ring when the first friction ring rotates in the first direction, and the one-way bearing makes the first friction ring rotates idly when the first friction ring rotates in the opposite direction to the first direction.

[0013] Further, the sealing strip plate can be slidably 8

BL-5479 LU102930 installed on the window frame along a fourth direction, a tension spring is provided between the sealing strip plate and the window frame, in which the sealing strip plate extends the tension spring to store force while pressing the opening and closing side of the window tightly through a push of the upper top block; and after the strong wind stops outside the building body, the window can be rotated toward the inside of the building body, the tension spring drives the sealing strip plate to reset, and at the same time, the sealing strip plate presses the upper top block to reset.

[0014] Further, the prefabricated building structure also includes a top pressing plate and a handle, the top pressing plate can be slidably installed on the opening and closing side of the window along the fourth direction, the top pressing plate has a top pressing position and a releasing position, and the top pressing position is in a side of the releasing position away from the hinged side of the window; the handle is rotationally installed on the window, the handle has a locked position and an unlocked position when rotated, and the top pressing plate is in the top pressing position when the handle is rotated to the locked position, and the top pressing plate is allowed to move toward the hinged side of the window to the releasing position when the handle is rotated to the unlocked position; when the handle 9

BL-5479 LU102930 is in the locked position, the sealing strip plate pushes the top pressing plate tightly through the push of the upper top block, and when the handle is turned to the unlocking position, the top pressing plate is moved to the hinged side of the window through the push of the sealing strip plate, which reduces the pushing force between the sealing strip plate and the top pressing plate, thereby allowing the window to be further rotated and opened to the outside of the building body.

[0015] Further, there are two adjusting devices, which are respectively arranged on both ends of the sealing strip plate.

[0016] The advantageous effects of the disclosure are as follows: the window of the prefabricated building structure of the disclosure does not need to be additionally locked when opening and closing, and when there is no wind outside the building body, the air pressure inside and outside the building body is balanced, the sensor plate remains in the initial state, and the transmission shaft is in the initial position, when the window is opened and closed, the first friction ring and the second friction ring are driven to rotate at the same speed, so that the sealing strip plate will not cause a larger resistance to the rotation of the window, causing a smooth rotation of the window; when the air pressure decreases due to the strong wind, the middle

BL-5479 LU102930 part of the sensor plate protrudes to the outside of the building body under the action of the air pressure inside the building body, so that the transmission shaft moves to the preset position, and when the window rotates to the outside of the building body under the action of the air pressure inside the building body, the first friction ring and the second friction ring have different rotational speeds, and through the differential assembly, the sealing strip plate moves or deforms toward the opening and closing side of the window to push the window tightly, preventing the window from further rotating and opening to the outside of the building body.

[0017] Further, the sealing strip plate only pushes the window tightly when there is a strong wind outside the building body, which reduces the wear and tear caused by the frequent opening and closing of the window and prolongs its service life. Brief Description of Drawings

[0018] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the disclosure or the prior art, hereinafter, a brief introduction for the embodiments or the drawings needed in the description of the prior art is given. Obviously, the drawings in the following 11

BL-5479 LU102930 description are only some embodiments of the disclosure, and other drawings may be obtained based on these drawings without any creative work for those skilled in the art.

Fig. 1 is schematic view of the overall structure of the embodiment of the prefabricated building structure according to the disclosure; Fig. 2 is a schematic structural view of a window, a window frame and an adjusting device in an embodiment of the prefabricated building structure according to the disclosure; Fig. 3 is a structural cross-sectional view of a window, a window frame and an adjusting device in an embodiment of the prefabricated building structure according to the disclosure; Fig. 4 is the enlarged schematic view at Part A in Fig. 3; Fig. 5 1s a schematic structural view of an sensor plate and an adjusting device in an embodiment of the prefabricated building structure according to the disclosure; Fig. 6 is a schematic exploded schematic view of the structure of the sensor plate and the adjusting device in the embodiment of the prefabricated building structure sensor; Fig. 7 is a schematic view of the installation position of the corresponding adjusting device on the window frame 4 in the embodiment of the prefabricated building structure sensor; 12

BL-5479 LU102930 Fig. 8 is an exploded schematic view of a window, a sealing strip plate, a top pressing plate and a handle in an embodiment of the fabricated building structure sensor; and Fig. 9 is the enlarged schematic view at Part B in Fig.

