CN203701921U - Buffer for screen window - Google Patents

Abstract

The utility model discloses a buffer for a screen window and relates to a scroll mechanism of the screen window. The buffer for the screen window comprises a rotating shaft, a barrel and resistance rubber, a bump is arranged at the lateral surface of the tail of the rotating shaft, a small shaft is mounted at the head face of the tail, and the diameter of the small shaft is less than that of the tail; a groove matched with the bump of the lateral surface of the tail of the rotating shaft is formed in the lateral surface of the inside of the barrel, and a hole matched with the small shaft of the tail of the rotating shaft is formed in the head face of the inside of the barrel; the rotating shaft is inserted in the barrel, and the resistance rubber is mounted between the tail of the rotating shaft and the barrel. When the barrel prepares to drive the rotating shaft to rotate, the speed transmitted to the rotating shaft from the barrel is slowed due to the viscosity and elasticity of the resistance rubber, the structure is simple, and the use is facilitated.

Description

A kind of screen window snubber

Technical field

The utility model relates to the reels mechanism of screen window, refers in particular to a kind of screen window snubber.

Background technology

The reels mechanism of screen window, comprises mandrel, and the rotating cylinder that is rotationally connected of mandrel, the torsion spring arranging between mandrel and rotating cylinder, when the not used time of screen window, with hand, screen window is up mentioned artificially, and window screening is just winding on rotating cylinder under the effect of torsion spring.Winding speed is now controlled by staff completely, easily left-hand seat.If loosed one's grip, the spring of leaving is wound up on rotating cylinder window screening, and speed is excessive, can make window screening damage larger, easily damaged.As packed buffer in reels mechanism structure, the speed that window screening is wound up on rotating cylinder slows down, and both can avoid the injury that may cause the person, can also increase the application life of window screening.A kind of sliding sash with disappearing screen window with snubber of Chinese patent application, application number 201220242799.1, utilizes unidirectional damping oil bumper to cushion device, when installation, also need with sealing device, for screen window, some complexity of structure, and the use of sealing device also can be increased in cost.Chinese patent application door and window screen rolling screen snubber, application number 200820005376.1, formed by mounting groove, fulcrum, small transmission gear, large travelling gear, driver, mounting groove is sleeved on the top of fulcrum, small transmission gear is sleeved on below fulcrum, large travelling gear is also sleeved on below fulcrum, and driver is arranged on below large travelling gear.Structure is more complicated still, and parts are more, and the cost of the manufacturing is high.

Utility model content

An object of the present utility model is to propose a kind of screen window snubber simple in structure.

For achieving the above object, provide following technical scheme:

A kind of screen window snubber, comprise rotating shaft, drum and resistance glue, the periphery cross section of described rotating shaft afterbody is polymorphic structure, and described drum inner side is provided with the polymorphic structure matching with rotating shaft afterbody, rotating shaft afterbody is inserted in drum, is provided with resistance glue between rotating shaft afterbody and drum.

Further, the polymorphic structure of described rotating shaft afterbody is the convex body that is arranged on rotating shaft afterbody side axial, and the polymorphic structure of described drum inner side is the concave configuration matching with the convex body of rotating shaft afterbody side axial, to produce enough damping forces.

Preferably, described rotating shaft tail end face place is provided with little axle, and little shaft diameter is less than rotating shaft tail diameter, and described drum internal end surface is provided with the hole of matching with the aft mounted little axle of rotating shaft, to realize concentric location.

Preferably, at the inner close drum oral area of drum, place is provided with arc scrobicular ring, is provided with arc bulge loop in the arc scrobicular ring position of the corresponding drum of described rotating shaft afterbody, and arc bulge loop embeds in arc scrobicular ring.

Preferably, also comprise sealing ring, described sealing ring is arranged on the position near the arc bulge loop arranging on rotating shaft afterbody between rotating shaft and drum.

Preferably, described drum tail end is provided with protruding axle.

The beneficial effects of the utility model are:

Rotating shaft is inserted in drum, resistance glue is out of shape and is distributed between rotating shaft and drum, and in the time that drum drives rotating shaft to rotate together in advance, due to viscosity and the elasticity of resistance glue, the speed that makes drum pass to rotating shaft slows down, simple in structure, uses also very convenient.

Accompanying drawing explanation

Fig. 1 is a kind of screen window snubber sectional view of the utility model;

Fig. 2 is the pivot structure schematic diagram of a kind of screen window of the utility model snubber;

Fig. 3 is a kind of simple clutch front view;

Fig. 4 is a kind of simple clutch sectional view;

Fig. 5 is the swivel structure schematic diagram of simple clutch;

Fig. 6 is window screen scroll structural representation.

