A primary-secondary door with inside-outside double opening function

Abstract

The present application belongs to the technical field of security doors, and particularly relates to a primary and secondary door with inside-outside double opening function, which comprises a door frame and two door panels installed in the door frame, a first fixing seat is installed at the upper end of the door panel, a second fixing seat corresponding to the vertical direction of the first fixing seat is installed at the upper end of the door frame, a lock slot is arranged in the first fixing seat, a limiting slot and a lock tongue installed in the limiting slot are arranged in the second fixing seat, the lower end of the lock tongue extends into the lock slot, an extension slot is arranged in the second fixing seat, an extension frame is installed in the extension slot, a roller is connected to the lower end of the extension frame and the lower end of the roller extends to the lower side of the second fixing seat, a circular arc slot matched with the roller is arranged on the first fixing seat, in the process of closing the door panel, the roller is lifted according to the door panel, the roller falls into the circular arc slot, the lock tongue can provide locking function in two directions of inside and outside of the door panel, and will not affect the automatic closing action of the door panel, and the space near the door panel can be more reasonably utilized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of security doors, and particularly relates to a mother-son door with inside-outside double opening function. BACKGROUND

[0002] The mother-son door is composed of a mother door plate with a larger width and a son door plate with a smaller width, and can meet the needs of daily personnel access and the passing of bulky objects.

[0003] In the prior art, the common mother-son door only has inside opening or outside opening function without inside-outside double opening function in order not to affect the security function and maintain the convenience of opening and closing the door plate, and since the opening range of the mother-son door plate is larger than that of the single door plate, a larger space without any obstruction is required in the opening direction of the door plate.

[0004] The present application designs a mother-son door with inside-outside double opening function to solve the above problems. SUMMARY

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] The mother-son door with inside-outside double opening function comprises a door frame and two door plates installed in the door frame and distributed left and right, the back end faces of the two door plates are connected with the side faces of the door frame through double hinges respectively, handles are installed on the front and rear ends of the door plates, a lock cylinder capable of being used in cooperation with the other door plate is installed on one of the door plates, a first fixing seat is installed on the upper end of the door plate, a second fixing seat corresponding to the vertical direction of the first fixing seat is installed on the upper end of the door frame, a lock slot is arranged in the first fixing seat, a limiting slot and a lock tongue installed in the limiting slot are arranged in the second fixing seat, the lower end of the lock tongue extends into the lock slot, an extension slot and an extension mechanism installed in the extension slot and connected with the lock tongue are arranged in the second fixing seat, a cam mechanism capable of ejecting the lock tongue out of the lock slot and connected with the handle is installed in the door plate,

[0007] The extension mechanism comprises an extension frame installed in the extension slot, a limiting plate is installed on the upper end of the extension frame, a roller is connected with the lower end of the extension frame and the lower end of the roller extends to the lower side of the second fixing seat, a connecting rod is arranged between the extension frame and the lock tongue, and a circular arc slot matched with the roller is arranged on the first fixing seat.

[0008] As a preferred scheme, a gear connected with the roller is installed on the outer end of the extension frame, moving frames are arranged at the front and rear ends of the second fixing seat respectively, a rack is installed in each moving frame, the two racks are located on the front and rear sides of the gear respectively, a limiting frame is arranged on the moving frame and a tension spring is arranged between the limiting frame and the inner wall of the extension frame, and a boss assembly capable of moving the moving frame along the front and rear directions by approaching the door plate and pushing the moving frame is installed in the first fixing seat.

[0009] As a preferred scheme, the first fixing base is provided with a straight slot, the boss assembly comprises a straight plate installed in the straight slot, the straight plate is provided with a spherical boss at the upper end, the boss extends to the upper side of the first fixing base, and a compression spring is arranged between the lower end of the straight plate and the inner wall of the straight slot.

[0010] As a preferred scheme, the circular arc slot, the straight slot and the lock slot are sequentially distributed on the first fixing base from far to near in the direction close to the handle.

[0011] As a preferred scheme, the door plate is provided with a cam slot, the cam mechanism comprises a cam installed in the cam slot, the cam is connected with a transmission rod inside, the transmission rod is connected with the front handle and the rear handle at two ends respectively, a push rod is installed in the door plate, the push rod is provided with a round corner at the lower end and abuts against the outer wall of the cam, a push plate is installed at the bottom of the lock slot, and the upper end of the push rod extends into the lock slot and abuts against the lower end of the push plate.