8.

[0019] In drawings: 1, building body; 2, window; 21, handle; 22, top pressing plate; 23, top pressing block; 24, hinge column; 25, accommodation groove; 26, hinge hole; 311, sensor plate; 312, slide rod frame; 321, wedge plate; 322, rotating hole; 33, transmission shaft; 331, journal; 332, return spring; 333, synchronization groove; 334, second ratchet; 335, first ratchet; 336, first friction ring; 34, first gear; 341, clamping teeth; 35, second gear; 352, second friction ring; 361, lower top block; 362, upper top block; 363, synchronization block; 37, translation block; 371, sliding groove; 4, window frame; 41, sealing strip plate; 42, tension spring; 43, sixth limiting groove; 44, through hole; 451, mounting post; 452, fifth limiting groove; 453, mounting hole; 456, second limiting groove; 457, first limiting groove; 458, third limiting groove; 459, fourth limiting groove. Best Mode

[0020] The technical solutions in the embodiments of the disclosure will be clearly and completely described below with reference to the accompanying drawings in the 13

BL-5479 LU102930 embodiments of the disclosure. Obviously, the described embodiments are only a part of the embodiments of the disclosure, rather than all the embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the disclosure shall be included in the protection scope of the disclosure.

[0021] As shown in Figs. 1-9, the disclosure provides an embodiment of the prefabricated building structure, which includes a building body 1, a window frame 4, a window 2, an adjusting device and a sealing strip plate 41, in which a hole for installing the window frame 4 and the window 2 is reserved on the wall of the building body 1; the window frame 4 1s fixedly installed on hole of the building body 1; the window 2 is embedded in a space surrounded by the window frame 4, and has a right side as a hinged side and a left side as an opening and closing side, in which the hinged side of the window is hinged to the window frame 4 around a vertical axis so as to make the opening and closing side of the window 2 open and close around the vertical axis, the window 2 is in a closed state when rotated to be parallel to a wall of the building body 1, the window frame 4 prevents the further rotation of the window 2 toward an inside of the building body when the window 2 is rotated to be in the closed state, and specifically, the window frame 4 is 14

BL-5479 LU102930 provided with a baffle which prevents the window 2 from being further rotated to the inside of the building body 1 from the closed state; and the window is closed in a initial state.

[0022] The sealing strip plate 41 is installed on the window frame 4, is on a side of the window frame 4 close to the opening and closing side of the window 2, and has a certain preload friction force with the opening and closing side of window 2; the adjusting device includes a sensor plate 311, a transmission assembly, and a differential assembly, the window frame 4 is provided with a through hole 44 connecting the inside and an outside of the building body 1, and the sensor plate 311 blocks the through hole 44, in which when there is a strong wind outside the building body 1 to decrease an air pressure, a middle part of the sensor plate 311 protrudes to the outside of the building body under an action of the air pressure inside the building body, and the window 2 rotates to the outside of the building body 1 or has a tendency to rotate to the outside of the building body 1 under the action of the air pressure inside the building body 1; the transmission assembly includes a transmission shaft 33, a first friction ring 336 and a second friction ring 352, the through hole 44 is provided with a mounting post 451 extending left and right, the mounting post 451 is provided with a mounting hole 453 extending left and right, the

