CN203140888U

CN203140888U - Protective lock device of electric circular saw

Info

Publication number: CN203140888U
Application number: CN 201320200220
Authority: CN
Inventors: 林文清
Original assignee: ZHEJIANG SHENMAO INSTRUMENT CO Ltd
Current assignee: Qingdao Youpu Commerce And Trade Co ltd
Priority date: 2013-04-19
Filing date: 2013-04-19
Publication date: 2013-08-21
Anticipated expiration: 2023-04-19

Abstract

The utility model discloses a protective lock device of an electric circular saw. The device comprises a body (3), a bottom plate (2), a saw blade shield (1), a handle (4), a power switch (5), a switch button (6) and a depth gauge (17), wherein a linkage push rod (12) is hinged to the inside of the handle (4); a shifting rod (13) is hinged to the body (3); an exposed push button (9) is formed at the front end of the linkage push rod (12); a lock plate (10) is arranged in the middle of the linkage push rod (12); the lock plate (10) is buckled with a spring bolt (8) on the switch button (6); the tail end of the linkage push rod (12) is linked with the front end of the shifting rod (13); a push rod reset spring (21) is arranged at the tail end of the linkage push rod (12); the rear end of the shifting rod (13) is intersected with the leaning end surface (16) of the depth gauge (17); and a shifting rod reset spring (11) is arranged on the shifting rod (13). After adopting the structure, the device has the advantages of simple and reasonable structure, convenience in operation and use, high operating efficiency, safety and reliability in use and the like.

Description

Electric circular saw Protective lock device

Technical field

The utility model relates to a kind of safety guard, particularly a kind of electric circular saw Protective lock device that links with power switch.

Background technology

Electric circular saw be a kind of be power with the series machine, drive the cutting tool of saw blade sawing operation by transmission mechanism, mainly to cut timber and building, finishing section bar, have that volume is little, in light weight, cutting efficiency is high, portably use characteristics such as convenient, not only greatly reduce operator's labour intensity, and improved operating efficiency, extremely users' welcome is widely used in all trades and professions.But in use there is unsafe problems in existing electric circular saw, owing to there is not comparatively desirable safety device during electric circular saw startup work, when the energising electric circular saw at the undesigned shift knob that touches, electric circular saw is with regard to startup work, saw blade rotates at a high speed, cause huge property loss sometimes, and can produce injury to human body.For fear of the generation of misoperation, people have proposed a lot of safety approach, still have irrational place and unsafe factor.At the problems referred to above, many manufacturers and knowledgeable people develop and develop, but do not have the comparatively ideal product of formation to emerge so far as yet.

Summary of the invention

For overcoming existing electric circular saw above shortcomings, the purpose of this utility model provides a kind of simple and reasonable, easy for operation, high efficiency, safe and reliable electric circular saw Protective lock device.

The utility model solves the problems of the technologies described above the technical scheme that adopts, it comprises body, base plate, blade shroud, handle, power switch, shift knob, depth gauge rule, be hinged with the interlock push rod in the described handle, be hinged with driving lever on the body, the front end of interlock push rod is that push button, the centre of exposing is provided with locking plate, dead bolt on locking plate and the shift knob fastens mutually, the end of interlock push rod and the front end interlock of driving lever also are provided with the push rod back-moving spring, the rear end of driving lever (13) and the retaining of depth gauge rule intersect by end face, and driving lever is provided with the driving lever back-moving spring.

The further scheme of the utility model, described depth gauge rule are provided with adjustable degree of depth positive stop, and described body is provided with the spacing catch of the degree of depth that matches with the depth localization piece, and degree of depth positive stop is locked by locking knob.

After adopting said structure, following advantage and effect are compared with prior art arranged: during work, has only the promotion push button, make separating of dead bolt on the locking plate of interlock on the push rod and the shift knob, just can press shift knob and connect power switch, start electric circular saw work, meanwhile push button drives the interlock push rod and clockwise rotates the rotation of drive driving lever, the rear end of driving lever is separated with the end face of depth gauge rule, thereby realize power switch latch mechanism and the dual release of anti-unexpected cutting latch mechanism, one hand is finished power switch release and anti-unexpected cutting release, recovers the lock configuration state after work is finished automatically; Simple and reasonable, easy to operate, safe and reliable, can avoid the generation of unexpected triggering accident, improved the safety coefficient that product uses greatly.

