CN1947952A

CN1947952A - Die grinder with rotatable head

Info

Publication number: CN1947952A
Application number: CN 200610131814
Authority: CN
Inventors: 小林重树
Original assignee: SP Air KK
Current assignee: SP Air KK
Priority date: 2005-10-14
Filing date: 2006-10-12
Publication date: 2007-04-18

Abstract

A die grinder including a body having a longitudinal axis, and a grinding head portion with an output shaft capable of powered rotation. A motor is disposed in the body for rotating the output member. A locking interconnect portion attaches the grinding head portion to the body and is adapted to permit selective rotation of the grinding head portion relative to the body about the longitudinal axis of the body. Thus, the grinding head can be positioned at different selected angles relative to the body.

Description

Die grinder with rotary head

Technical field

Relate generally to spanner of the present invention, and relate more specifically to have the ratchet tool of rotary head.

Background technology

Power ratchet for example air ratchet make have be used to rotate securing member for example the output of the socket of bolt or nut rotate.These ratchets can be used for auto repair and commercial Application.Air ratchet has cylindrical shell, and this cylindrical shell is designed to be held in the hand by the user, makes user's finger engage with the frizzen that is fastened on the lower part of frame place pivotally.Like this, the user can be easily by operating ratchet (promptly pressing down frizzen) with finger extruding frizzen.

Frizzen usually and output be positioned at the same side of ratchet.Therefore, so that the socket of output and nut or bolted joints, wrist or arm or whole health that the user must adjust her come suitably ratchet tool to be positioned to and bolt or nut engages in order to handle ratchet.But, in some cases, for example when the user attempts to tighten the nut that is difficult to get at and/or part is hindered by other parts or structure or bolt, wrist or arm or the health that may not exist enough spaces or leeway to regulate her make nut or bolt engage with ratchet.Therefore, the user must change his or she grip to instrument, for example inadequately her palm replacement is pointed to be placed on the plate handle.But, change grip like this and can make that more being difficult to promptly control ratchet pushes frizzen again.

Summary of the invention

In one aspect, ratchet tool generally includes housing with longitudinal axis and the head that comprises ratchet mechanism, and this ratchet mechanism has the output that can be driven rotation.The motor that is arranged in this housing is operably connected to this ratchet mechanism so that this output rotates.Be used for being suitable for allowing this head to rotate the connector that this head is connected to this housing with respect to the longitudinal axis of this housing around this housing.

On the other hand, die grinder comprises housing with longitudinal axis and the head that comprises ratchet mechanism, and this ratchet mechanism has the output that can be driven rotation.The motor that is arranged in this housing is operably connected to this ratchet mechanism so that this output rotates.Air inlet is suitable for connecting to provide power to air motor with pressurized air source.Be used for being suitable for allowing this head to rotate the connector that this head is connected to this housing with respect to the longitudinal axis of this housing around this housing.

Other purpose and feature can part find out significantly that part is pointed out hereinafter.

Description of drawings

Fig. 1 has the perspective view of ratchet tool that is in the head of primary importance with respect to housing;

Fig. 2 is the perspective view on top of the ratchet tool of Fig. 1 of cutting open of part, and the head that is in latched position with respect to housing is shown;

Fig. 3 is the view that is similar to Fig. 2, and it illustrates the head that is in the off-position with respect to housing;

Fig. 4 is the decomposition diagram of the ratchet tool of Fig. 1;

Fig. 5 illustrates the perspective view that turns to the ratchet tool of the second place with respect to housing;

Fig. 6 is the perspective view of the ratchet tool of another embodiment;

Fig. 7 is the decomposition diagram of the ratchet tool of Fig. 6;

Fig. 8 is the perspective view of top part of the ratchet tool of part Fig. 6 of cutting and removing housing open, and it illustrates the head that is in latched position;

Fig. 9 is the enlarged partial view of the locking mechanism shown in Fig. 8;

Fig. 9 A is the profile of the sleeve pipe of ratchet tool;

Figure 10 is the view that is similar to Fig. 8, but it illustrates the head that is in the off-position; And

Figure 11 illustrates the perspective view of ratchet tool that turns to the head of the second place with respect to housing.

