CN209780982U

CN209780982U - Rotating shaft applied to camshaft

Info

Publication number: CN209780982U
Application number: CN201920161375.4U
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: 2019-12-13
Anticipated expiration: 2029-01-30

Abstract

The utility model provides a rotating shaft applied to a camshaft in the field of engines, which comprises a rotating shaft body, wherein a first through hole is longitudinally arranged on the rotating shaft body, and a second through hole for fixing a pressure reducing device is transversely arranged on the rotating shaft body; the lateral wall of pivot body is equipped with three vertical line sections that are used for increasing frictional force. The utility model has the advantages that: the production cost and the use cost of the rotating shaft are reduced.

Description

Rotating shaft applied to camshaft

Technical Field

The utility model relates to an engine field indicates a pivot 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, conventionally, the rotating shafts applied to the camshafts are all solid, and have the disadvantages of heavy weight, high production cost and high carrying cost. Therefore, how to reduce the manufacturing cost who is applied to the pivot of camshaft, and then reduce the overall cost of camshaft, become a problem of kowtowing and treating.

Disclosure of Invention

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

The utility model discloses a realize like this: a rotating shaft applied to a camshaft comprises a rotating shaft body, wherein a first through hole is longitudinally formed in the rotating shaft body, and a second through hole used for fixing a pressure reducing device is transversely formed in the rotating shaft body; the lateral wall of pivot body is equipped with three vertical line sections that are used for increasing frictional force.

The utility model has the advantages that:

1. Through the first through-hole is vertically arranged on the rotating shaft body, under the condition that the requirements of strength and rigidity are met, raw materials are saved, the production cost is reduced, the logistics cost in large-scale carrying is reduced, the rotating inertia of the cam shaft is reduced, the energy consumption is reduced, and the use cost is reduced.

2. Through the horizontal second through-hole that is equipped with of pivot body, be convenient for install the relief pressure valve in a be applied to the pivot of camshaft to it is right to utilize the second through-hole is as the processing benchmark camshaft's production is fixed a position.

3. Through the lateral wall of pivot body is equipped with three vertical line sections that are used for increasing frictional force, and the fixed gear and the cam of being convenient for prevent that gear and cam from skidding under the pivoted condition.

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 rotating shaft 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.

Fig. 5 is a schematic structural view of the gear of the present invention.

Description of the labeling:

100-a shaft for a camshaft, 1-a shaft body, 2-a cam, 3-a pressure relief device, 4-a gear, 5-a valve tappet, 31-a pressure relief valve, 32-a fixing pin, 11-a first through hole, 12-a second through hole, 13-a lug section, 311-a fixing piece, 312-a first extension portion, 313-a second extension portion, 314-a third extension portion, 3111-a first hole, 3131-a first transverse edge, 3132-a first vertical edge, 3141-a second transverse edge, 3142-a second vertical edge, 41-a second hole.

Detailed Description

Referring to fig. 1 to 5, a preferred embodiment of a rotating shaft body 100 for a camshaft according to the present invention includes a rotating shaft body 1, wherein the rotating shaft body 1 is longitudinally provided with a first through hole 11 and transversely provided with a second through hole 12 for fixing a pressure reducing device 3; the side wall of the rotating shaft body 1 is provided with three vertical line sections 13 for increasing friction force.

Through the vertical first through-hole 12 that is equipped with of pivot body 1, under the requirement that satisfies intensity and rigidity, practiced thrift raw and other materials, reduced manufacturing cost, the logistics cost when having reduced extensive transport to reduce the rotation inertia of camshaft, and then reduced the energy consumption, reduce use cost. Through the horizontal second through-hole 12 that is equipped with of pivot body 1, be convenient for install pressure relief device 3 on a pivot body 100 who is applied to the camshaft to utilize second through-hole 12 as the processing benchmark to fix a position the production of camshaft. Through the lateral wall of pivot body 1 is equipped with three vertical line sections 13 that are used for increasing frictional force, be convenient for fixed gear 4 and cam 2, prevent that gear 4 and cam 2 from skidding under the pivoted condition.

