CN101607389B - Connecting rod of screwdriver head - Google Patents
Connecting rod of screwdriver head Download PDFInfo
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- CN101607389B CN101607389B CN2008101257205A CN200810125720A CN101607389B CN 101607389 B CN101607389 B CN 101607389B CN 2008101257205 A CN2008101257205 A CN 2008101257205A CN 200810125720 A CN200810125720 A CN 200810125720A CN 101607389 B CN101607389 B CN 101607389B
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- cart
- clamp assembly
- screwdriver head
- extension bar
- helping pull
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Abstract
The invention relates to a connecting rod of a screwdriver head, which comprises a body, a pull sleeve and a clamping assembly, wherein the outer surface of the body is provided with at least one limiting groove, and each limiting groove is provided with a limiting through hole communicated with a connecting groove; the pull sleeve is sleeved outside the body and can generate an axial displacement relation relative to the body; one end of the pull sleeve is convexly provided with at least one limiting block, the limiting blocks can be blocked outside the limiting grooves, and the pull sleeve can be shifted between the fixed position and the release position; the clamping assembly is the limiting groove arranged at the body; when the pull sleeve is located in the release position, the clamping assembly can be partly exposed in the connecting grooves by the limiting through holes and used for preventing screwdriver head falling; when the pull sleeve is located in the fixed position, the clamping assembly can be blocked by the limiting blocks so as to fix the screwdriver head.
Description
Technical field
The present invention relates to a kind of screwdriver structure, particularly a kind of extension bar structure of screwdriver head.
Background technology
Please refer to U.S. Patent number the 4th, 629, " Chuck gor tool shanks; particularlyscrewdriver bits " patent case of No. 375, it is a kind of extension bar that is used to be connected screwdriver head, this extension bar has a handle body, a fin that is located at handle body one side, a lining that is set in the handle body and the fin outside, and an end ring that is fixed on the handle body.
This handle body has a long and narrow bar portion, lining can drive fin and move, make a steel ball that is positioned at fin and then move, the end ring inboard is formed with the conical surface, and the conical surface is used for controlling the steel ball that is positioned on the fin, makes lining when the fixed position, steel ball can fix on the plane of screwdriver head, lining is when the off-position, and steel ball can not be subjected to the conical surface restriction of end ring, and this moment, screwdriver head can break away from the handle body.
In many working environments or occasion, when lining was moved to the off-position, screwdriver head was free to leave the handle body, but the problem that can cause screwdriver head to break away from arbitrarily like this, the place that causes screwdriver head to drop and be difficult to obtain.And lining moved to after the off-position, screwdriver head is the state that becomes flexible, because also be a kind of puzzlement when replacing other screwdriver head.
Though the someone designs and is used in that installing magnet adsorbs screwdriver head in the handle body at present, reach and prevent the effect that comes off, but in many environment with electronic equipment, be not allow to occur ferromagnetic article, otherwise influence the running of electronic instrument, particularly electronic signal and magnetic storing technology easily.
Moreover the lining that is set in the handle body must will adopt end ring to prevent that lining from deviating from the handle body, and extra so additional assembly forms the too much part of final products, and has increased whole weight.
And in use, utilize tool drives handle body to rotate, and just can drive the and then rotation of screwdriver head that is positioned at the handle body, reach the effect that rotation is turned object then.But a shortcoming is at this time arranged, because under many situations, turned the state (or by state of spiral shell pine) that is not screwed tight as yet liking, drive extension bar as if remaining with instrument this time, is a process that belongs to time-consuming.Because really need the torsion of instrument being turned the state that object soon is locked.
In addition, the operation of extension bar often is operation in having the occasion of oil stain, therefore, is easy to take place the problem of finger and lining slip in the pulling lining, pulling sleeve that can't be certain is formed on the puzzlement that is connected on screwdriver head or the replacing screwdriver head.
Summary of the invention
The technical problem that the extension bar institute desire of screwdriver head of the present invention solves is to be, it is when helping pull a cart in the off-position that a kind of extension bar is provided, and screwdriver head still can not be deviate from the extension bar structure of body.
The secondary objective of the extension bar of screwdriver head of the present invention is, a kind of clamp assembly that fixedly screwdriver head, block are helped pull a cart and clamped three kinds of effects of screwdriver head that has simultaneously is provided, and makes extension bar more simple and certain in operation.
Another purpose of the extension bar of screwdriver head of the present invention is, a kind of structure of helping pull a cart and can rotate synchronously with body is provided, feasible quilt turns object when not screwing tight the state of (or spiral shell pine) as yet, the user can utilize thumb and forefinger to dial commentaries on classics and help pull a cart, the body rotation of just can and then helping pull a cart synchronously then, and screwdriver head is driven turned the thing rotation, reach the effect that saves time of quick rotation.
The another purpose of the extension bar of screwdriver head of the present invention is, provide a kind of and can spur the structure of helping pull a cart really, make and in the occasion of hell and high water, can help pull a cart with finger pull easily, reach that making helps pull a cart and move to the effect of off-position really, and then the effect that obtains to replace screwdriver head fast or be connected screwdriver head.
