CN113047722A

CN113047722A - Door closing buffer

Info

Publication number: CN113047722A
Application number: CN202110540581.8A
Authority: CN
Inventors: 廖瑞忠; 黃翊嘉
Original assignee: Suzhou Shengde Precise Electric Co Ltd
Current assignee: Suzhou Shengde Precise Electric Co Ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-06-29

Abstract

The invention relates to a door and window assembly, and discloses a door closing buffer, which comprises a limiting block and a buffering device; the limiting block is arranged on the door frame; the buffer device is arranged on the door panel; the limiting block is provided with a limiting track; a rack is arranged in the limiting track; the buffer device comprises a base, a sliding block, a deflector rod and a transmission rod; the base is provided with a rotating shaft and a lower track; the sliding block is hinged with the transmission rod through a rotating shaft; the deflector rod is positioned in the lower rail; one end of the lower rail is provided with a stop part; the deflector rod is movably connected with the sliding block and the transmission rod; a rotary damper matched with the rack is arranged at one end of the transmission rod, which is far away from the deflector rod; a torsion spring is arranged on the base; one end of the torsion spring is connected with the base, and the other end of the torsion spring is connected with the shifting lever. The damping device is arranged on the side, far away from the hinge, of the door plate, and kinetic energy of the door plate is eliminated through the rotary damper, so that door closing buffering is achieved.

Description

Door closing buffer

Technical Field

The invention relates to a door and window assembly, in particular to a door closing buffer.

Background

The door is closed by external drive easily when opening, and this kind of condition door plant all can the atress too big usually, leads to the door plant and door frame striking dynamics big, causes to close the door sound too big or even door plant, door frame damage. In order to prevent door closing collision and overlarge sound, a buffer device can be installed on a door or a door frame, and a spring damping shock absorber or a hydraulic buffer door closer is commonly used at present. The spring damping shock absorber reduces the impact of the door plate and the door frame in an energy absorption mode, the speed of the door plate in the closing process is not reduced actually, and the force of the door plate contacting with the spring damping shock absorber is still large; on the multi-purpose and fire prevention fire door of hydraulic cushion door closer, install the one side at the door plant hinge usually, provide the resistance through hydraulic pressure for the door plant is slowly close to the door frame when closing the door, and this kind of door closer needs very big strength gas usually just can open, and the less people of strength switch is difficult. Chinese patent publication No. CN211874224U discloses a guiding type door buffer, wherein a foldable guide rod is disposed on one side of a door panel away from a hinge, and a slope type buffer device is disposed at a corresponding position of a door frame, so that kinetic energy of the door panel is released in advance through the guide rod and the slope of the buffer device, thereby reducing impact force of the door panel on the door frame.

Disclosure of Invention

The invention solves the technical problem of providing a door closing buffer, wherein a buffer device is arranged at the side of a door panel far away from a hinge, and the kinetic energy of the door panel is eliminated through a rotary damper to realize the door closing buffer.

The technical scheme adopted by the invention for solving the technical problems is as follows: a door closing buffer comprises a limiting block and a buffer device; the limiting block is arranged on the door frame; the buffer device is arranged on the door panel; the limiting block is provided with a limiting track; a rack is arranged in the limiting track; the buffer device comprises a base, a sliding block, a deflector rod and a transmission rod; the base is provided with a rotating shaft and a lower track; the sliding block is hinged with the transmission rod through a rotating shaft; the deflector rod is positioned in the lower rail; one end of the lower rail is provided with a stop part; the deflector rod is movably connected with the sliding block and the transmission rod; a rotary damper matched with the rack is arranged at one end of the transmission rod, which is far away from the deflector rod; a torsion spring is arranged on the base; one end of the torsion spring is connected with the base, and the other end of the torsion spring is connected with the shifting lever.

Further, the method comprises the following steps: the base is provided with an adjusting screw and an adjusting block; one end of the torsion spring is connected with the adjusting block.

Further, the method comprises the following steps: the adjusting block is provided with a threaded through hole; the adjusting screw is screwed into the threaded through hole of the adjusting block.

Further, the method comprises the following steps: the limiting rail is not parallel to the beam of the door frame.

Further, the method comprises the following steps: the buffer device further comprises a stabilizing block.

Further, the method comprises the following steps: the stabilizing block is arranged on the base through a plurality of positioning pins; the stabilizing block is provided with an upper track; the upper track and the lower track are consistent in structure.

Further, the method comprises the following steps: the upper end of the deflector rod extends into the upper rail.

Further, the method comprises the following steps: the shifting rod is provided with a shifting sheet; the sliding block is provided with a blind hole; the shifting piece is provided with a connecting pin; the connecting pin is inserted into the blind hole of the sliding block.

Further, the method comprises the following steps: one end of the transmission rod, which is close to the deflector rod, is provided with a transmission notch; the shifting rod is clamped in the transmission notch.