Corresponding in the accompanying drawings label indication corresponding components.

The specific embodiment

Below, with reference to accompanying drawing and especially with reference to Fig. 1, use label 10 to indicate generally according to the pneumatic actuation ratchet tool of instruction structure of the present invention.Ratchet tool 10 comprises the elongated shape housing 12 with longitudinal axis A1.The head 14 of instrument 10 extends vertically from an end of housing 12, and air inlet 16 extends to be connected to the pressurized air source (not shown) from the opposite end.Should be understood that when the relative position of each parts that relates to instrument and moving direction, hypothesis for convenience and without limitation, instrument is orientated in vertical plane, thus head 14 is positioned at housing 12 tops.Be used to control that forced air is introduced the plate handle 19 of housing 12 is adjacent with air inlet 16.Air drives the output 21 of air motor (not shown) to be used for driven tool 10 in housing 12.Should be understood that and to use for example motor of other motor within the scope of the invention.

With reference to Fig. 2, in one example, air motor is connected to the transmission device that comprises axle 24, this axle has eccentric wheel 25, this eccentric wheel makes air motor be operably connected to generally the ratchet mechanisms that indicate by 26, so that the rotational motion of the axle that will be caused by air motor converts the swing of ratchet mechanism to.The bearing 28 of insertion instrument 10 allows axle 24 to rotate in this instrument.The swing component 41 of ratchet mechanism 26 is between the arm 45A and 45B of the yoke 47 of head 14.Swing component 41 usually with arm 45A, the 45B of yoke 47 in register with the parts (some parts are not shown) of admittance ratchet mechanism 26.The parts of ratchet tool 10 also especially are formed from steel by metal, but can imagine these parts can be made of other materials such as plastics.

When operation, the rotation of the eccentric wheel 25 of axle 24 oscillates swing component 41, and this rotates output 21 along clockwise direction.Rotate a half-turn (promptly rotating 180 °) afterwards at axle 24, swing component 41 counter-rotatings also rotate counterclockwise.Swing component 41 breaks away from output 21, can mobile output 21 thereby the permission swing component moves.In case axle 24 rotates another half-turn, then swing component 41 engages with output 21 again so that output 21 further rotates along clockwise direction.This process repeats up to disengaging plate handle 19.Ratchet tool 10 also comprises the reversing switch (not shown) of the rotation direction reversed that is used to make output 21.The class of operation that being used to of instrument 10 rotated output 21 in the counterclockwise direction is similar to the operation that output is rotated along clockwise direction of being used to of this instrument.

Ratchet mechanism 26 in the embodiment shown and operation thereof are used always substantially.Should be understood that under the situation that does not deviate from scope of the present invention, be used to make the structure of the ratchet tool 10 that output 21 rotates, the structure of ratchet mechanism 26 more specifically can be different with illustrated embodiment.For example, ratchet mechanism can be similar to U.S. Patent No. 6578643 and the disclosed mechanism of No.6860174, these two patents at this in conjunction with for referencial use.In other words, the ratchet mechanism of other type all within the scope of the invention.

Below with reference to Fig. 1 to 5, the longitudinal axis A1 that the head 14 of ratchet tool 10 can center on this housing with respect to the housing 12 of instrument rotates 360 °.For example, as shown in Figure 1, head 14 can be in a direction with respect to housing 12, perhaps as shown in Figure 5, can turn to another direction with respect to housing.Therefore, optionally change the position of output 21 with respect to plate handle 19.Any one that head 14 is locked in four positions releasedly by 50 locking mechanisms that indicate sentenced and prevented that head from further rotating generally, unties this locking mechanism to allow this head rotation once more up to the user.Without departing from the scope of the invention, the quantity of selected position can be different with above-mentioned quantity.This mechanism prevents that head 14 from further rotating when user's operation tool 10.Therefore, instrument 10 of the present invention is more general than traditional air ratchet spanner, this be because the user needn't change his or she grip on housing 12 change output 21 towards.Therefore, the user is handling this instrument needn't avoid correct grasping tool mode when securing member engages with " being difficult to get at ".