For achieving the above object, the technical solution used in the present invention is:
A kind of extension bar of screwdriver head is characterized in that, includes:
One body, the one end has one and drives section, described body forms a linkage section in contrast to an end that drives section, described body drives in the section and is axially arranged with a driver slot, be axially arranged with a link slot in the described body linkage section, described link slot is used for connecting screwdriver head, and described external surface is formed with at least one stopper slot, and described stopper slot has a spacing holes that is communicated in link slot;
One helps pull a cart, be be set in described external, and can produce axial displacement relation with respect to described body, described helping pull a cart at one end convexes with at least one limited block, described limited block is can keep off in the described stopper slot outside, and described helping pull a cart can be moved between fixed position and off-position;
One clamp assembly, it is provided in a side of in the stopper slot of described body, described helping pull a cart when the off-position, described clamp assembly is can be exposed in the described link slot part via described spacing holes, be used for preventing that screwdriver head from coming off, described helping pull a cart when the fixed position, described clamp assembly can be blocked by described limited block and make fixedly screwdriver head of described clamp assembly.
Can summarize the present invention with regard to the above and have following advantage:
1. the extension bar of screwdriver head of the present invention, wherein said body is provided with a storage tank that is communicated in link slot, described helping pull a cart is provided with a stop surface, described clamp assembly can be exposed in the link slot part via storage tank, be used for clamping screwdriver head or fixing screwdriver head, and clamp assembly can block the stop surface of helping pull a cart, and prevent to help pull a cart body, so clamp assembly can have simultaneously, and fixedly screwdriver head, block helped pull a cart and clamped three kinds of effects of screwdriver head.
2. the extension bar of screwdriver head of the present invention, wherein said body is provided with limiting section, described helping pull a cart is provided with the limited block that is matched with limiting section, prevent to help pull a cart and rotate with respect to body, the user can be with thumb press at clicking section of helping pull a cart and protuberance, dial then that changeing helps pull a cart rotates body synchronously, drive the screwdriver head rotation simultaneously, and then reach the effect that quick rotation is turned object.
3. the extension bar of screwdriver head of the present invention, the wherein said outer surface of helping pull a cart convexes with protuberance, the user holds when box spanner, as long as thumb and forefinger are clamped the protuberance of helping pull a cart, and its excess-three finger still is held on the box spanner, just can reach the effect that moves to the off-position with helping pull a cart easily.
Description of drawings
Fig. 1 is the stereo appearance figure of extension bar first embodiment of the present invention;
Fig. 2 is the three-dimensional exploded view of extension bar first embodiment of the present invention;
Fig. 3 is the profile that extension bar first embodiment of the present invention is got along 3-3 line among Fig. 1;
Fig. 4 is the profile that extension bar first embodiment of the present invention is got along 4-4 line among Fig. 1;
Fig. 5 is the profile that extension bar first embodiment of the present invention is got along 5-5 line among Fig. 3;
Fig. 6 is the user mode figure of extension bar first embodiment of the present invention, and expression is helped pull a cart when the fixed position, and clamp assembly is screwdriver head fixedly;
Fig. 7 is the user mode figure of extension bar first embodiment of the present invention, and expression is helped pull a cart when the off-position, and clamp assembly can be clamped screwdriver head;
Fig. 8 is the three-dimensional exploded view of extension bar second embodiment of the present invention;
Fig. 9 is the drawing in side sectional elevation of extension bar second embodiment of the present invention;
Figure 10 is the three-dimensional exploded view of extension bar the 3rd embodiment of the present invention;
Figure 11 is the drawing in side sectional elevation of extension bar the 3rd embodiment of the present invention;
Figure 12 is the three-dimensional exploded view of extension bar the 4th embodiment of the present invention;
Figure 13 is the profilograph of extension bar the 4th embodiment of the present invention;
Figure 14 is the profile that extension bar the 4th embodiment of the present invention is got along 14-14 line among Figure 13;
Figure 15 is the three-dimensional exploded view of extension bar the 5th embodiment of the present invention;
Figure 16 is the drawing in side sectional elevation of extension bar the 5th embodiment of the present invention;
Figure 17 is the three-dimensional exploded view of extension bar the 6th embodiment of the present invention;
Figure 18 is the profilograph of extension bar the 6th embodiment of the present invention;
Figure 19 is the profile that extension bar the 6th embodiment of the present invention is got along 19-19 line among Figure 18;
Figure 20 is the three-dimensional exploded view of extension bar the 7th embodiment of the present invention;
Figure 21 is the profilograph of extension bar the 7th embodiment of the present invention;
Figure 22 is the profile that extension bar the 7th embodiment of the present invention is got along 22-22 line among Figure 21;
Figure 23 is the three-dimensional exploded view of extension bar the 8th embodiment of the present invention;
Figure 24 is the drawing in side sectional elevation of extension bar the 8th embodiment of the present invention;
Figure 25 is the three-dimensional exploded view of extension bar the 9th embodiment of the present invention;
Figure 26 is the profilograph of extension bar the 9th embodiment of the present invention;
Figure 27 is the profile that extension bar the 9th embodiment of the present invention is got along 27-27 line among Figure 26.
