CN1603655A - Assembly structure of gear - Google Patents
Assembly structure of gear Download PDFInfo
- Publication number
- CN1603655A CN1603655A CN 200410064425 CN200410064425A CN1603655A CN 1603655 A CN1603655 A CN 1603655A CN 200410064425 CN200410064425 CN 200410064425 CN 200410064425 A CN200410064425 A CN 200410064425A CN 1603655 A CN1603655 A CN 1603655A
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- CN
- China
- Prior art keywords
- gear
- axle
- keyway
- key member
- balace weight
- 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.)
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- Gears, Cams (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The purpose of the invetion is to improve workability in assembling a gear into a shaft by stably holding a key member with a collar member being fitted into the shaft, so as to prevent the key member from coming off. In assembling a balancer shaft 2 where a rotation driving force of a crankshaft 1 is transmitted to the balancer shaft 2, a balancer driven gear 3 is assembled into the balancer shaft 2 with a key member and a key groove through engagement of a balancer drive gear 1h on the crankshaft 1 and the balancer driven gear 3 on the balance shaft 2. Part of a key member 4 is inserted into a key groove 51 of a collar member 5 and a key groove 23 of the shaft 2 to be held, and a key groove 3g of the gear 3 is inserted into the key member 4, thus the gear 3 can be assembled into the shaft 2.
Description
Technical field
The present invention relates to the assembly structure of a kind of gear, particularly relate to the assembly structure of the balace weight shaft balancing device driven gear of internal-combustion engine particularly.
Background technique
In the past, in being equipped with the internal-combustion engine of balace weight, in the device that the assembling of balace weight shaft balancing device driven gear is finished by key member and keyway, consider the situation of the phase coincidence of balace weight axle and bent axle, adopt the key member that in the keyway of balace weight axle, is pressed into maintenance in advance to insert the fit of the keyway of balancer driven gear.But this gear fit must be squeezed into keyway with key member by hammer etc. for key member being pressed in the keyway that remains on axle, and this operation is difficult to carry out its operability extreme difference in the axle after the assembling.Therefore in the assembling of the described gear of the axle after assembling, the fit of replacing described gear often adopts key member to remain in the keyway of axle not to be the key member that is pressed into but is in the state of pine to insert this gear fit of the keyway of gear.(for example with reference to patent documentation 1)
Open flat 4-30339 communique (first page, second figure) in fact
Summary of the invention
In the above-mentioned patent documentation 1 described invention shown in Figure 5, the assembling of balace weight axle 02 makes it to carry out with bent axle 01 phase coincidence, when assembling balace weight axle 02, utilize balancer driven gear 01h and the position registration mark (not shown) that is assemblied in two gears of the balancer driven gear 03 on the balace weight axle 02 on the bent axle 01 for this reason.And to balace weight axle 02 assembling balancer driven gear 03 is that the balace weight axle 02 that becomes assembled state is carried out, and keeps key member 04 in advance at this keyway of 02 023, carries out under the state that remains on the comparison pine of this key member 04.
Chimeric balancer driven gear 03 on the balace weight axle 02 that keeps key member 04, this gear 03 suitably rotates on balace weight axle 02, position registration mark (not shown) position of balancer driven gear 01h on its position registration mark (not shown) and the bent axle 01 overlaps, this state keeps this gear 03 down, described axle 02 suitably rotates, the keyway 03g of its key member 04 and described gear 03 inserts this gear 03 when consistent, the keyway 03g of described key member 04 and this gear 03 inserts combination, simultaneously, described driving gear 01h engagement on this gear 03 and the bent axle 01, and carry out to the described gear 03 of described axle 02 assembling.
But, in the above-mentioned patent documentation 1 described invention, to balace weight axle assembling balancer driven gear the time have such problem: because key member remains on the state that is in pine in this keyway, though so there is the advantage of inserting key member to this keyway easily, but during assembling gear 03, key member 04 comes off from the keyway 023 of balace weight axle 02 easily, assembling gear 03 when must pin key member 04 by hand, operation is difficult to carry out, and its operability is bad.
