Bidirectional installation door closing device

Abstract

The utility model discloses a bi-directional installation door closing device which comprises a shell, a rotating shaft, an installation base, an elastic mechanism and a damping mechanism, a crankshaft cavity is formed in the shell, the rotating shaft is rotationally arranged in the crankshaft cavity, the elastic mechanism and the damping mechanism are both arranged in the shell, the crankshaft cavity penetrates through the shell in the vertical direction, and the installation base is arranged on the installation base. According to the door closing device, the first connecting groove and the second connecting groove are formed in the two ends of the rotating shaft respectively, in the installation process of the door closing device, the plug pin of the installation base can be inserted into the first connecting groove or the second connecting groove in a matched mode, and then the fixing screw penetrates through the center through hole of the rotating shaft to be connected with the plug pin; the bolt is fixedly connected with the rotating shaft; when the door closing device is installed, the door closing device can be installed on the installation base in two directions without being divided into the upper face and the lower face, then the installation base is connected with other connecting mechanisms, installation of the door closing device is facilitated, and the installation flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to a two-way installation door closing device. Background Art

[0002] Door closers are devices designed to assist the opening and closing of doors and windows. The significance of door closers is not only to close the door automatically, but also to protect the door frame and door body. They are not only used in commercial and public buildings, but also widely used in homes.

[0003] The applicant disclosed a door closing device with adjustable door closing speed in Chinese patent document application number CN202321646258.X on November 21, 2023. During installation, the rotating shaft 3 is provided with a bearing and then placed in the shaft accommodating cavity 11, and then the buffer damper 2 and the return spring 4 are respectively installed in the first installation cavity 12 and the second installation cavity 13, the buffer damper 2 is limited by the damping adjustment member 5 at the end, and the return spring 4 is limited by the force adjustment mechanism 6 at the end, and the positioning protrusion 21 of the buffer damper 2 corresponds to the first positioning groove 301 or the second positioning groove 302 of the protrusion of the rotating shaft 3, and finally the cover plate 7 is installed to the installation groove 14, and the end of the rotating shaft 3 is extended out of the cover plate 7 to be connected to the connecting arm or other connecting mechanism; in this structure, the rotating shaft can only be connected to other connecting mechanisms in a single direction, which affects the flexibility of the door closer during the installation process and is difficult to install according to the actual application environment. Utility Model Content

[0004] The purpose of the utility model is to provide a two-way installation door closing device, which has solved the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-way installation door closing device, comprising a shell, a rotating shaft, a mounting seat, an elastic mechanism and a damping mechanism, a crankshaft cavity is provided in the shell, the rotating shaft is rotatably arranged in the crankshaft cavity, the elastic mechanism and the damping mechanism are both arranged in the shell, and the elastic mechanism acts on the rotating shaft to compress and store energy for the rotating shaft when the rotating shaft rotates to open the door, so that the elastic mechanism provides a return force for the rotating shaft when the rotating shaft rotates to close the door, and the damping mechanism acts on the rotating shaft to provide a buffering reaction force and offset the return force of the elastic mechanism when the rotating shaft closes the door, characterized in that: the crankshaft cavity passes through the shell in the vertical direction, and the two end portions of the rotating shaft are respectively provided with a first connecting groove and a second connecting groove, both of which are flat key structures, and a latch is provided on the mounting seat, and the latch is adapted to the first connecting groove and the second connecting groove, so that the latch is matched and plugged into the first connecting groove or the second connecting groove.

[0006] Furthermore, it also includes a fixing screw, a screw hole is opened at the center of the end of the pin, a through hole is set between the first connecting groove and the second connecting groove, and the fixing screw passes through the through hole and is connected with the screw hole.

[0007] Furthermore, the two ends of the rotating shaft are respectively provided with a first cover plate and a second cover plate, and the two ends of the rotating shaft are respectively rotatably provided on the first cover plate and the second cover plate, and the upper and lower sides of the shell are respectively provided with grooves adapted to the first cover plate and the second cover plate.