Description of reference numerals: 10-body; The 101-perforation; The 102-shoulder; 11-drives section; The 111-driver slot; 112-drives the plane; The 113-groove; The 12-linkage section; The 121-link slot; 122-connects the plane; The 123-corner; The 124-limiting section; The 13-storage tank; The 13a-stopper slot; The spacing holes of 14a-; The 13b-stopper slot; The spacing holes of 14b-; The 13c-stopper slot; The spacing holes of 14c-; The 15c-stopper slot; The 13d-stopper slot; The spacing holes of 14d-; The 15d-stopper slot; The 13e-stopper slot; The spacing holes of 14e-; The 15e-stopper slot; 20-helps pull a cart; The 201-shoulder; The 202-clicking section; 203-embossing lines; The 204-protuberance; 205-embossing lines; The 21-first socket section; The 211-stop surface; The 22-second socket section; The 23-limited block; The 24-limited block; The 25-limited block; The 30a-clamp assembly; The 31a-straightway; The 32a-arc; The 30b-clamp assembly; The 31b-straightway; The 32b-arc; The 30c-clamp assembly; The 31c-straightway; The 32c-arc; The 30d-clamp assembly; The 31d-straightway; The 32d-arc; The 30e-clamp assembly; The 31e-straightway; The 32e-arc; The 30g-clamp assembly; The 32g-arc; The 30h-clamp assembly; The 31h-straightway; The 32h-arc; The 40-keeper; The 41-keeper; The 42-keeper; The 50-reset assembly; The 80-screwdriver head; The 81-locating slot; The 90-box spanner; The 91-square toes; The 92-steel ball.
The specific embodiment
Referring to figs. 1 through Fig. 5, extension bar of the present invention includes a body 10, the 20 and clamp assembly 30a that help pull a cart; Wherein:
Please cooperate simultaneously with reference to Fig. 3, one end of described body 10 has one and drives section 11, body 10 forms a linkage section 12 in contrast to an end that drives section 11, body 10 drives in the section 11 and is axially arranged with a driver slot that is square 111, and described driver slot 111 is used for the square toes 91 (as Fig. 6) of branch sleeve spanner 90.Described driving section 11 can be made the square toes 91 of different sizes to meet different size.Described driver slot 111 has four driving planes 112 that are 90 degree angles each other, and these drive on planes 112 and are respectively equipped with a groove 113, and groove 113 is that supplier 91 steel ball 92 complements each other to form the location.Certainly, described driver slot 111 also is to make hexagon ring, so that the poroid driver slot 111 of hexagonal is connected hexagon prism.
Be axially arranged with one in described body 10 linkage sections 12 and be hexagonal link slot 121, described link slot 121 is used for connecting screwdriver head 80 (as Fig. 6).Link slot 121 has six 122, two on connection planes that are 120 degree angles each other and connects corner 123 of formation between the plane 122.Being provided with an axially extended perforation 101 between the driver slot 111 of body 10 and the link slot 121 gives driver slot 111 is communicated with link slot 121.
The driving section 11 and the linkage section 12 of described body 10 all have circular outline, and the external diameter of linkage section 12 makes body 10 linkage sections 12 and drive to form a shoulder 102 between the section 11 less than the external diameter that drives section 11.Please cooperate simultaneously with reference to Fig. 4, described body 10 is equipped with a storage tank 13 at the outer surface of linkage section 12 near link slot 121 opening parts, be formed with at least one stopper slot 13a in the described storage tank 13, according to shown in the figure being two stopper slot 13a, these two stopper slot 13a separately have a spacing holes 14a who is communicated in a corner 123 in the link slot 121.
Described helping pull a cart 20 is to be set in outside the described body 10, and can produce axial displacement relation with respect to described body 10.Described helping pull a cart is provided with first a socket section 21 that is set in linkage section 12 and one in 20 and is set in the second socket section 22 that drives section 11, the interior profile of these two socket sections 21,22 is rounded, and the internal diameter of the first socket section 21 makes and forms a shoulder 201 between the first socket section 21 and the second socket section 22 less than the internal diameter of the second socket section 22.
Be provided with a reset assembly 50 between the shoulder 102 of described help pull a cart 20 shoulder 201 and described body 10, described reset assembly 50 provides described helping pull a cart 20 to produce towards the axially movable strength of link slot 121 opening directions with respect to body 10.Reset assembly 50 in the present embodiment is one to be set in the cylindrical helical spring of body 10 linkage sections 12 outsides.Described 20 vicinities of helping pull a cart are formed with a stop surface 211 in the position of the first socket section, 21 openings, as Fig. 4.
Described 20 openings in the first socket section 21 of helping pull a cart convex with at least one limited block 23, and described body 10 is provided with at least one limiting section 124 at the outer surface of linkage section 12, described limiting section 124 is the shapes that are matched with described limited block 23, to prevent helping pull a cart 20 with respect to body 10 rotations.With the cross section perpendicular to 20 axis of helping pull a cart, these two limited blocks 23 are to be embodied as planar structure, and these two limiting sections 124 also are embodied as planar structure, and limited block 23 and limiting section 124 are cooperatively interacted, and prevent to help pull a cart 20 with respect to body 10 rotations.So, during 10 rotations of described body, described 20 i.e. and then bodies 10 rotations synchronously of helping pull a cart, also, described helping pull a cart 20 only can move axially with respect to body 10, and can't rotate with respect to body 10.Described in the present embodiment helping pull a cart 20 is to be provided with two limited blocks 23, and described body 10 is provided with two limiting sections 124.
