Starting motor overrunning device assembly with long service life

Abstract

The utility model discloses a starting motor overrunning device assembly with long service life, which belongs to the technical field of starting motors and comprises a spline sleeve, a gear assembly, a roller, a roller spring, a housing and a C-shaped gasket, a plurality of clutch grooves are circumferentially arranged on the spline sleeve, and the roller and the roller spring providing reset elasticity for the roller are arranged in the clutch grooves. The gear assembly is arranged in the spline housing, and one end is matched and connected with the spline housing; the housing is arranged on the outer side of the spline housing; and the gasket is arranged at the joint of the spline housing and the peripheral ring of the housing. The overrunning device is simple in structure, the overall sealing performance and structural strength of the overrunning device are improved, an engine is prevented from driving a starting motor to rotate at a high speed after an automobile is started, so that the starting motor is prevented from being damaged, dust, water and other sundries are prevented from entering the starting motor, and normal operation of the starting motor is prevented from being influenced; and the service life of the overrunning device assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of starting motors, in particular to a starting motor overrunning device component with a long service life. Background Art

[0002] The overrunner assembly is widely used in the automotive industry. The overrunner assembly is a rotating mechanism in the starter motor, and the overrunner assembly is installed in the car's starting device. When starting the car, the starting device and the engine cooperate with each other to complete the entire starting process. In the initial stage, the starting device works and transmits power to the engine through the overrunner assembly, thereby driving the engine to work. After the engine is started, its speed is greater than the speed of the starting device. At this time, the starting device has completed its task and automatically disengaged from the engine. At present, general overrunner assemblies will affect the normal operation of the overrunner assembly due to dust, water and other debris entering the starting device during the driving of the car, and it is easy to damage the starting motor when the engine is running at high speed. Utility Model Content

[0003] The utility model aims to provide a long-life starter motor overrunning assembly to solve the problem that the overrunning assembly is affected by debris entering and the starter motor is easily damaged during high-speed operation.

[0004] Technical solution: The utility model provides a long-life starter motor overrunning device assembly, including: a spline sleeve, a gear assembly, a roller, a roller spring, a cover shell, and a C-shaped washer. The spline sleeve is circumferentially provided with a plurality of clutch grooves, and the clutch grooves are provided with rollers and roller springs that provide reset elastic force for the rollers; the gear assembly is arranged in the spline sleeve, and one end is matched and connected with the spline sleeve; the cover shell is arranged on the outside of the spline sleeve; the C-shaped washer is arranged between the spline sleeve and the circumference of the cover shell.

[0005] Furthermore, in the above-mentioned long-life starter motor overrunning device assembly, the clutch slots are provided with 5-8 clutch slots, and the clutch slots are filled with grease.

[0006] Furthermore, in the above-mentioned long-life starter motor overrunning assembly, the grease is first filled before the roller and the roller spring are installed, so that the roller and the roller spring are immersed in the grease. The friction of the roller and the roller spring in the clutch groove is reduced, so that the overrunning assembly runs more smoothly when the starter motor is working.

[0007] Furthermore, in the above-mentioned long-life starter motor overrunning gear assembly, the rotational torque of the gear assembly is 0.19-0.24Nm.

[0008] Furthermore, in the above-mentioned long-life starter motor overrunning device assembly, one end of the cover shell is pressed against a C-shaped gasket covering the outer periphery of the connection between the spline sleeve and the gear assembly, and the other end is pressed against the arc chamfer at the end of the spline sleeve.

[0009] Furthermore, in the above-mentioned long-life starter motor overrunning assembly, the cover is tightly pressed by the C-type gasket, and the gap is sealed and caulked with sealing rubber to ensure that there is no gap, and the caulking pressure of the cover is 15-26KN. The tight seal prevents dust, water and other debris from entering the overrunning assembly to affect normal operation, and improves the overall structural strength, prevents damage to the starter motor when it runs at high speed, and improves the service life.

[0010] Furthermore, in the above-mentioned long-life starter motor overrunning assembly, the outer layer of the housing is provided with a corrosion-resistant and wear-resistant coating, thereby improving the corrosion resistance and wear resistance of the overrunning assembly and increasing its service life.

[0011] Furthermore, in the above-mentioned long-life starter motor overrunning device assembly, the cover torque is not less than 2.9 Nm.

[0012] It can be seen from the above technical scheme that the utility model has the following beneficial effects: the utility model describes a long-life starter motor overrunning device assembly, the structure is simple, a cover is arranged on the outside of the spline sleeve, a C-type gasket is arranged between the two, and the gap is filled with sealing rubber, which improves the overall sealing and structural strength of the overrunning device, prevents the engine from driving the starter motor to run at high speed after the car is started, thereby damaging the starter motor, and protects the roller and roller spring to prevent dust, water and other debris from entering, thereby preventing the normal operation of the starter motor from being affected, and after corrosion-resistant and wear-resistant treatment, the service life of the overrunning device assembly is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a long-life starter motor overrunning device assembly of the utility model Figure 1 ;

[0014] Figure 2 A schematic diagram of a long-life starter motor overrunning device assembly of the utility model Figure 2 .

