CN103470707A - Hydraulic tensioner used for vehicle - Google Patents
Hydraulic tensioner used for vehicle Download PDFInfo
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- CN103470707A CN103470707A CN2013103881317A CN201310388131A CN103470707A CN 103470707 A CN103470707 A CN 103470707A CN 2013103881317 A CN2013103881317 A CN 2013103881317A CN 201310388131 A CN201310388131 A CN 201310388131A CN 103470707 A CN103470707 A CN 103470707A
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- plunger
- vehicle
- hydraulic tensioner
- stage clip
- hydraulic
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Abstract
Disclosed is a hydraulic tensioner used for a vehicle. The hydraulic tensioner comprises a barrel with an opening at the front end, a plunger with an opening at the front end and capable of moving along the inner surface of the barrel is arranged in the barrel, a top cover sealing the plunger is arranged at the front end of the plunger, a hydraulic cavity is arranged on the rear side of the plunger, an oil inlet is arranged at the rear end of the barrel and communicated with an oil filling cavity, a rear seat is arranged between the oil filling cavity and the hydraulic cavity, an oil incoming hole communicating the oil filling cavity with the hydraulic cavity is formed in the middle of the rear seat, a one-way valve is arranged on the oil incoming hole, a screw is arranged between the rear seat and the plunger, an internal thread is formed on the inner surface of the plunger, and an external thread matched with the internal thread is formed on the screw. The hydraulic tensioner is simple in structure, convenient to mount and demount, good in tensioning effect and capable of effectively providing continuous and stable tensioning pressure to structures like a timing belt and a timing chain so as to improve stability of the vehicle.
Description
Technical field
The present invention relates to the tensioning technology of vehicle belt, relate in particular to a kind of hydraulic tensioner for vehicle.
Background technique
In the past, between the crankshaft of mobile engine and camshaft, be rotated the driving mediums such as Timing Belt of transmission, the vibration of generation while carrying out in order to suppress them, and maintain suitable tension force, be widely used hydraulic tensioner.
Existing hydraulic tensioner usually by plunger intercalation sliding freely in the plunger reception hole be formed on shell, be formed with the cylindric hollow portion of an end opening on this plunger, along plunger reception hole and cylindric hollow portion and take in to stretching out the plunger application of force spring of direction to the plunger application of force.
And, in the hyperbaric chamber formed at the cylindric hollow portion by plunger reception hole and plunger, one-way valve is set, on the top of the holder of this check valve assembly, the open-work that carries out supply in arranging from the oil circuit of ball seat to hyperbaric chamber R.
But, existing hydraulic tensioner, check valve assembly is fixed, therefore the displacement of sliding sharp if the tension change of plunger and timing chain is corresponding, holder produces small position skew along ball seat to stretching out direction, may cause one-way valve to have effect bad.
In addition, when plunger is pushed back to the tension adjustment of carrying out timing chain, be clipped in the plunger application of force spring in the gap between plunger and holder, stop the high pressure oil in hyperbaric chamber to spill to housing exterior via the slip peripheral wall surfaces of plunger reception hole, tension change sharply that can not the transient absorption timing chain.
In addition, because the top at holder arranges open-work, therefore likely supply source to ball seat side surplus supply and unidirectional valve ball makes open-work become the state of remaining silent, thereby occur to supply with to hyperbaric chamber the unfavorable condition of hydraulic oil.
For this reason, artificer of the present invention, by concentrating on studies and designing, comprehensively is engaged in for a long time experience and the achievement of related industry for many years, and research and design goes out a kind of hydraulic tensioner for vehicle, to overcome above-mentioned defect.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic tensioner for vehicle, it is simple in structure, and handling are convenient, and tension effects is good, can effectively to structures such as Timing Belt, timing chains, provide continual and steady tensioning pressure, to improve intact stability.
For achieving the above object, the invention discloses a kind of hydraulic tensioner for vehicle, it is characterized in that: the cylindrical shell that described hydraulic tensioner comprises front opening, be provided with the plunger of the front opening that can move along cylinder inner surface in described cylindrical shell, the front end of described plunger is provided with the top cover of the described plunger of sealing, the rear side of described plunger is provided with hydraulic pressure cavity, described cylinder back-end is provided with a filler opening, described filler opening is communicated with an oiling chamber, be provided with a back seat between described oiling chamber and hydraulic pressure cavity, the centre of described back seat has the oil inlet hole that is communicated with described oiling chamber and hydraulic pressure cavity, described oil inlet hole is provided with one-way valve, be provided with a screw rod between described back seat and plunger, the internal surface of described plunger is provided with internal thread, described screw rod is provided with the outside thread matched with described internal thread.
