CN101745692A

CN101745692A - Quick detaching structure for riving knife of table saw

Info

Publication number: CN101745692A
Application number: CN200810181945A
Authority: CN
Inventors: 刘嘉盛; 蔡杰原
Original assignee: Durq Machinery Corp
Current assignee: Durq Machinery Corp
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2010-06-23

Abstract

The invention discloses a quick detaching structure for the riving knife of a table saw, which comprises a riving knife seat, the riving knife detachably clamped and arranged on the riving knife seat, a locating piece passing through and arranged on the riving knife seat and the riving knife, and a handle rotationally arranged on the locating piece, wherein the locating piece has a locating part along the radial direction thereof, and the handle has a convex part. When the handle is not rotated and arranged at a release position, the convex part of the handle and the locating part of the locating piece are staggered so that the handle does not exert thrust force on the riving knife seat, and when the handle is rotated to a locating position, the convex part of the handle and the locating part of the locating piece are clamped so that the handle moves towards the riving knife seat along the axial direction of the locating piece to push and withstand the riving knife seat so as to locate the riving knife on the riving knife seat.

Description

The quick detaching structure for riving knife of table saw

Technical field

The present invention relates to circular sawing machine, particularly about the quick detaching structure for riving knife of a kind of saw.

Background technology

When workpiece places on the sawing machine platform of circular sawing machine and pushed by after the sawing of saw blade, to be produced clamping because of the back stretch influence of the thrust that continued and material own by the workpiece of sawing, cause saw blade to be clamped by workpiece and increase and workpiece between frictional force, to hinder the propelling of workpiece.Therefore, circular sawing machine can be provided with a chopper usually again, and chopper can be cut workpiece by in the joint-cutting that is produced after the saw blade sawing, and in order to strutting by the workpiece of sawing, and then assist operator is safer and push workpiece effortlessly.

The saw blade of circular sawing machine all is designed to adjustable lifting usually, makes things convenient for the workpiece of sawing different-thickness.In addition, chopper is designed to detachable, with ease of assembly, but how to allow chopper can finish assembly and disassembly and easy-to-use fast, always is that industry makes great efforts the direction of researching and developing and improveing.

As TaiWan, China Announcement Number M299639 patent case disclosed " quick detaching structure for riving knife of circular sawing machine " and M317330 patent case disclosed " the chopper group assembling and dismantling structure of breast bench ", all the easy accessibility that increases chopper is reached the purpose of improvement respectively.In view of this, the inventor of this case thinks funiculus through detailed, and accumulates exploitation and the manufacturing experience of being engaged in relevant industries for many years, develops a kind of quick detaching structure for riving knife that can finish dismounting fast eventually, effectively to address the above problem.

Summary of the invention

Main purpose of the present invention is to provide the quick detaching structure for riving knife of a kind of saw, and it can finish assembly and disassembly apace.

For reaching above-mentioned purpose, quick detaching structure for riving knife provided by the present invention includes a chopper seat, a chopper, positioning piece, leader and one first elastic component.This chopper seat has a pair of clamping plate, and respectively these clamping plate have a perforation; This chopper is located between these clamping plate of this chopper seat, and has the chute of these perforation of connection; This keeper is arranged in the perforation of this chopper seat and the chute of this chopper, and has a head and an outstanding location division, axially vertical this keeper of this location division axially; This handle rotationally and can along moving axially of this keeper be located at this keeper, this handle can be rotated between location position and an off-position.

When this handle is positioned at this position location, a protuberance of this handle snaps into the location division of this keeper, but makes wherein these clamping plate of this this chopper seat of handle ejection and force these this choppers of clamping plate packing; And be positioned at this off-position when this handle, and the protuberance of this handle breaks away from the location division of this keeper, and this this handle of first elastic component pushing tow makes this handle along moving axially of this keeper and can these clamping plate of ejection.

