Door closer for vertical hinged door

Abstract

The utility model provides a door closer for a vertical hinged door, which has the technical scheme that the door closer comprises a mounting box and a base, a steering positioning shaft is arranged in the mounting box, sleeves are arranged in the mounting box and positioned on two sides of the steering positioning shaft in a sliding manner, one end of each sleeve is fixedly provided with a top head, and the other end of each sleeve is provided with an air pressure spring; first positioning faces and second positioning faces are symmetrically arranged on the side wall of the steering positioning shaft, the distance between the first positioning faces is smaller than that between the second positioning faces, and steering curved faces are arranged between the first positioning faces and the second positioning faces. According to the door closer, the door closing effect is achieved through transverse counter-acting force generated by the steering curved surface, the air pressure springs are arranged on the two sides of the steering positioning shaft, stronger door closing force can be provided, a heavier door plate is driven to achieve the door closing effect, the size of the door closer can be reduced through the air pressure springs, and the attractiveness of the door plate cannot be affected after the door closer is installed.

Description

[Technical field]

[0001] The utility model relates to the field of door closers, in particular to a door closer for a swing door. [Background technology]

[0002] Most of the existing door closers are a kind of spring-like hydraulic device installed on the door head. When the door is opened, it can be compressed and then released to automatically close the door. It works like a spring door and can ensure that the door can be accurately and slowly closed to the initial position after being opened. The basic components of the hydraulic door closer include supporting guides, transmission gears, return springs, one-way valves, rack plungers, throttle valve cores and housings, end covers, sealing rings and connecting rods. The housings and connecting rods play the role of fixing the door closers and connecting the door leaf and door frame. The hydraulic door closer has a complex structure and a large volume. After installation, it is easy to affect the appearance of the door panel, and it is difficult to avoid the problem of oil leakage. The closing effect is not stable enough. [Utility Model Content]

[0003] In order to solve the problems that the existing hydraulic door closers have a complex structure, affect the appearance after installation, and have an unstable door closing effect, the utility model provides a door closer for a swing door.

[0004] In order to solve the above problems, the utility model provides the following technical solutions:

[0005] A door closer for a swing door, characterized in that it includes an installation box for fixing and connecting a door panel, a base for correspondingly fixing to an upper end of a door frame or on the ground is provided above or below the installation box, a steering positioning shaft connected to the base is provided and can rotate relatively in the installation box, a sleeve is provided in the installation box and can slide on both sides of the steering positioning shaft, a head for resisting against a side wall of the steering positioning shaft is fixedly installed at one end of the sleeve close to the steering positioning shaft, a gas pressure spring for pushing the sleeve to move is provided at the other end of the sleeve, a first positioning surface for positioning a door closing angle and a second positioning surface for positioning a door opening angle are symmetrically provided on the side walls of the steering positioning shaft, the spacing between the first positioning surfaces is smaller than the spacing between the second positioning surfaces, and a steering curved surface for changing the direction of the force of the gas pressure spring to achieve an automatic door closing effect is provided between the first positioning surface and the second positioning surface.

[0006] The door closer for a swing door as described above is characterized in that: a first rotating shaft connecting member is provided on one side of the installation box close to the base so as to be relatively rotatable, and a second rotating shaft connecting member is provided on the other side of the installation box so as to be relatively rotatable, the first rotating shaft connecting member and the second rotating shaft connecting member are respectively fixedly connected to the upper and lower ends of the steering positioning shaft, the first rotating shaft connecting member is fixedly connected to the base, and the first rotating shaft connecting member, the second rotating shaft connecting member and the steering positioning shaft are located on the same axis.

[0007] The door closer for swing doors as described above is characterized in that: a first connecting clamp is provided at one end of the first rotating shaft connecting member close to the steering positioning shaft, a second connecting clamp is provided at one end of the second rotating shaft connecting member close to the steering positioning shaft, a first connecting groove and a second connecting groove which are clamped to the first connecting clamp and the second connecting clamp are provided at the upper and lower ends of the steering positioning shaft respectively, and a fixing screw is provided in the first rotating shaft connecting member which passes through the steering positioning shaft and is screwed into the second rotating shaft connecting member.

[0008] The door closer for swing doors as described above is characterized in that a plug is provided at one end of the first rotating shaft connecting member close to the base, a socket for inserting the plug is provided on the base, and a screw hole for screwing in a screw to fix the first rotating shaft connecting member is provided on the side wall of the socket.

