CN108533111A - Shutdown damper - Google Patents

Abstract

A door closing damper relates to the field of damping motion of hinged fixed doors. The damper can ignore the damping effect when the door is opened, and only produces damping effect when the door is closed to control the closing speed. Consists of rods, fixed points, gears, curved chute, bolts, nuts, washers and one-way bearings. By fixing an arc-shaped chute on the door frame, the fixed point on the door leaf is connected to one end of the rod, and the other end of the rod is connected to a one-way bearing protruding from both sides of the inner ring with bolts, nuts and washers, and the outer ring of the bearing is tightly fitted with the gear. The gear is in the arc-shaped chute and engages with the teeth on the outer inner wall of the arc-shaped passage of the arc-shaped chute, and the outer ring of the bearing can only rotate clockwise relative to the inner ring. When the door is opened, the rod drives the gear to move in the passage, the gear and the outer ring of the bearing rotate clockwise, and the damping effect is small. When the door is closed, the teeth on the passage drive the gear to rotate counterclockwise, driving the inner ring of the one-way bearing and the relative rod to rotate, passing The adjusting bolt changes the friction between the inner ring of the bearing and the rod to adjust the damping.

Description

Closing damper

technical field

The invention relates to the field of damping motion of doors with fixed hinges, in particular to the transformation of partition doors.

Background technique

At present, partition doors are used in many public places to divide private spaces, such as offices and bathrooms. Partition doors are mainly made of anti-folding special versions, and hinges are used to connect the door panels and door frames to complete opening and closing. However, in order to reduce costs, the hinges generally do not have a damping effect. It is difficult for personnel to grasp the closing force during normal use, and the door panels are often closed quickly, resulting in great noise and vibration, which not only affects the user experience, but also affects the structure of the door. It will cause great damage and reduce the service life.

Contents of the invention

In order to overcome the problem that the existing hinge cannot have an effective damping mechanism to control the closing speed, the present invention provides a damper that can be added to the door, and the damper can prevent the damping effect from being triggered when the door is opened (refer to The damping is small and can be ignored), and a large damping effect is generated when the door is closed to achieve the purpose of controlling the closing speed.

The technical solution adopted by the present invention to solve its technical problems is: door closing damper, including fixed points, rods, gears, one-way bearings, bolts, nuts, washers, arc chute; One end of the arc-shaped chute, the gear moves in the arc-shaped channel on the arc-shaped chute, the arc-shaped channel is on the circle with the center of the door hinge as the center, that is, the central axis of the door hinge passes through the center of the arc-shaped channel 1. The central axis of the door hinge is perpendicular to the plane where the arc-shaped channel is located. There are teeth on the outer inner wall of the arc-shaped channel in the arc-shaped chute, and are engaged with the gears. The channel width of the arc-shaped channel is equal to the tooth on the inner wall of the channel The root of the tooth is the reference point, and the width of the gear is based on the roots on both sides, that is, the width of the gear is the diameter of the circle where the tooth root is located, and the channel width is slightly larger than the width of the gear, which is slightly larger than the finger. When sliding inside the arc-shaped passage, it is driven by the teeth on the inner wall of the arc-shaped passage and the gear cannot break away from the constraints of the teeth on the inner wall of the arc-shaped passage. The washer is connected to one end of the rod. The outer ring of the one-way bearing can only rotate clockwise relative to the inner ring. Both sides of the inner ring of the bearing protrude. The rod and the bolt are only in contact with the inner ring of the bearing. Driven by the drive, the gear moves in the channel, which is manifested as a circular motion of the gear around the door hinge. The teeth on the channel drive the gear and the outer ring of the bearing to rotate clockwise relative to the inner ring of the bearing, and the inner ring does not rotate relative to the rod. At this time, the damping effect It can be ignored; when the door is closed, the rod drives the gear to move in the reverse direction in the arc-shaped channel. Since the outer ring of the bearing cannot rotate counterclockwise relative to the inner ring of the bearing, the teeth on the inner wall of the channel on the arc-shaped channel drive the gear and the bearing as a whole to reverse the direction of the rod. Rotating clockwise, the bolt can be rotated to change the friction between the inner ring of the bearing and the rod to adjust the damping.

The beneficial effects of the present invention are: when the door is opened, the damping effect is negligibly small and does not affect the user experience; when the door is closed, the damping is relatively large, and the closing speed is slowed down, thereby reducing the closing noise. And the structure is simple.

Description of drawings

Below in conjunction with accompanying drawing, the present invention is further described;

Fig. 1 is the top view of the present invention when the door is closed;

Fig. 2 is A---A sectional view of Fig. 1;

Fig. 3 is the connection state of the present invention and partition door;

1. Arc-shaped chute, 2. Teeth on the inner wall of the channel, 3. One-way bearing, 4. Gear, 5. Bolt, 6. Bearing inner ring, 7. Bearing outer ring, 8. Nut, 9. Washer, 10 .Rod, 11. Fixing point, 12. Door frame, 13. Door leaf, 14. Door hinge, 15. Damper.

