CN106964843A

CN106964843A - A kind of quick-gripping device

Info

Publication number: CN106964843A
Application number: CN201710318375.6A
Authority: CN
Inventors: 戴伟
Original assignee: NANJING JIUCHI ELECTROMECHANICAL INDUSTRY Co Ltd
Current assignee: NANJING JIUCHI ELECTROMECHANICAL INDUSTRY Co Ltd
Priority date: 2017-05-08
Filing date: 2017-05-08
Publication date: 2017-07-21
Anticipated expiration: 2037-05-08
Also published as: CN106964843B

Abstract

The present invention relates to a kind of quick-gripping device, belong to technical field of tools.The device includes clamping bar and is inserted into the slide that clamping bar lower end is acted on by spring downward power, the bottom of clamping bar is set with the indexable collet sleeve of axial constraint, slide has middle part interpolation slit and the bottom between the clamping bar lower end and the border inner bottom surface of collet sleeve, and the bottom surface of collet sleeve has radial direction slot；When collet sleeve is in inserting position by external force, radial direction slot aligns with interpolation slit；When collet sleeve is in clip position by the effect of elastic recoil power, radial direction slot misplaces with interpolation slit；Border inner bottom surface has the spiral section of lozenges, and when in inserting position, slide is by lozenges jack-up；When in clip position, slide is fallen with lozenges.After the present invention, gapless clamping constraint up and down can be formed, the cutting tool of saw blade etc is easily and reliably clamped.

Description

A kind of quick-gripping device

Technical field

The present invention relates to a kind of quick-gripping device, the device of saw blade or blade fast clamp on especially a kind of instrument, Belong to technical field of tools.

Background technology

The convenient and swift problem always of concern that changes the outfit of the saw blade of the handheld tools such as sweep-saw.Its typical structure referring to The Chinese invention patent application document of Application No. 96105949.4, there is a saw blade clamping apparatus, one in the lower end of elevating lever The individual closing sleeve for being arranged on elevating lever, being axially movable and rotating, have in its lower end one with through hole and radial slot, The ring set being inwardly indented, the ring set the convex shoulder of saw blade in the axial rest of clamped position, and thus saw blade bare terminal end is close to On the lower surface and elastic plugin of elevating lever.To make saw blade relatively accurate and more stably clamping, spring chuck be clamped sleeve with Engagement system is enclosed on outside it, and closing sleeve is rotated in one direction to clamp spring chuck, and being rotated along another direction then makes Spring chuck unclamps.

Existing such saw blade mounting device uses not rotatable relative to reciprocating lever and moveable spring chuck to be used for connecing Receive saw blade bare terminal end, and saw blade is clamped at saw blade convex shoulder by pivotable sleeve.But operation is needed when saw blade is installed in insertion Person overcomes the acting force of the spring in saw blade chuck, can by saw blade inserting in place, if force is not enough or accidentally, saw blade insertion less than Position, just can not reliable retention, therefore there is potential safety hazard.

The content of the invention

It is an object of the invention to：For above-mentioned prior art exist shortcoming, propose one kind can prevent inserting less than The quick-gripping device of position.

In order to achieve the above object, quick-gripping device of the invention includes clamping bar and is inserted under the clamping bar The slide acted on by spring downward power is held, the bottom of the clamping bar is set with the indexable collet sleeve of axial constraint, its feature It is：The slide has middle part interpolation slit and the lower end between the clamping bar lower end and the border inner bottom surface of collet sleeve Portion, the bottom surface of the collet sleeve has radial direction slot；When the collet sleeve is in inserting position by external force, the radial direction slot Alignd with the interpolation slit；When the collet sleeve by elastic recoil power effect be in clip position when, the radial direction slot with it is described Interpolation slit misplaces；The border inner bottom surface has the spiral section of lozenges, and when in inserting position, the slide is by lozenges Jack-up；When in clip position, the slide is fallen with lozenges.

