CN103267095A - Engine tensioner and engine - Google Patents
Engine tensioner and engine Download PDFInfo
- Publication number
- CN103267095A CN103267095A CN2013101748509A CN201310174850A CN103267095A CN 103267095 A CN103267095 A CN 103267095A CN 2013101748509 A CN2013101748509 A CN 2013101748509A CN 201310174850 A CN201310174850 A CN 201310174850A CN 103267095 A CN103267095 A CN 103267095A
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- ratchet
- pin
- plunger
- housing
- pawl
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Abstract
The invention discloses an engine tensioner. A plunger spring and a plunger are inserted into a plunger hole of a casing, a pawl is arranged on the casing through a pawl pin, the ratchet end of the pawl can be meshed with a tooth groove disposed on the plunger, the non-ratchet end of the pawl abuts against the pawl spring, the pawl spring is arranged in a pawl spring hole disposed on the casing, and a keeping pin used for limiting the rotating range of the pawl is arranged at the position close to the non-ratchet end of the pawl. When the non-ratchet end of the pawl abuts against the keeping pin, and the ratchet end of the pawl is meshed with the tooth groove disposed on the plunger so as to limit the plunger to move outwards. The keeping pin is inserted into a keeping pin hole of the casing, a positioning pin is inserted into an installation hole of the casing, the front end of the positioning pin penetrates out of the casing, and the back end of the positioning pin is fixedly connected with the keeping pin through a locking piece. The invention further discloses an engine with the tensioner. A locking structure is simple and fast, convenient to assemble and install without failure, accident damages caused by the fact that a locking assembly is pulled out in advance or is forgotten to be pulled out are totally avoided.
Description
Technical field
The present invention relates to a kind of motor, relate in particular to a kind of motor stretcher.
Background technique
Motor stretcher of the prior art as shown in Figure 1 and Figure 2, comprise housing 1, plunger 2, piston spring 3, ratchet 4, detent pin 5 and ratchet spring 6, housing 1 by two mounting holes 11,12 and bolt be fixed near the timing chain of motor, plug piston spring 3 and plunger 2 in the plunger hole of housing 1, ratchet 4 is installed in the pawl slot of housing 1 by detent pin 5, the ratchet end of ratchet 4 can with plunger 2 on teeth groove engagement, non-ratchet end and the ratchet spring 6 of ratchet 4 offset, and ratchet spring 6 is arranged in the ratchet spring hole of housing 1.In order not install at stretcher or to avoid during off working state plunger 2 to eject, need keying structure be set to plunger 2, in the prior art, as Fig. 1, shown in Figure 2, detent pin 5 and housing 1 Spielpassung, detent pin 5 and ratchet 4 interference fit, lock banking stop 7 interference fit outside detent pin 5 and the housing 1, all being provided with on lock banking stop 7 and the housing 1 can be for the pin-and-hole of lock pin 8 grafting, ratchet 4 rotates synchronously with lock banking stop 7 like this, when lock pin 8 inserts lock banking stop 7 and housing 1, ratchet 4 alignment restrictions can be rotated, because the teeth groove on the ratchet end of ratchet 4 and the plunger 2 engagement, move and avoid its ejection so also just limited plunger 2.
Existing stretcher is when production and assembly, and detent pin is wanted while and lock banking stop, ratchet interference fit, cooperates with body clearance again.This structure on the one hand detent pin will with the lock banking stop interference fit, pass housing and ratchet interference fit again, cause stretcher processing assembling process complexity, difficulty big, on the other hand since between ratchet and the detent pin magnitude of interference be difficult for excessive (excessive then can't assemble at housing), the ratchet load that always withstands shocks in the course of the work, in case degree of being connected firmly reduces, and just may cause detent pin to come off, and causes stretcher to lose check function.Simultaneously because this cooperating structure makes ratchet, detent pin, the lock banking stop formation pawl assembly that is fixed together, mesh together with pawl structures between plunger and the pawl assembly, the pawl assembly that only turns clockwise is also fixing, makes the ratchet end of ratchet and the teeth groove disengaging of plunger just can be pressed into plunger (non-engagement state as shown in Figure 3).After being pressed into plunger, loosen pawl assembly, under the thrust of ratchet spring 6, pawl assembly is rotated counterclockwise with plunger and enters engagement (as shown in Figure 4), adjust the amount of leaning out of plunger 2, will make the pawl assembly rotation, when the hole of lock banking stop when pin-and-hole on the housing aligns, insert lock pin 8, stretcher just can be finished assembling.Above-mentioned assembling process bothers very much, and operation easier is big.
