CN100391697C - Chuck for receiving tools operated by rotating around the axis thereof - Google Patents

Chuck for receiving tools operated by rotating around the axis thereof Download PDF

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Publication number
CN100391697C
CN100391697C CNB038134896A CN03813489A CN100391697C CN 100391697 C CN100391697 C CN 100391697C CN B038134896 A CNB038134896 A CN B038134896A CN 03813489 A CN03813489 A CN 03813489A CN 100391697 C CN100391697 C CN 100391697C
Authority
CN
China
Prior art keywords
cutter head
chuck
container cavity
cover
instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB038134896A
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Chinese (zh)
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CN1703304A (en
Inventor
马丁·斯特劳赫
迈克尔·埃布尔
安德烈·米勒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Publication of CN1703304A publication Critical patent/CN1703304A/en
Application granted granted Critical
Publication of CN100391697C publication Critical patent/CN100391697C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00Screwdrivers
    • B25B15/001Screwdrivers characterised by material or shape of the tool bit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007Connections or joints between tool parts
    • B25B23/0035Connection means between socket or screwdriver bit and tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02Arrangements for handling screws or nuts
    • B25B23/08Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/12Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means

Abstract

The invention relates to a chuck for receiving tools (1) that are operated by rotating around the axis thereof, particularly screwdriver bits, comprising an insertion section (3) which is provided with a seat cavity (2) having a non-circular cross-sectional area (3). The tool can be locked in said seat cavity (2) by means of a holding element (4) which is assigned to the cavity wall in order to prevent the tool from being withdrawn from the seat cavity (2). The holding element (4) can be deactivated by displacing an actuating member, particularly in the form of an actuating sleeve (5). The tool (1) rests backwards against the seat cavity (2). According to the invention, the tool (1) can be displaced from the resting position in the direction of the opening of the seat cavity (2) by actuating the actuating sleeve (5). In order to facilitate removal of the bit, the inventive chuck also comprises means (15, 16, 17) for releasing the face (1') of the bit and a magnet (9) which retains the bit in the cavity from the resting position.

