Hidden ventilation structure for building wall

Abstract

The utility model discloses a hidden ventilation structure for building wall, including the mounting plate, the mounting plate is provided with the ventilation mechanism, the ventilation mechanism includes the hinge seat, cover plate, bellows, vent hole and fan, the hinge seat is installed on the top of the mounting plate, the cover plate is rotatingly installed on the hinge seat, and the bellows is installed on the cover plate. The two ends of the corrugated pipe are connected with the mounting plate and the cover plate respectively, the ventilation hole is formed in the outer wall of the corrugated pipe, the fan is mounted on the mounting plate through a clamping mechanism, the clamping mechanism comprises a clamping rod, a clamping groove, a limiting block, a clamping sleeve, a top groove, a clamping block, a control sleeve and a lock sleeve, the clamping rod is mounted on the mounting plate, and the limiting block is mounted on the clamping rod. And the clamping groove is formed in the outer wall of the clamping rod, and the limiting block is arranged at the top end of the clamping rod, so that the technical problems that in the background technology, when a ventilation device is not used, effective hiding is difficult to achieve, and rapid clamping installation and disassembly of a fan are inconvenient are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building wall technology field more specifically, it relates to a building wall is with hidden ventilation structure. BACKGROUND

[0002] In the existing technology, a significant problem in the design of building wall ventilation structure is that the ventilation device is difficult to achieve effective concealment when not in use. This design flaw often exposes the ventilation structure to the external environment, not only affecting the overall appearance of the building, but also causing a series of practical problems. The exposed ventilation device is prone to accumulate dust and dirt, and may even become a habitat for insects and small animals, which not only reduces the ventilation efficiency, but also may cause health hazards. In addition, the ventilation device exposed to the external environment for a long time is more susceptible to wind, rain, sunlight and other natural factors, which accelerates its aging and damage, increases the frequency and cost of maintenance and replacement. This design not only affects the appearance and function of the building, but also may reduce the overall energy efficiency of the building, as the ventilation structure that fails to be effectively concealed may become a weak point of heat exchange, affecting the insulation and thermal performance of the building.

[0003] The ventilation structure design in the prior art is not convenient for quick clamping installation and disassembly of the fan. This design deficiency greatly increases the difficulty and time cost of maintenance and cleaning. Usually, the installation and disassembly of the fan require professional tools and technical personnel, which not only increases the maintenance cost, but also prolongs the maintenance time, which may affect the normal use of the building. The complex disassembly process also increases the risk of operation errors, which may cause equipment damage or improper installation, affecting the ventilation effect and safety. In addition, due to the lack of quick clamping mechanism, this design is particularly inconvenient when frequent cleaning or replacement of the fan is required. This not only reduces the efficiency of daily maintenance, but also may cause the owner or user to neglect the necessary cleaning and maintenance work due to the difficulty of operation, thereby affecting the long-term performance and life of the ventilation system. This design limitation not only increases the operating cost of the building, but also may reduce the efficiency and reliability of the entire ventilation system, affecting the indoor air quality and user experience. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the problems existing in the prior art, the utility model provides a hidden ventilation structure for building wall to solve the technical problems of the ventilation device being difficult to achieve effective concealment when not in use and being inconvenient for quick clamping installation and disassembly of the fan mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical scheme: A hidden ventilation structure for building wall body, including installation board, ventilation mechanism is provided on the installation board, ventilation mechanism includes hinged seat, apron, bellows, ventilation hole and fan, the hinged seat is installed at the top end of installation board, apron is rotatably installed on the hinged seat, the bellows both ends are connected installation board and apron respectively, ventilation hole is set up in the outer wall of bellows, the fan is installed on the installation board through the setting of clamping mechanism, the clamping mechanism includes clamping rod, clamping groove, limit block, clamping sleeve, top groove, clamping block, control sleeve and lock sleeve, the clamping rod is installed on the installation board, the clamping groove is set up in the outer wall of clamping rod, the limit block is set up at the top end of clamping rod, the clamping sleeve is set up in the outer wall of clamping sleeve, the top groove is set up in the inner top end of clamping sleeve, the clamping block is set up and is set up on the clamping sleeve, the control sleeve is rotatably installed on the clamping sleeve, the lock sleeve is installed on the bottom surface of control sleeve.

