WO2007013138A1 - ギアポンプ - Google Patents
ギアポンプ Download PDFInfo
- Publication number
- WO2007013138A1 WO2007013138A1 PCT/JP2005/013622 JP2005013622W WO2007013138A1 WO 2007013138 A1 WO2007013138 A1 WO 2007013138A1 JP 2005013622 W JP2005013622 W JP 2005013622W WO 2007013138 A1 WO2007013138 A1 WO 2007013138A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tooth
- teeth
- gears
- gear
- gear pump
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
Definitions
- the present invention relates to a zero-backlash gear pump in which backlash is extremely reduced in order to suppress the amplitude of discharge pulsation.
- the noise of the hydraulic control apparatus is mainly caused by the amplitude of the discharge pulsation of the hydraulic pump.
- a gear pump there is known a pump in which a so-called backlash, which is a gap in a gear meshing portion, is brought close to zero in order to reduce the amplitude of the discharge pulsation.
- This type of gear pump is commonly referred to as a zero backlash gear pump.
- FIG. 3 and FIG. 4 show a conventional zero-backlash gear pump.
- the conventional zero backlash gear pump has a pair of gears 1 and 2 inserted into the body bores bl and b2 of the gear case G.
- the gears 1 and 2 form tooth surfaces 3 and 4 of the teeth la and 2a along an involute curve. Further, the tip thickness t of the teeth la, 2a is
- the zero backlash gear pump configured as described above is configured such that the gears 1 and 2 of the gears 1 and 2 are pressed by the gears 1 and 2 from the discharge chamber 5 side to the suction chamber 6 side during the break-in operation. 2 a thinly cuts the inner surfaces of the body bores bl and b2 adjacent to the suction chamber 6 to form so-called gear tracks 7 and 7 (see FIG. 3).
- the teeth la and 2a of the gears 1 and 2 have the tooth surfaces 3 and 4 and the tooth tip surfaces 10 and 11 located behind the rotation direction R.
- Horn formed by PI, P Secondly, the metal of the gear case G adheres, and the tooth tips 8 and 9 shown in Fig. 4 are formed.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-289180
- the zero backlash gear pump has very little backlash, so there is almost no play between the pair of gears 1 and 2. For this reason, when the cohesive tooth tips 8 and 9 are crushed between the tooth surfaces 3 and 4, a force that moves in the gear tracks 7 and 7 acts on the gears 1 and 2. As described above, when a force in the direction of the gear tracks 7 and 7 acts on the gears 1 and 2, the rotation centers of the gears 1 and 2 move slightly, and the teeth la and 2a are newly added to the gear case G by the amount of movement. The gear tracks 7 and 7 will be deepened. This creates a gap between gears 1, 2 and gear tracks 7, 7.
- An object of the present invention is to provide a gear pump in which when the teeth of a pair of gears are engaged with each other, the bonded tooth tip formed at the corner of the tooth is strongly pressed against the opposing tooth surface and is not crushed. It is.
- the gear teeth cut the corner formed by the tooth surface and the tooth tip surface located at the rear of the rotation direction, and the tooth tip thickness t is reduced. It is characterized by being thinner than the designed tooth thickness t.
- a corner formed by the tooth surface and the tooth tip surface located behind the rotation direction of the gear teeth is cut, and the tooth tip thickness t is determined as the designed tooth tip. Since it is thinner than the thickness t,
- FIG. 1 is an enlarged view showing gear teeth in the first embodiment of the present invention.
- FIG. 2 is an enlarged view showing gear teeth in a second embodiment.
- FIG. 3 is a sectional view of the gear pump.
- FIG. 4 is an enlarged view showing the teeth of a conventional gear.
- FIG. 5 is a partially enlarged view of FIG.
- FIG. 1 shows a first embodiment of the present invention.
- the present invention is characterized by the teeth la and 2a of the gears 1 and 2, and the other configurations are the same as those of the conventional example. Therefore, in the following, the same reference numerals are given to the same configurations as the conventional one.
- the teeth la and 2a of the gears 1 and 2 cut the corners PI and P2 formed by the tooth surfaces 3 and 4 and the tooth tip surfaces 10 and 11 opposite to the rotation direction R.
- the tooth tip thickness t is made thinner than the designed tooth tip thickness t.
- the corners Pl and P2 of the teeth la and 2a are cut by (0. 07 to 0 ⁇ 35) X to the tip thickness direction to form cut surfaces SI and S2. Yes. That is, the tip thickness t force 3 ⁇ 4 ⁇ (0.0.07
- the height 1 in the toothpaste direction is within a range that does not hinder the smooth engagement of the gears 1 and 2, that is, cut by (0.05 to 0.15) X m (m: module). I am doing so.
- the corners PI and P2 of the teeth la and 2a are applied in the direction of the thickness of the tip by (0.0 to 0.35) Xt.
- S2 is formed with adhesive tips 8, 9 which are strongly pressed against the tooth surfaces 3, 4 of the opposing teeth 2a, la and crushed. In other words, conventional problems cannot be solved.
- the teeth la and 2a of the gears 1 and 2 are forces that cut the corners PI and P2 to form the cut surfaces SI and S 2.
- the second embodiment shown in FIG. Cut the corners on the opposite side of the above-mentioned corners PI, P2 by (0. 07-0. 35) X t
- the surfaces Tl and T2 may be formed.
