CN110785583B - Locking pin for locking spring of mechanical tensioner and mechanical tensioner - Google Patents
Locking pin for locking spring of mechanical tensioner and mechanical tensioner Download PDFInfo
- Publication number
- CN110785583B CN110785583B CN201780092384.6A CN201780092384A CN110785583B CN 110785583 B CN110785583 B CN 110785583B CN 201780092384 A CN201780092384 A CN 201780092384A CN 110785583 B CN110785583 B CN 110785583B
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- China
- Prior art keywords
- locking pin
- spring
- tensioner
- blocking
- tensioner body
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- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0872—Sliding members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0876—Control or adjustment of actuators
- F16H2007/0878—Disabling during transport
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
Abstract
A mechanical tensioner for locking a locking pin (3) of a spring (2) of the mechanical tensioner and assembling the locking pin (3), the mechanical tensioner comprising a tensioner body (1) and a spring (2) mounted to the tensioner body (1), a fixed spring leg (22) of the spring (2) being fixedly mounted to the tensioner body (1), the locking pin (3) comprising: an insertion portion (38) for insertion into a pin hole (12) of the tensioner body (1) to mount the locking pin (3) to the tensioner body (1); a blocking portion (39) for blocking the free spring leg (23) of the spring (2) so as to hold the spring (2) in a compressed state, wherein the insertion portion (38) and the blocking portion (39) are spaced apart in a compression-expansion direction of the free spring leg (23) in a state in which the locking pin (3) locks the spring (2). The mechanical tensioner assembled with the locking pin (3) reduces the material requirement on the spring (2), is easy to assemble, and has small stress at the pin hole (12) and reduced failure risk.
Description
Technical Field
The present invention relates to a mechanical tensioner in a vehicle engine timing system, and more particularly to a locking pin for locking a spring of a mechanical tensioner and a mechanical tensioner incorporating the locking pin.
Background
As shown in fig. 1A and 1B, presently, mechanical tensioners widely used in chain drive systems for vehicle engines typically include a spring (e.g., torsion spring) 2 and a tensioner body 1. The spring 2 is fitted on the tensioner body 1. The coil 21 of the spring 2 is mounted about the pivot 11 of the tensioner body 1 and can rotate about the pivot 11. The fixed spring leg 22 of the spring 2 extending from the coil 21 is fixedly mounted on the tensioner body 1. The free spring leg 23 of the spring 2, which extends from the coil 21, can be pressed against an engine block (not shown). The torsion force of spring 2 presses tensioner body 1 onto the chain (not shown) of the chain drive system.
The free spring leg 23 of the spring 2 is typically secured with a locking pin 3 for pre-assembly and shipping of the mechanical tensioner. The locking pin 3 generally comprises: an insertion portion 38 that is inserted into the pin hole 12 of the tensioner body 1 in a pre-assembled state of the mechanical tensioner; a blocking portion 39 that blocks the free spring leg 23; and a grip portion 32 connected to the insertion portion 38, the grip portion 32 being used to grip the locking pin 3 when the locking pin 3 is operated and may be formed, for example, in a substantially circular ring shape.
At present, the insertion portion 38 and the blocking portion 39 of the locking pin 3 are straight, i.e. the insertion portion 38 and the blocking portion 39 extend in a straight line. However, since the position of the pin hole 12 of the tensioner body 1 is usually distant from the position of the free spring leg 23 when the spring 2 is not compressed, in order to block the free spring leg 23 with the lock pin 3, it is necessary to compress the free spring leg 23 by a large angle with a high load, and the free spring leg 23 is locked with the blocking portion 39 after the insertion portion 38 of the lock pin 3 is inserted into the pin hole 12.
Since the compression angle of the spring 2 (i.e. the free spring leg 23) is much greater in the preassembled state than in the operating state of the spring 2, the spring 2 must be manufactured in the most severe compression conditions and high loads, which not only makes assembly difficult, but also is detrimental to the proper functioning of parts of the spring 2.
In addition, the material of the tensioner body 1 is preferably plastic, and in this prior art, there are always high stresses at the pin hole 12 of the tensioner body 1, which is detrimental to the quality of the parts and increases the risk of failure.
Another prior art is that the free spring leg 23 of the spring 2 is extended and bent several times so that the extension can reach near the pin hole 12. For example, referring to fig. 2A and 2B, the free spring leg 23 includes a straight portion 231 and a curved portion 232, and a tip end portion 232A of the curved portion 232 is blocked by the blocking portion 39 of the locking pin 3. The straight portion 231 and the tip end portion 232A are spaced apart from each other in the compression-expansion direction of the free spring leg 23 around the coil 21. The tip end portion 232A is closer to the pin hole 12 of the tensioner body 1 than the straight portion 231, and the straight portion 231 is closer to the engine body than the tip end portion 232A. The straight portion 231 is for pressing against the engine body.