Description

Be used to hold the chuck of instrument
Technical field
The present invention relates to that a kind of be used to hold can be by the instrument that uses around its rotation, the chuck of screwdriver plug-in unit particularly, it has insertion (insertion) part, this insertion portion has the non-circular container cavity of cross section, wherein the container cavity instrument can be fixing to prevent to be drawn out container cavity by the mode of the retaining element that is associated with the chamber wall, its retaining element can pass through control assembly, the slip of particularly controlling the control assembly of cover form is moved and is stopped to work, and tool support is at the rear portion of container cavity.
Background technology
Such chuck is introduced by DE 29 34 428 and DE 199 32 369.In these documents, the polygon of cutter head partly is engaged in the polygonal hole of insertion portion.The retaining element that is formed by ball works on the cutter head outer surface, particularly on its edge or edge notches.In the inclined side of sphere diameter on being pressed onto the polygon side inwardly or by control cover is pressed in the angle kerve.Needed power provides by the compression spring, and described compression spring loads the control cover, and the control cover overcomes spring force and moves along release direction.
Thereby the magnet that forms the container cavity base portion is set increases bed knife.Especially, the short and thin cutter head power that only can overcome magnet is removed by chuck very difficultly.
Summary of the invention
Therefore, the present invention is based on according to the mode that helps using and further develops the purpose of the chuck of general type, and particularly makes things convenient for shifting out of cutter head.
For achieving the above object, according to the present invention, a kind of chuck that is used to hold instrument is provided, instrument can be by using around its rotation, this chuck has insertion portion, insertion portion has the non-circular container cavity of cross section, in container cavity, instrument can rely on the retaining element that is associated with the chamber wall to fix and prevent to be drawn out container cavity, retaining element can pass through control assembly, the slip of particularly controlling the control assembly of cover form is moved and was lost efficacy, tool support is at the rear portion of container cavity, and have the part that sandwiches that is matched with in the cover portion, it is characterized in that control assembly can be locked in it and be maintained fixed element owing to sandwich part with respect to the mobile and inoperative position of the activity of cover portion.
Preferably, control assembly can rely on the locking of at least one baffle element, and baffle element is arranged in the wall otch and moves to towards control assembly and stops in the depression.
Preferably, baffle element is a ball, and stops that depression is cannelure.
Preferably, sandwiching part when sliding in the cover portion, baffle element partly is arranged at and sandwiches being displaced sideways in the depression in the part, and is pulling out when sandwiching part, and baffle element partly is supported on the rear end by the lateral surfaces that sandwiches part.
Preferably, described instrument is the screwdriver plug-in unit.According to the present invention, at first and substantially provide, instrument can move to beyond the Support Position by the opening towards container cavity of actuating of control cover.Rely on the exquisite part of advantage of the present invention, this by and shift out parts with the aid that the control cover moves and realize.This aid shifts out parts can be the pusher that is associated with the base portion of container cavity.This pusher is dragged by the holder of control cover.This holder is dragged and is moved preferably along carrying out with the mobile phase direction together of control cover.Preferred pusher is engaged on the rear end face of instrument, thereby it is partly moved to outside the container cavity, and the length that makes the instrument that can hold give prominence to the part of container cavity increases.In addition, if instrument props up the magnet that is formed on the container cavity base portion, then owing to moving of pusher separated the end face of instrument and magnet.Form the gap.The bed knife that acts on the instrument by magnet reduces owing to this gap.Retaining element is preferably the pressure piece on the handle of sandwiching of the instrument that radially acts on.This pressure piece can form a ball.Especially, this pressure piece forms and installs according to the mode identical with DE 101 41 668.7.The control cover can oppositely move with spring force.In preferable configuration, pusher can form by the part of this type spring.Yet, can also provide pusher only to work by the part of control sleeve spring.The rearward end of control sleeve spring can be by the groove combination.In preferable configuration, pusher forms by non-angular (angled-off) end that is against the compression helical spring on the insertion portion.This compression helical spring one end can be supported on the support ring, and support ring is installed in the circumferential groove of insertion portion with the axial restraint position.The other end of compression helical spring is supported on by the control cover and draws in stopping on the shoulder of cover formation.This end of compression helical spring has radially the inwardly part of guiding.This part is outstanding by the groove in the insertion portion, and protrudes in the container cavity.The angle part of compression helical spring end can be moving along the chamber wall shift when operating sleeve moves.Pusher or spring end have certain one-movement-freedom-degree with respect to end face or with respect to the inclined end portion edge of cutter head, make control cover clamping kept man of a noblewoman move earlier, thereby authorized pressure spare are removed.Only when this maintenance of instrument had discharged, the end of pusher or spring propped up cutter head, thereby along outside direction mobile cutter head in container cavity.
