CN201493829U

CN201493829U - Quick clamping device for laminated working element

Info

Publication number: CN201493829U
Application number: CN2009202340178U
Authority: CN
Inventors: 周红陶; 杨壹杰
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2009-08-03
Filing date: 2009-08-03
Publication date: 2010-06-02
Anticipated expiration: 2019-08-03

Abstract

A saw blade quick clamping device matched with an output shaft to clamp a saw blade comprises an external flange, a compress pin, a quick clamping main body, a spring and a turning sleeve capable of clamping the positioning groove of a compress pin. An opening accommodating the compress pin is formed on the quick clamping main body and the opening is provided with an inclined surface, so that the compress pin can be positioned in an axially fixed clamping position and a release position of axial release; at the same time, a bulge is formed on the quick clamping main body; a positioning hole meshed with the bulge is formed on the external flange; and the quick clamping main body and the external flange are axially and relatively fixed. The saw blade quick clamping device requires no auxiliary tool when the saw blade is assembled and dissembled, and can prevent the dead locking of the saw blade; and the structure is simple, and the cost is low, so that the saw blade clamping of an operator is more labor-saving, firmer and more reliable.

Description

A kind of Fast clamping device of sheet operation element

Technical field

The utility model relates to a kind of Fast clamping device of electric tool, and especially a kind of Fast clamping device of the sheet operation element with installing hole belongs to the technical field of electric tool clamping device.

Background technology

Traditional sheet operation element to the band installing hole, as saw blade, grinding wheel, the locking mode of abrasive disc etc. need be used spanner or similar tool when generally locking, this locking mode, locking torque needs to be controlled by manpower, too pine can not well be locked saw blade, and is too firmly then locked easily, thereby or the screw thread that damages screw cause whole clamping device to lose efficacy.As U.S. Pat 7,343,481, clamp mechanism comprises planetary gear system, has the body of male and fomale(M﹠F), and pad has the male and fomale(M﹠F) engagement of a male and fomale(M﹠F) and body.This planet gear clamping device complex structure, number of parts is many, the cost height, and must cooperate spanner or similar tool to lock, use inconvenient.

Also have a kind of mechanism that carries out the saw blade clamping by the promotion of steel ball under the effect of spring flange face, as U.S. Pat 5,388,942, clamping structure can not need spanner, by the free-hand operation of user.But this clamping structure pushes away steel ball by spring to release direction, because spring force is less, is difficult for clamping saw blade, and the effect of locking is undesirable.

Summary of the invention

In order to overcome deficiency of the prior art and defective, the utility model provides the operation element clamping device after a kind of the improvement.

For reaching above purpose, the saw blade Fast clamping device that the utility model discloses, with the output shaft threaded engagement with the clamping saw blade, comprise outward flange, compress pin, fast clip main body, spring has and can fix the rotation set that this compresses the locating slot of pin, fast clip main body has and holds the opening that compresses pin, and opening has the inclined-plane, can be positioned at the clamped position of axial restraint and the released position of axial play to make this compress pin.Simultaneously fast clip main body can have projection, and outward flange has the locating hole with this projection engages, fast clip main body and the circumferential relative fixed of outward flange.

After using the saw blade Fast clamping device of the utility model announcement, all need not aid during the loading, unloading saw blade.When especially loading saw blade,, utilize electric tool to start the cutting resistance of back on the operation element and can realize effect that saw blade is clamped by self-lock mechanism.The saw blade Fast clamping device that the utility model discloses is simple in structure, and part is few, has reduced cost, and is more laborsaving with seasonal operator, and the clamping of operation element is more firm.Simultaneously, fast clip main body and the axial relative fixed of outward flange have prevented the situation that saw blade is locked, than formerly technology is more reliable.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is each assembly perspective view of the utility model preferred embodiment;

Fig. 2 a is the structural representation that Fig. 1 embodiment is in the saw blade clamp position;

Fig. 2 b is the A-A cutaway view of Fig. 2 a;

Fig. 2 c is the structural representation that Fig. 2 a does not contain rotation set;

Fig. 2 d is the B-B cutaway view of Fig. 2 a;

Fig. 3 a is the structural representation that Fig. 1 embodiment is in the saw blade disassembly status;

Fig. 3 b is the C-C cutaway view of Fig. 3 a;

Fig. 3 c is the structural representation that Fig. 3 a does not contain rotation set;

Fig. 3 d is the D-D cutaway view of Fig. 3 a;

Fig. 4 is the structural representation of another embodiment of the utility model;

Specific embodiments

The fast fixture of a preferred embodiment of the present utility model as shown in Figure 1, clamp mechanism 16 basic structures are: fast clip main body 7 has inclined-plane 12, to hold setting element, herein for compressing pin 6, projection 15 on the fast clip main body cooperates with the locating hole 14 on the outward flange 5, one spacing this compresses the setting element of pin 6, it is rotation set 10 herein, its inboard locating slot 13 will compress pin 6 location, between rotation set 10 and the fast clip main body 7 clamping element is arranged, be spring 8 herein, also can be a magnet, jump ring 4 and jump ring 11 are arranged at outward flange 5 and rotation set 10 both sides.Compress preferably 3 of pins, on circumference, evenly distribute.Sealing ring 9 between rotation set 10 and the outward flange has dustproof effect.