As everyone knows, in the existing above-mentioned gear assembling, in being pressed into the device of the structure that keeps key member in advance, keyway has such problem: as mentioned above because the keyway of the balace weight axle assembled is pressed into key member, must key member be squeezed into keyway by hammer, undertaken by hammer in a conned space that such to squeeze into operation be difficult, its operability is bad.
According to the problems referred to above, of the present invention by key member and keyway in the assembly structure of axle assembling gear, countermeasures such as employing prevents that key member from coming off, it is good and reduce its running cost to seek the operability of gear assembling, and strives for providing structure very simply to the assembly structure of described axle assembling gear.Particularly, the key member by keyway and balancer driven gear is to the assembling of balace weight axle, from the operability that improves the gear assembling with reduce cost and simplify viewpoint such as its structure, can realize that the assembly structure of the described gear of above-mentioned purpose is raised one's head and looked and can be treated.
The present invention relates to be used to solve the structure-improved of the gear assembly structure of described problem, it utilizes key member and keyway to the axle assembling gear, it is characterized in that having: described axle; Washer part, it has the keyway of and insertion key member chimeric with described axle; Key member, it inserts between the keyway of the keyway of this washer part and described axle and keeps its part under described washer part and the chimeric state of axle; Gear, insert a described part in its keyway and insert the key member that keeps, by between the keyway of the keyway of described washer part and described axle, described gear being fixed on by key member on described toward inserting the keyway that inserts described gear on the described key member that keeps its part.In addition, in described gear installation structure, its feature is that also described gear is a balancer driven gear, and described axle is the balace weight axle of internal-combustion engine.
First aspect present invention is utilizing key member and keyway in the gear assembly structure of axle assembling gear, has: described axle; Washer part, it has the keyway of and insertion key member chimeric with described axle; Key member, it inserts between the keyway of the keyway of this washer part and described axle and keeps its part under described washer part and the chimeric state of axle; Insert a described part in the gear, its keyway and insert the key member that keeps.By between the keyway of the keyway of described washer part and described axle, described gear being fixed on by key member on described toward inserting the keyway that inserts described gear on the described key member that keeps its part.Like this, the part of key member is in the state that inserts maintenance between the keyway of the keyway of washer part and axle in the operation of gear assembling because before this gear assembling, can prevent fully that key member from coming off from axle, there is no need to pin key member and insert gear to key member simultaneously with hand, therefore can seek to become easy to the axle assembling gear, and significantly improve its operability, assembly cost is reduced.
And, second aspect present invention, in the assembly structure of described gear, described gear is a balancer driven gear, described axle is the balace weight axle of internal-combustion engine.Thus, in the assembling of balace weight axle assembling balance driven gear, do not come off owing to remain on the key member of balace weight axle, there is no need to pin key member with hand described driven gear is installed simultaneously, it is easy therefore can to seek this assembling work, and assembly cost reduces.
Description of drawings
Fig. 1 is near the figure of the side structure the crank box of the expression internal-combustion engine of using gear assembly structure of the present invention;
Fig. 2 is the figure of a longitudinal profile of the expression crank box of using the internal-combustion engine that the structural portion of gear assembly structure of the present invention represents;
Fig. 3 is the figure of the critical piece of expression gear assembly structure of the present invention;
Fig. 4 is the figure of the structure of expression balancer driven gear of the present invention, Fig. 4 (a) is the A-A sectional drawing of Fig. 4 (c), Fig. 4 (b) is the profile that its part is cut off the side of the Fig. 4 (a) that represents, and Fig. 4 (c) is the profile with the opposite side of Fig. 4 (a) of its part cut-out expression;
Fig. 5 is the figure of a section of the crank box of the internal-combustion engine represented of the gear assembly structure portion of the existing invention of expression.
Embodiment
In the assembling of the balace weight shaft balancing device driven gear of internal-combustion engine, implement.
Referring to figs. 1 through Fig. 4 embodiments of the invention are described.
