EP0644817A1

EP0644817A1 - Grip for tools, especially for screwdrivers.

Info

Publication number: EP0644817A1
Application number: EP93912914A
Authority: EP
Inventors: Klaus Amtenbrink; Robert Hoy; Martin Strauch
Original assignee: Wera Werk Hermann Werner GmbH and Co KG
Current assignee: Wera Werk Hermann Werner GmbH and Co KG
Priority date: 1992-06-12
Filing date: 1993-06-08
Publication date: 1995-03-29
Anticipated expiration: 2013-06-08
Also published as: JPH08501026A; DE59301981D1; DE4219253C2; ES2085161T3; WO1993025354A1; AU4323993A; US5601003A; DE4219253A1; EP0644817B1

Abstract

The invention relates to a plastic injection-moulded grip for tools, especially for screwdrivers, with regions of plastic material of different hardnesses, the harder one of which do not deform under the forces arising during use and the softer one permit slight elastic deformation, and a central hollow (5) for the tail of a tool blade (2). To provide a design which is easy to use and provides the best gripping, the invention proposes that the central hollow is in a core section (6) with a contoured outer surface (11) on which a jacket is injection-moulded. The recesses (8) resulting from the contouring of the outer surface (11) are filled with a softer plastic until a roughly circular cross-sectional shape is obtained.

Description

00001 handle for tools, especially screwdriver

00002 from 00003

00004 The invention relates to an art

00005 injection molded booklet for tools, in particular

00006 screwdriver, with zones different

00007 borrowed hard plastics, the harder of which

00008 in the case of the actuation load

00009 occurring forces is undeformable and

00010 the softer but less elastic

00011 allows deformations and a central

00012 the receiving cavity for the fishing rod or that

00013 fastening-side end of a tool blade. 00014

A booklet of this type is through the DE-PS

00016 35 25 163 known. Such material composition

00017 NEN bring even distribution

00018 lung increased grip of the booklet. at

00019 stable base body is a pressure

00020 position-preventing hold in the operating hand

00021 reached. 00022

00023 For booklets with zones of different hardness

00024 plastics also faces the problem

00025 the angel of the to be inserted into the booklet

00026 tool with the necessary stability

00027 like. For example with a screwdriver

00028 booklet the fishing rod must not turn in the booklet.

In known screwdrivers is therefore the

00030 the zone of the handle surrounding the hinge from a

00031 made of harder plastic. The

00032 elasticity of this hard material allowed

00033, however, only to a limited extent afterwards

00034 inserting screwdriver blades into

00035 the magazine. Usually, such 00036 borrowed 00037 screwdriver blades inserted into the finished booklet can be easily pulled out again 00038. The hard material is generally not suitable for 00039 to exert a necessary 00040 holding force on, for example, the features arranged on the hinge 00041 for torque transmission. If, on the other hand, you would insert a 00043 screwdriver blade into a booklet, 00044 in which the receiving cavity is surrounded by elastic, 00045, therefore softer, plastic material, 00046 this could result in better anchoring 00047 against pulling out the blade 00048, but would result in 00049 deformations due to actuation may lead to a loosening of the connection Angel50. Knowing this specification, the present invention has set itself the task of designing a 00054 generic booklet in a structurally advantageous 00055 configuration such that the elasticity of the 00057 booklet is increased, in particular a high one, with optimal cohesion of the zones 00058 depth of compensation of the actuation-related 00059 deformations is reached. This problem is solved by the invention specified in claim 00062 1. 00063 00064 The subclaims are advantageous developments of the qattυnqs compliant booklet - 00066 00067 As a result of such an embodiment, a generic booklet 00068 according to increased use stability 00069 is achieved: For example, the core part is formed with 00070 a profiled lateral surface 00071 and made of a harder material, so 00072 this core part can take up the tang of a tool, for example a screwdriver clinch 00074 ge. Wings or the like arranged on the screwdriver blade 00075, by means of which 00076 which torque is to be transmitted to the tool, are no longer in the 00078 soft plastic material, but in the 00079 hard plastic material. By means of the cross-sectional profiling of the core part, which is 00081 in particular gear-shaped or star-shaped, 00082, 00084 torque can be transferred from a soft material surrounding the hard core part to the blade without 00085 loosening in connection with the hinge / handle 00086. In this configuration, 00087 the elastic holding forces which secure the hinge 00088 against being pulled out of the core part need not be applied by the hard plastic material 00090, but can be applied by the softer 00092 material surrounding the 00091 hard plastic material. The effect of the 00093 elasticity of the softer area can be transferred to the 00096 hinge 00094 via an essentially inelastic displacement of areas of the core part. In production engineering terms, it is advisable to manufacture the core part with nominal 00099 break points running parallel to the axis of the cavity, which break when the 00100 catch is driven in. This then creates 00101 partitions made of hard material which are separated by a gap or the like, 00102, which run parallel to the axis of the hinge, and which clamp the hinge area 00105 inserted into the 00104 booklet between them. The force between the through 00106 the slot or the like separate core

