Door opening and closing device

Abstract

The utility model discloses a door opening and closing device which comprises a door frame and a door movably installed on the door frame through a hinge. The opening and closing device is installed on the door frame and the door and plays a role in positioning after the door is opened and plays a role in assisting when the door is closed so that the door can be automatically closed; the opening and closing device comprises an adapter column movably connected with the door frame, an opening and closing frame with one end movably connected with the adapter column and the other end slidably connected with the door, and a tension spring connected with the adapter column and the opening and closing frame. Through the arrangement of the device, when the door is opened, the door can be automatically closed or in a normally open state only by controlling the opening degree of the door.

Description

Technical Field

[0001] The utility model relates to a door opener and closer, in particular to a door opener and closer. Background Art

[0002] In the prior art, in order to enable a door to automatically close after opening, a spring is usually installed on the door. When the door is opened, a squeezing force is applied to the spring, and when the door is closed, the spring's reset force automatically resets the door to achieve automatic closing. This method requires the use of an object to block the door when the door needs to be kept open. The weight of the object used to block the door must be greater than the spring's reset force, otherwise it will not be able to block the door. In the prior art, door suction is usually used to keep the door open after opening. The door is sucked in by magnets to keep it open. However, the magnetic suction method has a weak suction force. Under the action of the spring's reset force and factors such as wind, it is difficult to keep the door open. Moreover, both the door suction and the spring installed on the door can only achieve unilateral automatic closing or limiting the door after opening. They have many components and are unreliable. Therefore, it is necessary to develop a door opener and closer that can achieve both automatic closing and normal opening to meet different usage scenarios. To this end, a door opener and closer is proposed. Utility Model Content

[0003] The purpose of the present invention is to solve the above problems and to provide a door opener.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a door opener and closer, comprising a door frame and a door movably mounted on the door frame via a hinge; the feature being that the opener and closer also comprises an opener and closer mounted on the door frame and the door to position the door after it is opened and to assist the door in automatically closing when it is closed; the opener and closer comprises an adapter column movably mounted on the door frame, an opening and closing frame movably connected to the adapter column at one end and slidably connected to the door at the other end, and a tension spring connecting the adapter column and the opening and closing frame.

[0005] More preferably, it further comprises a limiting guide frame installed on the door, and the opening and closing frame is provided with a roller slidably connected to the limiting guide frame.

[0006] Further preferably, the opening and closing frame is provided with a connecting rod for connecting a tension spring, and one end of the tension spring is connected to the connecting rod.

[0007] Further preferably, the tension spring is installed on the opening and closing frame and is in an inclined state with respect to the opening and closing frame.

[0008] More preferably, it also includes a fixing frame installed on the door frame for movably installing the adapter column.

[0009] The beneficial effects of the utility model are as follows: through the setting of the device, by controlling the opening and closing angle of the door, the door can be easily closed automatically or kept open; it can be widely used in places such as warehouses, large shopping malls, public buildings, etc. that need to be kept open or closed for a long time, and can also be used as a fire door closer;

[0010] When the door needs to be kept open, it is only necessary to open the door to an angle greater than 90°, so that the angle between the tension spring and the door frame becomes an obtuse angle. At this time, the tension spring exerts a backward pulling force on the opening and closing frame, which in turn exerts a backward pulling force on the limit guide frame. The limit guide frame then exerts a pulling force on the door, keeping the door open. Under the influence of the tension of the tension spring, the door will not close easily.

[0011] When you need to automatically close the door after opening it: just make the angle between the tension spring and the door frame less than 90° when opening or closing the door, and it will be at an acute angle. At this time, the tension of the tension spring will pull the opening and closing frame, and the opening and closing frame will apply a thrust to the door, closing it automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attachment Figure 1 It is a structural diagram of the utility model;

[0013] Attachment Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0014] Attachment Figure 3 It is a schematic diagram of the top structure of the utility model.

[0015] Legend: 1. Door frame; 2. Door; 3. Opener; 4. Adapter column; 5. Opening and closing frame; 6. Tension spring; 7. Limiting guide frame; 8. Roller; 9. Connecting rod; 10. Fixed frame. DETAILED DESCRIPTION

[0016] Below we further explain the door opener and closer of the present invention with reference to the accompanying drawings.

[0017] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0018] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0019] See Figure 1-3 As shown in the figure, a door opener and closer comprises a door frame 1 and a door 2 movably mounted on the door frame 1 via a hinge; the door opener and closer further comprises an opener and closer 3 mounted on the door frame 1 and the door 2 to position the door 2 after it is opened and to assist the door 2 in closing so that it automatically closes; the opener and closer 3 comprises an adapter column 4 movably mounted on the door frame 1, an opening and closing frame 5 having one end movably connected to the adapter column 4 and the other end slidably connected to the door 2, and a tension spring 6 connecting the adapter column 4 and the opening and closing frame 5;

[0020] Through the setting of this device, when the door 2 is opened, it is only necessary to control the opening degree of the door 2 so that the door 2 can be automatically closed or kept in a normally open state;

[0021] When the door 2 needs to be kept open, it is only necessary to open the door 2 to an angle greater than 90°, so that the angle between the tension spring 6 and the door frame 1 becomes an obtuse angle. At this time, the tension spring 6 exerts a backward pulling force on the opening and closing frame 5, and the opening and closing frame 5 exerts a backward pulling force on the limiting guide frame 7. The limiting guide frame 7 exerts a pulling force on the door 2, so that the door 2 remains open. Under the influence of the tension of the tension spring 6, the door 2 will not be easily closed.

