CN2044202U - Multi-purpose screw driver with release - Google Patents

Abstract

The utility model provides a multi-purpose screw driver with an escapement device. The multi-purpose screw driver with the escapement device is a hand tool which is used for fastening, disassembling, and clamping screws, bolts, and nuts. The multi-purpose screw driver with the escapement device is composed of the escapement device, a knife rod, and a handle. The knife rod which can be changed is adopted and is connected by using a thread clamping head. The escapement device can clamp the parts of the types of a screw, a bolt, a nut, etc. The multi-purpose screw driver with the escapement device can be used in narrow space which can not be extended by a hand. The multi-purpose screw driver with the escapement device can be conveniently aligned with a thread hole, when disassembling, the multi-purpose screw driver with the escapement device can firmly catch the parts, and the parts are avoided from dropping into a machine position in which the parts are not easily taken out. The multi-purpose screw driver with the escapement device is convenient to be used for the assemblage and the maintenance of an apparatus, an instrument, a domestic appliance, and universal machinery.

Description

Multi-purpose screw driver with release

The utility model relate to a kind of be used for fastening, dismounting and particularly can clamp screws, the hand tools of bolt or nut.

Existing general screwdriver will reach the purpose of fastening, dismounting and clamp screws, must have the knife bar and the handle of difformity cutter head.The manifold driver bit is changed into two halves, and can remain and open, " carrying the formula screwdriver " that can pinching screw when the loading and unloading interrupted screw (CN86201409); Utilize the magnetic force suction-operated, " magnetic screw driver " that carry out the screw loading and unloading (CN87203084); Also have and on the screwdriver knife bar, put " screw clamper " (CN86208177); Perhaps be with flexible pincer-like copper sheet filling in to burn-on on the copper pipe of screwdriver, " bottle openers of band tweezers " (" electronics newspaper " on January 13rd, 1985); Or boring two spring leafs of riveting over are called " self-control clamp screws change cutter " (" electronics newspaper " on October 27th, 1985) on screwdriver rod.These technique known all are in order to solve on instrument, instrument, household electrical appliance and universal machine, the instrument used of conveniently assemble and disassemble screw greatly, be specially adapted to the narrow positions mounting or dismounting screw that some hands can not stretch into, but they all lack multiduty characteristics, and when dismounting also have to take place screw fall at the position that is difficult for taking out may, also being difficult for of having makes screw aim at screw, in operation inconvenient part arranged also.

The purpose of this utility model, be to provide a kind of screwdriver of novelty, but adopt a cover release and a changing knife rod, reaching can be fastening, the purpose of dismounting and clamp screws, bolt or nut, and can be firm get the securing member that also can be easy to bleed off these types.

The utility model is finished by following approach, and screwdriver is made of release, knife bar and handle three parts.Release is mounted in a kind of pick-and-place screw in the middle of the handle, the operating mechanism of screw bolt and nut, it by button, stop nut, spring, clamp down on pipe and the escapement pawl is formed.The escapement pawl can use spring steel wire, metal strip spring thin slice to make, circular, triangle, rhombus, ellipse, crescent are done by universal or special requirement in the termination of pawl ... different shape, the cross section is done in the arc-shaped, be beneficial to pick-and-place screw, screw bolt and nut securely, and can reach beyond the screwdriver knife rod head, in the withdrawal head, by clamping part classification decision escapement pawl extension elongation.Button can be made with plastics such as lucite, bakelite or metal, and the connection of it and escapement pawl can be perforation or spiral marking connection.Clamp down on pipe the escapement pawl is played the position limitation protection effect; available plastics or metal material manufacturing; its end can insert in the handle screw thread chuck open slot and knife bar clips together; section configuration is looked knife bar termination shape; decision has or not axial groove, so that be enclosed within on the knife bar.

Multiple interchangeable screwdriver knife bar is arranged, and knife rod head makes manifold, crosshead, interior (outward) turret head, interior (outward) square toes, interior (outward) trigonocephalia, five angle heads, anistree head, bihexagonal head respectively ... Deng; The other end is made bead or other spline form of two symmetries, is convenient to insert in the handle screw thread chuck and the transmission moment of torsion, and there is a dark wide suitable groove on the knife bar both sides, so that the escapement pawl is installed, knife bar is made of a steel usually.