The Structure of Internal-Combustion Engine portion that the assembly structure of balancer driven gear 3 of the present invention is used in Fig. 1,2 expressions, Fig. 1 represents the side of the crank box 10 of internal-combustion engine E, Fig. 2 represents the longitudinal sectional drawing of the crank box 10 of internal-combustion engine E.
As shown in Figure 2, in crank box 10, bent axle 1 is rotatably supported by bearing, the bearing of this bent axle 1 is bearing in abutting connection with two side positions of this pin 11 of the crank pin 11 of bent axle 1, as shown in Figure 2, and in the figure, the axle on right side is by roller bearing 1a supporting, and the axle in left side is by ball bearing 1b supporting.
The rotatably mounted big end 1d that connecting rod 1c is arranged on the crank pin 11 of bent axle 1, though not shown, well-known, by wrist pin piston is installed on the small end on the connecting rod 1c.
In abutting connection with the position that the bearing support by described ball bearing 1b keeps left the sprocket wheel 1e that cam chain drives usefulness is installed on bent axle 1, in addition, its outside is equipped with starting driven gear 1f, and on the shaft end in its outside generator 1g is installed.And the right-hand outside of the bearing support of the roller bearing 1a of bent axle 1 is equipped with a pair of gear 1h, the 1i that differs in size in abutting connection with the right-hand outside of this bearing support, its gearwheel 1h is the balace weight driving gear, this gear 1h and balancer driven gear 3 engagements that are installed on the balace weight axle 2.
And, Fig. 1 only represents the part of its engagement appearance, small gear 1i is the driven gear of driven gear 8a engagement movable chimeric on the main shaft 8 with speed change gear, the rotation driving square tube of this small gear 1i is crossed the engagement with driven gear 8a, also give the main shaft 8 of speed change gear by clutch transmits, the described rotary driving force that passes to main shaft 8 is through this countershaft 9 that passes to of the gear ratio of the hope selected by the change gear mechanism of 9 of this main shaft 8 and countershafts, and makes vehicle driving by suitable drive mechanisms (not shown) driving wheel.
As shown in Figure 2, balace weight axle 2 is in crank box 10, bearing support 2b rotatably support by the bearing support 2a that is positioned at its position that relatively takes near central authorities and its left axle head, thus, balace weight axle 2 has to connect and is positioned at also the stretch out outstanding axial region 21 of specific length of right-hand bearing support 2a.Bearing support 2a, the 2b of balace weight axle 2 all work by ball bearing, the interval between the bearing of the supporting of this bearing 2a, 2b be set at the bearing supporting of described bent axle 1 at interval about equally.
On the outstanding axial region 21 that the described right-hand bearing support 2a of perforation balace weight axle 2 extends above-mentioned balancer driven gear 3 is installed.And the part that is positioned at the central authorities between described bearing support 2a, 2b of trunnion shaft 2 promptly is provided with balancer weight 22 from the position that the central part of the total length of balace weight axle 2 keeps left, and this balancer weight 22 forms by forge integratedly with balace weight axle 2 or casting etc.
And when assembling balace weight axle 2, its balancer weight 22 is positioned on the center line of 12,12 of counterweights of bent axle 1.When the relatively rotation place of the counterweight 12,12 of the relative bent axle 1 of balancer weight 22 became as shown in Figure 2 position and concerns, the location of this balancer weight 22 guaranteed that balancer weight 22 does not contact and rotates 12,12 of described counterweights.
During 2 assemblings of balace weight axle, be positioned at the phase place of the balancer weight 22 on the center line of 12,12 of counterweights of bent axle 1 and counterweight 12, the 12 opposite and rotations synchronously of crank 1, the counterweight the 12, the 12nd of bent axle 1 shown in Figure 2, the balancer weight 22 of balace weight axle 2 is positioned at the top in the time of below, and the state that the major part of balancer weight 22 is placed on 12,12 of counterweights is the opposite state that rotates synchronously of the described phase place of easy to understand.
