CN218542350U

CN218542350U - Camshaft phase adjuster

Info

Publication number: CN218542350U
Application number: CN202223063042.9U
Authority: CN
Inventors: 荣涛; 陈金勇; 陈思豪; 鲍恤杰; 钟光鑫
Original assignee: Zhejiang Master Injection System Co ltd
Current assignee: Zhejiang Master Injection System Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-02-28
Anticipated expiration: 2032-11-18

Abstract

A camshaft phase adjuster, characterized in that: a locking pin hole is formed in the side edge of the stator, and a locking pin is arranged in the locking pin hole; the locking pin groove has been seted up to the lateral surface of rotor, and locking pin inslot fixed mounting has the locking pin boss with locking pin looks adaptation, and locking pin boss is the same with locking pin hardness. Scheme more than adopting is provided with a locking key seat in the locking key inslot, and when the locking round pin got into or left the locking key inslot, the locking round pin contacted friction with the locking key seat, avoided and the rotor between the direct contact, simultaneously because the locking key seat keeps the same hardness with the locking round pin, the wearing and tearing that consequently the friction produced are little, and scheme more than adopting need not to carry out local quenching to the rotor, and not only processing production is more convenient, stable in structure moreover, and life is high.

Description

Camshaft phase adjuster

Technical Field

The utility model relates to an engine camshaft phase place adjustment technical field, concretely relates to camshaft phase place regulator.

Background

The cam phase regulator is an executor for controlling the relative rotation of cams in the structure of variable intake cam phase regulating system for internal combustion engine and includes mainly stator and rotor. The rotor is used for controlling the adjusting angle of the rotor through a lock pin mechanism on the rotor so as to achieve the effect of adjusting the angle of the valve through a valve phase adjusting mechanism. When the valve phase adjusting mechanism does not work, the locking pin mechanism fixes the relative position of the rotor and the chain wheel or the rear cover and other parts. When the valve phase adjusting mechanism starts to work, the hydraulic oil pushes a locking pin (stop pin) to enable the rotor and other components to be unlocked. The rotor drives the camshaft to rotate under the pushing of the hydraulic oil, so that the function of adjusting the phase of the valve is realized.

The existing cam phase adjuster is provided with a stop pin groove on a chain wheel or on a cover plate, a stop pin hole is designed on a rotor, a plug and a stop pin are assembled in the lock pin hole, and the relative position of the rotor and the chain wheel or a rear cover and other parts is fixed. Due to the structure, the concentricity is not well controlled when the plug hole and the stop pin hole are machined, the assembly is directly influenced by the concentricity, the locking quality of the stop pin is influenced, and the stop pin is easy to open in an inflexible or locked and cannot be opened in a low-pressure state. If the stop pin groove is formed on the cover plate, the thickness of the cover plate needs to be thickened, and the cost is not increased slightly.

In order to solve the above technical problems, a chinese utility model patent (CN 206319922U) discloses a novel camshaft phase adjuster, which is provided with a detent pin groove communicating with an oil hole on a side surface of a rotor; a stop pin hole is formed in the side edge of the stator; a stop pin is arranged in the stop pin hole; the outer end of the stop pin is provided with a clamp spring; the snap spring is arranged on the inner wall of the stop pin hole and is arranged in a snap spring groove used for preventing the stop pin from popping out of the stop pin hole. The processing is convenient, the precision is high, and the response mechanism is more sensitive.

However, the above camshaft phase adjuster has the following problems:

1. when the stop pin works, the stop pin and the stop pin groove on the side surface of the rotor can be in contact and friction for a long time, and the stop pin and the rotor have different hardness, so that the stop pin is easy to wear and damage and has short service life.

2. The stop pin passes through the jump ring spacing, and the jump ring groove processing that not only is used for installing the jump ring is inconvenient, and the jump ring installation is inconvenient, and the unstable structure moreover, when hydraulic oil pressure was too big, deviate from easily and lead to camshaft phase regulator whole inefficacy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a camshaft phase regulator.