The design of the spring is complex, the manufacturing difficulty and the cost are high, and different application scenes need to be designed independently.
Disclosure of Invention
The object of the present invention is to find an effective way to lock the spring to the tensioner body in a stable and rational condition during pre-assembly and transport.
The invention provides a locking pin and a mechanical tensioner equipped with the same, which eliminates an excessive compression angle of a free spring leg in a pre-assembly state, namely a spring locking state, and reduces stress near a pin hole of a tensioner body.
There is provided a locking pin for locking a spring of a mechanical tensioner, the mechanical tensioner comprising a tensioner body and a spring mounted to the tensioner body, a fixed spring leg of the spring being fixedly mounted to the tensioner body, wherein the locking pin comprises:
an insertion portion for insertion into a pin hole of the tensioner body to mount the locking pin to the tensioner body;
a blocking portion for blocking a free spring leg of the spring, thereby holding the spring in a compressed state,
wherein, in a state where the locking pin locks the spring, the insertion portion and the blocking portion are spaced apart in a compression-expansion direction of the free spring leg.
In at least one embodiment, the locking pin further comprises a connecting portion connecting the insertion portion and the blocking portion.
In at least one embodiment, the locking pin is substantially U-shaped, the connecting portion forming a base of the U.
In at least one embodiment, the locking pin is substantially 8-shaped with an open lower portion.
In at least one embodiment, a distance between the insertion portion and a distal end portion of the blocking portion, which is distal from the connection portion, is smaller than a distance between the insertion portion and a proximal end portion of the blocking portion, which is proximal to the connection portion.
In at least one embodiment, the insertion portion and the blocking portion are linear.
In at least one embodiment, the blocking portion is formed with a bend at a position to be in contact with the free spring leg.
In at least one embodiment, the locking pin further comprises a catch, the blocking portion being located between the catch and the insertion portion.
In at least one embodiment, the blocking portion presents a bend.
In at least one embodiment, the mechanical tensioner is for tensioning a chain of a chain drive system, and the locking pin is for locking the spring at a first amount of compression that is greater than a second amount of compression of the spring when the mechanical tensioner is installed in the chain drive system.
In at least one embodiment, the locking pin is bent from a single metal wire.
The invention also provides a mechanical tensioner assembled with a locking pin, comprising a tensioner body and a spring mounted to the tensioner body, a fixed spring leg of the spring being fixedly mounted to the tensioner body, wherein,
the insertion portion of the locking pin is inserted into the pin hole of the tensioner body, and the blocking portion of the locking pin blocks the free spring leg of the spring, thereby holding the spring in a compressed state.
In at least one embodiment, the tensioner body is made of plastic.
In at least one embodiment, the spring is a torsion spring.
In at least one embodiment, the free spring leg extends beyond the tensioner body.
It should be understood that the "the insertion portion and the blocking portion are spaced in the compression-expansion direction of the free spring leg in the state where the locking pin locks the spring" mentioned in the present application includes both the entire insertion portion and the entire blocking portion being spaced in the compression-expansion direction, and at least the portion of the insertion portion inserted and received in the pin hole and the portion of the blocking portion contacting the free spring leg being spaced in the compression-expansion direction.
In the locking pin and the mechanical tensioner of the present invention, the insertion portion and the blocking portion are spaced apart in the compression-expansion direction of the free spring leg in a state where the locking pin locks the spring. The amount of compression of the spring in the preassembled condition is reduced, or closer to the amount of compression of the spring when the mechanical tensioner is installed in the chain drive system, than if the insert and stop extended in a straight line. Thus, the design of the spring can be simplified, the material requirements for the spring are reduced, and the mechanical tensioner can be easily assembled. Meanwhile, the stress at the pin hole is small, and the failure risk is reduced.
Drawings
Fig. 1A and 1B show schematic views of a locking pin for locking a free spring leg and a mechanical tensioner incorporating the locking pin according to the prior art.
Fig. 2A and 2B show a schematic of another spring and a mechanical tensioner including the spring and assembled with the locking pin of fig. 1A according to the prior art.
Fig. 3A and 3B show schematic views of a locking pin for locking a free spring leg and a mechanical tensioner incorporating the locking pin according to a first embodiment of the present invention.