The balace weight axle 2 of said structure forms seeks to absorb the effect that relaxes the vibration that cogging that office that bent axle 1 accepts drives causes, by the phase place of its balancer weight 22 as mentioned above and counterweight 12, the 12 opposite and rotations synchronously of bent axle 1, the vibration that the cogging of offsetting described bent axle 1 by this balancer weight 22 causes seeks to suppress and relax the vibration that described cogging causes.And such balace weight axle 2 itself has been well-known.In addition, M is a starting motor in Fig. 1,2.
On the outstanding axial region 21 of above-mentioned balace weight axle 2, balancer driven gear 3 is installed as described, shown in Fig. 3,4, balancer driven gear 3 has: the geared parts 31 that foreign steamer is surveyed, it is at its peripheral part formative gear 31a; The axle bush parts 32 of interior wheel side, it has the installation base portion 3b of conduct described later to the assembly department of balace weight axle 2 installations, this balancer driven gear 3, as shown in Figure 3, be fixed on the balace weight axle 2 by month shape key 4 as the semilune key member described later by wheel side shaft lining parts 32 in it, and be installed on this axle 2.
Insert damping spring 3c and damping rubber 3d at the foreign steamer side gear parts 31 of balancer driven gear 3 and 32 of interior wheel side shaft lining parts, and foreign steamer side gear parts 31 are inwardly taken turns side shaft lining parts 32 and are pushed (with reference to (a) of Fig. 4) by belleville spring 3e from the one side.And, and the rotary driving force of bent axle 1 is passed to described foreign steamer side gear parts 31 by peripheral part the gear 3a that forms and the balace weight driving gear 1h engagement that is installed on the bent axle 1 of foreign steamer side gear parts 31.Pass to the rotary driving force of these foreign steamer side gear parts 31, these foreign steamer side gear parts 31 are rotated, compress described damping spring 3c by the rotation of these foreign steamer side gear parts 31, and then compression damping rubber 3d, pass to the described interior side shaft lining parts 32 of taking turns and make this interior wheel side shaft serve as a contrast parts 32 rotations.
Therefore, in balancer driven gear 3, inwardly taking turns side shaft lining parts 32 by described damping spring 3c and damping rubber 3d from foreign steamer side gear parts 31 transmits in the process of rotary driving forces, the rotating torques change of the fluctuation of the described driving force of bent axle 1 is absorbed mitigation effectively by absorption percussion and the buffering effect that described damping spring 3c and damping rubber 3d form, and eliminate the toothstrike of 3 of balace weight driving gear 1h and balancer driven gears, and pass to trunnion shaft 2 by installation base portion 3b described later as the assembly department of this balancer driven gear 3.
And, as shown in Figure 3, as described later in detail, balancer driven gear 3 is installed on the balace weight axle 2 by month shape key 4 as key, for this reason, the installation base portion 3b that wheel side shaft lining parts 32 have convex in it, this installations base portion have to the axis hole 3f of balace weight axle 2 chimeric usefulness and much longer than the axial length (transverse tooth thickness) of the geared parts 31 of foreign steamer side.Form the keyway 3g of prescribed depth on the inner peripheral surface of the axis hole 3f of this convex installation base portion 3b with the width of regulation.And the keyway 3g of this axis hole 3f extends longitudinally with the degree of depth of the certain described regulation of the inner peripheral surface of axis hole 3f and the width of regulation, and the break-through convex is installed base portion 3b two ends.
And on balace weight axle 2, form the keyway 23 of described keyway 3g of the installation base portion 3b axis hole 3f of corresponding balancer driven gear 3, this keyway 23 is formed on the position of ball bearing 2a1 of the right-hand bearing support 2a of the outstanding axial region 21 that extends near the right-hand bearing support 2a from balace weight axle 2, and be formed on outstanding axial region 21 surfaces vertically on, with Rack and prescribed depth its surperficial part is cuted out into circular-arc, the circular arc part of the semi-moon shaped month shape key 4 of the suitable income of its shape.The width of the width of certain described regulation and month shape key 4 slightly together.
At this, describe in detail with reference to Fig. 3 balancer driven gear 3 is installed on the balace weight axle 2.