Another aspect of the present invention provides the end face of instrument to prop up magnet.For realizing aforesaid purpose, suggestion is provided with and can be used for device that the cutter head end face is separated by magnet.These devices can make the cutter head end face no longer contact with magnet.This can realize by said method.Yet, also magnet has been proposed and cutter head separates, promptly cutter head remains on its insertion position in container cavity.The result that magnet and cutter head end face separate is that the bed knife that acts on the cutter head by magnet obviously reduces, even make little particularly short cutter head also can successfully be shifted out by chuck.Preferably, the annular region of cutter head end face forms the oblique angle especially, radially gives prominence to thereby be supported on.This radially gives prominence to can be around the chamber that wherein is provided with magnet.Magnet can be fixedly connected to a part that sandwiches part.This sandwiches part and has the polygonal cross-section shape.This sandwich part can be to rotate fixing but axially slidably mode be arranged in the insertion portion of chuck, its with axially slidably mode be installed on this.Sandwiching part can move axially between stopping at two, and one stops corresponding to what magnet contacted with cutter head end face face and sandwiches axial location partly.Another stops can be relevant by the disconnected position that the cutter head end face separates with magnet.
This dop is in the following manner: remain in the electric screwdriver chuck if sandwich part, move by the slip of control cover and chuck can be moved to hold ready position.Yet this is unnecessary in the preferable configuration of chuck, because ball can be removed backward when ball contacts with the cutter head back bevel angles.If cutter head is engaged in the container cavity, its plane chokes the base portion in chamber, and it forms by axially movable magnet.This keeps by magnet.Yet cutter head also keeps by ball.If cutter head will be shifted out by chuck, the control cover is removed by sandwiching part, and promptly the opening towards container cavity moves.Move with this and to link to each other, in being engaged in the electric screwdriver chuck sandwich partly on acted on pulling force.The effect that interrelates is, is fixedly connected on the magnet that sandwiches part and moves backward, and the bed knife that makes magnet act on the cutter head obviously reduces.At this POF of control cover, ball can radially be removed, and makes cutter head to shift out.
Another aspect of the present invention is to handle to simplify the problem that is shifted out cutter head by the chuck of general type equally.Propose for this reason, control assembly can be locked in it and be maintained fixed the position that element stops to work with respect to wherein cooperating the slip that sandwiches cover portion partly to move by sandwiching part.The result of this structure is that retaining element moves to beyond its active position, makes cutter head to pull out, and need not control assembly is remained on its off-position.This function is at following situation advantageous particularly, and the end that sandwiches part that promptly is positioned at cover props up magnet, and magnet props up the end face of cutter head at its clip position.Sandwiching partly partly to move to outside the cover makes magnet and cutter head separate.The end edge of cutter head is supported on the circlip that is arranged in the circumferential groove in the cover portion.The axially movable property that sandwiches part is a stop limits.This realizes by the split washer that is arranged in cover portion circumferential groove.It has formed to be positioned at and has sandwiched the radially outstanding of part circumferential groove.The axial width that sandwiches the part circumferential groove has been determined the latter's displacement stroke.Control assembly preferably is locked in the appropriate location by at least one stop member, and stop member is arranged in the wall otch of cover portion, and moves to stopping in the depression in the control assembly.Baffle element can be a ball, and stops that depression can be formed by cannelure.The diameter of baffle element is greater than the wall thickness of cover portion.Such result is that baffle element or the outstanding outer wall that surpasses cover portion are perhaps charged in the mantle cavity.If the outstanding cover outer wall that surpasses of baffle element, it can enter the depression that stops of control assembly, thereby holds it in the off-position.Baffle element is supported on the lateral surfaces part that sandwiches part in the case, and is supported in the rear portion by the latter.Inwardly slide along with sandwiching part, baffle element can move to and sandwich being displaced sideways in the groove in the part.Sandwiching part remains on this position by the control assembly that is remained on latched position by spring axial displacement does not take place.In this position, prevent that by control assembly cylindrical cavity wall the radially outside direction of baffle element from moving corresponding to the control assembly clip position.To move to the off-position by latched position be preferred along the direction that shifts out of cutter head for the cover that forms control assembly for it.It is against the power effect of the spring of support set portion.After the control cover moved to the off-position, the ball that forms baffle element can enter in the control cover and form the annular incision that stops depression.Subsequently, ball breaks away from the groove that is displaced sideways that sandwiches in the part, makes that sandwiching part can move.During this moved, the widthwise side portions that sandwiches part was positioned at wherein wall otch lower slider at ball, makes ball to move radially.In the case, ball has stopped that the control cover moves backward.As a result, cutter head can be easily by shifting out in the container cavity.If cutter head is engaged in the container cavity once more, the oblique angle on its end face acts on the radial projection of above-mentioned cover part.And this is with respect to the cover part correlation that sandwiches the part slip, until stopping that ball can move to its relevant being displaced sideways in the groove.Control cover is subsequently owing to the power of the spring of precharge pressure moves to its blocking position.
Description of drawings
Below, exemplary embodiment of the present invention is described with reference to the accompanying drawings, wherein:
Fig. 1 shows the partial longitudinal section of exemplary embodiment, has wherein removed the top of cutter head and the regional area that chuck sandwiches part;
Fig. 2 shows the cross section of Fig. 1 center line II-II;
Fig. 3 shows the cross section of Fig. 1 center line III-III;
Fig. 4 shows the corresponding diagram with Fig. 1, and wherein the control cover is activated;
Fig. 5 shows the diagram with corresponding second exemplary embodiment one of Fig. 1 of first exemplary embodiment;
Fig. 6 shows second exemplary embodiment shown in Fig. 5, and wherein magnet moves backward;
Fig. 7 shows another exemplary embodiment corresponding to Fig. 5;
Fig. 8 shows based on illustrated another exemplary embodiment corresponding to Fig. 6;
Fig. 9 shows the perspective view of another exemplary embodiment of the present invention;