Fig. 4A and 4B show schematic views of a locking pin for locking a free spring leg and a mechanical tensioner incorporating the locking pin according to a second embodiment of the present invention.
Fig. 5A and 5B show schematic views of a locking pin for locking a free spring leg and a mechanical tensioner incorporating the locking pin according to a third embodiment of the present invention.
Description of the reference numerals
1 tensioner body, 11 pivots, 12 pin holes, 2 spring, 21 coil, 22 fixed spring leg, 23 free spring leg, 231 straight part of free spring leg, 232 curved part of free spring leg, end of 232A curved part, 3 locking pin, 32 catch, 37 connection part, 38 insertion part, 39 blocking part.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings.
First embodiment
Referring to fig. 3A and 3B, the mechanical tensioner of the present embodiment includes a spring (e.g., torsion spring) 2 and a tensioner body 1 made of, for example, plastic. The spring 2 is fitted on the tensioner body 1. The coil 21 of the spring 2 is mounted about the pivot 11 of the tensioner body 1 and can rotate about the pivot 11. The fixed spring leg 22 of the spring 2 extending from the coil 21 is fixedly mounted on the tensioner body 1. The free spring leg 23 of the spring 2, which extends from the coil 21, extends out of the tensioner body 1 and is pressed against the engine block (not shown) when the tensioner is in an operating state. The part of the tensioner body 1 on the opposite side of the fixed spring leg 22 from the free spring leg 23 can be pressed against the chain (not shown) of the chain drive system. The torsional force of spring 2 presses tensioner body 1 onto the chain of the chain drive system.
The locking pin 3 includes: an insertion portion 38 inserted into the pin hole 12 of the tensioner body 1 in a pre-assembled state of the mechanical tensioner; a blocking portion 39 which blocks the free spring leg 23; and a connecting portion 37 connecting the insertion portion 38 and the stopper portion 39, the connecting portion 37 also serving as a grasping portion for grasping the lock pin 3 when the lock pin 3 is operated. The locking pin 3 locks the spring 2 at a first amount of compression, which is preferably greater than a second amount of compression of the spring 2 when the mechanical tensioner is mounted to the chain drive system.
The locking pin 3 is substantially U-shaped, and the connecting portion 37 constitutes the bottom of the U.
To further prevent the free spring leg 23 from disengaging from the stop 39, the distance D1 between the distal ends of the insertion portion 38 and the stop 39, which are distal from the connecting portion 37, may be less than the distance D2 between the proximal ends of the insertion portion 38 and the stop 39, which are proximal to the connecting portion 37. The case where D1 is smaller than D2 may be satisfied only in the case where the locking pin 3 is not mounted to the mechanical tensioner, and preferably the case where D1 is smaller than D2 is also satisfied after the locking pin is mounted to the mechanical tensioner.
The lock pin 3 of the present embodiment may be formed by bending one metal wire.
As described above, the insertion portion 38 and the blocking portion 39 of the locking pin 3 are not in line, but spaced apart from each other in the compression-expansion direction (see double arrow F in fig. 3B) of the free spring leg 23 around the coil 21. In this way, the amount of compression of the spring 2 in the pre-assembled state is reduced, or the amount of compression of the spring 2 in the pre-assembled state is closer to the amount of compression of the spring 2 when the mechanical tensioner is mounted to the chain drive system, than if the insert and the blocking portion were to extend in a straight line. In this way, the design of the spring 2 can be simplified, the material requirements for the spring 2 are reduced, and the assembly of the mechanical tensioner is facilitated. Meanwhile, the stress at the pin hole 12 is small, and the failure risk is reduced.
Second embodiment
A locking pin and a mechanical tensioner assembled with the locking pin according to a second embodiment of the present invention will be described below with reference to fig. 4A and 4B. The same or similar structures as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
The structure of the lock pin 3 in the present embodiment is different from that of the lock pin 3 in the first embodiment.
In the present embodiment, the lock pin 3 includes: an insertion portion 38 inserted into the pin hole 12 of the tensioner body 1 in a pre-assembled state of the mechanical tensioner; a blocking portion 39 that blocks the free spring leg 23; and a connecting portion 37 connecting the insertion portion 38 and the stopper portion 39, the connecting portion 37 also serving as a grasping portion for grasping the lock pin 3 when the lock pin 3 is operated.
The entire locking pin 3 is shaped like an "8" with its lower portion not sealed, and the connecting portion 37 is formed in a substantially circular ring shape. The insertion portion 38 and the blocking portion 39 of the locking pin 3 are not in line but are spaced apart from one another in the compression-expansion direction of the free spring leg 23 around the coil 21.
