CN2071111U

CN2071111U - Easy alternative screwdriver

Info

Publication number: CN2071111U
Application number: CN 89213758
Authority: CN
Inventors: 姜宏溪
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-10
Filing date: 1989-07-10
Publication date: 1991-02-13

Abstract

The utility model relates to an easy alternative screwdriver, comprising a front tube socket, a position regulating wheel, a fluted disc, a rear tube socket, a handle, a screwdriver rod, and the assembly of a plurality of screwdriver heads in different shapes and specifications, wherein, the screwdriver heads are respectively installed in a plurality of straight holes which are circularly arranged in the position regulating wheel; the position regulating wheel is movably clamped by the front and the rear tube sockets; therefore, the position regulating wheel can be regulated and rotated freely. A required screwdriver head which is optionally chosen is placed into a back tube hole corresponding to the straight holes; the screwdriver head is pushed into a front tube hole to be positioned and used. The screwdriver head positioned in the front tube hole can be caused to return to original position with the screwdriver rod to be exchanged with another screwdriver head in a required shape and of required specifications. The position rotation of the position regulating wheel is realized by the operation that the fluted disc is fastened with one side of the position regulating wheel due to the pulling operation of the handle.

Description

Easy alternative screwdriver

The utility model relates to the screwdriver device that is easy to change screwdriver head, this device has by a screwdriver rod body, can advance and retreat in front and back base, positioning wheel and the formed pore of handle, the positioning wheel can be subjected to the plate machine operation on the handle and turn, screwdriver rod can be advanced and retreat in the positioning wheel in push-and-pull, so that the difform screwdriver head of simple and easy replacing, the user is very convenient.

Well-known screwdriver, its capitiform roughly is divided into two kinds of pancake (in-line) and cross, in addition in order to be fit to the rotary manipulation of all size screw, the specification of screwdriver heads varies, the person that causes the general work is for ease of dealing with the rotation of big primary screw, all need the different screwdriver heads of standby several size specifications, so just cause the inconvenience of carrying and collecting, also waste acquisition expenses.

More early stage professional, once designed a kind of screwdriver device to address the above problem at this problem, in its structure handle design is accommodation chamber, screwdriver head for deposit all size, shape, and screwdriver rod is designed to connect the embedding pattern, change various screwdriver head so that look actual needs, yet this kind structure can only solve the economic benefit of changing several screwdriver heads with a screwdriver rod, and ignored the convenience that the operator changes screwdriver head, needed time when such structure also causes waste to change screwdriver head easily.

Therefore, the professional makes the more convenient a kind of screwdriver device (No. the 4572038th, United States Patent (USP)) of designing of replacing screwdriver head for overcoming above-mentioned shortcoming in the recent period, wherein can be arranged with several straight holes by positioning wheel inner annular, screwdriver head for several difformities, specification is ccontaining, the positioning wheel can rotate, need only the post-tensioning screwdriver rod when desire transposing screwdriver head, and make the predetermined straight hole of positioning wheel aim at screwdriver rod, screwdriver head in it is embedded on the screwdriver rod, release just replaceable required screwdriver head, its economic benefit is sure.Yet in fact, this method that makes its straight hole aim at screwdriver rod with hand switching positioning wheel is very difficult, because of artificial carelessness, under inaccurate situation, screwdriver rod is difficult for the straight hole by the positioning wheel, forces to push easily to push away askew positioning wheel and make it loosening even come off to cause and scrap; The arc tongue of screwdriver head is embedded on the screwdriver rod by the side with the rotation of positioning wheel in addition, therefore the annular groove that plugs for screwdriver head must be very accurate, otherwise the interlocking of screwdriver rod and screwdriver head is easily failed, moreover this patent screwdriver head cuts into the arc tongue, screwdriver rod is then cut and is shaped on identical shaped groove, the torsion of retrotorsion screw is excessive to be had brisement and occurs when both rabbet, thereby inventor of the present utility model must overcome and designs the utility model by the actual experiment of this patent being felt deeply above-mentioned defective.

The purpose of this utility model is that the positioning wheel is provided with a fluted disc, can operate the straight hole aligning screwdriver rod that ring is established in the positioning wheel exactly by withholding buckle, the five equilibrium triangular facet is provided with curved flexure strip and can pushes the centre of screwdriver head in straight hole mutually in the positioning wheel, makes the operation of changing screwdriver head more smooth and easy.

Accompanying drawings is as follows:

Fig. 1 is a screwdriver device of the present utility model, the three-dimensional exploded view of its a kind of possibility pattern;

Fig. 2 represents screwdriver device combination dissected figure of the present utility model;

Fig. 3 represents the cut-away view of positioning wheel combination shell fragment of the present utility model and fluted disc;

Fig. 4 represents the front view of positioning wheel combination shell fragment of the present utility model and fluted disc;

Fig. 5 represents that screwdriver rod of the present utility model desires to enter the schematic diagram that the positioning wheel is changed screwdriver head;

Fig. 6 is screwdriver device appearance figure of the present utility model.