BL-5479 LU102930 transmission shaft 33 is slidably installed in the mounting hole 453 left and right, and the right end and the left end of the transmission shaft 33 are the first end and the second end respectively, the first end of the transmission shaft 33 is close to the hinged side of the window 2 and the window frame 4, the first end of the transmission shaft 33 passes through the mounting hole 453 and extends to the horizontal side of the window 2. The first friction ring 336 is installed on the first end of the transmission shaft 33, and the first friction ring 336 slides synchronously and horizontally with the transmission shaft 33; the first friction ring 336 is in frictional contact with a horizontal side of the window 2, the second friction ring 352 is rotationally installed in the window frame 33 around the axis of the transmission shaft 33, and the second friction ring 352 is in frictional contact with another position on the horizontal side of the window 2, the first friction ring 336 and the second friction ring 352 rotate in a same direction when the window 2 rotates; when the sensor plate 311 is in the initial state, the transmission shaft 33 is at an initial position, when the middle part of the sensor plate 311 protrudes outward from the building body 1, the transmission shaft 33 slides toward the hinged side close to the window 2 to a preset position; the first friction ring 336 is at the right side of the second friction ring 352, and the first 16

BL-5479 LU102930 friction ring 336 is smaller than the second friction ring 352, which makes the first friction ring 336 and the second friction ring 352 have a same rotational speed when the transmission shaft 33 is at the initial position and have different rotation speeds when the transmission shaft 33 is in the preset position; and when the first friction ring 336 and the second friction ring 352 have different rotation speeds, the differential assembly promotes the sealing strip plate 41 to move or deform to the opening and closing side of the window so as to press the window 2 tightly.

[0023] In the embodiment, the first friction ring 336 rotates in a first direction and drives the transmission shaft 33 to rotate in the first direction when the window 2 is rotationally opened to the outside of the building body 1, and the first friction ring 336 rotates in a direction opposite to the first direction and idles on the transmission shaft 33 when the window 2 is rotationally closed to the inside of the building body 1, in which the first direction is the clockwise direction from the hinged side of the window 2 to the opening and closing side. The differential assembly includes a first gear 34, a second gear 35, a lower top block 361, an upper top block 362 and a translation block 37, the window frame 4 is provided with a first limiting groove 457 and a second limiting groove 456, the first gear 34 is 17

BL-5479 LU102930 slidably installed on the transmission shaft 33 and synchronously rotates with the transmission shaft33, the first gear 34 is rotationally installed in the first limiting groove 457 , and the first limiting groove 457 prevents the first gear 34 from sliding left and right along the transmission shaft 33. The second gear 35 is fixedly connected with the second friction ring 352, and the second gear 35 and the second friction ring 352 are both rotationally mounted on the second limiting groove 456, and the second limiting groove 456 prevents the second gear 35 and the second friction ring 352 from sliding left and right; and the first gear 34 and the second gear 35 have a same size and the same modulus.

When the transmission shaft 33 moves from the initial position to the preset position, the first friction ring 336 is driven to move toward the hinged side close to the window 2, so that a rotation speed of the first friction ring 336 is smaller than that of the second friction ring 352, and so that a rotational speed of the first gear 34 is less than that of the second gear 35. The lower top block 361, the upper top block 362 and the translation block 37 are all slidably installed on the window frame 4 along a second direction, and the window frame 4 prevents the lower top block 361, the upper top block 362 and the translation block 37 axially sliding along an axial direction of the transmission shaft 33. Specifically, the window frame 4 is 18

BL-5479 LU102930 provided with a third limiting groove 458 communicating with the first limiting groove 457 and a fourth limiting groove 459 communicating with the second limiting groove 456, the lower top block 361 and the upper top block 362 are installed in the third limiting groove 458, the third limiting groove 458 prevents the lower top block 361 and the upper top block 362 from moving left and right and allows the lower top block 361 and the upper top block 362 to slide in the second direction, the translation block 37 is installed in the fourth limiting groove 459, the fourth limiting groove 459 prevents the translation block 37 from moving left and right and allows the translation block 37 to slide in the second direction, and sides of the third limiting groove 458 and the fourth limiting groove 459 close to the sealing strip plate 41 are connected, wherein the second direction is the direction from front to back, that is, the direction from the inside of the building body 1 to the outside.