The utility model discloses the technical scheme who adopts: a camshaft phase adjuster comprises a stator, a rotor, a front cover and a rear cover; the rotor is arranged in the stator, and the front cover and the rear cover are respectively arranged at two ends of the stator; a locking pin hole is formed in the side edge of the stator, and a locking pin is arranged in the locking pin hole; the outer side surface of the rotor is provided with a locking pin groove, a locking pin seat matched with the locking pin is fixedly installed in the locking pin groove, and the hardness of the locking pin seat is the same as that of the locking pin.

The rotor locking device is characterized in that a locking pin spring seat and a spring are further arranged in the locking pin hole, the locking pin spring seat is fixedly installed in the locking pin hole, and two ends of the spring are respectively abutted against the locking pin spring seat and the locking pin to provide elastic driving force towards the rotor direction for the locking pin.

The spring positioning groove is formed in one end of the locking pin, the second spring positioning groove is formed in the spring seat of the locking pin, and the two ends of the spring are arranged in the spring positioning groove and the second spring positioning groove respectively.

The outer ring of the locking pin spring seat is formed with a circle of annular positioning groove, the stator is inserted with the positioning pin, and the positioning pin is inserted into the annular positioning groove and is in spacing fit with the locking pin spring seat.

The locating pin is equipped with two, and sets up respectively in the both sides of locking pin spring holder.

An annular limiting step is formed in the inner end of the locking pin hole, and the locking pin is T-shaped and is in limiting fit with the annular limiting step.

The rotor is arranged in the stator and comprises a rotating body and a plurality of blades which are uniformly distributed in the circumferential direction on the outer ring of the rotating body; a first sealing scraper blade is formed at the end part of the separation boss, and the first sealing scraper blade is in sealing fit with the rotating body; the blades are correspondingly arranged in the oil cavity, second sealing scraping blades are formed at the end parts of the blades, and the second sealing scraping blades are in sealing fit with the inner wall of the stator.

Spring assemblies are further arranged on the separating bosses and the side walls of the blades.

The utility model has the advantages that: scheme more than adopting is provided with a locking key seat in the locking key inslot, and when the locking round pin got into or left the locking key inslot, the locking round pin contacted friction with the locking key seat, avoided and the rotor between the direct contact, simultaneously because the locking key seat keeps the same hardness with the locking round pin, the wearing and tearing that consequently the friction produced are little, and scheme more than adopting need not to carry out local quenching to the rotor, and not only processing production is more convenient, stable in structure moreover, and life is high.

Drawings

Fig. 1 is a schematic structural diagram of a camshaft phase adjuster according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a camshaft phase adjuster according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a camshaft phase adjuster according to an embodiment of the present invention.

Fig. 4 is an enlarged schematic view of a point a in fig. 3.

Fig. 5 is a schematic structural diagram of a two-camshaft phase adjuster according to an embodiment of the present invention.

Fig. 6 is an exploded schematic view of a two-camshaft phase adjuster according to an embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of a two-camshaft phase adjuster according to an embodiment of the present invention.

Fig. 8 is an enlarged schematic view of B in fig. 7.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Example one

As shown in fig. 1-4, a camshaft phase adjuster comprises a stator 1, a rotor 2, a front cover 3, and a rear cover 4, wherein the rotor 2 is installed in the stator 1, the front cover 3 and the rear cover 4 are respectively installed at two ends of the stator 1, and a sprocket 5 is integrally formed outside the front cover 3.