[0008] The utility model further sets up, be provided with transmission assembly on ventilation mechanism, transmission assembly includes arc gear rack, motor and gear, arc gear rack is installed at installation board bottom end, the motor is dark and turns over and reforms apron bottom end, gear is installed at motor output and with arc gear rack interlock, this transmission design has realized the stable movement of hidden ventilation mechanism, has reduced noise and vibration.

[0009] The utility model further sets up, multiple clamping blocks are all slidably installed on the clamping sleeve, multiple clamping blocks are all provided with tension spring outside end, and the both ends of multiple tension springs are connected with the outside end of clamping block and the outer wall of clamping sleeve respectively, which increases the stability and reliability of the overall structure.

[0010] The utility model further sets up, the lock sleeve inner wall is seted up with locking groove, and the locking groove is provided with multiple groups of abutting multiple clamping blocks outside end, which improves the safety and firmness of the overall structure.

[0011] The utility model further sets up, the lock sleeve inner wall is seted up with unlocking groove, and the unlocking groove is provided with multiple groups, which improves the flexibility and operability of the system.

[0012] The utility model further sets up, and the limit slot is seted up in the inside of clamping sleeve, which ensures the accurate positioning of the components during movement.

[0013] The utility model further sets up, the outer wall of joint sleeve sets up limit component, limit component includes limit cover, top contact piece, push spring, resist cover and resist groove, limit cover installs at joint sleeve bottom end, top contact piece is provided with multiple groups and installs on limit cover, push spring is provided with multiple groups and both ends connect multiple top contact piece and limit cover respectively, resist cover installs at lock cover bottom surface, resist groove is provided with multiple groups and distributes at resist cover bottom surface, the design of limit component provides additional positioning and limiting function, increases the stability of overall structure, realizes accurate positioning and locking function.

[0014] The utility model further sets up, the outer wall of joint sleeve sets up limit component, limit component includes limit cover, top contact piece, push spring, resist cover and resist groove, limit cover installs at joint sleeve bottom end, top contact piece is provided with multiple groups and installs on limit cover, push spring is provided with multiple groups and both ends connect multiple top contact piece and limit cover respectively, resist cover installs at lock cover bottom surface, resist groove is provided with multiple groups and distributes at resist cover bottom surface, the design of limit component provides additional positioning and limiting function, increases the stability of overall structure, realizes accurate positioning and locking function.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a hidden ventilation structure for building wall, has the following beneficial effects:

[0017] 1, the ventilation mechanism design cleverly solved the problem that the ventilation structure is not convenient to hide in the prior art, through the clever cooperation of the hinged seat, the cover plate and the bellows, the flexible opening and closing of the ventilation structure is realized, the motor drive gear is engaged with the arc gear rack, the cover plate can accurately control the opening and closing angle, so that the bellows can be stretched and contracted, this design not only guarantees the ventilation effect, but also can be completely hidden when not in use, effectively protects the ventilation structure from the influence of the external environment, prolongs the service life of the equipment, at the same time, maintains the beautiful and clean appearance of the building, in addition, this kind of hidden design also improves the energy efficiency of the building, reduces the heat exchange, and improves the heat preservation and insulation performance of the building.

[0018] 2, the innovative design of the clamping mechanism solves the problem that the fan is not convenient to quickly install and disassemble in the prior art, through the clever cooperation of the clamping rod, the clamping sleeve, the clamping block and other components, the quick clamping and disassembly of the fan is realized, the design of the control sleeve and the lock sleeve makes the operation more simple and reliable, the design of multiple clamping blocks cooperating with the tension spring ensures the stability and reliability of the clamping, this design greatly simplifies the installation and disassembly process of the fan, which can be completed without professional tools and technical personnel, significantly reduces the maintenance cost and time, at the same time, the quick clamping mechanism is also convenient for daily cleaning and maintenance, improves the efficiency and reliability of the whole ventilation system, and is beneficial to maintaining good indoor air quality.