[0009] The door closer for a swing door as described above is characterized in that: a mounting opening for installing the steering positioning shaft is provided on the side wall of the mounting box, a detachable cover plate is provided outside the mounting opening, mounting holes for installing the sleeve and the gas spring are provided at both ends of the mounting box, an end cap is movably provided in the mounting hole, one end of the gas spring abuts against the end cap, and the other end abuts against the sleeve.

[0010] The door closer for swing doors as described above is characterized in that a limit plate is provided on one side of the installation box close to the base, and a limit block is provided on the first rotating shaft connector for blocking the limit plate to limit the rotation angle range of the door panel.

[0011] The door closer for a swing door as described above is characterized in that: contact points for buffering the impact force and reducing the impact noise are provided at both ends of the limit plate, and the material of the contact points is soft rubber.

[0012] The door closer for a swing door as described above is characterized in that a first washer and a second washer for reducing rotational friction are provided between the installation box and the first rotating shaft connector and the second rotating shaft connector respectively.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model is used for a door closer for a swing door, which adopts a gas pressure spring, can reduce the size of the door closer, has a simple structure, is quick to assemble, and is very convenient to apply and install. The installation box is embedded and installed in a mounting groove reserved in advance on the door panel, and the base is fixedly installed on the door frame or the ground. After installation, it will not affect the appearance of the door panel. Moreover, the gas pressure spring has a buffering effect, which can prevent the door panel from violent collision.

[0015] 2. The utility model is used for a door closer for a swing door, and is provided with a steering curved surface. When the door panel is pushed to open the door, the installation box is driven to rotate. Since the spacing between the first positioning surfaces is smaller than the spacing between the second positioning surfaces, the distances from the two ends of the steering curved surface to the center line of the steering positioning shaft gradually change, and the top head is turned from the first positioning surface to counteract different positions of the steering curved surface, and moves backward under the action of the reaction force. The backward movement of the top head pushes the sleeve to compress the gas pressure spring. When the external force of pushing the door disappears and the door opening angle is less than 90°, the top head does not reach the second positioning surface, and the gas pressure spring provides a forward thrust for the sleeve and the top head. Since the top head is still counteracted with the steering curved surface at this time, the thrust provided by the gas pressure spring acts on the steering curved surface to generate a lateral reaction force, prompting the top head to rotate back to the first positioning surface. , which causes the installation box to drive the door panel to automatically reset, so that the door panel slowly returns to the closed state. When the door opening angle is 90°, the top head separates from the steering surface and reaches the second positioning surface. The thrust provided by the gas pressure spring is offset by the reaction force, and the door panel is positioned in the open state; the door closer has a simple structure and achieves the door closing effect by generating a lateral reaction force through a special steering surface angle. Compared with the hydraulic door closer, it will not cause oil leakage due to wear, has a long service life and a stable door closing effect. At the same time, the first positioning surface and the second positioning surface are planes, and the abutting surface of the top head is also a plane, which can respectively locate the door closing angle and the door opening angle, which is convenient for practical application. Moreover, gas pressure springs are provided on both sides of the steering positioning shaft, which can provide a stronger door closing force and drive a heavier door panel to achieve the door closing effect.

Brief Description of the Drawings

[0016] Figure 1 is a three-dimensional diagram of the door closer;

[0017] Figure 2 is a bottom view of the door closer;

[0018] Figure 3 yes Figure 2 Sectional view in the AA direction;

[0019] Figure 4 yes Figure 3 Enlarged view of area D in the middle;

[0020] Figure 5 This is the first exploded view of the door closer;

[0021] Figure 6 is the second exploded view of the door closer;

[0022] Figure 7 This is the third exploded view of the door closer;

[0023] Figure 8 It is an enlarged view of the steering positioning shaft;

[0024] Fig. 9 is an enlarged view of an embodiment of a first rotating shaft connecting member with a limited stopper;

[0025] In the figure: 1 is a mounting box; 2 is a base; 3 is a steering positioning shaft; 4 is a sleeve; 5 is a top head; 6 is a gas spring; 7 is a first positioning surface; 8 is a second positioning surface; 9 is a steering curved surface; 10 is a cover plate; 11 is a first rotating shaft connector; 12 is a second rotating shaft connector; 13 is a first connecting clamp; 14 is a second connecting clamp; 15 is a first connecting slot; 16 is a second connecting slot; 17 is a fixing screw; 18 is a plug; 19 is a socket; 20 is a screw hole; 21 is an installation opening; 22 is a mounting hole; 23 is an end cap; 24 is a limit plate; 25 is a limit block; 26 is a touch point; 27 is a first washer; 28 is a second washer. [Specific implementation method]

[0026] The technical features of the present invention are further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand them.