The translation block 37 meshes with the second gear 35, the translation block 37 and the upper top block 362 are connected by a synchronizing block 363, one end of the synchronizing block 363 is fixedly connected with the upper top block 362, and the other end of the synchronizing block 363 is slidably installed on a sliding groove 371 along a third direction, so that the upper top block 362 moves in the second direction in synchronization with the translation 19

BL-5479 LU102930 block 37, in which the third direction is the up and down direction. A side surface of the upper top block 362 close to the sealing strip plate 41 is an inclined surface which is high on the left and low on the right, and when the upper top block 362 moves along a direction of the sealing strip plate 41, the sealing strip plate 41 is pushed up by the inclined surface of the upper top block 362, so that the sealing strip plate 41 moves right or deforms to push the opening and closing side of the window 2 tightly; and a side of the lower top block 361 meshes with the first gear 34, and another side of the lower top block 361 meshes with the upper top block 362 through helical teeth through which the upper top block 362 is driven by the translation block 37 to move toward the window 2 along inclined surfaces of the helical teeth when the rotational speed of the first gear 34 is smaller than that of the second gear 35.

[0024] Further, the transmission assembly also includes a sliding rod frame 312 and a wedge plate 321, in which the sliding rod frame 312 can be slidably installed on the window frame 4 along the second direction, and one side of the sliding rod frame 312 is fixedly installed at a center of a side of the sensor plate 311 facing to the inside of the building body 1. Specifically, the mounting post 451 is provided with a fifth limiting groove 452 extending along

BL-5479 LU102930 the second direction, the sliding rod frame 312 is slidably installed in the fifth limiting groove 452 along the second direction, and the fifth limiting groove 452 prevents the sliding rod frame 312 from moving left and right.

The wedge plate 321 is axially and slidably installed on the window frame 4 along the transmission shaft 33, the right end of the wedge plate 321 is connected with the transmission shaft 33 to rotate and move left and right synchronously.

Specifically, the right end of the wedge plate 321 is provided with a mounting plate, the mounting plate is provided with a rotating hole 322 coaxial with the transmission shaft 33, and the second end of the transmission shaft 33 is provided with a journal 331 with a diameter smaller than that of the transmission shaft 33, the left end of the journal 331 is provided with a shaft shoulder with a diameter larger than that of the journal 331, the journal 331 is rotatably mounted on the rotating hole 322, and moves left and right synchronously with the wedge plate 321 under the restriction of the shaft shoulder and the second end of the transmission shaft 33. The wedge plate 321 passes through the sliding rod frame 312, the side of the wedge plate 321 away from the hinged side of the window 2 is an inclined surface which is low on the left and high on the right.

When the sliding rod frame 312 moves away from the building body 1 along with the center of the sensor plate 311, the wedge 21

BL-5479 LU102930 plate 321 is pushed to the right by the inclined surface on one side of the wedge plate 321, thereby driving the transmission shaft 33 to slide to the right to the preset position.

[0025] In the embodiment, a return spring 332 is provided between the wedge plate 321 and the window frame 4 and is sleeved on the transmission shaft 33, the return spring 332 is squeezed when the wedge plate 321 pushes the transmission shaft 33 to slide close to the hinged side of the window 2, and the return spring 332 promotes the wedge plate 321 to drive the transmission shaft 33 to move to the initial position after the sensor plate 311 restoring deformation.

[0026] In the embodiment, the transmission shaft 33 is provided with a synchronization groove 333 extending axially along the transmission shaft 33, an inner ring of the first gear 34 is provided with clamping teeth 341 which is convex, the inner ring of the first gear 34 is sleeved on the transmission shaft 33, and the clamping teeth 341 are slidably installed in the synchronization groove 333, so that the first gear 34 rotates synchronously with the transmission shaft 33 and can slide relative to the transmission shaft 33 along the axial direction of the transmission shaft 33.

[0027] In the embodiment, an inner ring of the first friction ring 336 1s provided with a first ratchet 335, an outer 22

BL-5479 LU102930 circumference of the first end of the transmission shaft 33 is provided with a second ratchet 334 which is a retractable structure, the first friction ring 336 is sleeved on the first end of the transmission shaft 33, and the first ratchet 335 meshes with the second ratchet 334; when the first friction ring 336 rotates in the first direction, the first friction ring 336 drives the transmission shaft 33 to rotate in the first direction through the meshing of the first ratchet 335 and the second ratchet 334; When the first friction ring 336 rotates in the opposite direction to the first direction, the first ratchet 335 of the inner ring of the first friction ring 336 continuously squeeze the second ratchet 334, preventing the transmission shaft 33 from rotating synchronously with the first friction ring 336.