[0008] Furthermore, a cam is provided in the middle of the rotating shaft, and the cam is arranged in a triangular shape, including a top pressing portion protruding from the front end, a positioning platform at the rear end, sliding planes symmetrically arranged on both sides, and a compression platform extending outward from the sliding planes. The elastic mechanism includes a first push block, and the damping mechanism includes a second push block. In the closed state, the top pressing portion abuts against the second push block, and the positioning platform abuts against the first push block. In the open state, the sliding plane abuts against the second push block, and the compression platform abuts against the first push block.

[0009] Furthermore, chamfers are arranged between the pressing portion and the sliding plane, and between the positioning platform and the compression platform. The first push block has a limiting groove toward the cam, and both side edges of the limiting groove are inclined. The second push block has a protrusion toward the cam.

[0010] Furthermore, the elastic mechanism also includes a spring member, a top plate, an adjusting top screw and a first end cover. Two spring members are provided and distributed horizontally. The two ends of the spring member are respectively abutted against the first push block and the top plate. The adjusting top screw is screwed and passes through the first end cover, and the end of the adjusting top screw is abutted against the top plate. The first end cover is fixed to the left end of the outer shell.

[0011] Furthermore, the damping mechanism also includes a damper, an actuator, a follower, an adjusting screw and a second end cover. Two dampers are provided and distributed horizontally. The two ends of the damper are respectively abutted against the second push block and the follower. The connection between the follower and the actuator is provided with a guide ramp structure. The adjusting screw passes through and is threadedly connected to the actuator. The rotating end of the adjusting screw is rotatably set on the outer shell, and the second end cover is fixed to the right end of the outer shell.

[0012] Furthermore, the upper and lower sections of the rotating shaft form a rotating portion through a middle cam, a sliding bearing is installed on the rotating portion, and the rotating shaft is rotatably arranged in the crankshaft cavity through the sliding bearing.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: by respectively providing a first connecting groove and a second connecting groove at the two end portions of the rotating shaft, during the installation of the door closing device, the pin of the mounting seat can be respectively inserted into the first connecting groove or the second connecting groove, and then the fixing screw is passed through the central through hole of the rotating shaft to connect with the pin, so that the pin and the rotating shaft are fixedly connected together; the door closing device does not need to be divided into the upper and lower front and back sides during installation, and can be installed on the mounting seat in both directions, and then the mounting seat is connected with other connecting mechanisms, which not only facilitates the installation of the door closing device, but also improves the installation flexibility; and the first connecting groove and the second connecting groove are both flat key structures, which improves the connection stability between the mounting seat and the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of a top view in the present invention.

[0016] Figure 3 for Figure 2 Schematic cross-sectional view at AA in the middle.

[0017] Figure 4 It is a schematic diagram of a side view perspective in the present invention.

[0018] Figure 5 for Figure 4 Schematic cross-sectional view at CC in the middle.

[0019] Figure 6 for Figure 4 Schematic cross-sectional view at DD in the middle.

[0020] Figure 7 It is a structural schematic diagram of the connection state of the mounting base in the utility model.

[0021] Figure 8 It is a schematic diagram of the explosion structure in the utility model.

[0022] In the figure: the outer shell 10, the crankshaft cavity 101, the groove 102, the first cover plate 110, the second cover plate 120, the rotating shaft 20, the cam 201, the pressing part 202, the positioning platform 203, the sliding plane 204, the compression platform 205, the first connecting groove 210, the second connecting groove 220, the mounting seat 30, the latch 301, the screw hole 302, the elastic mechanism 40, the first push block 401, the spring member 402, the top plate 403, the adjusting top screw 404, the first end cover 405, the damping mechanism 50, the second push block 501, the damper 502, the actuator 503, the follower 504, the adjusting screw 505, the second end cover 506, the fixing screw 60, and the sliding bearing 70. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] like Figures 1 to 8 A two-way door closing device is shown, comprising a housing 10, a rotating shaft 20, a mounting seat 30, an elastic mechanism 40 and a damping mechanism 50;