[0015] In the figure: spline sleeve 1, gear assembly 2, roller 3, roller spring 4, cover 5, C-type washer 6, clutch groove 11. DETAILED DESCRIPTION

[0016] Example 1

[0017] like Figure 1-2A long-life starter motor overrunning device assembly shown in the figure comprises: a spline sleeve 1, a gear assembly 2, a roller 3, a roller spring 4, a cover 5, and a C-type washer 6. The spline sleeve 1 is circumferentially provided with a plurality of clutch grooves 11, and the clutch grooves 11 are provided with rollers 3 and roller springs 4 for providing a restoring elastic force for the rollers 3; the gear assembly 2 is arranged in the spline sleeve 1, and one end is matched and connected with the spline sleeve 1; the cover 5 is arranged on the outside of the spline sleeve 1; and the C-type washer 6 is arranged between the spline sleeve 1 and the circumferential connection of the cover 5.

[0018] In this embodiment, one end of the cover 5 is pressed against the C-type gasket 6 to cover the outer periphery of the connection between the spline sleeve 1 and the gear assembly 2, and the other end is pressed against the arc chamfer at the end of the spline sleeve 1. The cover 5 is tightly pressed against the C-type gasket 6, and the gap is sealed with sealing rubber to ensure that there is no gap. The caulking pressure of the cover 5 is 15-26KN. The tight seal prevents dust, water and other debris from entering the interior of the overrunning assembly to affect normal operation, and improves the overall structural strength, preventing damage to the starter motor when it runs at high speed, and improving the service life.

[0019] In this embodiment, the outer layer of the cover shell 5 is provided with a corrosion-resistant and wear-resistant coating. After the corrosion-resistant and wear-resistant treatment, the service life of the overrunning device assembly is further improved.

[0020] Example 2

[0021] On the basis of Example 1, in this example, Figure 2 The illustrated embodiment shows a long-life starter motor overrunning assembly, wherein the clutch grooves 11 are provided with 5-8 pieces, and the clutch grooves 11 are filled with grease, and the grease is first filled before the roller 3 and the roller spring 4 are installed, so that the roller 3 and the roller spring 4 are soaked in the grease. The friction force of the roller 3 and the roller spring 4 in the clutch groove 11 is reduced, so that the overrunning assembly runs more smoothly when the starter motor is working.

[0022] In this embodiment, the rotational torque of the gear assembly 2 is 0.19-0.24 Nm.

[0023] In this embodiment, the torque of the cover shell 5 is not less than 2.9 Nm.

[0024] It should be noted that the above is only a technical solution of the utility model and is not a limitation. Although the utility model is described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A long-life starter motor overrunning device assembly, characterized in that: include: A spline sleeve (1), wherein the spline sleeve (1) is provided with a plurality of clutch grooves (11) in the circumference thereof, wherein a roller (3) and a roller spring (4) providing a restoring elastic force for the roller (3) are provided in the clutch groove (11); A gear assembly (2), wherein the gear assembly (2) is arranged in the spline sleeve (1), and one end of the gear assembly (2) is matched and connected to the spline sleeve (1); A cover shell (5), wherein the cover shell (5) is arranged outside the spline sleeve (1); A C-shaped gasket (6) is arranged between the spline sleeve (1) and the peripheral connection of the cover shell (5).

2. A long-life starter motor overrunning device assembly according to claim 1, characterized in that: The clutch grooves (11) are provided with 5 to 8 in number, and the clutch grooves (11) are filled with lubricating grease.

3. A long-life starter motor overrunning device assembly according to claim 2, characterized in that: The lubricating grease is first filled before the roller (3) and the roller spring (4) are arranged and installed, so that the roller (3) and the roller spring (4) are immersed in the lubricating grease.

4. A long-life starter motor overrunning device assembly according to claim 1, characterized in that: The rotational torque of the gear assembly (2) is 0.19-0.24 Nm.

5. A long-life starter motor overrunning device assembly according to claim 1, characterized in that: One end of the cover shell (5) is pressed against a C-shaped gasket (6) to cover the outer periphery of the connection between the spline sleeve (1) and the gear assembly (2), and the other end is pressed against the arc chamfer at the end of the spline sleeve (1).

6. A long-life starter motor overrunning device assembly according to claim 5, characterized in that: The cover shell (5) is tightly pressed against the C-shaped gasket (6), and the gap is sealed and caulked with sealing rubber to ensure that there is no gap. The caulking pressure of the cover shell (5) is 15-26KN.

7. A long-life starter motor overrunning device assembly according to claim 6, characterized in that: The outer layer of the cover shell (5) is provided with a corrosion-resistant and wear-resistant coating.

8. The long-life starter motor overrunning device assembly according to claim 1, characterized in that: The torque of the housing (5) is not less than 2.9 Nm.

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