Existing stretcher is on being installed to motor the time, as shown in Figure 1, need to install earlier two bolts, if one of them bolt only is installed, just pull out lock pin 8, under the elastic force effect of piston spring 3, plunger 2 will travel forward and withstand on the chain guide, the counter-force F of chain guide passes to stretcher housing 1 by plunger 2, owing to only a bolt is installed, and can not tighten (another mounting hole no-fix, tighten to cause second bolt to install), stretcher will be around mounted bolt rotation under the effect of counter-force F, postrotational stretcher is no longer aimed at chain guide because of front end, and lock pin pulls out, and plunger 2 can eject rapidly under the effect of spring force, make stretcher that failure is installed, the plunger that ejects when serious can the bullet wound installation personnel.Like this, existing stretcher only after installing and fixing fully on the motor, just can be pulled out lock pin, makes the stretcher plunger eject the engine timing chain of its front of tensioning forward under the thrust of spring.After in case stretcher installs, forget and pull out lock pin that plunger can't eject, the stretcher disabler, because chain lacks tensioning, violent vibration will make timing system lose efficacy rapidly behind the engine start, even damage the engine component of periphery.
Summary of the invention
In order to solve above-mentioned technical problem, one of purpose of the present invention provides a kind of motor stretcher, the product keying structure is simple easy to assembly quick, and product is easy for installation can not make mistakes, and can avoid lock assembly to extract in advance or forget and extract the accident infringement that causes fully.
Two of purpose of the present invention provides a kind of motor that adopts above-mentioned stretcher.
To achieve the above object, the present invention has adopted following technological scheme:
A kind of motor stretcher, comprise housing, plunger, piston spring, ratchet, detent pin and ratchet spring, housing is provided with at least one mounting hole that stretcher is fixedly mounted on the motor, plug piston spring and plunger in the plunger hole of housing, ratchet is installed in the pawl slot of housing by detent pin, the ratchet end of ratchet can with plunger on teeth groove engagement, non-ratchet end and the ratchet spring of ratchet offset, ratchet spring is arranged in the ratchet spring hole of housing, the maintenance pin that is attached with restriction ratchet slewing area of the non-ratchet end of described ratchet, when the non-ratchet end of ratchet offsets with the maintenance pin, thereby the engagement of the teeth groove on the ratchet end of ratchet and plunger restriction plunger outward moves, described maintenance pin is plugged in the maintenance pin-and-hole of housing, plug certain position pin in the mounting hole of housing, the front end of locating stud passes housing, fixedlys connected with keeping pin by lock banking stop in the rear end of locating stud.
As preferably, described ratchet and detent pin Spielpassung, detent pin is fixedlyed connected with housing.Further preferred, described detent pin is connected with the housing interference and die.Simple in structure like this, easy to assembly, be connected firmly.
As preferably, the front end that described locating stud passes housing is taper type.Be easy to the bolt hole on the locating stud front end insertion motor, frustum partly has the effect of guiding and location.
As preferably, the mounting hole Spielpassung on described locating stud and the housing, the maintenance pin-and-hole Spielpassung on described maintenance pin and the housing.Be convenient to plug like this.
As preferably, described locating stud is connected with the lock banking stop interference, and described maintenance pin is connected with the lock banking stop interference.Simple in structure like this, easy to assembly, be connected firmly.
As preferably, described piston spring is given the trend that plunger moves right, the ratchet end of described ratchet be positioned at detent pin the top and with plunger on teeth groove engagement, the non-ratchet end of ratchet is positioned at the below of detent pin, ratchet spring is given the trend that ratchet rotates counterclockwise, and clockwise rotates thereby described maintenance pin is positioned at the left side restriction ratchet of the non-ratchet end of ratchet.