[0025] Specifically, a crankshaft cavity 101 is vertically provided in the housing 10, and the crankshaft cavity 101 passes through the housing 10 in the vertical direction. The first connecting groove 210 and the second connecting groove 220 are respectively provided at both ends of the rotating shaft 20, and the first connecting groove 210 and the second connecting groove 220 are both flat key structures. A latch 301 is provided on the mounting seat 30, and the latch 301 is adapted to the first connecting groove 210 and the second connecting groove 220, so that the latch 301 is plugged into the first connecting groove 210 or the second connecting groove 220.

[0026] In addition, a fixing screw 60 is included, a screw hole 302 is opened at the center of the end of the latch 301, a through hole is set between the first connecting groove 210 and the second connecting groove 220, and the fixing screw 60 passes through the through hole and is connected with the screw hole 302; to be precise, the rotating shaft 20 is used as a rotating transmission structure, and the first connecting groove 210 and the second connecting groove 220 are respectively provided at the ends of the rotating shaft 20. During the installation of the door closing device, the latch 301 of the mounting seat 30 can be respectively plugged into the first connecting groove 210 or the second connecting groove 220. The second connecting groove 220 is then connected to the latch 301 through the central through hole of the rotating shaft 20 by means of a fixing screw 60, so that the latch 301 is fixedly connected to the rotating shaft 20; the door closing device does not need to be divided into the upper and lower front and back sides during installation, and can be installed on the mounting seat 30 in both directions, and then the mounting seat 30 is connected to other connecting mechanisms, which not only facilitates the installation of the door closing device, but also improves the installation flexibility; and the first connecting groove 210 and the second connecting groove 220 are both flat key structures, which improves the connection stability between the mounting seat 30 and the rotating shaft 20.

[0027] Specifically, the two ends of the rotating shaft 20 are respectively provided with a first cover plate 110 and a second cover plate 120, and the two ends of the rotating shaft 20 are respectively rotatably arranged on the first cover plate 110 and the second cover plate 120, and the upper and lower sides of the outer shell 10 are respectively provided with grooves 102 adapted to the first cover plate 110 and the second cover plate 120; to be precise, after the rotating shaft 20 is installed in the crankshaft cavity 101, the first cover plate 110 and the second cover plate 120 are respectively installed on the outer shell 10, so that the installation of the rotating shaft 20 is convenient, and the first cover plate 110 and the second cover plate 120 are respectively installed in the adapted grooves 102, so that the first cover plate 110 and the second cover plate 120 are consistent with the surface of the outer shell 10, thereby improving the aesthetics; it should be understood that one of the first cover plate 110 and the second cover plate 120 can be omitted, and a through groove is opened in the outer shell 10, so that one end of the rotating shaft 20 is rotatably arranged in the through groove.

[0028] Specifically, a cam 201 is provided at the middle of the rotating shaft 20, and the cam 201 is arranged in a triangular shape, including a top pressing portion 202 protruding from the front end, a positioning platform 203 at the rear end, sliding planes 204 symmetrically arranged on both sides, and a compression platform 205 extending outward from the sliding planes 204. The elastic mechanism 40 has a first push block 401, and the damper has a second push block 501. In the closed state, the top pressing portion 202 abuts against the second push block 501, and the positioning platform 203 abuts against the first push block 401. In the open state, the sliding plane 204 abuts against the second push block 501, and the compression platform 205 abuts against the first push block 401.

