Sealing locking device for sealing door

Abstract

A sealing locking device for sealing doors relates to the technical field of sealed doors, comprising a door and a door frame. The door is arranged on the door frame via a door shaft; a sealing groove is arranged on the edge of the door, and a sealing strip is arranged in the sealing groove; the door shaft is a double-rotating shaft; a rotating disk is arranged on the door, and the rotating disk drives a latch arranged on the door side by controlling a hydraulic transmission device or a mechanical transmission device, and the latch interacts with a pin groove arranged on the door frame to achieve the closing and opening of the door. The beneficial effects of the present invention are: a double-axis structure is adopted between the door and the frame, so that the door can move inward more flexibly; the door and the frame adopt a rotatable latch and a pin hole to cooperate, so that the door can be tightened inward; the sealing groove strips between the door edge and the left and right doors are strictly arranged to meet the sealing requirements. The rotating disk and the arrangement similar to a planetary gear make the sealing operation of the sealed door very easy.

Description

Technical Field

[0001] The present invention relates to the technical field of doors, and more particularly to a sealed door. Background Art

[0002] In existing technology, some specialized areas, such as ammunition depots and hazardous materials warehouses, have stringent safety and sealing requirements for security reasons. However, existing protective doors typically utilize a single-axis connection to the door frame and lack a sealing and compression device, preventing the door from closing inwards to seal. Consequently, they suffer from a lack of sealing. Conventional sealed doors, particularly larger ones, suffer from two issues with their sealing devices and operating handles: first, they are laborious to operate; second, the seal is insufficient.

[0003] Based on the above problems, the applicant has developed "a sealing locking device for sealing doors". Summary of the Invention

[0004] The object of the present invention is to provide a sealing locking device for a sealing door, which has the characteristics of good sealing effect and easy operation.

[0005] The specific embodiments of the present invention are as follows:

[0006] A sealing locking device for sealing a door, comprising a door and a door frame, wherein the door is arranged on the door frame via a door shaft; a sealing groove is arranged on the edge of the door and / or the door frame, and a sealing strip is arranged in the sealing groove; the device is characterized in that: the door shaft is a double rotating shaft; a rotating disk is arranged on the door, and the rotating disk drives a latch arranged on the door side by controlling a hydraulic transmission device or a mechanical transmission device, and the latch interacts with a pin groove arranged on the door frame to achieve the closing and opening of the door.

[0007] further:

[0008] The structure of the double rotating shaft is as follows: two shafts are placed in their respective shaft sleeves, and the two shaft sleeves are fixed together by welding or other means; a pair of frame plates are placed on the upper and lower shafts of the shaft sleeves respectively, and can rotate around the shafts; two pairs of frame plates, one pair is fixed on the door frame, and the other pair is fixed on the door.

[0009] The hydraulic transmission device refers to: its switching and sealing are carried out by an oil pump; the guide switch is used to control the oil supply, stop and oil return of the oil circuit; by rotating the rotating disk, the oil cylinder is extended and retracted, and the oil cylinder pushes and pulls the pin push-pull rod to insert or pull out the pin hole to realize the opening and closing of the door, and the door is tightened and sealed with the door frame while closing.

[0010] The mechanical transmission device refers to a device in which the door is opened and closed and sealed by a gear, a rack and a latch push-pull rod: rotating the rotating disk rotates the gear or the rack, driving the latch push-pull rod to insert or pull the latch into or out of the pin hole, thereby realizing the opening and closing of the door; and when the door is closed, it is tightened and sealed with the door frame.

[0011] The mechanical transmission device refers to: a door-shaped bracket with the lower end fixed on the door, the central axis movably placed on the bracket, and a rotating disk provided on the upper end; a circular disc is fixed on the central axis, a central gear is provided on the central axis below the circular disc, and two gear shafts symmetrical relative to the center of the circle are provided on the circular disc, and gears are provided on the gear shafts, and the gears mesh with the central gear inwardly and with the outer gear ring outwardly; one or more shafts are provided near the edge of the circular disc, and if two shafts are provided, they are symmetrical relative to the center of the circle, and a toggle rod is connected to the shaft, and the other end of the toggle rod is movably connected to one end of the rotating rod, and the rotating rod uses the middle part as the axis, and one end or both ends of the rotating rod are movably connected to a latch push-pull rod, and the outer end of the latch push-pull rod is connected to the latch.

