CN2667126Y

CN2667126Y - Hand operated antioverload worm gear case for louvre door and window

Info

Publication number: CN2667126Y
Application number: CN 200320109292
Authority: CN
Inventors: 江裕生
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-28
Filing date: 2003-10-28
Publication date: 2004-12-29
Anticipated expiration: 2013-10-28

Abstract

The utility model provides a hand operated antioverload worm gear case for louver door and window, which mainly solves the technological problem of reliability of movement component, which is characterized in that an antioverload component is arranged on ends of two drive pins arranged on end plane of a worm gear and above a linking bar. The utility model is suitable for the louver door and window of various gyrated thin plate.

Description

Manual blinds antioverloading worm gear case

Technical field:

The utility model relates to a kind of shutter door, shutter that adopts rotatable lamellae, particularly a kind of shutter door, shutter with the worm gear action.

Background technology:

Existing shutter, its structural shape is a lot, wherein with the structure of transmission thin plate, comparatively common in the modern architecture thing, this structure includes handgrip, worm-drive, assembly such as connecting rod and drive block, the supporting of handgrip is to be installed on the window frame profile, its shaft extension end is installed with worm screw, worm screw and worm gear engagement, worm-wheel shaft is to be bearing on the window frame profile, on the end face of worm gear, circumferential symmetric position is installed with two trundles, and two trundles are inserted respectively and stretched in the through hole of two connecting rods that be arranged in parallel, and trundle and through hole are and are slidingly matched, common above-mentioned through hole be positioned at length of connecting rod to the middle part, lay biographies motion block supporting on the connecting rod respectively in the through hole both sides, two bolsters on each drive block are inserted respectively and are stretched in the drive block supporting of two connecting rod correspondences, and are and are slidingly matched, form the structure of the supporting of a series of drive blocks and the parallel laying of trundle through hole on two connecting rods, on each drive block of window frame both sides correspondence, be installed with the blinds thin plate; When handgrip rotates, the rotation of worm drive worm gear, two trundles are swung around the worm gear center on the worm gear end face, thereby order about the translational motion that two connecting rods work is parallel to each other, drive block on two connecting rods is bearing in and drives drive block in the connecting rod translational motion around the corresponding rotation of himself center do, and be bearing in blinds thin plate on the drive block, thereby realize the keying function of shutter also thereupon around the swing of self center.Above-mentioned worm gear case is in operating process, each motion assembly all can produce different resistances, when this resistance is excessive (overload), the trundle of worm gear holds connecting rod, and the little connecting rod of rigidity is out of shape under overload condition, jumps out from trundle, thereby causes transmission failure, even the destruction member, be absolutely unsafe.

The utility model content:

Technical problem to be solved in the utility model is, a kind of manual blinds antioverloading worm gear case is provided, and it can make under the situation of transmission overload, still can work reliably.

The technical scheme in the invention for solving the above technical problem is: the end of two trundles on the worm gear end face is provided with antioverloading member above connecting rod.

Member includes screw and pressing plate, or is screw and packing ring.

The utility model mat antioverloading member stops the structure that connecting rod is deviate from from trundle, occurs overload in the operating process even manual blinds is opened and closed, and can guarantee that still connecting rod drives blinds thin plate normal rotation.

Description of drawings:

Fig. 1 is that the utility model axle is surveyed schematic diagram ()

Fig. 2 is that the utility model axle is surveyed schematic diagram (two).

Fig. 3 is a local enlarged diagram among Fig. 1.

Fig. 4 is a partial schematic sectional view among Fig. 3.

Fig. 5 is that another embodiment axle of the utility model is surveyed schematic diagram.

Fig. 6 is that cross-sectional schematic is cutd open by office among Fig. 5.