00107 will reach through that surrounding the core

00108 elastic plastic material exercised. It is

00109 provided that the hard core part a

00110 end of the cavity overlapping dome

00111 trains, this is also an axial

00112 Shifting of the fishing rod prevented when-

00113 for example the booklet in connection with a

00114 screwdriver is used, and the same as

00115 punch or the like with a hammer

00116 is applied. The core part has

00117 moves several, especially two or four in

00118 arranged even distribution of circumference,

00119 radial predetermined breaking points. This predetermined breaking point

00120 len are formed in that between

00121 arranged outer surface and inner cavity surface

00122 te webs are injected, which then at

00123 Break in the fishing rod. In doing so,

00124 can be seen that provided on the fishing wing

00125, which are radial from the preferably rectangular

00126 step out or round fishing body and

00127 in the broken breaking point

00128 dip formed and so between

00129 two parts of the core part come to rest.

00130 Because of the elastic loading of the

00131 when driving in the fishing parts of the

00132 hook core zone presses the gap after 00133 passing through the wing together again, so that

00134 the hinge only by means of a high tractive force

00135 the magazine can be pulled out again. The

00136 the hard core part surrounding jacket is made

00137 preferably made of polyethylene or polypropylene

00138 and does not need, but can from a case

00139 molded from preferably harder material

00140. Will that be the cross-sectional profiled 00141 sheath surrounding core part of no further

00142 molded plastic, so is the outer contour

00143 of the jacket preferably round in cross section

00144 manufactured and forms with its surface

00145 attack surface for the hand of the user.

00146 Especially when this elastic jacket

00147 is still encapsulated with a shell, which is made of

00148 is made of a harder plastic material,

00149 can this coat from a plastic foam

00150 exist. It is preferably thought of as

00151 plastic foam a light material too

Use 00152 so that the screwdriver sw

00153 men can. Another training course for inventors

00154 fertilizer provides that the core part from one

00155 is made of soft material and of one

00156 is molded around the harder jacket area. For this

00157 has proceeded so that the central cavity

00158 in a core part with profiled jacket

00159 surface, which is from a coat

00160 constant wall thickness from harder

00161 plastic is overmolded, the from the

00162 profiling of the lateral surface resulting

00163 deepening to achieve approximately

00164 circular cross-sectional shape with a white

00165 cheren plastic are filled. The corresponding

00166 appropriate profiling brings an intimate,

00167 slip-free composite of different

00168 hard plastics. In an alternation of valley

00169 and Berg in the circumferential direction is now that

00170 core part -τ ~ <n of the layer of harder materia L

00171 overlaid. The fissures are then filled. This is how the profile fits into the pro

00173 fil. The corresponding waveform also leaves

00174 a larger contact area between the in

00175 composite standing plastics arise. There 00176 the core part of a relatively harder art '