The stator 1 is hollow in the middle, 3 circumferentially uniformly distributed partition bosses 13 are integrally formed on the inner wall of the stator 1, oil chambers 14 are formed between the adjacent partition bosses 13, and the rotor 2 is installed in the stator 1 and comprises a rotating body 22 and a plurality of circumferentially uniformly distributed blades 23 on the outer ring of the rotating body 22. Wherein, a first sealing scraper blade 15 is formed at the end part of the separation boss 13, and the first sealing scraper blade 15 is kept in sealing fit with the rotating body 22; the blade 23 is correspondingly arranged in the oil cavity 14, a second sealing scraper 24 is formed at the end part of the blade 23, the second sealing scraper 24 is in sealing fit with the inner wall of the stator, the oil cavity 14 is divided into two parts by the blade 23 to form an advance cavity and a retard cavity which are independent and closed, an advance oil channel and a retard oil channel are arranged on the rotating body 22, the advance oil channel is communicated with the advance cavity, the retard oil channel is communicated with the retard cavity, and a first sealing scraper 15 and a second sealing scraper 24 are respectively arranged at the end parts of the partition boss 13 and the blade 23, so that the stable rotating action of the rotor is ensured, the reliable sealing with the inner wall of the stator can be ensured, and the oil mixing risk is avoided.

Furthermore, the separating boss 13 and the side wall of the blade 23 are also provided with spring assemblies, and automatic elastic compensation can be performed through the spring assemblies, so that the rotor action is more stable and reliable.

Locking pinhole 11 has been seted up to the side of stator 1, install locking round pin 6, locking round pin spring holder 8, spring 9 in the locking pinhole 11. An annular limiting step 12 is formed at the inner end of the locking pin hole 11, the locking pin 6 is T-shaped, can penetrate through the annular limiting step 12, and can be in limiting fit with the annular limiting step 12; the locking pin spring seat 8 is fixedly installed in the locking pin hole 11, and two ends of the spring 9 are respectively abutted to the locking pin spring seat 8 and the locking pin 6, so that elastic driving force towards the direction of the rotor 2 is provided for the locking pin 6.

Further, 6 one end of locking pin is formed with spring positioning groove 61, locking pin spring holder 8 is formed with second spring positioning groove 81, the spring 9 both ends set up respectively in spring positioning groove 61 and second spring positioning groove 81, guarantee that spring 9 reliably fixes a position, ensure that spring 9 stably compresses and resets.

Further, 8 outer lanes of locking pin spring holder are formed with round annular positioning groove 82, be formed with locating pin hole 17 on the stator 1, the interpolation has locating pin 10 in the locating pin hole 17, and when back lid 4 was installed to stator 1 on, just in time can compress tightly fixedly locating pin 10, and just in time insert annular positioning groove 82 behind the locating pin 10 insertion locating pin hole 17 in with 8 limit fit of locking pin spring holder. Realize the fixed mounting of locking pin spring holder 8 through locating pin 10, not only the equipment is convenient, and stable in structure is reliable moreover. The two positioning pins 10 are arranged and are respectively arranged on two sides of the locking pin spring seat 8, so that the structure is further stable and reliable.

The outer side wall of the rotor 2 is provided with a locking pin groove 21, and a locking pin seat 7 matched with the locking pin 6 is fixedly installed in the locking pin groove 21. The locking pin seat 7 and the rotor 2 are arranged in a split mode and can be independently quenched to achieve the same hardness as that of the locking pin 6, and the locking pin seat 7 and the locking pin groove 21 can be fixedly connected stably through interference fit.

When the phase adjusting mechanism of the camshaft phase adjuster does not work, the locking pin 6 is inserted into the locking pin seat 7 of the locking pin groove 21 under the action of the spring 9, so that the rotor 2 is kept fixedly locked; when the phase adjusting mechanism of the camshaft phase adjuster works, hydraulic oil can enter the locking pin groove 21, the hydraulic oil can push the locking pin 6 to be separated from the locking pin groove 21 by overcoming the elastic force of the spring 9, the rotor 2 can rotate under the pushing of the hydraulic oil after being unlocked, and the rotor 2 can drive the camshaft to rotate, so that the phase adjusting function is realized.