The specific embodiment:

With reference to Fig. 1,2, manually the thin plate mechanism for opening/closing of shutter includes handgrip 1, worm gear case 2, connecting rod 3, drive block 4, antioverloading member 5; Handgrip 1 is the power that rotates the blinds thin plate, its block bearing is to be installed on the window frame profile, the output of handgrip 1 is a shaft extension, worm gear case 2 includes worm screw, worm gear 21, worm-wheel shaft and bearing, worm screw is installed on the shaft extension of handgrip 1, also can make one with shaft extension, worm and worm wheel 21 engagements, but sliding sleeve worm gear on the worm-wheel shaft, its axle is to be fixed on the window frame, also can be worm gear and is installed with worm-wheel shaft, and the worm-wheel shaft cunning fits over the bearing of fixed window frame, above-mentioned transmission can be assembled in the casing, but also open type is arranged on window frame.

The circumferential symmetric position of end face (relative 180 °) of worm gear 21 relative connecting rods 3 is installed with two trundles 22, and trundle 22 can be fixed in worm gear 21 by its bottom screw thread, also can be affixed by tight fit, be provided with screw on the top of trundle 22.

Connecting rod 3, be arranged with two in parallel at the shutter transmission side, the middle part of two connecting rods 3 is the place, position suitably, offers the through hole 30 of two installation trundles 22, through hole 30 slightly larger in diameter are in the diameter of trundle 22, and each connecting rod 3 is installed with the supporting of a biographies motion block 4 in above-mentioned through hole 30 both sides; Drive block 4 which is provided with two bolsters, and the bolster correspondence of each drive block 4 is stretched the through hole that is located at two connecting rods, thereby forms the structure of the supporting of a series of drive blocks and the parallel laying of trundle 22 through holes on two connecting rods 3.

Antioverloading member 5, include screw 51 and pressing plate 52 (as Fig. 1,3,4), the through hole 30 of two connecting rods 3 is arranged with (as Fig. 1,4) on two trundles 22 respectively, one pressing plate 52 is provided with two through holes 520 and also is set in respectively on two trundles 22, at this moment, the connecting rod 3 after the assembling and the height summation of pressing plate 52 are slightly less than trundle 22 outer height of stretching in worm gear 21 end faces, are rotated with a screw 51 in the screw of the top of trundle 22, and the diameter of screw 51 heads is greater than the diameter of pressing plate 52 through holes; The annexation of said structure trundle 22, connecting rod 3, pressing plate 52 and screw 51 can adopt other types like mode, and its basic characteristics are to keep each member institute must satisfied movement relation each other.

Antioverloading member 5 ', also can adopt another structural concept, this structure includes screw 51 ' and packing ring 52 ' (as Fig. 5,6), be sheathed on the through hole 30 of two connecting rods 3 on two trundles 22 respectively, at this moment, the outer height of stretching in the worm gear end face of trundle 22 are slightly larger than the thickness of connecting rod 3, in the top ends of each trundle 22 packing ring 52 ' are set respectively, are rotated with screw 51 ' again in its screw.

The above-mentioned various anti-member 5 that carried, make the plane moving process in worm gear 21 drive link 3, when moving link is subjected to external force to disturb overload, though trundle 22 may produce bigger transmission power, this masterpiece is used for connecting rod 3, because in the antioverloading member 5, no matter be the pressing plate 52 that screw 51 is fixed, or the fixing packing ring 52 of screw 51 ', all limiting rod 3 is deviate from from trundle 22 reliably, thereby guarantees that manual blinds handling safety is reliable.

Claims

A kind of manual blinds antioverloading worm gear case comprises worm gear, it is characterized in that: the end of two trundles (21) on worm gear (21) end face, the top in connecting rod (3) is provided with antioverloading member (5,5 ').
2, antioverloading worm gear case according to claim 1, it is characterized in that member (5) includes screw (51) and pressing plate (52), pressing plate (52) is provided with two through holes (520), two through holes (520) kink is in two trundles (21), have screw on two trundles (21) top, two screws (51) are rotated with the screw in two trundles (21) respectively.
3, antioverloading worm gear case according to claim 1, it is characterized in that member (5 ') includes screw (51 ') and packing ring (52 '), have screw on two trundles (21) top, two screws (51 ') and packing ring (52 ') are installed in the screw of two trundles (21) respectively.