CN213807215U

CN213807215U - Fireproof door closer

Info

Publication number: CN213807215U
Application number: CN202022104811.XU
Authority: CN
Inventors: 黄增辉; 黄建胜
Original assignee: Quanzhou Shengfa Security Development Co Ltd
Current assignee: Quanzhou Shengfa Security Development Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-07-27
Anticipated expiration: 2030-09-23

Abstract

The utility model relates to a fireproof door closer, which comprises a door closer body, wherein an inner cavity of the door closer body is rotatably provided with a driving shaft, a fixed chute is arranged above the door closer body, the inner cavity of the fixed chute is provided with a movable sliding block, the bottom of the movable sliding block is fixedly provided with a connecting shaft, the connecting shaft is connected with the driving shaft through a driving arm, a baffle is fixedly arranged in the inner cavity of the fixed chute, a fixed sliding block is arranged on the right side of the baffle, a threaded rod is arranged on the left side of the inner cavity of the fixed chute, a stepping motor is fixedly arranged on the top of the fixed chute, the inner cavity of the fixed chute is rotatably provided with a rotating nut, an output shaft of the stepping motor is in transmission connection with the rotating nut, the threaded rod passes through the rotating nut and the baffle to be connected with the fixed sliding block, if a fire disaster happens, the stepping motor can be started in time, and the movable sliding block is pushed to the rightmost side through the threaded rod, guarantee to prevent that fire door is in the closed condition, increase its security of using.

Description

Fireproof door closer

Technical Field

The utility model relates to a prevent fire door closer belongs to door closer technical field.

Background

The fireproof door is a door which can meet the requirements of fire resistance stability, integrity of the fireproof door and heat insulation within a certain time; it is a fire-proof partition with certain fire resistance, which is arranged in fire-proof subareas, evacuation staircases, vertical shafts and the like; the fireproof door is used as a fireproof protection facility and plays an important role in accidents such as fire and the like, a door closer is arranged on the existing fireproof door, the door closer is a hydraulic press similar to a spring on the door head, the hydraulic press can be released after being compressed after the door is opened, the door is automatically closed, the spring door has the effect of a spring door, and the door can be accurately and timely closed to an initial position after being opened; however, when a fire occurs, if something prevents the fire door from being closed, the fire door cannot be closed in time, and because the fire door is in an open state, fire can rapidly spread to the surrounding through the fire door, so that the fire door has great harm to life and property of people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent fire door closer if when the conflagration breaing out, can in time start step motor, will remove the slider and push to rightmost side through the threaded rod, guarantee to prevent that fire door is in the closed condition, increase the security of its use to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent fire door closer, includes the door closer body, door closer body inner chamber rotates and is equipped with the drive shaft, door closer body top is equipped with fixed spout, fixed spout inner chamber is equipped with the movable sliding block, the fixed connecting axle that is equipped with in movable sliding block bottom, be connected through the actuating arm between connecting axle and the drive shaft, fixed spout inner chamber is fixed and is equipped with the baffle, the baffle right side is equipped with fixed slider, fixed spout inner chamber left side is equipped with the threaded rod, fixed spout top fixed mounting has step motor, fixed spout inner chamber rotates and is equipped with swivel nut, the step motor output shaft is connected with the swivel nut transmission, the threaded rod passes swivel nut, baffle and fixed slider is connected.

Further, fixed plates are fixedly arranged on the outer sides of the door closer body and the fixed sliding groove, and mounting holes are formed in the fixed plates.

Furthermore, one end of the driving arm is fixedly connected with the driving shaft, and the other end of the driving arm is rotatably connected with the connecting shaft.

Furthermore, a rectangular through hole used for moving the connecting shaft is formed in the bottom of the right side of the fixed sliding chute.

Furthermore, a driving gear ring is fixedly arranged on an output shaft of the stepping motor, a driven gear ring is arranged on the outer side of the rotating nut, and the driving gear ring is meshed with the driven gear ring.

Furthermore, the opposite surfaces of the movable sliding block and the fixed sliding block are fixedly provided with anti-collision rubber pads.

The utility model has the advantages that:

1. by arranging the door closer body and the fixed sliding chute, when the door closer is used, the door closer body is fixedly arranged on a fireproof door, the fixed sliding chute is fixedly arranged on a door frame, when the fireproof door is opened, the driving arm drives the movable sliding block to move, and when the fireproof door is closed, the movable sliding block is positioned at the rightmost side of the fixed sliding chute;

2. through setting up the threaded rod, if when the conflagration breaing out, can in time start step motor, it is rotatory to drive the swivel nut to make the threaded rod drive fixed slider and move right, can push the moving slide to rightmost side, guarantee to prevent that fire door is in the closed condition, increase the security of its use.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a top view of a fire door closer of the present invention;

fig. 2 is a schematic cross-sectional view of a fixed chute of the fire door closer of the present invention;

fig. 3 is a schematic view of a threaded rod driving mechanism of the fire door closer of the present invention;