A kind of motor has aforesaid motor stretcher.
Above-mentioned Spielpassung is that IDS is 0～1mm.
The present invention has been owing to adopted above technological scheme, keeps be fixed together formation lock assembly of pin, lock banking stop and locating stud.When plunger is installed, after being pressed into plunger and loosening ratchet according to the method for existing stretcher, as long as ratchet does not block the mounting hole (maintenance pin-and-hole) that keeps pin, just can install to lock assembly together on the stretcher housing, simplify the production and assembly process.Stretcher of the present invention is on being installed to motor the time, can be with locating stud prior to a mounting hole location on the motor, by another mounting hole a bolt is installed then and is tightened, because locating stud has been used the mounting hole on the housing, only pull out locating stud (being lock assembly) and could in this mounting hole, insert another bolt and tighten, avoided lock assembly to extract in advance or forget and extract the accident infringement that causes fully.
Description of drawings
Fig. 1 is the structural representation of stretcher in the prior art;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the cooperating structure schematic representation (non-engagement state) of plunger and ratchet;
Fig. 4 is the cooperating structure schematic representation (engagement) of plunger and ratchet;
Fig. 5 is structural representation of the present invention;
Fig. 6 is the B-B sectional view of Fig. 5;
Fig. 7 is the C-C sectional view of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1:
As Fig. 5, Fig. 6, a kind of motor stretcher shown in Figure 7, comprise housing 1, plunger 2, piston spring 3, ratchet 4, detent pin 5 and ratchet spring 6, housing 1 is provided with for two mounting holes that stretcher are fixedly mounted on the motor, plug piston spring 3 and plunger 2 in the plunger hole of housing 1, ratchet 4 is installed in the pawl slot of housing 1 by detent pin 5, the ratchet end of ratchet 4 can with plunger 2 on teeth groove engagement, non-ratchet end and the ratchet spring 6 of ratchet 4 offset, ratchet spring 6 is arranged in the ratchet spring hole of housing 1, the maintenance pin 9 that is attached with restriction ratchet 4 slewing areas of the non-ratchet end of described ratchet 4, when the non-ratchet end of ratchet 4 offsets with maintenance pin 9, thereby the engagement of the teeth groove on the ratchet end of ratchet 4 and the plunger 2 restriction plunger 2 is outwards mobile, described maintenance pin 9 is plugged in the maintenance pin-and-hole of housing 1, plug certain position pin 10 in the mounting hole 12 of housing 1, the front end of locating stud 10 passes housing 1, fixedlys connected with keeping pin 9 by lock banking stop 7 in the rear end of locating stud 10.
In the present embodiment, described ratchet 4 and detent pin 5 Spielpassung, described detent pin 5 is connected with housing 1 interference and die.The front end that described locating stud 10 passes housing 1 is taper type.Mounting hole Spielpassung on described locating stud 10 and the housing 1, the maintenance pin-and-hole Spielpassung on described maintenance pin 9 and the housing 1.Described locating stud 10 is connected with lock banking stop 7 interference, and described maintenance pin 9 is connected with lock banking stop 7 interference.Described piston spring 3 is given the trend that plunger 2 moves right, the ratchet end of described ratchet 4 be positioned at detent pin 5 the top and with plunger 2 on teeth groove engagement, the non-ratchet end of ratchet 4 is positioned at the below of detent pin 5, ratchet spring 6 is given the trend that ratchet 4 rotates counterclockwise, and clockwise rotates thereby described maintenance pin 9 is positioned at the left side restriction ratchet 4 of the non-ratchet end of ratchet 4.
Stretcher of the present invention is in the production and assembly process, and detent pin 5 and ratchet 4 Spielpassung with the riveted joint of housing 1 interference fit rearward end, guarantee to be connected firmly.Locating stud 10, keep pin 9 and the lock banking stop 7 formation lock assembly that is fixed together.When plunger is installed, after being pressed into plunger and loosening ratchet according to the method for existing stretcher, as long as ratchet does not block the mounting hole that keeps pin, just can install to lock assembly together on the stretcher housing.Simplified the production and assembly process.
