CN2159288Y

CN2159288Y - Portable screw driver

Info

Publication number: CN2159288Y
Application number: CN 93230985
Authority: CN
Inventors: 苏恒义
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-15
Filing date: 1993-05-15
Publication date: 1994-03-23
Anticipated expiration: 2003-05-15

Abstract

The utility model relates to the improvement of a screw driver, and the utility model discloses a portable screw driver. A tool bar of the original screw driver is additionally provided with a bushing-type clamping jaw. The clamping mechanism of an elastic jaw hook is used to clamp and fix screws (bolts) on a hinge head of the screw driver. An elastic jaw on a bushing is used to cause the clamping mechanism to optionally grab and fix screw (bolt) cap heads and cause the screw driver and the screws (bolts) to be connected to form into integration, and thus, the utility model accurately takes screws (bolts) to nut openings to complete the work of tightening the screws (bolts) with no deviation and no disengagement. The screw driver is especially suitable for tightening the screws (bolts) in precise instrument installation, high-altitude operation, floor decoration, etc.

Description

Portable screw driver

The utility model is the improvement to the hand tools screwdriver, especially a kind of convenient screwdriver, and it belongs to the hardware ﹠ tools technical field.

Existing screwdriver is widely used in tightening various screws, bolt.When using screwdriver, generally all need screw (bolt) is stood earlier on the nut aperture, making screw (bolt) screw in the nut bore one, two buckle thread, again may be with the hinge head of screwdriver (or quincunx, or " one " word formula) in the hinge groove on insertion screw (bolt) the cap head, screw (bolt) is tightened in the screw-in nut bore, reached the purpose of the solid screw of spiral shell.Some occasion as the work high above the ground erection unit, or is decorateed flooring etc., place, the nut aperture that has, and inconvenience is stood earlier into screw (bolt); Or operating personnel's both hands touch less than the nut aperture the just very difficult screw (bolt) admittedly of twisting.The parts of some precision instrument are installed, and its nut bore may be in close, crowded, depths, also usually are the too late point of destination places of hand, and cause difficulty are installed.These instruments generally all must be antimagnetic, and this just makes magnetic screw driver also can't be applied to the installation of this instrument.The somebody also adopts things such as adhesive, is bonding to screw (bolt) as glue, rheum officinale wet goods, is sent to place, nut aperture again.This is also very inconvenient: one, screw (bolt) often bond not firm, are shed to easily in being sent to process in the instrument and are difficult for fetching, and instrument causes damage; Its two, even send in the nut aperture, also screw (bolt) is polluted, also need remove pollution.

The purpose of this utility model will be improved existing screwdriver exactly, the hinge head and the screw (bolt) of screwdriver can closely temporarily be linked together, make the screw (bolt) that is sent to nut aperture place can be not crooked, do not come off, stand up hand-hole like clockwork, thereby finish the installation task of screw (bolt).

Task of the present utility model is that following technical scheme realizes: in the structure that is had of former screwdriver, as at the intrinsic entity knife bar of wooden handle handgrip interpolation, the hinge head of knife bar or be quincunx or be on the isostructural basis of " one " word formula, increase can clamping screw (bolt) grasping mechanism.Here it is outside the entity knife bar, the bushing type jaw that suit one can slide on this knife bar pole face.On the end face of the upper sleeve of this bushing type jaw, be provided with uniform three pieces or two pieces of elasticity claw hooks.All claw hooks can with a hinge interoperation of entity knife bar, clamping is lived the cap head of screw (bolt), that is: the hinge head of knife bar (or quincunx or " one " word formula) roof pressure cuts with scissors in the groove at the cap head of screw (bolt), cap head and bottom surface thereof that screw (bolt) was clamped, hooked to all claw hooks then by its shank, bill that stretches out entity knife bar hinge head.Screw (bolt) just can constitute connect admittedly all-in-one-piece with the entity knife bar and firmly grasps state like this, is sent to the nut bore place.At the sleeve pipe tail end of this bushing type jaw, being provided with turns up prolongs ring.On this ring, carriage has the spring that overlaps on the hypomere sleeve pipe that is through the bushing type jaw.This spring again by gland in the sheath of thickness reducing.Promptly the thin diameter section inner cover of this sheath is with: the bushing type jaw; Its wide section inner cover is with: hypomere sleeve pipe, the spring ring that turns up.The wide section of this sheath is fixed on the wooden handle handgrip.Overlap on solid this particle size barrel more than handgrip at the wide section overcoat, also be provided with two axial port grooves symmetrically.This mouthful groove is to prolong two symmetries on the ring and push away and turn round turning up admittedly for connecting, and correspondingly stretches out this mouthful groove and is provided with.Manually this two symmetry pushes away and turns round, and can make turns up prolongs ring and upwards slide along the entity knife bar together with the bushing type jaw.Because spring housing bears down on one in the wide section overcoat, can make the bushing type jaw that the potential energy of downward retraction is arranged.Bushing type jaw in the thin diameter section of this sheath and its is and is slidingly matched.The outer running-on of this thin diameter section can be oppressed all claw hooks of rubber-like and be drawn in centripetally around the entity knife bar.Promptly have the shank of the outer running-on of sufficiently long thin diameter section, and all bills are drawn in centripetally in a quincunx hinge lobe groove of entity knife bar, or draw " one " word formula hinge blade both sides symmetrically at the entity knife bar along all claw hooks of compressing.