Figure 10 shows the longitudinal section of passing exemplary embodiment shown in Fig. 9, and wherein the control cover is in blocking position;
Figure 11 shows the diagram corresponding to Figure 10, and wherein this cover moves to the off-position;
Figure 12 shows the diagram that continues Figure 11, wherein sandwiches the section axial displacement;
Figure 13 shows the diagram corresponding to Figure 10, and cutter head slips into, and wherein the control cover is in locked position; And
Figure 14 shows the diagram corresponding to Figure 10, and wherein cutter head slips into.
The specific embodiment
Chuck has insertion portion 3 and hexagon sandwiches part 15.This insertion portion 3 can be made of metal, and at one end has the container cavity 2 of the screwdriver plug-in unit 1 that is used for the cutter head form.At the other end, the clamping side 15 that its hexagonal part can be engaged in the electric screwdriver chuck is projected into outside the insertion portion.For the structure of this clamping side, can be with reference to the prior art of introducing in the specification.Sandwiching part 15 can be pressed in the chamber in the insertion portion 3.
As seen from Figure 2, container cavity 2 has hexagonal cross-section.Zone at container cavity 2 edges is provided with window.In this opening that forms by window, be provided with and form retaining element and diameter greater than the ball 4 of wall thickness, make ball 4 extend in the container cavity 2, thereby on the angle point of the interior angle kerve by being supported on edge of a knife polygon handle and cutter head is fixed.The outside in the chamber, the clamping side 10 that tilts by control cover 5 is worked ball 4.Reverse with the restoring force of compression helical spring 11, control cover 5 can be moved to by clip position shown in Figure 1 in the off-position shown in Figure 3, has compressed compression helical spring 11 in this process.For this reason, compression helical spring 11 is supported on the annular brace shoulder that is arranged in insertion portion 3 further groove.This supports shoulder and is formed by ring 14, and control cover 5 also is close to it and is supported in the clip position.
The rear end of spring has the extension, and it protrudes in the groove 12 in the insertion portion 3.In the zone of 2 jiaos of container cavities, this extension 6 protrudes in the container cavity 2, and has together formed pusher 8 with the non-angular part, shown in Figure 1 sandwiching in the part, and its only outstanding slightly base portion 7 that surpasses container cavity 2.Yet, also stipulated the not outstanding base portion 7 that surpasses of the pusher that in clip position, forms by spring end.
The base portion 7 of container cavity 2 is formed by cylindrical magnet 9.Between magnet 9 outer walls and container cavity 2 angle of polygon, form empty chamber.Spring end 6 is inducted in this sky chamber.
In unshowned modification of the present invention, pusher also can be by independently parts formation.Stipulated that also pusher is bonded on the rear end face of cutter head, be similar to center at container cavity 2.Pusher also can move along the direction relative with control cover 5.If release control element 4 control pushers must move towards clip position 15, for example, this can realize by means of returnconnecting rod mechanism.
This device is worked in such a way:
Therefore begun by clip position shown in Figure 1, wherein ball 4 is positioned at before the shoulder of cutter head 1, and cutter head can't be pulled to outside the container cavity 2, and control cover 5 moves along the direction shown in the arrow L, and spring 11 obtains compression.During this slip of control cover 5 is moved, thereby obtaining the space, ball 4 outwards moves on to the next door rapidly, make the fixedly action of ball 4 eliminate.In principle, after this initial displacement of control cover 5, cutter head can be shifted onto outside the container cavity 2.
Control cover 5 causes the end of the pusher 8 that formed by spring end to act on the end face of cutter head 1 along being moved further of direction L.Action combines therewith, and cutter head 1 also drags along the direction of the effect displacement L that controls cover 5.The base portion 7 that the end of cutter head 1 becomes by container cavity 2 breaks away from.Form the gap between magnet 8 and the cutter head 1.Cutter head 1 moves to position shown in Figure 3, or in the unshowned variant of the present invention, moves to fully outside the container cavity 2.
With different by the situation of the known clamp gripper of DE 199 23 006, move and the control that cutter head 1 is outside overlap 5 mobile relevant.In theme of the present invention, need not to prop up lastingly the end-acted spring that withdraws from of cutter head 1.
In the exemplary embodiment shown in Fig. 5 and 6, the chuck components identical by with first exemplary embodiment in identical Reference numeral represent.
Cutter head 1 is engaged in the container cavity 2 in the insertion portion 3, and its integral body forms the polygon cover.The ball 4 that works by the spring along container cavity 2 opening directions is engaged in the groove in the wall.This ball works by the radially inside direction of mode of control cover 5 clamping sides 10.A part 15 ' that sandwiches part 15 is engaged in the rear portion of insertion portion 3.Sandwich part 15 and form hexagon, and be used for to rely on its free end to be engaged in the chuck of electric screwdriver.A part 15 ' that sandwiches part 15 with rotate fixing and axially slidably mode be engaged in the insertion portion 3.Magnet 9 is arranged before the head of part 15.Magnet 9 is fixedly connected on part 15.Sandwiching part 15 axial mobilitys is stop limits.This sandwiches part 15 assembling back punching out or rolling outstanding 17 realizing of forming by relying on.This gives prominence to 17 and is engaged in part 15 ' the middle circumferential notch 16.
The annular oblique angle 19 that centers on the annular surface 1 ' of cutter head is supported on radially to be given prominence on 20.This radially gives prominence to 20 and has kept central opening, and magnet 9 is arranged in this opening.In use location shown in Figure 5,7 planes, surface of magnet 9 choke end face 1 '.If act on axial force sandwiching on the part 15, this power directly is passed on the end face 1 ' of cutter head 1 through magnet 9.On the other hand, if sandwiching the pulling force that acts on the part 15 greater than the bed knife of magnet 9 on cutter head 1 end face 1 ', then magnet 9 is removed by the end face 1 ' of cutter head 1.The result that magnet 9 is removed by cutter head 1 is that the bed knife that is acted on the cutter head 1 by magnet 9 obviously reduces, and makes cutter head 1 can haul out container cavity 2 (see figure 6)s when the control cover moves to the off-position.
