Multi-point pop-out door bottom automatic sealing device

Abstract

This invention discloses a multi-point pop-out automatic sealing device for the bottom of a door, comprising an aluminum shell installed at the bottom of the door leaf. The aluminum shell contains a first receiving cavity and a second receiving cavity, with the bottom of the first receiving cavity open. An aluminum core and a sealing strip are installed in the first receiving cavity, with the sealing strip located below the aluminum core. The second receiving cavity contains a pop-out component that pushes out and seals the aluminum core and sealing strip when the door is closed. This invention mounts the aluminum shell on the door leaf using a bracket, ensuring even force distribution on the aluminum shell. The pop-out component is connected to the aluminum core via evenly spaced spring clips, solving the problem of tilting and incomplete sealing caused by friction between the sealing strip and the ground. The vertical edge of the sealing strip seals the gap between the sealing strip, the aluminum core, and the aluminum shell, reducing resistance while ensuring a good seal and extending service life.

Description

Technical Field

[0001] This invention relates to the field of door bottom sealing structure technology, specifically to a multi-point pop-out automatic door bottom sealing device. Background Technology

[0002] Automatic door sealing devices are typically installed at the bottom of the door. When the door is closed, the door frame presses against the adjusting nut of the automatic door sealing device, causing the pop-out component to push the aluminum core downward. The sealing strip at the bottom of the aluminum core seals the gap between the door and the ground.

[0003] Currently, surface-mounted automatic door bottom sealing devices on the market simply have a row of fixing screws at the top, which secure the aluminum core to the sealing strip. During door closing, the door frame gradually presses against the adjusting nut of the automatic door bottom sealing device. The sealing strip contacts the ground before the door is fully closed. When the door closes, the sealing strip drags and rubs against the ground, causing the surface-mounted automatic door bottom sealing device to tilt, thus affecting the sealing effect and shortening its lifespan.

[0004] Furthermore, to ensure that there is no resistance during the downward movement and rebound process after the aluminum core and sealing strip are combined, a certain gap is reserved between the aluminum core, sealing strip and aluminum shell. This gap means that the automatic sealing device at the bottom of the door cannot achieve a complete seal.

[0005] In addition, the existing aluminum core is not strong enough, and the pressure applied to different parts of the aluminum core by the commonly used pop-up components is uneven, which causes the entire sealing strip to not fully adhere to the ground, resulting in poor sealing effect on the bottom surface. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a multi-point pop-out automatic door bottom sealing device to solve the problems of poor sealing effect and short service life of existing door bottom sealing devices.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows.

[0008] A multi-point pop-out automatic sealing device for the bottom of a door includes an aluminum shell installed at the bottom of the door leaf. The aluminum shell has a first receiving cavity and a second receiving cavity inside. The bottom of the first receiving cavity is open. The second receiving cavity is located above the first receiving cavity and is connected to the first receiving cavity through a central connecting groove. An aluminum core and a sealing strip are installed in the first receiving cavity, with the sealing strip located below the aluminum core. The second receiving cavity has a pop-out component that pushes out and seals the aluminum core and sealing strip when the door is closed.

[0009] The aforementioned multi-point pop-out door bottom automatic sealing device has vertically arranged sealing strip edges on both sides of the top of the sealing strip. The inner side of the sealing strip edge is attached to the outer side of the lower part of the aluminum core. A sealing strip clip is provided on the inner side of the upper end of the sealing strip edge. Sealing strip grooves that engage with the sealing strip clips are provided on both sides of the upper part of the aluminum core. The bottom of the sealing strip clip is inclined downward toward the center of the sealing strip.

[0010] The aforementioned multi-point pop-out door bottom automatic sealing device also includes a triangular cavity inside the aluminum core to prevent bending and deformation of the aluminum core.

[0011] The aforementioned multi-point pop-out automatic sealing device for the bottom of the door includes a pop-out component comprising a pushing mechanism that moves into the aluminum shell under the pressure of the door leaf and door frame, and a spring-force pressing mechanism that drives the aluminum core and sealing strip to move down synchronously under the pushing of the pushing mechanism.

