CN101568409B

CN101568409B - hand tool machine

Info

Publication number: CN101568409B
Application number: CN2007800484065A
Authority: CN
Inventors: D·绍尔; T·赫尔
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2006-12-27
Filing date: 2007-10-30
Publication date: 2012-10-03
Anticipated expiration: 2027-10-30
Also published as: RU2009128740A; WO2008080658A1; RU2456151C2; EP2104594A1; DE102006061624A1; CN101568409A; EP2104594B1

Abstract

The present invention relates to a handheld power tool, in particular a hammer drill, having a switching device (12), the switching device having an axially movable intermediate shaft (14) and a gear unit (16) arranged on the intermediate shaft (14), and the switching device is designed to switch between different drive modes and/or drive speeds of the tool. The present invention proposes that the intermediate shaft (14) and the gear unit (16) are movable relative to each other in the axial direction (18, 19).

Description

Hand held power machine

Technical field

The present invention relates to a kind of hand held power machine as described in the preamble by claim 1.

Background technology

Known have such hand held power machine, especially a hammer drill, its have have one can axially movable jackshaft and be arranged on the gear unit on this jackshaft conversion equipment.At this, gear unit can move axially with jackshaft usually.Conversion equipment is designed between the different driving mode of instrument and/or actuating speed and changes.

Advantage of the present invention

The present invention relates to a kind of hand held power machine; Especially hammer drill; Has a conversion equipment; This conversion equipment has one can be arranged on the gear unit on this jackshaft by axially movable jackshaft and, and this conversion equipment is designed between the different driving mode of instrument and/or actuating speed and changes.

The present invention proposes, and jackshaft and gear unit can move vertically relative to each other, can realize conversion equipment compact, that have switching mechanism simple in structure thus.For between gear unit and jackshaft, producing relative motion vertically; Can carrier wheel unit and/or especially advantageously removable jackshaft at this; Feasible operator as far as conversion equipment or hand held power machine is because the little inertia of quality to be moved can be realized moving especially easily.Gear unit is advantageously vertically with respect to the housing of hand held power machine and/or with respect to a slave unit---especially a hammer is managed---, and fixed-site ground is provided with.In this article " axially " be interpreted as such direction, it preferably extends along the principal spread direction of jackshaft, especially extends along the length of jackshaft.

Propose in addition, gear unit has at least two gears that can rotate with being independent of each other, can advantageously realize being used for the different velocities of rotation of the slave unit of a rotation thus, and this slave unit is used to produce the working motion of the rotation of cutter.The gear of gear unit preferably is provided with different working diameter or different gearratios.If said gear one of at least has at least one and be arranged on radially inner lip-deep switching mechanism, so advantageously implementation structure is delivered to driving torque on gear and/or the gear unit simply.In addition, this can especially simply realize, if jackshaft has the switching mechanism corresponding with the switching mechanism of gear.

The antitorque commentaries on classics of switching mechanism ground and be arranged on the jackshaft regularly at axial location is proposed in a kind of favourable expansion of the present invention.Especially when switching mechanism is set directly on the jackshaft, can in the transmission of driving torque, obtain especially compact conversion equipment, and therefore can save extra connection and/or connection, be arranged on the parts between jackshaft and the switching mechanism.In addition, can be by making jackshaft move to the structural transmission that realizes driving torque on the different gears of gear unit.

If conversion equipment has a connection element; Jackshaft can be connected on the driving torque transfer device through this connection element; Can, hand held power machine under the situation that keeps switching mechanism compact structure mode, realize driving torque advantageously is delivered on the jackshaft when moving so.The driving torque transfer device can constitute by a driver element or by the armature shaft of this driver element, or especially advantageously is made up of an intermediate sleeve.

If conversion equipment has a percussion mechanism (Schlagwerksanordnung), this percussion mechanism can be realized especially compact and cheap conversion equipment so by means of jackshaft mobile being switched on or switched off vertically.Jackshaft this can be directly or the conversion element crossed in the middle of being connected of turned be connected on the percussion mechanism.If conversion equipment also has variable blocking function; This blocking function can be by means of jackshaft moving and changed vertically, so in addition can be by means of the conversion simple in structure of the mobile realization different driving mode of parts, especially jackshaft in the conversion equipment.

In another kind of form of implementation of the present invention, propose, conversion equipment has a single executive component, and this executive component is designed between different type of drive and actuating speed and changes.Therefore can be that the operator who has the hand held power machine of this conversion equipment realizes operation comfort highly by means of the simple conversion logic of conversion equipment.