Wherein: 1, cap head 2, turn, 3, rotating shaft, 4, screw, 5, drum, 6, resistance glue, 7, reel, 8, drum support arm, 9, screen window left frame, 10, holder, 11, spring, 12, spring supporting arm, 13, screen window left frame, 14, sealing ring;

11, projection;

21, groove, 22, driving tooth;

31, shaft head, 32, rotating shaft middle part, 33, driven tooth, 34, rotating shaft afterbody, 35, little axle, 36, arc bulge loop;

51, protruding axle, 52, arc scrobicular ring.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail, to help understanding content of the present utility model.

Preferred embodiment one

As shown in Figures 1 to 6, the utility model comprises rotating shaft 3, and rotating shaft afterbody 34 sides are provided with convex body, and afterbody 34 ends are provided with little axle 35, and little axle 35 diameters are less than rotating shaft afterbody 34 diameters; Drum 5 inner side are provided with the concave configuration that the convex body that arranges with rotating shaft afterbody 34 matches, and drum 5 internal end surface are provided with the hole that the little axle 35 that arranges with rotating shaft afterbody 34 matches; Resistance glue 6 is laid in drum 5 inside, and rotating shaft 3 is inserted in drum 5, resistance glue 6 is out of shape and be distributed in rotating shaft 3 and drum 5 between.At the inner close drum oral area of drum 5, place is provided with arc scrobicular ring 52, arc scrobicular ring 52 positions at described rotating shaft afterbody 34 corresponding drums are provided with arc bulge loop 36, arc bulge loop 36 embeds in arc scrobicular ring 52, this convex-concave structure one is to make drum 5 and rotating shaft 3 relative positionings to avoid both to have axially displacement mutually, improve sealing effectiveness simultaneously, avoid dust etc. to enter impact running in drum.Having sealing ring 14 near arc bulge loop 36 positions, place that arrange on rotating shaft afterbody 34 between rotating shaft 3 and drum 5, further to improve sealing effectiveness.The tail end of drum 5 is provided with protruding axle 51, and protruding axle 51 is fixedly connected with screen window left frame 9 by drum support arm 8, and drum support arm 8 sides are flexibly connected with reel 7, and reel 7 is played a supporting role.

Rotating shaft 3 also comprises shaft head 31 and rotating shaft middle part 32, and described shaft head 31 axial centre arrange bolt hole, and described rotating shaft middle part 32 diameters are greater than shaft head 31 diameters, are provided with driven tooth 33 at rotating shaft middle part 32 near shaft head 31 1 sides.2 axial centre of turning arrange through hole, the size of through hole matches with the shaft head 31 of rotating shaft 3, an end face is provided with driving tooth 22, other end is provided with the groove 21 matching with projection 11, described groove 21 bottom surfaces are inclined-plane, groove 21 bottoms are less than the height of projection 11 to the ultimate range of end face, the difference in height on inclined-plane is greater than the tooth depth of driving tooth 22 and driven tooth 33.The driven tooth 33 arranging in rotating shaft 3 matches with the driving tooth 22 of the setting on 2 of turning, and the side expanded view of described driving tooth 22 and driven tooth 33 is that multiple right-angled triangles are in one line, and one of them acute angle summit is connected with summit, right angle; Described in the shaft head 31 of described rotating shaft 3 is set with, turn 2, and driven tooth 33 is relative with driving tooth 22.Cap head 1 axial centre arranges bolt hole, and the size of bolt hole matches with the bolt hole of the head setting of rotating shaft 3, is oppositely arranged 11, two projection 11 Central Symmetries of two projections at an end face of cap head 1.Two projections 11 that arrange on cap head 1 withstand on the bottom surface of the groove 21 on 2 of turning, and cap head 1 is sleeved on described shaft head 31 and by screw 4, cap head 1 is connected with rotary shaft body 3 and not locked.Cap head 1 side is provided with axial draw-in groove, so that by matching with the projection of reel 7 inside cap head 1 with reel 7 to can be driven synchronous rotary by reel 7.

The symmetrical structure centered by 2 of turning.Drum 5, rotating shaft 3 and turning 2 do not contact with reel 7.Said structure is arranged on the left-half of reel 7.