[0012] The aforementioned multi-point pop-out automatic sealing device for the bottom of the door includes a pushing mechanism comprising a pushing block disposed inside an aluminum shell. The pushing block is connected to an adjusting nut via a screw. The adjusting nut is located on the side of the door leaf that is hinged to the door frame. A positioning block is disposed inside the aluminum shell and is slidably connected to the screw. A spring is fitted on the outside of the screw located between the positioning block and the pushing block. One end of the spring is connected to the positioning block, and the other end is connected to the pushing block.

[0013] The aforementioned multi-point pop-out door bottom automatic sealing device includes a spring-loaded pressing mechanism comprising a transmission bar slidably installed inside the second receiving cavity. One end of the transmission bar abuts against the push block, and the transmission bar is equipped with evenly spaced first spring pieces. The lower end of the first spring pieces passes through the bottom connecting groove of the second receiving cavity and connects to the aluminum core.

[0014] The aforementioned multi-point pop-out door bottom automatic sealing device has a transmission bar at one end away from the push block connected to a second spring. The second spring consists of two symmetrically arranged first springs. The middle part of the second spring is connected to the aluminum core, and the other end of the second spring is connected to the fixing block, which is installed inside the aluminum shell.

[0015] The aforementioned multi-point pop-out automatic sealing device for the bottom of the door has an aluminum shell installed on the bottom side of the door leaf via a bracket. The upper and lower ends of the bracket are respectively provided with track slots, and the upper and lower ends of the aluminum shell near the bracket are respectively provided with track shafts, which are inserted and connected to the track slots.

[0016] Due to the adoption of the above technical solutions, the technical progress achieved by this invention is as follows.

[0017] This invention provides a multi-point pop-out automatic door bottom sealing device. An aluminum shell is mounted on the door leaf via a bracket, which ensures uniform force distribution on the aluminum shell. Simultaneously, the pop-out component is connected to the aluminum core via evenly distributed spring clips, making the force applied to the aluminum core more balanced. This ensures the aluminum core and sealing strip move smoothly downwards, solving the problem of tilting and incomplete sealing caused by friction between the sealing strip and the ground. Because the sealing strip, aluminum core, and aluminum shell are intermittently positioned in the initial state, there is no resistance during downward movement and rebound. By providing vertical edges of the sealing strip on both sides of the top of the sealing strip that adhere to the outside of the aluminum core, the vertical edges of the sealing strip arch outwards under the constraint of the sealing strip and aluminum core during sealing. These vertical edges adhere to the inner wall of the aluminum shell, sealing the gap between the sealing strip, aluminum core, and aluminum shell. This reduces resistance while further ensuring the sealing effect and extending the service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the specific structure of the present invention; Figure 2 This is a schematic diagram of the sealing strip in its popped-out state. Figure 3 This is a schematic diagram of the specific structure of the present invention installed at the bottom of the door leaf; Figure 4 This is a structural diagram of the aluminum shell and bracket before assembly; Figure 5 This is a side view of the aluminum core; Figure 6 This is a side view of the sealing strip; Figure 7 This is a schematic diagram of the specific structure of the pop-up component; Figure 8 A schematic diagram of the specific structure of the driving mechanism; Figure 9 A schematic diagram of the specific structure of the elastic pressing mechanism; Figure 10 A schematic diagram showing the specific structure of the connection between the bracket and the door leaf; Figure 11 This is a schematic diagram of the connection structure between the aluminum shell and the door when the door is open.

[0019] Among them: 101. Aluminum shell, 102. Bracket, 103. Aluminum core, 104. Sealing strip, 105. Pop-out assembly, 106. Door frame, 107. Door leaf, 108. Track slot, 109. Track shaft, 110. First receiving cavity, 111. Second receiving cavity, 112. Triangular cavity, 113. Sealing strip slot, 114. Sealing strip vertical edge, 115. Sealing strip block, 116. Push block, 117. Screw, 118. Spring, 119. Adjusting nut, 120. Transmission bar, 121. First spring, 122. Second spring, 123. Fixing block, 124. Connecting hole, 125. Positioning block. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Multi-point pop-out automatic sealing device at the bottom of the door, such as Figures 1 to 11 As shown, the door includes an aluminum shell 101 installed at the bottom of the door leaf 107. The bottom of the aluminum shell 101 is open. The aluminum shell 101 has a first receiving cavity 110 and a second receiving cavity 111. The second receiving cavity 111 is located above the first receiving cavity 110 and is connected to the first receiving cavity 110 through a central connecting groove. An aluminum core 103 and a sealing strip 104 are installed in the first receiving cavity 110. The sealing strip 104 is located below the aluminum core 103. The bottom of the first receiving cavity 110 is open to facilitate the sealing strip to pop out and seal. The second receiving cavity 111 has a pop-out component 105 that pushes out and seals the aluminum core 103 and the sealing strip 104 when the door is closed.