By this, as long as this handle is turned to this position location, this chopper can be fixed between the clamping plate of this chopper seat, on the contrary, as long as this handle is turned to this off-position, this chopper can disassemble between the clamping plate of this chopper seat.

Description of drawings

Fig. 1 is the stereogram of a preferred embodiment of the present invention;

Fig. 2 is the three-dimensional exploded view of a preferred embodiment of the present invention;

Fig. 3 is the partial side view of a preferred embodiment of the present invention, discloses handle and is positioned at the position location;

Fig. 4 is the cutaway view of Fig. 3, and the protuberance that discloses handle snaps into the location division of keeper;

Fig. 5 is the partial side view of a preferred embodiment of the present invention, discloses handle and is positioned at the off-position;

Fig. 6 is the cutaway view of Fig. 5, discloses the location division of the recess butt keeper of handle;

Fig. 7 is the side view of a preferred embodiment of the present invention, and the reference column that discloses strap embeds the 3rd locating hole of chopper.

[main element symbol description]

Quick detaching structure for riving knife 10 chopper seats 20

Strap 22 first perforation 221

Joint pin 223 reference columns 225

Fixed leg 227 ambulatory splints 24

Second perforation, 242 connecting holes 244

First locating hole, 246 fixing holes 248

Chopper 30 chutes 32

Opening 34 second locating holes 36

37 the 3rd locating holes 38 of boring a hole

Abutting part 39 keepers 40

Head 42 body portions 44

Afterbody 46 location divisions 48

Second elastic component, 50 handles 60

Articulated section 62 pivoted holes 64

Capping 65 protuberances 66

Recess 68 clicking sections 69

First elastic component 70

P1 off-position, position location P2

The specific embodiment

In order to describe structure of the present invention, feature and effect place in detail, lift following preferred embodiment now and cooperate graphic explanation as after.

See also Fig. 1 and Fig. 2, be the quick detaching structure for riving knife 10 that a preferred embodiment of the present invention provided, include a chopper seat 20, a chopper 30, positioning piece 40, one second elastic component 50, leader 60 and one first elastic component 70, wherein:

Chopper seat 20 has a strap 22 and an ambulatory splint 24.The central authorities of strap 22 have first a rectangular perforation 221, and respectively has a joint pin 223 in first perforation, 221 upper and lower, and respectively have a reference column 225 in the left and right side of first perforation 221, reference column 225 has the lead angle design, in addition, the lower right corner of strap 22 has a fixed leg 227; The central authorities of ambulatory splint 24 have one rectangular and corresponding first the perforation 221 second the perforation 242, and respectively has a connecting hole 244 that can wear for joint pin 223 in second perforation, 242 upper and lower, and respectively have first locating hole 246 that can supply reference column 225 to wear in the left and right side of second perforation 242, in addition, the lower right corner of ambulatory splint 24 has a fixing hole 248 that can supply fixed leg 227 to wear.

Chopper 30 has a chute 32, chute 32 forms an opening 34 in the bottom of chopper 30, chopper 30 can allow the joint pin 223 of strap 22 embed in the chutes 32 via opening 34, chopper 30 is installed between strap 22 and the ambulatory splint 24 and can deflect.Chopper 30 has second locating hole 36 of a pair of contiguous chute 32 bottoms and the 3rd locating hole 38 on a pair of contiguous chute 32 tops in addition, these second locating holes 36 wear for the reference column 225 of strap 22 respectively with these the 3rd locating holes 38, in order to chopper 30 is positioned at two differing heights.In addition, the lower right corner of chopper 30 has the abutting part 39 that a scarf constitutes.

Keeper 40 has the head 42 of a circular cross section, the body portion 44 of a rectangular cross section and the afterbody 46 of a circular cross section, as shown in Figure 4, second perforation 242 of ambulatory splint 24 is passed in regular turn with afterbody 46 by body portion 44, the chute 32 and first of the strap 22 of chopper 30 bores a hole 221, and the engagement limits of rectangle first perforation 221 of the body portion 44 by rectangular cross section, strap 22 and rectangle second perforation 242 of ambulatory splint 24, keeper 40 can't be rotated with chopper 30 by phase broadsword v.broadsword seat 20.In addition, the head 42 of keeper 40 radially has two outwards outstanding location divisions 48 along it, in the present embodiment, is the head 42 with the interspersed keeper 40 of a plug, makes the two ends of plug form location division 48.