[0012] The structure of the latch is as follows: the latch seat is fixed to the door, and four plate rods are provided on the latch seat, which are connected end to end by shafts, one of which is provided on the latch seat, and one of the plate rods is a latch; an active rod is movably connected to a shaft that is not connected to the latch, and the active rod is driven by the latch push-pull rod, so that the square connection structure of the plate rods can drive the latch to rotationally extend or retract; a pin hole corresponding to the latch is provided on the door frame.

[0013] The structure of the latch is as follows: the latch is in the shape of a rectangular plate, movably connected to the door via a shaft, and the end is movably connected to the active rod via a shaft. A corresponding pin hole is provided on the door frame, and the pin hole is trapezoidal, tilted toward the inside of the door, with a larger top and a smaller bottom, or a smaller top and a larger bottom. When closing the door, the active rod pushes the latch to rotate in the pin hole. Since the pin hole is tilted toward the inside of the door, the door is pressed against the door frame.

[0014] The door includes a left door and a right door; the left door and the right door are connected to the door frame respectively through door shafts, and a rotating disk is provided inside the left door and the right door; a small door is provided on the left door or the right door, and a rotating disk is provided inside and outside the small door; the left door and the right door are provided with latches on their sides, and the latches cooperate with pin holes provided on the frame.

[0015] A butt sealing groove is provided at the junction of the left door and the right door, and the two butt sealing grooves are opposite to each other and have built-in sealing strips; a groove is provided in the middle of the lower frame of the left door and the right door, and the groove is provided with a groove tongue, and the height of the groove tongue is 1 / 3-2 / 3 of the groove depth.

[0016] The structure of the latch push-pull rod is that two ends of the screw rod are provided with nuts and sleeve rods.

[0017] The present invention has the following advantages: a dual-axis structure between the door and the frame allows for more flexible inward movement; a rotatable latch and a pinhole engage the door and frame, allowing the door to be tightened inward; and a tightly arranged sealing groove between the door edge and the left and right doors ensures a tight seal. The rotating disk and planetary gear-like arrangement make closing the sealed door extremely easy.

[0018] In order to enable relevant construction personnel to better understand the scheme of the present invention and make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front structure of the present invention. Figure 2 This is a schematic diagram of the back structure of the present invention. Figure 3 -4 is a schematic diagram of the sealing strip of the present invention, Figure 5 This is a schematic diagram of the door shaft structure of the present invention. Figure 6 This is a schematic diagram of the door lower frame structure of the present invention. Figure 7 This is a schematic structural diagram of the locking device of the present invention. Figure 8 This is a schematic diagram of the latch structure of the present invention. Figure 9 —10 is a schematic diagram of another latch structure.

[0020] In the figure: right frame 1, door axis 2, door lock 3, upper frame 4, right door 5, left door 6, left frame 7, small door rotating disk 8, small door 9, lower frame 10, left door rotating disk 11, left door guide switch 12, right door rotating disk 13, right door guide switch 14, pin hole 15, left door sealing groove 16, left door docking sealing groove 17, right door docking sealing groove 18, right door sealing groove 19, small door sealing groove 20, shaft 21, shaft sleeve 22, frame plate 23, welding point 24, groove 31, groove tongue 32, right door lower pin hole 33, left door lower pin hole 34, Gear 41, gear shaft 42, ring gear 43, bracket 44, center gear 45, central shaft 46, disk 47, shaft 48, toggle lever 49, shaft 50, shaft 51, rotating rod 52, shaft 53, sleeve rod 54, nut 55, screw 56, sleeve rod 57, shaft 58, pin 59, pin seat 591, shaft 592, bottom plate rod 593, shaft 594, pin 595, shaft 596, plate rod 597, shaft 598, plate rod 599, active rod 5910, sealing strip 60, small door frame 61, shaft 62, pin 63, pin hole 64. DETAILED DESCRIPTION

[0021] like Figure 1 -8 shows a sealing locking device for sealing doors, comprising: a left door 6 and a right door 5. The left door 6 is arranged on the left frame 7 through a door shaft 2, and the right door 5 is arranged on the right frame 1 through a door shaft 2; the door shaft is a double rotating shaft.