Described 20 the surface, outside of helping pull a cart is formed with one and dials the clicking section 202 of commentaries on classics for the user, and making helps pull a cart 20 is driven body 10 rotations when rotating synchronously.And the contiguous opening part in the second socket section 22 in surface, 20 outside of helping pull a cart convexes with a protuberance 204 that radially extends, described protuberance 204 spurs for users and describedly helps pull a cart 20, and making helps pull a cart 20 is able to move axially towards driving section 11 openings one end with respect to body 10.Described clicking section 202 also is provided with embossing lines 203,205 with the outer surface of described protuberance 204, dials the frictional force that commentaries on classics was helped pull a cart at 20 o'clock to increase the user.
Please cooperate simultaneously with reference to Fig. 5, described clamp assembly 30a is provided in a side of the storage tank 13 of described body 10, and described clamp assembly 30a is the corner 123 that can local be exposed to link slot 121 via described spacing holes 14a, as Fig. 5.Described clamp assembly 30a is made of at least one arc 32a and at least one straightway 31a, the arc 32a of described clamp assembly 30a is provided in a side of the storage tank 13 of linkage section 12, and to be exposed to storage tank 13 outer and can keep off and help pull a cart 20 stop surface 211 in described arc 32a part, and therefore described clamp assembly 30a can prevent to help pull a cart and 20 break away from bodies 10.
The straightway 31a of described clamp assembly 30a is contained in the stopper slot 13a, and the outside of straightway 31a can be blocked for limited 23, make straightway 31a can local be exposed to the corner 123 of link slot 121 via spacing holes 14a, to reach the effect that clamps screwdriver head 80, effectively avoid causing taking place the problem that screwdriver head 80 falls because of gravitational attraction makes screwdriver head 80 break away from link slot 121.
In the present embodiment, described clamp assembly 30a has two straightway 31a and three arc 32a that separated by straightway 31a.The axis of two straightway 31a of described clamp assembly 30a is parallel to each other, and perpendicular to link slot 121 axial connecting lines to the formed radius of spacing holes 14a, and being fit to the shape and the part of storage tank 13, remaining arc 32a of described clamp assembly 30a is exposed to outside the storage tank 13, described clamp assembly 30a relies on the structural design of described these straightways 31a and these arcs 32a, make clamp assembly 30a can remain on the storage tank 13 of body 10, have simultaneously and limit 20 effects of deviating from body 10 of helping pull a cart.Described clamp assembly 30a relies on described limited block 23 to block straightway 31a and arc 32a and the design of helping pull a cart between 20 stop surfaces 211, makes clamp assembly 30a can have fixedly screwdriver head 80, clamp screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Fig. 6 and Fig. 7, when extension bar of the present invention is used in box spanner 90, the driver slot 111 of body 10 is connected with the square toes 91 of box spanner 90, the grooves 113 that the steel ball 92 of square toes 91 is matched with in the driver slot 111 form the location.When being turned the object (not shown) when being in the state that does not screw tight as yet or loosened, the user can help pull a cart 20 clicking section 202 and protuberance 204 with thumb press, dial then that changeing helps pull a cart 20 rotates body 10 synchronously, drive screwdriver head 80 rotations simultaneously, and then reach the effect that quick rotation is turned object.And, the suitable weak point of extension bar entire length of the present invention, make help pull a cart 20 with very approaching of the distance of box spanner 90, so the user only needs just can to dial commentaries on classics with thumb and helps pull a cart and 20 reach the effect that quick rotation is driven object.
Described helping pull a cart 20 can be moved between latched position and off-position, when helping pull a cart 20 when being positioned at latched position, 20 the shoulder 201 of helping pull a cart is subjected to the pushing tow of reset assembly 50, and the arc 32a of 20 the stop surface 211 clamped assembly 30a of helping pull a cart is blocked, and 20 can not break away from body 10 so help pull a cart.And, 20 the limited block 23 of helping pull a cart is positioned at the outside of body 10 stopper slot 13a just, cover the open side of stopper slot 13a, and the straightway 31a that can the keep off outside at clamp assembly 30a, make the permanent protrusion of the straightway 31a that is exposed to link slot 121 corners 123 at spacing holes 14a, allow straightway 31a be fixed in the locating slot 81 of screwdriver head 80, guarantee that screwdriver head 80 is to be fixed in the link slot 121 of body 10 and can not deviate from body 10.
20 will be when latched position move to the off-position when helping pull a cart, only need utilize thumb and forefinger to clamp to help pull a cart 20 protuberance 204, and impose pulling force along body 10 axis directions, making helps pull a cart 20 moves towards body 10 driver slots 111 openings one end and to get final product.That is to say that the user holds when box spanner 90, as long as thumb and forefinger are clamped 20 the protuberance 204 of helping pull a cart, and its excess-three finger still is held on the box spanner 90, just can reach easily 20 effects that move to the off-position of helping pull a cart.