[0019] 3、The design of the limiting assembly further enhances the stability and reliability of the whole ventilation structure. Through the cooperative work of the limiting sleeve, the top block, the push spring and the resisting sleeve, the accurate control and limiting of the position of the lock sleeve are realized. A plurality of top blocks are matched with the resisting groove under the action of the push spring, which provides appropriate resistance for the rotation of the lock sleeve, ensures the smooth and controllable process of locking and unlocking, and increases the flexibility of the movement of the top block. The design of the movable groove makes the whole limiting mechanism more reliable. The design not only improves the operation precision and stability of the clamping mechanism, but also increases the safety of the whole ventilation structure. Through the accurate control of the position of the lock sleeve, accidental unlocking is effectively prevented, the stability of the fan in the use process is ensured, and the convenience and safety of use are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of a hidden ventilation structure for a building wall in the utility model.

[0021] Figure 2 It is a structure schematic view of a fan and a clamping mechanism in the utility model.

[0022] Figure 3 It is a structure schematic view of a clamping mechanism and a fan in a split state in the utility model.

[0023] Figure 4 It is a sectional view of a clamping mechanism in the utility model.

[0024] Figure 5 It is a split structure schematic view of a limiting assembly in the utility model.

[0025] In the drawing: 1, mounting plate; 2, hinged seat; 3, cover plate; 4, corrugated pipe; 5, ventilation hole; 6, fan; 7, clamping rod; 8, clamping groove; 9, limiting block; 10, clamping sleeve; 11, top groove; 12, clamping block; 13, control sleeve; 14, lock sleeve; 15, arc-shaped rack; 16, motor; 17, gear; 18, locking groove; 19, unlocking groove; 20, limiting groove; 21, limiting sleeve; 22, top block; 23, push spring; 24, resisting sleeve; 25, resisting groove; 26, movable groove; 27, pull spring. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0028] In the utility model, in the case where no opposite statement is made, the orientation such as "upper, lower" is usually for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is usually for the left and right shown in the drawing; "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0029] Please refer to Figures 1-5 A hidden ventilation structure for building wall body, including installation board 1, installation board 1 is provided with ventilation mechanism, ventilation mechanism includes hinged seat 2, cover plate 3, bellows 4, ventilation hole 5 and fan 6, hinged seat 2 is installed at the top of installation board 1, cover plate 3 is rotatably installed on hinged seat 2, bellows 4 two ends are connected installation board 1 and cover plate 3 respectively, ventilation hole 5 is arranged on the outer wall of bellows 4, fan 6 is installed on installation board 1 by being provided with clamping mechanism, clamping mechanism includes clamping rod 7, clamping groove 8, limiting block 9, clamping sleeve 10, top groove 11, clamping block 12, control sleeve 13 and lock sleeve 14, clamping rod 7 is installed on installation board 1, clamping groove 8 is arranged on the outer wall of clamping rod 7, limiting block 9 is arranged at the top end of clamping rod 7, clamping sleeve 10 is arranged on the outer wall of clamping sleeve 10, top groove 11 is arranged at the inner top end of clamping sleeve 10, clamping block 12 is provided with multiple groups arranged on clamping sleeve 10, control sleeve 13 is rotatably installed on clamping sleeve 10, lock sleeve 14 is installed on the bottom surface of control sleeve 13.

[0030] Ventilation mechanism is provided with transmission assembly, transmission assembly includes arc gear rack 15, motor 16 and gear 17, arc gear rack 15 is installed at the bottom end of installation board 1, motor 16 is rotatably installed at the bottom end of cover plate 3, gear 17 is installed at the output end of motor 16 and is mutually engaged with arc gear rack 15, the design of arc gear rack 15 adapts the circular arc motion track, improves the accuracy of transmission, the combination of motor 16 and gear 17 realizes accurate motion control, increases the adjustability of system, and this transmission design realizes the smooth movement of hidden ventilation mechanism, reduces noise and vibration.

