CN110701253A

CN110701253A - Phaser adjusting device

Info

Publication number: CN110701253A
Application number: CN201911015690.7A
Authority: CN
Inventors: 陈鹏; 邓猛; 胡荣; 蒋长路; 胡胜龙
Original assignee: Mianyang Fulin Precision Machinery Co Ltd
Current assignee: Mianyang Fulin Precision Machinery Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-01-17

Abstract

The invention provides a phaser regulating device which comprises a shell, an input shaft and a driving gear (4), wherein the input shaft comprises a central shaft (6), an elastic element (7) and an eccentric sleeve (8), a movable connecting structure capable of rotating relatively is formed between the central shaft (6) and the shell, a movable connecting structure capable of rotating relatively is formed between the eccentric sleeve (8) and the driving gear (4), the elastic element (7) is arranged between the central shaft (6) and the eccentric sleeve (8), and a relative rotating structure is formed between the eccentric sleeve (8) and the central shaft (6). When the phaser collides at the phase adjustment limit position due to factors such as motor runaway and the like, kinetic energy from the motor can be absorbed and converted into elastic potential energy through the elastic element, so that the elastic input shaft structure absorbs energy generated by collision, the impact of the phaser at the phase adjustment limit position is reduced, and the service life of the phaser and the motor is prolonged.

Description

Phaser adjusting device

Technical Field

The invention relates to the field of structural design of phasers, in particular to a phaser adjusting device driven by a motor.

Background

The existing phaser adjusting device driven by a motor consists of a driving motor and a phaser, wherein the driving motor is used as a power source of the phaser, and the phaser is a planetary speed reducer and is provided with a phase adjusting angle limit.

When the phase adjustment is carried out, the driving motor converts electric energy into kinetic energy according to the instruction of the control system, and the angle of the camshaft relative to the crankshaft is controlled after the speed of the phaser is reduced. However, when the driving motor is abnormally operated or the driving motor is out of control, the phaser collides with the limit position of the phase adjustment, so that large energy is generated in a short time, the phaser and the driving motor are easily damaged unrecoverably, and the service life of the phaser and the driving motor is shortened.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: to solve the problems in the prior art, the phase adjuster adjusting device is provided to reduce the impact of a phase adjuster at the phase adjusting limit position.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: the utility model provides a phaser adjusting device, includes casing, input shaft and driving gear, the input shaft form relative pivoted swing joint structure with casing, driving gear respectively, the input shaft include center pin, elastic element and eccentric cover, center pin and casing between form relative pivoted swing joint structure, eccentric cover and driving gear between form relative pivoted swing joint structure, elastic element set up between center pin and eccentric cover, and form relative rotating-structure between eccentric cover and the center pin.

Preferably, a first connecting pin is formed on the elastic element, an axial hole is formed on the central shaft, and a clamping structure is formed between the first connecting pin and the axial hole.

Preferably, a second connecting pin is formed on the elastic element, a radial notch is formed on the eccentric sleeve, and a clamping structure is formed between the second connecting pin and the radial notch.

Preferably, an eccentric structure is formed between an outer circle of the eccentric sleeve on the eccentric sleeve and an inner hole of the eccentric sleeve, an eccentric structure is formed between the shell and the driving gear, and the eccentric distance between the outer circle of the eccentric sleeve and the inner hole of the eccentric sleeve is equal to the eccentric distance between the shell and the driving gear.

Preferably, the eccentric sleeve is sleeved on the central shaft.

Preferably, a meshing transmission structure is formed between the driving gear and the driven gear, and a relative rotation structure is formed between the driven gear and the driving wheel.

Preferably, a limit boss is formed on the driving wheel, a limit notch is formed on the driven gear, the limit boss and the limit notch are matched to form a relative rotation structure, and the rotation amplitude of the driving wheel relative to the driven gear is limited by the limit notch.

Preferably, the driving gear on form the external tooth, driven gear on form the internal tooth, driving gear and driven gear between form the internal gearing transmission structure, and the number of external tooth teeth on the driving gear is less than the number of internal tooth teeth on the driven gear.

Preferably, the casing includes drive wheel and apron, apron and drive wheel between form the fixed connection structure of detachable through the screw, and form axial assembly space between apron and the drive wheel.

Preferably, a limit step is formed on the driving wheel, and an axial assembly space is formed between the limit step and the cover plate.

Compared with the prior art, the invention has the beneficial effects that: because the elastic element in the input shaft is arranged between the central shaft and the eccentric sleeve and forms a relative rotation structure between the eccentric sleeve and the central shaft, the input shaft is made to be an elastic input shaft structure, when the phaser is normally adjusted, the elastic element is used for transmitting kinetic energy output by the motor, when the phaser collides at the limit position of phase adjustment due to factors such as motor runaway and the like, the kinetic energy from the motor can be absorbed and converted into elastic potential energy through the elastic element, so that the elastic input shaft structure absorbs energy generated by collision, the impact suffered by the phaser and the motor is relieved, particularly the impact of the phaser at the limit position of phase adjustment is relieved, the phaser and the motor are effectively prevented from generating impact damage, and the service life of the phaser and the motor is prolonged.

