CN201098858Y

CN201098858Y - Torque force type screwdriver

Info

Publication number: CN201098858Y
Application number: CNU2007201253633U
Authority: CN
Inventors: 庄惟捷
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-15
Filing date: 2007-08-15
Publication date: 2008-08-13
Anticipated expiration: 2017-08-15

Abstract

The utility model relates to a torque force type screwdriver, which comprises a hand lever and a drive rod. A holding section is arranged on the top of the hand lever; an axle hole, the dimension of which is slightly less than that of a jack post, is opened on the bottom of the hand lever along the axial direction; the axle hole is a stepped hole; a buckling part is formed corresponding to a flaunching part; a driving head is arranged on the bottom of the drive rod, the jack post extends from the top of the drive rod along the axial direction; at least one kurf is opened on the surface of the drive rod along the horizontal direction, the flaunching part is arranged in a protruding way along the radial direction to buckle with the buckling part, so as to ensure that the hand lever and drive rod cannot be separated along the axial direction; a friction section is arranged in the axle hole in the protruding way along the radial direction; the friction section girds the jack post to generate a certain amount of torque forces to form the torque force type screwdriver.

Description

The torsion type screwdriver

Technical field

The utility model is a kind of screwdriver, refers in particular to a kind of torsion type screwdriver.

Background technology

By screwdriver is locking and the dismounting that is used for screw, and it is to utilize the driving head of screwdriver end to embed the head recess of screw, and then utilizes the handle forward and backward of screwdriver to drive screw locking or get loose, and uses for use in the combination of various utensils is fixing.

And the drive rod that screwdriver mainly is a handle and by a predetermined length dimension has a driving head is combined, this driving head generally is divided into yi word pattern or cross, to cooperate the yi word pattern or the cross groove of screw head, be beneficial to the locking of this screw or get loose.

In fact, the torsion of conventional screw bottle opener is that the application of force size according to the user decides, therefore, if be used for the optics device with traditional screwdriver, for example camera lens adjustment of monitor is because its torque value can't be fixed, so that be in course of adjustment, often excessive because of torsion, and the eyeglass lock is broken, thus cause great loss.

And for avoiding the user in using the screwdriver rotation by closure, for example during screw, its employed power exceeds the scope that screw can bear, and then cause the tooth that collapses of screw, the existing at present screwdriver that utilizes the drive mechanism of spring and steel ball in order to the output of restriction torsion, when this bottle opener uses, if torsion is excessive, steel ball promptly can separate with spring, and then cause screwdriver to separate with its driving head, so that allow screwdriver and driving head form idle running, thereby can control screwdriver and can only export a certain amount of torsion, to avoid by the damage of closure.

And this utilizes the screwdriver of spring and steel ball transmission, though it can control torsion in a certain amount of output, right because spring and steel ball contacts for point when slippage, and it causes the assembly distortion easily and damages, thereby the torsion output valve rather unstable of its restriction.In addition, its lattice are in the drive mechanism of aforementioned spring and steel ball, and the screwdriver size can't be dwindled effectively, so that the locking of precision instrument is had no the ample scope for abilities, and demand urgently improving.

The utility model content

The purpose of this utility model is to provide a kind of torsion type screwdriver, in the hope of socket joint type (radial friction formula) rotating shaft being combined with screwdriver, make its torsion have a certain amount of output advantage, and do not have known spring and distortion of steel ball assembly and the disappearance of damaging.

For achieving the above object, the torsion type screwdriver that the utility model provides, it comprises:

One handle, its top is provided with a holding section, and the axis hole of a undersized in jack-post axially opened in the bottom, and it is single order shape hole, and forms a snapping portion corresponding to lip portions;

One drive rod, its bottom has a driving head, the top extends axially a jack-post, its surface level is to opening at least one dissected valley, and the radially prominent lip portions of establishing, with snapping portion snapping each other, make the unlikely axial separation of this handle and drive rod, and this shaft hole diameter is established a friction section to prominent, and it tightens this jack-post, forms to form a certain amount of torsion output.

Described torsion type screwdriver, wherein this holding section presents the prominent rib of ring-type plurality of parallel by arrangement and is formed.

Described torsion type screwdriver, wherein this jack-post is axially opened a post groove that communicates with dissected valley, ccontaining lubricating oil in it.

Described torsion type screwdriver, wherein this jack-post is provided with an oil storage plane around each dissected valley.

Described torsion type screwdriver, wherein the openend of the free end of this jack-post and axis hole is equipped with a chamfering.

Described torsion type screwdriver, wherein this driving head is the tenon of yi word pattern, cross, geometric modelling, or inner embedding hole is the sleeve of geometric modelling.

Described torsion type screwdriver, wherein this torsion is output as between the 0.1kgf/cm to 10kgf/cm.

Via enforcement of the present utility model, this screwdriver is by the snapping effect between jack-post and axis hole, and unlikely axial separation, in addition by between the two friction area, and determines a certain amount of torsion output.In addition, the axial post groove of opening of this jack-post communicates with dissected valley, ccontaining its interior lubricating oil can be derived; And this jack-post mills into an oil storage plane around each dissected valley, can increase when rotating sliding along sense.In addition, the driving head of this drive rod can be the tenon of yi word pattern, cross, geometric modelling, or inner embedding hole is the sleeve of geometric modelling, and enlarges the scope of application of the present utility model.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model torsion type screwdriver.