[0022] The aluminum shell 101 is installed on the bottom side of the door leaf 107 via brackets 102. The brackets 102 are spaced apart along the surface of the door leaf 107, and the aluminum shell 101 is snapped into the brackets 102. Figure 10 As shown, bracket 102 is installed on the door leaf by bolts, which can ensure that the aluminum shell is stably installed on the door leaf and fits against the door leaf surface to ensure sealing.

[0023] The upper and lower ends of the bracket 102 are respectively provided with track slots 108. The upper and lower ends of the aluminum shell 101 near the bracket 102 are respectively provided with track shafts 109. The track shafts 109 are inserted into the track slots 108. Through the connection between the upper and lower track shafts and the track slots, it can be ensured that the aluminum shell is subjected to uniform force, and the sealing device is prevented from tilting due to ground friction when the rubber strip pops out.

[0024] The top two sides of the sealing strip 104 are respectively provided with vertically arranged sealing strip edges 114, such as... Figure 6As shown, the inner side of the vertical edge 114 of the sealing strip is attached to the outer side of the lower part of the aluminum core 103. A sealing strip clip 115 is provided on the inner side of the upper end of the vertical edge 114 of the sealing strip. Sealing strip grooves 113 that engage with the sealing strip clips 115 are respectively provided on both sides of the upper part of the aluminum core 103. The bottom of the sealing strip clip 115 is inclined downward toward the center of the sealing strip, that is, the sealing strip clip is hooked in the sealing strip groove. The sealing strip and the aluminum core are stably connected by the engagement of the sealing strip groove and the sealing strip clip.

[0025] The aluminum core 103 also has a triangular cavity 112 inside, such as Figure 5 As shown, the triangular cavity design prevents the aluminum core from bending or deforming when it pops out downwards, making the pressure of the aluminum core on the sealing strip more even, thus achieving a better sealing effect.

[0026] The lower part of the aluminum core 103 is also provided with a T-shaped slot, and the top center of the sealing strip 104 is provided with a T-shaped block that connects to the T-shaped slot. The height of the horizontal part of the T-shaped slot is greater than the height of the horizontal part of the T-shaped block.

[0027] When the door is closed, the sealing strip gradually touches the ground under the action of the pop-out component. At this time, the aluminum core continues to move downward under the action of the pop-out component. When the bottom of the aluminum core contacts the top of the sealing strip, the vertical edges of the sealing strip on both sides will arch outward until they abut against the inside of the aluminum shell. This ensures the sealing between the door leaf and the ground, and also seals the gap between the aluminum shell and the aluminum core, ensuring a good sealing effect.

[0028] The pop-out component 105 includes a pushing mechanism and a spring-force pressing mechanism, such as Figure 8 As shown, the pushing mechanism includes a pushing block 116 disposed inside the aluminum shell 101. The pushing block 116 is connected to the adjusting nut 119 via a screw 117. The adjusting nut 119 is located on the side of the door leaf 107 that is hinged to the door frame 106. A positioning block 125 is disposed inside the aluminum shell 101 and is slidably connected to the screw 117.

[0029] A spring 118 is fitted on the outside of the screw 117 located between the positioning block 125 and the push block 116. One end of the spring 118 is connected to the positioning block 125, and the other end is connected to the push block 116, which is used to drive the adjusting nut to reset.

