CN207111860U - A kind of timing stretcher - Google Patents
A kind of timing stretcher Download PDFInfo
- Publication number
- CN207111860U CN207111860U CN201721114210.9U CN201721114210U CN207111860U CN 207111860 U CN207111860 U CN 207111860U CN 201721114210 U CN201721114210 U CN 201721114210U CN 207111860 U CN207111860 U CN 207111860U
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- CN
- China
- Prior art keywords
- housing
- guide pillar
- steel ball
- spring
- valve
- 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 - Fee Related
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Abstract
The utility model provides a kind of timing stretcher, belongs to technical field of automobile accessories.It solves the problems such as existing timing stretcher is fragile.This timing stretcher includes the pressure chamber having in housing and housing, guide pillar is provided with housing, the outer end of guide pillar is stretched out pressure chamber and set, pressure-releasing chamber is additionally provided with housing, it is plugged with relief valve to housing interference fit, the Anti-isenagage structure for preventing relief valve from departing from housing is provided between valve casing and housing that relief valve has, the inner of guide pillar axially offers mounting hole, guide pillar spring is installed in mounting hole, housing is fixed with the check valve valve body positioned at the inner top of guide pillar, check valve valve body circumferentially offers end in fuel feed hole and one-way valve body and offers oil-through-hole, guide pillar spring is supported by spring base, steel ball spring is provided with spring base, steel ball spring is supported by steel ball and steel ball spring provides elastic force and steel ball is had the trend for being plugged in oil-through-hole all the time.The utility model has the advantages that sound construction, working stability and service life are long.
Description
Technical field
The utility model belongs to technical field of automobile accessories, is related to a kind of stretcher, more particularly to a kind of timing stretcher.
Background technology
Timing stretcher provides the pressure for pointing to Timing Belt or timing chain, and tensioning wheel directly contacts with Timing Belt,
And guide rail directly contacts with timing chain, their pressures that stretcher is provided while with Timing Belt or timing chain operating
Power is applied to thereon, Timing Belt or timing chain is kept suitable tensioning degree.
Existing timing stretcher causes to damage in order to avoid hydraulic fluid pressure is too high, can all install and let out on stretcher
Pressure valve, because to cause the pressure relief opening on the housing of the pressure relief vent face stretcher of relief valve, if by relief valve and stretcher shell
Body is threadedly coupled, then can not ensure pressure relief vent face pressure relief opening, is let out so stretcher housing all by being interference fitted is plugged with
Pressure valve, but in use, when hydraulic fluid pressure increases suddenly in stretcher housing, then the hydraulic pressure of hypertonia be present
Oil impact relief valve simultaneously goes out relief valve the situation of stretcher housing, causes stretcher to damage, and stretcher enters hydraulic oil
Be not sufficiently stable, water conservancy diversion be present, in addition stretcher contact place lubricity it is bad, abrasion it is larger, service life is short.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, there is provided a kind of feed flow force feed is unidirectional
Into and the good timing stretcher of structure connectivity robustness.
The purpose of this utility model can be realized by following technical proposal：A kind of timing stretcher, including housing and shell
The pressure chamber having in vivo, described housing is interior to be provided with the guide pillar for being matched with pressure chamber, and pressure is stretched out in the outer end of described guide pillar
Chamber is set, and the pressure-releasing chamber for being communicated in pressure chamber is additionally provided with described housing, is plugged with pressure release to described housing interference fit
Valve, the valve port of described relief valve are communicated in pressure-releasing chamber, it is characterised in that between valve casing and housing that described relief valve has
Provided with preventing relief valve from departing from the Anti-isenagage structure of housing, the inner of described guide pillar axially offers mounting hole, described peace
Guide pillar spring is installed, described housing is fixed with the check valve valve body positioned at the inner top of guide pillar, and described is unidirectional in dress hole
Valve body circumferentially offers fuel feed hole and the inner of check valve valve body towards guide pillar axially offers the logical oil for being communicated in fuel feed hole
Hole, described guide pillar spring are supported by the spring base at end in one-way valve body, bomb with steel balls are provided with described spring base
Spring, described steel ball spring is supported by steel ball and steel ball spring provides elastic force so that steel ball has all the time is plugged in becoming for oil-through-hole
Gesture.
