Sleeve extension rod
Technical field
The utility model relates to field of tool, relates in particular to a kind of sleeve extension rod.
Background technology
The instrument of extension bolt and nut has fork spanner and monkey wrench, in China Patent No. is ZL99244290.7, name is called in the patent documentation of " a kind of monkey wrench " and discloses a kind of bolt, the mobilizable monkey wrench of nut (hereinafter to be referred as screw) clamping mouth, though the big I of sort of activity spanner clamping mouth is regulated according to the nominal diameter of screw, versatility is good, but also just because of the clamping mouth is movable, when causing in narrow space operation, the clamping mouth can not tighten is fully twisted the screw connect, causes skidding and screw is made a mess of.And the clamping mouth of fork spanner (has " U " shape opening, openings such as plum blossom opening) corresponding one by one with the screw model, be fixedly connected on the handle, the opening that handle is provided with two models i.e. opening of an end, also there is handle to be connected with four openings, as being ZL200520019832.4 in China Patent No., name is called the fork spanner that discloses four clamping mouths of an a kind of handle band in the patent documentation of " double-deck plum blossom fork spanner ", though a handle band four clamping mouths, but corresponding numerous screw specification, need much spanner, a spanner just has a handle, the versatility that is to say handle is poor, the someone has designed the spanner that the clamping mouth is separated with handle again, make the clamping head of different model can a shared handle, the promptly normal box spanner of saying, the clamping mouth is referred to as sleeve in box spanner, make that the versatility of spanner is good, and do not return to produce and skid between clamping mouth and the screw and make a mess of the problem of screw, but with upper ejector lever all is manual, require great effort during use, inefficiency, after design again by electronic, the pneumatic spanner that waits automated tool to drive sleeve, in China Patent No. is ZL94218831.4, name is called and discloses a kind of spanner by the driven by motor sleeve in the patent documentation of " electric wrench ", but its motor output shaft and sleeve are same axial, if it is limited along the axis direction space to be twisted the screw that connects, then can't use, still can only tighten with manual wrench.
Summary of the invention
It is a kind of when bolt, nut use in the space limited along bolt, nut axis director space that the utility model provides, can use automated tools such as pneumatic impact spanner, electric wrench bolt, nut etc. to be twisted the sleeve extension rod that connects, solved when bolt, nut use in the space limited along bolt, nut axis director space, can't use that the rifle formula is pneumatic, electric wrench is tightened, can only use manual wrench, the efficiency of assembling that is caused is beneath, assembling is difficult, the problem of effort.
Above technical problem solves by following technical proposal: a kind of sleeve extension rod, comprise connecting portion, the handle body, described connecting portion axially is provided with sleeve connector, connecting portion gear, handle body connecting portion successively, described handle body comprises dwang, be enclosed within the bar cover on the dwang, described dwang one end is provided with the handle body gear that is complementary with the connecting portion gear, the other end of described dwang is provided with the instrument connector, described bar cover connects described handle body connecting portion, angle ﹥ 0 degree of the axis of described connecting portion gear and described handle body Gear axis.During use the sleeve connector is connected on the sleeve, handle body connecting portion is connected bar and puts, the instrument connector of dwang is connected pneumatic impact spanner, on the automated tools such as electric wrench, driving dwang when turning tool rotates rotates, effect by connecting portion gear and handle body gear, the rotation of dwang is changed into along bolt, the rotation of nut axis, thereby drive sleeve by the sleeve connector, sleeve is with the bolt that is attached thereto, nut screwing clamping or unscrew, can be optionally, by changing angle, with the axis and the bolt of dwang with connecting portion Gear axis and handle body Gear axis, the axis designs of nut is corresponding angle.
As preferably, described handle body connecting portion comprises round shank body connector, the sliding sleeve that is enclosed within the connector outside, fixed cap, described handle body connects first end and is connected on the described connecting portion gear, and the described handle body connector other end is connected on the described fixed cap, and described sliding sleeve connects described bar cover.Sliding sleeve and bar cover play the effect of the tumbler of fixing internal when using, be held in sliding sleeve during use or bar puts, the utility model can stably be connected between automated tools such as pneumatic impact spanner, electric wrench and the sleeve, and fixed cap plays the effect that prevents that kink from throwing off from handle body connector.