[0031] Multiple clamping blocks 12 are slidably installed on clamping sleeve 10, multiple clamping blocks 12 are provided with tension spring 27 at the outer end, and the outer end of multiple tension springs 27 is connected with the outer wall of clamping sleeve 10 respectively, the sliding installation design of clamping block 12 increases the flexibility and adaptability of connection, and the tension spring 27 provides automatic reset function, to ensure that the clamping block 12 always remains in the correct position, and the multiple design increases the stability and reliability of the overall structure.

[0032] The inner wall of the lock sleeve 14 is provided with a locking groove 18, which is provided with multiple groups of abutting portions for the outer ends of the multiple groups of clamping blocks 12. The design of the locking groove 18 achieves precise positioning and locking of the clamping blocks 12. The multiple groups design increases the reliability and stability of the locking, which improves the safety and firmness of the overall structure.

[0033] The inner wall of the lock sleeve 14 is provided with an unlocking groove 19, which is provided with multiple groups. The design of the unlocking groove 19 provides the function of quick unlocking, increases the convenience of operation, and ensures the reliability and stability of the unlocking process. This design improves the flexibility and operability of the system.

[0034] The inner side of the clamping sleeve 10 is provided with a limiting groove 20. The design of the limiting groove 20 limits the movement range of the components, increases the safety of the operation, and ensures the precise positioning of the components during the movement process. The limiting groove 20 helps to reduce the wear between the components and prolongs the service life.

[0035] In this embodiment, the starting motor 16 drives the gear 17 to rotate, and through the meshing of the gear 17 and the arc-shaped rack 15, the gear 17 moves along the outer wall of the arc-shaped rack 15, thereby driving the cover plate 3 to rotate through the hinge seat 2, thereby extruding and shrinking the corrugated pipe 4. Thus, the ventilation structure can be hidden. Conversely, the starting motor 16 reverses to drive the cover plate 3 to open and stretch the corrugated pipe 4. The fan 6 is started to exhaust air through multiple ventilation holes 5, thereby ventilating. When installing the fan 6, the fan 6 is inserted into the clamping rod 7 at the four corners, and then the limiting groove 20 provided on the clamping sleeve 10 is aligned with the limiting block 9 and disassembled. At the same time, the lock sleeve 14 is rotated to move the multiple unlocking sleeves 14 to the outside of the multiple clamping blocks 12, so that the multiple clamping blocks 12 are stretched outward by the tension spring 27. Then, the clamping rod 7 is inserted into the clamping sleeve 10 to move the limiting block 9 into the top groove 11. Then, the clamping sleeve 10 is rotated to make the bottom surface of the top groove 11 abut against the bottom surface of the limiting block 9. Then, the control sleeve 13 is rotated to drive the lock sleeve 14 to rotate. The rotation of the lock sleeve 14 drives the multiple locking grooves to abut against the outer ends of the multiple clamping blocks 12 and applies downward pressure, so that the bottom ends of the multiple clamping blocks 12 are clamped in the clamping groove 8. Thus, the quick clamping and installation of the fan 6 can be completed. When the fan 6 needs to be disassembled, the control sleeve 13 is rotated to drive the lock sleeve 14 to rotate. The rotation of the lock sleeve 14 releases the abutment of the multiple locking grooves 18 against the outer ends of the multiple clamping blocks 12, so that the multiple unlocking grooves 19 are rotated to the outside of the multiple clamping blocks 12. At this time, the multiple clamping blocks 12 are stretched outward by the multiple tension springs 27, so that the bottom ends of the multiple clamping blocks 12 are released from the clamping of the clamping groove 8. Then, the clamping sleeve 10 is disengaged from the clamping pipe, and the fan 6 is disassembled.

[0036] Please refer to Figure 5 As an embodiment of the limiting assembly: the outer wall of the clamping sleeve 10 is provided with a limiting assembly, which includes a limiting sleeve 21, a top block 22, a push spring 23, a resisting sleeve 24 and a resisting groove 25. The limiting sleeve 21 is installed at the bottom end of the clamping sleeve 10. The top block 22 is provided with multiple groups of installation on the limiting sleeve 21. The push spring 23 is provided with multiple groups and the two ends are connected with multiple groups of top blocks 22 and limiting sleeves 21 respectively. The resisting sleeve 24 is installed on the bottom surface of the lock sleeve 14. The resisting groove 25 is provided with multiple groups distributed on the bottom surface of the resisting sleeve 24. The design of the limiting assembly provides additional positioning and limiting functions, increases the stability of the overall structure, and the design of the push spring 23 provides elastic support and increases the buffering capacity of the system. The design of the resisting sleeve 24 and the resisting groove 25 realizes precise positioning and locking function.

