Door and window air tightness detection device
By designing a moving mechanism and a high-efficiency exhaust mechanism to adapt to different sizes of doors and windows, the problems of inaccurate positioning and difficulty in cleaning up smoke in door and window airtightness detection devices have been solved, achieving higher detection accuracy and easier smoke cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGYING DAMING NEW BUILDING MATERIALS CO LTD
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-28
AI Technical Summary
Existing door and window airtightness testing devices are difficult to adapt to doors and windows of different sizes, resulting in inaccurate positioning and poor sealing effect, and smoke is difficult to effectively expel after testing.
A door and window airtightness testing device was designed, which includes a moving mechanism and an exhaust mechanism. The side baffle is driven by a motor to move to adapt to doors and windows of different sizes, and the four sides of the door and window are evenly pressed by a cylinder and a rectangular rod. At the same time, the exhaust mechanism is used to efficiently clean up the smoke after the test.
It enables accurate positioning and uniform clamping of doors and windows of different sizes, improves the accuracy of detection, and optimizes the convenience of smoke removal.
Smart Images
Figure CN224568425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door and window testing technology, and in particular to a door and window airtightness testing device. Background Technology
[0002] As a key component of building envelope, the airtightness of doors and windows directly affects the building's energy efficiency, indoor thermal comfort, and sound insulation. Therefore, during the production, construction, and acceptance stages of doors and windows, their airtightness must be rigorously tested using professional testing equipment to ensure that doors and windows meet relevant standards.
[0003] In the practical application of existing door and window airtightness testing devices, there are two significant shortcomings: First, the positioning and clamping structures of most devices are fixed, making it difficult to adapt to doors and windows of different sizes. When the size of the doors and windows changes, the center of the doors and windows may not be aligned with the clamping components, resulting in uneven force on the four sides of the doors and windows when pressed down, poor sealing effect, and thus affecting the accuracy of the test. Second, the airtightness is usually judged by the smoke method during the test, but the smoke remaining under the doors and windows after the test is difficult to concentrate and expel. Therefore, we propose a door and window airtightness testing device to solve this problem. Utility Model Content
[0004] The purpose of this application is to provide a door and window airtightness testing device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution: a door and window airtightness testing device, including a testing platform, wherein a sealing gasket is fixedly installed on the top of the testing platform; Two side baffles are provided above the testing platform, and the two side baffles are arranged vertically. A moving mechanism for driving the side baffles to move is installed on the top of the testing platform. An L-shaped plate is fixedly installed on the side of the testing platform, and a cylinder is fixedly installed on the top of the L-shaped plate. The movable end of the cylinder passes through the top of the L-shaped plate and is fixedly installed with an L-shaped column. Rectangular holes are opened at both ends of the L-shaped column, and the two rectangular holes are staggered. A rectangular rod is slidably installed in each of the two rectangular holes. The ends of the two rectangular rods away from the L-shaped column are slidably connected to two side baffles respectively. Protective pads are installed at the bottom of the two rectangular rods and the bottom of the L-shaped column. The sealing gasket and the top of the testing platform have two through holes and a smoke hole. A smoke generator is fixedly installed at the bottom of the testing platform. The exhaust end of the smoke generator is fixedly connected to the inner wall of the smoke hole. Two exhaust mechanisms are installed at the bottom of the testing platform, and the two exhaust mechanisms correspond to the positions of the two through holes respectively.
[0006] Preferably, the moving mechanism includes a motor fixedly installed on the top of the testing platform, a rotating shaft fixedly installed on the output shaft of the motor, an external thread on the rotating shaft, a sliding block threaded on the external thread, a connecting rod fixedly installed on the side of the sliding block, and the end of the connecting rod away from the sliding block fixedly installed on the side of a side baffle arranged parallel to the sliding block.