If executive component is made up of a rotary handle, can advantageously realize conversion especially friendly between different driving mode and/or the actuating speed so to the operator.

Description of drawings

Other advantage is drawn by following description of drawings.A kind of form of implementation of the present invention shown in the drawings.The a plurality of characteristics that comprise in accompanying drawing, specification and the claim can make up.Those skilled in the art can consider these characteristics aptly separately, also can have a mind to the free burial ground for the destitute these characteristics are further made up summary.Among the figure:

(Fig. 1 has illustrated the difference setting (Fig. 1 b to Fig. 1 f) by hand held power machine of the present invention and executive component in a) to Fig. 1 at schematic side view

Fig. 2 is the schematic side elevation of the conversion equipment of hand held power machine shown in Figure 1 in first dislocation;

Fig. 3 is the schematic side elevation of the conversion equipment of hand held power machine in second dislocation;

Fig. 4 is the schematic side elevation of the conversion equipment of hand held power machine in the 3rd dislocation;

Fig. 5 is the schematic side elevation of the conversion equipment of hand held power machine in the 4th dislocation, and;

Fig. 6 is the schematic side elevation of the conversion equipment of hand held power machine in the 5th dislocation;

The specific embodiment

In Fig. 1 a, illustrated by hand held power machine 10 of the present invention, that constitute by hammer drill.Hand held power machine 10 comprises that one has the main handle 38 of executive component 40, and this executive component is used to be switched on or switched off the driver element 50 of hand held power machine 10.Hand held power machine 10 also comprises conversion equipment 12, and it is designed between different driving mode and/or the actuating speed of the cutter in cutter receiver 42 and changes.For this reason; Conversion equipment 12 has a single executive component 36 that is formed by rotary handle; This executive component be arranged on hand held power machine 10 in the zone of cutter receiver 42, and this operating means can be used between different type of drive and actuating speed, changing by the operator of hand held power machine 10.

Conversion equipment 12 among Fig. 2 to 6 comprises the driving torque transfer device 32 that is made up of the tooth sleeve, and this driving torque transmission device is bearing on the housing 46 of hand held power machine 10 through driving bearing 44.For this reason, driving bearing 44 comprises spring element 48, and this spring element 98 is supported on the housing 46 the tooth sleeve vertically.The tooth sleeve is connected with driver element 50 or with the armature shaft 52 of driver element 50 when hand held power machine 10 operations rotationally, and is used for the jackshaft 14 of driving impact device 34 or driving conversion equipment 12.The tooth sleeve comprises gear 54, and this gear constitutes with this tooth sleeve on the end 56 of the driving side of this tooth sleeve integratedly.Gear 54 is delivered to the driving torque of driver element 50 on the tooth sleeve when operation.Jackshaft 14 is arranged on after the tooth sleeve along axial 98, wherein, axial 98 and axial 18 be parallel to jackshaft length extend.For transmitting driving torque to jackshaft 14, jackshaft 14 is connected on the tooth sleeve through coupling arrangement 30.Coupling arrangement 30 comprises two

connection elements

58,60, and they are arranged on the tooth sleeve or on the jackshaft 14.The connection element 58 of tooth sleeve is designed for the connection element 60 of accepting jackshaft 14 at this, and this connection element 60 18 moves in the connection element 58 of tooth sleeve when jackshaft 14 moves vertically vertically.

Be provided with the swing sleeve 96 of percussion mechanism 34 or percussion mechanism 34 around the end 62 of the driving side of jackshaft 14 or around the tooth sleeve.At this, percussion mechanism 34 can be supported around jackshaft 14 or tooth sleeve through two

supporting arrangements

64,66 rotationally.For driving torque being delivered on the swing sleeve 96, the tooth sleeve has connection element 70 in the end 68 of driving side.At this, connection element 70 is coupled in the connection element 72 percussion mechanism 34, a correspondence (Fig. 2 to 6).

