Electric starting mechanism and engine

Abstract

The electric starting mechanism comprises a starting motor, a gear set, an overrun clutch and a gap bridge gear, the starting motor is used for providing starting power, the gear set is used for conducting the starting power generated by the starting motor, the overrun clutch is fixed on a bearing and meshed with the gear set, and the gap bridge gear is used for driving the overrun clutch to rotate. And the gap bridge gear and the overrun clutch are fixed on the same gear shaft and are meshed with the clutch gear to drive the clutch to rotate, and the clutch drives the primary driving gear so as to drive the crankshaft to finish starting. The overrun clutch and the gap bridge gear are designed to be of an integral structure, the arrangement space is reduced, meanwhile, the special lubricating oil channel is designed, engine oil lubricates the overrun clutch and the gap bridge gear in a targeted mode, meanwhile, the lubricated engine oil is collected through the oil collecting structure and then lubricates the auxiliary shaft right bearing, machining of the lubricating oil channel of the auxiliary shaft bearing of the right box body is reduced, and machining cost is reduced. And friction force is reduced, and the service life of the engine is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engine, especially a kind of electric starting mechanism and engine. BACKGROUND

[0002] Common engine electric starting structure is that starting motor drives double gear, double gear drives overbridge gear, overbridge gear drives starting gear, and finally starting gear drives overrunning clutch to drive crankshaft, to complete the starting of engine. The prior art has the following shortcomings:

[0003] 1, starting gear and overrunning clutch are designed on left crank, which increases the thickness of left side of engine case.

[0004] 2, overbridge gear and starting gear are designed side by side, which increases the layout space.

[0005] 3, the starting structure has multi-stage transmission, resulting in loud sound during starting.

[0006] 4, conventional design does not design special lubrication for electric starting structure.

[0007] Therefore, it is necessary to improve the existing engine electric starting mechanism, change the installation position of each gear of electric starting mechanism, design overrunning clutch and overbridge gear as an integral structure, arrange starting mechanism above clutch, reduce the overall width of engine, and design special lubricating oil channel to lubricate overrunning clutch and overbridge gear with targeted oil, lubricate right bearing of auxiliary shaft with collected oil after lubrication, reduce the processing of lubricating oil channel of right case auxiliary shaft bearing, and reduce friction, which is beneficial to ensure the service life of engine. CONTENT OF UTILITY MODEL

[0008] Therefore, the utility model aims to provide an electric starting mechanism and engine, change the installation position of each gear of electric starting mechanism, design overrunning clutch and overbridge gear as an integral structure, arrange starting mechanism above clutch, and reduce the overall width of engine.

[0009] The utility model relates to an electric starting mechanism and engine, comprising:

[0010] Starting motor, the starting motor is used to provide starting power;

[0011] Gear set, the gear set is used to conduct starting power generated by starting motor;

[0012] Overrunning clutch, the overrunning clutch is fixed on gear shaft and engaged with gear set;

[0013] The over-bridge tooth is fixed on the same gear shaft as the over-running clutch and is engaged with the clutch teeth to drive the clutch to rotate, the clutch drives the primary driving tooth to drive the crankshaft and complete the starting of the engine.

[0014] Further, the gear set comprises:

[0015] The double coupling tooth is engaged with the output gear of the starting motor;

[0016] The disc-shaped tooth is nested and coaxially rotated with the double coupling tooth and is engaged with the over-running clutch.

[0017] Further, the over-running clutch comprises an outer ring gear engaged with the disc-shaped tooth and an inner ring coaxially fixed with the over-bridge tooth; when the starting motor starts, the outer ring gear of the over-running clutch drives the inner ring to rotate, further drives the over-bridge tooth and the clutch to rotate, and completes the starting of the engine; after the engine starts, the clutch drives the over-bridge tooth and the inner ring of the over-running clutch to rotate, and the inner ring of the over-running clutch cannot drive the outer ring gear to rotate, so that the over-bridge tooth is in an idle state.