[0007] Preferably, a T-shaped slide rail is fixedly installed on the top of the testing platform, the sliding block is slidably installed on the top of the T-shaped slide rail, a rotating seat is installed on the top of the testing platform, and the end of the rotating shaft away from the motor is rotatably installed on the side of the rotating seat.
[0008] Preferably, the two connecting rods are staggered.
[0009] Preferably, the exhaust mechanism includes a sealed box fixedly installed at the bottom of the testing platform. An L-shaped tube and a straight tube are fixedly installed on both sides of the sealed box, respectively. The top end of the L-shaped tube is fixedly connected to the inner wall of the through hole. A fan is fixedly installed on the inner wall of the sealed box. A threaded hole is opened on one side of the inner wall of the L-shaped tube, and a sealing component is installed in the threaded hole.
[0010] Preferably, the sealing assembly includes a threaded rod threaded into a threaded hole, both ends of which extend outside the threaded hole. A guide plate is rotatably mounted on one end of the threaded rod, and a sealing block is fixedly mounted on the side of the guide plate. The sealing block abuts against the inner wall of the sealing box, and the sealing block corresponds to the position of the L-shaped tube.
[0011] Preferably, guide rods are fixedly installed on the inner walls of both sides of the sealed box, the guide plate is slidably sleeved on the two guide rods, and a knob is fixedly installed on the end of the threaded rod away from the guide plate.
[0012] Preferably, the top of the side baffle is provided with a T-shaped hole, and a T-shaped slider is slidably installed in the T-shaped hole. The side of the T-shaped slider is fixedly connected to one end of the rectangular rod.
[0013] In summary, the technical effects and advantages of this utility model are as follows: In this application, the door and window airtightness testing device drives the side baffle to move through a moving mechanism, which can adjust the positioning according to different sizes of doors and windows, so that the center position of the door and window can be aligned with the L-shaped column and the rectangular rod; in conjunction with the cylinder driving the L-shaped column and the rectangular rod to press down, it can evenly press the four sides of the door and window to ensure the test airtightness; at the same time, the exhaust mechanism at the bottom of the testing platform can efficiently discharge the residual smoke under the door and window after the test, which not only improves the adaptability and testing accuracy of different sizes of doors and windows, but also optimizes the convenience of smoke cleaning after the test. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 A first-person perspective stereoscopic view of a door and window airtightness testing device; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A second-view perspective stereoscopic view of a door and window airtightness testing device; Figure 4 This is a 3D view of the exhaust mechanism.
[0016] In the diagram: 1. Testing platform; 2. Motor; 3. Sealing gasket; 4. Rotating shaft; 5. Cylinder; 6. L-shaped plate; 7. Side baffle; 8. Through hole; 9. Smoke hole; 10. L-shaped column; 11. Protective pad; 12. Rectangular rod; 13. Connecting rod; 14. Sliding block; 15. T-shaped slide rail; 16. T-shaped slider; 17. L-shaped tube; 18. Smoke generator; 19. Sealing box; 20. Sealing block; 21. Guide rod; 22. Guide plate; 23. Fan; 24. Straight tube; 25. Knob; 26. Threaded rod. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1 - Figure 4 The embodiments provided by this utility model are as follows: The airtightness testing device for doors and windows includes a testing platform 1, and a sealing gasket 3 is fixedly installed on the top of the testing platform 1. Two side baffles 7 are provided above the testing table 1. The two side baffles 7 are vertically arranged. A moving mechanism for driving the side baffles 7 to move is installed on the top of the testing table 1. An L-shaped plate 6 is fixedly installed on the side of the testing table 1. A cylinder 5 is fixedly installed on the top of the L-shaped plate 6. The movable end of the cylinder 5 passes through the top of the L-shaped plate 6 and is fixedly installed with an L-shaped column 10. Rectangular holes are opened at both ends of the L-shaped column 10. The two rectangular holes are staggered. A rectangular rod 12 is slidably installed in each of the two rectangular holes. The ends of the two rectangular rods 12 away from the L-shaped column 10 are slidably connected to two side baffles 7 respectively. Protective pads 11 are installed at the bottom of the two rectangular rods 12 and the bottom of the L-shaped column 10. The top of the sealing gasket 3 and the test platform 1 has two through holes 8 and a smoke hole 9. A smoke generator 18 is fixedly installed at the bottom of the test platform 1. The smoke generator 18 is prior art. For reference, you can refer to the smoke generator in the building door and window airtightness testing device disclosed in the prior art document CN221803285U. The exhaust end of the smoke generator 18 is fixedly connected to the inner wall of the smoke hole 9. Two exhaust mechanisms are installed at the bottom of the test platform 1. The two exhaust mechanisms correspond to the positions of the two through holes 8 respectively.
