CN2772697Y

CN2772697Y - Quickly replaceable saw bit clamp

Info

Publication number: CN2772697Y
Application number: CN 200520055539
Authority: CN
Inventors: 朱桂芳
Original assignee: DONGGUAN TOP ELECTRIC APPLIANCE Co Ltd
Current assignee: DONGGUAN TOP ELECTRIC APPLIANCE Co Ltd
Priority date: 2005-03-15
Filing date: 2005-03-15
Publication date: 2006-04-19
Anticipated expiration: 2015-03-15

Abstract

The utility model provides a quick-change clamping device of a saw blade. The utility model comprises a base, a handle, a spring and a positioning pin, wherein the base is transversely provided with a clamping groove; an arc chute is longitudinally arranged on the base; the arc chute is communicated with the clamping groove of the base; a fixed axis is arranged along the bottom of the base; the positioning pin is plugged in the arc chute, and both ends of the positioning pin extend out of the arc chute; the positioning pin is respectively and correspondingly connected with springs at both ends of the fixed axle; the handle is provided with at least two rotating arms which are respectively positioned and embedded with both ends of the fixed axle and the positioning pin. The utility model has the design key points that the arc chute is arranged on the base; the handle is embedded with both ends of the fixed axle and the positioning pin, namely the embedment is between the handle and the positioning pin and forms a nonslipping structure; therefore, fitting structure among assemblies of the device is compact and firm so as to realize the firm clamp; the utility model has the advantages of simple structure and low cost.

Description

Saw blade quick change clamping device

Technical field

The utility model relates to a kind of saw blade quick change clamping device, refers in particular to the clamping device that can change saw blade on the electric tools such as applying to sweep-saw, reciprocating saw fast.

Background technology

Past is to clamping the structure that normally adopts screw-clamped with saw blade on the electric tools such as sweep-saw, as U.S. Pat 3,665,983, this frame mode uses inconvenient, and also needs to load and unload by aid, simultaneously when sweep-saw is worked, because body vibration is big, screw is easy to just get loose, thereby the clamping effect of saw blade is gone up in influence.

Some saw blade clamping apparatus also appear going up in the market, as Chinese patent CN 1095714C, this patent disclosure a kind ofly can reach easy, fast with " fixing device for saw blades " of non-hazardous installation and removal saw blade, wherein this device comprises anchor clamps, voussoir, fixture block, member such as handle and spring, saw blade is installed on anchor clamps and movably between the fixture block, one side of fixture block is a wedge shape, on the tapered end of fixture block, be provided with voussoir, and also be configured to wedge shape with the contacted other end of the tapered end of fixture block, under the effect of handle, two springs are exerted pressure, utilize the effect of spring force to make voussoir that fixture block is shifted to the saw blade direction, thereby saw blade is clamped, though this device can be avoided the defective of tradition with screw-clamped, its complex structure, various accessory die sinking costs are higher, are unfavorable for market competition.

Again, U.S. Pat 6,233,833 also disclose a kind of " having the reciprocating saw that receives fixing device for saw blades ", as shown in Figure 1, and wherein, described clamping device is made up of body 1, handle 2, spring 3, fixed bar 4 etc., this body 1 is provided with a track 5 for fixed bar 4 slips, and both sides also are provided with a linear opening 6 that elongates on the U-shaped handle 2, so that fixed bar 4 two ends can be movable in the opening 6 that elongates; Clamping effect in this patent is to utilize handle 2 application of forces are advanced, force fixed bar 4 in the set track 5 of body with the set opening 6 of handle 2 in activity simultaneously, insert saw blade then, screen resilience by spring 3, fixed bar 4 is compressed saw blade, the mode of this clamping, its fixed bar 4 must be to slide simultaneously in the opening 6 of track 5 that body 1 is provided with and handle 2 and could realize, so there is following defective, at first because fixed bar 4 moves in track 5 and opening 6 simultaneously, fixed bar is easy to get loose, it is poor to cause clamping steadiness, next this complex structure, spare and accessory parts are many, cause the wasting of resources.

The utility model content

The utility model is at above-mentioned the deficiencies in the prior art, and main purpose is to provide a kind of saw blade quick change clamping device, the improvement that it utilizes the inter-module structure, and it is compact that assembly is cooperated, and reaches quick-replaceable effect, clamps more firm simultaneously.

For achieving the above object, the utility model is taked following technical scheme:

A kind of saw blade quick change clamping device comprises pedestal, handle, spring, alignment pin, and this pedestal laterally is provided with a clip slot, vertically is provided with an arc chute on pedestal, and the set clip slot of this arc chute and pedestal communicates; Be provided with a fixed axis along the pedestal bottom, described alignment pin is plugged in the arc chute, and two ends are stretched on outside the arc chute, and this alignment pin has the corresponding connection of a spring respectively with the fixed axis two ends; Described handle has two pivoted arms at least, and this pivoted arm is chimeric with fixed axis, alignment pin two ends location respectively, and described handle can be U-shaped or square frame shape structure, and described alignment pin is cylindrical.