Second elastic component 50 is sheathed on the body portion 44 of keeper 40, and with its terminal contact ambulatory splint 24, in order to ambulatory splint 24 towards chopper 30 ejections.

Handle 60 has an articulated section 62 and a clicking section 69, articulated section 62 has the head 42 that a pivoted hole 64 is sheathed on keeper 40, makes handle 60 be subjected to external force effect switching between a location position P1 shown in Figure 3 and an off-position P2 shown in Figure 5 because of its clicking section 69.Handle 60 has a plurality of protuberances 66 and recess 68 in the periphery of pivoted hole 64, these protuberances 66 and recess 68 interlaced formation action of cam.When handle 60 is positioned at as shown in Figure 3 and Figure 4 position location P1, the location division 48 of the protuberance 66 corresponding keepers 40 of handle 60, being limited by keeper 40 can't rotate with mobile, handle 60 axially moving towards ambulatory splint 24 along keeper 40 will be caused, and then pushing tow ambulatory splint 24 is close towards strap 22, reaches according to this purpose of chopper 30 packings between ambulatory splint 24 and strap 22.When handle 60 is positioned at Fig. 5 and off-position P2 shown in Figure 6, the protuberance 66 of handle 60 breaks away from the location division 48 of keeper 40, change the location division 48 of the recess 68 of handle 60 into corresponding to keeper 40, at this moment, first elastic component 70 in handle 60 articulated sections 62 is located in the Tibetan, and because of the head 42 of an end contact keeper 40, other end contact is located at a capping 65 of articulated section 62, so will be to handle 60 towards direction ejection away from ambulatory splint 24, promptly chopper 30 no longer is subjected to pinching.

Below put off until some time later the dismounting of bright chopper 30:

When the operator will assemble chopper 30, determine that earlier handle 60 is positioned at off-position P2, then with the crack between chopper 30 root edge secured in alignment clamping plate 22 and the ambulatory splint 24, press down chopper 30 again and make the joint pin 223 of its opening 34 secured in alignment clamping plate 22, continuing to press down chopper 30 can promote ambulatory splint 24 towards the direction away from strap 22, cause first locating hole 246 of ambulatory splint 24 to leave the reference column 225 of strap 22 simultaneously, and when the abutting part 39 of chopper 30 abuts to the fixed leg 227 of strap 22, the reference column 225 of strap 22 will embed in second locating hole 36 of chopper 30, thereafter with handle 60 switchings to Fig. 3 and position location P1 shown in Figure 4, be interlock ejection ambulatory splint 24 again by the location division 48 of keeper 40 and the protuberance 66 of handle 60, according to this with chopper 30 packings between strap 22 and ambulatory splint 24, the location of so promptly finishing chopper 30.

On the contrary, when the operator will dismantle chopper 30, with handle 60 switchings to Fig. 5 and off-position P2 shown in Figure 6, it causes the capping 65 of first elastic component, 70 ejection handles 60 and handle 60 is driven towards the direction away from ambulatory splint 24, make 62 bottom surfaces, articulated section and chopper 30 distances of handle 60 strengthen, and handle 60 remain on not can double swerve state, multiple when chopper 30 phase broadsword v.broadsword seats 20 are detached, can extract chopper 30 smoothly out.

When above-mentioned chopper 30 cooperated with the reference column 225 of strap 22 with second locating hole 36, chopper 30 was applicable to thicker workpiece sawing occasion use, and chopper 30 apical margins can be established an eye-protection cover for group.Right under the occasion of not using eye-protection cover, people then can cooperate with the 3rd locating hole 38 chopper 30 with the reference column 225 of strap 22, fixed leg 227 also will protrude into a perforation 37 of chopper 30, make chopper 30 not be subjected to the influence of fixed leg 227, as shown in Figure 7, be applicable to thin workpiece sawing occasion use.

