Linkage control device for door closer of normally open fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a normally-open fireproof door closer linkage control device which comprises a door closer body, a first-level arm is installed on the upper surface of the door closer body, a second-level arm is rotationally connected to the upper surface of the first-level arm, and a connecting block is rotationally connected to the surface of the second-level arm. The door closer comprises a door closer body, a positioning device is arranged on the upper surface of the door closer body and comprises a U-shaped plate, the U-shaped plate is fixedly connected to the upper surface of the door closer body, the inner wall of the U-shaped plate is slidably connected with an L-shaped plate, the surface of the L-shaped plate is sleeved with a sleeve plate, the side face of the U-shaped plate is fixedly connected with a limiting block, and the limiting block is fixedly connected with the door closer body. The side, close to the limiting block, of the L-shaped plate is fixedly connected with a bent plate. According to the door closer, the problem that when the door closer main body is installed, due to the fact that it is difficult to guarantee that the door closer main body is horizontally installed, precision is poor when a fireproof door is closed through the door closer main body is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fireproof door technical field especially relates to the linkage control device of the normally open fireproof door door closer. BACKGROUND

[0002] The normally open fireproof door is a kind of fireproof door that keeps open state for a long time in normal state, can improve the traffic efficiency and convenience of building, and can avoid the damage of fireproof door caused by frequent opening and closing as far as possible, when installing the normally open fireproof door, linkage control device of door closer is needed to ensure that automatic closing of fireproof door can be realized when fire occurs, and fire safety is guaranteed.

[0003] One kind of normally open fireproof door door closer is disclosed in a Chinese patent with publication number CN221032102U, and its technical solution points are: including box body, end cover, mounting bracket, primary arm and secondary arm, the one end of the secondary arm is fixedly connected with gear roller, the shaft portion both ends of the gear roller are rotatably connected with the cover, the shaft portion upper end of the gear roller is sleeved with the spring of different ends, the utility model discloses when encountering fire, the fire door release device loosens the limit, at this time, the first spring is pushed to the tooth column due to the elastic force generated by compression, so as to mesh gear roller rotation, in turn drive secondary arm to primary arm close, in addition, the torque generated by torsion of the spring of different ends acts on secondary arm through second side groove, two forces act on secondary arm simultaneously, ensure the tightness of normally open fireproof door, avoid the problem that the first spring is insufficient due to long-term compression when fire occurs, and the normally open fireproof door cannot be closed tightly.

[0004] The existing related technology often has the following defects: the normally open fireproof door door closer linkage control device in the prior art needs to connect the door closer main body to the fireproof door, when installing the door closer main body, it is difficult to ensure that the door closer main body is installed horizontally, so that the precision when using the door closer main body to close the fireproof door is poor.

[0005] Therefore, the utility model provides normally open fireproof door door closer linkage control device. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the poor precision when using the door closer main body to close the fireproof door in the prior art due to the difficulty in ensuring that the door closer main body is installed horizontally, and provides the normally open fireproof door door closer linkage control device.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme: the linkage control device of the normally open fireproof door door closer, including the door closer main part, the upper surface of the door closer main part is installed with the first arm, the upper surface of the first arm is rotatably connected with the second arm, the surface of the second arm is rotatably connected with the connecting block, the upper surface of the door closer main part is equipped with the positioning device, the positioning device includes'U'type board,'U'type board fixedly connected on the upper surface of the door closer main part, the inner wall of'U'type board is slidably connected with'L'type board, the surface of'L'type board is covered with the cover plate.

[0008] The effect of the above components is that by setting the 'U' type board, the 'L' type board and the cover plate, the positioning and limiting effect can be achieved when the door closer main part is installed on the fireproof door.

[0009] Preferably, the side surface of the 'U' type board is fixedly connected with the limiting block, and the side, close to the limiting block, of the 'L' type board is fixedly connected with the bent plate.

[0010] The effect of the above components is that by setting the limiting block and the bent plate, the position of the 'L' type board can be limited when the 'L' type board is connected to the 'U' type board.

[0011] Preferably, the lower surface of the cover plate is fixedly connected with the abutting plate, the side, away from the door closer main part, of the 'L' type board is fixedly connected with two first springs, and the other ends of the two first springs are fixedly connected with the cover plate.

[0012] The effect of the above components is that by setting the abutting plate and the first spring, the position of the cover plate can be limited, and by setting the first spring, the stable connection between the cover plate and the 'L' type board can be ensured.