Below with reference to Fig. 4, connector 52 makes rotating head 14 engage with housing 12.Connector 52 comprises annular shoulder 54, and this shoulder 54 has the inward flange of outward flange and Qi Nei limiting hole 56.The socket that tubular skirt 58 is adjacent to stretch out and admits and be connected the part of housing 12 to be defined for from the shoulder 54 and the outward flange of this shoulder.Tubular body 60 is connected to this shoulder on a side relative with skirt 58 of annular shoulder 54, and is adjacent to stretch out from shoulder and this inward flange.Tubular body 60 has four recesses 62 (only illustrating three in the accompanying drawing) that are evenly spaced apart around its circumference.Threaded lid 64 cooperates so that connector 52 is remained on this housing with screw thread 66 on the housing 12.

As shown in Figure 4, head 14 comprises the collar 68 and from the outward extending tubular sections 70 of this collar.The collar 68 comprises the aperture 72 that is used to admit screw 74.Tubular sections 70 has two opening opposing 76.Tubular sections 70 is admitted the tubular body 60 of connector 52.The inside of tubular sections 70, annular shoulder 78 (Fig. 2 and 3) is as block, this block locate this tubular body 60 in connector is received within this tubular sections the time in case two recesses 62 in this tubular body longitudinally with this tubular sections in two openings 76 aim at (Fig. 2).Ball 80 (briefly, brake component) is positioned at each opening 76 of tubular sections 70, and extends through the opening 76 in this tubular sections and extend to recess 62 in the less tubular body 60.

Locking mechanism 50 comprises the sleeve pipe 82 (briefly, locking piece) that can extend around the tubular sections 70 of head 14, and this sleeve pipe comprises the interior spine 84 (briefly, inner keeper) that each end with this sleeve pipe inwardly separates.This spine 84 is placed on the sleeve pipe 82 keeping each ball 80, and the size of spine 84 and position are arranged to make like this ball 76 radially inwardly outstanding and charge into recess 62 from the hole.Sleeve pipe 82 optionally moves to the off-position from latched position, in latched position, the spine 84 of sleeve pipe engages with ball 80 and ball is fixed in the recess 62, thereby prevents that head 14 from rotating (Fig. 2) with respect to housing 12, in the off-position, spine and ball spaced apart (Fig. 3).For sleeve pipe 82 is moved to the off-position, sleeve pipe moves up and away from this housing vertically along the longitudinal axis Al of housing 12.Screw 74 is as preventing that sleeve pipe 82 from moving block far away.In the off-position, head 14 can rotate with respect to housing 12.When head 14 rotated, ball 80 was released recess 62 by the tubular sections 70 of head 14 and is centered on the circumferential promotion of the little tubular body 60 of connector 52.Sleeve pipe 82 continues ball 80 is remained in the opening 76.In case head 14 moves to desired location, sleeve pipe 82 is got back to latched position to lower slider, makes the spine 84 of sleeve pipe ball 80 is fixed in the recess 62 of less tubular body 60 of opening 76 in the tubular sections 70 and connector 52, thereby prevents head rotation.Each recess 62 in the less tubular body 60 is corresponding to head 14 rotating positions wherein.In the embodiment shown, head 14 can be turned to four different positions.Spring 86 is to latched position biased sleeve 82.Can use other the locking and the method for release head 14 within the scope of the invention.

Can be clear that from above-mentioned explanation, comprise that the head 14 of output 21 can optionally be moved to each position.Shown in the configuration, output 21 can move between four diverse locations, about 90 ° of this space, four positions.Each position of output 21 is corresponding to one of recess 62 of the less tubular body 60 of connector 52.However, it should be understood that output 21 can have more or less recess by the recess 62 that adds or remove less tubular body 60.For example, if less tubular body has eight openings, then output can move between eight diverse locations.On the other hand, if less tubular body only has two openings, then output only can move between two diverse locations.

