Door closer and connecting rod for use in a new type of door closer

Abstract

The utility model discloses a connecting rod applied to new -type door closer, it includes fixed base, the front surface fixed connection of fixed base has first axle seat, and first axle seat rotationally connected has first connecting rod, U type mounting frame, U type mounting frame is located below fixed base, and the front surface fixed connection of U type mounting frame has second axle seat, and second axle seat rotationally connected has second connecting rod, and second connecting rod rotationally connected has third connecting rod, and third connecting rod is rotationally connected with first connecting rod. Through fixed base, U type mounting frame, axle seat and connecting rod constitute connecting rod position limiting mechanism, can be in a certain range to the rotation of door plant position limiting, prevent the damage and safety problem caused by over -range rotation, through fixed base, horizontal mounting panel, U type mounting frame and screw mounting hole constitute the installation structure, can install door closer fast on the door frame and door plant, and the structure is stable and firm, has reduced the installation construction difficulty of door closer.

Description

Technical Field

[0001] This utility model relates to the field of door closer technology, and in particular to a door closer and a connecting rod used in a new type of door closer. Background Technology

[0002] Existing door closer linkages do not restrict the rotation range of the door panel during opening and closing, which can easily lead to component damage and safety issues, hindering the normal use of the door closer. A Chinese patent discloses a "hydraulic linkage for a door closer" (application number CN202321893821.3). During installation, the mounting plate is first fixed to the door closer with fastening bolts. Then, the sleeve connected to the hydraulic rod is placed on the outer surface of the actuating rod. Rotating the actuating rod inside the fixed block causes the connecting rod to connect with the sleeve via a threaded connection. Pulling the pin rod, under the action of a spring, engages the pin rod with the pin hole inside the connecting rod for final fixation. The other end of the hydraulic rod is connected to the door body via a fixed bracket. When the length needs to be adjusted, an external control device is activated to extend or retract the movable end of the hydraulic rod. However, this door closer linkage lacks restriction on the door's rotation range, which can lead to component damage and safety issues. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a connecting rod for use in a new type of door closer. The connecting rod limiting mechanism is composed of a fixed seat, a U-shaped mounting frame, a shaft seat and a connecting rod, which can limit the rotation of the door panel within a certain range, preventing damage and safety problems caused by excessive rotation. The mounting structure is composed of a fixed seat, a horizontal mounting plate, a U-shaped mounting frame and threaded mounting holes, which allows the door closer to be quickly installed on the door frame and door panel. The structure is stable and firm, reducing the difficulty of installing the door closer.

[0004] This utility model also provides a linkage having the above-mentioned application in a novel door closer, comprising: a fixed base, wherein a first bearing is fixedly connected to the front surface of the fixed base, and a first linkage is rotatably connected to the first bearing; a U-shaped mounting frame, wherein the U-shaped mounting frame is located below the fixed base, a second bearing is fixedly connected to the front surface of the U-shaped mounting frame, a second linkage is rotatably connected to the second bearing, and a third linkage is rotatably connected to the second linkage and the first linkage.

[0005] According to the present invention, a connecting rod applied to a novel door closer includes a horizontal mounting plate fixedly connected to the upper end of the fixing base, the horizontal mounting plate having a first threaded mounting hole. This facilitates the installation and fixing of the door closer.

[0006] According to the present invention, a connecting rod applied to a novel door closer is provided, wherein a second threaded mounting hole is provided within the U-shaped mounting frame, and the second threaded mounting holes are evenly arranged inside the U-shaped mounting frame. This facilitates the installation and fixing of the door closer.

[0007] According to the present invention, a connecting rod applied to a novel door closer is provided, wherein one end of the first connecting rod is fixedly connected to a first rotating shaft, the first rotating shaft is sleeved with a first shaft seat, and the end of the first connecting rod away from the first rotating shaft is fixedly connected to a first fixing sleeve. This facilitates the stable use of the connecting rod.

[0008] According to the present invention, a connecting rod applied to a novel door closer is provided, wherein one end of the second connecting rod is fixedly connected to a second rotating shaft, the second rotating shaft is sleeved with a second shaft seat, and the end of the second rotating shaft away from the second rotating shaft is fixedly connected to a second fixing sleeve. This facilitates the stable use of the connecting rod.

[0009] According to the present invention, a connecting rod applied to a novel door closer includes a third connecting rod with a third fixed sleeve fixedly connected to one end, and a fourth fixed sleeve fixedly connected to the end of the third connecting rod away from the third fixed sleeve. The third fixed sleeve is rotatably connected to a second fixed sleeve via a third rotating shaft, and the fourth fixed sleeve is rotatably connected to a first fixed sleeve via a fourth rotating shaft. This design facilitates stable use of the connecting rod.

[0010] The door closer according to this utility model includes a connecting rod applied to a novel door closer, as well as a stepper motor and a fixing block. This facilitates stable operation of the door closer.