[0013] Preferably, the inner wall of the bent plate is slidably connected with the limiting rod, the limiting rod is slidably connected with the inner wall of the limiting block, and the end, away from the limiting block, of the limiting rod is fixedly connected with the pulling plate.

[0014] The effect of the above components is that by setting the limiting rod, the position of the bent plate can be limited, and by setting the pulling plate, the position of the limiting rod can be moved conveniently.

[0015] Preferably, the surface of the limiting rod is sleeved with the second spring, and the two ends of the second spring are fixedly connected with the bent plate and the pulling plate respectively.

[0016] The effect of the above components is that by setting the pulling plate, the second spring can be installed, and by setting the second spring, the position of the limiting rod can be limited.

[0017] Preferably, a stabilizing device is provided on the side of the door closer body, and the stabilizing device includes a curved plate, the curved plate is fixedly connected to the side of the door closer body, a rotating rod is fixedly connected to the side of the curved plate, a fixing plate is installed at the end of the rotating rod away from the curved plate, a sliding groove is provided on the side of the fixing plate close to the rotating rod, a slider is slidably connected to the surface of the sliding groove on the fixing plate, an arc block is fixedly connected to the side of the slider close to the rotating rod, and the side of the arc block away from the rotating rod is arc-shaped.

[0018] The effect achieved by the above components is that the fixed plate is fixedly connected to the door frame, so that by arranging the arc plate, rotating rod, fixed plate, slider and arc block, the fire door can be further locked after the door closer body is started to close the fire door.

[0019] Preferably, the inner wall of the slider is slidably connected to a sliding rod, the sliding rod is fixedly connected to the surface of the sliding groove on the fixed plate, the surface of the sliding rod is sleeved with a third spring, and the two ends of the third spring are respectively fixedly connected to the slider and the fixed plate.

[0020] The effects achieved by the above components are: by arranging the slide bar, the position of the third spring can be restricted; by arranging the third spring, the position of the slider can be restricted.

[0021] In summary:

[0022] 1. In the present invention, by providing a positioning device, the door closer body can be positioned by the sleeve plate, the "L"-shaped plate and the "U"-shaped plate during the process of installing the door closer body on the fire door, thereby ensuring that the door closer body is installed horizontally as much as possible and ensuring the accuracy of closing the fire door using the door closer body as much as possible.

[0023] 2. In the present invention, by providing a stabilizing device, the fire door can be further locked by the curved plate, rotating rod, fixed plate and curved block while the fire door is closed using the door closer linkage control device, thereby ensuring the closing effect of the fire door as much as possible and improving the fire protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 2 For this utility model Figure 1 A magnified view of point A;

[0026] Figure 3 This is a schematic structural diagram of the "L"-shaped plate of the utility model;

[0027] Figure 4 For this utility model Figure 1 Schematic diagram of the local structure;

[0028] Figure 5 For the utility model Figure 4 The enlarged view of B.

[0029] Legend: 1, door closer main body; 2, primary arm; 3, secondary arm; 4, connecting block; 5, positioning device; 501, "U" plate; 502, "L" plate; 503, sleeve plate; 504, stop plate; 505, bent plate; 506, limiting block; 507, first spring; 508, limiting rod; 509, pull plate; 510, second spring; 6, stabilizing device; 61, arc plate; 62, rotating rod; 63, fixed plate; 64, arc block; 65, sliding block; 66, sliding rod; 67, third spring. DETAILED DESCRIPTION

[0030] Referring to Figure 1 The utility model provides a technical scheme: the linkage control device of normally open fireproof door door closer, including the door closer main body 1, the upper surface of the door closer main body 1 is installed primary arm 2, the upper surface of primary arm 2 is rotatably connected with secondary arm 3, the surface of secondary arm 3 is rotatably connected with connecting block 4, the upper surface of the door closer main body 1 is equipped with positioning device 5, and the side of the door closer main body 1 is equipped with stabilizing device 6.

[0031] The specific setting and role of its positioning device 5 and stabilizing device 6 will be described below.