This timing stretcher is in use, hydraulic oil enters from the fuel feed hole of check valve valve body, then by oil-through-hole and overcomes
The elastic force of steel ball spring, promoting steel ball, so as to which hydraulic oil enters in pressure chamber, hydraulic oil promotes guide pillar to stretch out pressure away from oil-through-hole
Power chamber, the outer end of guide pillar are used to contradict timing guide rail, and the setting of steel ball and steel ball spring prevents hydraulic oil from flowing back, this timing
Stretcher good operating stability；When hydraulic fluid pressure increase, hydraulic oil flow to pressure-releasing chamber from pressure chamber, then is let out from relief valve
Pressure, if hydraulic fluid pressure is higher, Anti-isenagage structure also can guarantee that relief valve without departing from housing, avoids damage from ensureing relief valve
Normal work.
In a kind of above-mentioned timing stretcher, the valve casing that described Anti-isenagage structure includes relief valve and had circumferentially opens up
Some annular grooves one, jump ring is arranged with described annular groove one, the ring for jump ring insertion is offered on described housing
Connected in star two.So easy to process, jump ring plays barrier effect, and anti-detachment effect is good.
As another situation, in a kind of above-mentioned timing stretcher, described Anti-isenagage structure has including relief valve
The convex shoulder for the circle radially protruding that some valve casings have, described housing have riveting in the riveting side on convex shoulder.This spline structure
Connectivity robustness is good, and relief valve is without departing from housing.
In a kind of above-mentioned timing stretcher, side wall of the described guide pillar close to its outer end, which offers, is communicated in mounting hole
Oil outlet, tubular fuel-displaced cylinder is supported by by step in described guide pillar, between described fuel-displaced cylinder and guide pillar inwall
Provided with fixed cylinder, described fixed cylinder, which has to be provided with the roof contradicted for guide pillar spring and fixed cylinder, to be pressed on fuel-displaced cylinder nozzle
Steel ball, between the roof and steel ball of described fixed cylinder be provided with provide elastic force cause steel ball to be plugged in the steel ball of fuel-displaced cylinder nozzle
Spring, the roof of described fixed cylinder prejudicially offer be communicated in mounting hole enter oilhole.When hydraulic oil promotes the outer of guide pillar
When pressure chamber is stretched out at end, section hydraulic oil is entered in fixed cylinder by entering oilhole, and counter gush of hydraulic oil can overcome steel ball and spring
Elastic force causes steel ball to depart from fuel-displaced cylinder nozzle, and hydraulic oil enters back into fuel-displaced cylinder, is flowed out afterwards from oil outlet, and guide pillar is used to contradict
Outer end be lubricated, reduce abrasion, extend service life.
In a kind of above-mentioned timing stretcher, described relief valve includes the sealing for being cylindrical in shape and being set close to pressure-releasing chamber
Cylinder, is equipped with pressure release fuse between described sealing drum and valve casing, described pressure release fuse has the bar portion for stretching into sealing drum, let out
Press fuse that also there is the bulge loop of a circle radially protruding, offer elastic force is provided between described pressure release fuse and valve casing bulge loop is begun
There is the pressure release spring for being sealed in sealing drum nozzle trend eventually.The pressure relief vent for being communicated in housing pressure relief opening is offered on valve casing, when
When hydraulic fluid pressure in pressure-releasing chamber increases, hydraulic oil overcomes the elastic force of pressure release spring, promotes the axial movement of pressure release fuse, so as to
Hydraulic oil enters in valve casing and flowed out from pressure relief vent, so as to which pressure release, above-mentioned pressure leak process stability are good.
Compared with prior art, the good operating stability of this timing stretcher, relief valve is without departing from housing, pressure leak process
Stable, security is good, and the lubricity at guide rail outer end is good, and abrasion is small, service life length.
Brief description of the drawings
Fig. 1 is the structure sectional view of this timing stretcher.
