CN2199834Y - Scroll saw - Google Patents

Abstract

The utility model relates to an electric hand-held sweep-saw used for cutting wood, plastics, metal, etc. The utility model is particularly suitable for being widely used in woodworking, decoration industry and families. The sweep-saw is composed of an electric motor, a switch, a driving device, a reciprocating lever, a knife blade and a base board cover cap which are arranged in an outer shell, and also comprises an insert arranged on the outer shell and connected with the electric motor, wherein the insert is a metal center bearing bracket which can bear rotary force to reduce the stress of the outer shell, so that the breakage and the abrasion of the outer shell are avoided; thus, the service life is prolonged, and the economic benefit is improved. The utility model is an electric tool with small size, light weight, portability and convenient and flexible use, is particularly suitable for family use, and reduces the labour intensity.

Description

Scroll saw

The utility model relates to a kind of electric tool, and particularly portable sweep-saw is used to cut timber, plastics, metal etc., is suitable for carpenter, decoration industry and family especially and is extensive use of.

If existing sweep-saw DYN dynamic its all big, the Heavy Weight of volume, can not carry, small-sized sweep-saw mostly is hand again.

What patent No. 93231502.X " desktop electric sweep-saw " provided also is that a kind of desk type electric tools is not portable, also is not suitable for family and uses.

The purpose of this utility model is to provide a kind of sweep-saw, and its volume is little, in light weight, portable, easy to use, long service life.

The utility model is achieved by the following scheme: sweep-saw is made up of motor, switch, transmission device, reciprocating lever, blade and base plate, the cover cap installed in the enclosure, also comprises being installed in the inserts that is connected with motor on the shell.

Fig. 1. structural representation of the present utility model.

Fig. 2. the center bearing bracket structural representation.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Shell (2) by plastics be cast into by each part fixedly the left and right two halves shell of cavity and reinforcement form.Cover cap (11) is made for transparent plastic, is configured on the shell (2) with tongue and groove.

Base plate (12) is screwed in the bottom of shell (2), is used for the location.Switch (1) can be single speed switch or speed-regulating switch, is contained in by the handle of shell (2) upper end.

Reciprocating lever (10) is long rectangle, and upper and lower end rigid bearing (9), bearing (9) are oiliness bearing, are clamped in the cavity of left and right two halves shell.Blade (13) is screwed end in reciprocating lever (10) by chuck, and gear (8) endoporus is embedded with copper sheathing (7).

Inserts is center bearing bracket (5), on the cuboid of two through hole is arranged, be the metalwork that embeds in left and right two halves shell cavity, a through hole is put into the ball bearing that is enclosed within on motor (14) axle, a through hole fuses by power transmission shaft (6) and gear (8).

Motor (14) shaft end gear and gear (8) engagement, roller (3) is enclosed within on the axle (4), and axle (4) is pressed into gear (8).And roller (3) external diameter constitutes transmission device movingly on reciprocating lever (10).

All part assembles, and with screw left and right two halves shell is linked to be integral body.

During use, open switch (1), motor (14) drives roller (3) by gear (8) and rotates, the reciprocating lever (10) that is connected with roller (3) becomes the rotation of roller (3) rectilinear motion of reciprocating lever (10), thereby drive blade (13) and do upper and lower motion, realize processing workpiece.

Regulate speed-regulating switch, or select different blade (13) for use, the workpiece of different materials such as timber, plastics, metal is processed with regard to available different speed.

The utility model is compared with prior art: the center bearing bracket that metalwork is arranged because of cover on the motor rotation axis, can bear rotatory force, reduce the stressed of shell, thereby can avoid fracture and the wearing and tearing of shell (plastics), namely prolonged service life, improved economic benefit, again because being that volume is little, in light weight, portable electric tool, therefore easy to use, flexible, especially suitable family uses, and reduces labor intensity.

Claims (4)

1, a kind of sweep-saw is made up of motor (14), switch (1), transmission device, reciprocating lever (10), blade (13) and the base plate (12), the cover cap (11) that are installed in the shell (2), comprises that also being installed in shell (2) goes up the inserts that is connected with motor (14).

2, sweep-saw according to claim 1 is characterized in that inserts is center bearing bracket (5), on the cuboid of two through hole is arranged, embed the metalwork in left and right two halves shell cavity.

3, sweep-saw according to claim 1, it is characterized in that the engagement of motor (14) shaft end gear and gear (8), roller (3) is enclosed within on the axle (4), and axle (4) is pressed into gear (8), and roller (3) external diameter constitutes transmission device movingly on reciprocating lever (10).

4, sweep-saw according to claim 1 and 2 is characterized in that a through hole of center bearing bracket (5) is put into the ball bearing that is enclosed within on motor (14) axle, and a through hole fuses by power transmission shaft (6) and gear (8).

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