CN201095087Y

CN201095087Y - Box wrench equipped with reversing ratchet wheel

Info

Publication number: CN201095087Y
Application number: CNU2007201472999U
Authority: CN
Inventors: 罗伯·保罗·幸库尔顿
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-30
Filing date: 2007-05-30
Publication date: 2008-08-06
Anticipated expiration: 2017-05-30

Abstract

A rapid socket wrench can greatly decrease required force for disassembling a screw cap or a bolt. The wrench includes a large helical gear and a small helical gear respectively assembled on a driving shaft and a steam output shaft, a torsion shaft located at the outer end of the steam output shaft, and a reverse ratchet mechanism which can lock and fasten the torsion shaft. Compared with conventional wrench, the special structure and configuration model of components greatly decreases the required force for disassembling a screw cap or a bolt. The utility model provides an improved T-shaped handle which can be co-used with a wrench tool of the driving shaft rotating around the axial line. The T-type handle has a substantial L-shaped terminal component. The shorter foot of the terminal component extends outward at an angle, such as 45 degrees. The terminal component can rotate around the driving shaft at the middle, and an angle is formed between the terminal component and the driving shaft. Thereby the resulting lever arm is parallel to the driving shaft when used.

Description

Dispose the box spanner of the ratchet that reverses

Technical field

The utility model is with fastening or to loosen the hand-held tool of nut relevant, particularly relate to and a kind ofly need not spend the box spanner that great strength too just can rotating screw cap, because this box spanner has the torsion output function that axis rotates, Gu this is also can the easy operation nut fastening or loosen in the operating environment of confined space.

Background technology

The box spanner structure of commonly using article is substantially the cephalic par integral type and is extended with a suitable long shank, cephalic par is provided with vertically to circular room for one twisted positioner, be provided with ratchet and twisted both sides are provided with the brake block that correspondence is stirred by the room wall, adjust button dextrorotation or left-handed in the operation of twisted crown end, then can stir brake block outstanding conversion in twisted side, and energy or right side or left side and the set ratchet engagement of room wall, make the twisted head can work or dextrad or the output of left-hand torsion in the cephalic par room, the operation hexagonal (hexagon)nut be fastening or loosen.In fact, commonly use box spanner in the whether fastening turn of operation hexagonal (hexagon)nut, the square embedding head that is twisted head is the torsion output, and shank is the torsion input of pulling, be that torsion is output as the hexagonal (hexagon)nut of conflicting vertically downward, and the torsion input of pulling is the horizontal angle of cut with it, when gripping the shank operation, pulls on palm toward covering stroke, be to be difficult to remain on certain level height (upper and lower irregular rocking), and have influence on twisted stable conflict hexagonal (hexagon)nut, just have the instability of torsion output eventually, the operating difficulties degree is arranged and show; Moreover, the fastening initial stage of hexagonal (hexagon)nut, hexagonal (hexagon)nut spiral shell on object advances not reach suitable fastening force as yet, and shank prepares time plate stroke of next torsion input, hexagonal (hexagon)nut is not still had a fastening force and is broken through on twisted head, this moment, the hexagonal (hexagon)nut of twisted head and conflict with it can be driven synchronously by shank, circled round towards losing fastening direction, and show having some setbacks and degree of difficulty of the fastening initial stage operation of hexagonal (hexagon)nut was arranged; Person again, long slightly and do not reach suitable fastening force as yet as hexagonal (hexagon)nut length, and shank is difficult to the maintenance level and pulls toward covering, this then can have influence on twisted head and accurately press and touch the nut spiral shell and advance, and causes fastening operation failure easily.

The existing operational deficiencies of the box spanner of above-mentioned known technology, for a long time always by the consumer the sick and puzzlement of dirt, therefore whether can provide a kind of possess toward covering pull and axis rotates the box spanner of dual torsion output form, be necessary it is further improved.

Summary of the invention

The purpose of this utility model is the defective that overcomes above-mentioned prior art, the box spanner that provides a kind of configuration to reverse ratchet, and it mainly can make box spanner possess the torsion output function that axis rotates; The structure of this spanner is pocket and reliable, and is specially adapted to can't use near reaching limited place, space usually.

Spanner of the present utility model can under situation with no difficulty, dismantle can't be approaching nut, it can be adjusted easily and apace, and can not be ruptured or the facts of ability to work loss; Spanner structure of the present utility model is firm, durable, simple and inexpensive, and extremely is fit to use.