Detailed ways

In Fig. 1, one end of the arc-shaped chute 1 is fixed on the door frame 12, and the other end of the arc-shaped chute 1 is suspended. Page 14 is the center of the circle (that is, the center of the circle is on the central axis of the door hinge 14), the teeth 2 of the inner wall of the channel are on the outer inner wall of the channel (the teeth 2 of the inner wall of the channel can also be arranged on the inner inner wall of the channel), the gear 4 In the channel of the arc-shaped chute 1, the teeth 2 on the inner wall of the channel are engaged with each other, the one-way bearing 3 is tightly fitted on the gear 4, and connected with one end of the rod 10 through the bolt 5, the nut 8 and the washer 9, on the door leaf 13 Install the fixed point 11, the fixed point 11 is connected with the other end of the rod 10, with the root of the tooth 2 on the inner wall of the passage as the reference point, the width of the passage is slightly larger than the width of the gear 4 (that is, the tooth 2 on the inner wall of the passage can always be aligned with the teeth of the gear 4 That is to say, the width of the channel ensures that the gear 4 will not come out and can be engaged and rotated), so that the gear 4 can be driven to rotate by the teeth 2 on the inner wall of the channel when it slides inside.

In Fig. 2, both sides of the bearing inner ring 6 protrude, the rod 8 and the bolt 5 are only in contact with the bearing inner ring 6, the bearing inner ring 6 is inserted into the screw rod of the bolt 5, and the screw rod passes through the through hole at one end of the rod 10. The upper surface of the rod 10 first inserts the washer 9 into the screw rod to prevent the bolt 5 from loosening during work, and then the nut 4 is screwed into the threaded fixing bolt 5 of the screw rod, and the fixed degree of tightness ensures that the bearing inner ring 6 can rotate relative to the rod 8. The gear 4 is tightly fitted on the bearing outer ring 7, and the bearing outer ring 7 can only rotate clockwise relative to the bearing inner ring 6. When the gear 4 rotates clockwise, it drives the bearing outer ring 7 to rotate clockwise relative to the bearing inner ring 6. At this time ( When the door is opened), the damping effect can be ignored. When the gear 4 rotates counterclockwise, it drives the one-way bearing 3 to rotate relative to the rod 10 with the bolt 5 as the axis. The nut 7 can be twisted to adjust the tightness of the bolt 5, and the bearing inner ring 6 and the rod can be changed. 8 to adjust the damping effect.

In the embodiment shown in FIG. 3 , it should be ensured that the components of the damper 15 are placed horizontally during installation. That is, it moves in the horizontal plane, in other words, the motion trajectories of all moving parts are in the horizontal plane.

Claims (1)

1. shutdown damper, including fixed point, bar, gear, unilateral bearing, bolt, nut, washer, arc chute；Its feature It is：One end of arc chute is fixed on doorframe, gear moves in the arc-shaped channel on arc chute, and arc-shaped channel exists Using door hinge center as on the circle in the center of circle, i.e. the center of circle of the door hinge central axis by arc-shaped channel, door hinge central axis Plane where arc-shaped channel, it is with teeth on the outside inner wall in arc chute inner circle arcuation channel, and and engaged gears, The channel width in arc-shaped channel point on the basis of the tooth root of the tooth of vias inner walls, the width of gear on the basis of the tooth root of both sides, I.e. the width of gear is diameter of a circle where tooth root, and channel width is slightly larger than the width of gear, 0.2-0.5mm big slightly larger than finger, Prevent gear when arc-shaped channel interior is slided by the tooth of arc-shaped vias inner walls drive rotation and gear is from being detached from circular arc The constraint of the tooth of the vias inner walls in shape channel, the fixed gear in unilateral bearing outer ring, unilateral bearing pass through bolt, nuts and washers It is connect with one of bar, unilateral bearing outer ring can only be rotated clockwise with respect to inner ring, bearing inner race both sides protrusion, bar and bolt It is contacted with bearing inner race, fixed point is installed on door leaf, when enabling, under the drive of bar, gear moves in the channel, shows as Gear moves in a circle around door hinge, and the tooth band moving gear and bearing outer ring on channel are rotated clockwise with respect to bearing inner race, interior Circle is not rotated relative to bar, and damping action can ignore that at this time；At closing time, bar band moving gear counter motion in arc-shaped channel, Since bearing outer ring can not counterclockwise be rotated relative to bearing inner race, tooth band moving gear and the axis of the vias inner walls on arc-shaped channel Hold it is whole rotated counterclockwise relative to bar, bolt can be rotated to change the friction of bearing inner race and bar and adjust damping size.