00177 material is enclosed, the core part

00178, on the other hand, is significantly less hard

00179, which also opens up the advantage that

00180 the elasticity or flexibility of the

00181 booklet into the inside of it

00182 continues, i.e. violent deformations

Find 00183 large compensation mass. The coat

00184 wall acts like an elastic or in

00185 Limits of flexible hoarfrost. It all leads to

00186 an even more likeable figure, especially

00187 in an advantageous use of the

00188 permanent wall thickness present

00189 for filling the softer plastic

00190 fes the related usage habits

00191 remain intact, only that the evenly

00192 distributed soft spots now manufacturing

00193 can be realized cheaper. The magazine

00194 is comfortable to hold. A balanced,

00195 more evenly distributed and therefore more optimal

00196 mechanical bond with regard to the

00197 or forces occurring in the booklet will be included

00198 simple means achieved when the cross

00199 cut the core part approximately gear-shaped

00200 is profiled. To this extent arise in longitudinal

00201 direction of the booklet oriented grooves in

00202 uniform arrangement and exactly angularly

00203 shares. On the one hand for technical reasons

00204 (one gating point on each joint is sufficient

00205 page) and on the other hand to achieve a

00206 cross-deepening network of training

00207 fillings is further proposed that the

00208 individual, one behind the other in the U direction

00209 lying fields of the filled wells

00210 by a circumferential, 00211 a groove of the shell filling rib soft

00212 ren plastic material are connected. The

00213 fillings "hold by the hand". Except-

00214 the grooves act as distribution channels

00215 molding compound. Another advantage is that the

00216 groove in depth to or on the core part

00217 is enough. This allows even

00218 gripped the relatively harder jacket radially

00219 directed anchoring of the fillings

00220 or generate in the core part. In addition to one

00221 networking to the coat provides this

00222 overall high mechanical loads

00223 represents a very stable connection. Finally

00224 it is still of independent importance

00225 tion that the core part made of porous injection

00226 recycling material exists. Is thought in here

00227 primarily also on plastic, see above

00228 that in this way an environmentally conscious measure

00229 me takes action, namely to use "old material".

00230 The mass forming the core part has the

00231 far larger proportion of material, which core part

00232 of the hard new plastic mass in the manner of a

00233 lamination layer significantly lower material

00234 al portion is stabilizing. The

00235 core part is in a pocket. The porosity

00236 can up to the floatability of the booklet (plus

00237 blade). The central cave

00238 is generally molded around the hinge

00239 or the rod is in such a cavity

00240 can be inserted. In the latter case

00241 cut their means of securing against rotation

00242 designed like this (cutting rod). It is

00243 further provided that in a booklet, such as

00244 it was last described, which is there as a

00245 ches core area described, which 0024-ϊ preferably made from a recycled material

00247 stands, again a hard inner core part

00248, which then has the aforementioned 00249 good torque transmission properties

00250 and is particularly suitable for

00251 the booklet later with tools (blades)

