CN2404621Y

CN2404621Y - Device for adjusting angle for electric curved saw

Info

Publication number: CN2404621Y
Application number: CN 99247944
Authority: CN
Inventors: 陈剑伦; 朱中芳
Original assignee: Ningbo Xiecheng Power Tools Co Ltd
Current assignee: Ningbo Xiecheng Power Tools Co Ltd
Priority date: 1999-11-23
Filing date: 1999-11-23
Publication date: 2000-11-08
Anticipated expiration: 2009-11-23

Abstract

The utility model relates to a device for adjusting an angle for an electric curved saw, which comprises a curved saw body, an inclined bottom board and a connecting device which is used between the bottom board and the body. The connecting device comprises a threaded post, an elastic knob, a clamping board nut and an arch support frame which is clamped between the knob and the clamping board nut. A gear form is processed on one end of the arch support frame. A longitudinal straight groove is processed on the arc surface of an inner cavity, and is used for locking and limiting the rotation of the bottom board. The clamping board nut is processed into a circular arc form, and an outer circular arc surface is provided with the longitudinal straight groove which is locked with the longitudinal straight groove in the arch support frame. Compared with the locking of original single 'tooth to tooth' engagement, the locking of the utility model is more fixed and firm.

Description

The inclination-angle regulating device of electric jig saw

The utility model relates to electric jig saw, is a kind of inclination-angle regulating device of electric jig saw.

Existing electric jig saw inclination-angle regulating device includes the electric jig saw body, be positioned at uprightly be fixed with on the body downside one can rotation fixed bolt, other has one and the separable base plate of sweep-saw body, using the fitting strip that is spirally connected with double-screw bolt that both are linked by an arch support between base plate and the body is fixed together, arch support can rotate and lock with respect to the sweep-saw body, thereby between can form certain angle of inclination.In order to increase anti-loose ability, in an end end machining of arch support the flank profil of arc is arranged, mould at the sweep-saw of arc flank profil same position and also be processed with identical flank profil on bright, both realize the chimeric locking of tooth to tooth.Though this structure is than not strengthening with the anti-loose ability of the scheme of engaging tooth, owing to the wearing and tearing that have tooth, the gap of tooth and between cog increases, and unavoidably can produce loosening phenomenon, thereby make base plate rotatable with respect to sweep-saw, and the inclination angle changes.

The purpose of this utility model is to avoid the defective of prior art and a kind of electric jig saw inclination-angle regulating device that firm, anti-loose ability is strengthened greatly that locks is provided.

Goal of the invention of the present utility model is achieved by the following scheme: it includes the sweep-saw body, one with described body constitute separable be connected rotatable and be locked in tiltable locational base plate arbitrarily with respect to body, uprightly be fixed with on the belly downside of body one can rotation fixed bolt, the top of double-screw bolt is connected with an elastic button that is used for the turn double-screw bolt horizontally disposed and that the inclination angle is locked and revolves, the upper side of arch support and base plate is fixed, offer the arcuate socket and the vertical straight hole that pass through for described double-screw bolt on its cylinder, the flank profil that the arc flank profil on the end termination of arch support and the sweep-saw of arc flank profil relative position are moulded on the shell forms chimeric locking face to face mutually.The front end of base plate is provided with the operation fenestra of a breach that passes through for saw blade and and described double-screw bolt contraposition, double-screw bolt passes the arcuate socket of described arch support, the clamping plate nut is screwed onto on the termination, lower end of double-screw bolt, for prevent base plate rotate on the inner chamber cylinder of arch support processed several parallel and sweep-saw direction of propulsion in the same way and can with vertical straight trough of clamping plate nut both sides snapping.The protruding counterfort face of the cancave cambered surface of body belly downside and described arch support amplexiforms mutually, and base plate is rotatable and be locked on the position of any inclination with respect to body.Described clamping plate nut also can be processed to circular arc, processes vertical straight trough on the exterior arc surface, locks mutually with the vertical straight trough of the inner chamber of described arch support.

The utility model has the advantages that: on the inner chamber cylinder of arch support, set up vertical straight trough, can limit arch support and rotate, make the sweep-saw floor locking more firm, more original single " tooth is to tooth " engagement locking, its anti-loose ability will strengthen greatly.

Description of drawings:

Fig. 1 is an embodiment general partial sectional view of the present utility model;

Fig. 2 is the base plate stereogram of Fig. 1 embodiment;

Fig. 3 is the partial sectional view of looking up of Fig. 1, the layout of reflection degree of tightness knob;

Fig. 4 be the A-A of Fig. 1 to view, the general structure of reflection inclination-angle regulating device;

Fig. 5 is the inclination user mode figure of Fig. 4;

Fig. 6 is the schematic perspective view of arch support;

Fig. 7 is clamping plate nut (circular arc) schematic perspective view.

