RU2208677C1 - Device for door closing - Google Patents

Abstract

FIELD: construction, applicable for door closing with provision of improved operating characteristics. SUBSTANCE: the device has a wing hinge-mounted on a frame, drive for closing and a drive link applied to the wing. The means counteracting the impact loads has a body accommodating two tightening levers meeting at the body bottom, and a rod with a spherical cap. The lever ends at the inlet to the body are hinge-mounted by means of axles. The meeting ends rest on a horizontal axle mounted on which are the limiters of rapprochement of the levers and the compression spring. The rod is fastened on the wing in a seat near the drive link. At closing of the wing the rod enters inside the body, the cap gets engageable with the levers, the springs get compressed, the pressure on the rod rises and respectively the friction of resistance to the rod motion rises too, thus counteracting the impact loads at an accelerated after-closing of the wing. EFFECT: enhanced quality. 2 cl, 4 dwg

Description

 The invention relates to construction, and in particular to devices for closing a door.

 A device for closing a door is known, comprising a pivoting sash mounted on a frame with hinges, a drive for closing the door and a drive rod attached to the sash interacting with the brake device in the form of an annular guide (AS USSR 1737089, class E 05 F 1 / 02, 1992 - prototype).

 This device does not provide shockless closing of the sash, since the pressure of the drive rod on the wall of the annular guide is small and, accordingly, the friction is insufficient to counteract the shock loads that appear when the sash is closed jerkily from wind or draft.

 In addition, when the sash is in the neutral closed position, the contact of the drive rod with the annular guide is interrupted and nothing prevents the swing of the sash under the pressure of the air.

 The objective of the invention is to provide improved performance due to the shock-free operation of the device.

 To this end, a device for closing a door, the pivoting wing of which is mounted on the frame using hinges, comprising a drive for closing the door and a drive rod attached to the sash, additionally has an anti-shock device for securing shock loads, mounted on the frame above the doorway with an inlet, including a hollow a housing, mirrored two clamping levers arranged therein, converging to the bottom of the housing formed by a cover, and a rod with a spherical tip, while one end of the clamping levers at the entrance to the housing are pivotally mounted by means of vertical axes, other converging ends at the bottom of the housing are supported movably on a horizontal axis on which a lever proximity limiter is fixed between the converging ends, compression springs are mounted between the side walls of the housing and the levers, and the rod is fixed to the sash next to the point of application of the drive rod with the possibility of rotation in the socket, entering the housing through the inlet on the bracket and the interaction of the spherical tip with the clamping levers and moving the rod into the interior of the housing and back, wherein the contacting tip arms has a friction-enhancing surface, e.g. PCB, and each clamping lever is configured resiliently, for example a leaf spring flexure or torsion springs.

 The invention is illustrated by drawings, where figure 1 shows a device for closing a door, General view; figure 2 is a longitudinal section aa in fig. 1; figure 3 is a section bB in figure 2; figure 4 shows the clamping lever in the form of a torsion spring.

 A device for closing a door comprises a pivoting flap 1 mounted on the frame 2 by hinges 3, a drive 4 for closing the door and a drive rod 5 attached to the flap, as well as an arm 6 with an inlet 7.

 The device additionally has a means of counteracting shock loads fixed above the doorway using the bracket 6.

 The specified tool includes a hollow body 8 made of a standard rectangular pipe, mirror-mounted two clamping levers 9, made converging to the bottom of the body formed by the cover 10, and the rod 11 with a spherical removable tip 12.

 Some ends of the clamping levers at the entrance to the housing are pivotally mounted by means of vertical axes 13. Other converging ends of the levers are supported movably at the bottom of the housing on the horizontal axis 14. On this axis between the converging ends is fixed the limiter 15 for approaching the levers, and springs are mounted between the side walls of the housing and the levers 16 compression.

 Each clamping lever is made springy, for example in the form of a leaf bend spring or torsion spring, shown in figure 4.