The lock pin 3 of the present embodiment may be formed by bending one metal wire as in the first embodiment.
The other structures of the present embodiment are basically the same as those of the first embodiment. The present embodiment can obtain the same effects as the first embodiment.
Third embodiment
A locking pin and a mechanical tensioner assembled with the locking pin according to a third embodiment of the present invention will be described below with reference to fig. 5A and 5B. The same or similar structures as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
The structure of the lock pin 3 in the present embodiment is different from that of the lock pin 3 in the first embodiment.
In the present embodiment, the lock pin 3 includes: an insertion portion 38 that is inserted into a pin hole on the tensioner body 1 in a pre-assembled state of the mechanical tensioner; a blocking portion 39 that blocks the free spring leg 23; and a grip portion 32 connected to the stopper portion 39, the grip portion 32 having a substantially annular shape and gripping the lock pin 3 when the lock pin 3 is operated.
A stop 39 is located between the insert 38 and the grip 32. The blocking portion 39 is formed in a curved shape so that the top of the blocking portion 39 (i.e., a portion for contacting the free spring leg 23) and the insertion portion 38 are not in a straight line but are spaced apart from each other in the compression-expansion direction of the free spring leg 23 around the coil 21.
The lock pin 3 of the present embodiment may be formed by bending one metal wire as in the first embodiment.
The other structures of the present embodiment are basically the same as those of the first embodiment. The present embodiment can obtain the same effects as the first embodiment.
The locking pin of the present invention provides an effective solution for spring retention, i.e., the spring can be easily and qualitatively preassembled on the tensioner body with a non-linear locking pin, with the result that the risk of failure is reasonably reduced.
Of course, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various changes and modifications to the above-described embodiments of the present invention without departing from the scope of the present invention under the teaching of the present invention.
(1) In the above embodiment, the structure of the tensioner body 1, including the position of the pin hole 12, is not all the same, however, this does not hinder the application of the locking pin of the present invention. The locking pin of one embodiment can also be applied to the tensioner body 1 of other embodiments in principle.
(2) The insertion portion and the stopper portion may each be linear or non-linear. For example, the blocking portion 39 in the first and second embodiments may include a similar bend for receiving the free spring leg 23 as the blocking portion 39 of the third embodiment. This further prevents the free spring leg 23 from disengaging from the stop 39.
Claims (15)
1. A locking pin for locking a spring of a mechanical tensioner, the mechanical tensioner comprising a tensioner body and a spring mounted to the tensioner body, a fixed spring leg of the spring being fixedly mounted to the tensioner body, characterized in that the locking pin comprises:
an insertion portion for insertion into a pin hole of the tensioner body to mount the locking pin to the tensioner body;
a blocking portion for blocking a free spring leg of the spring, thereby holding the spring in a compressed state,
wherein, in a state where the locking pin locks the spring, the insertion portion and the blocking portion are spaced apart in a compression-expansion direction of the free spring leg.
2. The locking pin of claim 1, further comprising a connecting portion connecting the insertion portion and the blocking portion.
3. The locking pin of claim 2, wherein said locking pin is generally U-shaped, said connecting portion forming a bottom of said U.
4. The locking pin of claim 2, wherein said locking pin is substantially 8-shaped with an open lower portion.
5. The locking pin according to any one of claims 2 to 4, characterized in that a distance between the insertion portion and a distal end portion of the blocking portion that is distal from the connecting portion is smaller than a distance between the insertion portion and a proximal end portion of the blocking portion that is proximal to the connecting portion.
6. A locking pin according to any one of claims 1 to 5, characterised in that the insertion portion and the blocking portion are rectilinear.
7. Locking pin according to any of claims 1-5, characterized in that the blocking part is formed with a bend at the location to be in contact with the free spring leg.
8. The locking pin of claim 1, further comprising a catch, the blocking portion being located between the catch and the insertion portion.
9. Locking pin according to claim 8, characterized in that the blocking part exhibits a curvature.
10. The locking pin of any one of claims 1 to 9, wherein the mechanical tensioner is for tensioning a chain of a chain drive system, the locking pin being for locking the spring at a first amount of compression that is greater than a second amount of compression of the spring when the mechanical tensioner is installed in the chain drive system.
11. Locking pin according to one of claims 1 to 10, characterized in that it is bent from one metal wire.
12. A mechanical tensioner assembled with a locking pin, comprising a tensioner body and a spring mounted to the tensioner body, a fixed spring leg of the spring being fixedly mounted to the tensioner body,
the locking pin according to any one of claims 1 to 11, the insertion portion of the locking pin being inserted into a pin hole of the tensioner body, the blocking portion of the locking pin blocking a free spring leg of the spring, thereby retaining the spring in a compressed state.