[0030] The adjusting nut 119 has a square structure, which can prevent the adjusting nut from rotating inside the aluminum shell. When it is necessary to adjust the pop-out distance of the adjusting nut, pull the adjusting nut 119 out of the aluminum shell 101, rotate the adjusting nut, adjust the distance between the end of the adjusting screw and the inner end face of the adjusting nut, and adjust the pop-out distance. After the adjustment is completed, put the adjusting nut back into the aluminum shell so that the adjusting nut can only move horizontally.

[0031] When the door is closed, the adjusting nut 119 contacts the door frame 106 and is pressed forward by the door frame 106, which drives the push block 116 to move forward, thereby pushing the spring pressing mechanism to press down the aluminum core and the sealing strip to seal.

[0032] The elastic pressing mechanism includes a transmission bar 120 slidably mounted inside the second receiving cavity 111, such as... Figure 9 As shown, one end of the transmission bar 120 abuts against the push block 116. The transmission bar 120 is equipped with evenly spaced first spring pieces 121. There are no fewer than two first spring pieces 121. The lower end of the first spring piece 121 passes through the bottom connecting groove of the second receiving cavity 111 and is connected to the aluminum core 103.

[0033] The other end of the transmission bar 120 is connected to the second spring 122, which is composed of two symmetrically arranged first springs 121. The middle part of the second spring 122 is connected to the aluminum core 103, and the other end of the second spring 122 is connected to the fixing block 123. The fixing block 123 is installed inside the aluminum shell 101.

[0034] Since the fixed block is fixedly connected to the aluminum shell, when the transmission bar drives the first and second springs to push forward, the aluminum core is subjected to a forward thrust in addition to the downward pressure. When the first and second springs move, the aluminum core will also move forward slightly. Under the limitation of the fixed block, the right half of the second spring, which is connected to the fixed block and the aluminum core, will push upward, giving the aluminum core a force in the opposite direction, thus preventing the aluminum core from sliding out of the aluminum shell under the push of the first and second springs.

[0035] The lower end of the first spring piece 121 and the middle part of the second spring piece 122 are respectively provided with connecting holes 124. The first spring piece 121 and the second spring piece 122 are respectively connected to the aluminum core 103 by connecting bolts passing through the connecting holes 124.

[0036] Because the first spring clips are evenly spaced, the sealing strip can move downwards simultaneously at multiple points under the action of the pop-up component, applying a uniform force to the aluminum core, ensuring that the sealing strip moves smoothly and adheres tightly to the ground, thereby improving the sealing effect.

[0037] When one of the springs is damaged, the other springs ensure that the sealing strip can be reset smoothly, preventing the automatic sealing device at the bottom of the door from getting stuck on the ground and obstructing the opening of the door.

[0038] When the door is closed, as the door rotates, the adjusting nut abuts against the door frame and moves into the aluminum shell. This causes the push block to move via the screw. At this time, the push block causes the spring to stretch and deform, and the push block pushes the transmission bar forward.

[0039] The first spring and the left half of the second spring near the transmission bar bend downward under the squeezing action of the transmission bar, thereby pressing down the aluminum core and causing the aluminum core and the sealing strip to move downward synchronously. Meanwhile, the right half of the second spring arches upward in the opposite direction under the limitation of the fixing block, giving the aluminum core a force in the opposite direction, preventing the aluminum core from being pushed out of the aluminum shell, thereby making stable contact between the sealing strip and the ground and sealing it.

[0040] When the door is opened, the adjusting bolt automatically resets under the action of the spring. At the same time, the first spring plate drives the aluminum core to reset. During the reset process, the aluminum core resets normally. After the sealing strips on both sides reset, they move upward with the aluminum core until the bottom of the sealing strip is flush with the bottom of the aluminum shell.

[0041] This invention provides a multi-point pop-out automatic door bottom sealing device. An aluminum shell is mounted on the door leaf via a bracket, which ensures uniform force distribution on the aluminum shell. Simultaneously, the pop-out component is connected to the aluminum core via evenly distributed spring clips, making the force applied to the aluminum core more balanced. This ensures the aluminum core and sealing strip move smoothly downwards, solving the problem of tilting and incomplete sealing caused by friction between the sealing strip and the ground. Because the sealing strip, aluminum core, and aluminum shell are intermittently positioned in the initial state, there is no resistance during downward movement and rebound. By providing vertical edges of the sealing strip on both sides of the top of the sealing strip that adhere to the outside of the aluminum core, the vertical edges of the sealing strip arch outwards under the constraint of the sealing strip and aluminum core during sealing. These vertical edges adhere to the inner wall of the aluminum shell, sealing the gap between the sealing strip, aluminum core, and aluminum shell. This reduces resistance while further ensuring the sealing effect and extending the service life.