The purpose of this utility model realizes by following technical proposals, and the reverse box spanner of ratchet of a kind of configuration provided by the utility model comprises:

One elongate shaft portion;

One is installed in the driving shaft in this shank in a coaxial fashion;

One is installed in the large helical gear on the end of this driving shaft;

One is installed near this driving shaft handle component on the end in addition, and this handle component comprises an intermediate portion and is hubbed on crossbar member on this driving shaft, and this crossbar member one end at least is to become extension angularly with the major part of crossbar member;

The stop member of being located on this driving shaft surpasses the formed certain angle of this driving shaft normal relatively in order to prevent this crossbar member rotation, this crossbar member at least between the extension line of one end and this bar major part formed angle be the complementary angle of this certain angle, therefore, this boom end will be parallel with this driving shaft when this bar member is connected with this stop member, must make this end parallel with this driving shaft when a kind of mode of operation;

This driving shaft is to consist of a single unit system with this large helical gear, can directly be with this helical gear is rotated to rotate this handle component, and this driving shaft is that a helical gear from driving shaft one end extends to the driving shaft single straight line continuous axle of the handle on the end in addition;

One is installed on the force-output shaft of close this large helical gear in this cephalic par, and this force-output shaft is to become vertical direction to extend with this driving shaft;

One is installed on this force-output shaft and is equipped with the bevel pinion of body, and this bevel pinion is and the engagement of aforementioned large helical gear;

One be fixed on this force-output shaft in order to do with coaxial torsion shaft, this torsion shaft is to stretch out from this force-output shaft;

One is equipped with the gasket plate than minor diameter inside, should be to be used as thrust washer than minor diameter inside, and this gasket plate is mounted on this bevel pinion body;

Be equipped with the ratchet of most teeth on one its circumference, this ratchet is mounted on this torsion shaft and can rotates together thereupon; But and, rotate to prevent this torsion shaft with the device of delivery mode and ratchet engaged.

At box spanner of the present utility model, it is equipped with a large helical gear and bevel pinion, and each gear is attached to respectively on one; Large helical gear is to be attached on the T type handle, and bevel pinion then is attached in the force-output shaft mechanism.

In one embodiment, be equipped with a pair of pad on each; Rotate T type handle simultaneously and can be with and make driving shaft, force-output shaft and torsion shaft rotation holding spanner handle portion; In one embodiment, inner end cap and outer end cap are mounted in cephalic par is run through in the cephalic par outside near torsion shaft position; The common mating reaction of described end cap forms locked mechanism; When end cap was in locking position, the utility model spanner was able to use as the conventional spanner; When end cap is in lockset position of coupler, be able to hand and rotate T type handle, impel torsion shaft to rotate; The gear of the utility model spanner can freely rotate to either direction, and gear when size must change according to the spanner size.

Use the ratchet that reverses in another embodiment, its include one with the ratchet of torsion shaft engagement, and the device that this ratchet that locks is used rotates to prevent torsion shaft.

The T type handle that is used in the utility model spanner must be equipped with L type end member; This end member has with for example outward extending shorter foots of angle at about 45 degree angles, and the center of this end member is on the vertical shaft that is hubbed in the pinch bar, makes the both sides of main shaft respectively form for example about 45 angles of spending angles.

Compare with conventional spanner, the utility model spanner can significantly reduce to dismantle nut or the required power of bolt; The utility model spanner utilizes leverage that dual mode is arranged, but not only utilizes leverage according to a kind of mode as conventional spanner: (1) provides torque, so that with nut or bolted or loosen; (2) provide speed, the utility model spanner can make nut or bolt rotate two circles when turning handle one circle, and bolt and nut are moving to be less than and the rotation of spanner a few days ago one circle only can make ¹/ ₄Circle.

Arrive under other characteristics of the present utility model comprise: (1) necessary operations space is little than conventional spanner; (2) owing to repeatedly repeating, so effective especially for the loadmaster bolt; Also effective especially for bolt loading and unloading with minimum drag, because other conventional spanner needs resistance; (3) because pinch bar does not move disengaging nut or bolt so wrench socket is difficult for skidding.