00252 to equip. 00253

00254 The object of the invention is as follows

00255 with reference to a drawing

00256 embodiment explained in more detail. It

00257 shows: 00258

00259 Fig. 1 has a booklet according to the invention

00260 transmitter screwdriver in side

00261 sees 00262

00263 Fig. 2 is a bottom view of the booklet, and

00264 against the blade away

00265 seen end of screwdriver, 00266

00267 Fig. 3 the core part of the screwdriver in

00268 side view, 00269

00270 Fig. 4 shows the section along line IV-IV in

00271 Figure 3, 00272

00273 Fig. 5 introduced into an injection mold

00274 core part with molded jacket

00275 harder plastic, 00276

00277 FIG. 6 shows a cross-section for this, following 00270 along the line VI-VI in FIG. 5,

00279 00280 Fig. 7 the section along line VII-VII in

00281 Figure 5, enlarged, the groove-forming

00282 illustrating the filler, 00283

00284 Fig. 8 taken from the injection mold

00285 intermediate product of screwdriver

00286 hers, i.e. before filling the recess

00287 exercises with a softer synthetic

00288 fabric, clarifying the grooves, 00289

00290 Fig. 9 the section along line IX-IX in

00291 Figure 8, enlarged, 00292

00293 FIG. 10 corresponds to FIG. 9

00294 enlarged cross-section after filling

00295 len of the wells, (here only as

00296 half section reproduced), 00297

11 shows a section according to FIG. 7

00299 similar representation of a variant

00300 te when overmoulding the jacket and 00301

00302 Fig. 12 this variant in representation as

00303 Figure 10, 00304

00305 Fig. 13 a booklet of a screwdriver

00306 of a further embodiment, 00307

14 shows the booklet according to FIG.

00310

00311 Fig. 15 is an illustration of a booklet according to

00312 Figure 13 in cross section according to the

00313 line XV-XV and 00314 00315 Fig. 16 shows a cross section through another

00316 embodiment of the invention. 00317

00318 The screwdriver shown in Figure 1

A booklet H is assigned to 00319. 00320

00321 The booklet H sits on which a cutting edge 1

00322 opposite end of the screwdriver blade 2

00323 turned end 3. The end 3 has anti-rotation

00324 cutting or wing 4 on. 00325

00326 For other tools, for example one

00327 file, the end 3 would be the hinge. 00328

00329 Said end 3 extends more or less

00330 long in a central, longitudinal direction

00331 Cavity 5 of the booklet H. 00332

00333 The screwdriver blade 2 is made of steel. 00334

00335 The booklet H is made of plastic, divided

00336 or divided into zones of different

00337 hardness. 00338

00339 A first zone is formed by a core

00340 part 6. The latter brings the largest proportion

00341 material accumulation and is tough-plastic. 00342

00343 A second zone forms the core part 6

00344 enveloping ° r jacket 7. The latter consists of

00345 hard plastic. 0034 '

00347 Another and therefore third or last zone

00348 results from in recesses 8 of the jacket

00349 7 completed fillings 9. In this regard 00350 is when actuation occurs

00351 deformable plastic,

00352 classified in the category soft-elastic. 00353

00354 The three components mentioned lead to one

00355 sympathetic booklet H, about which a

00356 high torque can be applied without

00357 that painful on the operating hand

00358 result in pressure points. 00359

00360 On the other hand, there is also cohesion

00361 of the zones secured, and not alone

00362 due to the networking of the individual art

00363 fabric zones to each other, but also essential

00364 influenced by a special kind of

00365 profiling. This arises in detail

00366 from the sectional representations listed above

00367 gen. So there is the core part 6, in cross section

00368 seen from a gear-shaped profile.

00369 whose tooth-like projections 10 are trapezoidal

00370 miger shape and leave between themselves, in

00371 cross section seen as a V-shaped notch valleys

00372 the mentioned depressions 8. projections 10

00373 and wells 8 are even

00374 angular distribution and create a fairly flat

00375 cheng large circumferential surface 11. There are

00376 a total of six projections 10 realized with

00377 the corresponding number of wells 8,

00378 which are interrupted in the longitudinal direction

00379 (verql. Fiuur 8. - The cross-sectional proportions of

00380 projection 10 and depression 8 are approximately

00381 equal. The length of the flank of the trapezoidal

00382 gene projections 10 correspond to the head

00383 flattening of the protrusions; their head width

00384 goes about twice in the base of the trapeze. 00385 The one that crosslinks with the lateral surface 11

00386 jacket 7 follows the mountain / valley circumferential corrugation.