When existing stretcher is installed on the motor, be two bolts to be installed earlier pull out lock pin then.Because final step just can be pulled out only lock pin, in case forget in the installation process and pull out only lock pin, will cause the stretcher tensioning function to lose efficacy, cause whole motor to be broken by the chain of vibration at high speed.Existing stretcher has the detent mechanism installation complexity of check function simultaneously, and detent pin is insecure because of the structural limitations installation, may come off because bearing bigger impulsive load, and the stretcher check function was lost efficacy.
Stretcher of the present invention is on being installed to motor the time, can be with locating stud prior to a mounting hole location on the motor, by the mounting hole that does not insert locating stud on the stretcher housing bolt is installed then and is tightened, because locating stud has been used the mounting hole on the housing, only pull out locating stud (being lock assembly) and could in this mounting hole, insert another bolt and tighten, thereby having avoided forgetting pulls out the risk that lock assembly lost efficacy stretcher.And tighten because of a bolt this moment, pull out locating stud after, counter-force F can not make stretcher rotate.Motor stretcher of the present invention, ratchet and detent pin Spielpassung, detent pin and the riveted joint of housing interference fit rearward end, not only easy to assembly, and be connected firmly behind the ratchet process die, make the stretcher check function more reliable.
Thereby, motor stretcher of the present invention has not only been simplified stretcher production and assembly process, can also simplify the installation process of commanding agency, increases the fastness of detent pin, have more high reliability, and had error-disable function when making stretcher on being installed to motor.
A kind of motor has aforesaid motor stretcher.
It is emphasized that: above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment does.
Claims (8)
1. motor stretcher, comprise housing (1), plunger (2), piston spring (3), ratchet (4), detent pin (5) and ratchet spring (6), housing (1) is provided with at least one mounting hole that stretcher is fixedly mounted on the motor, plug piston spring (3) and plunger (2) in the plunger hole of housing (1), ratchet (4) is installed in the pawl slot of housing (1) by detent pin (5), the ratchet end of ratchet (4) can with plunger (2) on teeth groove engagement, the non-ratchet end of ratchet (4) and ratchet spring (6) offset, ratchet spring (6) is arranged in the ratchet spring hole of housing (1), it is characterized in that, the maintenance pin (9) that is attached with restriction ratchet (4) slewing area of the non-ratchet end of described ratchet (4), when the non-ratchet end of ratchet (4) is sold (9) when offseting with maintenance, the ratchet end of ratchet (4) and plunger (2) thus on teeth groove engagement restriction plunger (2) outwards mobile, described maintenance pin (9) is plugged in the maintenance pin-and-hole of housing (1), plug certain position pin (10) in the mounting hole of housing (1), the front end of locating stud (10) passes housing (1), fixedlys connected with keeping pin (9) by lock banking stop (7) in the rear end of locating stud (10).
2. a kind of motor stretcher according to claim 1 is characterized in that, described ratchet (4) and detent pin (5) Spielpassung, and detent pin (5) is fixedlyed connected with housing (1).
3. a kind of motor stretcher according to claim 2 is characterized in that, described detent pin (5) is connected with housing (1) interference and die.
4. a kind of motor stretcher according to claim 1 is characterized in that, the front end that described locating stud (10) passes housing (1) is taper type.
5. a kind of motor stretcher according to claim 1 is characterized in that, the mounting hole Spielpassung on described locating stud (10) and the housing (1), the maintenance pin-and-hole Spielpassung on described maintenance pin (9) and the housing (1).
6. a kind of motor stretcher according to claim 1 is characterized in that, described locating stud (10) is connected with lock banking stop (7) interference, and described maintenance pin (9) is connected with lock banking stop (7) interference.
7. a kind of motor stretcher according to claim 1, it is characterized in that, described piston spring (3) is given the plunger trend that (2) move right, the ratchet end of described ratchet (4) be positioned at detent pin (5) the top and with plunger (2) on teeth groove engagement, the non-ratchet end of ratchet (4) is positioned at the below of detent pin (5), ratchet spring (6) is given the ratchet trend that (4) rotate counterclockwise, described maintenance pin (9) be positioned at ratchet (4) thus the left side restriction ratchet (4) of non-ratchet end clockwise rotate.