Further, the method comprises the following steps: the buffer device also comprises a long magnet and a short magnet; the long magnet is arranged on the stabilizing block; the short magnets are arranged on the limiting blocks; the long and short magnets attract each other.

The invention has the beneficial effects that: the motion trail of the transmission rod is limited through the limiting track, and the kinetic energy of the door plate is offset through the rotary damper. The driving rod drives the shifting rod to move in the lower track, after the door panel is closed, the shifting rod is clamped at one end of the track by the elasticity provided by the torsion spring, and the shifting rod clamps the driving rod, so that the door panel can be prevented from rebounding after being closed; the long magnet and the short magnet attract each other to provide a pulling force for closing the door when the door plate is close to the door frame. After the door is opened, the deflector rod is clamped in the blocking part, so that the deflector rod can be prevented from being pushed back to the other end of the track by the torsion spring, and the transmission rod is prevented from deviating, so that the bearing can not be inserted into the limiting track when the door is closed. One end of the torsion spring is connected with the adjusting block, the position of the adjusting block can be controlled through the adjusting screw, the adjustment of the elasticity of the torsion spring is realized, and the damage of the excessive elasticity of the torsion spring to the balance of the buffer supporting rod is avoided; the limit track is not parallel to the doorframe beam, so that a bearing on the transmission rod can conveniently slide into the track, and the thrust required by door opening can be reduced; the upper track on the stabilizing block and the lower track on the base form a double-layer track for limiting the movement of the deflector rod, so that the movement stability of the deflector rod can be improved, and the stability of the buffer is improved.

Drawings

FIG. 1 is a schematic view of a door closer bumper installation;

FIG. 2 is an exploded view of a cushioning device;

FIG. 3 is a schematic view of a base structure;

FIG. 4 is a schematic view of the door in an open state;

FIG. 5 is a schematic view of a closed state;

fig. 6 is a schematic view showing a positional relationship between a long magnet and a short magnet.

Labeled as: 1. a door frame; 11. a door panel; 2. a limiting block; 21. a limiting track; 22. a rack; 3. a buffer device; 301. a long magnet; 302. a short magnet; 31. a base; 311. adjusting screws; 32. a lower rail; 321. a stopper portion; 33. a torsion spring; 331. an adjusting block; 34. a slider; 35. a deflector rod; 351. a shifting sheet; 36. a transmission rod; 361. a rotary damper; 362. a drive notch; 37. a rotating shaft; 38. a stabilizing block; 381. and (4) an upper rail.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

Examples

As shown in fig. 1 to 3, a door closing buffer comprises a limiting block 2 and a buffer device 3; the limiting block 2 is arranged on the door frame 1; the buffer device 3 is arranged on the door panel 11; the method is characterized in that: the limiting block 2 is provided with a limiting track 21; a rack 22 is arranged in the limiting track 21; the buffer device 3 comprises a base 31, a slide block 34, a shift lever 35 and a transmission rod 36; the base 31 is provided with a rotating shaft 37 and a lower rail 32; the slide block 34 is hinged with the transmission rod 36 through a rotating shaft 37; the shift lever 35 is positioned in the lower rail 32; a stopper 321 is disposed at one end of the lower rail 32; the shift lever 35 is movably connected with the slide block 34 and the transmission rod 36; a rotary damper 361 matched with the rack 22 is arranged at one end of the transmission rod 36 away from the shifting rod 35; a torsion spring 33 is arranged on the base 31; one end of the torsion spring 33 is connected with the base 31, and the other end is connected with the shift lever 35.

On the basis, the base 31 is provided with an adjusting screw 311 and an adjusting block 331; one end of the torsion spring 33 is connected with the adjusting block 331.

On the basis, the adjusting block 331 is provided with a threaded through hole; the adjusting screw 311 is screwed into the threaded through hole of the adjusting block 331.

On the basis of the above, the limit rail 21 is not parallel to the cross beam of the door frame 1.

On the basis of the above, the buffer device 3 further comprises a stabilizing block 38.

On the basis of the above, the stabilizing block 38 is mounted on the base 31 through a plurality of positioning pins; the stabilizing block 38 is provided with an upper rail 381; the upper rail 381 is identical in structure to the lower rail 32.

On the basis, the upper end of the shift lever 35 extends into the upper rail 381.

On the basis, the shift lever 35 is provided with a shift sheet 351; a blind hole is formed in the sliding block 34; the shifting piece 351 is provided with a connecting pin; the connecting pin is inserted into a blind hole in the slider 34.

On the basis, one end of the transmission rod 36 close to the shift lever 35 is provided with a transmission notch 362; the shift lever 35 is engaged in the transmission notch 362.

In addition, as shown in fig. 6, the buffer device 3 further includes a long magnet 301 and a short magnet 302; the long magnet 301 is arranged on the stabilizing block 38; the short magnet 302 is arranged on the limiting block 2; the long magnet 301 and the short magnet 302 attract each other. When the door panel 11 approaches the doorframe 1, the long magnet 301 and the short magnet 302 attract each other to provide a pulling force for closing the door, thereby preventing the door from being closed untight.