After quick-gripping device using the present invention, when needing to insert the cutting tool of saw blade etc, applying external force will Collet sleeve is indexed into inserting position, and at the same time slide overcomes spring force by jack-up under lozenges effect therewith, cuts work Tool is able to directly arrive at inserting limit position by slot and interpolation slit, without to overcome spring by insertion as prior art Active force, therefore prevented inserting incomplete phenomena；Afterwards, collet sleeve automatically resets under the effect of elastic recoil power, cuts work Tool shank is clipped in that left and right in the interpolation slit of slide is spacing, and the upper side flange portion of cutting tool shank depression is by collet sleeve border inner bottom surface Lozenges on push up, and shank above then pushed by the slide under spring effect, therefore form up and down gapless clamping Constraint, enables the cutting tool of saw blade etc to be easily and reliably clamped.

The structurally consummate of the present invention has, and the bottom has horizontal-extending overhanging pin.

Further improve of the invention is that the top of the clamping bar is equipped with the bullet being located between limited block and movable block Spring, and lower end inserting bears the slide that the spring downward power is acted on by movable block.

The present invention is further improved, and the border inner bottom surface of the collet sleeve also has and cutting tool upper side flange portion The corresponding wedge shape rotation of keeping to the side in position rises section.

The present invention is further improved, in splay seam top, the clamping bar at the top of the interpolation slit of the slide The position of correspondence cutting tool upper side flange portion has to be lacked in splay card.

The present invention also further improve is that the collet sleeve is by the axle position back-up ring axial constraint of setting-in in it in clamping Bar, and by the torsion spring being fitted into can between inserting position and clip position angular indexing and tend to clip position.

The present invention further perfect is that the collet sleeve has radially overhanging spanner, and upper end setting-in rubber sleeve.

Brief description of the drawings

The present invention is further illustrated below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of one embodiment of the invention.

Fig. 2 is Fig. 1 side view.

Fig. 3 is the dimensional decomposition structure diagram that Fig. 1 embodiments remove collet sleeve.

Fig. 4 is the collet sleeve dimensional structure diagram of Fig. 1 embodiments.

Fig. 5 is the sectional perspective structural representation of Fig. 1 embodiment saw blade clamp positions.

Fig. 6 is the dimensional structure diagram that another visual angles of Fig. 5 remove collet sleeve.

Fig. 7 is the sectional perspective structural representation that Fig. 1 embodiments saw blade inserts state.

Fig. 8 is the dimensional structure diagram that another visual angles of Fig. 7 remove collet sleeve.

Embodiment

Embodiment one

The present embodiment be a kind of quick-gripping device of sweep-saw, its structure as shown in Figure 1, Figure 2 and Figure 3, during work above and below it is past The hollow clamping bar 2 moved again is fixed on the lower end of drive rod 1, the top of the clamping bar 2 be equipped with positioned at limited block and movable block 4 it Between spring 3, its lower end inserting by movable block 4 bears spring 3 push power act on slide 7, clamping bar 2 bottom suit Collet sleeve 10, the collet sleeve 10 by axial constraint of axle position back-up ring 9 of setting-in in it in clamping bar 2, while by being fitted into Torsion spring 11 can the angular indexing between the inserting position of saw blade and clip position, and tend to clip position（Referring to Fig. 5 to figure 8）.Collet sleeve 10 has a radially overhanging spanner 10-3, and upper end setting-in is by the closed rubber sleeve in it of torsion spring 11, axle position back-up ring 9 8, bottom surface has radial direction slot 10-2.When collet sleeve 10 is in the inserting position shown in Fig. 7 by outside twisting force, radially insert Groove 10-2 aligns with interpolation slit 7-1；When collet sleeve 10 is acted on by the elastic recoil power of torsion spring 11 is in the clip position shown in Fig. 5, Radial direction slot 10-2 and interpolation slit 7-1 angularly about 90 ° of dislocation.

Slide 7 has the vertical interpolation slit 7-1 at middle part, and lower end has respectively towards the horizontal-extending overhanging pin 7-2 in both sides, two Overhanging pin 7-2 is constrained between the lower end of clamping bar 2 and the border inner bottom surface 10-1 of collet sleeve 10, can be played to position after indexing and be made With.