[0022] like Figure 5As shown, the dual-shaft structure is as follows: two shafts 21 (i.e., one near the door frame shaft and one near the door shaft) are positioned within respective sleeves 22 (i.e., one near the door frame shaft and one near the door shaft). The two sleeves 22 are fixed together via welds 24 or other means. A pair of two frame plates 23 are positioned above and below the sleeves 22, sleeved onto the shafts 21, and rotatable about the shafts 21. One pair of frame plates 23 is fixed to the door frame (including the left side frame 7, the right side frame 1, and optionally the small door frame 61), and the other pair is fixed to the door (including the left door 6, the right door 5, and optionally the small door 9). This allows the door to rotate further relative to the door frame. During use, when the door (left door 6 or right door 5) is closed, the sleeves 22 are in place. However, the door can further compress the sealing strip under increased pressure. At this point, the two sleeves 22 rotate within a certain range around the near-door frame shaft as the door rotates, allowing the door (left door 6 or right door 5) to move inward. In contrast, if the door hinge adopts a single-axis structure, the rotation of the door is far less flexible and can not make the door seal tightly due to the constraints of the door hinge.

[0023] A small door 9 is provided on the right door 5 (or the left door 6). A door lock 3 is provided on the small door 9.

[0024] A small door rotating disk 8 is provided on the small door 9. After unlocking the door lock 3, the small door 9 can be opened by rotating the small door rotating disk 8. Thus, after entering through the small door 9, the left door 6 and / or the right door 5 can be opened to carry goods.

[0025] The left door rotating disk 11 and the right door rotating disk 13 have the same structure. They are used to drive latches (including latches 595 and latches 63) (latches can be set on the side of the door, the upper side of the door and the lower side of the door). The latches can be inserted into pin holes (including pin holes 15 and pin holes 64) (pin holes can be set in the door frame, the upper frame 4 and the lower frame 10), thereby fixing the doors (including the left door 6 and the right door 5) to the door frames (the right frame 1, the left frame 7, the upper frame 4 and the lower frame 10). Figure 6 The right door lower pin hole 33 and the left door lower pin hole 34 are shown.

[0026] The small door rotating disc 8 has the same structure as the left door rotating disc 11 and the right door rotating disc 13 (a different structure may also be used for the small door 9).

[0027] A sealing groove is provided on the edge of the door, and a sealing strip is placed in the sealing groove to seal the door. Figure 3 、 Figure 4 .in:

[0028] The left door 6 is provided with a left door sealing groove 16, which includes an upper side, a left side, and a lower side, and the grooves are all set inward, and a sealing strip is placed in the groove; a left door docking sealing groove 17 is provided at the joint with the right door 5, and the groove is set inward; a sealing strip is placed in the groove; a right door sealing groove 19 is provided on the right door 5, and the right door sealing groove 19 includes an upper side, a right side, and a lower side, and the grooves are all set inward, and a sealing strip is placed in the groove; a right door docking sealing groove 18 is provided at the joint with the left door 6, and the groove is set outward (see Figure 3 dotted line), opposite to the left door sealing groove 17; a sealing strip is placed in the groove. Figure 3 ( Figure 3 and Figure 2 (The left and right doors are similar, and both are on the back.) Because the right door's butt seal groove 18 faces outward and the left door's butt seal groove 17 faces inward (the left and right doors can also be interchanged, i.e., the right door's butt seal groove 18 faces inward and the left door's butt seal groove 17 faces outward), when the doors are closed, the right door's butt seal groove 18 and the left door's butt seal groove 17 face each other, and the two sealing strips press against each other. A groove 31 is provided in the middle of the lower frame 10 to provide space for the lower portions of the two sealing strips abutting the left and right doors 6, 5. This groove 31 is not completely transparent, but rather has a tongue 32, which is 1 / 3 to 2 / 3 the depth of the groove 31 and serves to seal the gap between the bottoms of the two sealing strips.

