Motorcycle engine starting device with starting protection function

Abstract

The utility model discloses a motorcycle engine starting device with starting protection, which is characterized in that a duplex bull gear is in non-rigid connection with a duplex pinion through a duplex gear shaft, so that power transmission is cut off. The double-gear starting device has the advantages of being ingenious in structural design, high in reliability and light in weight, meanwhile, good starting performance is guaranteed, power transmission can be cut off in the starting and recoil processes to protect the whole starting device, and therefore the service life of the gears and the motor is prolonged, the double-gear combination is of a split structure, disassembly and assembly are convenient, and cost is low. And the production manufacturability and the assembly manufacturability can be well met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motorcycle engine technical field, mainly relates to a kind of motorcycle engine starting device with starting protection. BACKGROUND

[0002] The existing motorcycle electric starting device is generally composed of a starting motor, an integrated double gear, a starting gear and a one-way device. During the starting process of the motorcycle, the starting motor drives the transmission gear, which in turn drives the starting gear. Finally, the starting gear drives the crankshaft to rotate through the one-way device to start the engine. During the starting process, the motor needs to ensure high speed and torque to ensure normal ignition of the engine. If the starting device is stuck during the starting process and cannot cut off the power transmission, it will cause the motor load power to increase, and there is a risk of motor damage. At the same time, the engine will have a recoil phenomenon during the starting process, which will cause the gear to impact and the motor to reverse, thereby damaging the entire starting device. This conventional starting device has single function, poor reliability, poor starting performance, short gear life and high risk of motor damage. SUMMARY

[0003] The utility model provides a kind of motorcycle engine starting device with starting protection in view of the deficiency of prior art.

[0004] To achieve the above purpose, the utility model adopts the technical scheme of:

[0005] The utility model patent provides a kind of motorcycle engine starting device with starting protection, including starting motor, double gear combination, idler combination, starting gear, one-way device. Wherein the double gear combination includes double large gear, double small gear, double gear shaft, butterfly washer, flat pad. The starting motor is connected with the double large gear, the double small gear is connected with the idler combination, the idler combination is connected with the starting gear, and the starting gear is connected with the one-way device.

[0006] Preferably, the butterfly washer and the flat pad are installed between the double large gear and the double small gear, the flat pad is in contact with the double small gear and the butterfly washer, and the butterfly washer is in contact with the end face of the double large gear.

[0007] Preferably, the double small gear and the double gear shaft are provided with threads, and the double small gear is connected with the double gear shaft through threads.

[0008] Preferably, the double large gear and the double gear shaft are provided with taper surfaces, and the double large gear is connected with the double gear shaft through the taper surfaces.

[0009] Preferably, the double gear shaft cone surface is provided with a circle of oil grooves and four oil holes.

[0010] Preferably, the double gear shaft and the double gear are provided with weight reduction holes.

[0011] The utility model discloses a starting device of motorcycle engine with starting protection, and compared with the prior art, the utility model has the advantages of clever structure design, high reliability and light weight, while ensuring good starting performance, and can cut off power transmission during starting and recoil to protect the whole starting device, thereby prolonging the service life of the gear and the motor. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the schematic diagram of the utility model motorcycle starting device embodiment.

[0013] Figure 2 It is the schematic diagram of double gear combination.

[0014] Figure 3 It is the schematic diagram of double gear combination.

[0015] Figure 4 It is the schematic diagram of double gear combination.

[0016] Figure 5 It is the schematic diagram of double gear combination.

[0017] Figure 6 It is the schematic diagram of double gear combination.

[0018] The reference signs in the drawings of the specification include: 1, starting motor;2, double gear combination;3, double gear shaft 4, double gear shaft weight reduction hole 301, (change to: 、) 302, oil groove 302;303, oil hole;304, screw;305, cone surface;4, double gear;401, weight reduction hole;402, cone surface;5, double gear;501, screw hole;6, idler combination;7, starting gear;8, one-way device;9, butterfly washer;10, flat pad. DETAILED DESCRIPTION

[0019] The following is the specific embodiment of the utility model and is combined with the drawings, and the technical scheme of the utility model is further described, but the utility model is not limited to these embodiments.