[0019] The positions of cylinder 5 and smoke hole 9 are corresponding.
[0020] like Figure 1 and Figure 2 As shown, the moving mechanism includes a motor 2 fixedly installed on the top of the testing platform 1. A rotating shaft 4 is fixedly installed on the output shaft of the motor 2. An external thread is opened on the rotating shaft 4, and a sliding block 14 is threaded on the external thread. A connecting rod 13 is fixedly installed on the side of the sliding block 14. The end of the connecting rod 13 away from the sliding block 14 is fixedly installed on the side of the side baffle 7, which is parallel to the sliding block 14. When the size of the door and window is different, after the door and window contact the two side baffles 7, the center of the door and window does not correspond to the cylinder 5 and the smoke hole 9. At this time, when the protective pad 11 is pressed down, it cannot press the four sides of the door and window to the center. At this time, the motor 2 can be started. The output shaft of the motor 2 rotates and drives the rotating shaft 4 to rotate. The rotation of the rotating shaft 4 drives the external thread to rotate, thereby driving the sliding block 14 to move. The movement of the sliding block 14 drives the connecting rod 13 to move. The movement of the connecting rod 13 drives the side baffle 7 to move, thereby realizing the position adjustment of the side baffle 7. After the door and window are placed, the center position of its four sides corresponds to the position of the L-shaped column 10 and the two rectangular rods 12.
[0021] like Figure 2 As shown, a T-shaped slide rail 15 is fixedly installed on the top of the testing platform 1, and a sliding block 14 is slidably installed on the top of the T-shaped slide rail 15. A rotating seat is installed on the top of the testing platform 1, and the end of the rotating shaft 4 away from the motor 2 is rotatably installed on the side of the rotating seat. The T-shaped slide rail 15 is used to limit the sliding block 14, allowing it to slide only. The rotating seat allows the rotating shaft 4 to rotate stably.
[0022] like Figure 1 and Figure 2As shown, the two connecting rods 13 are staggered. The advantage of this arrangement is that it does not affect the movement of the two sliding blocks 14 in driving the two side baffles 7 respectively.
[0023] like Figure 4 As shown, the exhaust mechanism includes a sealing box 19 fixedly installed at the bottom of the testing platform 1. An L-shaped tube 17 and a straight tube 24 are fixedly installed on both sides of the sealing box 19, respectively. The top end of the L-shaped tube 17 is fixedly connected to the inner wall of the through hole 8. A fan 23 is fixedly installed on the inner wall of the sealing box 19. A threaded hole is opened on one side of the inner wall of the L-shaped tube 17, and a sealing component is installed in the threaded hole. The sealing component includes a threaded rod 26 threaded in the threaded hole. Both ends of the threaded rod 26 extend outside the threaded hole. A guide plate 22 is rotatably installed on one end of the threaded rod 26. A sealing block 20 is fixedly installed on the side of the guide plate 22. The sealing block 20 abuts against the inner wall of the sealing box 19. The sealing block 20 corresponds to the position of the L-shaped tube 17. The sealing block 20 can seal one end of the L-shaped tube 17. After the test is completed, first turn a knob 25 to make the threaded rod 26 move spirally, thereby moving the guide plate 22. The movement of the guide plate 22 makes the sealing block 20 and the L-shaped tube 17 staggered. Then, by starting the fan 23, the fan 23 can draw the smoke located under the door and window into the straight pipe 24. The straight pipe 24 can be connected to the outside. When the smoke pressure is normal, turn another knob 25 to make another sealing block 20 staggered from the L-shaped tube 17. Then, start another fan 23. The two fans 23 draw air in opposite directions, thereby drawing air from the outside and thus drawing out the smoke located under the door and window.