[0029] The small door 9 is provided with a small door sealing groove 20, in which a sealing strip 60 is placed. Figure 4 and Figure 7 .

[0030] The present invention is provided with a sealing locking device. The sealing locking device of the sealed door is described below by taking the small door 9 as an example (the left door 6 and the right door 5 have similar structures). Figure 7 、 Figure 8 ), the bracket 44 is in the shape of a door, and its two leg ends are fixed on the small door 9. A central axis 46 is provided in the middle hole on the upper part of the bracket 44, and the central axis 46 is fixed to the center of the disk 47. The upper end of the central axis 46 is connected to the small door rotating disk 8, that is, the disk 47 can be rotated by rotating the small door rotating disk 8; a central gear 45 is provided on the central axis 46 below the disk 47, and two gear shafts 42 are symmetrical relative to the center of the circle are provided on the disk 47. A gear 41 is provided on the gear shaft 42, and the gear 41 is meshed with the central gear 45 internally and meshed with the outer gear ring 43 externally; when the rotating disk 8 is rotated, the two gears 41 rotate along the gear ring 43, and the operation is easy.

[0031] Two shafts 48 are also provided at the edge of the disc 47, which are symmetrical with respect to the center of the circle (the shafts 48 and the gear shaft 42 do not coincide, but may coincide). The shafts 48 are connected to the toggle lever 49, and the other end of the toggle lever 49 is provided with a shaft 50. The shaft 50 can be directly connected to the latch push-pull rod (such as Figure 7The lower left part) can also be connected to the latch push-pull rod (such as Figure 7 The lower right part), the latch push-pull rod movably connects the latch 59; wherein the latch push-pull rod can be set to an adjustable structure, which is connected by a screw in the middle, with a sleeve rod added at both ends, and the female thread of the sleeve rod coincides with the male thread on the screw for easy adjustment; the specific structure is (with Figure 7 The part with the icon in the lower right corner is described in text, and the lower left corner is similar to the lower right corner): the shaft 51 is fixed on the small door 9, and a rotating rod 52 is movably set on the shaft 51. With the shaft 51 as the center, the two ends of the rotating rod 52 are connected to the shaft 50 and the shaft 53. The shaft 53 is connected to the sleeve rod 54. The sleeve rod 54 and the sleeve rod 57 are connected by a screw rod 56. A nut 55 can be added to the screw rod 56 (one is set at each end of the sleeve rod 54 and the sleeve rod 57). In this way, the distance between the sleeve rod 54 and the sleeve rod 57 can be adjusted; the other end of the sleeve rod 57 is connected to the active rod 5910 of the pin 59 through the shaft 58.

[0032] The latch 59 is a locking device for the small door 9. It is a latch driven by a quadrilateral and is placed on the small door 9. The latch 59 acts on the pin hole of the small door frame 61. When the door is closed, the door can squeeze the sealing strip to make the door and the door frame seal more tightly. The structure of the latch 59 is as follows: Figure 8 As shown: the latch seat 591 is fixed on the small door 9, the shaft 592 is set on the latch seat 591, and the four plate rods (including the bottom plate rod 593, the latch 595, the plate rod 597, and the plate rod 599) are connected end to end through four shafts (including shaft 592, shaft 594, shaft 596, and shaft 598). One of the four plate rods (the forward end) is the latch 595 (the latch 595 is equivalent to a hook-shaped latch, which can be fan-shaped, triangular, trapezoidal, herringbone-shaped, semi-elliptical, T-shaped, L-shaped and other shapes). An active rod 5910 is set at the rear end of the four plate rods. The active rod 5910 is movably connected to an axis that is not connected to the latch 595. The extension and retraction of the active rod 5910 drives the rotation and retraction of the latch 595 through the quadrilateral connection structure. The specific structure is: the rear end of the bottom plate rod 593 is movably connected to the rear end of the plate rod 599 through the shaft 592, the front end of the plate rod 599 is connected to the rear end of the plate rod 597 through the shaft 598, the front end of the plate rod 597 is connected to one end of the pin 595 through the shaft 596, the other end of the pin 595 is connected to the front end of the bottom plate rod 593 through the shaft 594, and the shaft 598 is connected to the front end of the active rod 5910.