Be provided with spring 11 at the right half part of reel 7, spring 11 is fixedly connected with reel 7 by holder 10 near cap head 1 one end, the other end of spring 11 is fixedly connected with screen window left frame 13 by spring supporting arm 12, spring supporting arm 12 sides are flexibly connected with reel 7, and reel 7 is played a supporting role.Spring supporting arm 12 coordinates together with holder 10, by unsettled spring 11 reel 7 inside that are arranged on.

Window screening twists on reel 7.

Specific works mode

When window screening is pulled open downwards, when window screening is launched, from Fig. 3 right side or Fig. 6 upside, reel 7 is rotated counterclockwise, drive cap head 1 to rotate counterclockwise, the projection 11 arranging on cap head 1 slides into lower by the eminence of curve slope turning on 2, cap head 1 continues rotation, the contacts side surfaces of projection 11 and two grooves 21 on 2 of turning, and drive turn 2 together rotation, driving tooth 22 and the mutual stress surface of driven tooth 33 are on the inclined-plane of tooth, under the mutual thrust producing on inclined-plane, turn 2 to the 1 direction slip of cap head, driving tooth 22 is no longer contacted with driven tooth 33, cap head 1 will rotate together with not driving rotating shaft 3 with 2 the rotation of turning.Because reel 7 is fixedly connected with spring 11 one end by holder 10, the other end of spring 11 is fixedly connected with screen window left frame 13 by spring supporting arm 12, and window screening is pulled open downwards when window screening is launched, and is out of shape accumulation of energy thereby spring is rotated.

When window screening is when furling back on reel, from Fig. 3 right side or Fig. 6 upside, due to the elastic force of spring 11, reel 7 is turned clockwise, drive cap head 1 to clockwise rotate, the projection 11 arranging on cap head 1 slides into eminence by the lower of curve slope turning on 2, projection 11 withstands on to turn on 2 will turn 2 to pushing away away from cap head 1 direction, make to turn 2 driving tooth 22 gradually near the driven tooth 33 of rotating shaft 3, finally make driving tooth 22 and driven tooth 33 interlocks, cap head 1 continues rotation, the contacts side surfaces of projection 11 and two grooves 21 on 2 of turning, and drive turn 2 together rotation, turn and 2 promote the driven tooth 22 of rotating shaft 3 by driving tooth 22, reach cap head 1, turn 2 together with rotating shaft 3 rotate.Drum 5 is fixedly connected with screen window left frame 9, between drum 7 and rotating shaft 3, is provided with resistance glue 6, and resistance glue 6 has certain elasticity and viscosity, can slow down the velocity of rotation of rotating shaft 3, thereby slows down the velocity of rotation of reel 7.

Can be found out by above working method, the projection on described cap head is two, and the transmission of power is balanced and simple in structure.Also can adopt one or more.

Claims (6)

1. a screen window snubber, it is characterized in that: comprise rotating shaft (3), drum (5) and resistance glue (6), the periphery cross section of described rotating shaft afterbody (34) is polymorphic structure, described drum (5) inner side is provided with the polymorphic structure matching with rotating shaft afterbody (34), rotating shaft afterbody (34) is inserted in drum (5), between rotating shaft afterbody (34) and drum (5), is provided with resistance glue (11).

2. a kind of screen window snubber as claimed in claim 1, it is characterized in that: the polymorphic structure of described rotating shaft afterbody (34) is for being arranged on the convex body of rotating shaft afterbody (34) side axial, and the polymorphic structure of described drum (5) inner side is the concave configuration matching with the convex body of rotating shaft afterbody (34) side axial.

3. a kind of screen window snubber as claimed in claim 1, it is characterized in that: described rotating shaft afterbody (34) end is provided with little axle (35), little axle (35) diameter is less than rotating shaft afterbody (34) diameter, and described drum (5) internal end surface is provided with the hole of matching with the little axle (35) of rotating shaft afterbody (34) setting.

4. a kind of screen window snubber as claimed in claim 1, it is characterized in that: at the inner close drum oral area of drum (5), place is provided with arc scrobicular ring (52), arc scrobicular ring (52) position at the corresponding drum of described rotating shaft afterbody (34) is provided with arc bulge loop (36), and arc bulge loop (36) embeds in arc scrobicular ring (52).

5. a kind of screen window snubber as claimed in claim 1, it is characterized in that: also comprise sealing ring (14), described sealing ring (14) is arranged on the position near the upper arc bulge loop (36) arranging of rotating shaft afterbody (34) between rotating shaft (3) and drum (5).

6. a kind of screen window snubber as claimed in claim 1, is characterized in that: described drum (5) tail end is provided with protruding axle (51).