Most preferred embodiment of the present utility model as shown in Figure 1, 2, this screwdriver device has behind 2, one on 1, one of the preceding base positioning wheel 3, one handles 4 of base and some members and forms.There is a combination bore 12 at preceding base 1 center, and eccentric part has a pore 11, and these pore 11 1 ends are open-minded, and the other end is the screwdriver head stomidium of reduced bore.In addition, the another side with pore 11 symmetries on this base has a location buttonhole 13, can be added with a spring 132 during screw lock in the hole 13 for a navigation button 131 screw locks in it.There is an axis hole 21 in positioning wheel 2 central authorities, axis hole one end protrudes out a shoulder 211, annular row is shown the hexagon straight hole 22 that several run through both sides in the positioning wheel, in the straight hole 22 the five equilibrium triangular facets be provided with 221, three curved flexure strips 23 of elasticity film trap respectively inlay card be located in the shell fragment groove 221 (as shown in Figure 3).Several ends are hexagonal screwdriver head 24 and insert straight hole 22 respectively and pushed mutually by shell fragment 23 in the five equilibrium triangular facet and be positioned at straight hole 22 central authorities (shown in Figure 4) exactly.The one side of positioning wheel is concordant, and another side is made depression according to the shape of fluted disc 25, so that for fluted disc 25 inlay card settings; Fluted disc 25 is provided with the straight hole 22 corresponding hex holes of equal number and positioning wheel 2, there is a combination bore 251 in its central authorities, combination bore 251 peripheries are distributed with double wedge 252, the number of teeth of double wedge 252 is established three teeth for each hex hole, and the margining tablet 253 of another suitable length convexedly stretches in the position of each hex hole that face at the center; Back base 3 is an one with protecting bow 31, there is an axostylus axostyle 32 in its central authorities, this axostylus axostyle is not equal diameters of three rank, the combination bore 12 of base 1 before first rank are stretched into, second rank are as the axle of positioning wheel 2, the 3rd rank cooperate wheel 2 activity of will transposing to be clamped in first rank before, back base 1, between 3, there is a pore 33 inside of back base 3, pore 33 inner apical margins have the guide groove 331 of a suitable length, buckle 34 is lived in being located at and is protected in the bow 31 and be provided with a returning spring 341, buckle 34 other end loose joints have an arc tooth plate 342, and this tooth plate 342 has five teeth, and three teeth are engaged in three double wedges 252 of each hex hole side on the fluted disc 25 in the middle of it; A reed 343 is fixed on and protects on the bow 31, be positioned at the back side of arc tooth plate 342, but contact tooth plate 342 is engaged in the double wedge 252 on the fluted disc 25, makes the fluted disc rotation; Handle 4 is hollow, and be provided with a lid, can lay in the standby replacement of screwdriver head beyond in-line or the cross screwdriver head (the sleeve driver head of using as hexagonal (hexagon)nut) in the handle, handle 4 tops are provided with a ratchet structure 41, one pore 411 is arranged in it, handle 4 front ends are provided with one in conjunction with film trap 42, be provided with a C shape annular groove 421 in the groove, base 3 combines with a bonding pad 43 spirals when inserting in conjunction with film trap 42 again when the back, can engage with handle 4 by C shape annular groove 421 inlay cards, power when offering handle 4 rotations ends in this, and unlikely back base 3 interlocks that make rotate.Handle 4 rear ends then form a cap seat 44, and have a pair of guiding breach 441 of symmetry; Screwdriver rod is a hexagon for 45 1 sections, and one section is circular, and the front end of circle segments has a hexagonal slotted eye 451, and the outer rim of circle segments has an annular groove 452, can be provided with for C shape flexure strip 453, is provided with a steel ball hole 4521 in the annular groove 452.

Another guiding breach 454 traverses the bottom of whole circle segments, and the top of hexagon section is provided with a guide post 46, and its end then forms and is added with a reed 481 and one when 47, one combination tubes of a coupled column, 48 spirals lock in coupled column 47 earlier and impacts 482.Impact 482 and protrude an outer rim of passing combination tube 48, so structure then can provide screwdriver rod to bear to knock.There is the pole cap 49 of a combination tube slotted eye 491 in central authorities, connection by C shape snap ring 492 makes pole cap 49 and 48 combinations of combination tube, and can make the power of pole cap 49 rotations end in this, the unlikely combination tube 48 that makes connects rotation, the peristoma of pole cap 49, internal diameter etc. are greater than footpath outside the cap seat 44 of handle 4, the peristoma place is provided with the leading of guiding breach 441 of cap seat 44 and buckles 493, when leading the guiding breach 441 of button 493 corresponding cap seats 44, pole cap 49 just can related screwdriver rod 45 from front and back base 1,3, withdraw from positioning wheel 2 and the handle 4 formed straight line pores (as shown in Figure 5); Otherwise when screwdriver rod pushes the straight line pore of above-mentioned member formation, the leading of pole cap 49 buckled 493 441 of guiding breach aiming at cap seats 44 can make pole cap 49 be sleeved on cap seat 44 places, buckle 493 and stagger guiding during breach 441 when pole cap 49 turns make to lead, then can make screwdriver rod 45 keep location (as shown in Figure 2).