When the head 14 of instrument 10 rotated, whole driving mechanism (being the axle and the movable part of air motor) rotated in housing 12.However, it should be understood that driving mechanism can comprise the connector of the amount of spin (for example, preventing that when head rotates air motor from rotating) that limits in this driving mechanism.

With reference to Fig. 6-10, another embodiment of pneumatic actuation ratchet tool indicates with label 110 generally.Ratchet tool 110 is generally the type in the U.S. Patent No. 6578643, and this patent has been incorporated into this with for referencial use.Except the type of ratchet, the main difference of this embodiment and previous embodiment also is generally the operation with 150 locking mechanisms that indicate.More specifically, the operation of locking mechanism 150 is opposite, thus downwards rather than the sleeve pipe 182 that moves up allow head 110 to rotate.

With reference to figure 7, ratchet tool 110 comprises the elongated shape housing 112 with longitudinal axis A101.The head 114 of instrument 110 extends vertically for elongated shape and from an end of housing 112.Air inlet 116 extends to be connected to the pressurized air source (not shown) from the opposite end.Air motor (not shown) in the housing 112 are connected to transmission device, and this transmission device comprises three track gear (not shown) of the bolt 113 that is connected to three correspondences of extending vertically from an end that is positioned at head 114 of axle 124.The rotating band moving axis 124 of track gear rotates.Extend and be received within the opening of rocking bar (not shown) from the other end of axle with the eccentric wheel 25 similar eccentric wheel (not shown) of previous embodiment.A pair of ratchet (not shown) engages from this rocking bar extension and with the ratchet that comprises output 121.The rotation of axle 124 moves around rocking bar, thereby makes the ratchet swing, and ratchet and output 121 are rotated.

The head 114 of ratchet tool 110 can rotate 360 ° around the longitudinal axis A101 of this housing with respect to tool housing 112.Therefore, optionally change the position of output 121 with respect to plate handle 119.Locking mechanism 150 is locked in select location with head 114 and further rotates to prevent head, discharges head to allow head rotation once more up to the user.When the user operated ratchet tool 110, locking mechanism 150 prevented that head 114 from further rotating.

With reference to Fig. 7, totally rotating head 114 is engaged with housing 112 by 152 connectors that indicate.Connector 152 comprises first tubular body 158, and this first tubular body has outside and interior periphery, and the screw thread 159 that is connected to the threaded portion 166 of housing 112 along its inner circumference being used to of forming.Less second tubular body 160 of connector 152 stretches out vertically from bigger tubular body 158.The neighboring of bigger tubular body 158 comprises outward flange 158B in the intersection with less tubular body 160.Less tubular body 160 has a pair of opening opposing 162 (opening only is shown in the accompanying drawing).Ball 180 (briefly, brake component) is received within each opening 162.

With reference to Fig. 7,8 and 10, the lower tubular part 168 of the bottom part that centers on axle 124 of the head 114 of instrument 110 limits a circumferential raceway groove 175, has evenly isolated four recesses 176 (two recesses only are shown in the accompanying drawing) in this raceway groove.Should be understood that the anticipated number according to the chosen position of head 114, head 114 can have greater or less than four recesses 176.With reference to Fig. 8 and 9, the size of connector 152 and shape set are the lower tubular part 168 of receivability head 114, make in the connector each opening 162 can with head be used to admit the selected recess 176 of ball 180 to aim at, to prevent that head is with respect to housing 112 rotations (ball only is shown among the figure).The threaded ring 164 (Fig. 6 and 7) that is fixed on the threaded portion 166 of housing 112 contacts correctly longitudinally to settle this connector with the lower limb of connector 152, makes opening 162 and recess 176 aim at.In the time of in head 114 is received within connector 152, bolt 113 connects with each track gear.