Wherein: be provided with an elastic compression assembly between described screw rod and top cover, this elastic compression assembly comprises a push rod and the first stage clip, one end of described the first stage clip is resisted against described screw rod, the rear end of described push rod is provided with to be stretched into the body of rod in described the first stage clip and stretches out with the push rod head against described top cover from the body of rod, the other end of described the first stage clip is resisted against described push rod head, and the abutment end of described push rod head is truncated-spherical.
Wherein: the periphery of described plunger is provided with groove, is provided with seal ring in groove.
Wherein: the width of described seal ring is less than described recess width so that seal ring can move in groove.
Wherein: described one-way valve comprises the ball seat that embeds described oil inlet hole, and described ball seat has the oilhole that is communicated with described oiling chamber and the sphere that is positioned at oilhole one end, and a ball movably is positioned on described sphere.
Wherein: also be provided with a gland, have the 3rd stage clip between described gland and ball, described gland has the cover clamp of the described ball of covered section and the 3rd stage clip, and the neutral position of described cover clamp is provided with one and caves in to locate described the 3rd stage clip.
Wherein: a plurality of clamp bars from described cover clamp to downward-extension to coat the whole moving process of ball, but the lug boss of covered section ball seat is extended in the lower end of each clamp bar, the end of each lug boss is provided with the outer rim that is posted by described back seat, and one second stage clip is located between described outer rim and described screw rod.
By said structure, the hydraulic tensioner for vehicle of the present invention has been realized following technique effect:
1, reliable in structure, guarantee lasting tension effects, and, when being subject to acute variation, still can effectively be cushioned;
2, good sealing effect, avoided the leakage of high pressure oil;
3, the one-way sealing effect structure is good, makes the hydraulic oil in high-voltage oil cavity can obtain supplementing of continuous and effective.
The present invention will be further described in detail by the following specific embodiments, and will be more apparent and obvious to understand further combined with the description of the drawings.
The accompanying drawing explanation
Fig. 1 has shown the application schematic diagram of the present invention for the hydraulic tensioner of vehicle.
Fig. 2 has shown the sectional view of hydraulic tensioner of the present invention.
Fig. 3 has shown the structural representation of one-way valve of the present invention.
Reference character:
101: driving sprocket wheel; 102: driven sprocket; 103: transmission component; 104: hydraulic tensioner; 105: arc pressuring plate; 11: cylindrical shell; 12: hydraulic pressure cavity; 13: filler opening; 14: the oiling chamber; 15: rush down oil-gap; 21: plunger; 22: top cover; 23: screw rod; 24: groove; 25: seal ring; 26: outside thread; 27: internal thread; 28: the first stage clips; 29: push rod; 291: push rod head; 292: truncated-spherical; 31: back seat; 32: oil inlet hole; 33: the second stage clips; 34: gland; 341: cover clamp; 342: depression; 343: clamp bar; 344: lug boss; 345: outer rim; 35: the three stage clips; 36: ball; 37: ball seat; 371: sphere; 372: oilhole.
embodiment
Referring to Fig. 1, shown the hydraulic tensioner for vehicle of the present invention.
The driving sprocket wheel 101 and the transmission component 103 between driven sprocket 102 that are installed on engine crankshaft carry out tensioning by hydraulic tensioner 104 by arc pressuring plate 105, and described hydraulic tensioner 104 is mounted on the engine body of vehicle.
Optionally, described transmission component 103 can be drive chain or flat-toothed belt.
Referring to Fig. 2, the concrete structure that has shown hydraulic tensioner 104, the cylindrical shell 11 that described hydraulic tensioner 104 comprises front opening, be provided with the plunger 21 of the front opening that can move along cylindrical shell 11 internal surfaces in described cylindrical shell 11, the front end of described plunger 21 is provided with the top cover 22 of the described plunger of sealing, the rear side of described plunger 21 is provided with hydraulic pressure cavity 12, described cylindrical shell 11 rear ends are provided with a filler opening 13, described filler opening 13 is communicated with an oiling chamber 14, be provided with a back seat 31 between described oiling chamber 14 and hydraulic pressure cavity 12, the centre of described back seat 31 has the oil inlet hole 32 that is communicated with described oiling chamber 14 and hydraulic pressure cavity 12, described oil inlet hole 32 is provided with one-way valve, be provided with a screw rod 23 between described back seat 31 and plunger 21, the internal surface of described plunger 21 is provided with internal thread 27, described screw rod 23 is provided with the outside thread 26 matched with described internal thread 27.