Claims

1. A multi-point pop-out automatic sealing device for the bottom of a door, comprising an aluminum shell (101) installed at the bottom of the door leaf (107), characterized in that: The aluminum shell (101) is provided with a first receiving cavity (110) and a second receiving cavity (111) respectively. The bottom of the first receiving cavity (110) is open. The second receiving cavity (111) is located above the first receiving cavity (110) and is connected to the first receiving cavity (110) through a central connecting groove. An aluminum core (103) and a sealing strip (104) are installed in the first receiving cavity (110). The sealing strip (104) is located below the aluminum core (103). The second receiving cavity (111) is provided with a pop-out component (105) that pushes out and seals the aluminum core (103) and the sealing strip (104) when the door is closed.

2. The multi-point pop-out door bottom automatic sealing device according to claim 1, characterized in that: The sealing strip (104) has vertically arranged sealing strip edges (114) on both sides of its top. The inner side of the sealing strip edge (114) is attached to the lower outer side of the aluminum core (103). The upper inner side of the sealing strip edge (114) is provided with a sealing strip clip (115). The upper sides of the aluminum core (103) are provided with sealing strip grooves (113) that are engaged with the sealing strip clip (115). The bottom of the sealing strip clip (115) is inclined downward toward the center of the sealing strip.

3. The multi-point pop-out door bottom automatic sealing device according to claim 1, characterized in that: The aluminum core (103) also has a triangular cavity (112) inside to prevent the aluminum core from bending and deforming.

4. The multi-point pop-out door bottom automatic sealing device according to claim 1, characterized in that: The pop-out assembly (105) includes a pushing mechanism that moves into the aluminum shell (101) under the pressure of the door leaf (107) and the door frame (106), and a spring-loaded pressing mechanism that drives the aluminum core (103) and the sealing strip (104) to move down synchronously under the push of the pushing mechanism.

5. The multi-point pop-out door bottom automatic sealing device according to claim 4, characterized in that: The pushing mechanism includes a pushing block (116) disposed inside the aluminum shell (101). The pushing block (116) is connected to an adjusting nut (119) via a screw (117). The adjusting nut (119) is located on the side of the door leaf (107) which is hinged to the door frame (106). A positioning block (125) is disposed inside the aluminum shell (101) and is slidably connected to the screw (117). A spring (118) is fitted on the outside of the screw (117) located between the positioning block (125) and the pushing block (116). One end of the spring (118) is connected to the positioning block (125), and the other end is connected to the pushing block (116).

6. The multi-point pop-out door bottom automatic sealing device according to claim 5, characterized in that: The elastic pressing mechanism includes a transmission bar (120) slidably installed inside the second receiving cavity (111). One end of the transmission bar (120) abuts against the push block (116). The transmission bar (120) is equipped with evenly spaced first spring pieces (121). The lower end of the first spring pieces (121) passes through the bottom connecting groove of the second receiving cavity (111) and is connected to the aluminum core (103).

7. The multi-point pop-out door bottom automatic sealing device according to claim 6, characterized in that: One end of the transmission bar (120) away from the push block (116) is connected to the second spring (122). The second spring (122) is composed of two symmetrically arranged first springs (121). The middle part of the second spring (122) is connected to the aluminum core (103). The other end of the second spring (122) is connected to the fixing block (123). The fixing block (123) is installed inside the aluminum shell (101).

8. The multi-point pop-out door bottom automatic sealing device according to claim 1, characterized in that: The aluminum shell (101) is installed on the bottom side of the door leaf (107) via a bracket (102). The upper and lower ends of the bracket (102) are respectively provided with track slots (108). The upper and lower ends of the aluminum shell (101) near the bracket (102) are respectively provided with track shafts (109). The track shafts (109) are inserted into the track slots (108).

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