[0028] In another embodiment of the disclosure, the first friction ring 336 is rotationally mounted on the first end of the transmission shaft 33, and a one-way bearing is provided between the first friction ring 336 and the first end of the transmission shaft 33, the one-way bearing makes the transmission shaft 33 rotate synchronously with the first friction ring 336 when the first friction ring 336 rotates in the first direction, and the one-way bearing makes the first friction ring 336 rotates idly when the first friction ring 336 rotates in the opposite direction to the first 23

BL-5479 LU102930 direction.

[0029] In the embodiment, specifically, a sixth limiting groove 43 is provided at the side of the window frame 4 close to the window 2, the sealing strip plate 41 can be slidably installed on the sixth limiting groove 43 along a fourth direction which is a left-right direction; a tension spring 42 1s provided between the sealing strip plate 41 and the window frame 4, the sealing strip plate 41 extends the tension spring 42 to store force while pressing the opening and closing side of the window 2 tightly through a push of the upper top block 362. When there is a strong wind outside the building body 1, the windows 2 will rotate to the outside of the building body 1 or tend to rotate to the outside of the building body 1 under the action of the air pressure in the building body 1, preventing the windows 2 from rotating to the inside of the building body 1, thereby preventing the second friction ring 352 from driving the second gear 35 to rotate in the opposite direction to the first direction, thereby preventing the translation block 37 from driving the upper top block 362 to move away from the sealing strip plate 41 along the inclined surface of the helical teeth, preventing the sealing strip plate 41 from resetting under the action of the tension spring 42. After the strong wind stops outside the building body 1, the window 2 can be rotated 24

BL-5479 LU102930 toward the inside of the building body 1, allowing the tension spring to drive the sealing strip plate to reset.

[0030] In the embodiment, the prefabricated building structure also includes a top pressing plate 22 and a handle 21, the top pressing plate 22 can be slidably installed on the opening and closing side of the window 2 along the fourth direction, and the top pressing plate 22 has a top pressing position and a releasing position, in which the top pressing position is in a side of the releasing position away from the hinged side of the window 2. The handle 21 is rotationally installed on the window 2, the handle 21 has a locked position and an unlocked position when rotated, and the top pressing plate 22 is in the top pressing position when the handle 21 is rotated to the locked position, and the top pressing plate 22 is allowed to move toward the hinged side of the window 2 to the releasing position when the handle 21 is rotated to the unlocked position. Specifically, the window 2 is provided with a hinge hole 26 and an accommodating groove 25 communicating with the hinge hole 26, and one end of the handle 21 is provided with a hinge column 24 and a top pressing block 23, the hinge column 24 is rotationally installed in the hinge hole 26, the top pressing block 23 is in the accommodating groove 25, the top pressing block 23 is a rectangular parallelepiped and has a short side and a long

BL-5479 LU102930 side, and when the handle 21 is rotated to the locking position, the long side of the top pressing block 23 extends along the fourth direction, and the long side of the top pressing block 23 pushes the top pressing plate 22 to the top pressing position, and the sealing strip plate 41 pushes the top pressing plate 22 tightly through the push of the upper top block 362; and when the handle 21 is rotated to the unlocking position, the short side of the top pressing block 23 extends in the fourth direction, allowing the top pressing plate 22 to be moved toward the hinged side of the window 2 to the releasing position through the push of the sealing strip plate 41, the hinged side close to the window 2 1s moved to the release position, thereby reducing the pushing force between the sealing strip plate 41 and the top pressing plate 22, allowing the window 2 to be further rotated and opened to the outside of the building body 1.

[0031] In the embodiment, there are two adjusting devices, which are respectively arranged on both ends of the sealing strip plate 41.

