CN209875889U

CN209875889U - Gear applied to camshaft

Info

Publication number: CN209875889U
Application number: CN201920161484.6U
Authority: CN
Inventors: 林宇声; 范韬
Original assignee: Fuzhou Puso Engineering Technology Co Ltd
Current assignee: Fuzhou Puso Engineering Technology Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2019-12-31
Anticipated expiration: 2029-01-30

Abstract

The utility model provides a gear applied to a camshaft in the field of engines, which comprises a gear body; a first hole for sleeving the rotating shaft is formed in the center of the gear body; the gear body is provided with six second holes at the position surrounding the center of the gear body; the side surface of the gear body is provided with a plurality of tooth forms for meshing. The utility model has the advantages that: the production cost and the use cost of the gear are reduced.

Description

Gear applied to camshaft

Technical Field

The utility model relates to an engine field indicates a gear of being applied to camshaft very much.

Background

The camshaft is an important component in the piston engine and is used for controlling the opening and closing actions of the valve, and the camshaft occupies a very important position because the motion law of the valve is related to the power and the running characteristics of one engine. However, the gears of the conventional camshaft are all solid, and have the defects of heavy weight, high production cost and high carrying cost. Therefore, how to reduce the production cost of the gear applied to the camshaft becomes a problem to be solved.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing a be applied to the gear of camshaft, realizes reducing the manufacturing cost and the use cost of gear.

The utility model discloses a realize like this: a gear applied to a camshaft comprises a gear body; a first hole for sleeving the rotating shaft is formed in the center of the gear body; the gear body is provided with six second holes at the position surrounding the center of the gear body; the side surface of the gear body is provided with a plurality of tooth forms for meshing.

Further, the tooth profile is an involute curve.

The utility model has the advantages that:

1. through the gear body is equipped with six second holes in the department of encircleing gear body center, makes the gear body has improved the manufacturability of production process on the basis that satisfies the intensity requirement, has practiced thrift raw and other materials, has reduced manufacturing cost, has reduced the logistics cost when carrying on a large scale simultaneously to reduce the rotation inertia of camshaft, reduce the energy consumption, and then reduce use cost.

2. The first hole is convenient for rapidly installing the gear applied to the camshaft on the rotating shaft, and the positioning of the relative position of the gear is realized.

3. The gears are meshed with each other conveniently through the tooth profile of the involute.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a gear applied to a camshaft according to the present invention.

Fig. 2 is a schematic view of an operating state of the camshaft according to the present invention.

Fig. 3 is an exploded schematic view of a camshaft according to the present invention.

Fig. 4 is a schematic structural diagram of the pressure reducing valve of the present invention.

Description of the labeling:

100-a gear for camshaft application, 1-a gear body, 11-a first hole, 12-a second hole, 13-a tooth profile, 2-a camshaft, 21-a shaft, 22-a cam, 23-a pressure relief device, 24-a valve lifter, 211-a first through hole, 212-a second through hole, 231-a pressure relief valve, 232-a fixing pin, 2311-a fixing piece, 2312-a first extension, 2313-a second extension, 2314-a third extension, 23111-a third hole, 23131-a first transverse edge, 23132-a first vertical edge, 23141-a second transverse edge, 23142-a second vertical edge.

Detailed Description

Referring to fig. 1 to 4, a gear 100 for a camshaft according to a preferred embodiment of the present invention includes a gear body 1; a first hole 11 for sleeving the rotating shaft is formed in the center of the gear body 1; the gear body 1 is provided with six second holes 12 around the center of the gear body 1; the side surface of the gear body 1 is provided with a plurality of tooth forms 13 for meshing. Through gear body 1 is equipped with six second holes 12 in the center department of encircleing gear body 1, makes gear body 1 has practiced thrift raw and other materials on the basis that satisfies the intensity requirement, has reduced manufacturing cost, has reduced the logistics cost when carrying on a large scale simultaneously to the rotation inertia of camshaft has been reduced, the energy consumption is reduced, and then reduces use cost. The gear 100 applied to the camshaft is easily and rapidly mounted on the rotating shaft through the first hole 11.

The tooth profile 13 is an involute, so that gears can be meshed with each other conveniently.