When helping pull a cart 20 when being positioned at the off-position, 20 the limited block 23 of helping pull a cart leaves the stopper slot 13a outside of body 10, limited block 23 no longer blocks the straightway 31a of clamp assembly 30a, the elasticity that this moment, clamp assembly 30a utilization itself was had, allow the still flexible locating slot 81 that is clipped in screwdriver head 80 of straightway 31a, so screwdriver head 80 can not break away from the link slot 121 of body 10 arbitrarily, the user can extract screwdriver head 80 out body 10 link slots 121 with the another hand.Further, when the user is pulled outwardly a segment distance with screwdriver head 80 in link slot 121 after, as Fig. 7, allow the locating slot 81 of screwdriver head 80 leave the straightway 31a of clamp assembly 30a, screwdriver head 80 still can not break away from the link slot 121 of body 10 arbitrarily, and this is because the still flexible place, end angle that is clipped in screwdriver head 80 outer surfaces of the straightway 31a of clamp assembly 30a.And the end angular diameter of screwdriver head 80 outer surfaces is the diameters greater than screwdriver head 80 locating slots 81, therefore the straightway 31a of the clamp assembly 30a reaction force that is clipped in the place, end angle of screwdriver head 80 can be clipped in the reaction force of screwdriver head 80 locating slots 81 greater than straightway 31a, so can guarantee that more screwdriver head 80 can not break away from the link slot 121 of body 10 arbitrarily, and 20 the limited block 23 of helping pull a cart has no longer blocked the straightway 31a of clamp assembly 30a, so straightway 31a has the space to the distortion of the stopper slot 13a outside, hence one can see that, screwdriver head 80 can 20 not be in the off-position and breaks away from the link slot 121 of body 10 because of helping pull a cart, and screwdriver head 80 can not fall because of gravitational attraction yet.
With reference to Fig. 8 and Fig. 9, be second embodiment of the present invention, present embodiment is identical with aforementioned first embodiment haply, and its difference is in the form difference in described clamp assembly 30b.The assembly of first embodiment of coexisting mutually in the present embodiment adopts the same element numbers, only makes new element numbers at different assemblies, is beneficial to understand the explanation of present embodiment.Below other embodiment also do explanation in the same manner.
Described body 10 is equipped with a storage tank 13 at the outer surface of linkage section 12 near link slot 121 opening parts, be formed with a stopper slot 13b in the described storage tank 13, described stopper slot 13b has a spacing holes 14b who is communicated in a corner 123 in the link slot 121.
Described 20 openings in the first socket section 21 of helping pull a cart convex with a limited block 23, and described body 10 is provided with a limiting section 124 at the outer surface of linkage section 12, with cross section perpendicular to 20 axis of helping pull a cart, described limited block 23 is to be embodied as planar structure, described limiting section 124 also is embodied as planar structure, limited block 23 and limiting section 124 are cooperatively interacted, prevent to help pull a cart 20 with respect to body 10 rotations.
Described clamp assembly 30b has a straightway 31b and two arc 32b that separated by straightway 31b.The axis normal of the straightway 31b of described clamp assembly 30b in link slot 121 axle center to the formed radius of line of spacing holes 14b, and straightway 31b can block for limited 23, and being fit to the shape and the part of storage tank 13, remaining arc 32b of described clamp assembly 30b is exposed to outside the storage tank 13, described clamp assembly 30b relies on described limited block 23 to block straightway 31b, and arc 32b and the design between 20 stop surfaces 211 of helping pull a cart, make clamp assembly 30b can have fixedly screwdriver head 80, clamp screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
So can know, when making the structural change of equivalent function for structure illustrated among the present invention, the category that still belongs to the present invention and protected.
With reference to Figure 10 and Figure 11, be the 3rd embodiment of the present invention, present embodiment is identical with aforementioned first embodiment haply, and its difference is in the form difference in clamp assembly 30c.
Described body 10 is equipped with a storage tank 13 at the outer surface of linkage section 12 near link slot 121 opening parts, be formed with two stopper slot 13c, 15c in the described storage tank 13, be defined herein as one first stopper slot 13c and one second stopper slot 15c, the described first stopper slot 13c has a spacing holes 14c who is communicated in a corner 123 in the link slot 121.
Described 20 openings in the first socket section 21 of helping pull a cart convex with two difform limited blocks 23,24, be defined herein as one first limited block 23 and one second limited block 24, and described body 10 is provided with a limiting section 124 at the outer surface of linkage section 12.With cross section perpendicular to 20 axis of helping pull a cart, described first limited block 23 is embodied as globoidal structure, described first limited block 23 is to be embodied as planar structure, described limiting section 124 also is embodied as planar structure, first limited block 23 is cooperatively interacted with limiting section 124, prevent to help pull a cart 20 with respect to body 10 rotations.
Described clamp assembly 30c has two straightway 31c and two arc 32c that separated by straightway 31c.The axis of two straightway 31c of described clamp assembly 30c is perpendicular to one another, be located at straightway 31c axis in the first stopper slot 13c and be along link slot 121 axle center to the formed radius of line of spacing holes 14c and extend the protruding spacing holes 14c that exposes, and this straightway 31c can be blocked by second limited block 24 in the outside, and the straightway 31c that is located in the second stopper slot 15c is contained in the second stopper slot 15c.Shape and part that remaining arc 32c of described clamp assembly 30c is fit to storage tank 13 are exposed to outside the storage tank 13, described clamp assembly 30c relies on second limited block 24 to block straightway 31c and arc 32c and the design of helping pull a cart between 20 stop surfaces 211, makes clamp assembly 30c can have fixedly screwdriver head 80, clamp screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Figure 12 to Figure 14, be the 4th embodiment of the present invention, present embodiment is identical with aforementioned first embodiment haply, and its difference is in and also is provided with a keeper 40 between clamp assembly 30d and screwdriver head 80.