[0011] According to the present invention, a door closer is characterized in that a stepper motor is fixedly connected to the right end of a mounting base, and a PLC controller and an infrared sensor are disposed on the upper end of the stepper motor. The PLC controller is connected to the stepper motor, and the infrared sensor is connected to the PLC controller. This facilitates the stable operation of the door closer.

[0012] According to the present invention, a door closer is characterized in that the output end of the stepper motor is fixedly connected to a fixed block via a drive shaft, a bushing is fixedly connected to the lower end of the stepper motor, the bushing is sleeved with the drive shaft, and the fixed block is fixedly connected to a U-shaped mounting frame. This facilitates stable operation of the door closer.

[0013] Beneficial effects:

[0014] 1. Compared with the prior art, the door closer and the connecting rod applied to the new door closer, through the fixed seat, U-shaped mounting frame, shaft seat and connecting rod forming a connecting rod limiting mechanism, can limit the rotation of the door panel within a certain range, and prevent damage and safety problems caused by excessive rotation;

[0015] 3. Compared with existing technologies, this door closer and the connecting rod applied to the new door closer form an installation structure consisting of a fixed base, a horizontal mounting plate, a U-shaped mounting frame, and threaded mounting holes. This allows the door closer to be quickly installed on the door frame and door panel, with a stable and robust structure that reduces the difficulty of installing the door closer. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a door closer and a connecting rod applied to a new type of door closer according to the present invention.

[0018] Figure 2 This is a top view schematic diagram of a door closer and a connecting rod applied to a new type of door closer according to the present invention.

[0019] Figure 3 This is a front view schematic diagram of a door closer and a connecting rod applied to a new type of door closer according to the present invention.

[0020] Figure 4 This is a longitudinal three-dimensional cross-sectional structural diagram of a door closer and a connecting rod applied to a new type of door closer according to the present invention.

[0021] Legend:

[0022] 1. Fixed base; 2. First threaded mounting hole; 3. First shaft seat; 4. Horizontal mounting plate; 5. PLC controller; 6. Infrared sensor; 7. Stepper motor; 8. Bushing; 9. Fixed block; 10. Second fixed sleeve; 11. Third fixed sleeve; 12. Third rotating shaft; 13. Third connecting rod; 14. First connecting rod; 15. Second connecting rod; 16. Second shaft seat; 17. Second threaded mounting hole; 18. U-shaped mounting frame; 19. Drive shaft; 20. First fixed sleeve; 21. Second rotating shaft; 22. First rotating shaft; 23. Fourth rotating shaft; 24. Second fixed sleeve. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3This utility model provides a connecting rod for use in a new type of door closer, which includes a fixed base 1, a horizontal mounting plate 4 fixedly connected to the upper end of the fixed base 1, a first threaded mounting hole 2 provided on the horizontal mounting plate 4, a first bearing 3 fixedly connected to the front surface of the fixed base 1, a first connecting rod 14 rotatably connected to the first bearing 3, a first rotating shaft 22 fixedly connected to one end of the first connecting rod 14, the first rotating shaft 22 being sleeved with the first bearing 3, and a first fixing sleeve 20 fixedly connected to the end of the first connecting rod 14 away from the first rotating shaft 22.

[0025] Reference Figure 1 , Figure 2 and Figure 3 A U-shaped mounting frame 18 is provided inside the U-shaped mounting frame 18, and the second threaded mounting holes 17 are evenly arranged inside the U-shaped mounting frame 18. The U-shaped mounting frame 18 is located below the fixed base 1. A second shaft seat 16 is fixedly connected to the front surface of the U-shaped mounting frame 18. A second connecting rod 15 is rotatably connected to the second shaft seat 16. A second rotating shaft 21 is fixedly connected to one end of the second connecting rod 15. The second rotating shaft 21 is sleeved with the second shaft seat 16. A second fixing sleeve 24 is fixedly connected to the end of the second rotating shaft 21 away from the second rotating shaft 21. A third connecting rod 13 is rotatably connected to the second connecting rod 15. The third connecting rod 13 is rotatably connected to the first connecting rod 14. A third fixing sleeve 11 is fixedly connected to one end of the third connecting rod 13. A fourth fixing sleeve 10 is fixedly connected to the end of the third connecting rod 13 away from the third fixing sleeve 11. The third fixing sleeve 11 is rotatably connected to the second fixing sleeve 24 through the third rotating shaft 12. The fourth fixing sleeve 10 is rotatably connected to the first fixing sleeve 20 through the fourth rotating shaft 23.

[0026] Specifically, during installation and fixing, the door closer is installed on the door frame via the horizontal mounting plate 4, and the door closer is fixed to the door panel via the U-shaped mounting frame 18. During the opening and closing process, the first link 14, the second link 15, and the third link 13 will rotate relative to each other between the fixed seat 1 and the U-shaped mounting frame 18 to cooperate with the opening and closing process of the door panel, thus facilitating the limitation of the rotation range.