In the initial state, as shown in fig. 5, the door is in the closed state, and the rotational damper 361 is located in the limit rail 21, and the torsion spring 33 clamps the lever 35 on the side of the lower rail 32 and the upper rail 381 close to the door frame. When the door panel 11 is opened, the first stage is a door just opened state, as shown in fig. 4, in the process, the door panel 11 is subjected to a pushing force, the pushing force is transmitted to the shift lever 35 through the transmission rod 36, so that the shift lever 35 slides along the lower rail 32 and the upper rail 381 against the elastic force of the torsion spring 33, and the rotary damper 361 slides outwards along the limit rail 21 and the rack 22; when the shift lever 35 slides to the stopper 321 and is clamped in the stopper 321, the rotary damper 361 is just separated from the limit rail 21, the buffer support rod 39 is extended to the maximum, and since the shift lever 35 is clamped in the stopper 321, the torsion spring 33 cannot shift the shift lever 35 back to the other end of the lower rail 32 and the upper rail 381, and the buffer device 3 will always maintain the current state without external force, i.e. the shift lever 35 is clamped in the stopper 321. When the door panel 11 is closed, before the door panel 11 contacts the doorframe 1, the rotary damper 361 slides into the position-limiting track 21, so that the transmission rod 36 rotates along the rotating shaft 37, the transmission rod 36 pulls the shift lever 35 out of the stop 321, and the shift lever 35 slides to one end of the lower track 32 and the upper track 381 close to the doorframe 1, thereby completing the door closing action; during the door closing action, the rotary damper 361 moves along the limit track 21 and the rack 22, and the force used for closing the door is counteracted through the damping of the rotary damper 36, so that the door closing buffering is realized.

The elastic force of the torsion spring 33 can be adjusted by the adjusting screw 311, and the compression state of one end of the torsion spring 33 can be changed by rotating the adjusting screw 311 to change the position of the adjusting block 331, so that the elastic force of the other end of the torsion spring 33 can be changed.

The above embodiments should not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent transformations fall within the protection scope of the present invention.

Claims

1. A door closing buffer comprises a limiting block (2) and a buffer device (3); the limiting block (2) is arranged on the door frame (1); the buffer device (3) is arranged on the door panel (11); the method is characterized in that: a limiting track (21) is arranged on the limiting block (2); a rack (22) is arranged in the limiting track (21); the buffer device (3) comprises a base (31), a sliding block (34), a shifting rod (35) and a transmission rod (36); the base (31) is provided with a rotating shaft (37) and a lower rail (32); the sliding block (34) is hinged with the transmission rod (36) through a rotating shaft (37); the deflector rod (35) is positioned in the lower rail (32); one end of the lower rail (32) is provided with a stop part (321); the shift lever (35) is movably connected with the slide block (34) and the transmission rod (36); a rotary damper (361) matched with the rack (22) is arranged at one end of the transmission rod (36) far away from the shifting rod (35); a torsion spring (33) is arranged on the base (31); one end of the torsion spring (33) is connected with the base (31), and the other end of the torsion spring is connected with the deflector rod (35).

2. A door closer damper according to claim 1, wherein: the base (31) is provided with an adjusting screw (311) and an adjusting block (331); one end of the torsion spring (33) is connected with the adjusting block (331).

3. A door closer damper according to claim 2, wherein: the adjusting block (331) is provided with a threaded through hole; the adjusting screw (311) is screwed into the threaded through hole of the adjusting block (331).

4. A door closer damper according to claim 1, wherein: the limiting rail (21) is not parallel to a beam of the door frame (1).

5. A door closer damper according to claim 1, wherein: the damping device (3) further comprises a stabilizing block (38).

6. A door closer damper according to claim 5, wherein: the stabilizing block (38) is arranged on the base (31) through a plurality of positioning pins; an upper rail (381) is arranged on the stabilizing block (38); the upper rail (381) is consistent with the lower rail (32) in structure.

7. A door closer damper according to claim 6, wherein: the upper end of the deflector rod (35) extends into the upper rail (381).

8. A door closer damper according to claim 1, wherein: a shifting piece (351) is arranged on the shifting lever (35); the sliding block (34) is provided with a blind hole; the shifting piece (351) is provided with a connecting pin; the connecting pin is inserted into a blind hole of the sliding block (34).

9. A door closer damper according to claim 1, wherein: one end of the transmission rod (36) close to the shifting rod (35) is provided with a transmission notch (362); the shifting lever (35) is clamped in the transmission notch (362).

10. A door closer damper according to claim 1, wherein: the buffer device (3) further comprises a long magnet (301) and a short magnet (302); the long magnet (301) is arranged on the stabilizing block (38); the short magnet (302) is arranged on the limiting block (2); the long magnet (301) and the short magnet (302) attract each other.