Described body 10 is equipped with a storage tank 13 at the outer surface of linkage section 12 near link slot 121 opening parts, be formed with two stopper slot 13d, 15d in the described storage tank 13, be defined herein as one first stopper slot 13d and one second stopper slot 15d, the described first stopper slot 13d has a spacing holes 14d who is communicated in a corner 123 in the link slot 121.Described keeper 40 is provided in a side of in the described first stopper slot 13d, and described keeper 40 is local corners 123 that are exposed to link slot 121 via spacing holes 14d.Described keeper 40 is to be made as the first quarter moon shape.
Described 20 openings in the first socket section 21 of helping pull a cart convex with two difform limited blocks 23,24, be defined herein as one first limited block 23 and one second limited block 24, and described body 10 is provided with a limiting section 124 at the outer surface of linkage section 12.With cross section perpendicular to 20 axis of helping pull a cart, described first limited block 23 is embodied as globoidal structure, described first limited block 23 is to be embodied as planar structure, described limiting section 124 also is embodied as planar structure, first limited block 23 is cooperatively interacted with limiting section 124, prevent to help pull a cart 20 with respect to body 10 rotations.
Described clamp assembly 30d has a straightway 31d and two arc 32d that separated by straightway 31d.The arc 32d of described clamp assembly 30d be cover described keeper 40 outsides and make described keeper 40 via spacing holes 14d the local corner 123 that is exposed to link slot 121, and this arc 32d can be blocked by second limited block 23, and the straightway 31d that is located in the second stopper slot 15d is contained in the second stopper slot 15d.Shape and part that the arc 32d of described clamp assembly 30d is fit to storage tank 13 are exposed to outside the storage tank 13, rely on the collocation of described clamp assembly 30d and described keeper 40, make clamp assembly 30d and keeper 40 can have fixedly screwdriver head 80, clamping screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Figure 15 and Figure 16, be the 5th embodiment of the present invention, present embodiment is identical with aforementioned the 4th embodiment haply, and its difference is in the form difference in keeper 41.
Described keeper 41 is provided in a side of in the described first stopper slot 13d, and described keeper 41 is local corners 123 that are exposed to link slot 121 via spacing holes 14d.Described keeper 41 is to be made as the E word shape.The arc 32d of described clamp assembly 30d be cover described keeper 41 and make described keeper 41 via spacing holes 14d the local corner 123 that is exposed to link slot 121, and this arc 32d can be blocked by second limited block 24, rely on the collocation of described clamp assembly 30d and described keeper 41, make clamp assembly 30d and keeper 41 can have fixedly screwdriver head 80, clamping screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Figure 17 to Figure 19, be the 6th embodiment of the present invention, present embodiment is identical with aforementioned first embodiment haply, and its difference is in and also is provided with a keeper 42 between clamp assembly 30e and screwdriver head 80.
Described body 10 is equipped with a storage tank 13 at the outer surface of linkage section 12 near link slot 121 opening parts, be formed with two stopper slot 13e, 15e in the described storage tank 13, be defined herein as one first stopper slot 13e and one second stopper slot 15e, the described first stopper slot 13e has a spacing holes 14e who is communicated in a corner 123 in the link slot 121.Described keeper 42 is provided in a side of in the described first stopper slot 13e, and described keeper 42 is local corners 123 that are exposed to link slot 121 via spacing holes 14e.Described keeper 42 is to be made as spherical shape.
Described 20 openings in the first socket section 21 of helping pull a cart convex with two limited blocks 23, and described body 10 is provided with two limiting sections 124 at the outer surface of linkage section 12.With the cross section perpendicular to 20 axis of helping pull a cart, described limited block 23 is to be embodied as planar structure, and described limiting section 124 also is embodied as planar structure, and limited block 23 and limiting section 124 are cooperatively interacted, and prevents to help pull a cart 20 with respect to body 10 rotations.
Described clamp assembly 30e has two straightway 31e and three arc 32e that separated by straightway 31e.The straightway 31e of described clamp assembly 30e be cover described keeper 42 and make described keeper 42 via spacing holes 14e the local corner 123 that is exposed to link slot 121, and this straightway 31e can block for limited 23.Shape and part that the arc 32e of described clamp assembly 30e is fit to storage tank 13 are exposed to outside the storage tank 13, rely on the collocation of described clamp assembly 30e and described keeper 42, make clamp assembly 30e and keeper 42 can have fixedly screwdriver head 80, clamping screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Figure 20 to Figure 22, be the 7th embodiment of the present invention.Present embodiment is identical with aforementioned the 4th embodiment haply, and its difference is in 20 can be with respect to body 10 rotation in helping pull a cart.
Described 20 openings in the first socket section 21 of helping pull a cart convex with the limited block 25 of a ring-type, and described body 10 then is not provided with any limiting section at the outer surface of linkage section 12.Therefore, described helping pull a cart 20 can be with respect to body 10 rotation.