[0027] A door closer for a swing door, such as Figures 1 to 9As shown, it includes a mounting box 1 for fixing and connecting a door panel, a base 2 for correspondingly fixing to the upper end of a door frame or on the ground is provided above or below the mounting box 1, a steering positioning shaft 3 connected to the base 2 is provided in the mounting box 1 and can rotate relatively, a sleeve 4 is provided in the mounting box 1 and is slidable on both sides of the steering positioning shaft 3, a top head 5 for resisting against the side wall of the steering positioning shaft 3 is fixedly installed at one end of the sleeve 4 close to the steering positioning shaft 3, the sleeve 4 slides back and forth in the mounting box 1 synchronously with the top head 5, a gas pressure spring 6 for pushing the sleeve 4 to move is provided at the other end of the sleeve 4, and the steering positioning shaft 3 is provided with a gas pressure spring 6. The gas pressure springs 6 are provided on both sides, which can provide stronger torsion and drive heavier door panels to achieve the door closing effect. The first positioning surface 7 for positioning the door closing angle and the second positioning surface 8 for positioning the door opening angle are symmetrically provided on the side walls of the steering positioning shaft 3. The first positioning surface 7 and the second positioning surface 8 are planes, and the abutting surface of the top head 5 is also a plane. The spacing between the first positioning surfaces 7 is smaller than the spacing between the second positioning surfaces 8, so that the distances from the two ends of the steering curved surface 9 to the center line of the steering positioning shaft 3 gradually change, so that when the mounting box 1 rotates relative to the steering positioning shaft 3, it can push the top head 5 and the sleeve 4 to slide back and forth. Figure 8 As shown, a steering curved surface 9 is provided between the first positioning surface 7 and the second positioning surface 8 for changing the direction of the force of the gas spring 6 to achieve an automatic door closing effect. When the top head 5 abuts against the steering curved surface 9, the thrust provided by the gas spring 6 will be decomposed into a lateral reaction force that is perpendicular to the thrust and biased toward the first positioning surface 7, so as to prompt the installation box 1 to drive the door panel to reset and close.

[0028] Specifically, the working process of the door closer is as follows:

[0029] When the door closer is installed, the installation box 1 is embedded in the installation groove reserved in advance at the top or bottom of the door panel, and the base 2 is fixedly installed on the door frame or the ground accordingly;

[0030] When the door panel is pushed to open, the installation box 1 will drive the sleeve 4, the gas spring 6 and the top head 5 to rotate with the steering positioning shaft 3 as the rotating shaft, and the base 2 and the steering positioning shaft 3 are fixed. Since the spacing between the first positioning surfaces 7 is smaller than the spacing between the second positioning surfaces 8, the distances from the two ends of the steering curved surface 9 to the center line of the steering positioning shaft 3 gradually change, and the top head 5 moves from the first positioning surface 7 to the different positions of the steering curved surface 9. The top head 5 moves backward under the action of the reaction force, and the backward movement of the top head 5 will push the sleeve 4 to compress the gas spring 6;

[0031] When the external force of pushing the door disappears and the door opening angle is less than 90°, the jack 5 does not reach the second positioning surface 8, and the gas spring 6 provides the sleeve 4 and the jack 5 with a forward thrust. Since the jack 5 is still against the turning curved surface 9 at this time, the thrust provided by the gas spring 6 acts on the turning curved surface 9 to generate a lateral reaction force, prompting the jack 5 to rotate back to the first positioning surface 7, thereby causing the installation box 1 to drive the door panel to automatically reset, so that the door panel slowly returns to the closed state;

[0032] When the door opening angle is 90°, the top head 5 separates from the turning curved surface 9 and reaches the second positioning surface 8, the thrust provided by the gas spring 6 is offset by the reaction force, and the door panel is positioned in the door opening state.