Description of drawings

Fig. 1 is the assembling cross sectional side view of the utility model box spanner;

Fig. 2 is Fig. 1 right end view, and wherein outer end cap is removed;

Fig. 3 is the outer end cap plan view of Fig. 1;

Fig. 4 is the utility model second possible embodiments end-view that is equipped with the ratchet that reverses;

Fig. 5 is the side view of Fig. 4 embodiment;

Fig. 6 is Fig. 4 enlarged drawing, shows the schematic diagram with three relevant positions of ratchet pawl;

Fig. 7 is Fig. 4 enlarged drawing, shows the schematic diagram with three relevant positions of ratchet pawl;

Fig. 8 is Fig. 4 enlarged drawing, shows the schematic diagram with three relevant positions of ratchet pawl;

Fig. 9 is the end-view of the utility model the 3rd possible embodiments;

Figure 10 is the cross sectional side view of Fig. 9;

Figure 11 is the exploded perspective view of Fig. 9;

Figure 12 is the plan view of Fig. 9 locking component;

Figure 13 is alternative another possible embodiments of the T type handle figure that is used in the utility model;

Figure 14 is the exploded perspective view of Figure 13 T type handle;

Figure 15 is the lever operated schematic diagram of Figure 13 T type.

Description of reference numerals: 10-spanner; The 12-driving shaft; The 14-force-output shaft; The 16-large helical gear; The 18-bevel pinion; The 20-shank; 21-holds and holds end; The 22-pad; The 24-pad; The 25-pad; The 26-pad; The 28-pad; The 30-cephalic par; The 32-torsion shaft; 34-T type handle; The 36-inner end cap; The 38-opening; The 40-screw; The 42-component lug therein; The 44-stop member; The 48-outer end cap; The 50-planar portions; 52-box portion; The 54-endoporus; The 56-groove; The 58-spring mechanism; The 60-opening; The 70-ratchet that reverses; 72-box portion; The 74-hole; The 76-screw; The 78-ratchet pawl; The 79-bottom; 80-pawl shell; The 82-spring; The 84-drive surfaces; The 86-tooth; The 100-spanner; The 102-cephalic par; The 104-gasket plate; The 106-force-output shaft; The 108-ratchet; The 110-tooth; The 112-locking component; 114-tooth portion; The 116-groove; The 118-ball; The 120-spring; The 124-groove; The vertical groove of 125-; The 126-inner surface; 127-gear body; The 128-clasp; The 129-helical gear; The 130-outer buckle ring; The 131-axial region; The 132-check spring; The 133-axial region; The 134-ball; The 135-axial region; The 136-clasp; The 137-groove; The 138-driving lever; The 140-shank; The 141-lug; The 144-pad; The 146-driving shaft; 147-gear body; The 149-helical gear; 150-T type handle; The 152-driving shaft; The 154-lever arm; The 156-pars intermedia; The 158-spring catch; The 160-groove; The 162-hole; The 163-parallel ends; The 164-hole; The 166-internal end surface; The 167-internal end surface.

The specific embodiment

Shown in the utility model embodiment in Fig. 1～3, box spanner 10 has driving shaft 12 and force-output shaft 14 fast, and intermeshing large helical gear 16 is to be installed in respectively on driving shaft 12 and the force-output shaft 14 with bevel pinion 18.

Driving shaft 12 is to be installed in the shank 20, makes that rotation freely in being installed in shank one end

Upper gasket

22,24 respectively; Force-output shaft 14 is to be installed in a similar manner in a pair of

pad

26,28, and described

pad

26,28 is mounted in the cephalic par 30 that is formed at shank 20 upper ends; Torsion shaft 32 is to be located on the outer end of force-output shaft 14; Above-mentioned pad is the bearing of each respective shaft, and helps large and small

helical gear

16,18 to keep suitably engagement; Shank 20 is the extra bearing of driving shaft 12, force-output shaft 14 with cephalic par 30, to prevent bending shaft.

Driving shaft 12 is to install with the angle at 14 one-tenth 90 degree of force-output shaft angle; Therefore, by rotate to such an extent that make driving shaft 12, force-output shaft 14 and torsion shaft 32 rotate by the T type handle 34 that is installed on driving shaft 12 lower ends; Pad 25 is that the upper end that is installed on driving shaft 12 is positioned at cephalic par 30, to form a smooth surface for large helical gear 16 usefulness.