00387 The jacket 7 applied by extrusion coating

00388 harder plastic keeps its wall thickness

00389 ke about constant. This is included

00390 approx. 2 mm. The depressions 8 stand out

00391 through and are also on the coated product

00392 declared with 8. 00393

00394 The lateral surface 11 goes into one end

00395 slightly domed 12 over. The latter forms

00396 the end of the core facing away from the cutting edge 1

00397 partly 6 and is also mentioned by the

00398 coat 7 made of harder plastic and

00399 consequently bears the reference number 7. 00400

00401 At the end opposite the tip 12

00402 which is the entrance to cave 5

00403 det, is that made of harder plastic

00404 coat with creation of a collar 12

00405 drawn. The collar 12 clearly supports

00406 over a ring groove 14 of the

00407 Book H. Said groove 14 extends

00408 is well over a third of the length of the booklet

00409 H and closes after a

00410 tion 15 to a second ring groove 16 approximately

00411 rather axial length like 14. The latter (16)

00412 rises into a gripping zone 17 of the

00413 largest diameter of the booklet H to

00414 then descending in the same way

00415 to pass a third fillet 18, which

00416 enters the crest 12 mentioned above via a convexly rounded end zone.

00418 00419 The ring throats 14, 16 and 18 are in their

00420 arching reproduced somewhat exaggerated.

00421 is based on the ergonomically mature

00422 booklet form, as in DE-PS 12 98 060

00423 applicant emerges and fully included here

00424 will. 00425

00426 The collar 13 approximately reaches the diameter

00427 the bundle extension 15 and is on

00428 of its periphery out of round, especially hexagonal

00429 designed so that the tool does not

00430 rolls. The flats are designated 19

00431 and result from FIG. 1. 00432

00433 Both in the cross-sectional area of the bundle-shaped

00434 extension 15 and that of the gripping zone 17 00435 maximum diameter and the tip 12

00436 the profile in favor of an undisturbed

00437 continuous, circular cross-section with

00438 broehen. Gripping zone 17 and collar-shaped extension 00439 are also in the longitudinal direction of the booklet

00440 convex. So here is a rotational

00441 symmetrical portion of harder

00442 gripping zone "to day". Around the circular cross-section 00443 also with regard to the rich professional

00444 zones to realize and moreover

00445 to increase the grip of the booklet H are

00446 the wells 8 to achieve one

00447 approximately circular cross-sectional shape with the

00448 another plastic filled. It? will on the

00449 sectional views referenced. Of course

00450 does not need to be an exactly 00451 circular cross-sectional shape. It

00452 could already be one in the circumferential direction

00453 subsequent polygonal surface sequence available 00454 gen, so that the wells 8th

00455 Form so-called single fillets into which the fabric

00456 be the operating hand yielding to the

00457 fill 9 slightly molded. 00458

00459 As can be seen in FIG. 3 as an intermediate product,

00460 leads to the axial length of the second and

00461 third ring throat 16,18 limited training

00462 from wells 8 to an approximately oval outline

00463 having circumferentially distributed fields

00464 dern F. The delimitation of the fields F is

00465 det by a peripheral edge 20 on the wall side

00466 of the wells 8. The reason 21 is the

00467 knife-like gutter of the V-valleys and ends in

00468 a radius distance in front of the rounded ends

00469 of the elongated fields F. Both ends together

00470 would be pushed towards the inside of the

00471 Form core part 6 tapering hollow cone. 00472

00473 To one that goes beyond networking

00474 connection stop between jacket 7 and core part 00475 6, the edge 20 could also undercut

00476. That is at the rounded ends of the

00477 fields F realized and shown in FIG.

00478, see reference number 20 '. 00479

00480 Seen in the circumferential direction, the fields

00481 F a width that corresponds to the two to three

00482 chen, each leaving a web 22 corresponds to 0048. dimension between the longitudinally oriented 00484 fields F (on the surface). 00485

00486 As can be seen in FIG. 1, the individual are

00487 fields F beyond the webs 22 of fields F.