Drawings

Fig. 1 is a sectional view showing the construction of a phaser adjuster mechanism of the present invention.

Fig. 2 is an exploded view of a phaser adjustment mechanism according to the present invention.

Fig. 3 is a schematic configuration diagram of the housing in fig. 1.

Fig. 4 is a schematic diagram of the engagement of the driving wheel and the driven gear.

Fig. 5 is a schematic structural view of the driving wheel in fig. 4.

Fig. 6 is a schematic structural view of the driven gear in fig. 4.

Fig. 7 is an exploded view of the configuration of the input shaft of fig. 1.

Fig. 8 is a structural view of the center shaft in fig. 7.

Fig. 9 is a schematic structural diagram of the elastic element in fig. 7.

Fig. 10 is a schematic structural view of the eccentric sleeve of fig. 7.

Part label name in the figure: 1-motor, 2-motor shaft, 3-drive wheel, 4-drive gear, 5-driven gear, 6-central shaft, 7-elastic element, 8-eccentric sleeve, 9-connecting plate, 10-first bearing, 11-cover plate, 12-screw, 13-bolt, 14-housing axis, 15-cam shaft, 16-second bearing, 17-drive gear axis, 31-limit step, 32-limit boss, 51-limit notch, 61-axial hole, 71-first connecting pin, 72-second connecting pin, 81-radial notch, 82-eccentric sleeve excircle, 83-eccentric sleeve inner hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The phaser adjusting device shown in fig. 1 and 2 mainly comprises a housing, an input shaft, a driving gear 4, a driven gear 5 and a connecting plate 9, wherein the housing is of a hollow cavity structure, preferably adopts the hollow cavity structure shown in fig. 3, and specifically comprises a driving wheel 3 and a cover plate 11, the cover plate 11 and the driving wheel 3 form a detachable fixed connection structure through a screw 12, and an axial assembly space is formed between the cover plate 11 and the driving wheel 3. The structure of the input shaft is shown in fig. 7, and comprises a central shaft 6, an elastic element 7 and an eccentric sleeve 8, wherein the elastic element 7 is arranged between the central shaft 6 and the eccentric sleeve 8, and a relative rotation structure is formed between the eccentric sleeve 8 and the central shaft 6. Specifically, a movable connection structure capable of rotating relatively is formed between the central shaft 6 and the cover plate 11 through a first bearing 10, and a movable connection structure capable of rotating relatively is formed between the eccentric sleeve 8 and the driving gear 4 through a second bearing 16, so that the input shaft and the housing and the driving gear 4 form a movable connection structure capable of rotating relatively respectively.

In order to ensure the operational reliability of the elastic element 7, generally, a first connection pin 71 and a second connection pin 72 are respectively formed on the elastic element 7, as shown in fig. 9; an axial hole 61 is formed on the central shaft 6, as shown in fig. 8; the eccentric sleeve 8 is formed with a radial notch 81, as shown in fig. 10. The first connecting pin 71 and the axial hole 61 form a clamping structure, the second connecting pin 72 and the radial notch 81 form a clamping structure, so that the central shaft 6 and the eccentric sleeve 8 are connected through the elastic element 7 to form an elastic input shaft structure, wherein the eccentric sleeve 8 can rotate relative to the central shaft 6 and can be reset through the elastic element 7.

The driving gear 4, the driven gear 5, the connecting plate 9 and the input shaft are all located inside a hollow cavity of the shell, the connecting plate 9 is located between the cover plate 11 and the driving gear 4, and the rotating motion of the shell is transmitted to the driving gear 4 through the connecting plate 9. Driving gear 4 and driven gear 5 between form meshing transmission structure, and the number of teeth on the driving gear 4 is less than the number of teeth on the driven gear 5, driven gear 5 and camshaft 15 between form fixed connection structure through bolt 13 to make camshaft 15 and driven gear 5 synchronous revolution. Generally, as shown in fig. 3, a limit step 31 is formed on the driving wheel 3, and an axial assembly space is formed between the limit step 31 and the cover plate 11 so as to limit the axial displacement of the driven gear 5 and the connecting plate 9.

When the phaser actuator of the present invention is in operation, as shown in fig. 1, the motor 1 drives the input shaft through the motor shaft 2 to rotate the input shaft relative to the housing, the input shaft radially supports the driving gear 4, the driving gear 4 drives the driven gear 5 in meshing transmission with the driving gear, the driven gear 5 forms a coaxial rotation structure relative to the driving wheel 3, the driving wheel 3 rotates synchronously with the crankshaft through a chain or a belt, and when the rotation speed of the input shaft is different from that of the driving wheel 3, the phase of the camshaft 15 relative to the crankshaft can be controlled. When the phaser is normally adjusted, the elastic element 7 therein is used to transfer the kinetic energy output from the motor 1; however, when the phaser collides at the limit position of phase adjustment due to factors such as the loss of control of the motor 1, the elastic element 7 can absorb the kinetic energy from the motor 1 and convert the kinetic energy into elastic potential energy, so that the energy generated by the collision can be absorbed timely through the elastic input shaft structure, the impact on the phaser and the motor 1 can be reduced, particularly the impact on the phaser at the limit position of phase adjustment can be reduced, the impact damage on the phaser and the motor can be effectively prevented, and the service life of the phaser and the motor 1 can be prolonged.