As shown in figure 4, the border inner bottom surface 10-1 of collet sleeve 10 have two at respectively with the overhanging pin 7-2 positions pair of slide The lozenges spiral section 10-a answered.When pull spanner 10-3 make collet sleeve 10 be indexed into inserting position when, slide 7 correspondence wedge shape Face 10-a eminence, therefore overcome the active force of spring 3 by jack-up under lozenges effect, saw blade can directly pass through radial direction slot 10-2 and interpolation slit 7-1 arrive at inserting limit position, because this process is not required to overcome acting force of the spring completely, therefore are able to ensure inserting In place.Hereafter, spanner 10-3 is unclamped, collet sleeve 10 automatically resets to clip position under the effect of torsion spring 11, and slide 7 is again right Lozenges 10-a lowers position is answered, therefore saw blade is pushed down in the case where the effect of spring 3 is fallen and is clamped.

It is noted that the collet sleeve 10 of the present embodiment is as shown in figure 4, its border inner bottom surface 10-1 also has two punishment Wedge shape rotation of keeping to the side that is not corresponding with the upper side flange portion 12-1 positions of saw blade two and staggering with spiral section 10-a rises section 10-b, therefore when place When clip position, saw blade has the trend of jack-up upward in the presence of rotation rises section, thus with spring downward collective effect, tool There is the effect that reinforcing is clamped.In addition, slide 7 is as shown in figure 1, in splay seam top at the top of interpolation slit 7-1, such as Fig. 6 and Fig. 7 institutes Show, the corresponding saw blade upper side flange portion 12-1 of clamping bar 2 position has to be lacked in splay card, therefore during inserting clamping saw blade, eight The seam top of font and card lack plays a part of constraint saw blade thickness both sides simultaneously, makes it reliable and stable at work.Dismantle saw blade Process is with inserting on the contrary, can analogize.

Experiment shows that the present embodiment is due to above-mentioned collet sleeve and the ingehious design of dependency structure, when saw blade is filled, torn open, chuck Inner spring and saw blade not direct interaction are covered, it is hereby ensured that fast quick-mounting, is torn open, and ensure that clamping is reliably safe.

In addition to the implementation, the present invention can also have other embodiment.All use equivalent substitution or equivalent transformation shape Into technical scheme, all fall within the protection domain of application claims.

Claims

1. a kind of quick-gripping device, including clamping bar and it is inserted into the cunning that the clamping bar lower end is acted on by spring downward power Moving plate, the bottom of the clamping bar is set with the indexable collet sleeve of axial constraint, it is characterised in that：The slide has middle part Interpolation slit and the bottom between the clamping bar lower end and the border inner bottom surface of collet sleeve, the bottom surface of the collet sleeve has Radial direction slot；When the collet sleeve is in inserting position by external force, the radial direction slot aligns with the interpolation slit；When the folder When headgear is in clip position by the effect of elastic recoil power, the radial direction slot misplaces with the interpolation slit；The border inner bottom surface Spiral section with lozenges, when in inserting position, the slide is by lozenges jack-up；When in clip position, The slide is fallen with lozenges.

2. quick-gripping device according to claim 1, it is characterised in that：The bottom has horizontal-extending overhanging Pin.

3. quick-gripping device according to claim 2, it is characterised in that：The top of the clamping bar, which is equipped with, is located at limit Spring between position block and movable block, and lower end inserting bears the slide that the spring downward power is acted on by movable block.

4. quick-gripping device according to claim 3, it is characterised in that：The border inner bottom surface of the collet sleeve also has There is wedge shape rotation of keeping to the side corresponding with cutting tool upper side flange portion position to rise section.

5. the quick-gripping device according to claim 3 or 4, it is characterised in that：It is in eight at the top of the interpolation slit of the slide The seam top of font, the position of the clamping bar correspondence cutting tool upper side flange portion has to be lacked in splay card.

6. quick-gripping device according to claim 5, it is characterised in that：The axle that the collet sleeve passes through setting-in in it Position back-up ring axial constraint can angularly turn in clamping bar, and by the torsion spring being fitted between inserting position and clip position Position and tend to clip position.

7. quick-gripping device according to claim 6, it is characterised in that：The collet sleeve has radially overhanging pull Hand, and upper end setting-in rubber sleeve.