By this, the present invention utilizes the cam design that protuberance and recess constituted of handle, allows the chopper can be very apace and be fixed on the chopper seat easily or disassemble from the chopper seat, to increase the convenience on using.

The above, only be the detailed description and the diagram of preferred embodiment of the present invention, all closing in the embodiment of the spirit variation similar of the present patent application claim with it, all be contained in the category of the present invention, anyly be familiar with this skill person in the field of the invention, can think easily and variation or modify the claim that all can be encompassed in following this case.

Claims

1. the quick detaching structure for riving knife of table saw is characterized in that including:

One chopper seat has a pair of clamping plate, and respectively these clamping plate have a perforation;

One chopper is located between these clamping plate of this chopper seat, and has a chute, and this chute is communicated with the perforation of these clamping plate;

Positioning piece is arranged in the perforation of these clamping plate of this chopper seat and the chute of this chopper, and has a head and an outstanding location division, axially vertical this keeper of this location division axially;

The leader, rotationally and can along moving axially of this keeper be located at this keeper and can between location position and an off-position, rotate, this handle has a protuberance, when this handle is positioned at this position location, the protuberance of this handle engages the location division of this keeper, make this handle along moving axially of this keeper and wherein these clamping plate of this chopper seat of ejection, force these this choppers of clamping plate packing, when this handle is positioned at this off-position, the protuberance of this handle breaks away from the location division of this keeper, this handle will be not can these clamping plate of ejection; And

One first elastic component, its two ends are head and this handle of this keeper of contact respectively, when this handle is positioned at this off-position, this handle of pushing tow maintain not can the ejection clamping plate the position.

2. the quick detaching structure for riving knife of table saw as claimed in claim 1, it is characterized in that, this handle also has a recess in abutting connection with this protuberance, when this handle is positioned at this position location, stagger in the recess of this handle and the location division of this keeper, when this handle is positioned at this off-position, the recess of this handle is to location division that should keeper.

3. the quick detaching structure for riving knife of table saw as claimed in claim 1 is characterized in that this keeper radially is inserted with a plug in it, and the end of this plug forms this location division.

4. the quick detaching structure for riving knife of table saw as claimed in claim 1 is characterized in that also include one second elastic component, this second elastic component is sheathed on the whole body portion of this keeper, and wherein these clamping plate of this chopper seat of contact, and these clamping plate are promoted towards this chopper.

5. the quick detaching structure for riving knife of table saw as claimed in claim 4, it is characterized in that, the body portion cross section of this keeper is rectangular, and the perforation of respectively these clamping plate of this chopper seat is rectangular and can wear for the body portion of this keeper, and this keeper can't be rotated relative to these clamping plate.

6. the quick detaching structure for riving knife of table saw as claimed in claim 1 is characterized in that wherein these clamping plate of this chopper seat have a joint pin, and another these clamping plate have a connecting hole, and this joint pin passes the chute of this chopper and is embedded in this connecting hole.

7. the quick detaching structure for riving knife of table saw as claimed in claim 1, it is characterized in that, wherein these clamping plate of this chopper seat have a reference column, another these clamping plate have one first locating hole, this chopper has second locating hole of contiguous this chute end and the 3rd locating hole on contiguous this chute top, and this reference column selectively passes this second locating hole and the 3rd locating hole of this chopper.

8. the quick detaching structure for riving knife of table saw as claimed in claim 7, it is characterized in that, wherein clamping plate of this chopper seat have a fixed leg, another these clamping plate have a fixing hole that supplies this fixed leg to wear, the bottom of this chopper has an abutting part, when the reference column of these clamping plate passes second locating hole of this chopper, this this fixed leg of abutting part butt.