[0018] Further, the over-bridge tooth comprises a main tooth and a secondary tooth, and the main tooth and the secondary tooth are engaged with the clutch teeth at the same time.

[0019] Further, the secondary tooth comprises an outer ring and an inner ring, and a matching groove is arranged between the outer ring and the inner ring, and an elastic element is arranged in the groove, so that the secondary tooth is tightly attached to the clutch teeth when rotating, and is used for reducing the transmission sound of the over-bridge tooth when idling.

[0020] Further, the gear shaft penetrating through the over-running clutch and the over-bridge tooth is a hollow structure, and the hollow structure is designed as an oil channel, and the gear shaft is further provided with an oil hole.

[0021] Further, the oil hole comprises an oil hole I, an oil hole II and an oil hole III, the oil hole I and the oil hole III are used for lubricating the gear shaft with oil, and the oil hole II is used for lubricating the spline between the over-bridge tooth and the over-running clutch with oil.

[0022] Further, the engine is further provided with an oil collecting structure, and the oil collecting structure is arranged below the clutch and on the auxiliary shaft mounting hole, and is used for collecting the oil lubricating the over-bridge tooth to lubricate the right body auxiliary shaft bearing.

[0023] The utility model also provides an engine, the engine is installed with the electric starting mechanism of the above-mentioned.

[0024] The utility model discloses an advantageous effect: the utility model discloses a kind of electric starting mechanism and engine, starting mechanism is arranged above clutch, reduce the engine overall width, it is designed as integrated structure to reduce arrangement space with overrun clutch and over-bridge tooth, over-bridge tooth increases secondary tooth to reduce gear transmission sound, over-bridge tooth gear shaft increases shunt oil hole, so that starting mechanism is fully lubricated, lubricated oil is collected after lubricating auxiliary shaft bearing, reduce the processing of right box auxiliary shaft bearing lubricating oil channel, and reduce friction, it is beneficial to guarantee the service life of engine. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will be further described below in connection with the drawings and examples:

[0026] Figure 1 It is the structure schematic view of the utility model;

[0027] Figure 2 It is the oil circuit schematic view of the utility model;

[0028] Figure 3 It is the structure side view of the utility model. DETAILED DESCRIPTION

[0029] Figure 1 It is the structure schematic view of the utility model, Figure 2 It is the oil circuit schematic view of the utility model, Figure 3 It is the structure side view of the utility model, as shown in the figure: a kind of electric starting mechanism and engine of the embodiment, comprising:

[0030] Starting motor 1, the starting motor 1 is used to provide starting power;

[0031] Gear set 2, the gear set 2 is used to conduct starting power generated by starting motor;

[0032] Overrun clutch 3, the overrun clutch 3 is fixed on gear shaft 4, and is engaged with gear set 2;

[0033] Over-bridge tooth 5, the over-bridge tooth 5 is fixed on the same gear shaft 4 with overrun clutch 3, and is engaged with clutch tooth 6, drives clutch to rotate, clutch drives primary driving tooth 7, to drive crankshaft, completes the starting of engine.

[0034] In the embodiment, the gear set 2 includes:

[0035] Double coupling tooth 21, the double coupling tooth 22 is engaged with starting motor output end gear;

[0036] Disc type tooth 22, the disc type tooth 22 is nested with double coupling tooth 21 and coaxial rotation, and is engaged with overrun clutch 3.

[0037] In the embodiment, the overrunning clutch 3 comprises an outer gear and an inner ring, the outer gear is engaged with the disc-shaped teeth, and the inner ring is coaxially fixed with the overbridge teeth 5; when the starting motor 1 starts, the overrunning clutch outer gear drives the inner ring to rotate, further drives the overbridge teeth 5 and the clutch to rotate, and the starting of the engine is completed; after the engine starts, the clutch drives the overbridge teeth 5 and the overrunning clutch inner ring to rotate, and the overrunning clutch inner ring cannot drive the outer gear to rotate, so that the overbridge teeth 5 are in an idling state.