[0032] Referring to Figure 1 And Figure 2 And Figure 3 In the embodiment, the positioning device 5 includes "U" plate 501, the "U" plate 501 is fixedly connected to the upper surface of the door closer main body 1, the inner wall of the "U" plate 501 is slidably connected with "L" plate 502, and the surface of the "L" plate 502 is sleeved with sleeve plate 503. By setting "U" plate 501, "L" plate 502 and sleeve plate 503, the positioning and limiting effect can be achieved when the door closer main body 1 is installed on the fireproof door. The side surface of the "U" plate 501 is fixedly connected with the limiting block 506, and the side of the "L" plate 502 close to the limiting block 506 is fixedly connected with the bent plate 505. By setting the limiting block 506 and the bent plate 505, the position of the "L" plate 502 can be limited when the "L" plate 502 is connected to the "U" plate 501. The lower surface of the sleeve plate 503 is fixedly connected with the stop plate 504, one side of the "L" plate 502 away from the door closer main body 1 is fixedly connected with two first springs 507, and the other ends of the two first springs 507 are fixedly connected with the sleeve plate 503. By setting the stop plate 504 and the first spring 507, the position of the sleeve plate 503 can be limited, and by setting the first spring 507, the stable connection between the sleeve plate 503 and the "L" plate 502 can be ensured.

[0033] The inner wall of the bending plate 505 is slidingly connected with a limiting rod 508, the limiting rod 508 is slidingly connected with the inner wall of the limiting block 506, and the end, away from the limiting block 506, of the limiting rod 508 is fixedly connected with a pulling plate 509. By arranging the limiting rod 508, the position of the bending plate 505 can be limited, and by arranging the pulling plate 509, the position of the limiting rod 508 can be conveniently moved. The surface of the limiting rod 508 is sleeved with a second spring 510, and the two ends of the second spring 510 are fixedly connected with the bending plate 505 and the pulling plate 509, respectively. By arranging the pulling plate 509, the second spring 510 can be installed, and by arranging the second spring 510, the position of the limiting rod 508 can be limited.

[0034] Referring to Figure 1 and Figure 4 and Figure 5 As shown in the specific description, the stabilizing device 6 comprises an arc-shaped plate 61, the arc-shaped plate 61 is fixedly connected with the side of the door closer main body 1, the side of the arc-shaped plate 61 is fixedly connected with a rotating rod 62, the end, away from the arc-shaped plate 61, of the rotating rod 62 is installed with a fixed plate 63, the side, close to the rotating rod 62, of the fixed plate 63 is provided with a sliding groove, the surface of the sliding groove of the fixed plate 63 is slidingly connected with a sliding block 65, the side, close to the rotating rod 62, of the sliding block 65 is fixedly connected with an arc-shaped block 64, and the side, away from the rotating rod 62, of the arc-shaped block 64 is arc-shaped. The fixed plate 63 is fixedly connected with the door frame, so that by arranging the arc-shaped plate 61, the rotating rod 62, the fixed plate 63, the sliding block 65 and the arc-shaped block 64, the fireproof door can be further locked after the door closer main body 1 is started to close the fireproof door.

[0035] The inner wall of the sliding block 65 is slidingly connected with a sliding rod 66, the sliding rod 66 is fixedly connected with the surface of the sliding groove of the fixed plate 63, the surface of the sliding rod 66 is sleeved with a third spring 67, and the two ends of the third spring 67 are fixedly connected with the sliding block 65 and the fixed plate 63, respectively. By arranging the sliding rod 66, the position of the third spring 67 can be limited, and by arranging the third spring 67, the position of the sliding block 65 can be limited.

[0036] The working principle is that when the door closer linkage control device controls the closing of the fireproof door, the door closer main body 1 pulls the fireproof door to rotate close to the connecting block 4 through the rotation of the first arm 2 and the second arm 3, so as to close the fireproof door. When installing the door closer main body 1, first pull the cover plate 503 to slide on the surface of the "L" plate 502, so that the abutment plate 504 moves away from the "L" plate 502, pull the pull plate 509 to drive the limiting rod 508 to slide on the inner wall of the bent plate 505, so that the pull plate 509 moves away from the bent plate 505, and then move the "L" plate 502 close to the "U" plate 501. At this time, the cover plate 503 is close to the fireproof door, and the pull plate 509 is loosened. Under the action of the second spring 510, the limiting rod 508 moves close to the limiting block 506, completing the installation of the "L" plate 502. Loosen the cover plate 503, and under the action of the first spring 507, the abutment plate 504 moves close to the fireproof door, so that the abutment plate 504, the cover plate 503 and the "L" plate 502 are fixed on the fireproof door, completing the positioning of the door closer main body 1. Then fix the door closer main body 1 to the fireproof door, pull the pull plate 509 to drive the limiting rod 508 to move away from the limiting block 506, and release the limitation of the position of the "L" plate 502. Then pull the cover plate 503 to make the abutment plate 504 away from the fireproof door, and then move the "L" rod away from the fireproof door. By setting the positioning device 5, the door closer main body 1 can be positioned by the cover plate 503, the "L" plate 502 and the "U" plate 501 during installation on the fireproof door, so as to ensure the horizontal installation of the door closer main body 1 as much as possible, and the closing precision of the fireproof door by the door closer main body 1 is ensured as much as possible.

