Door closer

Abstract

The utility model relates to a door closer, which comprises a fixed seat and a movable seat, the fixed seat is rotatably connected with the movable seat, a spring is arranged between the fixed seat and the movable seat, and the spring is used for driving the movable seat to have a rotating trend after the movable seat rotates relative to the fixed seat. The structure of the door closer is simplified, the door closer comprises the fixed seat, the movable seat and the spring, the movable seat can rotate relative to the fixed seat and is used for clamping a main door, after the door is pushed, the movable seat is pushed to rotate by a plurality of angles relative to the fixed seat, after the force for pushing the door is removed, the spring pulls the movable seat to rotate to the initial position, the door closing effect is achieved, the structure is simple, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a door closer. Background Art

[0002] The traditional door closer uses the method of changing torsion into tension for movement, which will cause the loss of force, resulting in over - complexity of the product or unsatisfactory door - closing effect. Summary of the Utility Model

[0003] In view of the above situation, it is necessary to provide a door closer that solves at least one of the above problems.

[0004] A door closer includes a fixed seat and a movable seat. The fixed seat is rotatably connected to the movable seat, and a spring is arranged between the fixed seat and the movable seat. The spring is used to drive the movable seat to have a tendency of rotation after the movable seat rotates relative to the fixed seat.

[0005] By simplifying the structure of the door closer, with the fixed seat, the movable seat and the spring, the movable seat can rotate relative to the fixed seat and is used to hold the door. After the door is pushed, the movable seat is pushed to rotate a certain angle relative to the fixed seat. After removing the force of pushing the door, the spring pulls the movable seat to rotate back to the initial position to achieve the door - closing effect. The structure is simple and convenient for maintenance. Brief Description of the Drawings

[0006] Figure 1 is a schematic structural view of the door closer according to an embodiment of the utility model;

[0007] Figure 2 is another schematic structural view of the door closer according to an embodiment of the utility model;

[0008] Figure 3 is a schematic structural view of the door - opening state of the door closer according to an embodiment of the utility model;

[0009] Figure 4 is another schematic structural view of the door - opening state of the door closer according to an embodiment of the utility model;

[0010] Figure 5 is a schematic structural view of a door - opening state of the cooperation between the door closer and the door according to an embodiment of the utility model;

[0011] Figure 6 is another schematic structural view of a door - opening state of the cooperation between the door closer and the door according to an embodiment of the utility model;

[0012] Figure 7 is a schematic structural view of another door - opening state of the cooperation between the door closer and the door according to an embodiment of the utility model;

[0013] Figure 8It is another structural schematic diagram of the other open door state of the door closer and the door in the embodiment of the present utility model.

[0014] Note: Figure 5 and Figure 6 only the angles are different, Figure 7 and Figure 8 only the angles are different.

[0015] Reference numerals:

[0016] 100, fixed seat; 200, movable seat; 210, concave; 220, convex; 300, spring; 400, pulley; 500, limit seat; 600, door. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the door closer of the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] Please refer to Figures 1-4, a door closer of the present utility model includes a fixed seat 100 and a movable seat 200. The fixed seat 100 is rotatably connected to the movable seat 200. A spring 300 is arranged between the fixed seat 100 and the movable seat 200. The spring 300 is used to drive the movable seat 200 to have a tendency to rotate back after the movable seat 200 rotates relative to the fixed seat 100.

[0021] In this embodiment, the structure of the door closer is simplified. There are the fixed seat 100, the movable seat 200 and the spring 300. The movable seat 200 can rotate relative to the fixed seat 100 and is used to hold the door. After the door is pushed, the movable seat 200 is pushed to rotate relative to the fixed seat 100 by a certain angle. After the force of pushing the door is removed, the spring 300 pulls the movable seat 200 to rotate back to the initial position to achieve the door closing effect. The structure is simple and the maintenance is convenient.

[0022] In one embodiment, the spring 300 is a gas spring 300.

[0023] In one embodiment, both ends of the spring 300 are rotatably connected to the movable seat 200 and the fixed seat 100 respectively.

[0024] In this embodiment, both ends of the gas spring 300 are rotatably connected, so that the gas spring 300 maintains a linear motion state, thus ensuring the maximum utilization of the pulling force.

[0025] In one embodiment, a plurality of mounting holes are provided on the fixed seat 100. The fixed seat 100 is fixed to the door frame through the mounting holes in cooperation with fixing screws.

[0026] In this embodiment, the door frame here refers to the frame fixed near the door, which can be a door frame or other fixing frames. As long as it is stationary when the door rotates and can make the door push the movable seat 200 to rotate when the door rotates.

[0027] In one embodiment, a pulley 400 is provided on the movable seat 200. The rotation axis of the pulley 400 is parallel to the extension direction of the door.

[0028] In this embodiment, by providing the pulley 400, the pulley 400 is in direct contact with the door, avoiding scratching the door surface during the contact between the movable seat 200 and the door. The pulley 400 can slide on the door surface following the rotation of the door, making it more labor-saving to push the door.

[0029] In one embodiment, one end of the movable seat 200 is rotatably connected to the fixed seat 100, and the other end of the movable seat 200 is connected to the pulley 400.

[0030] In this embodiment, one end of the spring 300 is connected to the fixed seat 100, and the other end is connected to one end of the movable seat 200 close to the pulley 400. Both ends of the movable seat 200 are respectively connected to the fixed seat 100 and the pulley 400. Both ends of the spring 300 are also respectively arranged on the fixed seat 100 and the movable seat 200 close to the pulley 400. It has a larger length and acting radius, saves effort, and has a longer service life.