00488 in material connection. This has been achieved 00489 by that the individual, in the circumferential direction

00490 next to each other and one behind the other in the longitudinal direction

00491 of the lying fields F of the filled-in recess

00492 exercises 8 by one in the circumferential direction

00493 extending groove 23 are connected. hereby

00494 creates a circumferential spray composite for the

00495 fillings 9. The penetrating the groove 23

00496 plastic material is there as filling

00497 Rib 24 declared. 00498

00499 The ribs 24 are halfway through the

00500 fields F, all around in a common

00501 men level. 00502

00503 The ribs 24 are kept free

00504 groove 23 by spraying on the jacket 7 through

00505 on an injection mold Sp into which

00506 Form nest N facing filler pieces 25. The latter

00507 can end in the cross section of the jacket 7, such as

00508 this results from FIG. 12, or else

Pass through to the lateral surface 11 of the

00510 the core of the booklet H-forming core part

00511 6. This way, the softer one would have the

00512 fillings 9 and ribs 24 visual arts

00513 anchoring directly to the two

00514 other zones, namely on the jacket 7 and on the core

00515 part 6. 00516

00517 The radially inward except for the

00518 heads of the trapezoidal cross-section

00519 jumps in sweeping version of the fill

00520 ke 25 results, for example, from FIG. 7.

00521 The filler pieces 25 can be seen there

00522 into the filling space 26 forming the jacket 7 00523 of the injection mold Sp, except for the 00524 base of the filling space. 00525 00526 In the division joint 27 of both mold halves of the 00527 injection mold Sp, the corresponding filler 00528 25 is of course partially formed there by the mold halves 00529. 00530 00531 The core part 6 consists of porous injection molded 00532 recycling material. This has a special 00533 advantage insofar as the quality of the old material corresponding to 00534 is not a priority 00535. It must be sprayable and may have a mixed structure 00536 even medium hardness 00537. The structure 00538, however achieved, is stabilized by the jacket 7, which surrounds the core 00539 part 6 on all sides and is made of plastic 00540 of a harder type. On the other hand, a 00541 relatively soft filling of the pocket enclosed by 00542 jacket 7 can also advantageously be used for 00543 Plug-in assignment of screwdriver 00544 blades 2 with self-tapping wings 4 00545. 00546 00547 Another advantage of such a porous 00548 structure is a higher load 00549 even elastically absorbing scaffold structure, 00550 so that extreme deformations of the booklet H does not 00551 lead to a detachment of the interconnected 00552 plastic layers. In addition, the 00553 additional component is the depth intervention of the 00555 layers, which changes in the circumferential direction. Rotating loads effective on booklet 00556 always act against locking 00557 de flanks due to the mentioned transverse 00558 cut gear-shaped profiling of the core

00559 part 6 and the jacket 7. The fillings 9

00560 are in the direction of the day

00561 see compressed. 00562

00563 A last advantage arises from the porous

00564 sen, structure containing gas inclusions for

00565 a usable buoyancy of the booklet H,

00566 so that the screwdriver etc. in such

00567 not lost work situations

00568 goes. It can be an open pore

00569 or closed-pore framework structure

00570 dein, being in the case of the open-pore structure

00571 with a corresponding coating

00572 the cutting edge 1 facing end of the core

00573 partly 6 no water or the like there

00574 can penetrate. This the entrance to the cave

00575 5 except for the outer surface of the screwdriver

00576 blade carries 2 final jacket wall zone

00577 the reference numeral 28. 00578

00579 The profiling makes the throat-related

00580 corrugation of the booklet essentially with. 00581

00582 A further embodiment is shown in FIG.

00583 game of the invention shown. There points

00584 the booklet 100 has a hard core part 102,

00585 which has a central cavity that is

00586 aligned with a central cavity 107

00587 closes, the core part 102 has a dome

00588 108 into which the cavity 104 adjoining the cavity 107 ends. The core

00590 rich 102 of this booklet is from a hard

00591 plastic material, in particular polycarbonate

00592 manufactured. This hard plastic area is 00593 with a star-shaped profile (Figure 15).