In figure, 1, housing；2nd, pressure chamber；3rd, guide pillar；3a, mounting hole；3b, oil outlet；4th, pressure-releasing chamber；5th, relief valve；5a、
Valve casing；5b, sealing drum；5c, pressure release fuse；5d, bar portion；5e, bulge loop；5f, pressure release spring；6th, guide pillar spring；7th, one-way valve
Body；7a, fuel feed hole；7b, oil-through-hole；8th, spring base；9th, steel ball spring；10th, steel ball；11st, jump ring；12nd, fuel-displaced cylinder；13rd, it is fixed
Cylinder；13a, roof；13b, enter oilhole；14th, steel ball；15th, steel ball and spring.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in figure 1, this timing stretcher includes the pressure chamber 2 having in housing 1 and housing 1, matching is provided with housing 1
In the guide pillar 3 of pressure chamber 2, the outer end of guide pillar 3 is stretched out pressure chamber 2 and set, and the pressure release for being communicated in pressure chamber 2 is additionally provided with housing 1
Chamber 4, relief valve 5 is plugged with to the interference fit of housing 1, the valve port of relief valve 5 is communicated in pressure-releasing chamber 4, the valve casing that relief valve 5 has
The Anti-isenagage structure for preventing relief valve 5 from departing from housing 1 is provided between 5a and housing 1, the inner of guide pillar 3 axially offers mounting hole
Guide pillar spring 6 is installed, housing 1 is fixed with the check valve valve body 7 positioned at the inner top of guide pillar 3, check valve in 3a, mounting hole 3a
Valve body 7 circumferentially offers fuel feed hole 7a and the inner of check valve valve body 7 towards guide pillar 3 axially offers and is communicated in fuel feed hole 7a's
Oil-through-hole 7b, guide pillar spring 6 are supported by the spring base 8 at the inner of check valve valve body 7, steel ball spring are provided with spring base 8
9, steel ball spring 9 is supported by steel ball 10 and steel ball spring 9 provides elastic force so that steel ball 10 has all the time is plugged in oil-through-hole 7b's
Trend.
Further describe in detail, relief valve 5 includes the sealing drum 5b for being cylindrical in shape and being set close to pressure-releasing chamber 4, sealing drum 5b and valve
Pressure release fuse 5c is equipped between shell 5a, there is pressure release fuse 5c the bar portion 5d for stretching into sealing drum 5b, pressure release fuse 5c also to have
The bulge loop 5e of one circle radially protruding, offer elastic force is provided between pressure release fuse 5c and valve casing 5a and causes bulge loop 5e that there is sealing all the time
In the pressure release spring 5f of sealing drum 5b nozzle trend.Anti-isenagage structure includes the valve casing that has of relief valve 5 5a weeks in the present embodiment
To the annular groove one offered, jump ring 11 is arranged with annular groove one, the annular being embedded in for jump ring 11 is offered on housing 1
Groove two.
In order that the lubricity at the outer end of guide pillar 3 is good to increase the service life, side wall of the guide pillar 3 close to its outer end offers
Mounting hole 3a oil outlet 3b is communicated in, guide pillar 3 is interior to be supported by tubular fuel-displaced cylinder 12, fuel-displaced cylinder 12 and guide pillar by step
Fixed cylinder 13 is provided between 3 inwalls, fixed cylinder 13, which has, is provided with pressure in the roof 13a contradicted for guide pillar spring 6 and fixed cylinder 13
Steel ball 14 on the fuel-displaced nozzle of cylinder 12, offer elastic force is provided between the roof 13a and steel ball 14 of fixed cylinder 13 and causes steel ball 14
The steel ball and spring 15 of the fuel-displaced nozzle of cylinder 12 is plugged in, the roof 13a of fixed cylinder 13, which is prejudicially offered, is communicated in mounting hole 3a's
Enter oilhole 13b.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (5)
1. the pressure chamber (2) having in a kind of timing stretcher, including housing (1) and housing (1), described housing (1) is interior to be set
There is the guide pillar (3) for being matched with pressure chamber (2), the outer end of described guide pillar (3) is stretched out pressure chamber (2) and set, described housing (1)
The pressure-releasing chamber (4) for being communicated in pressure chamber (2) is inside additionally provided with, is plugged with relief valve (5), institute to described housing (1) interference fit
The valve port for the relief valve (5) stated is communicated in pressure-releasing chamber (4), it is characterised in that valve casing (5a) that described relief valve (5) has with
The Anti-isenagage structure for preventing relief valve (5) from departing from housing (1) is provided between housing (1), the inner of described guide pillar (3) is axially opened
Provided with mounting hole (3a), guide pillar spring (6) is installed in described mounting hole (3a), described housing (1) is fixed with to be located at and led
The check valve valve body (7) of the inner top of post (3), described check valve valve body (7) circumferentially offer fuel feed hole (7a) and check valve
The inner of valve body (7) towards guide pillar (3) axially offers the oil-through-hole (7b) for being communicated in fuel feed hole (7a), described guide pillar spring
(6) spring base (8) being supported by check valve valve body (7) the inner, is provided with steel ball spring (9) in described spring base (8),
Described steel ball spring (9) is supported by steel ball (10) and steel ball spring (9) provides elastic force and causes steel ball (10) to have closure all the time
In oil-through-hole (7b) trend.