[0024] like Figure 4 As shown, guide rods 21 are fixedly installed on the inner walls of both sides of the sealed box 19. The guide plate 22 is slidably sleeved on the two guide rods 21. A knob 25 is fixedly installed on the end of the threaded rod 26 away from the guide plate 22. The guide rods 21 are designed so that the guide plate 22 can only move along the direction of the guide rods 21.
[0025] like Figure 2 As shown, a T-shaped hole is provided at the top of the side baffle 7, and a T-shaped slider 16 is slidably installed in the T-shaped hole. The side of the T-shaped slider 16 is fixedly connected to one end of the rectangular rod 12. The advantage of this arrangement is that after the position of the side baffle 7 is adjusted, the positions of the rectangular rod 12 and the protective pad 11 are also adjusted, thereby pressing down on the side of the door and window.
[0026] Working principle: When in use, place the door and window on top of the sealing gasket 3, with the two side baffles 7 set at a 90-degree angle. When placing the door and window, make the two sides of the door and window contact the two side baffles 7 respectively for initial positioning. At this time, the cylinder 5 and the smoke hole 9 are located in the center of the door and window. Then, by starting the cylinder 5, the output end of the cylinder 5 stretches and drives the L-shaped column 10 and the two rectangular rods 12 to move downward, thereby causing the protective pad 11 to move downward. This can press the four sides of the door and window tightly onto the top of the sealing gasket 3, so that a sealed space is formed between the four sides of the door and window and the sealing gasket 3. Then, smoke is discharged through smoke generator 18. The smoke enters the area below the door and window through smoke hole 9. The smoke is located in the space between the four sides of the door and window and the sealing gasket 3 and has a certain pressure. When the door and window leak air, the smoke will be discharged through the leak. After the test is completed, first turn a knob 25 to make the threaded rod 26 move spirally, thereby moving the guide plate 22. The movement of the guide plate 22 makes the sealing block 20 and the L-shaped tube 17 staggered. Then, by starting the fan 23, the fan 23 can draw the smoke located below the door and window into the straight pipe 24. The straight pipe 24 can be connected to the outside. When the smoke pressure is normal, turn another knob 25 to make another sealing block 20 staggered from the L-shaped tube 17. Then, start another fan 23. The two fans 23 have opposite air extraction directions, so air can be drawn from the outside, thereby drawing out the smoke located below the door and window. When the sizes of the doors and windows are different, after the doors and windows come into contact with the two side baffles 7, the center of the doors and windows does not correspond to the cylinder 5 and the smoke hole 9. At this time, when the protective pad 11 is pressed down, it cannot press the four sides of the door and window to the center. At this time, the motor 2 can be started. The output shaft of the motor 2 rotates and drives the rotating shaft 4 to rotate. The rotating shaft 4 rotates and drives the external thread to rotate, thereby driving the sliding block 14 to move. The sliding block 14 moves and drives the connecting rod 13 to move. The connecting rod 13 moves and drives the side baffle 7 to move, thereby realizing the position adjustment of the side baffle 7. After the doors and windows are placed, the center of the four sides corresponds to the position of the L-shaped column 10 and the two rectangular rods 12.