00594 The stars 103 protrude radially into an area

00595 101 made of a softer, elastic synthetic

00596 material into it. The outer contour of the

00597 Issue 100 becomes softer from zone 101

00598 plastic formed. This zone forms the

00599 surface 106 of the booklet. In the execution

00600 for example, the magazine has a cylindrical one

00601 external cross section. The star-shaped coat cross

00602 cut of the inner core part forms predetermined breaking

00603 exhibit 110. These breaking points will be

00604 formed by essentially two

00605 mirror-symmetrically designed half

00606 ten connected via material webs 110

00607 den are. By connecting the two

00608 halves are formed by means of material webs 110

00609 slots 105 made with softer material

00610 are filled. In the embodiment, the

00611 cavity 104 a rectangular cross section. 00612

00613 is now in this embodiment in the

00614 cavity 107 with a blade 108, for example

00615 screwdriver head inserted, so should

00616 the wings 109 of the blade 108 so oriented

00617 that they with the predetermined breaking points 110th

00618 aligned. When inserting, which is

00619 loading in the axial direction on the

00620 blade is made, then split the wings 109

00621 the blade 108 the webs 110 of the predetermined breaking point

00622 le- The two qeqenlying parts of the core part 102 which thereby arise are 00623

00624 thereby pressed apart against the elastic

00625 see restoring forces of zone 101 from elastic

00626 chemical material. As soon as the wing area one

00627 area of the cavity has closed 00628 due to the elastic contact pressure

00629 on the two divided hard core parts

00630 presses the slot so that the blade is against

00631 pulling out is secured. Blade 108

00632 is driven into cavity 104 as far as

00633 until it faces the rear with its end face

00634 end face 104 "of the cavity 104

00635 face of the blade is thus in the copper

00636 pel 108 and can be subjected to axial forces

00637 be struck. • 00638

00639 the cross-sectional area of height 104 which

00640 as shown in particular in Figure 16, too

00641 can have a round cross-section is

00642 moves less than the cross-sectional area of the

00643 blade to be inserted into the cavity 104.

00644 This ensures that after breakage

00645 of the predetermined breaking points, when pushing through

00646 the wing 109 happens, always a radial 00647 load on the blade is guaranteed. 00648

00649 In the embodiment shown in FIG.

00650 example is the jacket 101 with a shell

00651 110 overmolded from hard material. This

00652 essentially corresponds to the

00653 Figure 9, which is why here to the description

00654 referred to this embodiment (Figure 9)

00655 will. In contrast to the execution example

00656 game Figure 9 shows the embodiment

00657 FIG. 16 a central hard remote 102,

00658 with a total of four predetermined breaking points 110, which

00659 before as in the example of Fiqur 15

00660 if formed by webs, the slots

00661 105, in which soft material

00662 rial is injected. 00663 Advantageous in this embodiment, in which

00664 a middle zone made of elastic material

00665 is provided, which is made of a hard shell

00666 is surrounded, that is the elastic forces,

00667 acting on the core part, from a compress

00668 sensitivity of the elastic zone 101 emerges.

00669 The trained with a star-shaped profile

00670 te hard core part 102 is thus after

00671 Destruction of the predetermined breaking points when entering

00672 ben the rod in the radial direction by the 00673 restoring force of the compressible plastic 00674 material of zone 101.