Thus, can provide hydraulic compression to the transmission component of vehicle by above-mentioned hydraulic tensioner, and the cooperation of internal and external threads can effectively overcome the problem of plunger.
Compress effect for further improving, be provided with an elastic compression assembly between described screw rod 23 and top cover 22, optionally, referring to Fig. 2, shown the embodiment that Elastic of the present invention holds down assembly, this elastic compression assembly comprises a push rod 29 and the first stage clip 28, one end of described the first stage clip 28 is resisted against described screw rod 23, the rear end of described push rod 29 is provided with to be stretched into the body of rod in described the first stage clip 28 and stretches out with the push rod head 291 against described top cover 22 from the body of rod, the other end of described the first stage clip 28 is resisted against described push rod head 291, the abutment end of described push rod head 291 is truncated-spherical 292, thereby against the time, can provide centering against power, avoid against inefficacy.
There is the oil-gap of rushing down 15 between plunger 21 and cylindrical shell 11, due to the oil pressure sealing that is difficult to realize when mobile, thus, at the periphery of described plunger 21, be provided with groove 24 when mobile, be provided with seal ring 25 in groove 24, to be sealed rushing down oil-gap 15, preferably, the width of described seal ring 25 is less than described recess width, so that seal ring can move in groove, therefore sealing effect is better, and avoid plunger and cylindrical shell to the excessive wear of seal ring, can keep the sealing effect of longer time.
Referring to Fig. 3, shown an embodiment of one-way valve in the present invention, described one-way valve comprises the ball seat 37 that embeds described oil inlet hole 32, sphere 371, one balls 36 that described ball seat 37 has the oilhole 371 that is communicated with described oiling chamber 14 and is positioned at oilhole 372 1 ends movably are positioned on described sphere 371.
Movement for restriction ball 36, also be provided with a gland 34, there is the 3rd stage clip 35 between described gland 34 and ball 36, described gland 34 has the cover clamp 341 of the described ball 36 of covered section and the 3rd stage clip 35, the neutral position of described cover clamp 341 is provided with a depression 342 to locate described the 3rd stage clip 35, a plurality of clamp bars 343 from described cover clamp 341 to downward-extension to coat the whole moving process of ball 35, each clamp bar 343 equi-spaced apart are arranged, but the lug boss 344 of covered section ball seat 37 is extended in the lower end of each clamp bar 343, the end of each lug boss 344 is provided with the outer rim 345 that is posted by described back seat 31, one second stage clip 33 is located between described outer rim 345 and described screw rod 23, one-way valve is pressed in to described back seat.
Known by foregoing description, hydraulic tensioner of the present invention has following advantage:
1, reliable in structure, guarantee lasting tension effects, and, when being subject to acute variation, still can effectively be cushioned;
2, good sealing effect, avoided the leakage of high pressure oil;
3, the one-way sealing effect structure is good, makes the hydraulic oil in high-voltage oil cavity can obtain supplementing of continuous and effective.
It is evident that, above description and record are only for example rather than in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the optimal mode that the present invention does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present to be to implement the specific examples of instruction of the present invention, scope of the present invention will comprise any embodiment of the specification that falls into front and appended claim.
Claims (7)
1. the hydraulic tensioner for vehicle, it is characterized in that: the cylindrical shell that described hydraulic tensioner comprises front opening, be provided with the plunger of the front opening that can move along cylinder inner surface in described cylindrical shell, the front end of described plunger is provided with the top cover of the described plunger of sealing, the rear side of described plunger is provided with hydraulic pressure cavity, described cylinder back-end is provided with a filler opening, described filler opening is communicated with an oiling chamber, be provided with a back seat between described oiling chamber and hydraulic pressure cavity, the centre of described back seat has the oil inlet hole that is communicated with described oiling chamber and hydraulic pressure cavity, described oil inlet hole is provided with one-way valve, be provided with a screw rod between described back seat and plunger, the internal surface of described plunger is provided with internal thread, described screw rod is provided with the outside thread matched with described internal thread.
2. the hydraulic tensioner for vehicle as claimed in claim 1, it is characterized in that: be provided with an elastic compression assembly between described screw rod and top cover, this elastic compression assembly comprises a push rod and the first stage clip, one end of described the first stage clip is resisted against described screw rod, the rear end of described push rod is provided with to be stretched into the body of rod in described the first stage clip and stretches out with the push rod head against described top cover from the body of rod, the other end of described the first stage clip is resisted against described push rod head, and the abutment end of described push rod head is truncated-spherical.