Compared with the conventional camshaft phase adjuster, the camshaft phase adjuster has the following advantages that:

1. the locking pin groove is internally provided with the locking pin seat, when the locking pin enters or leaves the locking pin groove, the locking pin is in contact friction with the locking pin seat, so that the direct contact between the locking pin and the rotor is avoided, and meanwhile, the locking pin seat and the locking pin keep the same hardness, so that the abrasion caused by friction is small, and by adopting the scheme, the rotor does not need to be locally quenched, so that the rotor is more convenient to process and produce, stable in structure and long in service life;

2. the locking pin spring seat is positioned by the two positioning pins, so that the assembly is convenient, and the structure is more stable and reliable.

Example two

As shown in fig. 5 to 8, a camshaft phase adjuster has substantially the same structure as the first embodiment except that the partition boss and the vane side wall are not provided with a spring assembly.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described according to the above embodiments, the inventive idea is not limited to this embodiment, and any application of the inventive idea is also included in the scope of the patent right protection.

Claims

1. A camshaft phase adjuster comprises a stator (1), a rotor (2), a front cover (3) and a rear cover (4); the rotor (2) is arranged in the stator (1), and the front cover (3) and the rear cover (4) are respectively arranged at two ends of the stator (1); a locking pin hole (11) is formed in the side edge of the stator (1), and a locking pin (6) is installed in the locking pin hole (11);

the method is characterized in that: the locking pin groove (21) has been seted up to the lateral surface of rotor (2), fixed mounting has locking key seat (7) with locking round pin (6) looks adaptation in locking key groove (21), just locking key seat (7) are the same with locking round pin (6) hardness.

2. The camshaft phase adjuster according to claim 1, wherein: still be equipped with locking round pin spring holder (8), spring (9) in locking pinhole (11), locking round pin spring holder (8) fixed mounting is in locking pinhole (11), spring (9) both ends respectively with locking round pin spring holder (8), locking round pin (6) looks butt, provide an elastic drive power towards rotor (2) direction for locking round pin (6).

3. The camshaft phase adjuster according to claim 2, wherein: locking round pin (6) one end is formed with spring positioning groove (61), locking round pin spring holder (8) are formed with second spring positioning groove (81), spring (9) both ends set up respectively in spring positioning groove (61) and second spring positioning groove (81).

4. The camshaft phase adjuster according to claim 2, wherein: locking round pin spring holder (8) outer lane is formed with round annular positioning groove (82), stator (1) has inserted locating pin (10), just locating pin (10) insert in annular positioning groove (82) with locking round pin spring holder (8) spacing cooperation.

5. The camshaft phase adjuster according to claim 4, wherein: the number of the positioning pins (10) is two, and the two positioning pins are respectively arranged on two sides of the locking pin spring seat (8).

6. The camshaft phase adjuster according to claim 2, wherein: the inner end of the locking pin hole (11) is provided with an annular limiting step (12), and the locking pin (6) is T-shaped and is in limiting fit with the annular limiting step (12).

7. The camshaft phase adjuster according to claim 1, wherein: the inner wall of the stator (1) is integrally provided with a plurality of circumferentially and uniformly distributed separation bosses (13), oil cavities (14) are formed between adjacent separation bosses (13), and the rotor (2) is arranged in the stator (1) and comprises a rotating body (22) and a plurality of circumferentially and uniformly distributed blades (23) on the outer ring of the rotating body (22);

a first sealing scraping blade (15) is formed at the end part of the separation boss (13), and the first sealing scraping blade (15) is kept in sealing fit with the rotating body (22); the blade (23) is correspondingly arranged in the oil cavity (14), a second sealing scraping blade (24) is formed at the end part of the blade (23), and the second sealing scraping blade (24) is in sealing fit with the inner wall of the stator.

8. The camshaft phase adjuster according to claim 7, wherein: spring assemblies are further arranged on the side walls of the separation boss (13) and the blade (23).