2. a kind of timing stretcher according to claim 1, it is characterised in that described Anti-isenagage structure includes relief valve
(5) annular groove one that the valve casing (5a) having circumferentially offers, jump ring (11) is arranged with described annular groove one, it is described
Housing (1) on offer for the embedded annular groove two of jump ring (11).
3. a kind of timing stretcher according to claim 1, it is characterised in that described Anti-isenagage structure includes relief valve
(5) with valve casing (5a) with one circle radially protruding convex shoulder, described housing (1) have riveting in the riveting on convex shoulder
Side.
4. a kind of timing stretcher according to claim 1, it is characterised in that described guide pillar (3) is close to its outer end
Side wall offers the oil outlet (3b) for being communicated in mounting hole (3a), is supported by described guide pillar (3) by step tubular
Fuel-displaced cylinder (12), fixed cylinder (13), described fixed cylinder (13) tool are provided between described fuel-displaced cylinder (12) and guide pillar (3) inwall
There is the steel ball for being provided with and being pressed on fuel-displaced cylinder (12) nozzle in the roof (13a) contradicted for guide pillar spring (6) and fixed cylinder (13)
(14) offer elastic force, is provided between the roof (13a) and steel ball (14) of described fixed cylinder (13) causes steel ball (14) to be plugged in
The steel ball and spring (15) of fuel-displaced cylinder (12) nozzle, the roof (13a) of described fixed cylinder (13), which prejudicially offers, is communicated in peace
Dress hole (3a) enters oilhole (13b).
5. a kind of timing stretcher according to claim 1, it is characterised in that described relief valve (5) includes being cylindrical in shape
And the sealing drum (5b) set close to pressure-releasing chamber (4), it is equipped with pressure release fuse between described sealing drum (5b) and valve casing (5a)
(5c), described pressure release fuse (5c) have the bar portion (5d) for stretching into sealing drum (5b), and pressure release fuse (5c) also has a circle footpath
Offer elastic force is provided to the bulge loop (5e) of protrusion, between described pressure release fuse (5c) and valve casing (5a) and causes bulge loop (5e) all the time
With the pressure release spring (5f) for being sealed in sealing drum (5b) nozzle trend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721114210.9U CN207111860U (en) | 2017-09-01 | 2017-09-01 | A kind of timing stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721114210.9U CN207111860U (en) | 2017-09-01 | 2017-09-01 | A kind of timing stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207111860U true CN207111860U (en) | 2018-03-16 |
Family
ID=61574386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721114210.9U Expired - Fee Related CN207111860U (en) | 2017-09-01 | 2017-09-01 | A kind of timing stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207111860U (en) |
-
2017
- 2017-09-01 CN CN201721114210.9U patent/CN207111860U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Tensioning in right time ware Effective date of registration: 20180927 Granted publication date: 20180316 Pledgee: Industrial Commercial Bank of China Ltd. Yuhuan branch Pledgor: YUHUAN KAILI AUTO PARTS CO.,LTD. Registration number: 2018330000293 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 317600 Xiaoshuibu Industrial Zone, Yucheng Street, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: YUHUAN KAILI AUTO PARTS Co.,Ltd. Address before: 317600 Small Waterport Industrial Zone, Zhugang Town, Yuhuan City, Taizhou City, Zhejiang Province Patentee before: YUHUAN KAILI AUTO PARTS CO.,LTD. |
|
| PM01 | Change of the registration of the contract for pledge of patent right | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20190806 Registration number: 2018330000293 Pledgor after: YUHUAN KAILI AUTO PARTS Co.,Ltd. Pledgor before: YUHUAN KAILI AUTO PARTS CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 |