T type handle 34 is in order to provide the torque leverage to driving shaft 12; Also must use as hereinafter illustrated L type handle; Handle also may be made in can before and after the two-piece construction of sliding T type or the L type structure desired in order to do forming, it is rotary configured perhaps to be made for two-piece type; The size of shank 20 is to be designed so that people's palm is suitable for holding of grasping and holds end 21; First end cap or the inner end cap 36 that are made for plane institution movement and have a circular central opening 38 are the outsides that are positioned pad 28, and by being fixed in such as screw 40 on the surface of cephalic par 30; Run through the position of first inner end cap 36 at force-output shaft 14, the section of this force-output shaft 14 is the square section by round becoming; Inner end cap 36 is by guaranteeing that by pad 28 is fixed large and small

helical gear

16,18 accurately meshes; The mid portion that is positioned the lower end outer surface of inner end cap 36 is a component lug therein 42, and this component lug therein 42 is in order to the locking spanner; Within the lug 42, outside sweep partly is all circle, and two ends are also rounded, shearing is distributed on the lug 42; This lug 42 is to expand outwardly from its rounded ends that is attached to a bit close lug 42 on the inner end cap 36; This kind configuration makes that the outer end size of lug 42 is bigger, helps locked mechanism to keep engagement during use.

Hemispherical stop member 44 is to be fixed in the outer end of the upper surface of torsion shaft 32 near torsion shaft 32; Stop member 44 is to be assemblied in the groove 56 of second end cap or outer end cap 48, is to be positioned on the outer end of torsion shaft 32 by outer end cap 48; Outer end cap 48 comprises a planar portions 50, and this planar portions 50 is equipped with the box portion 52 of an outward extending square section; Outer end cap 48 has an endoporus 54 that is roughly positive square, and this endoporus 54 is equipped with one and stretches out and the groove 56 parallel with the longitudinal axis of force-output shaft 14; As shown in Figure 1, the size of endoporus 54 just is enough to admit the outer end of force-output shaft 14; The inner of groove 56 ends at the position near planar portions 50; And by this position, planar portions 50 its parts near the upper surface of torsion shaft 32 are to be provided with fillet or chamfer configuration, so that outer end cap 48 is assemblied on the stop member 44.

Spring mechanism 58 is to be positioned between the outer end wall of box-shaped portion 52 of the outer end of torsion shaft 32 and outer end cap 48 with pushing relation; After discharging, the elastic force of spring mechanism 58 must be enough to act on the outer surface of outer end cap 48 when using pressure force inner end cap 36 and outer end cap 48 to separate.

By locked mechanism being engaged by lug 42 and the arbitrary opening on the outer end cap 48 60 on the inner end cap 36 being aimed at, being got; The shape of opening 60 and lug 42 cooperates, and the big outward-dipping part that must be enough to admit lug 42, is to be of a size of big near part within inner end cap 36 than it by the size of the outward-dipping part of lug 42; By holding and hold end 21 so that make the directly nut or the bolts that rotate of pushing institute desire of driving end end 30 by oppressing shank 20 lightly, then inner end cap 36 will move to the concordant position that is close to mutually with the surface of outer end cap 48, must stop torsion shaft 32 to be rotated to cause outer end cap 48; Under this kind locking situation, impose on pressure on the end 21 and use spanner 10 via holding at shank 20 to hold according to traditional approach, hold end 21 and rotate so that hold around the axis of torsion shaft 32;

In case the locking after, spanner 10 will remain in locking position as long as its still under pressure maintenance contact with nut or bolt; This is because lug 42 is provided with outward-dipping slightly inclined plane part, and because hold the cause of holding the application of force on the end 21 and the static(al) of 60 of openings on lug 42 and the outer end cap 48 significantly being increased at shank 20; Act on during use and hold that to hold the static friction power of end on 21 be that elastic force far beyond spring mechanism 58 is for big; Therefore, spring 58 is only to be that spanner 10 is pressed on after pressure on nut or the bolt discharges, and the side has an effect so that inner end cap 36 is separated with outer end cap 48; Outside when mobile when outer end cap 48 in the order of unblanking, stop member 44 stops outer end caps 48 disengaging torsion shafts 32, because stop member 44 will contact the inwall (as shown in Figure 1) of groove 56; Under this kind lockset position of coupler, must use T type handle 34 to control the rotation of torsion shaft 32, so that being difficult to carry out under the situation that maybe can't implement, the conventional spanner operation still can use spanner 10.

