CN2373544Y

CN2373544Y - RZ device for frequency regulator of window-shades blade

Info

Publication number: CN2373544Y
Application number: CN 99206531
Authority: CN
Inventors: 陶秀枝
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-26
Filing date: 1999-03-26
Publication date: 2000-04-12
Anticipated expiration: 2009-03-26

Abstract

The utility model discloses an RZ device for a frequency regulator of a window-shades blade, which comprises a shell, a worm, a worm gear, a clutch, an elastic element, a rope pulley, etc., wherein, the worm gear is pivoted and sheathed in the shell. The worm gear is engaged with the worm, and the clutch and the elastic element are arranged between the worm and the rope pulley. The clutch is provided with two opposite crown gears, wherein, one crown gear is fixedly connected with the rope pulley, and the other crown gear and the worm are in splicing. The back side of the other crown gear is butted with the elastic element, and the two crown gear are butted and engaged with each other. The worm gear is provided with a block stop, and the two crown gears can be butted with each other, slide and rotate after the worm is butted to the block stop of the worm gear by the rotation of the rope pulley. Then the two crown gears can send out sound and return to zero. The utility model has the advantage of convenient and simple operation.

Description

Shutter blade frequency modulator clearing device

The utility model relates to a kind of shutter blade frequency modulator clearing device.

General office space and home environment cover effect of sunlight and seek a confidentiality in the interior space for making the window area without shade have a retaining, utilize the design of curtain more, and with regard to the convenience on using, the design of common utilization shutter, it roughly has two kinds of vertical and horizontal types, general window place adopts horizontal type louver, and larger area French window or glass curtain then adopt vertical blind; With regard to horizontal type louver, blade is equidistantly arranged with the ladder rope horizontal parallel that links, and make ladder rope around tying in the suitable wheel seat of angular turn, and receive an axostylus axostyle with a frequency modulator and be connected to wheel seat mutually, and the action by frequency modulator makes axostylus axostyle rotating band driving wheel seat tractive ladder rope, causes the blade upset to form to open or and the state that closes.

The frequency modulator of commonly seeing as shown in Figure 4, is to be connected with mutually with a worm screw C to establish a worm gear B in the shell block A, and place, its worm gear B axle center promptly forms perforation B1 and wears the wheel seat that joins for above-mentioned axostylus axostyle; Again, the outer end of worm screw C then can connect adjusting lever D and extend suitable length, drives worm screw C for the convenient rotation of user adjusting lever D and nibbles worm gear B; Detailed this structure of seeing, the drive form of its worm screw C is comparatively required great effort, and the design of no block between worm gear B and worm screw C, and the louver (not shown) that utilizes worm gear B institute interlock goes to and promptly stops after the dead point props up, but often overexert because of the user or in long afterwards because of the wearing and tearing slippage, causing can't block and can't make zero and the immotile phenomenon of fault; In addition, the frequency modulator of shutter also has non-ly to be adjusted with adjusting lever D, and with stay cord and pulley (rope sheave) (referring to Fig. 2-4; The utility model example) adjusts, what can skid and (be child's safety meter because of stay cord and pulley room, existing stay cord must not be closed, and be divided into two), so stay cord promptly can produce phenomenon different in size after using a period of time, restore to the original state (promptly making zero) in the excessive mode of hard draw according to present mode, but so easier wearing and tearing and fault.

The purpose of this utility model promptly is to provide a kind of shutter blade frequency modulator clearing device, causes the effect of being convenient to rezero operation to reach.

For reaching above-mentioned purpose, the utility model contains members such as housing, snail body, worm gear, clutch, flexible member and rope sheave, pivot cover worm gear in its middle shell, and wormgear engaging worm is provided with clutch and flexible member between worm screw and rope sheave, and clutch has two relative crown gears, wherein a crown gear and rope sheave are affixed, and another crown gear is then pegged graft with worm screw, and in rear side contact flexible member, the engagement that offsets of two crown gears, the then suitable block of establishing on the worm gear.When rope sheave turns to after worm screw is butted on the block of worm gear, two crown gears can support mutually and trackslip, and send the sound and make zero.