[0033] When in use, if you want to lock the sealed small door 9, rotate the small door rotating disk 8, and finally push the active rod 5910, and through the quadrilateral connecting structure, realize the rotation and extension of the latch 595, and the latch 595 cooperates with the pin hole 15 (the pin hole 15 is set on the door frame). The process of gradual extension of the latch 595 gradually tightens the small door 9 and the small door frame 61, and the sealing strip 59 is also compressed to achieve sealing; if you want to open the small door 9, retract the active rod 5910, and thus realize the rotation and retraction of the latch 595 through the quadrilateral connecting structure. The retraction process makes the door and the door frame relatively loose.

[0034] The left door 6 and the right door 5 can also adopt the above-mentioned sealing and locking device.

[0035] The opening and closing and sealing of the left door 6, the right door 5 and the small door 9 can also be performed by an oil pump, wherein:

[0036] The left door 6 is also equipped with a left door guide switch 12 with three positions: open, stop, and close. This switch controls the oil supply, stop, and return of the left door oil circuit. Rotating the left door rotating disk 11 causes the oil cylinder to extend and retract, driving the latch pin into or out of the pin hole. Simultaneously, the oil cylinder pushes and pulls the active rod 5910, engaging or disengaging the latch pin 595 with the pin hole 15, thereby tightening and sealing the door.

[0037] The right door 5 is also equipped with a right door guide switch 14 with three positions: open, stop, and close. This switch controls the oil supply, stop, and return of the right door oil circuit. Rotating the right door rotating disk 13 causes the oil cylinder to extend and retract, driving the latch pin into or out of the pin hole. Simultaneously, the oil cylinder pushes and pulls the active rod 5910, engaging or disengaging the latch pin 595 with the pin hole 15, thereby locking and sealing the door and releasing it.

[0038] The opening and closing and sealing of the left door 6, the right door 5 and the small door 9 can also be carried out by using gears, racks and rotating rods:

[0039] Rotating the left door rotating disk 11 rotates the gear or rack, which drives the rotating rod to move, allowing the latch to be inserted into or removed from the pin hole, thereby opening and closing the door. At the same time, the rotating rod pushes and pulls the active rod 5910 to engage or disengage the latch 595 with the pin hole 15, thereby tightening and sealing the door.

[0040] Rotating the right door rotating disk 13 rotates the gear or rack, which drives the rotating rod to move, inserting or removing the latch pin from the pin hole, thereby opening and closing the door. At the same time, the rotating rod pushes and pulls the active rod 5910 to engage or disengage the latch pin 595 with the pin hole 15, thereby tightening and sealing the door.

[0041] Figure 9 、 Figure 10The embodiment shows another structure of the latch and the pin hole. The latch 63 is movably connected to the small door 9 through the shaft 62, and the end is movably connected to the sleeve rod 57 through the shaft 58. A pin hole 64 is provided on the small door frame 61. The pin hole 64 is trapezoidal and inclined toward the inside of the door. It can be set to be large at the top and small at the bottom or small at the top and large at the bottom as needed (such as Figure 10 When in use, after the small door 9 is closed, the sleeve rod 57 pushes the latch 63 to rotate counterclockwise in the pin hole 64. Since the pin hole 64 is inclined toward the inner side of the door as it moves upward, the small door 9 is pressed tightly against the small door frame 61.