 For heavy flaps, the clamping lever can be made of steel tape.

 A rod with a removable spherical tip is fixed on the leaf near the point of application of the drive rod with the possibility of rotation in the socket 17, entering the body through the inlet on the bracket and the interaction of the spherical tip with the clamping levers while moving the rod into the interior of the case and back.

 The spherical tip in contact with the levers has a friction-increasing surface, for example made of textolite.

 A device for closing a door operates as follows.

 The pivoting flap 1, using the drive rod 5 attached to it, closes the actuator in the form of a load 4 with a spring for re-closing the flap close to the frame 2.

 Means of counteracting shock loads can work together with any drive, including manual, when the visitor closes and closes the sash behind him.

 When re-closing, the rod 11 fixed on the leaf through the inlet 7 on the bracket 6 enters the hollow body 8. The spherical tip 12 interacts with the pressing levers 9 converging to the bottom 10. As the rod moves deep into the body, the levers move apart with the tip. In this case, the springs mounted on the horizontal axis 14 are compressed. The pressure from the action of the springs on the converging levers increases, the friction of the resistance to movement of the rod gradually increases, and thus, shock loads are resisted when the shutter is closed more quickly.

 The implementation of the clamping levers springy, and a spherical tip with a friction-increasing surface helps to counteract additionally.

 In addition, the stem attached to the leaf does not require a power spring to return the stem to its original position, since the leaf itself performs this function when it is opened.

 The shutter makes a large number of displacement cycles, and with it the stock. As a result of this, the spherical tip is worn at the points of contact with the clamping levers.

 In order to make fuller use of the tip surface as a working one, for this the stem is fixed on the leaf with the possibility of rotation in the socket 17 and rotation of the tip relative to the levers for contact with other points.

 In case of significant wear of the sphere during continuous operation, the removable tip can be replaced with another.

 In the initial closed position, the sash is held at rest due to the pressing of the clamping levers to the spherical tip from the sides. The action of elastic forces along the stem on the sash is excluded. A quiet stop and damping of the oscillatory movements of the sash is ensured by the frictional force that occurs as a result of the continuous contact of the tip with spring levers.

 To ensure that the force of the drive traction and the friction force of the reaction when closing the sash are directed almost in a straight line, the rod for this is fixed on the sash next to the drive rod, which does not warp the sash, pinch it in hinges, the sash adheres to the frame throughout the perimeter is saved.

 The visitor opens the shutter by turning it about the axis of rotation. When the sash opens, the stem exits the housing. The compression springs 16 are straightened, the ends of the levers supported on the axis 14 converge to the proximity limiter 15, occupying the normal initial position symmetrically to the longitudinal axis of the housing.

 Feasibility of the claimed invention compared with the prototype is to provide improved operational characteristics of the device due to shock-free operation.

Claims (2)

 1. A device for closing a door, a pivoting sash of which is mounted on the frame using hinges, comprising a drive for closing the door and a drive rod attached to the sash, characterized in that it has an anti-shock means mounted on the frame above the doorway using an arm with an inlet loads, including a hollow body, two clamping levers placed therein, made convergent to the bottom of the body formed by a cover, and a rod with a removable spherical tip, while one ends pressure levers at the entrance to the housing are pivotally mounted by means of vertical axes, other converging ends at the bottom of the housing are movably supported on a horizontal axis on which a lever proximity limiter is fixed between the converging ends, compression springs are mounted between the side walls of the housing and the levers, and the rod is fixed to the leaf with the possibility of turning in the socket, entering the body through the inlet on the bracket and the interaction of the spherical tip with the clamping levers when moving the rod deep into Pusa and back, wherein the contacting tip arms has a friction-enhancing surface, and each clamping lever is configured resiliently.  2. The device according to p. 1, characterized in that the surface of the tip is made of PCB, and each clamping lever is made in the form of a leaf spring bend or torsion spring.

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