Jackshaft has gearshift 28 in the end 74 of the driving side of jackshaft 14, and this gearshift forms by taking toothing.In addition, gearshift 28 antitorque commentaries on classics and being arranged on the jackshaft 14 to 18,98 fixed-site vertically.By means of gearshift 28, the driving torque of jackshaft 14 is delivered on the gear unit 16.Gear unit 16 vertically 18,98 with respect to the drive unit 76 fixed-site ground that forms by hammer pipe, can be supported rotationally around jackshaft 14, so jackshaft 14 is when moving axially, the relative gear unit 16 of this jackshaft moves.In addition, gear unit 16 has two

gears

20,22, and said two gears can support around jackshaft 14 with being independent of each other rotationally, and wherein, each

gear

20,22 is connected with the slave unit 76 that is formed by the hammer pipe respectively rotationally.For this reason, slave unit 76 comprises two

connection elements

92,94 that formed by a toothing respectively, wherein, and connection element always 92,94 of slave unit 76 and the engagement of one of the

gear

20,22 of gear unit 16.When hand held power machine 10 operations; Driving torque is delivered to gear unit 16 or is delivered to two gears 20 from jackshaft 14 through the switching mechanism 28 with jackshaft 14 Construction integrations; On one of 22; This switching mechanism 28 is coupled in the

switching mechanism

24,26

respective gears

20,22, that have the toothing corresponding with the switching mechanism of jackshaft 14 28 (Fig. 2 to 6).In addition, two

gears

20,22 have different working

diameter

78,80, wherein, under the identical situation of gear tooth configuration, have the working diameter 80 bigger than gear 22 towards the gear 22 of percussion mechanism 34.

For being transformed into different dislocation, executive component 36 is connected with jackshaft 14 by means of the coupling arrangement that is not shown specifically.Executive component 36 causes jackshaft 14 18 to move vertically along direction 90 rotation in the clockwise direction, perhaps is in reverse to direction 90 rotating operation elements 36 and will causes jackshaft 14 98 to move (Fig. 1 b to 1f) vertically.Following description operation element 36 is cut the conversion of operation (Fig. 1 b and 2) to the pure operation of drilling fast (Fig. 1 f and 6) along direction 90 from pure cutter.Reverse in the conversion of direction 90 by the operator with the opposite order realization executive component 36 of following gearshift, so detailed.

The pure cutter that hand held power machine 10 has been shown in Fig. 2 is cut operation.Executive component 36 is positioned at cutter and cuts run location (Fig. 1 b); And jackshaft 14 is positioned at the terminal location of outlet side; In this terminal location; 58 of the connection elements of the connection element 60 relative tooth sleeves of jackshaft 14 have distance ground to be provided with, and interrupt to the transmission of the driving torque of jackshaft 14 from the tooth sleeve.At this,---this locking element is after direction 98 is arranged on gear unit 16---is in the locked position of coupler with the switching mechanism 28 of jackshaft 14 to be bearing in the locking element 82 on the jackshaft 14.At this, locking element 82 has the interior toothing that is not shown specifically, and toothing meshes with the switching mechanism 28 of jackshaft 14 in this locked position of coupler in this.Be locking, the housing 46 fixed-site ground of locking element 82 relative hand held power machines 10 is by locking (Fig. 2).The tooth sleeve is in the terminal location of percussion mechanism 34 by means of the spring force of the spring element 48 of driving bearing 44, and this spring force 98 acts on the tooth sleeve vertically.At this, connection element 70 interlockings of tooth sleeve are in the connection element 72 of percussion mechanism 34.By means of connection element 70, the tooth sleeve is delivered to the swing sleeve 96 of percussion mechanism 34 with driving torque, is used to the cutter that is arranged in cutter receiver 42 and produces shock pulse.

If executive component 36 by the operator along direction 90 turn over about 45 the degree and be set on the run location with variable blocking function, then at this moment jackshaft 14 18 moves (Fig. 1 c and 3) vertically.Through jackshaft 14 18 move vertically; Lock position between the interior toothing of locking element 82 or locking element 82 and the switching mechanism 28 of jackshaft 14 is cancelled; And the cutter in the cutter receiver 42 is for example cut a hole the sharpener tool and can be rotated or the location by the operator.58 of the connection elements of the also relative tooth sleeve of connection element 60 of jackshaft 14 have distance ground to be provided with.

If executive component 36 continues to turn over about 45 degree by the operator along direction 90, and is set in the run location that impacts the drilling operation, then jackshaft 14 further 18 moves (Fig. 1 d and 4) vertically.The connection element 60 of jackshaft 14 is fitted in the connection element 58 of tooth sleeve, and when hand held power machine 10 operations, driving torque is delivered on the jackshaft 14 from the tooth sleeve.The conversion equipment 28 of jackshaft 14 is in gearshift 24 engagements of first gear 20 of this and gear unit 16.Driving torque is delivered on the gear 20 of gear unit 16 or gear unit 16 and therefore drives the slave unit 76 that is formed by the hammer pipe from jackshaft 14, slave unit 76 with transmission of torque to the cutter that is arranged in cutter receiver 42.In addition, in service at hand held power machine 10, driving torque is delivered on the percussion mechanism 34 via

connection element

70,72 from the tooth sleeve.The working motion that cutter rotates and impacts when hand held power machine 10 operations.

