CN211975096U

CN211975096U - Lightweight cold-heading valve spring seat

Info

Publication number: CN211975096U
Application number: CN202020394577.6U
Authority: CN
Inventors: 郜文国; 王琱
Original assignee: AVL List Technical Center Shanghai Co Ltd
Current assignee: AVL List Technical Center Shanghai Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-20
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a lightweight cold-heading valve spring holder, include: the cold-heading valve spring seat comprises a cold-heading valve spring, a valve spring and a valve locking clamp, wherein three convex structures are uniformly arranged on an outer ring of the cold-heading valve spring seat and are used for positioning an inner ring of the valve spring; the valve lock clamp is characterized by also comprising an inner conical surface attached to the valve lock clamp and a mounting surface pressed by the valve spring in a contact manner; and removing partial materials at intervals formed by the outer ring of the cold heading valve spring seat and the raised structures in the radial direction, wherein the removed partial material structures are uniformly distributed in the radial direction. Adopt the utility model relates to a cold-heading valve spring seat quality reduces about 25% ~ 30% than not isostructure big or small solid of revolution cold-heading valve spring seat quality, successfully realizes the lightweight target, satisfies the in-service use requirement.

Description

Lightweight cold-heading valve spring seat

Technical Field

The utility model relates to a gas distribution structure of engine, its concretely relates to lightweight cold-heading valve spring holder.

Background

The lightweight of the automobile is to reduce the preparation quality of the automobile as much as possible on the premise of ensuring the strength and the safety performance of the automobile, thereby improving the dynamic property of the automobile, reducing the fuel consumption and reducing the exhaust pollution. Because of the requirements of environmental protection and energy conservation, the light weight of the automobile becomes the trend of the development of the automobile in the world, the valve spring seat is used for supporting and fixing the valve spring of the gas distribution system, belongs to the core part in the engine, and the shape of the tail end of the valve is determined by the fixing mode of the upper valve spring seat. The valve spring seat is fixed by the valve locking clamp which is split into two halves and the outer surface of the valve locking clamp is a conical surface, so that the valve locking clamp is simple in structure, reliable in operation and convenient to disassemble and assemble, and is widely applied. The valve spring seat bears high-frequency alternating load and has bad working condition, so the valve spring seat can work reliably for a long time by being elaborately designed. In case the fracture of valve spring seat can cause serious engine accident, the design of valve spring seat receives the restriction on the size often, therefore the valve spring seat should have reasonable structure and size, and the spring seat should have higher fatigue strength, should guarantee certain precision and avoid various defects in the manufacturing.

The existing valve spring seat has two mature forming processes of stamping and cold heading, but the thickness distribution of the stamped valve spring seat at the mass key parts such as the side wall of a boss is extremely uneven, so that the thickening and thinning are serious and the product quality requirement is difficult to meet; the local part of the flanging workpiece has the tendency of cracking; the hole flanging workpiece is easy to crack at the U-shaped notch, the product quality is difficult to control, the rigidity is poor and the like, and a cold heading valve spring seat is mainly adopted on a high-speed engine. At present, a cold-heading valve spring seat generally adopts a revolving body structure, the rigidity of the valve spring seat is far greater than that of a valve mechanism, and the problem of redundant design exists. Therefore, the light valve spring seat has a large space, the light valve spring seat and each assembly part of the light energy-saving design of the automobile are not needed, and the concept of continuously optimizing the automobile type spectrum is not needed.

Disclosure of Invention

An object of the utility model is to provide a lightweight cold-heading valve spring holder, through the spring location structure who changes the valve spring holder, outside satisfying valve spring holder location and connection function, under the prerequisite that intensity and rigidity all satisfied, the spring location material of cutting down local solid of revolution valve spring holder outer lane satisfies the practical application demand.

In order to solve the above problems, the utility model adopts the following technical proposal:

a lightweight cold-heading valve spring seat, comprising: the cold-heading valve spring seat comprises a cold-heading valve spring seat, a valve spring and a valve locking clamp, wherein three convex structures are uniformly arranged on the outer ring of the cold-heading valve spring seat and are used for positioning the inner ring of the valve spring; the valve lock clamp is characterized by also comprising an inner conical surface attached to the valve lock clamp and a mounting surface pressed by the valve spring in a contact manner;

and removing part of materials at intervals formed by the outer ring of the cold heading valve spring seat and the bulge structure in the radial direction, wherein the removed part of the materials are uniformly distributed in the radial direction.

As the improvement of the technical scheme, a plurality of convex parts are uniformly distributed on the outer ring of the cold heading valve spring seat, the convex parts comprise right-angle parts 6, and the right-angle parts 6 can be cut down to be chamfers 7.

As an improvement of the technical scheme, the outer rings of the three convex structures are in small clearance fit with the inner ring of the valve spring, so that the positioning function of the valve spring is realized.

Compared with the prior art, the utility model discloses an implement the effect as follows:

(1) the utility model discloses the technology is ripe reliable, and the valve spring holder of cold-heading technology is compared with the punching press spring holder, and cold-heading technology realizes reducing valve spring holder deformation resistance easily and improves mould intensity, reduces the part and makes the defect, improves the operational reliability.