Lug 42 must be positioned the lower position of torsion shaft 32 fully, can not interfere the operation of sleeve; Again, outer end cap 48 must be made to have abundant flexible material, and outer end cap 48 must be engaged with lug 42 and separate, and makes outer end cap 48 be easy to relative stop member 44 assemblings.

The advantageous particularly part of the utility model Spanner structure is: when using spanner according to traditional approach, all gears all do not suffer pressure.

In the utility model one embodiment, the diameter of spanner 10 its driving shafts 12 is ³/ ₈Inch, the diameter of force-output shaft 14 is 3/16 inch, and square torsion shaft 32 is of a size of ¹/ ₄Inch; In this embodiment, the diameter of large helical gear 16 is about 1.04 inch, and the diameter of bevel pinion 18 is 0.59 inch; The two the thickness of planar portions of outer end cap 48 and inner end cap 36 is about 1/16 inch, and the length of lug 42 is about 3/32 inch; The diameter of stop member 44 is about 1/16 inch, and the length of groove 56 is about 5/32 inch.

In the embodiment shown in Fig. 4～8, locked mechanism includes the ratchet 70 that reverses, and this ratchet 70 that reverses has one and stretches out and section is the box-shaped portion 72 of square; Reversing is provided with the hole 74 that a section is a square in ratchet 70 and the box-shaped portion 72, and the size in this hole 74 is suitable to be enough to hold square torsion shaft 32; Fixed screw 76 is to be fixed on the torsion shaft 32 with box-shaped portion 72 in order to the ratchet 70 that will reverse.

L type ratchet pawl 78 with bottom 79 be installed in the pawl shell 80 with ratchet 70 engagements of reversing, this pawl shell 80 is to be fixed on the surface of cephalic par 30, ratchet pawl 78 is to move freely along its axis, and pushed by spring 82 and with reverse ratchet 70 engagements; As figure, shown in 7, when ratchet pawl 78 rotation half-turns, the drive surfaces 84 of ratchet pawl 78 will be connected with the offside of the tooth 86 of the ratchet 70 that reverses; In Fig. 8, ratchet pawl 78 has rotated ¹/ ₄Circle also is absorbed in breach, make the ratchet 70 that reverses free rotation and not with ratchet pawl 78 engagements; The suitable opening of pawl shell 80 lower ends can make ratchet pawl 78 locate as described herein.

In this was implemented, the diameter of the ratchet 70 that reverses was 1 inch, and the length of box-shaped portion 72 is ³/ ₈Inch; About 0.13 inch of the lateral dimension of each hook tooth 36, thickness are approximately ¹/ ₈Inch.About 0.131 inch in the gap of tooth and between cog, and the height of each tooth is approximately ¹/ ₈Inch; In this embodiment, the diameter of ratchet pawl 78 its upper ends is about ¹/ ₈Inch.

Shown in Fig. 9～12, show among another embodiment of the utility model alternative constructions among the figure in order to locking spanner 100.In this embodiment, the ratchet 108 with most teeth 110 is to be installed in the driving end end 102 and near gasket plate 104; The center line of this ratchet 108 is identical with the center line of force-output shaft 106, and it is to be attached on the force-output shaft 106; Its locking component 112 that semi-circular profile is arranged is to be hubbed in the cephalic par 102 near ratchets 108, and this locking component 112 and ratchet 108 are that the center line that is positioned at force-output shaft 106 becomes on the vertical plane; The locked mechanism 112 of being used as ratchet pawl 78 effects has two groups of tooth portions 114, and each tooth portion 114 is located on the outer surface of its most close ratchet 108; Two groups of tooth portions 114 are identical, and become symmetry with the center line of 108 on ratchet facing to locking component 112; By by locking component 112 is rotated to either direction, can make tooth 110 engagements of tooth portion 114 and ratchet 108.

