CN100341670C - A hand tool machine particularly in the form of a drilling or percussion hammer - Google Patents
A hand tool machine particularly in the form of a drilling or percussion hammer Download PDFInfo
- Publication number
- CN100341670C CN100341670C CNB2003101163455A CN200310116345A CN100341670C CN 100341670 C CN100341670 C CN 100341670C CN B2003101163455 A CNB2003101163455 A CN B2003101163455A CN 200310116345 A CN200310116345 A CN 200310116345A CN 100341670 C CN100341670 C CN 100341670C
- Authority
- CN
- China
- Prior art keywords
- hand held
- held power
- power machine
- deep drawing
- drawing part
- 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 - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 8
- 238000009527 percussion Methods 0.000 title abstract 2
- 238000007789 sealing Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000002349 favourable effect Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0019—Guide-sleeves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/191—Ram catchers for stopping the ram when entering idling mode
Abstract
A hand tool machine particularly in the form of a drilling or percussion hammer comprises a motor-driven impact mechanism (12), in which a striker (14) is connected preferably by an air cushion to a reciprocating driving element and delivers its energy via an impact body (18), which is guided in an axially movable manner in a guide part (19), to a tool (17) guided in a tool holder (16). The guide part (19) is formed from a deep-drawn part particularly in the form of a deep-drawn guide sleeve (21).
Description
The technology technology
The present invention relates to a kind of hand held power machine, especially drilling machine or jump bit machine.
Background technology
The guide that is used for impact body axially-movable guiding in a kind of known hand held power machine (DE 33 29 005 A1) of the type is made up of a special guide, and this guide is inserted in guiding and impacts in the guide pipe of piston of head and beater mechanism and on axial therein and immovably be fixed.On this guide, in view of the impact body guiding proposes high requirement to its shape and accuracy to size.People attempt by the guiding diameter of guide or the accurate as far as possible machining of guide-contour or grinding are satisfied this requirement.The cost of processing method that is used to make guiding diameter or guide-contour is very high.
Summary of the invention
According to the present invention, a kind of hand held power machine has been proposed, especially drilling machine or jump bit machine, has electric motor driven beater mechanism, impact wherein that head preferably is connected with reciprocating actuator by mattress and energy passes to the cutter that is directed to by the impact body that is directed to axial motion in the cutter receiver in guide, wherein: guide is made of deep drawing part.
By contrast, hand held power machine of the present invention has its advantage, promptly by guide being configured to deep drawing part, the especially deep drawing part of deep drawn pilot sleeve form, can realize very high size and form accuracy when saving great amount of cost.Because this configuration can be accomplished, produces a large amount of numbers of packages with good surface quality and on shape engages with the very high size and the accuracy of shape.In addition because the manufacture that combines with shape has produced the possibility of the more flexible configuration of guiding geometry.
A preferred configuration of the present invention is that this deep drawing part is configured to the pilot sleeve of deep drawn.
According to a kind of favourable form of implementation, impact body cooperates with the corresponding inner peripheral surface of deep drawing part, especially pilot sleeve mutually hermetically at circumference.
According to a kind of favourable form of implementation, impact body has a sealing ring on its circumference, for example an O RunddichtringO.
According to a kind of favourable form of implementation, the inner peripheral surface of deep drawing part, especially pilot sleeve is configured to sealing surface.
According to a kind of favourable form of implementation, deep drawing part, especially pilot sleeve have the ring edge of radially inwardly stretching in one end thereof, and it is as the axial end portion backstop of impact body.
According to a kind of favourable form of implementation, deep drawing part, especially pilot sleeve have the flange of radially outward stretching in its other end, and this flange axially is being bearing on the shoulder on the direction of cutter receiver.
According to a kind of favourable form of implementation, deep drawing part, especially pilot sleeve are received in the sleeve and reach by centering.
According to a kind of favourable form of implementation, shoulder and/or sleeve and cutter receiver are integral piece.
According to a kind of favourable form of implementation, shoulder and sleeve are integral with each other part.
According to a kind of favourable form of implementation, deep drawing part, especially pilot sleeve carry at least one centering part that makes its centering in sleeve, for example a cylindrical part.
According to a kind of favourable form of implementation, centering part, especially cylindrical part are axially resting on the flange of deep drawing part, especially pilot sleeve on the direction of cutter receiver.
Description of drawings
Express embodiments of the invention and explaining in the following description in the accompanying drawings.
Accompanying drawing illustrates the summary longitudinal section of a part of the hand held power machine of a percussive drill form that has a cutter that only is represented by dotted lines, and wherein, the percussive drilling position is shown on the longitudinal central axis line and the no-load running position is shown in its lower section.