As mentioned above, balancer driven gear 3 from the outstanding axial region 21 outstanding as the ball bearing 2a1 of the right side bearing 2a of balace weight axle 2 by the keyway 3g that forms at its axis hole 3f by the moon shape key 4 install.Inserting moon shape key 4 by the fixing described driven gears 3 of moon shape key 4 simultaneously by two keyways to the keyway 3g of the keyway 51 of ring spacer parts 5 and this gear 3 carries out.
To balace weight axle 2 assembling balancer driven gears 3, at first, in crank box 10 by on the rotatably mounted balace weight axle 2 of ball bearing 2a1,2b1 from the chimeric ring spacer parts 5 of right-hand member side with keyway 51, make the left side 5b of these ring spacer parts 5 contact the right side of described right-hand ball bearing 2a1, suitably rotatable washer parts 5 overlap the position of the keyway 51 of the position of keyway 23 of axle 2 and washer part 5.Under the position consistency state of both keyways 23,51, with the moon shape key 4 circular-arc bottom slip into and present the semi-moon shaped month shape key 4 that inserts when cutting out in the circular-arc keyway 23 as key member on the axle 2, the front end of this key 4 is inserted between both keyways.
As shown in Figure 3, insertion moon shape key 4 between two keyways of the keyway 23 of balace weight axle 2 and the keyway 51 of washer part 5, the part of the length of the summary about 1/3 of the total length by its part front-month shape key 4 is inserted in the keyway 51 of washer part 5 and is carried out, the remainder of the summary about 2/3 of month shape key 4 only inserts these key 4 circular-arc bottoms the keyway 23 of balace weight axle 2, the surface side of straight line shape that forms this key 4 is as the expose key portion 4a in fact outstanding from balace weight axle 2 surfaces, and this state shape next month key 4 inserts and keeps (fixing) in the keyway 23 of the keyway 51 of washer part 5 and balace weight axle 2.
Secondly, keeping under the above-mentioned state on month balace weight axle 2 of shape key 4, from the chimeric balance driven gear 3 of its right-hand member side.On the balace weight axle 2 chimeric balancer driven gear 3 not with the balace weight driving gear 1h engagement of bent axle 1, near this gear 1h, on this axle 2, rotate established amount, make the engaging position label alignment (all not shown) of the balace weight driving gear 1h of the engaging position mark of balancer driven gear 3 and bent axle 1.
And, on the position of the engaging position label alignment of the balace weight driving gear 1h of the engaging position of balancer driven gear 3 mark and bent axle 1, pin with hand and to keep balancer driven gear 3, rotary balancer axle 2 is up to moon shape key 4 the position and the position consistency of the keyway 3g of described balancer driven gear 3 that keeps by washer part 5 on balace weight axle 2.
If the position of the position of month shape key 4 that keeps on the adjustment balace weight axle 2 and the keyway 3g of balancer driven gear 3, the end face of keyway 3g that then makes balancer driven gear 3 is to moon shape key 4 the above-mentioned 4a of key portion that exposes on the balace weight axle 2, make this gear 3 this on 2 to the left of Fig. 3 to being pressed into, described key member 4 is inserted the keyway 3g that is attached to this gear 3, balace weight driving gear 1h on this gear 3 and the bent axle 1 meshes simultaneously, makes the right side 5a of the left side contact pad coil component 5 of this gear 3.
Thereafter, be screwed into turnbuckle 7 by on the screw section 24 of balace weight axle 2 right-hand axle heads, being situated between by pad 6, push the installation base plate 3b of the interior wheel side shaft lining parts 32 of balancer driven gear 3, also make the right-hand side of an end 5b contact ball bearing 2a1 of ring spacer parts 5 by this balancer driven gear 3, balancer driven gear 3 and ring spacer parts 5 become one as a result, and near balancer driven gear 3 position described outstanding axial region 21 axle heads of the conduct of balace weight axle 2 fixedly secures by described month shape key 4 and is installed on this axle 2.
As mentioned above, by moon shape key 4 assembling balancer driven gear 3 on the balace weight axle 2, keep month part of shape key 4 because between the keyway 23 of the keyway 51 of washer part 5 and balace weight axle 2, insert before 3 assemblings of this gear, thus the moon shape key 4 do not come off and be held from balace weight axle 2.