The following is further described with a camshaft to which the present invention is applied: the camshaft comprises a camshaft body 1, at least one cam 2, a pressure reducing device 3 and a gear 4; the cam 2 and the gear 4 are sleeved on the rotating shaft body 1; the decompression device 3 is mounted on the rotating shaft body 1, and the decompression device 3 is located between the cam 2 and the gear 4. The cam 2 is used for ejecting a valve tappet 5 of the engine; the pressure reducing device 3 is used for adjusting the pressure in the engine cylinder; the rotating shaft body 1 is used for linking the cam 2 and the gear 4 and enabling the decompression device 3 to incline under the action of rotating inertia.

The pressure reducing device 3 comprises a pressure reducing valve 31 and a fixing pin 32; the pressure reducing valve 31 is fixed to the shaft body 1 by the fixing pin 32.

The pressure reducing valve 31 includes a fixing member 311, a first extending portion 312, a second extending portion 313 with an angle adjusting function, and a third extending portion 314 with an angle adjusting function; the pressure reducing valve 31 is integrally formed by punching, so that the processing difficulty is reduced; the first extension 312 is disposed in front of the fixing member 311, the second extension 313 is disposed on the left side of the fixing member 311, and the third extension 314 is disposed on the right side of the fixing member 311; the two sides of the fixing member 311 are respectively provided with a symmetrical first hole 3111, and the fixing member 311 is fixed on the rotating shaft body 1 through the first hole 3111, the second through hole 12 and the fixing pin 32. Through first hole 3111, second through-hole 12 and fixed pin 32 will mounting 311 is fixed in on the pivot body 1, simple to operate is convenient for adopt automatic assembly, and then reduces the cost of labor, improves production efficiency.

the fixing member 3111 is U-shaped, the second extending portion 313 is L-shaped, and the third extending portion 314 is L-shaped.

The included angles between the second extending portion 313 and the third extending portion 314 and the upper side of the rotating shaft body 1 can be set according to actual requirements.

The second extending portion 313 includes a first transverse edge 3131 and a first vertical edge 3132, the first transverse edge 3131 is connected to the fixing member 3111, the first vertical edge 3132 is connected to the first transverse edge 3131 and is disposed at an end away from the first extending portion 312; the third extending portion 314 includes a second transverse edge 3141 and a second vertical edge 3142, the second transverse edge 3141 is connected to the fixing member 3111, and the second vertical edge 3142 is connected to the second transverse edge 3141 and disposed at an end away from the first extending portion 312. Through setting up the second extension 313 of L type and the third extension 314 of L type, only need adjust second extension 313 and third extension 314 with the contained angle size of pivot body 1, perhaps adjust the length of first vertical edge 3132 and second vertical edge 3142 can adapt to the engine that different rotational speeds required, adjust with low costs, convenient operation.

The gear 4 is provided with six second holes 41 around the center of the gear. Through gear 4 is equipped with six second holes 41 in the position of encircleing the gear center for gear 4 has practiced thrift raw and other materials on the basis that satisfies the intensity requirement, has reduced manufacturing cost.

The utility model discloses the theory of operation:

the first extension 312 abuts the valve lifter 5 of the engine when the engine is not started. When the engine is in a starting stage, the pressure reducing valve 31 starts to rotate under the driving of the gear 4, and when the rotating speed of the pressure reducing valve 31 reaches a preset rotating speed, due to the rotation inertia, the weight relationship between the first extending portion 312 and the second and third extending portions 313 and 314, and the included angles between the second and third extending portions 313 and 314 of the arc-shaped structure and the rotating shaft body 1, the first extending portion 312 is inclined downward, and the second and third extending portions 313 and 314 are inclined upward, so that the first extending portion 312 is separated from the valve lifter 5, and the effect of adjusting the internal pressure of the engine cylinder is achieved.

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. The utility model provides a be applied to pivot of camshaft which characterized in that: the rotating shaft comprises a rotating shaft body, wherein a first through hole is longitudinally formed in the rotating shaft body, and a second through hole for fixing a pressure reducing device is transversely formed in the rotating shaft body; the lateral wall of pivot body is equipped with three vertical line sections that are used for increasing frictional force.