[0012] As a preferred scheme, a first sealing strip is arranged between the side surface of the door plate and the side surface of the door frame, and the first sealing strip is distributed at the central position of the side surface of the door plate.

[0013] As a preferred scheme, the opposite end surfaces of one door plate and the other door plate are provided with two second sealing strips, and the two second sealing strips are distributed at positions close to the front end and the rear end of the door plate respectively.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The lock tongue, the telescopic frame and the roller are designed, in the process of closing the door plate, according to the action that the roller is lifted by the door plate and then falls into the circular arc slot, the function that the lock tongue is automatically lifted and lowered without rotating the handle is realized, the retraction action of the lock tongue is no longer realized by the door plate pushing and extruding the lock tongue, therefore, the lock tongue can provide the locking function in the two directions of inside and outside of the door plate in the case that the door plate can be opened inside and outside, and the automatic closing action of the door plate is not affected, the space near the door plate can be more reasonably utilized according to the characteristics that the door plate is opened inside and outside.

[0016] 2. The telescopic frame and the boss are designed, in the process of closing the door plate, the gear and the gear wheel are engaged, the action that the telescopic frame moves upward is limited by the rotating speed of the roller, under the action of the friction force, the moving speed of the telescopic frame is slowed down, and the function that the door plate is slowed down and buffered is realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the present application.

[0018] Figure 2 is a schematic view of the door plate of the present application.

[0019] Figure 3is a schematic view of the door frame of the present application.

[0020] Figure 4 is a schematic view of the connection relationship between the door panel and the door frame of the present application.

[0021] Figure 5 is a schematic view of the A perspective of the present application. Figure 4

[0022] Figure 6 is a plan view of the A perspective of the present application. Figure 4

[0023] Figure 7 is a schematic view of the B perspective of the present application. Figure 4

[0024] Figure label name: 1, door frame; 2, door panel; 3, two-way hinge; 4, lock core; 5, first fixed seat; 6, second fixed seat; 7, lock slot; 8, limiting slot; 9, lock tongue; 10, telescopic slot; 11, handle; 12, telescopic frame; 13, limiting plate; 14, roller; 15, connecting rod; 16, gear; 17, moving frame; 18, rack; 19, limiting frame; 20, tension spring; 21, straight slot; 22, straight plate; 23, boss; 24, compression spring; 25, groove; 26, circular arc slot; 27, cam slot; 28, transmission rod; 29, push rod; 30, push plate; 31, cam. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples or drawings are used to illustrate the present application, but are not used to limit the scope of the present application.

[0026] A child-mother door with double opening function, as shown in Figures 1 to 5 , comprises a door frame 1 and two door panels 2 installed in the door frame 1 and distributed left and right, the door panels 2 can be two child-mother door panels with different widths, the back end faces of the two door panels 2 are connected to the side faces of the door frame 1 through two-way hinges 3 respectively, the front and rear ends of the door panels 2 are both installed with handles 11, one of the door panels 2 is installed with a lock core 4 capable of being used in cooperation with the other door panel 2, the upper end of the door panel 2 is installed with a first fixed seat 5, the upper end of the door frame 1 is installed with a second fixed seat 6 corresponding to the vertical direction of the first fixed seat 5, the first fixed seat 5 is provided with a lock slot 7 inside, the second fixed seat 6 is provided with a limiting slot 8 and a lock tongue 9 installed in the limiting slot 8 inside, the lower end of the lock tongue 9 extends into the lock slot 7, the second fixed seat 6 is provided with a telescopic slot 10 and a telescopic mechanism installed in the telescopic slot 10 and connected with the lock tongue 9, the door panel 2 is installed with a cam mechanism capable of ejecting the lock tongue 9 out of the lock slot 7 and connected with the handle 11;

[0027] ​​​The telescopic mechanism comprises a telescopic frame 12 installed in the telescopic groove 10, a limiting plate 13 installed at the upper end of the telescopic frame 12, a roller 14 connected to the lower end of the telescopic frame 12 and extending to the lower side of the second fixed base 6, a connecting rod 15 arranged between the telescopic frame 12 and the locking tongue 9, and a circular arc groove 26 arranged on the first fixed base 5 and matched with the roller 14.