(2) The valve spring seat adopting the light weight design has the advantages that the mass of the valve spring seat is reduced by about 25-30% compared with that of a revolving body valve spring seat, the loss of raw materials is reduced, and the manufacturing cost of the valve spring seat is effectively reduced.

(3) The valve spring seat adopting the lightweight design can reduce the inertia of a reciprocating motion part of the valve mechanism, and is beneficial to reducing the axial vibration of the valve spring seat in the reciprocating motion process, thereby improving the vibration of an engine.

(4) The utility model can improve the output power and the torque of the engine, reduce the fuel consumption rate of the engine and reduce the exhaust pollution; the valve spring seat with light weight design can improve the dynamic property of the engine, reduce the fuel consumption rate of the engine and improve the fuel economy and emission of automobiles and other equipment engine equipment.

Drawings

FIG. 1 is a mounting structure diagram of a lightweight cold-heading valve spring seat on an engine according to the present invention;

FIG. 2 is the overall structure diagram of the lightweight cold-heading valve spring seat of the present invention;

FIG. 3 is a front view of the lightweight cold-heading valve spring seat of the present invention;

FIG. 4 is a cross-sectional view of the lightweight cold-heading valve spring seat of the present invention;

FIG. 5 is an overall structure diagram of a cold-heading revolving body valve spring seat which is widely applied at present;

FIG. 6 is a front view of a cold-heading revolving body valve spring seat which is widely applied at present;

FIG. 7 is a sectional view of a cold-heading rotary valve spring seat widely used at present.

Detailed Description

The present invention will be described with reference to specific embodiments.

As shown in fig. 1 to 4: a lightweight cold-heading valve spring seat, comprising: the cold-heading valve spring seat comprises a cold-heading valve spring seat 1, a valve spring 10 and a valve locking clamp 9, wherein three convex structures 2 are uniformly arranged on the outer ring of the cold-heading valve spring seat 1, and the three convex structures 2 are used for positioning the inner ring of the valve spring 10; the valve locking clamp further comprises an inner conical surface 3 attached to the valve locking clamp 9 and a mounting surface 4 pressed by the valve spring 10 in a contact manner; and the outer ring of the cold heading valve spring seat 1 is radially removed with the part of the materials 5 at intervals formed by the raised structures 2, and the removed part of the materials 5 are radially and uniformly distributed.

Specifically, lightweight cold-heading valve spring seat, including cold-heading valve spring seat 1 and the protruding structure 2 in outer lane that is used for valve spring 10 inner circle location, with the installation face 4 that the contact of the interior conical surface 3 and the valve spring 10 of the valve collet 9 laminating compressed tightly, this cold-heading valve spring seat 1 is not influencing cold-heading valve spring seat 1 location valve spring 10 inner circle function, and under satisfying the cold-heading valve spring seat 1 working strength and the rigidity condition, through reducing present widely used rotator structure's traditional valve spring seat 8 (as shown in fig. 5, and refer to fig. 6 and 7) local material reaches lightweight purpose.

The lightweight cold-heading valve spring seat 1 is provided with three convex structures 2 for positioning the inner ring of the spring, and the outer ring of each convex structure 2 is in small clearance fit with the inner ring of the valve spring 10, so that the positioning function of the valve spring 10 is realized; wherein, partial materials 5 at intervals of radial bulges on the outer ring of the cold heading valve spring seat 1 are removed, and the structures of the removed materials 5 are uniformly distributed in the radial direction. In order to realize further light weight, the uniformly distributed convex parts of the outer ring of the cold-heading valve spring seat 1 are uniformly distributed into chamfer angles 7 except for the uniformly distributed three convex structures 2 for realizing the positioning of the inner ring, and other convex right-angle parts 6 can be cut down. Adopt the utility model relates to a cold-heading valve spring seat quality reduces by about 25% ~ 30% than not isostructure big or small solid of revolution cold-heading valve spring seat quality, successfully realizes the lightweight target.

The foregoing is a detailed description of the invention in connection with specific embodiments thereof, and it is not intended that the invention be limited to these specific embodiments. To the utility model belongs to the technical field of technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses the scope of protection.

Claims

1. The utility model provides a lightweight cold-heading valve spring holder which characterized in that: the method comprises the following steps: the cold-heading valve spring seat comprises a cold-heading valve spring seat (1), a valve spring (10) and a valve locking clamp (9), wherein three convex structures (2) are uniformly arranged on the outer ring of the cold-heading valve spring seat (1), and the three convex structures (2) are used for positioning the inner ring of the valve spring (10); the valve locking clamp further comprises an inner conical surface (3) attached to the valve locking clamp (9) and a mounting surface (4) pressed by the valve spring (10) in a contact manner;

and the outer ring of the cold heading valve spring seat (1) is radially removed with the spaced partial material (5) formed by the raised structures (2), and the removed partial material (5) structures are radially and uniformly distributed.

2. The light-weight cold-heading valve spring seat according to claim 1, wherein: cold-heading valve spring seat (1) outer lane still equipartition has a plurality of convex parts, just convex part includes right angle portion (6), right angle portion (6) cut down to chamfer (7).

3. The light-weight cold-heading valve spring seat according to claim 1, wherein: the outer rings of the three convex structures (2) are in small clearance fit with the inner rings of the valve spring (10), so that the positioning function of the valve spring (10) is realized.