[0029] As in the above structure, two cavities are provided on both sides of the crankshaft cavity 101, and the elastic mechanism 40 and the damping mechanism 50 are respectively provided in the two cavities on both sides of the crankshaft cavity 101;

[0030] The elastic mechanism 40 further includes a spring member 402, a top plate 403, an adjusting top screw 404 and a first end cover 405. Two spring members 402 are provided and are horizontally distributed in the cavity. The two ends of the spring member 402 are respectively in contact with the first push block 401 and the top plate 403. The adjusting top screw 404 is screwed and passes through the first end cover 405, and the end of the adjusting top screw 404 is in contact with the top plate 403. The first end cover 405 is fixed to the left end of the housing 10. It should be understood that when the spring member 402 acts on the rotating shaft 20 through the first push block 401, the spring member 402 is compressed to store energy when the rotating shaft 20 rotates to open the door, and provides a return force for the rotating shaft 20 when the rotating shaft 20 rotates to close the door. In addition, the user adjusts the torque of the spring member 402 by twisting the adjusting top screw 404, and indirectly adjusts the return force of the rotating shaft 20 provided by the spring member 402, thereby adjusting the closing speed.

[0031] The damping mechanism 50 also includes a damper 502, an actuating member 503, a driven member 504, an adjusting screw 505 and a second end cover 506. The damper 502 is provided with two and is horizontally distributed. The two ends of the damper 502 are respectively in contact with the second push block 501 and the driven member 504. The connection between the driven member 504 and the actuating member 503 is provided with a guiding inclined surface structure. The adjusting screw 505 penetrates and is threadedly connected with the actuating member 503. The rotating end of the adjusting screw 505 is rotatably provided on the housing 10. The second end cover 506 is fixed to the right end of the housing 10. It should be understood that when the rotating shaft 20 rotates, When closing the door, the damper 502 acts on the rotating shaft 20 through the second push block 501, providing a buffering reaction force when the rotating shaft 20 is closing the door, and offsetting the return force of the elastic mechanism 40; in addition, the user drives the actuator 503 by twisting the adjusting screw 505. During the movement, the actuator 503 pushes the follower 504 through the guide ramp structure, so that the follower 504 pushes the damper 502 and the second push block 501, thereby adjusting the damping force of the rotating shaft 20 by the damper 502, thereby adjusting the door closing speed and the door closing damping force. The user can adjust the door closing speed and the door closing damping according to needs.

[0032] Specifically, chamfers are provided between the pressing portion 202 and the sliding plane 204, and between the positioning platform 203 and the compression platform 205. A limiting groove is provided on the first push block 401 toward the cam 201, and both side edges of the limiting groove are inclined. Through this structure, the friction force of the rotating shaft 20 during rotation can be reduced when the door is opened and closed, thereby reducing noise. The second push block 501 is provided with a protrusion toward the cam 201 to prevent the second push block 501 and the rotating shaft 20 from causing loss after long-term friction, thereby affecting the normal operation of the damper 502.

[0033] Specifically, the upper and lower sections of the rotating shaft 20 form a rotating portion through the middle cam 201, and a sliding bearing 70 is installed on the rotating portion. The rotating shaft 20 is rotatably arranged in the crankshaft cavity 101 through the sliding bearing 70. This structure can ensure the rotation stability of the rotating shaft 20 in the crankshaft cavity 101.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-way door closing device, characterized in that: The invention comprises a housing (10), a rotating shaft (20), a mounting seat (30), an elastic mechanism (40) and a damping mechanism (50), wherein a crankshaft cavity (101) is provided in the housing (10), the rotating shaft (20) is rotatably arranged in the crankshaft cavity (101), the elastic mechanism (40) and the damping mechanism (50) are both arranged in the housing (10), and the elastic mechanism (40) acts on the rotating shaft (20) to compress and store energy when the rotating shaft (20) rotates to open the door, so that the elastic mechanism (40) provides a return force for the rotating shaft (20) when the rotating shaft (20) rotates to close the door, and the damping mechanism (50) acts on the rotating shaft (20) to compress and store energy when the rotating shaft (20) rotates to open the door. 0) During the door closing process, in order to provide a buffer reaction force and offset the return force of the elastic mechanism (40), it is characterized in that: the crankshaft cavity (101) passes through the shell (10) in the vertical direction, and the two end portions of the rotating shaft (20) are respectively provided with a first connecting groove (210) and a second connecting groove (220), and the first connecting groove (210) and the second connecting groove (220) are both flat key structures. A latch (301) is provided on the mounting seat (30), and the latch (301) is adapted to the first connecting groove (210) and the second connecting groove (220), so that the latch (301) is plugged into the first connecting groove (210) or the second connecting groove (220).