Description of drawings

Structural representation when Fig. 1 is the utility model nature.

The structural representation of another side when Fig. 2 is the utility model nature.

Structural representation when Fig. 3 is the utility model released state.

Wherein, 1 blade shroud, 2 base plates, 3 bodies, 4 handles, 5 power switches, 6 shift knobs, 7 button spring, 8 dead bolts, 9 push buttons, 10 locking plates, 11 driving lever back-moving springs, 12 interlock push rods, 13 driving levers, 14 driving lever seats, the spacing catch of 15 degree of depth, 16 retainings are by end face, 17 depth gauge rules, 18 degree of depth positive stops, 19 locking knobs, 20 cutting angle steering mechanism, 21 push rod back-moving springs.

The specific embodiment

Shown in Figure 1, specific embodiments for a kind of electric circular saw Protective lock of the utility model device, it comprises body 3, base plate 2, blade shroud 1, handle 4, power switch 5, shift knob 6, depth gauge rule 17, handle 4 is fixed on the body 3, blade shroud 1 is connected with base plate 2 by cutting angle steering mechanism 20, body 3 is hinged on the framework of blade shroud 1, saw blade is arranged in the blade shroud 1, be provided with the body back-moving spring between the framework of body 3 and blade shroud 1, when regulating cutting angle, body 3 rotates with blade shroud 1, body 3 drives saw blade high speed rotary work during work, and body 3 rotates the cutting of realization depthkeeping around the connecting axle of blade shroud 1 framework simultaneously; Handle 4 be provided with power switch 5 and with the suitable shift knob 6 of power switch 5, handle 4 is provided with the button spring 7 that shift knob 6 is resetted, depth gauge rule 17 is fixedly arranged on the blade shroud 1, be hinged with interlock push rod 12 in the described handle 4, body 3 is provided with driving lever seat 14, be hinged with driving lever 13 on the driving lever seat 14, the front end of interlock push rod 12 is the push button 9 that exposes, the centre is provided with locking plate 10, dead bolt 8 on locking plate 10 and the shift knob 6 fastens mutually, the end of interlock push rod 12 and the front end interlock of driving lever 13 also are provided with push rod back-moving spring 21, the retaining of the rear end of driving lever 13 and depth gauge rule 17 intersects by end face 16, and driving lever 13 is provided with driving lever back-moving spring 11.

In order to realize power switch latch mechanism and the interlock of anti-unexpected cutting latch mechanism, depth gauge rule (17) is provided with adjustable depth localization piece (18), described body (3) is provided with the spacing catch of the degree of depth (15) that matches with degree of depth positive stop (18), and its depth adjustment locks by locking knob (19).Be the lock configuration state under the utility model nature, cutting action can't be opened and carry out to machine.During work, can finish power switch release and the release of anti-unexpected cutting lock by one hand, can recover to lock configuration state automatically after work is finished.

The above is specific embodiment of the utility model; be not that the utility model is made any pro forma restriction; do not breaking away from the technical solution of the utility model basis, the simple modification of having done, equivalent variations or modification all fall into protection domain of the present utility model.

Claims

1. electric circular saw Protective lock device, comprise body (3), base plate (2), blade shroud (1), handle (4), power switch (5), shift knob (6), depth gauge rule (17), it is characterized in that: be hinged with interlock push rod (12) in the described handle (4), be hinged with driving lever (13) on the body (3), the front end of interlock push rod (12) is the push button (9) that exposes, the centre is provided with locking plate (10), locking plate (10) fastens with the dead bolt (8) on the shift knob (6) is mutual, the end of interlock push rod (12) and the front end interlock of driving lever (13) also are provided with push rod back-moving spring (21), the retaining of the rear end of driving lever (13) and depth gauge rule (17) intersects by end face (16), and driving lever (13) is provided with driving lever back-moving spring (11).

2. electric circular saw Protective lock device according to claim 1, it is characterized in that: described depth gauge rule (17) is provided with adjustable degree of depth positive stop (18), described body (3) is provided with the spacing catch of the degree of depth (15) that matches with depth localization piece (18), and degree of depth positive stop (18) is locked by locking knob (19).