As preferably, described sleeve connector, connecting portion gear, handle body connector three are structure as a whole, and described sliding sleeve and described bar cover weld together.Be designed to integrative-structure, so that sleeve connector, connecting portion gear, handle body connector three's center line can better overlap, can not produce eccentric phenomena during rotation, especially the two the journal offset of sleeve connector, connecting portion gear can not be too big, otherwise because the sleeve connector is done eccentric rotation with respect to the connecting portion gear, can produce shearing force to bolt during use, influence the intensity of bolt.
As preferably, described handle body gear and described connecting portion gear all are angular wheel.During as reversing piece, transmission is effective, standard component, and cost of manufacture is low.
As preferably, it is characterized in that the angle of the axis of the axis of described connecting portion gear and described handle body gear is 90 degree.Realize 90 degree commutations, make the axis of dwang become 90 degree angles with the axis of connecting portion, can when bolt, nut use in use when bolt, nut axis director space are more in the narrow space.
As preferably, described handle body gear has only four teeth.Can take out dwang separately when the cross spiral shell and criticize usefulness, make purposes of the present utility model more extensive.
As preferably, be provided with support member between described dwang and the described bar cover.Be difficult for shaking when dwang is rotated in bar cover, can make dwang less with the contact-making surface of bar cover by design supports support dwang simultaneously, the resistance during rotation is also just littler, and feasible rotation is easy and convenient more in addition.
As preferably, described support member is a bearing.Resistance when further reducing to rotate, be difficult for producing wearing and tearing between turning cylinder and the support member when making rotation, be designed to copper bush certainly, or directly be that a back-up block with holes is also passable, when just rotating resistance big, easily grind away, make shorten the service life of handle body.
As preferably, cover part and overcoat part in described sliding sleeve comprises, cover part and described outer race section are provided with the commutation tumbler between dividing in described, and an end of cover part is provided with the sliding sleeve portion gear that is complementary with described connecting portion tooth in described, and described bar cover is connected on the described overcoat part.When rotating dwang without automated tools such as pneumatic impact spanner, electric wrenches, sliding sleeve there is an end of sliding sleeve portion gear towards the connecting portion gear, and after making sliding sleeve portion gear and connecting portion gear mesh together, with fixed cap interior cover part is locked together with the connecting portion gear, by the swing arm cover, the bar cover drives the overcoat part, the overcoat part is controlled the rotation direction of moving interior cover part by the commutation tumbler, interior cover part drives the connecting portion gear, realize the driving to the sleeve connector, speed is also very fast when making manually stubborn connecing.Reversing arrangement is the structure in the existing speeder wrench, promptly when overcoat when direction is rotated, overlap rotation together in overcoat can drive, when overcoat when the another one direction is rotated, interior cover does not rotate, and rotates together as for cover in overcoat can drive when that direction is rotated, and can change as required.
As preferably, described in the end of inwall of cover be taper surface, described sliding sleeve gear is the conical surface gear that is located on the described taper surface, described conical surface gear with described in overlap and be structure as a whole.Rotating effect is good, and sliding sleeve integral body can design lessly.
The utlity model has following advantage, by a pair of gear mechanism, connecting portion gear and handle body gear, with the rotational transform vertically of bolt is rotation with its axes intersect, effectively save along bolt, nut shaft is to assembly space, and can be not enough because of the space, can not use some pneumatic impact spanneres, electric wrench, improved operating efficiency, be provided with the bar cover outward because of dwang simultaneously, making to make extension bar of the present invention can stably connect sleeve and electric tool by holding the bar cover, in preferred version, handle body design of gears of the present utility model is the angular wheel of four teeth, makes dwang can do the cross spiral shell and criticizes use, purposes is more extensive, cover part and overcoat part in sliding sleeve is designed to, and, make the utility model can be used as speeder wrench usefulness again at the sliding sleeve portion gear that interior cover partial design and connecting portion gear are complementary, the choice of occupation mode is big, and versatility is good.
Description of drawings
Fig. 1 is the perspective view of the utility model embodiment one.
Fig. 2 is the schematic diagram after amplification is axially dissectd at the I place of Fig. 1.
Fig. 3 is the connecting portion of the utility model embodiment one perspective view after sliding sleeve and fixed cap are taken off.
Fig. 4 is the perspective view of the dwang of the utility model embodiment one.
Perspective view when Fig. 5 links together for the sliding sleeve of the utility model embodiment two and bar cover.
Fig. 6 is the connecting portion of the utility model embodiment three perspective view after sliding sleeve and fixed cap are taken off.