Operation principle of the present utility model is to the direct application of force of handle, alignment pin and handle are operated simultaneously, after alignment pin prolongs arc chute and moves down, saw blade is inserted in the middle of the clip slot, utilize under the effect of recoil of spring power, alignment pin is resisted against saw blade fast and reaches the clamping effect on the saw blade; If will change saw blade, only need the handle application of force is taken out saw blade and got final product; Design focal point of the present utility model is that pedestal is provided with an arc chute, handle and fixed axis, alignment pin two ends tabling, promptly this chimeric be to be slidably structure not between handle and the alignment pin, so inter-module fit structure compactness of this device, firmly, thus also realize to clamp more firm.The utility model is simple in structure, and cost is low, and is practical.

For clearer elaboration and understand architectural feature of the present utility model and effect, describe in detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is a kind of prior art figure of fixing device for saw blades;

Fig. 2 is the combining structure schematic diagram of the utility model saw blade quick change clamping device;

Fig. 3 is another visual angle structural representation of the utility model saw blade quick change clamping device;

Fig. 4 is the utility model saw blade quick change clamping device application examples;

Fig. 5 is the visual angle planar structure schematic diagram of Fig. 4;

Fig. 6 is the profile of the B-B of Fig. 5.

The drawing reference numeral explanation

1, body 2, handle 3, spring 4, fixed bar 5, track 6, opening

100, clamping device 10, pedestal 20, alignment pin 30, spring

40, handle 50, saw blade 60, connecting rod 101, clip slot

102, arc chute 103, fixed axis 401, pivoted arm

The specific embodiment

Extremely shown in Figure 6 as Fig. 2, the utility model saw blade quick change clamping device is to implement like this: see also Fig. 2, shown in Figure 3, a kind of saw blade quick change clamping device 100, comprise pedestal 10, alignment pin 20, spring 30, handle 40, this pedestal 10 laterally is provided with a clip slot 101, vertically be provided with an arc chute 102 on pedestal 10, the set clip slot 101 of this arc chute 102 and pedestal communicates; Be provided with a fixed axis 103 along pedestal 10 bottoms, described alignment pin 20 is plugged in the arc chute 102, and two ends are stretched on outside the arc chute 102, and this alignment pin 20 has a spring 30 corresponding connections respectively with fixed axis 103 two ends; Described handle 40 has two pivoted arms 401 at least, and this pivoted arm 401 is chimeric with fixed axis 103, alignment pin 20 two ends location respectively, and described handle 40 can be U-shaped or square frame shape structure, and described alignment pin 20 is cylindrical.

See also Fig. 4, Fig. 5, Fig. 6, operation principle of the present utility model is on the connecting rod 60 that earlier this device 100 is installed on the electric tools such as sweep-saw, this connecting rod 60 drives 100 runnings of this device under the effect of motor, give the handle 40 direct application of forces, alignment pin 20 and handle 40 are operated simultaneously, in the middle of saw blade 50 insertion clip slots 101, under the effect of spring 30 screen resiliences, alignment pin 20 is resisted against saw blade 50 fast and reaches the clamping effect on the saw blade; If will change (taking-up) saw blade 50, only need handle 40 application of forces, alignment pin 20 disengagings contact with saw blade 40, promptly take out saw blade 40; Design focal point of the present utility model is that pedestal 10 is provided with an arc chute 102, handle 40 and fixed axis 103, alignment pin 20 two ends tablings, promptly this chimeric be to be slidably fit structure not between handle 40 and the alignment pin 20, so inter-module fit structure compactness of this device 100, firmly, thus also realize to clamp more firm.The utility model is simple in structure, and cost is low, and is practical.

In sum, it only is the preferred embodiment of the utility model saw blade quick replacement device, be not that technical scope of the present utility model is imposed any restrictions, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of saw blade quick change clamping device comprises pedestal, handle, spring, alignment pin, and this pedestal laterally is provided with a clip slot, it is characterized in that: vertically be provided with an arc chute on pedestal, the set clip slot of this arc chute and pedestal communicates; Be provided with a fixed axis along the pedestal bottom, described alignment pin is plugged in the arc chute, and two ends are stretched on outside the arc chute, and this alignment pin has the corresponding connection of a spring respectively with the fixed axis two ends; Described handle has two pivoted arms at least, and this pivoted arm is located chimeric with fixed axis, alignment pin two ends respectively.

2, saw blade quick change clamping device according to claim 1 is characterized in that: described handle is U-shaped or square frame shape structure.

3, according to the saw blade quick change clamping device of claim 1 or 2, it is characterized in that: described alignment pin is cylindrical.