As shown in figure 12, locking component 112 its outer surfaces that are positioned at ratchet 108 opposites are provided with two grooves 116; The shape of each groove 116 is identical, and becomes symmetry with the center line of 108 on ratchet facing to locking component 112; The position that is provided with of groove 116 is the one group of tooth portion 114 and ratchet 108 engagements that must make these groove 116 opposites when ball 118 is exerted pressure on the outer surface of arbitrary groove 116; Ball 118 by spring 120 braking is to be installed in the driving end end 102, is positioned on the vertical plane by locking component 112 and the center line of ratchet 108; By shank 140 being inserted in the cephalic par 102 by the suitable sliding matching mode that pastes, and shank 140 weldering is connected in cephalic par 102, utilization simultaneously is pressed into fit system pad 144 is equipped between shank 140 the inners and the driving shaft 146, driving end end 102 must be fixed on the shank 140; The top surface of pad 144 is concordant with the top surface of shank 140; In one embodiment, the diameter of pad 144 is the equal diameters (as shown in figure 10) with gear body 147; In this embodiment, gear body 147 is to be placed on the pad 144, and pad 144 is to be used as thrust washer, to subtract the friction that helical gear 149 rotates.

It left ratchet 108 outer surface farthest and is provided with a vertical groove 125 when the mid portion groove 116 of locking component 112 became symmetry facing to locking component 112 with the center line of 108 on ratchet; Vertical groove 125 is with so that locking component 112 must be stable at the arbitrary tooth portion 114 ratchet 108 position contacting places that all get along well.

As shown in figure 11, be installed in other assembly on the force-output shaft 106 and comprise that its inner surface 126 must be used as the gasket plate 104, of thrust washer and be situated between and be located at the clasp 128 of 108 on gasket plate 104 and ratchet, and an outer buckle ring 130 that is attached to ratchet 108 outsides; Check spring 132 is to be installed in the outer end of force-output shaft 106 according to traditional approach with ball 134.

Shown in Figure 10,11, the gear body 127 of helical gear 129 is to be embedded in the gasket plate 104; Helical gear 129 and gear body 127 thereof are to be fixed on the interior axial region 131 by the traditional approach such as screw; The diameter of axial region 131 get little to as ¹/ ₄Inch; The diameter of gear body 127 must be for for example about ¹/ ₂Inch; Force-output shaft 106 its positions that are positioned at gear body 127 outsides are to be the square section, have the smaller axial region 135 of section bigger axial region 133 and section; Force-output shaft 106 and axial region 131 the two get one-body molded; The length of side on its each limit of square section must for ¹/ ₂Be equiped with internal buckle ring 128 on the axial region 133 of inch, ratchet 108 and outer buckle ring 130, wherein outer buckle ring 130 is to be embedded in the groove 137 of axial region 133; Each limit length of side of axial region 135 its square sections must be for about ³/ ₈Inch is equiped with check spring 132 and ball 134 on this axial region 135; In alternate embodiment, axial region 133 and 135 must be hexagon or octagon structure.

Other assembly that helps locking component 112 to move comprises clasp 136 and has the driving lever 138 of central lug 141; This central authorities' lug 141 is to engage with the groove 124 of locking component 112, makes driving lever 138 after clockwise direction or counter-clockwise direction are rotated through a limited radian, must make driving lever 138 drive locking components 112 as above-mentioned as move; In one embodiment, helical gear 129 and 149 is to be equipped with 10 straight line helical teeth, and ratchet 108 is equipped with 32 teeth.

Shown in Figure 13 to 15, in the alternate embodiment of T type handle, by make the angle of spending angles with the major part Cheng Rusi 15 of T type handle 150 by an end bending with elongated T type handle 150, and T type handle 150 be installed in make its angle that gets relative drive shaft 152 rotation as 45 degree angles on the driving shaft 152, then lever arm 154 when pulling will with driving shaft 152 parallel (as shown in figure 15).Also can adopt other angle, for example 60 degree to 30 degree or 30 degree to 60 degree are relation, as long as the summation of two angles is 90 degree angles, promptly two angles each other complementary angle get final product.

Shown in the detailed map of Figure 14, T type handle 150 is can be installed in freely rotating on the end of driving shaft 152, and the T type handle pars intermedia 156 that wherein has less width is to be installed in the central longitudinal elongated slot ditch 160 of driving shaft 152 outer ends by spring catch 158; When doing this kind combination, spring catch 158 must run through near the hole 162 on the parallel ends 163 of the groove 160 of driving shaft 152 and run through the hole 164 that is horizontally through T type handle pars intermedia 156; Use that this kind is rotary-type constructs to such an extent that make T type handle avoid operating under the angle of clumsiness, and it is smooth and easy can not undermine the operation of T type handle.