Worm screw one end has an extension rod, the extension rod sleeve is in the medium pore of crown gear, has a non-circle section on the extension rod with the sleeve flexible member, and with corresponding non-circular hole grafting on non-circle section and another crown gear, and in another crown gear rear side contact flexible member, the engagement that offsets of two crown gears is rotated another crown gear and worm screw synchronously, and only can support flexible member and slide slightly on non-circle section.

In a word, the utility model is provided with clutch and flexible member between worm screw and rope sheave, then suitablely on the wrom tooth establishes block, and thus, when rope sheave turns to after worm screw is butted on the block of wrom tooth, clutch slidably dallies and sends the sound and make zero, and it is convenient and simple for operation.

Below in conjunction with drawings and Examples, the utility model is further described.

Fig. 1 is an exploded view of the present utility model;

Fig. 2 is that the utility model combination is analysed and observe and the normal running schematic diagram;

Fig. 3 is the utility model clutch operating schematic diagram;

Fig. 4 system commonly uses the structure of product and implements illustration.

As shown in Figure 1, the utility model is a kind of shutter blade frequency modulator clearing device, contain housing 1, worm screw 2, worm gear 3, clutch 4, members such as flexible member 5 and rope sheave 6, wherein, pivot cover worm gear 3 in the housing 1, and worm gear 3 engages

worm

2,6 of worm screw 2 and rope sheaves are provided with clutch 4 and flexible member 5, and clutch 4 has two

relative crown gears

41,42, wherein a crown gear 41 is affixed with rope sheave 6, and worm screw 2 one end tools one extension rod 21 with sleeve in the medium pore 411 of crown gear 41, and on the extension rod 21 the non-circle section of tool one 211 (they being that its cross section is non-circular) with sleeve flexible member 5 (being spring shown in the figure), and with corresponding non-circular hole 421 grafting on non-circle section 211 and another crown gear 42, and supporting flexible member 5 and making two crown gears 41 in crown gear 42 rear sides, 42 engagements that offset make this crown gear 42 rotate synchronously with worm screw 2, and only can support flexible member 5 slip slightly on non-circle section 211, then fit on the worm gear 3 and establish block 31, can suitably block worm screw 2.

During enforcement, as shown in Figure 2, before block 31 does not block worm screw 2, two crown gears 41 of

clutch

4,42 are meshed, overall operation is with to commonly use product identical, but ought be as shown in Figure 3, after block 31 blocks worm screw 2, the user rotates rope sheave 6 as the pulling of the application of force again stay cord 61, then because of two

crown gears

41,42 helical teeth supports mutually, make crown gear 41 replace crown gear 42 compression elastic elements 5,, make two crown gears 41 immediately immediately because of the elastic force of flexible member 5 and the inclined-plane of helical teeth while rotating, 42 reply the form of Fig. 2, so constantly circulate and send the sound and make the user vigilant and stop, no matter and whether the user stops hand, worm screw 2 all can not continue mill with worm gear 3 to be changeed, and reaches purpose that makes zero and the effect of being convenient to operate.

Claims

1. shutter blade frequency modulator clearing device, contain members such as housing, snail body, worm gear, clutch, flexible member and rope sheave, pivot cover worm gear in its middle shell, and wormgear engaging worm, be primarily characterized in that: clutch and flexible member are set between worm screw and rope sheave, and clutch has two relative crown gears, wherein a crown gear and rope sheave are affixed, another crown gear is then pegged graft with worm screw, and in rear side contact flexible member, the engagement that offsets of two crown gears, the then suitable block of establishing on the worm gear.

2. the shutter blade frequency modulator clearing device shown in claim 1, it is characterized in that: worm screw one end has an extension rod, the extension rod sleeve is in the medium pore of crown gear, has a non-circle section on the extension rod with the sleeve flexible member, and with corresponding non-circular hole grafting on non-circle section and another crown gear, and in another crown gear rear side contact flexible member, the engagement that offsets of two crown gears.