The following further description is made of a camshaft 2 to which the gear of the present invention is applied: the camshaft 2 comprises a rotating shaft 21, at least one cam 22, a pressure reducing device 2 and a gear body 1; the cam 22 and the gear body 1 are sleeved on the rotating shaft 21; the decompression device 23 is mounted on the rotating shaft 21 such that the decompression device 23 is located between the cam 22 and the gear body 1. The cam 22 is used for ejecting a valve tappet 24 of the engine; the pressure reducing device 23 is used for adjusting the pressure in the engine cylinder; the rotation shaft 21 is used to link the cam 22 and the gear body 1, and to incline the decompression device 23 by the rotational inertia.

The pressure reducing device 23 includes a pressure reducing valve 231 and a fixing pin 232; the pressure reducing valve 231 is fixed to the rotation shaft 21 by the fixing pin 232.

A first through hole 211 is longitudinally arranged on the rotating shaft 21, and a second through hole 212 is transversely arranged on the rotating shaft; the decompression device 23 is fixed to the rotating shaft 21 through the second through hole 212, and positions the production of the camshaft 2 using the second through hole 212 as a machining reference. Through the first through hole 211 is longitudinally arranged on the rotating shaft 21, under the condition that the requirements of strength and rigidity of the camshaft 2 are met, raw materials are saved, the production cost is reduced, the logistics cost in large-scale carrying is reduced, and the rotating inertia of the camshaft 2 is reduced.

The pressure reducing valve 231 includes a fixing member 2311, a first extension 2312, a second extension 2313 having an angle adjusting function, and a third extension 2314 having an angle adjusting function; the reducing valve 231 is integrally formed by adopting a stamping process, so that the processing difficulty is reduced; the first extension portion 2312 is arranged in front of the fixing portion 2311, the second extension portion 2313 is arranged on the left side of the fixing portion 2311, and the third extension portion 2314 is arranged on the right side of the fixing portion 2311; two sides of the fixing member 2311 are respectively provided with a symmetrical third hole 23111, and the fixing member 2311 is fixed on the rotating shaft 21 through the third hole 23111, the second through hole 212 and the fixing pin 232. Through third hole 23111, second through-hole 212 and fixed pin 232 will mounting 2311 is fixed in on the pivot 21, simple to operate is convenient for adopt automatic assembly, and then reduces the cost of labor, improves production efficiency.

The fixing member 23111 is U-shaped, the second extension portion 2313 is L-shaped, and the third extension portion 2314 is L-shaped.

The included angles between the second extending portion 2313 and the third extending portion 2314 and the upper portion of the rotating shaft 21 can be set according to actual requirements.

The second extension portion 2313 comprises a first transverse edge 23131 and a first vertical edge 23132, the first transverse edge 23131 is connected with the fixing portion 23111, and the first vertical edge 23132 is connected with the first transverse edge 23131 and is arranged at one end far away from the first extension portion 2312; the third extending portion 2314 comprises a second transverse edge 23141 and a second vertical edge 23142, the second transverse edge 23141 is connected with the fixing portion 23111, and the second vertical edge 23142 is connected with the second transverse edge 23141 and is arranged at an end far away from the first extending portion 2312. By arranging the L-shaped second extension portion 2313 and the L-shaped third extension portion 2314, the engine with different rotating speed requirements can be adapted only by adjusting the size of the included angle between the second extension portion 2313 and the third extension portion 2314 and the rotating shaft 21, or adjusting the lengths of the first vertical edge 23132 and the second vertical edge 23142, and the adjustment cost is low and the operation is convenient.

The utility model discloses the theory of operation:

the first extension 2312 abuts the valve lifter 24 of the engine when the engine is not started. When the engine is in a starting stage, the pressure reducing valve 231 starts to rotate under the driving of a gear 100 applied to a camshaft, and when the rotation speed of the pressure reducing valve 231 reaches a preset rotation speed, due to the rotation inertia, the weight relationship between the first extension 2312 and the second and third extensions 2313 and 2314, and the included angles between the second and third extensions 2313 and 2314 of the cambered surface structure and the rotation shaft 21, the first extension 2312 is inclined downward, the second and third extensions 2313 and 2314 are inclined upward, and further the first extension 2312 is separated from the valve lifter 24 to achieve the effect of adjusting the internal pressure of the engine cylinder.

To sum up, the utility model has the advantages that:

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A gear applied to a camshaft is characterized in that: comprises a gear body; a first hole for sleeving the rotating shaft is formed in the center of the gear body; the gear body is provided with six second holes at the position surrounding the center of the gear body; the side surface of the gear body is provided with a plurality of tooth forms for meshing.

2. A gear applied to a camshaft according to claim 1, wherein: the tooth profile is an involute.