In order to further reduce the radial dimension of the phaser actuator and improve the operational reliability of the phaser actuator, an eccentric structure may be formed between the eccentric sleeve outer circle 82 and the eccentric sleeve inner hole 83 on the eccentric sleeve 8, the housing axis 14 of the housing is arranged in parallel with respect to the drive gear axis 17 of the drive gear 4, i.e., an eccentric structure is also formed between the housing axis 14 and the drive gear axis 17, as shown in fig. 1, and the eccentricity between the eccentric sleeve outer circle 82 and the eccentric sleeve inner hole 83 is equal to the eccentricity between the housing axis 14 and the drive gear axis 17, the eccentric sleeve 8 is sleeved on the central shaft 6, and at this time, the input shaft radially and eccentrically supports the drive gear 4. Further, driving gear 4 on form the external tooth, driven gear 5 on form the internal tooth, driving gear 4 and driven gear 5 between form the internal gearing transmission structure, and the external tooth number of teeth on the driving gear 4 is less than the internal tooth number of teeth on the driven gear 5. As shown in fig. 4, 5 and 6, a limit boss 32 is radially formed on one end surface of the driving wheel 3, a limit notch 51 is circumferentially formed on one end surface of the driven gear 5, the limit boss 32 is disposed between the limit notches 51, a relative rotation structure is formed by the limit boss 32 and the limit notch 51, and the limit notch 51 limits the rotation amplitude of the driving wheel 3 relative to the driven gear 5, that is, the adjustable angle Φ of the phaser. Assuming that the opening angle of the limiting boss 32 is α and the opening angle of the limiting notch 51 is β, there are: phi is beta-alpha as shown in fig. 4.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a phaser adjusting device, includes casing, input shaft and driving gear (4), the input shaft form relative pivoted swing joint structure, its characterized in that with casing, driving gear (4) respectively: the input shaft include center pin (6), elastic element (7) and eccentric cover (8), center pin (6) and casing between form relative pivoted swing joint structure, eccentric cover (8) and driving gear (4) between form relative pivoted swing joint structure, elastic element (7) set up between center pin (6) and eccentric cover (8), and form relative rotating structure between eccentric cover (8) and center pin (6).

2. A phaser actuator apparatus as claimed in claim 1 wherein: a first connecting pin (71) is formed on the elastic element (7), an axial hole (61) is formed on the central shaft (6), and a clamping structure is formed between the first connecting pin (71) and the axial hole (61).

3. A phaser actuator apparatus as claimed in claim 1 wherein: the elastic element (7) is provided with a second connecting pin (72), the eccentric sleeve (8) is provided with a radial notch (81), and a clamping structure is formed between the second connecting pin (72) and the radial notch (81).

4. A phaser actuator apparatus as claimed in claim 1 wherein: eccentric cover excircle (82) and eccentric cover hole (83) on eccentric cover (8) between form eccentric structure, casing and driving gear (4) between form eccentric structure, and the eccentricity between eccentric cover excircle (82) and the eccentric cover hole (83) equals the eccentricity between casing and driving gear (4).

5. A phaser actuator apparatus as claimed in claim 1 wherein: the eccentric sleeve (8) is sleeved on the central shaft (6).

6. A phaser actuator apparatus as claimed in any one of claims 1 to 5 wherein: the driving gear (4) and the driven gear (5) form a meshing transmission structure, and the driven gear (5) and the driving wheel (3) form a relative rotation structure.

7. A phaser actuator apparatus as claimed in claim 6 wherein: the driving wheel (3) on form spacing boss (32), driven gear (5) on form spacing breach (51), spacing boss (32) and spacing breach (51) cooperation form relative revolution mechanic, and limit driving wheel (3) for driven gear's (5) rotation amplitude through spacing breach (51).

8. A phaser actuator apparatus as claimed in claim 6 wherein: driving gear (4) on form the external tooth, driven gear (5) on form the internal tooth, driving gear (4) and driven gear (5) between form the inner gearing transmission structure, and the external tooth number of teeth on driving gear (4) is less than the internal tooth number of teeth on driven gear (5).

9. A phaser actuator apparatus as claimed in any one of claims 1 to 5 wherein: the casing include drive wheel (3) and apron (11), apron (11) and drive wheel (3) between form detachable fixed connection structure through screw (12), and form axial assembly space between apron (11) and drive wheel (3).

10. A phaser actuator apparatus as claimed in claim 9 wherein: the driving wheel (3) is provided with a limiting step (31), and an axial assembly space is formed between the limiting step (31) and the cover plate (11).