[0042] To sum up, the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A sealing locking device for sealing a door, comprising a door and a door frame, wherein the door is mounted on the door frame via a door shaft; a sealing groove is provided on an edge of the door and / or the door frame, and a sealing strip is provided in the sealing groove; and the device is characterized in that: The door shaft is a double shaft; a rotating disk is provided on the door, which drives a latch provided on the door side by controlling a hydraulic transmission device or a mechanical transmission device, and the latch interacts with a pin groove provided on the door frame to achieve the closing and opening of the door; The structure of the double rotating shaft is as follows: two shafts are placed in their respective shaft sleeves, and the two shaft sleeves are fixed together by welding; a pair of frame plates are placed on the upper and lower shafts of the shaft sleeves respectively and can rotate around the shafts; two pairs of frame plates, one pair is fixed to the door frame, and the other pair is fixed to the door; The door comprises a left door and a right door; the left door and the right door are respectively connected to the door frame via door shafts, and a rotating disk is provided inside the left door and the right door; a small door is provided on the left door or the right door, and a rotating disk is provided inside and outside the small door; latches are provided on the sides of the left door and the right door, and the latches are engaged with pin holes provided on the frame; A butt sealing groove is provided at the junction of the left door and the right door, and the two butt sealing grooves are opposite to each other and have a built-in sealing strip; a groove is provided in the middle of the lower frame of the left door and the right door, and the groove is provided with a groove tongue, and the height of the groove tongue is 1 / 3 to 2 / 3 of the groove depth.

2. A sealing locking device for a sealed door according to claim 1, characterized in that: The hydraulic transmission device refers to: its switch and sealing are realized by an oil pump; the guide switch is used to control the oil supply, stop and oil return of the oil circuit; by rotating the rotating disk, the oil cylinder is extended and retracted, and the oil cylinder pushes and pulls the pin push-pull rod to insert or pull out the pin hole to realize the opening and closing of the door, and when the door is closed, it is tightened and sealed with the door frame.

3. The sealing locking device for a sealed door according to claim 1, characterized in that: The mechanical transmission device refers to a device in which the opening and closing and sealing are realized by gears, racks and latch push-pull rods: rotating the rotating disk rotates the gears or racks, driving the latch push-pull rods to insert or pull the latch into or out of the pin hole, thereby realizing the opening and closing of the door; and when the door is closed, it is tightened and sealed with the door frame.

4. The sealing locking device for a sealed door according to claim 1, characterized in that: The mechanical transmission device refers to: a door-shaped bracket with the lower end fixed on the door, the central axis movably placed on the bracket, and a rotating disk provided on the upper end; a circular disc is fixed on the central axis, a central gear is provided on the central axis below the circular disc, and two gear shafts symmetrical relative to the center of the circle are provided on the circular disc, and gears are provided on the gear shafts, and the gears mesh with the central gear inwardly and with the outer gear ring outwardly; one or more shafts are provided near the edge of the circular disc, and if two shafts are provided, they are symmetrical relative to the center of the circle, and a toggle rod is connected to the shaft, and the other end of the toggle rod is movably connected to one end of the rotating rod, and the rotating rod uses the middle part as the axis, and one end or both ends of the rotating rod are movably connected to a latch push-pull rod, and the outer end of the latch push-pull rod is connected to the latch.

5. A sealing locking device for a sealed door according to claim 1, 2, 3 or 4, characterized in that: The structure of the latch is as follows: the latch seat is fixed to the door, and four plate rods are provided on the latch seat, which are connected end to end by shafts, one of which is provided on the latch seat, and one of the plate rods is a latch; an active rod is movably connected to a shaft that is not connected to the latch, and the active rod is driven by the latch push-pull rod, so that the square connection structure of the plate rods can drive the latch to rotationally extend or retract; a pin hole corresponding to the latch is provided on the door frame.

6. A sealing locking device for a sealed door according to claim 1, 2, 3 or 4, characterized in that: The structure of the latch is as follows: the latch is in the shape of a rectangular plate, movably connected to the door via a shaft, and the end is movably connected to the active rod via a shaft. A corresponding pin hole is provided on the door frame, and the pin hole is trapezoidal, tilted toward the inside of the door, with a larger top and a smaller bottom, or a smaller top and a larger bottom. When closing the door, the active rod pushes the latch to rotate in the pin hole. Since the pin hole is tilted toward the inside of the door, the door is pressed against the door frame.

7. The sealing locking device for a sealed door according to claim 4, characterized in that: The structure of the latch push-pull rod is that two ends of the screw rod are provided with nuts and sleeve rods.

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