[0037] In the process of using the door closer linkage control device to close the fireproof door, the rotation of the fireproof door makes the arc plate 61 drive the rotating rod 62 to rotate close to the arc block 64. In the process of rotating the rotating rod 62, the arc block 64 drives the sliding block 65 to slide on the surface of the sliding rod 66, so that the arc block 64 moves close to the connecting block 4. When the rotating rod 62 rotates close to the fixed plate 63, under the action of the third spring 67, the arc block 64 moves close to the rotating rod 62 to limit the position of the rotating rod 62, so as to lock the fireproof door. By setting the stabilizing device 6, the fireproof door can be further locked by the arc plate 61, the rotating rod 62, and the fixed plate 63 and the arc block 64 when the door closer linkage control device is used to close the fireproof door, so as to ensure the closing effect of the fireproof door as much as possible and improve the fire performance.

[0038] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

Claims

1. A normally open fire door closer linkage control device, comprising a door closer body (1), a primary arm (2) mounted on the upper surface of the door closer body (1), a secondary arm (3) rotatably connected to the upper surface of the primary arm (2), a connecting block (4) rotatably connected to the surface of the secondary arm (3), a positioning device (5) provided on the upper surface of the door closer body (1), characterized in that: The positioning device (5) comprises a U-shaped plate (501), wherein the U-shaped plate (501) is fixedly connected to the upper surface of the door closer body (1), an L-shaped plate (502) is slidably connected to the inner wall of the U-shaped plate (501), and a sleeve plate (503) is sleeved on the surface of the L-shaped plate (502).

2. The normally open fire door closer linkage control device according to claim 1, characterized in that: The side of the "U"-shaped plate (501) is fixedly connected to a limiting block (506), and the side of the "L"-shaped plate (502) close to the limiting block (506) is fixedly connected to a bent plate (505).

3. The normally open fire door closer linkage control device according to claim 1, characterized in that: The lower surface of the sleeve plate (503) is fixedly connected to a stop plate (504), and the side of the "L"-shaped plate (502) away from the door closer body (1) is fixedly connected to two first springs (507), and the other ends of the two first springs (507) are fixedly connected to the sleeve plate (503).

4. The normally open fire door closer linkage control device according to claim 2, characterized in that: The inner wall of the bent plate (505) is slidably connected to a limiting rod (508), and the limiting rod (508) is slidably connected to the inner wall of the limiting block (506). One end of the limiting rod (508) away from the limiting block (506) is fixedly connected to a pulling plate (509).

5. The normally open fire door closer linkage control device according to claim 4, characterized in that: A second spring (510) is sleeved on the surface of the limiting rod (508), and two ends of the second spring (510) are fixedly connected to the bent plate (505) and the pulling plate (509) respectively.

6. The normally open fire door closer linkage control device according to claim 1, characterized in that: The side of the door closer body (1) is provided with a stabilizing device (6), and the stabilizing device (6) comprises an arc-shaped plate (61), the arc-shaped plate (61) is fixedly connected to the side of the door closer body (1), the side of the arc-shaped plate (61) is fixedly connected to a rotating rod (62), and a fixing plate (63) is installed at one end of the rotating rod (62) away from the arc-shaped plate (61), and a sliding groove is provided on the side of the fixing plate (63) close to the rotating rod (62), and a slider (65) is slidably connected to the surface of the sliding groove on the fixing plate (63), and the side of the slider (65) close to the rotating rod (62) is fixedly connected to an arc-shaped block (64), and the side of the arc-shaped block (64) away from the rotating rod (62) is arc-shaped.

7. The normally open fire door closer linkage control device according to claim 6, characterized in that: The inner wall of the slider (65) is slidably connected to a slide rod (66), and the slide rod (66) is fixedly connected to the surface of the slide groove on the fixed plate (63). The surface of the slide rod (66) is covered with a third spring (67), and the two ends of the third spring (67) are fixedly connected to the slider (65) and the fixed plate (63) respectively.

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