Described clamp assembly 30g is located in the storage tank 13 and has an arc 32g.The arc 32g of described clamp assembly 30g be cover described keeper 40 outsides and make described keeper 40 via spacing holes 14d the local corner 123 that is exposed to link slot 121, and this arc 32g can block for limited 25.Shape and part that the arc 32g of described clamp assembly 30g is fit to storage tank 13 are exposed to outside the storage tank 13, rely on the collocation of described clamp assembly 30g and described keeper 40, make clamp assembly 30g and keeper 40 can have fixedly screwdriver head 80, clamping screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Figure 23 and Figure 24, be the 8th embodiment of the present invention, present embodiment is identical with aforementioned the 7th embodiment haply, and its difference is in the form difference in keeper 41.
Described keeper 41 is provided in a side of in the described first stopper slot 13d, and described keeper 41 is local corners 123 that are exposed to link slot 121 via spacing holes 14d.Described keeper 41 is to be made as the E word shape.The arc 32g of described clamp assembly 30g be cover described keeper 41 and make described keeper 41 via spacing holes 14d the local corner 123 that is exposed to link slot 121, and this arc 32g can block for limited 25, rely on the collocation of described clamp assembly 30g and described keeper 41, make clamp assembly 30g and keeper 41 can have fixedly screwdriver head 80, clamping screwdriver head 80 and limit the 20 three kinds of effects of deviating from body 10 of helping pull a cart.
With reference to Figure 25 to Figure 27, be the 9th embodiment of the present invention.Present embodiment is identical with aforementioned the 3rd embodiment haply, and its difference is in 20 can be with respect to body 10 rotation in helping pull a cart.
Described 20 openings in the first socket section 21 of helping pull a cart convex with the limited block 25 of a ring-type, and described body 10 then is not provided with any limiting section at the outer surface of linkage section 12.Therefore, described helping pull a cart 20 can be with respect to body 10 rotation.
Described clamp assembly 30h is located in the storage tank 13 and has a straightway 31h and an arc 32h.The straightway 31h of described clamp assembly 30h is the local corner 123 that is exposed to link slot 121 via spacing holes 14c, and this straightway 31h can block for limited 25.Shape and part that the arc 32h of described clamp assembly 30h is fit to storage tank 13 are exposed to outside the storage tank 13, therefore, described clamp assembly 30h can have fixedly screwdriver head 80, clamp screwdriver head 80 and the restriction 20 three kinds of effects of deviating from body 10 of helping pull a cart.
More than explanation is just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.
Claims (19)
1. the extension bar of a screwdriver head is characterized in that, includes:
One body, the one end has one and drives section, described body forms a linkage section in contrast to an end that drives section, described body drives in the section and is axially arranged with a driver slot, be axially arranged with a link slot in the described body linkage section, described link slot is used for connecting screwdriver head, and described external surface is formed with at least one stopper slot, and described stopper slot has a spacing holes that is communicated in link slot;
One helps pull a cart, be be set in described external, and can produce axial displacement relation with respect to described body, described helping pull a cart at one end convexes with at least one limited block, described limited block is can keep off in the described stopper slot outside, and described helping pull a cart can be moved between fixed position and off-position;
One clamp assembly, it is by at least one arc and at least one straightway is constituted or be made of an arc, described clamp assembly is provided in a side of in the stopper slot of described body, described helping pull a cart when the off-position, described clamp assembly is can be exposed in the described link slot part via described spacing holes, be used for preventing that screwdriver head from coming off, described helping pull a cart when the fixed position, described clamp assembly can be blocked by described limited block and make fixedly screwdriver head of described clamp assembly.
2. the extension bar of screwdriver head according to claim 1, it is characterized in that: described body is equipped with a storage tank at the outer surface of linkage section, described stopper slot is formed in the described storage tank, the arc of described clamp assembly is provided in a side of in the storage tank of described linkage section, the straightway of described clamp assembly is to be contained in the described stopper slot, and described straightway blocked by described limited block, and the part is exposed to described link slot via described spacing holes to make described straightway.
3. the extension bar of screwdriver head according to claim 2, it is characterized in that: described clamp assembly has a straightway and two arcs that separated by described straightway, to the line of described spacing holes, and remaining arc of described clamp assembly is fit to the shape and the part of described storage tank and is exposed to outside the described storage tank axis normal of the straightway of described clamp assembly in described link slot axle center.
4. the extension bar of screwdriver head according to claim 2, it is characterized in that: described clamp assembly has two straightways and three arcs that separated by described straightway, two straightways of described clamp assembly separately perpendicular to described link slot axial connecting line to the line of described spacing holes, and remaining arc of described clamp assembly is fit to the shape and the part of described storage tank and is exposed to outside the described storage tank.
5. the extension bar of screwdriver head according to claim 2, it is characterized in that: described clamp assembly has two straightways and two arcs that separated by described straightway, the straightway axis of described clamp assembly is to extend the protruding described spacing holes that exposes along described link slot axle center to the line of described spacing holes, and shape and part that remaining arc of described clamp assembly is fit to described storage tank are exposed to outside the described storage tank.
6. according to the extension bar of claim 4 or 5 described screwdriver heads, it is characterized in that: the axis of two straightways of described clamp assembly is parallel to each other.
7. according to the extension bar of claim 4 or 5 described screwdriver heads, it is characterized in that: the axis of two straightways of described clamp assembly is perpendicular to one another.
8. according to the extension bar of each described screwdriver head in the claim 1 to 5, it is characterized in that: also be provided with a keeper between described clamp assembly and the screwdriver head, described keeper is provided in a side of in the described stopper slot, and the described keeper of described clamp assembly pushing tow, making described keeper is that the part is exposed to described link slot via described spacing holes.