Embodiment to the utility model is described further again below in conjunction with accompanying drawing:

Shown in Fig. 1-7, the belly downside of electric jig saw body 1 fix one from the lining outside fixed bolt 2, its top fixing horizontal is arranged is used for the degree of tightness knob 3 of turn double-screw bolt 2, double-screw bolt 2 with one with the separable base plate 4 of sweep-saw body and body a kind of separable each other connection of formation.Connection between the two also must be achieved by an arch support 5 and a clamping plate nut 6a who is fixed on the base plate 4.Body 1 belly downside has the protruding counterfort face of a cancave cambered surface and described arch support 5 to amplexiform mutually.Have the arcuate socket 7 and the vertical straight hole 8 that pass through for double-screw bolt 2 on the upside cylinder of arch support 5.Described arcuate socket 7 is to pass through to use for double-screw bolt 2 when regulating the inclination angle of base plate 4 and body 1; And vertically straight hole 8 is to pass through to use for double-screw bolt 2 along the mobile of the sweep-saw direction of motion with respect to body 1 at base plate 4.At the processed dentation profile 9 of an end of arch support 5, also processing identical profile of tooth on the shell face with profile of tooth 9 relative the moulding of arch support under the belly of body 1.When base plate 4 moves, when the profile of tooth 9 and the body 1 of arch support end are moulded on the shell corresponding profile of tooth contraposition engagement, just limited base plate 4 is done rotation with respect to body 1 the free degree forward.Simultaneously on the whole cylinder of arch support 5 inner chambers processed several be parallel to each other and with sweep-saw direction of propulsion vertical straight trough 15 in the same way, after the locking of inclination angle, the both sides of clamping plate nut 6a all with vertical straight trough 15 snappings, make the dual restriction of base plate 4 rotations.Described clamping plate nut 6b also can be processed to circular arc, processes vertical straight trough 16 on the exterior arc surface, locks mutually with the vertical straight trough 15 of the inner chamber of described arch support 5.On the upper surface of arch support 5, be carved with the scale graticule that can reflect the inclination angle number of degrees.The front end of base plate 4 is jagged 11, and it by usefulness, also has an operation fenestra 14 with described double-screw bolt contraposition for saw blade 12.The saw holder carriage 13 of the belt wheel on the body 1 provides support at work for saw blade 12.

The course of work of the present utility model is as follows:

When needs are regulated the inclination angle, unclamp degree of tightness knob 3 earlier, make body 1 and base plate 4 get loose mutually.After both get loose mutually, base plate 4 rotated on the angle that will tilt, then base plate 4 is passed forward, profile of tooth 9 on the arch support termination and body 1 are moulded when corresponding tooth is meshing with each other on the shell, again with the moving degree of tightness knob 3 of hand-screw, cause on the clamping plate nut 6a and move, arch support 5 is clamped on the body 1, this moment clamping plate nuts 6a both sides also with vertical straight trough 15 snappings of arch support inner chamber, like this, base plate 4 is fastened on the body 1 with a desired inclination angle.Base plate 4 is moved backward when with hand-screw pine knob 3 again, mould for the profile of tooth 9 and the body 1 of arch support 5 that corresponding profile of tooth breaks away from engagement on the shell, this just makes base plate 4 be in the state that gets loose with respect to body 1.

Claims

1. the inclination-angle regulating device of an electric jig saw, it includes sweep-saw body (1), one with described body constitute separable be connected rotatable and be locked in tiltable locational base plate (4) arbitrarily with respect to body, uprightly be fixed with on the belly downside of body (1) one outwards stretch from the lining can rotation fixed bolt (2), the top of double-screw bolt (2) is fixed with a horizontally disposed elastic button and revolves (3), on described base plate (4), be fixed with an arch support (5), on its cylinder, offer the arcuate socket (7) and the vertical straight hole (8) that pass through for described double-screw bolt (2), on a termination of arch support (5), be processed with and be used to limit the profile of tooth (9) that base plate rotates, body (1) is moulded on relative with described arch support profile of tooth (9) on the shell facade and also is processed with identical profile of tooth, constitute between the two and can close the engagement that to take off, the front end of base plate is provided with the operation fenestra (14) of a breach (11) that passes through for saw blade and and described double-screw bolt contraposition, double-screw bolt (2) passes the arcuate socket (7) of described arch support, a clamping plate nut 6a is spirally connected on the termination, lower end of described double-screw bolt (2), body (1) belly downside has one to amplexiform mutually and relatively turnable cancave cambered surface with the protruding counterfort face of described arch support, it is characterized in that: on the inner chamber cylinder of described arch support (5) processed several parallel and sweep-saw direction of propulsion in the same way and can with clamping plate nut (6a) both sides snapping be used for limiting vertical straight trough (15) that base plate (4) rotates.

2. the inclination-angle regulating device of electric jig saw as claimed in claim 1, it is characterized in that: described clamping plate nut (6b) is processed to circular arc, be processed with vertical straight trough (16) on the exterior arc surface, and lock mutually with the vertical straight trough of inner chamber (15) of arch support (5).