[0031] In one embodiment, one end of the fixed seat 100 close to the pulley 400 is rotatably connected to the spring 300, and the other end of the fixed seat 100 is rotatably connected to one end of the movable seat 200.

[0032] In one embodiment, a concave portion 210 is provided on the movable seat 200 corresponding to the connection position of the spring 300 and the fixed seat 100.

[0033] In this embodiment, by providing the concave portion 210 on the movable seat 200, when the movable seat 200 rotates back to the initial position, the connecting shaft on the fixed seat 100 connecting the spring 300 can be snapped into the concave portion 210, making the spring 300 parallel to the movable seat 200. The spring 300 is completely hidden in the movable seat 200, which is more beautiful. Moreover, the movable seat 200 is closer to the fixed seat 100, and the door is more tightly closed after being closed, without a door gap.

[0034] In one embodiment, the movable seat 200 extends a protrusion 220 towards the side of rotation. The protrusion 220 is connected to the pulley 400 through a connecting member.

[0035] In this embodiment, the function of the protrusion 220 is that when the movable seat 200 rotates back to the initial position, even if the fixed seat 100 is installed at a position far from the door, the door can still be propped up by the pulley 400, and it is closer to the initial position in the previous embodiment.

[0036] Similarly, the length of the protrusion 220 determines the position of the fixed seat 100, or the position of the fixed seat 100 determines the length of the protrusion 220. At the same time, it is also related to the relationship between the door and the door frame, and can be set according to the actual situation.

[0037] In one embodiment, a limit seat 500 is further included. The limit seat 500 is arranged on the door 600 and is located on the moving track of the pulley 400.

[0038] In this embodiment, by arranging the limit seat 500 on the moving track of the pulley 400 and using the limit seat 500 to limit the pulley 400 to return to the initial position on the moving track, the door closer 600 has more usage possibilities.

[0039] For example, the limit seat 500 is arranged near the initial position of the pulley 400. When the door 600 is opened and the pulley 400 slides and passes through the limit seat 500, even if it is driven to rotate, it will be blocked by the limit seat 500 and cannot return to the initial position, so as to prevent the door 600 from closing completely.

[0040] Then it can be thought that the distance of the limit seat 500 from the initial position determines the angle at which the door 600 stops after rotating and will not close, meeting the need that the door 600 does not need to close automatically in some cases. For example, when the door 600 needs to be opened and closed frequently, the door 600 can be opened until the pulley 400 passes through the limit seat 500. At this time, when the pulley 400 rotates back to the limit seat 500, it will be blocked, and the door 600 naturally cannot rotate and close.

[0041] Generally, when it is necessary to enter and exit frequently, the larger the opening angle of the door 600 is, the better. It is best to fix the door 600 when the door 600 is opened to 90 - 180°. To achieve a better opening effect of the door 600, the limit seat 500 needs to be arranged at the corresponding position on the door 600, which can be set according to the actual situation.

[0042] In an embodiment, the limit seat 500 includes a triangular limit block. The first surface of the limit block abuts against the door 600. The included angle between the second surface of the limit block and the door 600 is 70 - 170°. The third surface of the limit block and the door 600 form an acute angle. The third surface and the second surface of the limit block are successively located on the moving track of the pulley 400 when the door 600 is opened. The second surface of the limit block is used to limit the pulley 400 from moving back to the initial position.

[0043] In this embodiment, one surface of the triangular limit block forms an acute angle with the door 600, which is convenient for the pulley 400 to slide over it and is located on the side close to the initial position. One surface forms a larger acute angle or obtuse angle with the door 600 to prevent the pulley 400 from rotating back through. After the pulley 400 crosses the intersection of the two surfaces, the pulley 400 is naturally blocked by the second surface.

[0044] Preferably, the included angle between the second surface of the limit block and the door is a right angle.

[0045] In other embodiments, the limit seat can also be of other structures and shapes. For example, the limit seat is a groove on the door, etc.

[0046] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A door closer, characterized in that: It comprises a fixed seat and a movable seat, wherein the fixed seat is rotatably connected to the movable seat, a spring is arranged between the fixed seat and the movable seat, and the spring is used to drive the movable seat to have a tendency to rotate after the movable seat rotates relative to the fixed seat.

2. The door closer according to claim 1, characterized in that: The spring is a gas spring.

3. The door closer according to claim 1 or 2, characterized in that: The two ends of the spring are rotatably connected to the movable seat and the fixed seat respectively.

4. The door closer according to claim 1, characterized in that: The fixing seat is provided with a plurality of mounting holes, and the fixing seat is fixed on the door frame through the mounting holes and fixing screws.

5. The door closer according to claim 1, characterized in that: A pulley is arranged on the movable seat, and the rotation axis of the pulley is parallel to the extension direction of the door.

6. The door closer according to claim 5, characterized in that: One end of the movable seat is rotatably connected to the fixed seat, and the other end of the movable seat is connected to the pulley.

7. The door closer according to claim 5, characterized in that: One end of the fixed seat close to the pulley can be rotatably connected to the spring, and the other end of the fixed seat can be rotatably connected to one end of the movable seat.

8. The door closer according to claim 7, characterized in that: The movable seat is provided with a concave portion corresponding to the connection between the spring and the fixed seat.

9. The door closer according to claim 5, characterized in that: It also includes a limiting seat, which is arranged on the door and located on the moving track of the pulley.

10. The door closer according to claim 9, characterized in that: The limit seat includes a triangular limit block, the first surface of the limit block abuts the door, the second surface of the limit block and the door have an angle of 70-90°, the third surface of the limit block and the door form an acute angle, the third surface and the second surface of the limit block are successively located on the moving trajectory of the pulley when the door is opened, and the second surface of the limit block is used to limit the pulley from moving to an initial position.

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