Can be by moving control cover 5 towards the opening of container cavity 2 when being clamped in the chuck of electric screwdriver etc. and apply pulling force sandwiching part 15.When this moves, it can radially outwards be removed thereby discharge ball 4.
From its functional perspective, the exemplary embodiments basic and Fig. 5 and 6 of the exemplary embodiment shown in Fig. 7 and 8 are corresponding.The relevant factor of this embodiment with insertion portion 3 in sandwich part 15 in the polygon chamber stop limits fix.Hexagon sandwiches part 15 and has interior angle kerve, wherein is provided with around the split washer 23 that sandwiches part 15.This split washer is arranged in the insertion portion 3 in annular incision 25.Annular incision 25 in the insertion portion 3 partly forms by the cover shape that is engaged on insertion portion 3 ends.For this reason, the end of insertion portion 3 forms ring-shaped step part 24.The wall portion 22 of cover end 21 expansion diameters has been engaged on this ring-shaped step part 24, and it firmly fixes on the throne there.
In the exemplary embodiment shown in Fig. 9 to 14, control cover 5 forms two parts.The inside 5 of directly sliding along cover portion 21 has circumferential groove, and it is broad vertically.The second cover portion 5 that is made of plastics " can be rotatably set in this circumferential groove.Chuck can also be fixed on this second cover portion 5 during the rotary manipulation " on.Cover 5 " can in holding its groove, rotate with having by oneself.
Cutter head shown in Figure 10 to 12 has groove 29.In latched position shown in Figure 10, fixedly ball 4 protrudes into container cavity 2 and is applied to it in the rearward recess side regions, makes cutter head can't haul out container cavity 2.The end face oblique angle of cutter head props up and is arranged in the circlip 20 that container cavity 2 Internal locking grooves are provided with.Ball 4 works by the clamping side 10 of cover portion 5.Cover 5 relies on spring 11 to be fixed in latched position shown in Figure 10.On this latched position, the rear end face of cutter head 1 chokes the end face 7 that sandwiches part 15.End face 7 is formed by magnet 9, and magnet 9 is arranged in the hole 30 that sandwiches in part 15 ends.
In rear region, cover portion 21 has along diameter two wall otch 31 positioned opposite to each other.The diameter of rounded substantially wall otch 31 is little greater than the diameter that is arranged on the locking ball 27 in the wall otch 31.The diameter of locking ball 27 is greater than the wall thickness of cover portion 21, makes locking ball 27 or part charge in the chamber in the cover portion 21 the perhaps outstanding outer wall that surpasses cover portion 21.In blocking position shown in Figure 10, locking ball 27 is charged in the chamber of cover portion 21.A part that sandwiches part 15 is engaged in this chamber in axially movable mode.Thus, sandwich part 15 and have two along the relative lateral concave 28 of diameter.These depressions can be formed by circumferential groove.
As shown in figure 11, move spring 11 pressurizeds relative to cover portion 21 as if the direction that shifts out along cutter head 1.In shift position shown in Figure 11, inner groove 26 is arranged on and the position of wall otch 31 to it.Two along the relative locking ball 27 of diameter can radially outwards move away to thus be displaced sideways the depression or circumferential groove 28 beyond.And in locked position shown in Figure 10, the mobility that sandwiches part 15 is obstructed, and this mobility is fine in off-position shown in Figure 11.
In operating position shown in Figure 12, sandwich part 15 and move with respect to cover portion 21.In this position, the lateral surfaces that sandwiches part 15 makes ball can't move to beyond control cover 5 annular incision 26 partly for locking ball 27 provides support in the cover inboard.In this operating position, the control cover remains on its off-position.
The displacement stroke that sandwiches part has circlip 17 restriction in the inside groove that is arranged in the cover portion 21, and is arranged so that it radially inwardly protrudes into and sandwiches in the part 15 in annular incision 16.The axial width of otch 16 defines the axial displacement stroke that sandwiches part 15.
In position shown in Figure 12, fixedly ball 4 can radially outwards be removed, and makes cutter head to shift out.
Along opposite order new cutter head is coupled in the chuck.By example, in operating position shown in Figure 12, cutter head can insert in its container cavity 2, and the oblique angle on its end face or end face contacts with circlip.Perhaps, perhaps, sandwich part 15 and can shift out position shown in Figure 12 and move into the position shown in Figure 10 or 11 by mechanical force by the magnetic force of the magnet 9 that works this moment.In the position shown in Figure 10 or 11, locking ball 27 can radially inwardly move away in lateral concave 28 or the circumferential groove, makes control cover 5 discharge and makes it can move to locked position (Figure 10).This displacement is owing to the power of compression spring 11 takes place.
Yet, cutter head can also be engaged in the container cavity 2 and the control cover is in locked position (Figure 13).Fixedly ball 4 with vertically movably mode be arranged in the window in the jacket wall.Cutter head can move along direction of insertion against the power of spring 32.When cutter head end-acted was on fixing ball 4, fixedly ball 4 can move along the direction of insertion of cutter head, compresses spring 32 simultaneously.It is subsequently along stopping that side 10 slides, and can radially outwards move, and moves the lateral surfaces that exceeds cutter head until it.Cutter head can be engaged in the container cavity 2 subsequently fully, reaches blocking position (seeing Figure 13) until it.In this position, fixedly ball 4 prevents that cutter head is drawn out, even fixedly ball is not arranged in the interior angle kerve.
Control cover 5 micro-displacements along the off-position have increased the stroke that moves radially of fixing ball 4 slightly.Fixedly ball 4 moves to by spring 32 in the end regions of window, makes fixing ball 4 can enter in the interior angle kerve of cutter head (seeing Figure 14).In this position, clamping side 10 radially acts on fixedly on the ball 4.Locking ball 27 is arranged on and sandwiches in the part 15 in the lateral concave 28, makes that sandwiching part 15 remains in the cover portion 21 vertically.
Disclosed all be characterized as relevant with the present invention (intrinsic).Its integral body of disclosure of relevant/additional priority documents (at the copy of first to file) is incorporated herein in the disclosing of the application, partly is for the feature of these documents is introduced the application.