[0027] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A door and window airtightness testing device, characterized in that: Includes a testing station (1), and a sealing gasket (3) is fixedly installed on the top of the testing station (1); Two side baffles (7) are provided above the testing platform (1). The two side baffles (7) are vertically arranged. A moving mechanism for driving the side baffles (7) to move is installed on the top of the testing platform (1). An L-shaped plate (6) is fixedly installed on the side of the testing platform (1). A cylinder (5) is fixedly installed on the top of the L-shaped plate (6). The movable end of the cylinder (5) passes through the top of the L-shaped plate (6) and is fixedly installed with an L-shaped column (10). Rectangular holes are opened at both ends of the L-shaped column (10). The two rectangular holes are staggered. A rectangular rod (12) is slidably installed in each of the two rectangular holes. The ends of the two rectangular rods (12) away from the L-shaped column (10) are slidably connected to two side baffles (7). Protective pads (11) are installed at the bottom of the two rectangular rods (12) and the bottom of the L-shaped column (10). The sealing gasket (3) and the test platform (1) have two through holes (8) and a smoke hole (9) on their tops. A smoke generator (18) is fixedly installed at the bottom of the test platform (1). The exhaust end of the smoke generator (18) is fixedly connected to the inner wall of the smoke hole (9). Two exhaust mechanisms are installed at the bottom of the test platform (1), and the two exhaust mechanisms correspond to the positions of the two through holes (8) respectively.
2. The door and window airtightness testing device according to claim 1, characterized in that: The moving mechanism includes a motor (2) fixedly installed on the top of the testing table (1). The output shaft of the motor (2) is fixedly installed with a rotating shaft (4). The rotating shaft (4) has an external thread. A sliding block (14) is threaded on the external thread. A connecting rod (13) is fixedly installed on the side of the sliding block (14). The end of the connecting rod (13) away from the sliding block (14) is fixedly installed on the side of a side baffle (7) that is parallel to the sliding block (14).
3. The door and window airtightness testing device according to claim 2, characterized in that: The top of the testing platform (1) is fixedly installed with a T-shaped slide rail (15), the sliding block (14) is slidably installed on the top of the T-shaped slide rail (15), the top of the testing platform (1) is installed with a rotating seat, and the end of the rotating shaft (4) away from the motor (2) is rotatably installed on the side of the rotating seat.
4. The door and window airtightness testing device according to claim 2, characterized in that: The two connecting rods (13) are staggered.
5. The door and window airtightness testing device according to claim 1, characterized in that: The exhaust mechanism includes a sealed box (19) fixedly installed at the bottom of the test bench (1). An L-shaped tube (17) and a straight tube (24) are fixedly installed on both sides of the sealed box (19). The top end of the L-shaped tube (17) is fixedly connected to the inner wall of the through hole (8). A fan (23) is fixedly installed on the inner wall of the sealed box (19). A threaded hole is opened on one side of the inner wall of the L-shaped tube (17), and a sealing component is installed in the threaded hole.
6. The door and window airtightness testing device according to claim 5, characterized in that: The sealing assembly includes a threaded rod (26) threaded into a threaded hole, both ends of which extend outside the threaded hole. A guide plate (22) is rotatably mounted on one end of the threaded rod (26), and a sealing block (20) is fixedly mounted on the side of the guide plate (22). The sealing block (20) abuts against the inner wall of the sealing box (19), and the sealing block (20) corresponds to the position of the L-shaped tube (17).
7. The door and window airtightness testing device according to claim 6, characterized in that: Guide rods (21) are fixedly installed on the inner walls of both sides of the sealed box (19). The guide plate (22) is slidably sleeved on the two guide rods (21). A knob (25) is fixedly installed on the end of the threaded rod (26) away from the guide plate (22).
8. The door and window airtightness testing device according to claim 1, characterized in that: The top of the side baffle (7) is provided with a T-shaped hole, and a T-shaped slider (16) is slidably installed in the T-shaped hole. The side of the T-shaped slider (16) is fixedly connected to one end of the rectangular rod (12).