After the assembling, rotation set 10 is connected with fast clip main body 7, and outward flange 5 is by locating hole 14 and projection 15 and fast clip main body 7 relative fixed, and the locating slot 13 of rotation set 10 is limited to spring 8 in the groove 18, makes to compress pin 6 in opening 19.

During use, compress pin 6 and have the clamped position of axial restraint and the released position of axial play with respect to opening 19.

As Fig. 2 a, 2b, 2c, shown in the 2d, this saw blade Fast clamping device is in the saw blade clamp position.Rotation set 10 is connected with fast clip main body 7, and the locating slot 13 of rotation set 10 is limited to spring 8 in the groove 18, makes to compress pin 6 in opening 19.Under the effect of spring 8, rotation set 10 makes and compresses the low side that pin 6 is in inclined-plane 12.Owing to the projection 15 on the fast clip main body 7 and the cooperation of the locating hole 14 on the outward flange 5, this moment, outward flange 5 compressed pin 6 simultaneously, and fast clip main body 7 and rotation set 10 4 form stable structure, relative fixed on axial and circumferential.Rotation rotation set 10 drives fast clip main body 7 and outward flange 5 rotations, and the screw thread 17 of fast clip main body 7 is screwed on the screw thread of output shaft 1.Tighten rotation set 10 to the outward flange 5 on the clamp mechanism 16 and touch saw blade 3, and can't turn again the time, installation.Compress pin 6 axial restraints this moment, is positioned at clamped position.

After arrow is machine operation as shown in Figure 1, saw blade 3 rotation directions.After starting electric tool, when saw blade 3 cut workpiece, saw blade 3 runs into the cutting resistance from workpiece, and this cutting drag direction is opposite with saw blade 3 direction of rotation.Saw blade 3 is under the effect of cutting resistance, and the outward flange 5 that drives clamp mechanism 16 rotatablely moves towards cutting drag direction.Compress pin 6 and continue pressing outward flange 5 end faces under the effect of spring 8, outward flange 5 drives fast clip main body 7 towards the rotation of cutting drag direction, and the screw thread on the fast clip main body 7 further is screwed in the screwed hole of output shaft 1, thereby clamps saw blade 3.

As Fig. 3 a, 3b, 3c, shown in the 3d, this saw blade Fast clamping device is in the saw blade disassembly status.When needing to discharge this clamp mechanism 16, the direction of rotation rotation rotation set 10 when pressing saw blade 3 work, the locating slot 13 of rotation set 10 inside promotes to compress the high end motion of pin 6 to the inclined-plane 12 of opening 19.After compressing pin 6 and being positioned at inclined-plane 12 high-end, compress pin 6 axial play, be positioned at the released position.Compress pin 6 away from outward flange 5, discharge axial compressive force, thereby discharge saw blade 3.

The remarkable advantage of present embodiment is all to need not aid during the loading, unloading saw blade.When especially loading saw blade, by self-lock mechanism, the cutting resistance after utilizing electric tool to start can be realized effect that saw blade is clamped.This is simple in structure, and part is few, has reduced cost, and the clamping saw blade is more laborsaving with operating season, and is more firm.On the other hand, the projection 15 on the fast clip main body 7 by with locating hole 14 engagements of outward flange 5, both circumferential relative fixed can prevent that outward flange 5 from rotate separately, be subjected to bigger cutting resistance and make outward flange 5 rotations excessive and saw blade 3 is locked when saw blade 3 work.

As Fig. 4 is another embodiment of the utility model, and wherein, inclined-plane 12 is positioned on the outward flange 5, compresses still motion on the inclined-plane 12 between fast clip main body 7 and the outward flange 5 of pin 6.

The saw blade Fast clamping device that the utility model discloses is applicable to saw blade type electric tools such as angle mill or electric circular saws.The saw blade Fast clamping device that the utility model discloses is not limited to described content of above embodiment and the represented structure of accompanying drawing.On basis of the present utility model to the shape of member wherein and the change apparently that makes the position, substitute or revise, all within the claimed scope of the utility model.

Claims

1. sheet operation element Fast clamping device, cooperate with clamping sheet operation element with holes with output shaft, comprise an outward flange, the one fast clip main body that cooperates with outward flange, at least one setting element between this outward flange and fast clip main body, the control element of one spacing this setting element, one clamping element between this fast clip main body and control element or setting element, it is characterized in that: described fast clip main body and outward flange have an inclined-plane at least, can be positioned on one of the clamped position of axial restraint and released position of axial play to make this setting element.

2. sheet operation element Fast clamping device as claimed in claim 1 is characterized in that: this fast clip main body has projection, and outward flange has the locating hole with this projection engages, to make the axial relative fixed of fast clip main body and outward flange.

3. sheet operation element Fast clamping device as claimed in claim 1, it is characterized in that: this setting element is for compressing pin.

4. sheet operation element Fast clamping device as claimed in claim 3 is characterized in that: this fast clip main body has an opening at least, and this opening one side is the inclined-plane.

5. sheet operation element Fast clamping device as claimed in claim 4 is characterized in that: this compresses pin and opening is respectively 3.

6. sheet operation element Fast clamping device as claimed in claim 1 is characterized in that: this control element is the rotation set with locating slot.

7. sheet operation element Fast clamping device as claimed in claim 1 is characterized in that: this clamping element is a spring.

8. sheet operation element Fast clamping device as claimed in claim 1 is characterized in that: this clamping element is a magnet.