Claims (6)

1. chuck that is used to hold instrument (1), instrument (1) can be by using around its rotation, this chuck has insertion portion (3), insertion portion (3) has the non-circular container cavity of cross section (2), in container cavity (2), instrument (1) can rely on the retaining element (4) that is associated with the chamber wall fixing and prevent to be drawn out container cavity (2), retaining element (4) can move by the slip of control assembly and lose efficacy, instrument (1) is supported on the rear portion of container cavity (2), and have be matched with in the cover portion (21) sandwich the part (15), it is characterized in that control assembly (5) can be locked in it and be maintained fixed element (4) owing to sandwich the activity mobile and inoperative position of part (15) with respect to cover portion (21).
2. chuck according to claim 1 is characterized in that control assembly (5) can rely at least one baffle element (27) locking, baffle element (27) to be arranged in the wall otch (31) and move to towards control assembly (5) to stop in the depression (26).
3. chuck according to claim 1 and 2 is characterized in that baffle element (27) is a ball, and stops that depression (26) is cannelure.
4. chuck according to claim 1 and 2, it is characterized in that sandwiching part (15) when sliding in the cover portion (21), baffle element (27) part is arranged at and sandwiches being displaced sideways in the depression (28) in the part (15), and sandwiching part when (15) pulling out, baffle element (27) partly is supported on the rear end by the lateral surfaces that sandwiches part (15).
5. chuck according to claim 1 is characterized in that described instrument is the screwdriver plug-in unit.
6. chuck according to claim 1 is characterized in that, described control assembly is the control cover.
CNB038134896A 2002-06-10 2003-05-12 Chuck for receiving tools operated by rotating around the axis thereof Expired - Fee Related CN100391697C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10225505 2002-06-10
DE10225505.9 2002-06-10
DE10254339.9 2002-11-21

