CN2892918Y - Double-needle machine push plate with perspective viewing hole - Google Patents

Abstract

The utility model relates to a dual-pin machine pushing board with a transparent window, comprising a pushing board body and a transparent board, wherein the pushing board body is provided with a through hole in which the transparent board can be arranged; the around of the transparent board and the around of the pushing board body; the pushing board is arranged with a pressing ring; a screw is through the pressing ring to fix the pushing board body and the transparent board. As the screw is adopted to pierce the pressing ring and fix the pushing board body and the transparent board, the glue is prevented from making the transparent window dirty; a space can be reserved between the two step faces to avoid the effect of expansion and contraction. Thus the transparent board of the pushing board is not easy to drop and the replacement is more convenient.

Description

The double needle machine push pedal of band perspective window

Technical field:

The utility model relates to the Sewing machines accessory, particularly the double needle machine push pedal of band perspective window.

Background technology:

The structure of the double needle machine push pedal of original band perspective window as shown in Figure 1 to Figure 3, push pedal body 1 is a ferrous material, the left side has a circular hole; Perspective board 2 is made disc by resin material or glass material, and the limit, hole of push pedal body 1 and the web of perspective board 2 respectively are shaped on the step of concavo-convex cooperation.Put on the skin at two step surfaces with glue, perspective board 2 is fixed on push pedal body 1 circular hole place.Push pedal is different with the perspective board material, and both rates of expanding with heat and contract with cold are different, and adhesive part is peeled off easily; Push pedal body 1 and perspective board 2 contacts area are less, are vibrated when adding Sewing machines work, and coming off often appears in perspective board 2.In the taping process, very easily glue is adhered to perspective board, influence its outward appearance and transparency.Perspective board is in work top, is subjected to the friction of sewing for a long time, and the fineness of its plate face is reduced, and causes perspective plane fuzzy, can't spy on, and just needs the change perspective board, because perspective board is connected by glue with push pedal, it is pretty troublesome to change perspective board.

The utility model content:

The purpose of this utility model provides a kind of perspective board and not only is difficult for coming off but also change double needle machine push pedal easily.

Scheme of the present utility model is: comprise push pedal body and perspective board, the push pedal body has the through hole that perspective board can be installed, perspective board periphery and push pedal body apertures limit respectively are shaped on the step of concavo-convex cooperation, and the push pedal back side is provided with compacting ring, and screw passes compacting ring fixedly push pedal body and perspective board.

Screw is installed in push pedal body and perspective board interface, also screw can be installed in push pedal body and the perspective board interface outside.

The utility model has the advantages that:, avoided the bonding of glue and pickup perspective window owing to adopted screw to pass compacting ring fixedly push pedal body and perspective board; Two step surfaces can leave the space, can not be affected by thermal expansion and contraction, thereby the perspective board difficult drop-off of above-mentioned push pedal, and change conveniently.

Description of drawings:

Fig. 1 is original push pedal front view.

Fig. 2 is the A-A direction cutaway view of Fig. 1.

Fig. 3 is the C place enlarged drawing of Fig. 2.

Fig. 4 is the utility model rearview.

Fig. 5 is the B-B direction cutaway view of Fig. 4.

Fig. 6 is the D place enlarged drawing of Fig. 5.

Fig. 7 is the enlarged drawing of another embodiment.

The specific embodiment:

With reference to Fig. 4 and Fig. 5, the limit, hole of push pedal body 1 and the periphery of perspective board 2 respectively are shaped on the step of concavo-convex cooperation, the step on limit, push pedal body 1 hole is shaped on the front side, the step of the web of perspective board 2 is built in rear side, perspective board 2 can be installed from push pedal body 1 rear side, because step resistance shelves, perspective board 2 can not pass from push pedal body 1 front side.

Circular ring metal compacting ring 4 is installed in the push pedal rear side, and annulus just covers push pedal body 1 and perspective board 2 interfaces, and it is fixing with push pedal body 1 and perspective board 2 that screw 3 passes compacting ring 4.

With reference to Fig. 6, screw 3 passes compacting ring 4 nails at push pedal body 1 and perspective board 2 boundary step surfaces, and push pedal body 1, perspective board 2 and compacting ring 4 are linked together.Three screws 3 are evenly distributed on the circumference of interface composition.

With reference to Fig. 7, screw 3 passes compacting ring 4 nails in the push pedal body 1 and the perspective board 2 interfaces outside, and perspective board 2 is clamped in push pedal body 1 and the compacting ring 4.

The perforate of push pedal body 1 and corresponding perspective board 2 can be made into other geometries such as rectangle, triangle, ellipse.

The double needle machine push pedal of the band perspective window of said structure has been avoided the bonding of glue and pickup perspective window; Two step surfaces can leave the space, can not be affected by thermal expansion and contraction, so perspective board 2 difficult drop-offs of this push pedal, only the need rotation is unloaded screw and can be changed perspective board 2, and is very convenient.

Claims (3)

1, the double needle machine push pedal of band perspective window, comprise push pedal body (1) and perspective board (2), push pedal body (1) has the through hole that perspective board (2) can be installed, perspective board (2) periphery and push pedal body (1) limit, hole respectively are shaped on the step of concavo-convex cooperation, it is characterized in that the push pedal back side is provided with compacting ring (4), screw (3) passes compacting ring (4) fixedly push pedal body (1) and perspective board (2).

2, the double needle machine push pedal of band perspective window according to claim 1 is characterized in that screw (3) is installed in push pedal body (1) and perspective board (2) interface.

3, the double needle machine push pedal of band perspective window according to claim 1 is characterized in that screw (3) is installed in the push pedal body (1) and perspective board (2) the interface outside.

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