CN212250313U

CN212250313U - Starter isolator structure

Info

Publication number: CN212250313U
Application number: CN202020959961.6U
Authority: CN
Inventors: 姜彧
Original assignee: Chengdu Huachuan Electric Parts Co Ltd
Current assignee: Chengdu Huachuan Electric Parts Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-29
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a starter isolator structure, including isolator and declutch shift ring, the centre of isolator is equipped with the star gear, and the both ends of isolator are fixed with the teeth of a cogwheel and transmission shaft respectively, transmission shaft and declutch shift ring sliding connection, still including setting up the meshing spring between star gear and declutch shift ring. The utility model has the advantages that the meshing spring is arranged between the shifting fork and the star wheel of the isolator, so that the gear of the isolator can play a role in buffering when contacting with the engine flywheel, and the rigid collision between the gear of the isolator and the engine flywheel can be weakened, thereby playing a role in protecting the gear of the isolator and prolonging the service life of the isolator; and the elastic force generated by the pressed meshing spring can help the one-way gear to enter the tooth groove of the flywheel as soon as possible, so that the one-way gear can drive the flywheel to rotate, and the engine can be started normally.

Description

Starter isolator structure

Technical Field

The utility model belongs to the technical field of automobile starter technique and specifically relates to a starter isolator structure.

Background

The starter is a device which converts the electric energy of a storage battery into mechanical energy in automobile equipment so as to drive a flywheel of an engine to rotate, so that the engine is started, and the starter isolator is a transmission device which transmits torque to the flywheel on the starter.

When the electromagnetic switch of the starter is electrified, the shifting fork pushes the isolator to move, and the gear of the isolator enters the tooth slot of the engine flywheel and is meshed with the engine flywheel, so that the engine flywheel is dragged to rotate. Since the gear teeth of the isolator are smaller than the number of teeth of the flywheel, the general ratio is 1: 10, when the starter works, the gear of the isolator cannot directly enter the tooth space of the flywheel but collides with the flywheel, so that the gear of the isolator is easily damaged due to the rigid collision between the gear of the isolator and the flywheel, and the work of the starter is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the starter one-way device structure can play a role in buffering when the one-way device collides with an engine flywheel.

For solving the technical problem the utility model discloses the technical scheme who adopts is: the starter isolator structure comprises an isolator and a shifting fork ring, wherein a star wheel is arranged in the middle of the isolator, gear teeth and a transmission shaft are respectively fixed at two ends of the isolator, the transmission shaft is in sliding connection with the shifting fork ring, and the starter isolator structure further comprises a meshing spring arranged between the star wheel and the shifting fork ring.

Further, the method comprises the following steps: the edge of the shifting fork ring is vertically bent towards the direction of the meshing spring to form a circular limiting section.

Further, the method comprises the following steps: the inner diameter of the limiting section is larger than the maximum outer diameter of the meshing spring.

Further, the method comprises the following steps: and a check ring is fixed at the end of the transmission shaft far away from one end of the star wheel, and the shifting fork ring is positioned between the check ring and the star wheel.

Further, the method comprises the following steps: and chamfering and trimming the tooth tops of the gear teeth.

The utility model has the advantages that: the utility model has the advantages that the meshing spring is arranged between the shifting fork and the star wheel of the isolator, so that the gear of the isolator can play a role in buffering when contacting with the engine flywheel, and the rigid collision between the gear of the isolator and the engine flywheel can be weakened, thereby playing a role in protecting the gear of the isolator and prolonging the service life of the isolator; and the elastic force generated by the pressed meshing spring can help the one-way gear to enter the tooth groove of the flywheel as soon as possible, so that the one-way gear can drive the flywheel to rotate, and the engine can be started normally.

Drawings

FIG. 1 is a half-sectional view of the present invention;

labeled as: 100-one-way device, 110-star wheel, 120-one-way device gear, 130-transmission shaft, 140-retainer ring, 200-shifting fork ring, 210-limiting section and 300-meshing spring.

Detailed Description

In order to facilitate understanding of the present invention, the following description is further provided with reference to the accompanying drawings.