8. a motor has as each described motor stretcher in the claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174850.9A CN103267095B (en) | 2013-05-10 | 2013-05-10 | Engine tensioner and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174850.9A CN103267095B (en) | 2013-05-10 | 2013-05-10 | Engine tensioner and engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103267095A true CN103267095A (en) | 2013-08-28 |
| CN103267095B CN103267095B (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310174850.9A Active CN103267095B (en) | 2013-05-10 | 2013-05-10 | Engine tensioner and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103267095B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736655A (en) * | 2014-12-09 | 2016-07-06 | 舍弗勒技术有限两合公司 | Ratchet type hydraulic tensioner |
| CN106886056A (en) * | 2017-03-31 | 2017-06-23 | 上汽通用五菱汽车股份有限公司 | A kind of new work engine timing sprocket tension pin detection means |
| CN108291616A (en) * | 2015-11-25 | 2018-07-17 | 标致雪铁龙汽车股份有限公司 | It is integrated with the stretcher of non return part and locking piece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010009876A1 (en) * | 2000-01-21 | 2001-07-26 | Junya Kurohata | Ratchet tensioner with mechanism for locking and releasing a plunger |
| JP2001208151A (en) * | 2000-01-21 | 2001-08-03 | Tsubakimoto Chain Co | Ratchet tensioner having locking and unlocking mechanism of plunger |
| JP2002021954A (en) * | 2000-07-03 | 2002-01-23 | Tsubakimoto Chain Co | Ratchet type tensioner having unlocking mechanism of plunger |
| DE102006003795A1 (en) * | 2005-02-25 | 2006-09-14 | Tsubakimoto Chain Co. | Ratchet tensioning device |
| CN202746514U (en) * | 2012-05-11 | 2013-02-20 | 吉林大学 | Hydraulic tensioner |
| CN203272644U (en) * | 2013-05-10 | 2013-11-06 | 杭州东华链条集团有限公司 | Engine tensioner and engine |
-
2013
- 2013-05-10 CN CN201310174850.9A patent/CN103267095B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010009876A1 (en) * | 2000-01-21 | 2001-07-26 | Junya Kurohata | Ratchet tensioner with mechanism for locking and releasing a plunger |
| JP2001208151A (en) * | 2000-01-21 | 2001-08-03 | Tsubakimoto Chain Co | Ratchet tensioner having locking and unlocking mechanism of plunger |
| JP2002021954A (en) * | 2000-07-03 | 2002-01-23 | Tsubakimoto Chain Co | Ratchet type tensioner having unlocking mechanism of plunger |
| DE102006003795A1 (en) * | 2005-02-25 | 2006-09-14 | Tsubakimoto Chain Co. | Ratchet tensioning device |
| CN202746514U (en) * | 2012-05-11 | 2013-02-20 | 吉林大学 | Hydraulic tensioner |
| CN203272644U (en) * | 2013-05-10 | 2013-11-06 | 杭州东华链条集团有限公司 | Engine tensioner and engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736655A (en) * | 2014-12-09 | 2016-07-06 | 舍弗勒技术有限两合公司 | Ratchet type hydraulic tensioner |
| CN105736655B (en) * | 2014-12-09 | 2020-02-18 | 舍弗勒技术有限两合公司 | Ratchet type hydraulic tensioner |
| CN108291616A (en) * | 2015-11-25 | 2018-07-17 | 标致雪铁龙汽车股份有限公司 | It is integrated with the stretcher of non return part and locking piece |
| CN106886056A (en) * | 2017-03-31 | 2017-06-23 | 上汽通用五菱汽车股份有限公司 | A kind of new work engine timing sprocket tension pin detection means |
| CN106886056B (en) * | 2017-03-31 | 2023-07-28 | 上汽通用五菱汽车股份有限公司 | Novel engine timing sprocket tensioning pin detects device |
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| Publication number | Publication date |
|---|---|
| CN103267095B (en) | 2015-06-03 |
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