Fig. 7 is the perspective view of the dwang of the utility model embodiment three.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Embodiment one, referring to Fig. 1, a kind of sleeve extension rod, comprise connecting portion 1 and handle body 2, connecting portion 1 axially is provided with sleeve connector 11 from top to bottom successively, connecting portion gear 5, handle body connecting portion, handle body 2 comprises dwang 3, be enclosed within the bar cover 4 on the dwang 3, bar cover 4 is a round tube, the support member 21(that is provided with fixing dwang 3 in the inside, left end I place of bar cover 4 is referring to Fig. 2), had and made behind the support member 21 dwang 3 steady more in addition during rotation in bar cover 4, handle body connecting portion comprises that handle body connector 61(is referring to Fig. 3), sliding sleeve 62 and fixed cap 63, handle body connector 61 is a cylinder, the lower end of handle body connector 61 is connected the upper end of connecting portion gear 5, sliding sleeve 62 is the annular cover, sliding sleeve 62 is enclosed within the outside of handle body connector 61, for the ease of dismounting, be loose fit between two 61 of sliding sleeve 62 and the handle bodies, wearing and tearing when rotating between sliding sleeve 62 and the handle body connector 61 in order to reduce, can between them, add the axle sleeve that softer material such as copper is made, preferably damage axle sleeve when wearing and tearing like this, bad back only needs to change axle sleeve and gets final product, perhaps between them, load onto the single face bearing, perhaps they being carried out surface treatment strengthens its case hardness, fixed cap 63 is fixed on the upper end of handle body connector 61 by bolt 64, in case sliding sleeve 62 comes off from handle body connector 61 when using, fixed cap 63 is a circular lid, heart position has connecting hole therein, it is to consider for symmetry is attractive in appearance that connecting hole is driveed at the center, be not to be confined to drive in the centre position, certainly fixed cap and handle body connector also can be taked other connected mode, as selling head one of the upper end of handle body connector 61 design, after the pin head is uploaded from the connecting hole of fixed cap 63, slotting latch is fixing on the pin head more also can, a lot of known connected modes can be arranged, do not enumerate one by one at this, the right-hand member of bar cover 4 is welded on the left surface of sliding sleeve 62, overlap 4 welds at sliding sleeve 62 and bar and leave the breach that passes for dwang 3, the beneficial effect of design breach is, can make the solder side between sliding sleeve 62 and the bar cover 4 bigger, make the bonding strength between the two better;
Referring to Fig. 2, support member 21 is for being located at the ball bearing between dwang 3 and the bar cover 4, an internal diameter and dwang diameter directly are set without bearing certainly are complementary, it is also passable that external diameter and bar overlap the ring-type supporting seat of 4 internal diameters couplings, and just rotating effect does not have bearing good;
Referring to Fig. 3, sleeve connector 11 is a square, its inside has a through hole that runs through the left and right sides surface, in through hole, be provided with spring, each withstands on the two ends of spring a steel ball 12 on the two ends of through hole, the diameter of steel ball is bigger than the diameter of through hole end, steel ball 12 can be pressed in the sleeve connector 11, but can not fall down from sleeve connector 11, when like this sleeve connector 11 being connected on the connecting hole of sleeve, steel ball 12 just is stuck in the pit on the sleeve connecting hole, difficult drop-off when sleeve connector 11 and sleeve are linked together, connecting portion gear 5 is a bevel gear, bevel gear is the bevel gear of miter angle, be provided with stand 51 handle body connectors 61 in location in the middle of the connecting portion gear for cylindric, have the screwed hole 65 that connects usefulness for screw 64 in the top, sleeve connector 11, connecting portion gear 5, handle body connector 61 threes are structure as a whole and three's coaxial line, like this when connecting portion gear 5 drives sleeve connector 11 with 61 rotations of body connector, sleeve connector 11 can not made eccentric rotary with body connector 61, when the sleeve that uses if match with the utility model is not connecting hole but connector, sleeve connector 11 is designed to get final product with the structure of connecting hole, as long as mate with the sleeve connecting portion;
Referring to Fig. 4, dwang 3 is cylindrical straight-bar, right-hand member at dwang 3 is provided with handle body gear 31, handle body gear 31 is complementary with connecting portion gear 5, it also is the bevel gear of miter angle, handle body gear 31 has only four teeth, when handle body gear 31 is placed in the bar cover 4, handle body gear 31 can with the connecting portion gear mesh together, after dwang 1 taken out in the bar cover 4, dwang 1 can be criticized usefulness as the cross spiral shell again, the left end of dwang 1 is connected with instrument connector 32, and instrument connector 32 is outside for cylindrical, and inside has the structure of square connecting hole, square connecting hole and dwang 1, handle body gear 31 three's coaxial lines and being structure as a whole produce eccentric rotary when preventing to rotate.