[0037] The limiting sleeve 21 is provided with a movable slot 26, which is provided with multiple groups and is in sliding connection with the bottom end of the multiple groups of top blocks 22. The design of the movable slot 26 allows the top block 22 to move within a limited range, increases the flexibility of the system, and reduces friction through sliding connection design, improves the smoothness of movement. This design helps to accurately control the position of the top block 22, improves the accuracy and reliability of the overall system.

[0038] More specifically, the multiple groups of top blocks 22 are slidingly installed in the movable slot 26. The multiple groups of push springs 23 push the top block 22 to make its top end abut in the multiple groups of resisting grooves 25 provided on the bottom surface of the resisting sleeve 24, and a certain resistance is applied to the lock sleeve 14. When the transmission sleeve rotates, the resisting sleeve 24 rotates, and the side of the resisting groove 25 pushes the multiple groups of top blocks 22 out of the resisting groove 25. After the lock sleeve 14 completes the rotation, the multiple groups of top blocks 22 continue to be clamped in the resisting groove 25 to limit the lock sleeve 14.

[0039] In summary, the overall device in use or operation: start motor 16 drive gear 17 rotation, through the gear 17 and arc-shaped rack 15 meshing, so that the gear 17 along the arc-shaped rack 15 wall meshing movement, thus driving the cover plate 3 through the hinge seat 2 rotation, thus the corrugated pipe 4 extrusion shrinkage, thus can hide the ventilation structure, vice versa start motor 16 reverse drive cover plate 3 open to the corrugated pipe 4 stretch, start fan 6 will air through a plurality of ventilation holes 5 exhaust, that can be ventilated, in the fan 6 installation, the fan 6 four corners are respectively inserted in the clamping rod 7, then the clamping sleeve 10 set limiting groove 20 and limiting block 9 alignment and disassembly, while rotating the lock sleeve 14 so that a plurality of unlocking sleeve 14 to a plurality of clamping blocks 12 outside, so that a plurality of clamping blocks 12 by the tension spring 27 stretch outward, then the clamping rod 7 inserted in the clamping sleeve 10 so that the limiting block 9 moves to the top groove 11, then rotate the clamping sleeve 10 so that the top groove 11 bottom surface to the limiting block 9 bottom surface abutment, then rotate the control sleeve 13 drive lock sleeve 14 rotation, lock sleeve 14 rotation driven by a plurality of locking slots a plurality of clamping blocks 12 outer end abutment and exert a downward pressure, so that a plurality of clamping blocks 12 bottom end clamping in the clamping groove 8, thus can complete the quick clamping installation of fan 6, when the need to disassemble the fan 6, rotate the control sleeve 13 drive lock sleeve 14 rotation, lock sleeve 14 rotation so that a plurality of locking slots 18 remove the abutment of a plurality of clamping blocks 12 outer end, so that a plurality of unlocking slots 19 rotate to a plurality of clamping blocks 12 outside, at this time a plurality of clamping blocks 12 by a plurality of tension springs 27 stretch outward, so that a plurality of clamping blocks 12 bottom end remove the clamping groove 8 clamping, then rotate the clamping sleeve 10 so that the clamping rod 7 top set limiting block 9 moves to the limiting groove 20 position after the top groove 11 remove the abutment of the limiting block 9, then the clamping sleeve 10 can be disassembled from the clamping pipe, the fan 6 disassembly.

[0040] A plurality of top block 22 are slidingly installed in the movable groove 26, the top block 22 is driven by a plurality of push spring 23 so that its top end abutment in the plurality of abutment groove 25 set in the bottom surface of the abutment sleeve 24, a certain resistance is exerted on the lock sleeve 14, when the transmission sleeve rotates, the abutment sleeve 24 rotates, when the abutment sleeve 24 rotates, the abutment groove 25 side abutment a plurality of top block 22 out of the abutment groove 25, after the lock sleeve 14 completes the rotation, a plurality of top block 22 continue to clamp in the abutment groove 25 to limit the lock sleeve 14.