[0032] In the prefabricated building structure of the disclosure, the handle 21 on the window 2 is always kept in the locked position, the window 2 does not need to be additionally locked when opening and closing, and when there is no wind outside the building body 1, the air pressure 26

BL-5479 LU102930 inside and outside the building body 1 is balanced, the sensor plate 311 remains in the initial state, the transmission shaft 33 is in the initial position, when the window 2 is rotated to open and close, the first friction ring 336 and the second friction ring 352 are driven to rotate with the same rotation speed, and the sealing strip plate 41 will not produce a large resistance to the rotation of the window 2, so that the window 2 rotates more smoothly.

When the window 2 is in the closed state and the air pressure is lowered due to the strong wind outside the building body 1, the middle part of the sensor plate 311 protrudes to the outside of the building body 1 under the action of the air pressure in the building body 1, and the window 2 is rotated to the outside of the building body 1 or tends to rotate toward the outside of the building body 1 under the action of the air pressure inside the building body 1. The sliding rod frame 312 moves away from the building body 1 along with the center of the sensor plate 311, and pushes the wedge plate 321 to the right by pushing the inclined surface on one side of the wedge plate 321, thereby driving the transmission shaft 33 to slide to the right to the preset position, the window 2 rotates slightly to the outside of the building body 1 under the action of the air pressure in the building body 1 and drives the first friction ring 336 and the second friction ring 352 to rotate in the first 27

BL-5479 LU102930 direction through frictional contact.

When the transmission shaft 33 moves from the initial position to the preset position, the first friction ring 336 is driven to move toward the hinged side of the window 2, so that the rotation speed of the first friction ring 336 is smaller than that of the second friction ring 352, and thus, the rotational speed of the first gear 34 is smaller than that of the second gear 35; the lower top block 361 and the translation block 37 move in the second direction under the transmission of the first gear 34 and the second gear 35 respectively, since the rotational speed of the second gear 35 is greater than that of the first gear 34, the translation block 37 drives the upper top block 362 to move backward relative to the lower top block 361 through the synchronizing block 363, and the upper top block 362 moves toward the sealing strip plate 41 along the inclined surface of the helical teeth between the upper top block 361 and the lower top block 361, the inclined surface on the upper top block 362 pushes the sealing strip plate 41 to the right to push the long side of the top pressing block 23 of the handle 21 tightly, thereby preventing the window 2 from further rotating to the outside of the building body 1, and since the window 2 has a tendency to rotate to the outside of the building body 1 due to the air pressure in the building body 1, the sealing strip plate 41 is prevented from resetting under the action of the 28

BL-5479 LU102930 tension spring 42. After the strong wind stops outside the building body 1, the rotation of the window 2 to the inside of the building body 1 is not hindered, and when the tension spring 42 drives the sealing strip plate 41 to reset, the sealing strip plate 41 presses the upper top block 362 to reset, and the upper top block 362 moves away from the sealing strip plate 41 along inclined surfaces of the helical teeth and drives the second gear 35 to rotate in the opposite direction to the first direction, and then the window 2 is driven to rotate toward the inside of the building body 1 through the second friction ring 352.

[0033] When there is a strong wind outside the building body 1 and one wants to forcefully open the window 2, it is only necessary to rotate the handle 21 to the unlocked position, so that the short side of the top pressing block 23 extends in the fourth direction, then the top pressing plate 22 moves toward the hinged side of the window 2 to the releasing position, thereby reducing the pushing force between the sealing strip plate 41 and the top pressing plate 22, allowing the window 2 to be further rotated and opened to the outside of the building body 1.

[0034] The above descriptions are only preferred embodiments of the disclosure, and are not intended to limit the disclosure. Any modification, equivalent replacement, 29

BL-5479 LU102930 improvement, etc. made within the spirit and principle of the disclosure shall be included in the protection scope of the disclosure.