[0028] When the door plate 2 is opened, the locking tongue 9 is pushed out of the locking groove 7 by rotating the handle 11 and the cam mechanism connected with the handle 11, so that the door plate 2 can be rotated relative to the door frame 1. When the door plate 2 is closed, the door plate 2 first contacts the roller 14, and the door plate 2 pushes the roller 14 and the telescopic frame 12 to retract into the second fixed base 6. Before the door plate 2 moves to the position close to the locking tongue 9, the locking tongue 9 has been retracted into the second fixed base 6 with the telescopic frame 12. When the door plate 2 moves to the closed position, the circular arc groove 26 is located directly below the roller 14, and the roller 14 falls into the circular arc groove 26 on the door plate 2. Then the locking tongue 9 also falls into the locking groove 7 on the door plate 2, so that the automatic locking function between the door plate 2 and the door frame 1 is realized.

[0029] As shown in Figure 5 and Figure 6 , the telescopic frame 12 is provided with a gear 16 connected with the roller 14 at the outer end thereof, the second fixed base 6 is provided with a moving frame 17 at the front and rear ends thereof, the moving frame 17 is provided with a rack 18 installed therein, the two racks 18 are respectively located at the front and rear sides of the gear 16, the moving frame 17 is provided with a limiting frame 19, and a tension spring 20 is arranged between the limiting frame 19 and the inner wall of the telescopic frame 12. The first fixed base 5 is provided with a boss assembly capable of moving the moving frame 17 along the front and rear directions when the door plate 2 approaches and pushes the moving frame 17.

[0030] The first fixed base 5 is provided with a straight groove 21, and the boss assembly comprises a straight plate 22 installed in the straight groove 21, a spherical boss 23 arranged at the upper end of the straight plate 22, the upper end of the boss 23 extending to the upper side of the first fixed base 5, a compression spring 24 arranged between the lower end of the straight plate 22 and the inner wall of the straight groove 21, and a recess 25 arranged at the lower end of the second fixed base 6 and located at the outer side direction of the moving frame 17.

[0031] As shown in Figure 2 and Figure 5 , the circular arc groove 26, the straight groove 21 and the locking groove 7 are sequentially distributed on the first fixed base 5 from far to near in the direction close to the handle 11. Therefore, during the movement of the opened door plate 2 to the position directly below the door frame 1, the door plate 2 first contacts the roller 14, the boss 23 on the door plate 2 then contacts the door frame 1, and finally the door plate 2 approaches the locking tongue 9.

[0032] The roller 14 first contacts the door panel 2 and is pushed upward by the door panel 2. After the roller 14, the telescopic frame 12 and the latch 9 rise a certain distance, the boss 23 on the door panel 2 moves into the groove 25 and pushes the moving frame 17 to move. The rack 18 on the moving frame 17 meshes with the gear 16. The upward movement of the telescopic frame 12 is limited by the rotation speed of the roller 14. Under the action of friction, the upward speed of the telescopic frame 12 is reduced, achieving the function of deceleration and buffering of the door panel 2.

[0033] Furthermore, after the door panel 2 moves directly below the door frame 1, the roller 14 falls into the arc groove 26, the boss 23 exceeds the limit distance of the moving frame 17 and separates from the moving frame 17, the moving frame 17 retracts, the rack 18 separates from the gear 16, if the handle 11 is always in the rotated state, the latch 9 will no longer fall into the lock groove 7, and the door panel 2 can be directly pushed to open in the other direction.

[0034] When the roller 14 falls into the arc groove 26 and the rack 18 separates from the gear 16, the resistance to pushing the door panel 2 changes significantly, making it easier to determine whether the door panel 2 has reached the locking position directly below the door frame 1.

[0035] like Figure 7 As shown, a cam groove 27 is provided on the door panel 2. The cam mechanism includes a cam 31 installed in the cam groove 27. A transmission rod 28 is connected in the cam 31 and the two ends of the transmission rod 28 are respectively connected to the front and rear handles 11. A push rod 29 is installed in the door panel 2. The lower end of the push rod 29 is rounded and abuts against the outer wall of the cam 31. A push plate 30 is installed at the bottom of the lock groove 7. The upper end of the push rod 29 extends into the lock groove 7 and abuts against the lower end of the push plate 30.