reference numbers in the figures: 1. a door closer body; 2. a drive shaft; 3. fixing the chute; 4. moving the slide block; 5. a connecting shaft; 6. a drive arm; 7. a partition plate; 8. fixing the sliding block; 9. a threaded rod; 10. a stepping motor; 11. rotating the nut; 12. a fixing plate; 13. a rectangular through hole; 14. a driving gear ring; 15. a driven gear ring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a fireproof door closer comprises a door closer body 1, a driving shaft 2 is rotatably arranged in an inner cavity of the door closer body 1, a fixed chute 3 is arranged above the door closer body 1, a movable sliding block 4 is arranged in an inner cavity of the fixed chute 3, a connecting shaft 5 is fixedly arranged at the bottom of the movable sliding block 4, the connecting shaft 5 is connected with the driving shaft 2 through a driving arm 6, when the fireproof door closer is used, the door closer body 1 is fixedly arranged on a fireproof door, the fixed chute 3 is fixedly arranged on a door frame, when the fireproof door is opened, the driving arm 6 drives the movable sliding block 4 to move, when the fireproof door is closed, the movable sliding block 4 is positioned at the rightmost side of the fixed chute 3, a partition plate 7 is fixedly arranged in the inner cavity of the fixed chute 3, a fixed sliding block 8 is arranged at the right side of the partition plate 7, a threaded rod 9 is arranged at the left side of the inner cavity of the fixed chute 3, and a stepping motor 10 is fixedly arranged at the top of the

fixed chute

3, 3 inner chambers of fixed spout rotate and are equipped with swivel nut 11, step motor 10 output shaft is connected with swivel nut 11 transmission, threaded rod 9 passes swivel nut 11, baffle 7 and is connected with solid fixed sliding block 8, if when the conflagration breaing out, can in time start step motor 10, drives and rotates nut 11 rotatoryly to make threaded rod 9 drive solid fixed sliding block 8 and move right, can push away movable sliding block 4 and push to the rightmost side, guarantee to prevent that fire door is in the closed condition, increase its security of using.

Specifically, as shown in fig. 1, the outer sides of the door closer body 1 and the fixed chute 3 are both fixedly provided with a fixed plate 12, the fixed plate 12 is provided with a mounting hole, so that the door closer is conveniently and fixedly mounted on the fireproof door, one end of the driving arm 6 is fixedly connected with the driving shaft 2, and the other end of the driving arm is rotatably connected with the connecting shaft 5, so that the driving arm 6 can smoothly swing.

Specifically, as shown in fig. 2, a rectangular through hole 13 for moving the connecting shaft 5 is formed at the bottom of the right side of the fixed chute 3.

Specifically, as shown in fig. 3, the fixed driving gear ring 14 that is equipped with of step motor 10 output shaft, the swivel nut 11 outside is equipped with driven gear ring 15, driving gear ring 14 is connected with the meshing of driven gear ring 15, can drive swivel nut 11 rotatory to the realization lets the threaded rod move right, it all fixes being equipped with rubber cushion to remove slider 4 and fixed slider 8 opposite face, when removing slider 4 and opening the door and sliding, alleviates the impact force of bumping with fixed slider 8.

The utility model discloses the theory of operation: with door closer body 1 fixed mounting on preventing fire door, with fixed spout 3 fixed mounting on the door frame, when opening and preventing fire door, then actuating arm 6 drives and removes slider 4 and removes, when closing, it is located the rightmost side of fixed spout 3 to remove slider 4, if when the conflagration breaing out, can in time start step motor 10, it is rotatory to drive swivel nut 11, thereby make threaded rod 9 drive fixed slider 8 and remove, can push slider 4 to rightmost side, guarantee to prevent that fire door is in the closed condition, increase the security of its use.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a prevent fire door closer, includes door closer body (1), its characterized in that: door closer body (1) inner chamber rotates and is equipped with drive shaft (2), door closer body (1) top is equipped with fixed spout (3), fixed spout (3) inner chamber is equipped with movable sliding block (4), movable sliding block (4) bottom is fixed and is equipped with connecting axle (5), be connected through actuating arm (6) between connecting axle (5) and drive shaft (2), fixed spout (3) inner chamber is fixed and is equipped with baffle (7), baffle (7) right side is equipped with fixed sliding block (8), fixed spout (3) inner chamber left side is equipped with threaded rod (9), fixed spout (3) top fixed mounting has step motor (10), fixed spout (3) inner chamber rotates and is equipped with swivel nut (11), step motor (10) output shaft is connected with swivel nut (11) transmission, threaded rod (9) pass swivel nut (11), The partition plate (7) is connected with the fixed slide block (8).

2. The fire door closer of claim 1, wherein: the outer sides of the door closer body (1) and the fixed sliding groove (3) are fixedly provided with a fixed plate (12), and the fixed plate (12) is provided with a mounting hole.

3. The fire door closer of claim 1, wherein: one end of the driving arm (6) is fixedly connected with the driving shaft (2), and the other end of the driving arm is rotatably connected with the connecting shaft (5).

4. The fire door closer of claim 1, wherein: and a rectangular through hole (13) used for moving the connecting shaft (5) is formed in the bottom of the right side of the fixed sliding chute (3).

5. The fire door closer of claim 1, wherein: the stepping motor (10) output shaft is fixedly provided with a driving gear ring (14), the outer side of the rotating nut (11) is provided with a driven gear ring (15), and the driving gear ring (14) is meshed with the driven gear ring (15) and is connected with the driven gear ring.

6. The fire door closer of claim 1, wherein: and the opposite surfaces of the movable sliding block (4) and the fixed sliding block (8) are fixedly provided with anti-collision rubber pads.