When using this to make things convenient for screwdriver, pushing away that the promotion wide section puts outward earlier turned round upwards, the bushing type jaw is moved up thereupon, release all open elasticity claw hooks outside the hinge head of entity knife bar, the cap head of screw (bolt) is positioned in all claw hooks gap, unclamp to push away and turn round, because the downward roof pressure of spring, all claw hooks on the bushing type jaw have the trend that thereupon contracts in the thin diameter section overcoat, simultaneously then roof pressure is in the hinge groove of screw (bolt) cap head for the hinge head of entity knife bar, and screw (bolt) cap head and bottom surface thereof are just in time clamped, hooked to all claw hooks by shank, bill.Thereby constitute the promptly solid state of company of screw (bolt).Be sent to nut aperture place with screwdriver this moment, screw (bolt) can not crooked, not come off ground, stand in the nut aperture like clockwork, after this twist 360 °～720 ° of rotary screw cutter wooden handle handgrips again, screw (bolt) also rotates two to three thereupon to be buckled, and can not split away off.After screw (bolt) is positioned in the nut bore, one push away and turn round gently again, make all claw hooks break away from screw (bolt), contraction is gone back, and use the hinge head of entity knife bar this moment again, tightens screw (bolt) and just be very easy to make things convenient for.

This screwdriver is easy to use, increases work efficiency, and makes also simplyr, is a kind of desirable five metals erecting tools.

Accompanying drawings embodiment of the present utility model: the convenient screwdriver of making (quincunx hinge head), as shown in Figure 1: Fig. 1 is the convenient screwdriver section of structure.Have among Fig. 1: wooden handle handgrip 1, entity knife bar 2, bushing type jaw 3, elasticity claw hook 4 turns up and prolongs ring 5, spring 6, sheath 7, thin diameter section overcoat 7 ', wide section overcoat 7 " and, mouthful groove 8 pushes away and turns round 9.Fig. 2 is that Figure 1A is to knife bar hinge head and elasticity claw hook distribution schematic diagram.Have among Fig. 2: entity knife bar 2, bushing type jaw 3, the distribution of elasticity claw hook 4, thin diameter section overcoat 7 '.Fig. 3 is convenient screwdriver " " word formula hinge head part structural representation.Have among Fig. 3: entity knife bar 2, bushing type jaw 3, elasticity claw hook 4, thin diameter section overcoat 7 '.Fig. 4 is: Fig. 3 B is to " one " word formula hinge head and elasticity claw hook distribution schematic diagram of knife bar.Have among Fig. 4 and show three pieces of elasticity claw hook 4 distributions.

Claims

1, a kind of convenient screwdriver, it includes: wooden handle handgrip (1), insert solid entity knife bar (2) in this handgrip (1), it is characterized in that: outside the entity knife bar, be set with the bushing type jaw (3) that can on this knife bar (2) pole face, slide, this jaw (3) but top be provided with the grasping mechanism of clamping screw (bolt), be provided with to turn up at the sleeve pipe tail end of this jaw (3) and prolong ring (5), this ring (5) bracket has cover to be through spring (6) on this jaw (3) hypomere sleeve pipe; By a sheath (7) that is fixed in the thickness reducing on the wooden handle handgrip (1), with bushing type jaw (3) enclosure in thin diameter section overcoat (7 '), with the hypomere sleeve pipe and turn up and prolong ring (5), spring (6) enclosure in the wide section overcoat (in 7 "); (7 ") are overlapped on the particle size barrel more than solid this handgrip (1) at the wide section overcoat, also be provided with two axial port grooves (8) symmetrically, this mouthful groove is extended with in (8): connect and to prolong two symmetries on the ring (5) and push away and turn round (9) turning up admittedly.

2, according to the described convenient screwdriver of claim 1, it is characterized in that: the grasping mechanism of described clamping screw (bolt), be that uniform three pieces or two pieces of elasticity claw hooks (4) are set on the end face of bushing type jaw (3) upper sleeve, when the shank of this all claw hook (4) is subjected to the compressing on thin diameter section overcoat (7 ') mouthful edge, and the bill (4 ') of all claw hooks (4) is drawn in centripetally around the hinge head of entity knife bar (2); When this all claw hook (4) prolonged by turning up two symmetries on the ring (5) push away turn round (9) release thin diameter section overcoats (7 ') mouthful along and when stretching out the hinge of entity knife bar (2), the bill of all claw hooks (4) can hook the cap head bottom surface of screw (bolt), then roof pressure is in screw (bolt) cap head hinge groove for the hinge head of entity knife bar (2), and formation screw (bolt) is even consolidated all-in-one-piece with the entity knife bar and firmly grasped state.

3, according to claim 1 and 2 described convenient screwdrivers, it is characterized in that: described entity knife bar (2), in the plum blossoms petal slot of its quincunx hinge head, can draw the bill of all elasticity claw hooks (4) entad in; Its " one " word formula is cut with scissors the blade both sides of head, can draw the bill of all elasticity claw hooks (4) entad symmetrically in.