[0020] As Figure 1The shown motorcycle engine starting device with starting protection includes a starting motor 1, a double gear combination 2, an idler combination 6, a starting gear 7 and a one-way device 8, a butterfly washer 9 and a flat washer 10, the double gear shaft 3, the double gear big gear 4, the double gear small gear 5, the butterfly washer 9 and the flat washer 10 constitute the double gear combination 2. The double gear big gear 4 is connected with the double gear shaft 3 through the contact of the conical surface 402 and the conical surface 305, the double gear small gear 5 is connected and fixed with the double gear shaft 3 through the threaded hole 501 and the thread 304, and the butterfly washer 9 and the flat washer 10 are installed between the double gear big gear 4 and the double gear small gear 5.

[0021] The process of protecting the power cut transmission of the starting device is as follows:

[0022] The starting motor 1 sends a starting torque, which is transmitted through the double gear combination 2, the idler combination 6, the starting gear 7 and the one-way device 8, and finally overcomes the starting resistance torque to drive the crankshaft to rotate. In order to cut the power transmission during the starting process, the double gear big gear 4 is connected with the double gear shaft 3 through the conical surface, the double gear small gear 5 will extrude the butterfly washer 9 during the installation process and generate a certain pressure on the butterfly washer 9, the double gear big gear 4 and the double gear shaft 3 will generate a static friction force on the conical surface under the pressure generated by the butterfly washer 9, thereby providing a certain initial torque for the double gear combination 2, when the torque transmitted by the double gear combination 2 exceeds the initial torque, the double gear big gear 4 will slip relative to the double gear shaft 3, the gear will be idle, thereby cutting the power transmission. When the engine appears a recoil phenomenon, the recoil torque will be transmitted from the crankshaft to the one-way device 8, the starting gear 7, the idler combination 6, the double gear combination 2 and the starting motor 1, and during this process, when the torque transmitted by the double gear combination 2 exceeds the initial torque, the double gear big gear 4 will slip relative to the double gear shaft 3, thereby cutting the power transmission.

[0023] The working principle of the embodiment is that the starting motor drives the double gear big gear to rotate, the double gear big gear drives the double gear shaft to rotate, the double gear shaft drives the double gear small gear to rotate, the double gear small gear drives the idler to rotate, the idler drives the starting gear to rotate, the starting gear drives the one-way device to rotate, and finally the one-way device drives the crankshaft to rotate to start the engine.

[0024] When the starting device appears a stuck or engine recoil phenomenon during the starting process, in order to protect the starting device, the double gear big gear and the double gear small gear are non-rigidly connected through the double gear shaft, the double gear small gear will extrude the butterfly washer during the installation process and generate a certain pressure, the double gear big gear and the double gear shaft will generate a static friction force on the conical surface under the pressure generated by the butterfly washer, thereby providing a certain initial torque for the double gear, when the torque transmitted by the double gear exceeds the initial torque, the two contacting conical surfaces will slip, the double gear small gear or the double gear big gear will be idle, thereby cutting the power transmission.

[0025] Finally, it should be noted that the above only describes the technical solutions of the present application, and is not used to limit the protection scope of the present application. The skilled in the art can still make simple modifications or equivalent replacements to the technical solutions recorded in the foregoing embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A motorcycle engine starting device with starting protection, comprising a starting motor, a double gear wheel combination, an idler wheel combination, a starting gear wheel, a one-way device, characterized in that, The double gear combination comprises a double large gear, a double small gear, a double gear shaft, a butterfly washer, and a flat washer. The starting motor is connected to the double large gear. The double small gear is connected to the idler combination. The idler combination is connected to the starting gear. The starting gear is connected to the one-way clutch.

2. A starting device for a motorcycle engine with start protection according to claim 1, characterized in that: The butterfly washer and the flat washer are installed between the double large gear and the double small gear. The flat washer is in contact with the double small gear and the butterfly washer. The butterfly washer is in contact with the end face of the double large gear.

3. A starting device for a motorcycle engine with start protection according to claim 1, characterized in that: The double small gear and the double gear shaft are provided with threads. The double small gear is connected to the double gear shaft through the threads.

4. A starting device for a motorcycle engine with start protection according to claim 1, characterized in that: The double large gear and the double gear shaft are provided with taper faces. The double large gear is connected to the double gear shaft through the taper faces.

5. The motorcycle engine starting apparatus with start protection according to claim 1, characterized in that: The taper face of the double gear shaft is provided with a ring of oil grooves and four oil holes.

6. A starting device for a motorcycle engine with start protection according to claim 1, characterized in that: The double gear shaft and the double large gear are provided with weight-reducing holes.

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