Publications (2)

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CN1703304A CN1703304A (en) 2005-11-30
CN100391697C true CN100391697C (en) 2008-06-04

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CN (1) CN100391697C (en)
DE (1) DE10254339B4 (en)
DK (1) DK1513653T3 (en)
ES (1) ES2392041T3 (en)
HK (1) HK1084916A1 (en)

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DE4207337C1 (en) * 1992-03-07 1993-06-09 Helfer & Co Kg, 3260 Rinteln, De
US5398946A (en) * 1993-12-29 1995-03-21 Poly-Tech Industries Chuck having one-step lock and release
EP0685300A1 (en) * 1994-05-02 1995-12-06 Matthew B. Jore Reversible drill driver tool
DE19923006A1 (en) * 1998-12-19 2000-06-29 Holland Letz Felo Werkzeug Chuck for interchangeable tool inserts
CN1349447A (en) * 1999-05-03 2002-05-15 麦克斯泰克制造公司 Quick-connect machanism
DE19932369A1 (en) * 1999-07-13 2001-01-18 Werner Hermann Wera Werke Chuck for screw driver inserts includes clamping bodies set axially off-set relative to each other with front and rear clamping bodies sitting on different shaped corners of inserts for multi-purpose design
US6199872B1 (en) * 1999-08-13 2001-03-13 Maxtech Consumer Products, L.L.C. Quick-release mechanism for screwdriver bits and the like
US20010043841A1 (en) * 1999-11-15 2001-11-22 Wienhold James L. Locking quick-change chuck assembly

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CN1703304A (en) 2005-11-30
HK1084916A1 (en) 2006-08-11
DK1513653T3 (en) 2013-01-14
DE10254339A1 (en) 2003-12-18
DE10254339B4 (en) 2019-10-10
ES2392041T3 (en) 2012-12-04

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