[0041] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hidden ventilation structure for a building wall, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a ventilation mechanism, the ventilation mechanism includes a hinged seat (2), a cover plate (3), a bellows (4), a ventilation hole (5) and a fan (6), the hinged seat (2) is installed at the top end of the mounting plate (1), the cover plate (3) is rotatably installed on the hinged seat (2), the bellows (4) is connected to the mounting plate (1) and the cover plate (3) at both ends respectively, the ventilation hole (5) is provided on the outer wall of the bellows (4), the fan (6) is installed on the mounting plate (1) by being provided with a clamping mechanism, the clamping mechanism includes a clamping rod (7), a clamping groove (8), a limiting block (9), a clamping sleeve (10), a top groove (11), a clamping block (12), a control sleeve (13) and a lock sleeve (14), the clamping rod (7) is installed on the mounting plate (1), the clamping groove (8) is provided on the outer wall of the clamping rod (7), the limiting block (9) is provided at the top end of the clamping rod (7), the clamping sleeve (10) is provided on the outer wall of the clamping sleeve (10), the top groove (11) is provided at the inner top end of the clamping sleeve (10), the clamping block (12) is provided with a plurality of groups on the clamping sleeve (10), the control sleeve (13) is rotatably installed on the clamping sleeve (10), and the lock sleeve (14) is installed on the bottom surface of the control sleeve (13).

2. The hidden ventilation structure for building wall according to claim 1, characterized in that: The ventilation mechanism is provided with a transmission assembly, the transmission assembly includes an arc-shaped rack (15), a motor (16) and a gear (17), the arc-shaped rack (15) is installed at the bottom end of the mounting plate (1), the motor (16) is installed at the bottom end of the cover plate (3), and the gear (17) is installed at the output end of the motor (16) and is in meshing connection with the arc-shaped rack (15).

3. A hidden ventilation structure for building wall according to claim 1, characterized in that: multiple groups The clamping block (12) is slidably installed on the clamping sleeve (10), a plurality of groups of the clamping block (12) are provided with a pull spring (27) at the outer end, and a plurality of groups of the pull spring (27) are connected to the outer end of the clamping block (12) and the outer wall of the clamping sleeve (10) at both ends respectively.

4. The hidden ventilation structure for a building wall according to claim 3, wherein: The inner wall of the lock sleeve (14) is provided with a locking groove (18), and the locking groove (18) is provided with a plurality of groups of clamping blocks (12) which can abut against the outer end of the clamping block (12).

5. The hidden ventilation structure for a building wall according to claim 4, wherein: The inner wall of the lock sleeve (14) is provided with an unlocking groove (19), and the unlocking groove (19) is provided with a plurality of groups.

6. The hidden ventilation structure for a building wall according to claim 5, wherein: The inner side of the clamping sleeve (10) is provided with a limiting groove (20).

7. The hidden ventilation structure for a building wall according to claim 6, wherein: The outer wall of the clamping sleeve (10) is provided with a limiting assembly, the limiting assembly includes a limiting sleeve (21), a top abutting block (22), a push spring (23), a abutting sleeve (24) and an abutting groove (25), the limiting sleeve (21) is installed at the bottom end of the clamping sleeve (10), a plurality of groups of the top abutting block (22) are installed on the limiting sleeve (21), a plurality of groups of the push spring (23) are connected to a plurality of groups of the top abutting block (22) and the limiting sleeve (21) at both ends respectively, the abutting sleeve (24) is installed on the bottom surface of the lock sleeve (14), and a plurality of groups of the abutting groove (25) are distributed on the bottom surface of the abutting sleeve (24).

8. The hidden ventilation structure for a building wall according to claim 7, wherein: The limiting sleeve (21) is provided with a movable groove (26), and the movable groove (26) is provided with a plurality of groups and is in sliding connection with the bottom end of a plurality of groups of the top abutting block (22).

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