Claims

BL-5479 LU102930 CLAIMS

1. A prefabricated building structure, including a building body, a window frame, a window, an adjusting device and a sealing strip plate, in which the window frame is fixedly installed on the building body, the window has a hinged side and an opening and closing side, the hinged side of the window is hinged to the window frame around a vertical axis so as to make the opening and closing side of the window open and close around the vertical axis, the window is in a closed state when rotated to be parallel to a wall of the building body, the window frame prevents a further rotation of the window toward an inside of the building body when the window is rotated to be in the closed state, and the window is closed in a initial state; the sealing strip plate is installed on the window frame, and is on a side of the window frame close to the opening and closing side of the window; the adjusting device includes a sensor plate, a transmission assembly, and a differential assembly, the window frame is provided with a through hole connecting the inside and an outside of the building body, and the sensor plate blocks the through hole, when there is a strong wind outside the building body to decrease an air pressure, a middle part of the sensor plate protrudes to the outside of the building body under an action of the air pressure inside the building body, and the window rotates to the outside of the building 31

BL-5479 LU102930 body or has a tendency to rotate to the outside of the building body under the action of the air pressure inside the building body; the transmission assembly includes a transmission shaft, a first friction ring and a second friction ring, the transmission shaft is horizontally slidably installed on the window frame, two ends of the transmission shaft are a first end and a second end respectively, the first end of the transmission shaft is close to the hinged side of the window with the window frame, the first friction ring is installed on the first end of the transmission shaft, and the first friction ring slides synchronously and horizontally with the transmission shaft; the first friction ring is in frictional contact with a horizontal side of the window, the second friction ring is rotationally installed in the window frame, and the second friction ring is in frictional contact with another position on the horizontal side of the window; when the sensor plate is in the initial state, the transmission shaft is at an initial position, when the middle part of the sensor plate protrudes outward from the building body, the transmission shaft slides toward the hinged side close to the window to a preset position, the first friction ring and the second friction ring have a same rotational direction and a same rotational speed when the transmission shaft is at the initial position and have a same rotational direction and 32

BL-5479 LU102930 different rotation speeds when the transmission shaft is in the preset position; and when the first friction ring and the second friction ring have different rotation speeds, the differential assembly promotes the sealing strip plate to move or deform to the opening and closing side of the window so as to press the window tightly.

2. The prefabricated building structure of claim 1, wherein the first friction ring rotates in a first direction and drives the transmission shaft to rotate in the first direction when the window is rotationally opened to the outside of the building body, and the first friction ring rotates in a direction opposite to the first direction and idles on the transmission shaft when the window is rotationally closed to the inside of the building body; the differential assembly includes a first gear, a second gear, a lower top block, an upper top block and a translation block, the first gear is slidably installed on the transmission shaft and synchronously rotates with the transmission shaft, the second gear is fixedly connected with the second friction ring, and the first gear and the second gear have a same size and the same modulus; when the transmission shaft is at the preset position, a rotation speed of the first friction ring is smaller than that of the second friction ring, so that a rotational speed of the first gear is less than that of the 33

BL-5479 LU102930 second gear; the lower top block, the upper top block and the translation block are all slidably installed on the window frame along a second direction, and the window frame prevents the lower top block, the upper top block and the translation block axially sliding along an axial direction of the transmission shaft; the translation block meshes with the second gear, the translation block and the upper top block are connected by a synchronizing block, one end of the synchronizing block is fixedly connected with the upper top block, and the other end of the synchronizing block is slidably installed on the translation block along a third direction; a side surface of the upper top block close to the sealing strip plate is an inclined surface, and when the upper top block moves along a direction of the sealing strip plate, the sealing strip plate is pushed up by the inclined surface of the upper top block, so that the sealing strip plate moves or deforms to the opening and closing side of the window and then presses the window tightly; and a side of the lower top block meshes with the first gear, and another side of the lower top block meshes with the upper top block through helical teeth through which the upper top block is driven by the translation block to move toward the window along inclined surfaces of the helical teeth when the rotational speed of the first gear is smaller than that of the second gear. 34

BL-5479 LU102930

3. The prefabricated building structure of claim 1, wherein the transmission assembly also includes a sliding rod frame and a wedge plate, the sliding rod frame can be slidably installed on the window frame along the second direction, and one side of the sliding rod frame is fixedly installed at a center of a side of the sensor plate facing to the inside of the building body; the wedge plate is axially and slidably installed on the window frame along the transmission shaft, an end of the wedge plate close to the hinged side of the window is rotationally connected to the transmission shaft, the wedge plate passes through the sliding rod frame, a side of the wedge plate away from the hinged side of the window is an inclined surface, when the sliding rod frame along with a center of the sensor plate moves away from the building body, the wedge plate is pushed up by the inclined surface of the wedge plate to move toward the hinged side of the window, thereby driving the transmission shaft to slide toward the hinged side of the window to the preset position.