[0027] Reference Figure 1 and Figure 4 A door closer includes a linkage as described above for use in a new type of door closer, and also includes a stepper motor 7 and a fixing block 9. The stepper motor 7 is fixedly connected to the right end of the fixing base 1. A PLC controller 5 and an infrared sensor 6 are provided on the upper end of the stepper motor 7. The PLC controller 5 is connected to the stepper motor 7, and the infrared sensor 6 is connected to the PLC controller 5. The output end of the stepper motor 7 is fixedly connected to the fixing block 9 through a drive shaft 19. A bushing 8 is fixedly connected to the lower end of the stepper motor 7. The bushing 8 is sleeved with the drive shaft 19. The fixing block 9 is fixedly connected to a U-shaped mounting frame 18.

[0028] Specifically, during the opening and closing process of the door closer, when the infrared sensor 6 detects a person, the infrared sensor 6 sends a signal to the PLC controller 5. The PLC controller 5 then sends an opening command to the stepper motor 7, causing the stepper motor 7 to drive the U-shaped mounting frame 18 to rotate counterclockwise. The U-shaped mounting frame 18 then drives the door panel to rotate counterclockwise for automatic door opening. When the infrared sensor 6 does not detect a person within a certain period of time, the PLC controller 5 sends a closing command to the stepper motor 7, causing the stepper motor 7 to drive the U-shaped mounting frame 18 to rotate clockwise. The U-shaped mounting frame 18 then drives the door panel to rotate clockwise for automatic door closing.

[0029] Working principle: When the infrared sensor 6 detects a person, the PLC controller 5 will control the stepper motor 7 to open the door. When the infrared sensor 6 does not detect a person within a certain period of time, the PLC controller 5 will control the stepper motor 7 to close the door. During this process, the first link 14, the second link 15 and the third link 13 will rotate between the fixed base 1 and the U-shaped mounting frame 18 to cooperate with the opening and closing process of the door panel.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Various changes can be made by those skilled in the art without departing from the spirit of the present utility model.

Claims

1. A linkage used in a novel door closer, characterized in that, include: A fixed seat (1) is fixedly connected to a first bearing seat (3) on its front surface, and a first connecting rod (14) is rotatably connected to the first bearing seat (3). A U-shaped mounting frame (18) is located below the fixed base (1). A second bearing seat (16) is fixedly connected to the front surface of the U-shaped mounting frame (18). The second bearing seat (16) is rotatably connected to a second connecting rod (15). The second connecting rod (15) is rotatably connected to a third connecting rod (13). The third connecting rod (13) is rotatably connected to a first connecting rod (14).

2. The linkage applied to a novel door closer according to claim 1, characterized in that, The upper end of the fixed base (1) is fixedly connected to a horizontal mounting plate (4), and the horizontal mounting plate (4) is provided with a first threaded mounting hole (2).

3. The linkage applied to a novel door closer according to claim 1, characterized in that, The U-shaped mounting frame (18) is provided with a second threaded mounting hole (17), which is evenly arranged inside the U-shaped mounting frame (18).

4. The linkage used in a novel door closer according to claim 1, characterized in that, One end of the first connecting rod (14) is fixedly connected to a first rotating shaft (22), the first rotating shaft (22) is sleeved with a first shaft seat (3), and the end of the first connecting rod (14) away from the first rotating shaft (22) is fixedly connected to a first fixing sleeve (20).

5. The linkage used in a novel door closer according to claim 1, characterized in that, One end of the second connecting rod (15) is fixedly connected to a second rotating shaft (21), the second rotating shaft (21) is sleeved with a second shaft seat (16), and the end of the second rotating shaft (21) away from the second rotating shaft (21) is fixedly connected to a second fixing sleeve (24).

6. The linkage used in a novel door closer according to claim 1, characterized in that, One end of the third link (13) is fixedly connected to a third fixing sleeve (11), and the other end of the third link (13) away from the third fixing sleeve (11) is fixedly connected to a fourth fixing sleeve (10). The third fixing sleeve (11) is rotatably connected to the second fixing sleeve (24) through a third rotating shaft (12), and the fourth fixing sleeve (10) is rotatably connected to the first fixing sleeve (20) through a fourth rotating shaft (23).

7. A door closer, characterized in that... The linkage described in any one of claims 1-6 for use in a novel door closer also includes a stepper motor (7) and a fixing block (9).

8. A door closer according to claim 7, characterized in that, The stepper motor (7) is fixedly connected to the right end of the fixed base (1). The upper end of the stepper motor (7) is provided with a PLC controller (5) and an infrared sensor (6). The PLC controller (5) is connected to the stepper motor (7), and the infrared sensor (6) is connected to the PLC controller (5).

9. A door closer according to claim 7, characterized in that, The output end of the stepper motor (7) is fixedly connected to the fixed block (9) via the drive shaft (19). The lower end of the stepper motor (7) is fixedly connected to the bushing (8). The bushing (8) is sleeved with the drive shaft (19). The fixed block (9) is fixedly connected to the U-shaped mounting frame (18).

Images