9. the extension bar of screwdriver head according to claim 1, it is characterized in that: described body is equipped with a storage tank at the outer surface of linkage section, described stopper slot is formed in the described storage tank, the arc of described clamp assembly is provided in a side of the storage tank of described linkage section, also be provided with a keeper between described clamp assembly and the screwdriver head, described keeper is provided in a side of in the described stopper slot, and described clamp assembly is the described keeper of pushing tow, and making described keeper is that the part is exposed to described link slot via described spacing holes.
10. the extension bar of screwdriver head according to claim 1, it is characterized in that: be provided with a stop surface in described the helping pull a cart, described clamp assembly block prevents the described described body of helping pull a cart in described stop surface.
11. the extension bar of screwdriver head according to claim 1 is characterized in that: with the cross section perpendicular to the described axis of helping pull a cart, described limited block is a circulus.
12. the extension bar of screwdriver head according to claim 1 is characterized in that: with the cross section perpendicular to the described axis of helping pull a cart, described limited block is a globoidal structure.
13. the extension bar of screwdriver head according to claim 1 is characterized in that: with the cross section perpendicular to the described axis of helping pull a cart, described limited block is a planar structure.
14. the extension bar of screwdriver head according to claim 13, it is characterized in that: described body is provided with at least one limiting section at the outer surface of linkage section, described limiting section is to match with the shape of described limited block, to prevent described helping pull a cart with respect to described body rotation.
15. the extension bar of screwdriver head according to claim 1, it is characterized in that: be provided with a shoulder in described the helping pull a cart, described body is provided with a shoulder outward, be provided with a reset assembly between the shoulder of described shoulder of helping pull a cart and described body, described reset assembly provides described helping pull a cart to produce towards the axially movable strength of link slot opening direction with respect to described body.
16. the extension bar of screwdriver head according to claim 1, it is characterized in that: described surface, outside of helping pull a cart is formed with a clicking section of dialling commentaries on classics for the user, described surface, outside of helping pull a cart convexes with a protuberance that radially extends, described protuberance spurs described helping pull a cart for the user, described helping pull a cart can be moved axially towards driving section opening one end with respect to described body, described protuberance can also allow the user dial commentaries on classics fast simultaneously, described protuberance is provided in a side of described helping pull a cart and goes up an end of contiguous described body driver slot opening, and the outer surface of described clicking section and described protuberance is provided with increases the embossing lines that the user dials the frictional force when changeing described helping pull a cart.
17. the extension bar of screwdriver head according to claim 1, it is characterized in that: described link slot is hexagon, described link slot has six connection planes that are 120 degree angles each other, these two connect corner of formation between the plane, and described spacing holes is located on the described corner.
18. the extension bar of screwdriver head according to claim 1 is characterized in that: described driver slot is square, and described driver slot is used for the square toes of branch sleeve spanner.
19. the extension bar of screwdriver head according to claim 1 is characterized in that: it is poroid that described driver slot is hexagonal, and described driver slot is used for being connected hexagon prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101257205A CN101607389B (en) | 2008-06-18 | 2008-06-18 | Connecting rod of screwdriver head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101257205A CN101607389B (en) | 2008-06-18 | 2008-06-18 | Connecting rod of screwdriver head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101607389A CN101607389A (en) | 2009-12-23 |
| CN101607389B true CN101607389B (en) | 2010-12-15 |
Family
ID=41481382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101257205A Active CN101607389B (en) | 2008-06-18 | 2008-06-18 | Connecting rod of screwdriver head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101607389B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120292865A1 (en) * | 2010-03-10 | 2012-11-22 | Makita Corporation | Falling prevention structure for socket of power tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629375A (en) * | 1983-08-24 | 1986-12-16 | Wera Werk Hermann Werner Gmbh & Co. | Chuck for tool shanks, particularly screwdriver bits |
| CN2093068U (en) * | 1990-07-24 | 1992-01-15 | 武汉市汉江工具厂 | Ratchet type wrench for car tyre |
| CN2194241Y (en) * | 1994-02-08 | 1995-04-12 | 曾木茂 | Ratchet structure of box end wrench |
| CN2333497Y (en) * | 1998-07-14 | 1999-08-18 | 谢智庆 | Chucking structure of ratchet wrench socket |
| CN1895852A (en) * | 2005-07-13 | 2007-01-17 | 陈泰佐 | Positioning fastener of manual tool |
-
2008
- 2008-06-18 CN CN2008101257205A patent/CN101607389B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629375A (en) * | 1983-08-24 | 1986-12-16 | Wera Werk Hermann Werner Gmbh & Co. | Chuck for tool shanks, particularly screwdriver bits |
| CN2093068U (en) * | 1990-07-24 | 1992-01-15 | 武汉市汉江工具厂 | Ratchet type wrench for car tyre |
| CN2194241Y (en) * | 1994-02-08 | 1995-04-12 | 曾木茂 | Ratchet structure of box end wrench |
| CN2333497Y (en) * | 1998-07-14 | 1999-08-18 | 谢智庆 | Chucking structure of ratchet wrench socket |
| CN1895852A (en) * | 2005-07-13 | 2007-01-17 | 陈泰佐 | Positioning fastener of manual tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101607389A (en) | 2009-12-23 |
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