[0033] Specifically, a first rotating shaft connecting member 11 is relatively rotatable on one side of the installation box 1 close to the base 2, and a second rotating shaft connecting member 12 is relatively rotatable on the other side of the installation box 1. The first rotating shaft connecting member 11 and the second rotating shaft connecting member 12 are respectively fixedly connected to the upper and lower ends of the steering positioning shaft 3, the first rotating shaft connecting member 11 is fixedly connected to the base 2, and the first rotating shaft connecting member 11, the second rotating shaft connecting member 12 and the steering positioning shaft 3 are located on the same axis.

[0034] In addition, a first connection clamp 13 is provided at one end of the first rotating shaft connecting member 11 close to the steering positioning shaft 3, a second connection clamp 14 is provided at one end of the second rotating shaft connecting member 12 close to the steering positioning shaft 3, a first connection clamping groove 15 and a second connection clamping groove 16 which are clamped with the first connection clamp 13 and the second connection clamp 14 are provided at the upper and lower ends of the steering positioning shaft 3, respectively, and a fixing screw 17 which penetrates the steering positioning shaft 3 and is screwed into the second rotating shaft connecting member 12 is provided in the first rotating shaft connecting member 11;

[0035] During assembly, first install the steering positioning shaft 3 into the installation box 1 from the installation opening 21, and then install the first rotating shaft connecting member 11 nested with the first washer 27 and the second rotating shaft connecting member 12 nested with the second washer 28 onto the installation box 1 respectively, and at the same time, make the first connecting clamp 13 and the second connecting clamp 14 respectively fit into the first connecting groove 15 and the second connecting groove 16, and finally screw in the fixing screw 17 to connect and fix, so that the steering positioning shaft 3, the first rotating shaft connecting member 11 and the second rotating shaft connecting member 12 together constitute the rotation center axis of the installation box 1.

[0036] Specifically, a plug 18 is provided at one end of the first rotating shaft connector 11 close to the base 2, a socket 19 for inserting the plug 18 is provided on the base 2, and a screw hole 20 for screwing in a screw to fix the first rotating shaft connector 11 is provided on the side wall of the socket 19. When assembling the base 2, the base 2 only needs to be nested and installed on the plug 18 through the socket 19, and the plug 18 is fixed by screwing a screw into the screw hole 20, so as to prevent the base 2 from falling off.

[0037] In addition, if Figure 6 or Figure 7 As shown, a mounting opening 21 for installing the steering positioning shaft 3 is provided on the side wall of the mounting box 1, a removable cover plate 10 is provided outside the mounting opening 21, mounting holes 22 for installing the sleeve 4 and the gas spring 6 are provided at both ends of the mounting box 1, and an end cap 23 is movably provided in the mounting hole 22, one end of the gas spring 6 is against the end cap 23, and the other end is against the sleeve 4, and the end cap 23 is installed in the mounting hole 22 in a threaded screw-on manner, and the size of the initial compression elastic force of the gas spring 6 can be adjusted by the screw-on depth of the end cap 23, thereby providing a stronger torsion and driving a heavier door panel to achieve a door closing effect.

[0038] Specifically, a limiting piece 24 is provided on one side of the installation box 1 close to the base 2, and a limiting block 25 is provided on the first rotating shaft connector 11 for blocking the limiting piece 24 to limit the rotation angle range of the door panel. Figure 7 and Fig. 9 As shown; the limit plate 24 combined with the limit block 25 can limit the rotation angle of the installation box 1 relative to the base 2 within the range of -90° to +90°, and can be applied to two-way swing doors; when the limit block 25 is not provided on the first rotating shaft connector 11, the installation box 1 can be rotated 360°, and the door closer can be applied to a revolving door.

[0039] In addition, if Figure 6 or Figure 7 As shown, at both ends of the limit plate 24, there are collision points 26 for buffering collision force and reducing collision noise. The collision points 26 are made of soft rubber, which can prevent the door panel from hitting the wall due to excessive force when opening the door, thereby avoiding severe collision of the door panel.

[0040] Specifically, Figure 5 or Figure 6 As shown, a first washer 27 and a second washer 28 for reducing rotational friction are provided between the installation box 1 and the first rotating shaft connector 11 and the second rotating shaft connector 12, respectively, so as to reduce wear of parts and extend service life.