2. A two-way door closing device according to claim 1, characterized in that: It also includes a fixing screw (60), a screw hole (302) is opened at the center of the end of the latch (301), a through hole is set between the first connecting groove (210) and the second connecting groove (220), and the fixing screw (60) passes through the through hole to cooperate with the screw hole (302) to connect.

3. A two-way door closing device according to claim 1, characterized in that: The two ends of the rotating shaft (20) are respectively provided with a first cover plate (110) and a second cover plate (120), and the two ends of the rotating shaft (20) are respectively rotatably arranged on the first cover plate (110) and the second cover plate (120), and the upper and lower sides of the housing (10) are respectively provided with grooves (102) adapted to the first cover plate (110) and the second cover plate (120).

4. A two-way door closing device according to claim 1, characterized in that: A cam (201) is arranged at the middle of the rotating shaft (20). The cam (201) is arranged in a triangular shape and comprises a pressing portion (202) protruding at the front end, a positioning platform (203) at the rear end, sliding planes (204) symmetrically arranged on both sides, and a compression platform (205) extending outward from the sliding planes (204). The elastic mechanism (40) comprises a first push block (401), and the damping mechanism (50) comprises a second push block (501). In a door-closing state, the pressing portion (202) abuts against the second push block (501), and the positioning platform (203) abuts against the first push block (401); in a door-opening state, the sliding plane (204) abuts against the second push block (501), and the compression platform (205) abuts against the first push block (401).

5. A two-way door closing device according to claim 4, characterized in that: Chamfers are provided between the pressing portion (202) and the sliding plane (204), and between the positioning platform (203) and the compression platform (205); a limiting groove is provided on the first push block (401) toward the cam (201), and two side edges of the limiting groove are inclined; and a protrusion is provided on the second push block (501) toward the cam (201).

6. A two-way door closing device according to claim 1, characterized in that: The elastic mechanism (40) further comprises a spring member (402), a top plate (403), an adjusting top screw (404) and a first end cover (405). Two spring members (402) are provided and are horizontally distributed. Two ends of the spring member (402) are respectively in contact with the first push block (401) and the top plate (403). The adjusting top screw (404) is screwed and passes through the first end cover (405). The end of the adjusting top screw (404) is in contact with the top plate (403). The first end cover (405) is fixed to the left end of the housing (10).

7. A two-way door closing device according to claim 1, characterized in that: The damping mechanism (50) further comprises a damper (502), an actuating member (503), a follower (504), an adjusting screw (505) and a second end cover (506). Two dampers (502) are provided and are horizontally distributed. Two ends of the damper (502) are respectively in contact with the second push block (501) and the follower (504). A guide slope structure is provided at the connection between the follower (504) and the actuating member (503). The adjusting screw (505) penetrates through and is threadedly connected to the actuating member (503). The rotating end of the adjusting screw (505) is rotatably arranged on the outer shell (10). The second end cover (506) is fixed to the right end of the outer shell (10).

8. A two-way door closing device according to claim 1, characterized in that: The upper and lower sections of the rotating shaft (20) form a rotating portion through a middle cam (201), and a sliding bearing (70) is installed on the rotating portion. The rotating shaft (20) is rotatably arranged in the crankshaft cavity (101) through the sliding bearing (70).

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