CN2347729Y

CN2347729Y - Safety devices for saw blade guards on circular saws

Info

Publication number: CN2347729Y
Application number: CN 98206846
Authority: CN
Inventors: 张经金
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-15
Filing date: 1998-07-15
Publication date: 1999-11-10
Anticipated expiration: 2008-07-15

Abstract

A safety device for saw blade protecting cover of circular sawing machine is composed of a base, a supporting seat pivoted to said supporting seat and having a connecting plate and a Y-shaped connecting rod with a long slide slot, a top handle pivoted to said supporting seat, an upper protecting cover with a lower protecting cover, a circular fixing plate embedded in the axle center of said lower protecting cover, and a bolt passing through said long slide slot, said fixing plate, said upper protecting cover and said handle and sliding along said long slide slot. The device has the function of forcing the lower protecting cover to return and blocking the lower protecting cover from being lifted, thereby achieving the effect of safe use.

Description

The safety device of the saw blade protecting cover of circular sawing machine

The utility model relates to the safety device of the saw blade protecting cover of circular sawing machine.

Circular sawing machine is carpenter's indispensable facility, and the saw blade of traditional circular sawing machine is not established the protecting cover protective device, and is careless slightly in the use, very easily causes sudden hurt accident.The inventor creates a kind of saw blade holding protective cover device of circular sawing machine; and it is disclosed by Taiwan patent announcement 276575; as shown in Figure 1; it comprises protecting cover 30 down; Y type connecting rod 10; fixed head 35; the one interlock structure that last protecting cover 20 and pulley 21 etc. constitute; by the interlock of pulling of the top between the pulley 21 of Y type connecting rod 10 and last protecting cover 20; make the microscler chute 11 of Y type connecting rod 10 progressively guide protecting cover 30 and fixed head 35 pressure playback down; play the safety operation effect; its major defect is this time protecting cover 30 no blocking structures; started easily in the use; and lose the safeguard protection effect, and saw blade is exposed fully, cause sudden hurt accident.

The purpose of this utility model is to provide a kind of safety device of saw blade protecting cover of circular sawing machine, supporting seat side at the circular sawing machine base articulates brace and Y type connecting rod, microscler chute apical margin at Y type connecting rod is arranged with the blocking hole, protecting cover is slided in the microscler chute relatively by bolt, have the effect of forcing its playback and blocking not to start, reach purpose safe in utilization.

The purpose of this utility model is achieved in that

Major advantage of the present utility model is: owing to be arranged with the blocking hole at the apical margin of the microscler chute of the Y type connecting rod that is hubbed at the circular sawing machine base, following protecting cover slides in the microscler chute relatively by bolt, have protecting cover playback and its effect that can not start of blocking down forced, prevent down that protecting cover is started by improper, has effect safe in utilization.

Further specify below in conjunction with preferred embodiment and accompanying drawing.

Fig. 1 is the prior art constructions schematic diagram;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is the structural representation of brace of the present utility model and Y type connecting rod;

Fig. 4 is the enlarged diagram of partial structurtes of the present utility model;

Fig. 5 is a blocking action schematic diagram (part) of the present utility model.

Consult Fig. 2-Fig. 5, the utility model is articulated with brace 15 and Y type connecting rod 10 at the side of the supporting seat 42 of circular sawing machine base 40, microscler chute 11 terminal apical margin appropriate locations at Y type connecting rod 10 are arranged with blocking hole 12, supporting seat 42 apical margins by 21 be pivoted handle 25 and saw blade 50 on protecting cover 20, protecting cover 20 relative positions are provided with down protecting cover 30 on the correspondence, place, axle center at following protecting cover 30 is embedded circular fixed head 35, this circle fixed head 35 is arranged in the microscler chute 11 by bolt 36, make circular fixed head 35 and following protecting cover 30 relative sliding in the microscler chute 11, force protecting cover 30 playback down.

The utility model is arranged with the blocking hole 12 that can supply bolt 36 embedding systems at the appropriate location of microscler chute 11 terminal apical margins, when in using, upwards starting down protecting cover 30 because of improper operation, bolt 36 on its circular fixed head 35 can slide to blocking hole 12 immediately, forms the blocking phenomenon and can't will descend protecting cover 30 to start (as shown in Figure 5).Thereby improve the effect safe in utilization of circular sawing machine.

Using method of the present utility model is as follows: when the user pressed down handle 25, bolt 36 slided to supporting seat 42 along microscler chute 11, and drove lower jacket 30 and be pulled upwardly, and can saw the material operation; When handle 25 pull-ups, bolt 36 slides to the terminal apical margin of microscler chute 11, and drives protecting cover 30 covering saw blades 50 down, forms the safeguard protection effect; This moment, if bolt 36 slided in the blocking hole 12 immediately when desiring to start lower cover 30, formed the blocking phenomenon and can't will descend protecting cover to start, and prevented that sudden hurt accident from taking place.

Claims

1. A safety device for the saw blade cover of a circular saw machine, which includes a pivotal connection piece and a Y-shaped connecting rod at the side end of the support seat of the circular saw machine base. The Y-shaped connecting rod is provided with a long chute. The pivot handle on the top edge of the support base and the upper cover of the saw blade are provided with a lower cover at the relative position of the upper cover, and a circular fixing plate is embedded in the axis of the lower cover; The chute, the circular fixing plate, the lower cover, the upper cover and the handle slide along the elongated chute, which is characterized in that the top edge of the end of the elongated chute is recessed for the locking of the bolt. hole.