As shown in fig. 1, the starter isolator structure claimed in the present invention includes an isolator 100 and a shift ring 200, a star wheel 110 is fixed in the middle of the isolator 100, an isolator gear 120 and a transmission shaft 130 are respectively fixed at two ends of the isolator 100, and the shift ring 200 is sleeved on the transmission shaft 130 and can slide along the transmission shaft 130. The isolator gear 120 is used for being meshed with a flywheel of the engine to drive the flywheel to rotate; the shifting fork ring 200 slides along the transmission shaft 130 to push the isolator 100 towards the engine flywheel, so that the isolator gear 120 enters the tooth space of the engine flywheel; the transmission shaft 130 is in transmission connection with a starter motor, and the starter motor drives the one-way gear 120 to rotate through the rotation of the transmission shaft 130 after being started, and finally drives the flywheel meshed with the one-way gear 120 to rotate. The utility model discloses in order to protect isolator gear 120, meshing spring 300 has been set up between star gear 110 and shifting fork ring 200, meshing spring 300 cover is on transmission shaft 130, move towards engine flywheel when isolator 100 under the promotion of shifting fork ring 200, when isolator gear 120 contacts with engine flywheel, meshing spring 300 pressurized deformation, cushion shifting fork ring 200, weaken shifting fork ring 200 the effort of applying isolator 100, thereby reduce the rigidity collision that takes place between isolator gear 120 and the engine flywheel, avoid isolator gear 120 to receive the damage, can effectively improve isolator 100's life.

In addition, the meshing spring 300 not only can play a role of buffering, but also can ensure that the one-way clutch gear 120 meshes with the engine flywheel. As can be seen from the above, when the one-way clutch gear 120 contacts the engine flywheel, the meshing spring 300 is compressed and deformed, and then the one-way clutch 100 is driven by the starter motor to rotate, and the one-way clutch gear 120 rotates to the tooth space of the engine flywheel, the elastic force of the meshing spring 300 helps the one-way clutch 100 to continue to advance, so that the one-way clutch gear 120 enters the tooth space of the flywheel more quickly, and the one-way clutch gear 120 is ensured to be meshed with the engine flywheel. Moreover, the tooth tops of the gear teeth 120 may be chamfered and trimmed, and the one-way clutch gear 120 may be assisted to enter the tooth grooves of the flywheel more quickly.

In order to avoid the moving distance of the isolator 100 exceeding the specified stroke, the utility model discloses in improve the structure of the declutch shift ring 200, as shown in fig. 1, set up the spacing section 210 of annular shape on the limit portion of the declutch shift ring 200, spacing section 210 is formed by the limit portion of the declutch shift ring 200 bending perpendicularly towards the direction of the meshing spring 300, and the moving distance that the length of spacing section 210 was set for according to the actual need of the isolator 100 is set for. The inner diameter of the stopper section 210 should be larger than the maximum outer diameter of the meshing spring 300 so that the stopper section 210 can enclose the meshing spring 300 therein, and the deformation degree of the meshing spring 300 can be restricted by providing the stopper section 210, thereby changing the advancing distance of the one-way gear 120.

As shown in fig. 1, the utility model discloses still set up round retaining ring 140 on transmission shaft 130, retaining ring 140 sets up the end of keeping away from star gear 110 one end at transmission shaft 130, makes shifting fork ring 200 be located between retaining ring 140 and star gear 110, can carry on spacingly to shifting fork ring 200's backspacing distance through setting up retaining ring 140, avoids shifting fork ring 200 to break away from transmission shaft 130.

Claims

1. Starter isolator structure, including isolator (100) and declutch shift ring (200), the centre of isolator (100) is equipped with star gear (110), and the both ends of isolator (100) are fixed with isolator gear (120) and transmission shaft (130) respectively, and transmission shaft (130) and declutch shift ring (200) sliding connection, its characterized in that: the star wheel (110) is arranged on the outer side of the shifting fork ring (200).

2. The starter isolator structure as claimed in claim 1, wherein: the side part of the shifting fork ring (200) is vertically bent towards the direction of the meshing spring (300) to form a circular limiting section (210).

3. The starter isolator structure as claimed in claim 2, wherein: the inner diameter of the limiting section (210) is larger than the maximum outer diameter of the meshing spring (300).

4. The starter isolator structure as claimed in claim 1, wherein: the end of the transmission shaft (130) far away from one end of the star wheel (110) is fixedly provided with a retainer ring (140), and the shifting fork ring (200) is positioned between the retainer ring (140) and the star wheel (110).

5. The starter isolator structure as claimed in claim 1, wherein: and chamfering and trimming the tooth tops of the isolator gears (120).