Illustrated in fig. 5 is the schematic diagram of changing screwdriver head, action as described above, after just can making screwdriver rod 45, move pole cap 49 disengaging cap seats 44, and the guiding breach 454 of screwdriver rod 45 circle segments bottom and the margining tablet 253 mutual inlay cards of fluted disc 25, the guide post 46 at while hexagon section top and the guide groove 331 mutual inlay cards of pore 33 apical margins of back base 3, screwdriver rod 45 is neither rotated, do not advance and retreat again with rocking; 451 weeks of front end hexagon slotted eye of screwdriver rod 45 are provided with steel ball 4522, and this steel ball 4522 is subjected to the pressure of pulling of C type shell fragment 453 can force hexagon screwdriver head 24 to be in the front end of screwdriver rod 45, when screwdriver rod 45 retreats to fluted disc 25, margining tablet 253 on the fluted disc 25 can block screwdriver head 24 and be located at positioning wheel 2, when changing another screwdriver head 24 as if plan in addition, then add and pull 34 by pressurization, because of the arc tooth plate on the buckle 34 342 has five teeth, wherein three teeth are engaged in the double wedge 252 of fluted disc 25, therefore withhold 34 of a buckle and make positioning wheel transposition one lattice, each withholds buckle then can make positioning wheel circulation rotation.In addition, navigation button 131 can be assisted the error between tooth plate 342 and double wedge, make its straight hole 22 aim at the pore 11,13 of front and back base 1,3, because screwdriver head 24 can be pushed mutually to central (see figure 4) by the curved shell fragment 23 of five equilibrium triangle in the straight hole 22, like this, when screwdriver rod 45 advanced the straight hole 22 of positioning wheel 2, inlay card screwdriver head 24 was forward to pore 11 places of preceding base 1 exactly.

By the above as can be known this utility model consider that not only screwdriver head is recessed accurately or screwdriver rod inlay card combination exactly on the positioning wheel in the straight hole of positioning wheel, even also consider the convenience of changing screwdriver head and the structure that can knock and the handle design that makes things convenient for the anglec of rotation, these have all shown the utility model obvious improvement and practicality.

Claims

A kind of screwdriver device of replaceable screwdriver head, especially refer to a kind of by withholding buckle operation positioning position of wheel and push-and-pull screwdriver rod advance and retreat, so that the screwdriver head of simple and easy replacing difformity, specification is characterized in that: combine by preceding base, positioning wheel, fluted disc, back base, handle and screwdriver rod; Before the pore of base, an end is open-minded, the other end is the screwdriver head hole of reduced bore, is provided with a location buttonhole with the another side of described pore symmetry, is added with the navigation button with a spring in it; The positioning wheel is equipped with several hexagon straight holes, each straight hole is equipped with an end and is hexagonal screwdriver head, three curved reeds place on the interior five equilibrium triangular facet of straight hole and push mutually and make screwdriver head be positioned at straight hole central authorities, depression is made according to the shape of fluted disc in a side of positioning wheel, is provided with for the fluted disc inlay card; Fluted disc is provided with equal number and takes turns the corresponding hexagon ring of hexagon straight hole with positioning, and its combination bore periphery ring is provided with double wedge, and the number of teeth of double wedge is established three teeth for each hex hole, and a margining tablet protrudes the median plane central authorities that are located at each hexagon ring; Back base with protect the bow be integral, its central authorities have protruded out the three-stage shape central siphon, take turns the combination bore that is anchored on preceding base then with screw so as to interting to transpose, make the positioning wheel between the base of front and back, be rotatable state, above-mentioned pore inwall apical margin is provided with a guide groove, and protecting lives in the bow is provided with a buckle, and is provided with a returning spring, an arc tooth plate that five teeth are arranged in the loose joint of the buckle other end, and reed is located at the arc tooth plate back side and is compressed the double wedge engagement that arc tooth plate makes itself and fluted disc; Be provided with a ratchet structure in the pore of above-mentioned handle, an end of pore is provided with a bonding pad chamber, a bonding pad by C type snap ring work be located at the bonding pad chamber, the pore other end has a cap seat, the cap seat have the symmetry two the guiding breach; The screwdriver rod front end is circular, the rear end is a hexagon, the leading edge of circular portion has a hexagon slotted eye, slotted eye sidewall outer rim has an annular groove, be provided with a steel ball hole in the annular groove, one steel ball is arranged in this hole, C shape flexure strip is located at and can be pushed steel ball in the annular groove and inwardly press and form a screwdriver head inlay card structure, a guiding breach has been traversed in screwdriver head circle segments bottom surface, hexagon section end face has a guide post, and its end has a coupled column, and a combination tube revolves with screw thread and locks in coupled column, combination tube is added with a reed and earlier in it during with the coupled column combination and impacts head, impacts head and convexedly stretches in that the combination tube is outer to be constituted one and knock buffer structure; There is a combination tube slotted eye in pole cap central authorities.Closed by a C shape snap ring and combination socket joint, the pole cap inwall is provided with the leading of guiding breach that is symmetrical in back pipe cap seat of equal number and buckles.