Shown in Figure 13,15, the internal end surface the 166, the 167th of driving shaft groove 160 is tilted to shape at an angle by the center line of horizontal expansion by driving shaft 152 to both sides, wherein center line is to be positioned at one to include on the plane of longitudinal axis of driving shaft 152, and this plane is by the longitudinal axis of spring catch 158; As previously mentioned, the angle of this kind internal end surface 166,167 each limit relative drive shaft 152 axis must be selected, so that its angle with the extension line of lever arm 154 relative T type handle 150 major parts becomes complementary angle mutually; So as shown in figure 15, when T type handle 150 places the position of leaning on mutually with arbitrary internal end surface 166 or 167 of groove 160, lever arm 154 will be parallel with driving shaft 152; Therefore, the major part of T type handle 150 must be hubbed on the spring catch 158, make when handle is positioned at as shown in figure 15 rocking-turn position, T type handle 150 abut on internal end surface 166 or 167 sleekly and make the main axis of T type handle 150 parallel with each internal end surface 166 or 167; Then, lever arm 154 must rotate around driving shaft 152, produces the rocking-turn action of being desired; And must keep the constant speed motion, and need not handle is unloaded from spanner; Use that this kind is rotary-type constructs to such an extent that exempt T type handle and operate under the angle of clumsiness, and it is smooth and easy can not lose the operation of T type handle.This kind embodiment has following advantage:

1. the third mode of operation of box spanner instrument is provided; The handle that need only adjust on the Wrench can come tool using with regard to the third mode of operation.

2. when other two kinds of modes of operation, can not counteract the facts of use.

3. in fact when other mode of operation, can help to use:

(a) ratchet ... it is less to rotate needed space.

(b) T type handle ... physical length is long than T type handle can convenient palm (thumb) be held and is held.

4. for the bolt of excessive length or when under minimum drag, working, this kind structure advantageous particularly.

5. easy to manufacture, with low cost.

Yet above-mentioned explanation only is embodiment of the present utility model, and is non-for limiting embodiment of the present utility model; All personages who is familiar with this skill, it complies with feature category of the present utility model, and other equivalence of having done changes or modifies, and selects or change of shape etc. as size, material, all should be encompassed in following the utility model institute claim.

Claims

1. the configuration box spanner of ratchet that reverses is characterized in that it comprises:

One elongate shaft portion;

One is installed in the driving shaft in this shank in a coaxial fashion;

One is installed in the large helical gear on the end of this driving shaft;

The stop member of being located on this driving shaft surpasses the formed certain angle of this driving shaft normal relatively in order to prevent this crossbar member rotation, this crossbar member at least between the extension line of one end and this bar major part formed angle be complementary angle for this certain angle, therefore, this boom end will be parallel with this driving shaft when this bar member is connected with this stop member, must make this end parallel with this driving shaft when a kind of mode of operation;

One is installed in the force-output shaft of close this large helical gear in this cephalic par, and this force-output shaft is to become vertical direction to extend with this driving shaft;

One is fixed on this force-output shaft with coaxial with it torsion shaft, and this torsion shaft is to stretch out from this force-output shaft;

2. the reverse box spanner of ratchet of configuration as claimed in claim 1, it is characterized in that on this torsion shaft sheathed internal buckle ring between this gasket plate and this ratchet, this internal buckle ring is to be embedded in the groove of offering on this body, and on this torsion shaft, being positioned at this ratchet outside installing outer buckle ring, this outer buckle ring is to be embedded in the groove of offering on this torsion shaft.

3. the reverse box spanner of ratchet of configuration as claimed in claim 2, it is characterized in that: the section of this torsion shaft is a square, and this torsion shaft has the bigger longitudinal part of section, and this longitudinal part is in order to install this ratchet and this internal buckle ring outer buckle ring.

4. the reverse box spanner of ratchet of configuration as claimed in claim 1, it is characterized in that shank is to be installed in this cephalic par and from cephalic par to stretch out, this driving shaft is to be installed in this shank, and has a pad to be installed in the inner position of this shank between this shank and this driving shaft; This helical gear body is to be connected with this pad, the friction when this pad must be used as thrust washer and rotate to reduce this helical gear.

5. the reverse box spanner of ratchet of configuration as claimed in claim 1, it is characterized in that this geared assembly comprises that one is hubbed at the locking component in this cephalic par, this locking component include one be mounted on its upper surface both sides in order to the tooth portion of ratchet engaged, and a groove of being located on its lower surface both sides is used to must engage with ball when this locking component rotates.