If executive component 36 is continued to turn over about 45 degree along direction 90 by the operator, and is set in the run location of the pure drilling operation of jogging speed, then jackshaft 14 will continue 18 to move (Fig. 1 e and 5) vertically.By means of moving of jackshaft 14, the tooth sleeve overcomes elastic force 18 motions equally vertically of spring element 48.At this, the connection element 70 of tooth sleeve moves out from the connection element 72 of percussion mechanism 34, makes the setting of turning up the soil of these connection element mutual spacings, and when the driving torque of percussion mechanism 34 is delivered in operation, interrupts.Therewith concurrently; The conversion equipment 28 of jackshaft 14 also 18 moves with jackshaft 14 vertically, and wherein, gearshift 28 continues gearshift 24 engagements with the gear 20 of gear unit 16; Therefore by means of gear 20, be passed on the slave unit 76 with the same actuating speed of impact drilling operation.The cutter that is arranged in cutter receiver 42 only carries out rotational motion when the operation of hand held power machine 10.

If executive component 36 continues to turn over about 45 degree by the operator along direction 90, and when being set in the run location of pure fast drilling operation, jackshaft 14 continue vertically 18 move to driving side terminal location (Fig. 1 f and 6).By means of moving of jackshaft 14, the tooth sleeve continues to overcome the elastic force motion of spring element 48, and the connection element 58 that the connection element 60 of tooth sleeve continues relative percussion mechanism 34 is provided with being separated by.Therewith concurrently; Gearshift 28 also 18 moves with jackshaft 14 vertically, and by taking in gearshift 28 that toothing forms shifted out and moved to gear unit 16 from the gearshift 24 of gear 22 by means of jackshaft 14 the gearshift 26 of gear 22.Because the working diameter 80 that the relative gear of gear 22 20 is bigger, can be to the higher actuating speed of the slave unit that constitutes by the hammer pipe 76 transmission when hand held power machine 10 operations, and the cutter that is arranged in cutter receiver 42 is proceeded rotational motion.

Claims

1. Hand-held power tool with a conversion device (12), which has an axially movable intermediate shaft (14) and a gear unit (16) arranged on the intermediate shaft (14), said Switching means are provided for switching between different drive modes and/or drive speeds of a tool, wherein said intermediate shaft (14) and said gear unit (16) are axially (18, 98) relative to each other The movement is characterized in that the gear unit (16) has at least two gears (20, 22) which are rotatable independently of each other.

2. The hand-held power tool as claimed in claim 1, characterized in that at least one of the gears (20, 22) has at least one switching mechanism (24, 26) arranged on a radially inward surface .

3. Hand-held power tool according to claim 2, characterized in that the intermediate shaft (14) has a switching mechanism ( 28).

4. The hand-held power tool as claimed in claim 3, characterized in that the switching mechanism (28) is arranged on the intermediate shaft (14) in a rotationally fixed manner.

5. The hand-held power tool as recited in claim 3, characterized in that the switching mechanism (28) is arranged on the intermediate shaft (14) in a stationary manner in the axial direction (18, 98).

6. The hand-held power tool as claimed in one of claims 1 to 5, characterized in that the conversion device (12) has a coupling device (30), via which the intermediate shaft (14) can be coupled to a drive torque transfer device (32).

7. The hand-held power tool according to claim 1, characterized in that the conversion device (12) has an impact device (34), which can be axially ( 18, 98) movement is switched on or off.

8. The hand-held power tool as claimed in claim 1, characterized in that the switching device (12) has a variable locking function, which can be axially (18) by means of the intermediate shaft (14) , 98) moves are transformed.

9. The hand-held power tool as claimed in claim 8, characterized in that the switching device (12) has a separate operating element (36) which is provided for switching between different drive modes and drive speeds. conversion between.

10. The hand-held power tool as claimed in claim 9, characterized in that the operating element (36) is formed as a rotary handle.

11. The hand-held power tool as claimed in one of claims 1 to 5, characterized in that the hand-held power tool is a hammer drill.