00675

00676 With regard to the outer contour and outer structure

00677 of this booklet refers to the description

00678 Figure 9 referenced, in particular the webs

00679 and the deepening as well as the fillings with

00680 softer material on the screwdriver top

00681 area have been described. 00682

00683 The split formation of the hard, transverse

00684 section-profiled core part has in particular

00685 re the advantage that the wing 109 or der-

00686 resemble the Angel 108 not only for torque

00687 transmission, but also as a counter

00688 hook for the axial fastening of the rod in the

00689 booklet Due to its profiling, this forms

00690 hard core part a torque transmission

00691 enlargement attack area. 00692

00693 The in the above description, the

00694 drawing and the features disclosed to the claims

00695 times of the invention can be used both individually and

00696 also in any combination for the realization

00697 Lich invention of importance. All Features disclosed in 00698 are essential to the invention.

00699 loaned. In the disclosure of the application

00700 hereby also the disclosure content of the associated

00701 priority documents / attached (

00702 of the pre-registration) with the full content

00703 included. 00704

Claims

00705 A n s p r ü c h e 00706

00707 1. Plastic injection molded booklet (H) for

00708 tools, especially screwdrivers, with

00709 zones of different hard plastics,

00710 of which the harder in those

00711 forces occurring

00712 non-deformable and the softer but less

00713 allows elastic deformations, and one

00714 central cavity (5,104) for

00715 the tang of a tool blade (2,108), because

00716 characterized in that the central cavity

00717 (5,104) in a core part (6,102) with

00718 profiled lateral surface (11,102 '),

00719 which is encapsulated by a jacket (7, 101)

00720, whereby the profile

00721 area (11,102 ') resulting recesses

00722 (8,111) until an approximately circular

00723 migen cross-sectional shape with a softer

00724 plastic are filled. 00725

00726 2. Booklet according to claim 1 or in particular

00727 afterwards, characterized in that the transverse

00728 cut the core part (6) about gear or

00729 is profiled in a star shape. 00730

00731 3. Booklet after one or more of the previously

00732 claims or in particular according to

00733 characterized in that the core part

00734 a harder plastic part, in particular 00735 polycarbonate.

00736

00737 4. Booklet after one or more of the previously

00738 claims or in particular according to

00739 characterized in that the core part (102) 00740 a the end face (104 ') of the cavity (104)

00741 overlapping dome (108). 00742

00743 5. Booklet according to one or more of the previously

00744 claims or in particular according to

00745 characterized in that the core part has at least

00746 at least one, in particular two or four,

00747 drawn in a uniform circumferential distribution

00748 arranged radial predetermined breaking points (110)

00749 det. 00750

00751 6. Booklet according to one or more of the previously

00752 claims or, in particular,

00753 characterized in that the predetermined breaking point

00754 len as between the lateral surface (102 ') and vertical

00755 material webs arranged on the inside of the lungs

00756 (HO) are formed. 00757

00758 7. Booklet according to one or more of the previous

00759 claims or, in particular,

00760 characterized in that the one

00761 elastic, in particular compressible

00762 plastic, in particular made of PE or PP or

00763 a jacket consisting of a plastic foam (101)

00764 has an overmolded casing (112) made of hard

00765 rem plastic material. 00766

00767 8. Booklet according to one or more of the previously

00768 claims or in particular according to

00769 characterized in that the softer, the

00770 penetrating zones of different 00771 hard plastics, of which the harder at

00772 caused by the actuation load

00773 is non-deformable, however

00774 allows slight elastic deformations, and 00775 the core part (6) of a jacket (7) approximately

00776 constant wall thickness from harder

00777 plastic is overmolded, the from the

00778 profiling of the lateral surface (11) result-

00779 the wells (8) until achieving one

00780 approximately circular cross-sectional shape with a

00781 softer plastic filled (fill 9)

00782 is 00783

00784 9. Booklet according to one or more of the previously

00785 claims or in particular according to

00786 characterized in that individual, in

00787 Fields one behind the other

00788 (F) of the filled-in depressions (8)

00789 a groove running in the circumferential direction

00790 (23) of the jacket (7) filling rib (24) 00791 softer plastic material are connected. 00792

00793 10. Booklet according to one or more of the previously

00794 claims or, in particular,

00795 characterized in that the groove (23) in

00796 its depth extends to the core part (6). 00797

00798 11. Booklet according to one or more of the previously

00799 claims or in particular according to

00800 characterized in that the core part (6)

00801 made of porous injection molded recycling material

00802 stands. 00803

00804 00805 00806 00807 00808