Locking mechanism 150 comprise around connector 152 extend generally with the sleeve pipes (briefly, locking piece) of 182 signs.Sleeve pipe 182 comprises the inner annular spine 184 (briefly, keeper) between the end that is arranged on this sleeve pipe.This spine 184 is placed on the sleeve pipe 182, and its size forms and makes each ball 180 be fixed in the recess 176 of the opening 162 of connector 152 of corresponding aligning and head 114.Sleeve pipe 182 optionally moves to the off-position from latched position, in latched position, the spine 184 of sleeve pipe engages with ball 180 and ball is fixed in corresponding opening 162 and the recess 176, thereby prevent that head 114 from rotating (Fig. 8 and 9) with respect to housing 112, in the off-position, spine and ball break away from (Figure 10) and allow ball to shift out this recess.Spring 186 is to latched position biased sleeve 182.Spring 186 extends between threaded ring 164 and annular ridge 184 and engages.

For sleeve pipe 182 is moved to the off-position, sleeve pipe slides vertically from position shown in Figure 8 to the longitudinal axis A101 of housing along housing 112, makes that annular ridge 184 is positioned at ball 180 belows as shown in figure 10.The size of the bottom part 182A of sleeve pipe 182 and shape form the feasible so threaded ring 164 (Fig. 9 A and 10) of slidably crossing.The inner annular shoulder 183 that is arranged on bottom part 182A top contacts vertically moving with limiting boot with ring 164.In the off-position, head 114 can rotate with respect to housing 112.When head 114 rotated, each ball 180 was pushed out corresponding concave part 176 and is centered around lower tubular part 168 circumferentially mobile of the head 114 opening 162 in raceway groove 175.When sleeve pipe was unlocked, the top part 182B (Fig. 9 A and 10) that is positioned at annular ridge 184 tops of sleeve pipe 182 was arranged on ball 180 tops.Top part 182B prevents that ball 180 from dropping out from the opening 162 of connector 152, and simultaneously, allows ball to leave recess 176.

In case head 114 moves to desired location, and ball 180 is received within the corresponding concave part 176, sleeve pipe 182 is for example moved back to latched position by spring 186, makes the spine 184 of sleeve pipe contact with ball 180, and ball is fixed in corresponding opening 162 and the recess 176 to prevent head rotation.With reference to Fig. 9 and 9A, the upper surface 184A of spine 184 tilts towards the top part 182B of sleeve pipe 182, little by little ball 180 is pushed corresponding concave part 176 when sleeve pipe is pushed upwardly.Be clearly shown that as Fig. 9 in the time of in ball 180 is received within corresponding concave part 176, the exterior section of each ball extends radially outward from the opening 162 of connector 152.Annular stop part 185 (Fig. 9 and 9A) is radially inwardly given prominence to and is contacted with the exterior section of ball 180 from the spine 184 of sleeve pipe 182, is positioned at the top of ball and prevents that spring 186 from making sleeve pipe skid off connector 152 to keep spine.

Each recess 176 of head 114 is corresponding to the rotating position of head wherein.In the embodiment shown, head 114 can be turned to four diverse locations.Can use the method for other locking and release head 114 within the scope of the invention.When the head 14 of instrument 10 rotated, whole driving mechanism (i.e. axle and air motor) rotated.However, it should be understood that driving mechanism can comprise the connector of the amount of spin (for example, preventing that when head rotates air motor from rotating) in the restriction driving mechanism.

When introducing the element of the present invention or its preferred embodiment, article " ", " one ", " being somebody's turn to do " and " described " all are meant and have one or more these elements.Term " comprises ", " comprising " and " having " will comprise, and is meant also has other element except listed element.

In view of above, as seen can realize targets more of the present invention and obtain other favourable result.

Owing to can carry out many modifications to mentioned above without departing from the scope of the invention, so that all the elements shown in that comprise in the above-mentioned explanation and the accompanying drawing all are interpreted as is illustrative and nonrestrictive.