3. the hydraulic tensioner for vehicle as claimed in claim 1, it is characterized in that: the periphery of described plunger is provided with groove, is provided with seal ring in groove.
4. the hydraulic tensioner for vehicle as claimed in claim 3, it is characterized in that: the width of described seal ring is less than described recess width so that seal ring can move in groove.
5. the hydraulic tensioner for vehicle as claimed in claim 1, it is characterized in that: described one-way valve comprises the ball seat that embeds described oil inlet hole, described ball seat has the oilhole that is communicated with described oiling chamber and the sphere that is positioned at oilhole one end, and a ball movably is positioned on described sphere.
6. the hydraulic tensioner for vehicle as claimed in claim 5, it is characterized in that: also be provided with a gland, there is the 3rd stage clip between described gland and ball, described gland has the cover clamp of the described ball of covered section and the 3rd stage clip, and the neutral position of described cover clamp is provided with one and caves in to locate described the 3rd stage clip.
7. the hydraulic tensioner for vehicle as claimed in claim 6, it is characterized in that: a plurality of clamp bars from described cover clamp to downward-extension to coat the whole moving process of ball, but the lug boss of covered section ball seat is extended in the lower end of each clamp bar, the end of each lug boss is provided with the outer rim that is posted by described back seat, and one second stage clip is located between described outer rim and described screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103881317A CN103470707A (en) | 2013-09-01 | 2013-09-01 | Hydraulic tensioner used for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103881317A CN103470707A (en) | 2013-09-01 | 2013-09-01 | Hydraulic tensioner used for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103470707A true CN103470707A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103881317A Pending CN103470707A (en) | 2013-09-01 | 2013-09-01 | Hydraulic tensioner used for vehicle |
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| Country | Link |
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| CN (1) | CN103470707A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317228A (en) * | 2017-01-16 | 2018-07-24 | Ntn株式会社 | Chain tensioning device |
| CN111889986A (en) * | 2020-08-14 | 2020-11-06 | 湖州锐狮标准件制造有限公司 | Pin structure for automobile tensioner and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001124159A (en) * | 1999-10-27 | 2001-05-08 | Ntn Corp | Chain tensioner |
| CN1811226A (en) * | 2005-01-25 | 2006-08-02 | 株式会社椿本链索 | Hydraulic chain tensioner |
| CN101255909A (en) * | 2007-02-27 | 2008-09-03 | 株式会社椿本链索 | Hydraulic tensioner |
| US20080261736A1 (en) * | 2006-09-01 | 2008-10-23 | Kouichi Onimaru | Chain tensioner |
| JP2009014071A (en) * | 2007-07-03 | 2009-01-22 | Ntn Corp | Chain tensioner |
| EP2107271A1 (en) * | 2008-04-02 | 2009-10-07 | NTN Corporation | Chain tensioner |
| CN102840288A (en) * | 2011-06-23 | 2012-12-26 | 株式会社椿本链条 | Hydraulic tensioner |
-
2013
- 2013-09-01 CN CN2013103881317A patent/CN103470707A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001124159A (en) * | 1999-10-27 | 2001-05-08 | Ntn Corp | Chain tensioner |
| CN1811226A (en) * | 2005-01-25 | 2006-08-02 | 株式会社椿本链索 | Hydraulic chain tensioner |
| JP2006207624A (en) * | 2005-01-25 | 2006-08-10 | Tsubakimoto Chain Co | Hydraulic chain tensioner |
| US20080261736A1 (en) * | 2006-09-01 | 2008-10-23 | Kouichi Onimaru | Chain tensioner |
| CN101255909A (en) * | 2007-02-27 | 2008-09-03 | 株式会社椿本链索 | Hydraulic tensioner |
| JP2009014071A (en) * | 2007-07-03 | 2009-01-22 | Ntn Corp | Chain tensioner |
| EP2107271A1 (en) * | 2008-04-02 | 2009-10-07 | NTN Corporation | Chain tensioner |
| CN102840288A (en) * | 2011-06-23 | 2012-12-26 | 株式会社椿本链条 | Hydraulic tensioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317228A (en) * | 2017-01-16 | 2018-07-24 | Ntn株式会社 | Chain tensioning device |
| CN108317228B (en) * | 2017-01-16 | 2022-10-28 | Ntn株式会社 | Chain tensioner |
| CN111889986A (en) * | 2020-08-14 | 2020-11-06 | 湖州锐狮标准件制造有限公司 | Pin structure for automobile tensioner and preparation method thereof |
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Application publication date: 20131225 |
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| RJ01 | Rejection of invention patent application after publication |