[0038] In the embodiment, the overbridge teeth 5 comprise overbridge teeth main teeth 51 and overbridge teeth secondary teeth 52, and the overbridge teeth main teeth 51 and the overbridge teeth secondary teeth 52 are engaged with the clutch teeth 6 at the same time.

[0039] In the embodiment, the overbridge teeth secondary teeth 52 comprise an outer ring and an inner ring, and a matching groove is arranged between the outer ring and the inner ring, a spring is arranged in the groove, or other elastic members can be used, so that the overbridge teeth secondary teeth 52 are tightly attached to the clutch teeth 6 when rotating, and the sound generated when the overbridge teeth 5 idles and drives the clutch teeth 6 is reduced.

[0040] In the embodiment, the gear shaft 4 penetrating through the overrunning clutch 3 and the overbridge teeth 5 is a hollow structure, the hollow structure is designed as an oil channel, and the gear shaft 4 is also provided with oil holes.

[0041] In the embodiment, the oil holes comprise oil hole I, oil hole II and oil hole III, the oil hole I and the oil hole III are used for lubricating the gear shaft 4 with oil, and the oil hole II is used for lubricating the spline between the overbridge teeth and the overrunning clutch with oil.

[0042] In the embodiment, the engine is also provided with an oil collecting structure 8, the oil collecting structure 8 is located below the clutch and on the auxiliary shaft mounting hole, the oil collecting structure is a strip-shaped protruding structure, can receive the splashed oil of the overbridge teeth 5 to lubricate the right body auxiliary shaft bearing.

[0043] The utility model also provides an engine, the engine is installed with one kind of electric starting mechanism as above-mentioned, through the mechanism can effectively reduce the layout space of engine, and designs special lubricating oil channel makes starting mechanism to get sufficient lubrication, guarantees the service life of engine.

[0044] Finally, it is pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and they should be covered in the claim range of the utility model.

Claims

1. An electrically activated mechanism characterized by: It comprises: a starting motor for providing starting power; a gear set for transmitting the starting power generated by the starting motor; a freewheel fixed on the gear shaft and engaged with the gear set; a bridge gear fixed on the same gear shaft with the freewheel and engaged with the clutch gear to drive the clutch to rotate, which in turn drives the primary driving gear to drive the crankshaft.

2. An electrically actuated mechanism according to claim 1, characterised in that: The gear set comprises: a double gear engaged with the output gear of the starting motor; a disc gear nested with the double gear and coaxially rotating and engaged with the freewheel.

3. An electrically actuated mechanism according to claim 1, wherein: The freewheel comprises an outer ring gear engaged with the disc gear and an inner ring coaxially fixed with the bridge gear.

4. An electrically actuated mechanism according to claim 1, wherein: The bridge gear comprises a main gear and a secondary gear, both of which are engaged with the clutch gear.

5. An electrically actuated mechanism according to claim 4, wherein: The secondary gear comprises an outer ring and an inner ring with matching grooves between them, and elastic members inside the grooves to make the secondary gear tightly adhere to the clutch gear when rotating, for reducing the noise when the bridge gear idles.

6. An electrically actuated mechanism according to claim 1, wherein: The gear shaft throughout the freewheel and the bridge gear is hollow, designed as an oil channel, and further provided with oil holes.

7. An electrically actuated mechanism according to claim 6, wherein: The oil holes comprise oil hole I, oil hole II and oil hole III, the oil hole I and the oil hole III are used for lubricating the gear shaft, and the oil hole II is used for lubricating the spline between the bridge gear and the freewheel.

8. An electrically actuated mechanism according to claim 1, wherein: An oil collecting structure is further provided, located below the clutch and on the auxiliary shaft mounting hole, for collecting the oil lubricating the bridge gear to lubricate the right body auxiliary shaft bearing.

9. An engine characterized by: The engine is provided with an electric starting mechanism as claimed in any one of claims 1-8.

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