The specific embodiment
The part of a hand held power machine 10 shown in the accompanying drawing, this hand held power machine is as drilling machine or jump bit mechanism one-tenth and have a housing 11, this housing has a unshowned drive motor, a speed changer and a beater mechanism 12, and the latter is at least partially disposed on the inside of a guide pipe 13.Beater mechanism 12 have one in guide pipe 13, reach the impact that is directed to slidably 14 hermetically and also have one unshowned, also be in guide pipe 13, reach the actuator that is directed to slidably hermetically, for example be the actuator of a piston form.Be provided with the hole 15 as air duct in the wall of guide pipe 13, it can open or close control with known manner in a front of impacting 14.Impact 14 and actuator between produce a mattress under the influence at reciprocating actuator in the zone that can not see, make by this mattress and to impact 14 and place oscillating movement, wherein impact 14 its energy passed on the cutter 17 that is directed in a cutter receiver 16 in the axial direction.This energy transmission be with known manner by one roughly the impact body 18 of tightening latch form realize, this impact body be set at impact 14 with cutter 17 between reach and in a guide 19, axially be directed to movingly.The corresponding bump that impacts 14 an impact body 18 will cause: impact energy further is delivered on the cutter 17 that is inserted in the cutter receiver 16.
In the accompanying drawings, represent the percussive drilling position on the top of the longitudinal central axis line 20 of hand held power machine 10, its right-hand member axially is pressed on the impact body 18 in 17 usefulness accompanying drawings are fixed a cutting tool in this position.Position shown in below longitudinal central axis line 20 is the no-load running position, and it is 17 compacted to fix a cutting tool in this position.
The guide 19 of the impact body 18 of reception and guiding tightening latch form is located at one heart in the sleeve 30 and axially and immovably is fixed.Impact body 18 must be in guide 19 be easy to move on axially, and all impact energys can be utilized.Reach in order to reach high service life, radial clearance between impact body 18 and the guide 19 and upset gap can only be very little for this reason.Therefore, impact body 18 must have very high requirement to shape and dimensional accuracy by the guiding of guide 19.Simultaneously, manufacturing of guide 19 should be as much as possible little.This will realize like this that promptly guide 19 is made of a deep drawing part, and it especially is configured to the pilot sleeve 21 of deep drawn.Can accomplish thus, produce a large amount of numbers of packages with good surface quality and on shape engages with the very high size and the accuracy of shape, so that can realize being used for the high shape and the dimensional accuracy of impact body 18 guiding, and have significantly reduced manufacturing cost.In addition because the manufacture that combines with shape has produced the possibility of the more flexible configuration of guiding geometry.
Advantageously, impact body 18 cooperates hermetically with the corresponding inner peripheral surface 22 of pilot sleeve 21 in a circumferential direction, so that impact body 18 also can be born sealing function.Impact body 18 has a sealing ring 23 on its circumference, for example be an O type ring.The inner peripheral surface 22 of pilot sleeve 21 constitutes as sealing surface, and pilot sleeve 21 not only is used for the guiding of impact body 18 but also also is used as sealed diameter simultaneously thus.
The deep drawing part of pilot sleeve 21 forms has a radially inner ring edge 24 on the end on a right in accompanying drawing, when the right-hand motion of impact body 18 in accompanying drawing, this ring edge plays the effect of the axial end portion backstop of impact body 18.Pilot sleeve 21 has the flange 25 that upwards outwards stretch in the footpath on the other end, this flange axially is being bearing on the shoulder 31 on the direction of cutter receiver 16.Sleeve 30 constitutes a global facility with shoulder 31 and cutter receiver 16.The pilot sleeve 21 of deep drawing part, especially deep drawn is received in the sleeve 30 and by centering.For centering, this pilot sleeve 21 has at least one centering part 26 that makes pilot sleeve 21 centering in sleeve 30, and this centering part is made of single cylindrical element 27 in illustrated embodiment.This at least one centering part 26 towards cutter receiver 16 axially on rest on the flange 25 of pilot sleeve 21.The described buffering ring 34 of installation between the other end of centering part 26 and the keeper 35 that impacts a receiving system 32.Therefore make pilot sleeve 21 by axial restraint and its at least one centering part 26 is axially fixed in the sleeve 30 by 33 pairs of keepers 35 of ring.
The guide 19 of impact body 18 configurations of described mode can be made with good surface quality cost especially worthwhilely, especially in the zone of inner peripheral surface 22 and outer circumference surface, can reach very high size and form accuracy simultaneously.This impact body 18 that will cause being directed to can move in the axial direction very neatly, and this impact body 18 is also born sealing function, and causes the very high service life of impact body 18 and corresponding guide 19.
Claims (16)
1. hand held power machine, has electric motor driven beater mechanism (12), impact wherein that head (14) is connected with reciprocating actuator and its energy passes to the cutter (17) that is directed to by the impact body (18) that is directed to axial motion in cutter receiver (16) in guide (19), it is characterized in that: guide (19) is made of deep drawing part.
2. according to the hand held power machine of claim 1, it is characterized in that: this deep drawing part is configured to the pilot sleeve (21) of deep drawn.
3. according to the hand held power machine of claim 1 or 2, it is characterized in that: impact body (18) cooperates with the corresponding inner peripheral surface (22) of this deep drawing part mutually hermetically at circumference.