Embodiment two, referring to Fig. 5, be sliding sleeve 62 with the difference of embodiment one, cover part 66 and overcoat part 67 in sliding sleeve 62 comprises, be provided with the commutation tumbler between interior cover part 66 and the overcoat part 67, the commutation tumbler is existing structure and technology on existing speeder wrench and the ratchet spanner, in this no longer repeat specification, the upper end of interior cover part 66 is a bellmouth, on the hole wall of bellmouth, be provided with the sliding sleeve portion gear 68 that is complementary with connecting portion gear 5, bar cover 4 is connected on the overcoat part 67, when with direction change-over switch 69 when right-hand member is pressed, cover part 66 is rotated together in can driving when overcoat part 67 clockwise rotates, when overcoat part 67 rotates counterclockwise, only overcoat part 67 is rotated, interior cover part 66 is rotated not together, when direction change-over switch 69 when left end is pressed, then do well opposite, be that cover part 66 was rotated together in overcoat part 67 can drive when rotating counterclockwise, when overcoat part 67 clockwise rotates, only overcoat part 67 is rotated, and interior cover part 66 is rotated not together, optionally direction change-over switch 69 is placed on the correct position during use.
Embodiment three, with the difference of embodiment one be, referring to Fig. 6, connecting portion gear 5 is the rectangle gear, referring to Fig. 7, handle body gear 31 is the rectangle gear, and handle body gear 31 is not an integrative-structure with dwang 3, but by design axis hole in the middle of handle body gear 31, turning cylinder 3 interts that mode in axis hole connects.
Be example with embodiment two below, the different usings method under the different situations of the present utility model specified:
Using method one when needs cross spiral shell is criticized, is taken out dwang 3 in bar cover 4, dwang 3 can be worked as the cross spiral shell and criticize usefulness;
Using method two, when needs are used automated tool extension bolt or nut, make sliding sleeve 62 not have an end of sliding sleeve portion gear 68 towards the connecting portion gear, sliding sleeve 62 is enclosed within on the handle body connector 61, cover fixed cap 63, and fixed cap 63 is fixed on the handle body connector 61 with bolt 64, make that handle body gear 31 and connecting portion gear 5 are meshing lives, sleeve connector 11 is connected on the sleeve, sleeve is connected to be needed by on bolt of twisting or the nut, the power delivery of automated tool is connected on the instrument connector 32, a hand steered firmly bar cover 4, hand is arrested automated tool and is carried out operation and get final product, because automated tool is not in the axial place operation of bolt or nut, therefore be not subjected to bolt, the restriction of the axial space of nut makes and works as bolt, nut uses along bolt, in the time of in the limited space of nut axis director space, also can use pneumatic impact spanner, automated tools such as electric wrench are to bolt, nuts etc. are twisted and are connect;
Using method three, when not having automated tool or not using automated tool to bolt, when nut carries out operation, make sliding sleeve 62 end of sliding sleeve portion gear 68 be arranged towards the connecting portion gear, sliding sleeve 62 is enclosed within on the handle body connector 61, and make sliding sleeve portion gear 68 and connecting portion gear 5 together meshing, cover fixed cap 63, and fixed cap 63 is fixed on the handle body connector 61 with bolt 64, cover part 66 and 5 lockings of connecting portion gear in making, because the effect of positioning step 51, when making locking, connecting portion gear 5 is just meshing in correct position with sliding sleeve portion gear 68, reversing switch 69 is placed suitable position, it when promptly seeing actual job cover part 66 in driving when wanting overcoat part 67 to rotate toward the clockwise direction or need rotate counterclockwise, and reversing switch is placed the relevant position, dwang 3 never all has no relations from the 4 interior taking-ups of bar cover, as long as make handle body gear 31 be separated from connecting portion gear 5, sleeve connector 11 is connected on the sleeve, sleeve is connected to be needed by on bolt of twisting or the nut, the throw rod cover 4 back and forth, can turn bolt apace, nut, if do not think to turn apace bolt certainly, nut, so according to the connected mode of using method two, rotate dwang 3 by hand and turn bolt, nut also can, but because the number of teeth of the gear ratio connecting portion gear 5 of handle body gear 31 will be lacked, when so dwang 1 rotates a circle, bolt, can not rotate a circle during nut, so can be slower when turning.