4. The prefabricated building structure of claim 3, wherein a return spring is provided between the wedge plate and the window frame, the return spring is squeezed when the wedge plate pushes the transmission shaft to slide close to the hinged side of the window, and the return spring promotes the wedge plate to drive the transmission shaft to move to

BL-5479 LU102930 the initial position after the sensor plate restoring deformation.

5. The prefabricated building structure of claim 2, wherein the transmission shaft is provided with a synchronization groove extending axially along the transmission shaft, an inner ring of the first gear is provided with clamping teeth which is convex, the inner ring of the first gear is sleeved on the transmission shaft, and the clamping teeth are slidably installed in the synchronization groove, so that the first gear rotates synchronously with the transmission shaft and slide relative to the transmission shaft along the axial direction of the transmission shaft.

6. The prefabricated building structure of claim 2, wherein an inner ring of the first friction ring is provided with a first ratchet, an outer circumference of the first end of the transmission shaft is provided with a second ratchet which is a retractable structure, the first friction ring is sleeved on the first end of the transmission shaft, and the first ratchet meshes with the second ratchet; when the first friction ring rotates in the first direction, the first friction ring drives the transmission shaft to rotate in the first direction through the meshing of the first ratchet and the second ratchet; and when the first friction ring rotates in the opposite direction to the first direction, the first 36

BL-5479 LU102930 ratchet of the inner ring of the first friction ring continuously squeeze the second ratchet, preventing the transmission shaft from rotating synchronously with the first friction ring.

7. The prefabricated building structure of claim 2, wherein the first friction ring is rotatably mounted on the first end of the transmission shaft, and a one-way bearing is provided between the first friction ring and the first end of the transmission shaft, the one-way bearing makes the transmission shaft rotate synchronously with the first friction ring when the first friction ring rotates in the first direction, and the one-way bearing makes the first friction ring rotates idly when the first friction ring rotates in the opposite direction to the first direction.

8. The prefabricated building structure of claim 2, wherein the sealing strip plate can be slidably installed on the window frame along a fourth direction, a tension spring is provided between the sealing strip plate and the window frame, the sealing strip plate extends the tension spring to store force while pressing the opening and closing side of the window tightly through a push of the upper top block; and after the strong wind stops outside the building body, the window can be rotated toward the inside of the building body, the tension spring drives the sealing strip plate to reset, 37

BL-5479 LU102930 and at the same time, the sealing strip plate presses the upper top block to reset.

9. The prefabricated building structure of claim 8, further including a top pressing plate and a handle, wherein the top pressing plate can be slidably installed on the opening and closing side of the window along the fourth direction, the top pressing plate has a top pressing position and a releasing position, and the top pressing position is in a side of the releasing position away from the hinged side of the window; the handle is rotationally installed on the window, the handle has a locked position and an unlocked position when rotated, and the top pressing plate is in the top pressing position when the handle is rotated to the locked position, and the top pressing plate is allowed to move toward the hinged side of the window to the releasing position when the handle is rotated to the unlocked position; when the handle is in the locked position, the sealing strip plate pushes the top pressing plate tightly through the push of the upper top block, and when the handle is turned to the unlocking position, the top pressing plate is moved to the hinged side of the window through the push of the sealing strip plate, which reduces the pushing force between the sealing strip plate and the top pressing plate, thereby allowing the window to be further rotated and opened to the 38

BL-5479 LU102930 outside of the building body.

10. The prefabricated building structure of claim 9, wherein there are two adjusting devices, which are respectively arranged on both ends of the sealing strip plate. 39