4. according to the hand held power machine of claim 1 or 2, it is characterized in that: impact body (18) has a sealing ring (23) on its circumference.
5. according to the hand held power machine of claim 1 or 2, it is characterized in that: the inner peripheral surface of deep drawing part (22) is configured to sealing surface.
6. according to the hand held power machine of claim 1 or 2, it is characterized in that: deep drawing part has the ring edge of radially inwardly stretching (24) in one end thereof, and it is as the axial end portion backstop of impact body (18).
7. according to the hand held power machine of claim 6, it is characterized in that: deep drawing part has the flange of radially outward stretching (25) in its other end, and this flange axially is being bearing on the shoulder (31) on the direction of cutter receiver (16).
8. according to the hand held power machine of claim 7, it is characterized in that: deep drawing part is received in the sleeve (30) and reaches by centering.
9. hand held power machine according to Claim 8 is characterized in that: shoulder (31) and/or sleeve (30) are integral piece with cutter receiver (16).
10. it is characterized in that according to Claim 8 or 9 hand held power machine: shoulder (31) is integral with each other part with sleeve (30).
11. hand held power machine according to Claim 8 is characterized in that: deep drawing part carries at least one centering part (26) that makes its centering in sleeve (30).
12. the hand held power machine according to claim 11 is characterized in that: centering part (26) is on the flange (25) that axially rests on deep drawing part on the direction of cutter receiver (16).
13. the hand held power machine according to claim 1 is characterized in that: this hand held power machine is drilling machine or jump bit machine.
14. the hand held power machine according to claim 1 is characterized in that: impact head (14) and be connected with reciprocating actuator by mattress.
15. the hand held power machine according to claim 4 is characterized in that: sealing ring (23) is an O RunddichtringO.
16. the hand held power machine according to claim 11 or 12 is characterized in that: this centering part (26) is a cylindrical part (27).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10253973.1 | 2002-11-20 | ||
| DE2002153973 DE10253973A1 (en) | 2002-11-20 | 2002-11-20 | Hand tool, in particular hammer drill or hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502448A CN1502448A (en) | 2004-06-09 |
| CN100341670C true CN100341670C (en) | 2007-10-10 |
Family
ID=29762171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101163455A Expired - Lifetime CN100341670C (en) | 2002-11-20 | 2003-11-19 | A hand tool machine particularly in the form of a drilling or percussion hammer |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100341670C (en) |
| DE (1) | DE10253973A1 (en) |
| GB (1) | GB2395455B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1872910B1 (en) | 2006-07-01 | 2012-11-21 | Black & Decker, Inc. | Method for mesuring the amount of wear of a nose of beat piece in a hammer drill |
| DE102008010100A1 (en) | 2008-02-20 | 2009-08-27 | Robert Bosch Gmbh | Hand tool |
| DE102015226085A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | Hand tool with a switching unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3039617A1 (en) * | 1980-10-21 | 1982-05-19 | Robert Bosch Gmbh, 7000 Stuttgart | DRILLING HAMMER |
| DE3637354A1 (en) * | 1986-11-03 | 1988-05-05 | Bosch Gmbh Robert | Tool holder |
| US5373905A (en) * | 1991-07-08 | 1994-12-20 | Robert Bosch Gmbh | Hammer drill |
| US5437465A (en) * | 1993-10-22 | 1995-08-01 | Atlas Copco Elektrowerkzeuge Gmbh | Tool changing device on a hand-operated machine tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2109739B (en) * | 1981-11-13 | 1986-01-22 | Black & Decker Inc | A power tool having a plastics material housing |
-
2002
- 2002-11-20 DE DE2002153973 patent/DE10253973A1/en not_active Ceased
-
2003
- 2003-11-18 GB GB0326838A patent/GB2395455B/en not_active Expired - Fee Related
- 2003-11-19 CN CNB2003101163455A patent/CN100341670C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3039617A1 (en) * | 1980-10-21 | 1982-05-19 | Robert Bosch Gmbh, 7000 Stuttgart | DRILLING HAMMER |
| DE3637354A1 (en) * | 1986-11-03 | 1988-05-05 | Bosch Gmbh Robert | Tool holder |
| US5373905A (en) * | 1991-07-08 | 1994-12-20 | Robert Bosch Gmbh | Hammer drill |
| US5437465A (en) * | 1993-10-22 | 1995-08-01 | Atlas Copco Elektrowerkzeuge Gmbh | Tool changing device on a hand-operated machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2395455B (en) | 2005-07-20 |
| GB2395455A (en) | 2004-05-26 |
| CN1502448A (en) | 2004-06-09 |
| GB0326838D0 (en) | 2003-12-24 |
| DE10253973A1 (en) | 2004-06-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170213 Address after: Binjiang District, Hangzhou Province, No. 567 Zhejiang Road Patentee after: BOSCH POWER TOOLS (CHINA) Co.,Ltd. Address before: Stuttgart, Germany Patentee before: Robert Bosch GmbH |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071010 |
|
| CX01 | Expiry of patent term |