[0036] like Figure 1 As shown, a first sealing strip is provided between the side of the door panel 2 and the side of the door frame 1. The first sealing strip is located at the center of the side of the door panel 2. The position of the first sealing strip will not obstruct the inward and outward opening of the door panel 2. Two second sealing strips are provided on the opposite end faces of one door panel 2 and the other door panel 2. If the door panel 2 consists of two door panels with different widths, the second sealing strip is installed on the door panel with the smaller width. The two second sealing strips are respectively located near the front and rear ends of the door panel 2.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A double-leaf door with internal and external opening functions, comprising a door frame (1) and two door panels (2) installed inside the door frame (1) and distributed on the left and right, the back ends of the two door panels (2) being connected to the side of the door frame (1) by two-way hinges (3), handles (11) being installed at both the front and rear ends of the door panels (2), and a lock cylinder (4) capable of cooperating with the other door panel (2) being installed on one of the door panels (2), characterized in that: The first fixed seat (5) is arranged on the upper end of the door plate (2), the second fixed seat (6) corresponding to the vertical direction of the first fixed seat (5) is arranged on the upper end of the door frame (1), the lock slot (7) is arranged in the first fixed seat (5), the limiting slot (8) and the lock tongue (9) arranged in the limiting slot (8) are arranged in the second fixed seat (6), the lower end of the lock tongue (9) extends into the lock slot (7), the telescopic slot (10) and the telescopic mechanism arranged in the telescopic slot (10) and connected with the lock tongue (9) are arranged in the second fixed seat (6), the cam mechanism capable of ejecting the lock tongue (9) out of the lock slot (7) and connected with the handle (11) is arranged in the door plate (2), The telescopic mechanism comprises the telescopic frame (12) arranged in the telescopic slot (10), the limiting plate (13) is arranged on the upper end of the telescopic frame (12), the roller (14) is connected with the lower end of the telescopic frame (12) and the lower end of the roller (14) extends to the lower side of the second fixed seat (6), the connecting rod (15) is arranged between the telescopic frame (12) and the lock tongue (9), and the circular arc slot (26) matched with the roller (14) is arranged on the first fixed seat (5). The gear (16) connected with the roller (14) is arranged on the outer end of the telescopic frame (12), the moving frame (17) is arranged at the front and rear ends of the second fixed seat (6), the rack (18) is arranged in the moving frame (17), the two racks (18) are arranged on the front and rear sides of the gear (16), the limiting frame (19) is arranged on the moving frame (17) and the tension spring (20) is arranged between the limiting frame (19) and the inner wall of the telescopic frame (12), and the boss assembly capable of moving the moving frame (17) in the front and rear directions by approaching the door plate (2) is arranged in the first fixed seat (5). The straight slot (21) is arranged on the first fixed seat (5), the straight plate (22) arranged in the straight slot (21) comprises the spherical boss (23) arranged on the upper end of the straight plate (22), the upper end of the boss (23) extends to the upper side of the first fixed seat (5), the compression spring (24) is arranged between the lower end of the straight plate (22) and the inner wall of the straight slot (21), and the recess (25) arranged on the lower end of the second fixed seat (6) is located on the outer side of the moving frame (17).

2. The mother-daughter door with inside-outside dual opening function according to claim 1, characterized in that: The circular arc slot (26), the straight slot (21) and the lock slot (7) are sequentially arranged on the first fixed seat (5) from far to near and distributed in the direction close to the handle (11).

3. The mother-daughter door with inside-outside dual opening function according to claim 1, characterized in that: The cam slot (27) is arranged on the door plate (2), the cam mechanism comprises the cam (31) arranged in the cam slot (27), the transmission rod (28) is connected with the cam (31) and the two ends of the transmission rod (28) are connected with the front and rear handles (11), the push rod (29) is arranged in the door plate (2), the lower end of the push rod (29) is provided with a round corner and abuts against the outer wall of the cam (31), the push plate (30) is arranged at the bottom of the lock slot (7), the upper end of the push rod (29) extends into the lock slot (7) and abuts against the lower end of the push plate (30).

4. The parent-child door with double opening function according to claim 1, characterized in that: The first sealing strip is arranged between the side surface of the door plate (2) and the side surface of the door frame (1), and the first sealing strip is arranged at the central position of the side surface of the door plate (2).

5. The parent-child door with double opening function according to claim 1, characterized in that: One of the door panels (2) is provided with two second sealing strips on the opposite end surface of the other door panel (2), and the two second sealing strips are respectively distributed near the front and rear end surfaces of the door panel (2).

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