Claims

1. ratchet tool, this instrument comprises:

Housing with longitudinal axis;

The head that comprises ratchet mechanism, this ratchet mechanism has the output that can be driven rotation;

Be arranged in the described housing and be operably connected to described ratchet mechanism so that the motor that described output is rotated; And

Be used for described head is connected to the connector of described housing, this connector is suitable for allowing described head to rotate with respect to the longitudinal axis of described housing around described housing.

2. ratchet tool according to claim 1 is characterized in that described ratchet tool also comprises a locking mechanism, and this locking mechanism can be locked in described head the selected position, angle around the described housing longitudinal axis releasedly.

3. ratchet tool according to claim 2 is characterized in that described locking mechanism is suitable for quick release.

4. ratchet tool according to claim 3, it is characterized in that, described locking mechanism can slide between latched position and off-position generally along the longitudinal axis of described housing usually, in latched position, described head is held to prevent with respect to described housing rotation, in the off-position, described head can rotate with respect to described housing.

5. ratchet tool according to claim 4 is characterized in that, described locking mechanism is elastically biased toward to latched position.

6. ratchet tool according to claim 4 is characterized in that described locking mechanism comprises a brake component, and this brake component can be in the engagement of latched position and described instrument to be locked in selected position, angle with respect to described housing with described head.

7. ratchet tool according to claim 6, it is characterized in that, described locking mechanism also comprises the locking piece that can move between latched position and off-position, in latched position, this locking piece keeps described brake component and described engagement, in the off-position, this locking piece allows the head of described brake component and described instrument to break away from.

8. ratchet tool according to claim 7 is characterized in that described head comprises the recess that is used to admit described brake component, and described connector comprises the opening that is used to admit described brake component.

9. ratchet tool according to claim 8 is characterized in that, described brake component comprises the ball in the opening that is received in described connector loosely.

10. ratchet tool according to claim 9 is characterized in that, described locking piece comprises that this sleeve pipe can vertically move with respect to described housing around the sleeve pipe of at least a portion of described connector between latched position and off-position.

11. ratchet tool according to claim 10 is characterized in that, described sleeve pipe comprises and is used for the inside keeper that keeps described ball to engage with the recess of described housing in latched position.

12. ratchet tool according to claim 11 is characterized in that, described locking mechanism also comprises the spring that is used at the described sleeve pipe of latched position bias voltage.

13. ratchet tool according to claim 11 is characterized in that, described sleeve pipe can move to the off-position of described instrument to the head of described instrument, and can move to the latched position of described instrument to the housing of described instrument.

14. ratchet tool according to claim 11 is characterized in that, described sleeve pipe can move to the off-position of described instrument to the housing of described instrument, and can move to the latched position of described instrument to the head of described instrument.

15. ratchet tool according to claim 1, it is characterized in that, described instrument is the air ratchet spanner, and described motor comprises air motor, and this spanner also comprises the actuating unit that extends to described ratchet mechanism by described connector from this air motor.

16. ratchet tool according to claim 8 is characterized in that, at least four recesses that described head comprises along the circumferential that distribute equidistantly of described head and is used for engaging with described brake component.

17. a die grinder, this instrument comprises:

Housing with longitudinal axis;

Be arranged in the described housing and be operably connected to described ratchet mechanism so that the air motor that described output is rotated;

Be used for connecting so that the air inlet of power is provided for described air motor with pressurized air source; And

18. die grinder according to claim 17 is characterized in that, described die grinder also comprises a locking mechanism, and this locking mechanism can be locked in described head the selected position, angle around the described housing longitudinal axis releasedly.

19. die grinder according to claim 18 is characterized in that, described locking mechanism is suitable for quick release.

20. die grinder according to claim 19, it is characterized in that, described locking mechanism can slide between latched position and off-position generally along the longitudinal axis of described housing, in latched position, described head is held to prevent with respect to described housing rotation, in the off-position, described head can rotate with respect to described housing.