- the cut surfaces SI, S 2 and Tl, T2 are formed on both sides of the teeth la, 2a, the gears 1, 2 can be incorporated into the gear case G regardless of the front and back sides.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005003637T DE112005003637B4 (de) | 2005-07-26 | 2005-07-26 | Zahnradpumpe |
PCT/JP2005/013622 WO2007013138A1 (ja) | 2005-07-26 | 2005-07-26 | ギアポンプ |
CN2005800514292A CN101248276B (zh) | 2005-07-26 | 2005-07-26 | 齿轮泵 |
KR1020087001995A KR101237112B1 (ko) | 2005-07-26 | 2005-07-26 | 기어펌프 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/013622 WO2007013138A1 (ja) | 2005-07-26 | 2005-07-26 | ギアポンプ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007013138A1 true WO2007013138A1 (ja) | 2007-02-01 |
Family
ID=37683046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/013622 WO2007013138A1 (ja) | 2005-07-26 | 2005-07-26 | ギアポンプ |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR101237112B1 (ja) |
CN (1) | CN101248276B (ja) |
DE (1) | DE112005003637B4 (ja) |
WO (1) | WO2007013138A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20122168A1 (it) * | 2012-12-18 | 2014-06-19 | Mario Antonio Morselli | Macchina idraulica a ingranaggi e relativa ruota dentata |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012221947A1 (de) * | 2012-11-30 | 2014-06-05 | Robert Bosch Gmbh | Außenzahnradmaschine |
KR102530389B1 (ko) * | 2022-05-24 | 2023-05-10 | 주식회사 한양산업 | 소화약제 펌프 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11210644A (ja) * | 1998-01-30 | 1999-08-03 | Shimadzu Corp | 歯車ポンプモータ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4266915A (en) * | 1978-07-10 | 1981-05-12 | Tyrone Hydraulics Inc. | Gear pumps and motors |
JPH112191A (ja) * | 1997-06-13 | 1999-01-06 | Shimadzu Corp | 歯車ポンプ又はモータ |
DE10003735A1 (de) * | 2000-01-28 | 2000-11-16 | Bosch Gmbh Robert | Hydraulische Zahnradmaschine |
CN1316162C (zh) * | 2003-11-24 | 2007-05-16 | 大连铁道学院 | 非对称双圆弧齿形中高压齿轮泵 |
-
2005
- 2005-07-26 CN CN2005800514292A patent/CN101248276B/zh active Active
- 2005-07-26 KR KR1020087001995A patent/KR101237112B1/ko active IP Right Grant
- 2005-07-26 WO PCT/JP2005/013622 patent/WO2007013138A1/ja active Application Filing
- 2005-07-26 DE DE112005003637T patent/DE112005003637B4/de not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11210644A (ja) * | 1998-01-30 | 1999-08-03 | Shimadzu Corp | 歯車ポンプモータ |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20122168A1 (it) * | 2012-12-18 | 2014-06-19 | Mario Antonio Morselli | Macchina idraulica a ingranaggi e relativa ruota dentata |
WO2014199202A1 (en) * | 2012-12-18 | 2014-12-18 | Danfoss Power Solutions S.R.L. | Geared hydraulic machine and relative gear wheel |
CN104919181A (zh) * | 2012-12-18 | 2015-09-16 | 丹佛斯动力系统有限责任公司 | 齿轮液压机器及相关齿轮 |
CN104919181B (zh) * | 2012-12-18 | 2018-04-27 | 丹佛斯动力系统有限责任公司 | 齿轮液压机器及相关齿轮 |
US10024317B2 (en) | 2012-12-18 | 2018-07-17 | Danfoss Power Solutions S.R.L. | Geared hydraulic machine and relative gear wheel |
Also Published As
Publication number | Publication date |
---|---|
CN101248276B (zh) | 2010-08-11 |
KR101237112B1 (ko) | 2013-02-25 |
DE112005003637T5 (de) | 2008-06-05 |
CN101248276A (zh) | 2008-08-20 |
KR20080025179A (ko) | 2008-03-19 |
DE112005003637B4 (de) | 2013-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI336373B (en) | Screw pump and screw rotor | |
US7488163B2 (en) | Trochoid oil pump | |
WO2007013138A1 (ja) | ギアポンプ | |
CA2550313C (en) | Oil pump and automatic transmission including the same | |
JP4381838B2 (ja) | ギアポンプ | |
JP3830313B2 (ja) | ギヤポンプ | |
KR102194954B1 (ko) | 기어형 유압 머신 및 상대 기어 휠 | |
JP4917921B2 (ja) | 逃しポケットを備える外接歯車ポンプ | |
JPH0544651A (ja) | 内接歯車ポンプ | |
JP4028774B2 (ja) | トロコイドポンプ | |
JP4770216B2 (ja) | 歯車ポンプまたはモータ | |
US8033196B2 (en) | Resin double helical gear pair | |
JP4172877B2 (ja) | 歯車ポンプ | |
JP5032736B2 (ja) | 歯車ポンプまたはモータ | |
JPH03202686A (ja) | 歯車ポンプ | |
JPS6345513B2 (ja) | ||
JP2580996Y2 (ja) | 歯車ポンプ又はモーター | |
JP3433533B2 (ja) | 歯車ポンプ又はモータ | |
JP6954366B2 (ja) | 歯車ポンプ又はモータ | |
JPS6340948B2 (ja) | ||
JPH112191A (ja) | 歯車ポンプ又はモータ | |
JPS6345514B2 (ja) | ||
JPH11210644A (ja) | 歯車ポンプモータ | |
JPH11223184A (ja) | ギヤポンプ | |
JP2013245682A (ja) | 内接歯車ポンプ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1120050036375 Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020087001995 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580051429.2 Country of ref document: CN |
|
RET | De translation (de og part 6b) |
Ref document number: 112005003637 Country of ref document: DE Date of ref document: 20080605 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 05767186 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: JP |