Handle is made with engineering plastics, hard rubber, timber or metal, one end has been done a fluting securely and has been with flexible screw thread chuck, and outer appearance normal screws cutter is the same, makes the shape of trough of belt, non-slip in easy to use, and can produce moment of torsion.Special-purpose can not do the screw thread chuck, makes a kind of screwdriver such as manifold screwdriver of knife bar head ...

The utility model is compared known technology and is had following advantage: had release to have the multiple function of fastening, dismounting and clamping; But there is changing knife rod just to can be used for screw, the multiple part of screw bolt and nut, has versatility, one-object-many-purposes, the value volume and range of product that be convenient to assemble, maintenance work reduces instrument.Release can be caught part securely, stretches the narrow space of not entering at some hands, aims at screwed hole easily, and part can not fall the position of taking out being difficult for yet; In open position, must not clamp screw, bolt or nut, rapid convenience simple to operate with the another hand or with tweezers.After bleeding off part, after the escapement pawl falls back on driver bit, guarantee the function that screwdriver is common, be specially adapted to assembling, the maintenance work of instrument, instrument, household electrical appliance and universal machine.

The utility model has following accompanying drawing:

Fig. 1 is the vertical half sectional view of a kind of manifold screwdriver of the present utility model;

Fig. 2 is that the escapement pawl is got the slotted countersunk flat head screw schematic diagram;

Fig. 3 clamps down on pipe and handle screw thread chuck connecting end schematic diagram;

Fig. 4 is a screwdriver head left side view;

Fig. 5 is the shape schematic diagram of escapement pawl;

Fig. 6 is a kind of form of knife bar.

Be described in further detail below in conjunction with accompanying drawing:

The multipurpose screwdriver of band release is made of knife bar (1), handle (2) and release parts such as (3).Release (3) comprises button (4), stop nut (5), spring (6), clamps down on pipe (7) and escapement pawl (8).When pressing the button (4), escapement pawl (8) just stretches out driver bit, can catch screw, bolt or the nut that will install or pull down.After screwing in several buttons during assembling, just fall back on driver bit back (see figure 4), make screwdriver continue to apply moment of torsion and be firmly fastened to screw, bolt or nut by button (4), escapement pawl (8).After as long as part withdraws from a part, press the button (4) escapement pawl (8) and stretch out and catch the part head that unloads during dismounting, continue to rotate to and finish dismantlement work.

That the head of escapement pawl (8) can be done is circular, triangle, rhombus, ellipse, crescent ... etc. the shape (see figure 5), do in the arc-shaped with the part contact site.Clamp down on pipe (7) and be enclosed within on the knife bar (1), play the position limitation protection effect of escapement pawl (8), its section configuration can change by the knife bar shape, and an end has long and short two group inserted sheet, is convenient to connect (see figure 3) with handle screw thread chuck.The nose shape of knife bar (1), press the form of screw, bolt or nut, make manifold, crosshead, interior (outward) turret head, interior (outward) square toes, interior (outward) trigonocephalia, interior (outward) five angle heads, interior (outward) anistree head, interior (outward) bihexagonal head respectively ... Deng, the other end is made two beads or other spline form of symmetry, is convenient to connect and transmission moment of torsion (see figure 6) with handle screw thread chuck.Handle (2) is except release (3) is installed in the centre, and the one end has the screw chuck, and outer surface has the groove (see figure 1) in order to transmit the moment of torsion handled easily.

Claims (3)

1. screwdriver; particularly with the multipurpose screwdriver of release; form by release, knife bar and handle; it is characterized in that: release has the escapement pawl of an energy pick-and-place screw, screw bolt and nut, and the position limitation protection of escapement pawl is with clamping down on pipe and operation button.

2. screwdriver according to claim 1, it is characterized in that: but changing knife rod is arranged, knife rod head can be made manifold, crosshead, interior (outward) turret head, interior (outward) square toes, interior (outward) trigonocephalia, interior (outward) five angle heads, interior (outward) anistree head, interior (outward) bihexagonal head, the other end has two beads or other spline-shaped, and two grooves that the escapement pawl is installed are arranged on the knife bar.

3. screwdriver according to claim 1 and 2, it is characterized in that: the escapement pawl is made with steel wire or spring leaf, the head of circle, triangle, rhombus, ellipse, crescent various types is arranged, and its cross section is done in the arc-shaped.

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