Therefore, assembling needn't be pinned a moon shape key 4 with hand during balancer driven gear 3 on balace weight axle 2, makes to assemble balancer driven gear 3 on the balace weight axle 2 and become very easy, and the operability of its assembling significantly improves, and can seek to reduce assembly cost.
The assembly structure of gear of the present invention can be applicable in the gear assembling in various machineries and the vehicle etc.
Claims (2)
1. the assembly structure of a gear, it utilizes key member and keyway to go up an assembling gear toward axle, it is characterized in that having: described axle; Washer part, the keyway that it has chimeric described axle and inserts key member; Key member, it inserts between the keyway of the keyway of this washer part and described axle and keeps its part under described washer part and the chimeric state of axle; Insert a described part in the gear, its keyway and insert the key member that keeps,
By between the keyway of the keyway of described washer part and described axle, inserting described keyway on the described key member that keeps its part and described gear be fixed on by key member on described toward inserting.
2. the assembly structure of gear as claimed in claim 1 is characterized in that, described gear is a balancer driven gear, and described axle is the balace weight axle of internal-combustion engine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP342283/03 | 2003-09-30 | ||
| JP342283/2003 | 2003-09-30 | ||
| JP2003342283A JP4480975B2 (en) | 2003-09-30 | 2003-09-30 | Gear assembly structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603655A true CN1603655A (en) | 2005-04-06 |
| CN1329672C CN1329672C (en) | 2007-08-01 |
Family
ID=34536617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100644255A Active CN1329672C (en) | 2003-09-30 | 2004-08-24 | Assembly structure of gear |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4480975B2 (en) |
| CN (1) | CN1329672C (en) |
| BR (1) | BRPI0404103B1 (en) |
| MX (1) | MXPA04009252A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5037388B2 (en) * | 2008-02-29 | 2012-09-26 | 本田技研工業株式会社 | Balancer device having a damper mechanism |
| DE102009020134A1 (en) * | 2009-05-06 | 2010-11-11 | Schaeffler Technologies Gmbh & Co. Kg | Mass balancing transmission of an internal combustion engine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4736225Y1 (en) * | 1969-09-12 | 1972-11-01 | ||
| US3890850A (en) * | 1973-05-21 | 1975-06-24 | Foote Foundry Co J B | Transmission with draw-key type shift |
| JPS6162662A (en) * | 1984-09-04 | 1986-03-31 | Fuji Hensokuki Kk | Method to couple pinion with drive shaft |
| JPH0240345Y2 (en) * | 1984-10-11 | 1990-10-29 | ||
| JPS6227222U (en) * | 1985-08-01 | 1987-02-19 | ||
| JPH0430339U (en) * | 1990-07-06 | 1992-03-11 | ||
| JP3089849B2 (en) * | 1992-09-08 | 2000-09-18 | トヨタ自動車株式会社 | Engine balancer device |
| US5483847A (en) * | 1993-05-05 | 1996-01-16 | Eaton Corporation | Transmission countershaft assembly |
| JP3536893B2 (en) * | 1997-06-05 | 2004-06-14 | ダイハツ工業株式会社 | Apparatus for mounting power transmission wheel to rotating shaft of internal combustion engine |
-
2003
- 2003-09-30 JP JP2003342283A patent/JP4480975B2/en not_active Expired - Lifetime
-
2004
- 2004-08-24 CN CNB2004100644255A patent/CN1329672C/en active Active
- 2004-09-23 MX MXPA04009252 patent/MXPA04009252A/en active IP Right Grant
- 2004-09-24 BR BRPI0404103A patent/BRPI0404103B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA04009252A (en) | 2005-06-08 |
| JP4480975B2 (en) | 2010-06-16 |
| BRPI0404103A (en) | 2005-05-24 |
| CN1329672C (en) | 2007-08-01 |
| BRPI0404103B1 (en) | 2015-12-29 |
| JP2005106219A (en) | 2005-04-21 |
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