Fig. 2 is the three-dimensional exploded view at another visual angle of the utility model.

Fig. 3 is the stereogram of the utility model group after upright.

The profile of Fig. 4 for being intercepted along line A-A among Fig. 3.

The specific embodiment

For further specifying concrete technology contents of the present utility model, at first see also accompanying drawing.

As shown in Figures 1 to 4, basically, torsion type screwdriver of the present utility model is by one handle 1, and a drive rod 2 combines.

Wherein, this handle 1 is a body of rod, its upper end has a holding section 11, for example presents the prominent rib of ring-type plurality of parallel by arrangement and is formed, to increase frictional force, gripping and turn in order to operator's finger, in fact, this holding section 11 does not exceed with aforesaid prominent rib, and it can also be the groove of known embossing or depression, only this is a known technology all, does not give unnecessary details at this.

And the utility model handle 1 is different from the known technology part and is, its lower end axially open a undersized in after chat the axis hole 12 of jack-post 22, both are rabbeted via known tight fit mode, promptly form the pivot structure that a tool is stagnated locating effect.This axis hole 12 is single order shape hole, and lip portions 222 positions of inner corresponding jack-post 22 and size have a snapping portion 121, with group immediately, these lip portions 222 snappings also are placed in the snapping portion 121, after making jack-post 22 and axis hole 12 sockets, promptly form buckle state, and unlikely generation axial separation.Moreover these axis hole 12 inner dashing forward are established a friction section 122, but these jack-post 22 surfaces of its packing, and form desired torsion according to this, and by the number of this friction section 122, and torsion can be adjusted between the 0.1kgf/cm to 10kgf/cm, for use in the locking of precision instrument with jack-post 12 contacts area.

Drive rod 2 also is a body of rod, and its external diameter is to be equal to handle 1 for good, and its bottom is provided with a driving head 21, this driving head 21 can be the tenon of yi word pattern, cross, geometric modelling when implementing, even for inner embedding hole is the sleeve of geometric modelling, only this is a known technology all, does not intend giving unnecessary details at this.

Be that its top axial extends a jack-post 22 and the utility model drive rod 2 is different from the known technology part, this damaged surface level is to opening at least one dissected valley 221, to provide this jack-post 22 suitable elasticity.These jack-post 22 surfaces have a lip portions 222, and the axis of centres is to opening a post groove 223, and it communicates with those dissected valleys 221, and inside can ccontaining lubricating oil, makes it can pass through dissected valley 221, and form lubricant effect.Especially, this jack-post 22 has around each dissected valley 221, for example mills into an oil storage plane 224 with milling cutter, with as oil storage usefulness, and can increase when rotating sliding along sense.

In addition, can interlocking successfully link for making jack-post 22 and axis hole 12, so the arrival end of the free end of jack-post 22 and axis hole 12 is equipped with a

chamfering

225 and 123, the difficulty of contraposition when avoiding assembling.

This handle 1 and drive rod 2 behind axis hole 12 and jack-post 22 formed pivot structure snappings, promptly become screwdriver as shown in Figure 3 between the two; And as shown in Figure 4, after promptly representing this handle 1 and drive rod 2 combining, this axis hole 12 is illustrated with the configuration of jack-post 22 associated components.

The utility model is when practical operation, at first the driving head 21 of screwdriver is aimed at precision instrument, for example the head recess of the camera lens peripheral screws of monitor is rotated this grip part 11 with finger then, so that carry out sealed adjustment, in sealed process, when not surpassing default torque value, this screw is sustainable to be locked, rotated to the location and work as screw, and when surpassing default torque value, then axis hole 12 can form idle running on jack-post 22, and unlikely that the eyeglass lock is broken.Therefore, can avoid, torsion be exceeded be can bear scope and the loss that causes by closure because of sealed improper.

That the utility model disclosed is a kind of of preferred embodiment, and claim category of the present utility model is not all taken off in Ju Bu change or modification and come from technological thought of the present utility model and be what those skilled in the art were easy to know by inference such as.

Claims

1. a torsion type screwdriver is characterized in that, comprising:

2. torsion type screwdriver according to claim 1 is characterized in that, wherein this holding section presents the prominent rib of ring-type plurality of parallel by arrangement and formed.

3. torsion type screwdriver according to claim 1 is characterized in that, wherein this jack-post is axially opened a post groove that communicates with dissected valley, ccontaining lubricating oil in it.

4. torsion type screwdriver according to claim 1 is characterized in that, wherein this jack-post is provided with an oil storage plane around each dissected valley.

5. torsion type screwdriver according to claim 1 is characterized in that wherein the openend of the free end of this jack-post and axis hole is equipped with a chamfering.

6. torsion type screwdriver according to claim 1 is characterized in that, wherein this driving head is the tenon of yi word pattern, cross, geometric modelling, or inner embedding hole is the sleeve of geometric modelling.

7. torsion type screwdriver according to claim 1 is characterized in that wherein this torsion is output as between the 0.1kgf/cm to 10kgf/cm.