13. The mechanical tensioner assembled with a locking pin of claim 12, wherein the tensioner body is made of plastic.
14. A mechanical tensioner assembled with a locking pin as claimed in claim 12 or 13, characterised in that the spring is a torsion spring.
15. A mechanical tensioner assembled with a locking pin according to any one of claims 12 to 14, characterised in that the free spring leg protrudes out of the tensioner body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/104909 WO2019061464A1 (en) | 2017-09-30 | 2017-09-30 | Locking pin for use with locking spring of locking mechanical tensioner and mechanical tensioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110785583A CN110785583A (en) | 2020-02-11 |
| CN110785583B true CN110785583B (en) | 2022-09-02 |
Family
ID=65903398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780092384.6A Active CN110785583B (en) | 2017-09-30 | 2017-09-30 | Locking pin for locking spring of mechanical tensioner and mechanical tensioner |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110785583B (en) |
| DE (1) | DE112017008106T5 (en) |
| WO (1) | WO2019061464A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7311781B2 (en) * | 2019-11-06 | 2023-07-20 | 株式会社椿本チエイン | tensioner lever |
| JP7440738B2 (en) | 2019-11-21 | 2024-02-29 | 株式会社椿本チエイン | tensioner lever |
| JP7440764B2 (en) * | 2020-05-14 | 2024-02-29 | 株式会社椿本チエイン | tensioner lever |
| DE102020120610A1 (en) | 2020-08-05 | 2022-02-10 | Schaeffler Technologies AG & Co. KG | Oil pump chain tensioner |
| JP2023026930A (en) * | 2021-08-16 | 2023-03-01 | 株式会社椿本チエイン | tensioner lever |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084859A (en) * | 1994-06-17 | 1996-01-12 | Nippon Seiko Kk | Automatic tensioner |
| CN204186901U (en) * | 2014-10-28 | 2015-03-04 | 绵阳富临精工机械股份有限公司 | A kind of motor tooth bar non-return stretcher |
| CN105927720A (en) * | 2015-02-27 | 2016-09-07 | 株式会社椿本链条 | Tensioner Lever |
| CN205859072U (en) * | 2016-08-15 | 2017-01-04 | 博格华纳汽车零部件(宁波)有限公司 | Hydraulic tensioner |
| CN106917852A (en) * | 2015-12-24 | 2017-07-04 | 株式会社椿本链条 | Nutted rod |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001159454A (en) * | 1999-11-30 | 2001-06-12 | Tsubakimoto Chain Co | Tensioner with plunger stopper pin |
| DE102005003744A1 (en) * | 2005-01-27 | 2006-08-10 | Schaeffler Kg | Tensioning device for traction element drive such as belt has openings in tensioner housing and piston for fitting of members of U-shaped cotter-pin |
| DE202007008685U1 (en) * | 2007-06-21 | 2007-08-23 | Schaeffler Kg | Eccentric tensioner, for a motor drive belt, has a torsion spring to tense the working eccentric and a locking mechanism to hold the running disk at all eccentric swing angles |
| CN205824069U (en) * | 2016-06-22 | 2016-12-21 | 玉环常捷机械有限公司 | A kind of engine hydraulic stretcher |
-
2017
- 2017-09-30 DE DE112017008106.8T patent/DE112017008106T5/en not_active Ceased
- 2017-09-30 WO PCT/CN2017/104909 patent/WO2019061464A1/en active Application Filing
- 2017-09-30 CN CN201780092384.6A patent/CN110785583B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084859A (en) * | 1994-06-17 | 1996-01-12 | Nippon Seiko Kk | Automatic tensioner |
| CN204186901U (en) * | 2014-10-28 | 2015-03-04 | 绵阳富临精工机械股份有限公司 | A kind of motor tooth bar non-return stretcher |
| CN105927720A (en) * | 2015-02-27 | 2016-09-07 | 株式会社椿本链条 | Tensioner Lever |
| CN106917852A (en) * | 2015-12-24 | 2017-07-04 | 株式会社椿本链条 | Nutted rod |
| CN205859072U (en) * | 2016-08-15 | 2017-01-04 | 博格华纳汽车零部件(宁波)有限公司 | Hydraulic tensioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110785583A (en) | 2020-02-11 |
| DE112017008106T5 (en) | 2020-07-02 |
| WO2019061464A1 (en) | 2019-04-04 |
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