[0041] The embodiments described in the present invention are merely descriptions of preferred implementations and are not limited to the precise structures described above and shown in the accompanying drawings. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the protection scope of the present invention.

Claims

1. A door closer for a swing door, characterized in that: The invention comprises a mounting box (1) for fixing and connecting a door panel, a base (2) for correspondingly fixing to the upper end of a door frame or on the ground is arranged above or below the mounting box (1), a steering positioning shaft (3) connected to the base (2) is arranged in the mounting box (1) and can rotate relatively, a sleeve (4) is arranged in the mounting box (1) and can slide on both sides of the steering positioning shaft (3), a head (5) for abutting against the side wall of the steering positioning shaft (3) is fixedly installed at one end of the sleeve (4) close to the steering positioning shaft (3), and a plurality of sleeves (4) are arranged in the mounting box (1) and can slide on both sides of the steering positioning shaft (3). The other end of the sleeve (4) is provided with a gas pressure spring (6) for pushing the sleeve (4) to move, and a first positioning surface (7) for positioning the door closing angle and a second positioning surface (8) for positioning the door opening angle are symmetrically provided on the side wall of the steering positioning shaft (3), the spacing between the first positioning surfaces (7) is smaller than the spacing between the second positioning surfaces (8), and a steering curved surface (9) is provided between the first positioning surface (7) and the second positioning surface (8) for changing the direction of the force of the gas pressure spring (6) to achieve an automatic door closing effect.

2. The door closer for a swing door according to claim 1, characterized in that: A first rotating shaft connecting member (11) is relatively rotatably provided on one side of the installation box (1) close to the base (2), and a second rotating shaft connecting member (12) is relatively rotatably provided on the other side of the installation box (1), the first rotating shaft connecting member (11) and the second rotating shaft connecting member (12) are respectively fixedly connected to the upper and lower ends of the steering positioning shaft (3), the first rotating shaft connecting member (11) is fixedly connected to the base (2), and the first rotating shaft connecting member (11), the second rotating shaft connecting member (12) and the steering positioning shaft (3) are located on the same axis.

3. The door closer for a swing door according to claim 2, characterized in that: A first connecting clamp (13) is provided at one end of the first rotating shaft connecting member (11) close to the steering positioning shaft (3), a second connecting clamp (14) is provided at one end of the second rotating shaft connecting member (12) close to the steering positioning shaft (3), a first connecting clamping groove (15) and a second connecting clamping groove (16) are provided at the upper and lower ends of the steering positioning shaft (3), respectively, and are connected to the first connecting clamping groove (13) and the second connecting clamping groove (14), and a fixing screw (17) is provided in the first rotating shaft connecting member (11) and passes through the steering positioning shaft (3) and is screwed into the second rotating shaft connecting member (12).

4. The door closer for a swing door according to claim 2, characterized in that: A plug (18) is provided at one end of the first rotating shaft connecting member (11) close to the base (2), a socket (19) for inserting the plug (18) is provided on the base (2), and a screw hole (20) for screwing in a screw to fix the first rotating shaft connecting member (11) is provided on the side wall of the socket (19).

5. The door closer for a swing door according to claim 1, characterized in that: A mounting opening (21) for mounting the steering positioning shaft (3) is provided on the side wall of the mounting box (1), a detachable cover plate (10) is provided outside the mounting opening (21), mounting holes (22) for mounting the sleeve (4) and the gas pressure spring (6) are provided at both ends of the mounting box (1), an end cap (23) is movably provided in the mounting hole (22), one end of the gas pressure spring (6) abuts against the end cap (23), and the other end abuts against the sleeve (4).

6. The door closer for a swing door according to claim 2, characterized in that: A limiting plate (24) is provided on one side of the installation box (1) close to the base (2), and a limiting block (25) is provided on the first rotating shaft connecting member (11) for blocking the limiting plate (24) to limit the rotation angle range of the door panel.

7. The door closer for a swing door according to claim 6, characterized in that: Collision points (26) for buffering collision force and reducing collision noise are provided at both ends of the limiting piece (24), and the collision points (26) are made of soft rubber.

8. The door closer for a swing door according to claim 2, characterized in that: A first washer (27) and a second washer (28) for reducing rotational friction are provided between the installation box (1) and the first rotating shaft connecting member (11) and the second rotating shaft connecting member (12) respectively.

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