[0022] When it is necessary to automatically close the door 2 after opening it, the angle between the tension spring 6 and the door frame 1 is made less than 90° when opening or closing the door 2, and is at an acute angle. At this time, the tension of the tension spring 6 pulls the opening and closing frame 5, and the opening and closing frame 5 applies a thrust to the door 2, so that the door 2 is automatically closed.

[0023] In one embodiment, it further includes a limiting guide frame 7 installed on the door 2, and a roller 8 is installed on the opening and closing frame 5 that is slidably connected to the limiting guide frame 7; through the arrangement of the limiting guide frame 7 and the roller 8, when the door 2 is opened or closed, the door 2 drives the limiting guide frame 7 to move, and the limiting guide frame 7 pushes the roller 8 to move along the limiting guide frame 7 during the movement, or the opening and closing frame 5 is pulled by the force of the tension spring 6, and the opening and closing frame 5 pushes the limiting guide frame 7 through the roller 8 to push the door 2 to move.

[0024] In one embodiment, the opening and closing frame 5 is provided with a connecting rod 9 for connecting the tension spring 6 , and one end of the tension spring 6 is connected to the connecting rod 9 ; the connecting rod 9 is provided to connect the opening and closing frame 5 and the tension spring 6 .

[0025] In one embodiment, the tension spring 6 is installed on the opening and closing frame 5 and is in an inclined state with respect to the opening and closing frame 5; by connecting the tension spring 6 to the opening and closing frame 5 in an inclined manner, an angle is formed between the tension spring 6 and the door frame 1. When the opening of the door 2 is greater than 90 degrees, the angle between the tension spring 6 and the door frame 1 is obtuse. At this time, the tension of the tension spring 6 on the opening and closing frame 5 acts on the door 2, applying a backward tension to the door 2 to keep it in an open state; when the opening of the door 2 is less than 90 degrees, the angle between the tension spring 6 and the door frame 1 is acute. At this time, the tension of the tension spring 6 drives the opening and closing frame 5 to form a forward thrust on the door 2, driving the door 2 to automatically close and be in a closed state.

[0026] In one embodiment, the door frame 1 further includes a fixing bracket 10 installed on the door frame 1 for movably installing the adapter column 4. The fixing bracket 10 is provided to movably install the adapter column 4.

[0027] When the utility model is in use: when pedestrians enter or exit normally and need to close the door 2 automatically, they only need to open the door 2 and then enter or exit so that the angle between the door 2 and the door frame 1 or between the tension spring 6 and the door frame 1 is at an acute angle. At this time, the tension of the tension spring 6 drives the opening and closing frame 5 to form a thrust on the door 2, driving the door 2 to close automatically; when the door 2 needs to be kept open, the door 2 is pushed to open and its opening angle is greater than 90°, so that the tension spring 6 and the door frame 1 are at an obtuse angle. At this time, the tension of the tension spring 6 forms a backward pulling force on the opening and closing frame 5, and the opening and closing frame 5 applies the backward pulling force to the door 2, so that the door 2 is in a normally open state.

[0028] The protection scope of the present invention is not limited to the above embodiment and its variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment fall within the protection scope of the present invention.

Claims

1. A door opener and closer comprising a door frame (1) and a door (2) movably mounted on the door frame (1) via a hinge; wherein: The invention also includes an opener (3) installed on the door frame (1) and the door (2) to play a positioning role after the door (2) is opened, and to play a boosting role when the door (2) is closed so that it closes automatically; the opener (3) includes a transfer column (4) installed and movably connected to the door frame (1), an opening and closing frame (5) with one end movably connected to the transfer column (4) and the other end slidably connected to the door (2), and a tension spring (6) connecting the transfer column (4) and the opening and closing frame (5).

2. The door opener according to claim 1, characterized in that: It also includes a limiting guide frame (7) installed on the door (2), and a roller (8) slidably connected to the limiting guide frame (7) is installed on the opening and closing frame (5).

3. The door opener according to claim 1, characterized in that: The opening and closing frame (5) is provided with a connecting rod (9) for connecting the tension spring (6), and one end of the tension spring (6) is connected to the connecting rod (9).

4. The door opener according to claim 3, characterized in that: The tension spring (6) is installed on the opening and closing frame (5) and is in an inclined state between the tension spring (6) and the opening and closing frame (5).

5. The door opener according to claim 1, characterized in that: It also includes a fixing frame (10) mounted on the door frame (1) for movably mounting the adapter column (4).

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