CN214330716U

CN214330716U - VVL mechanism is with middle push rod and VVL mechanism

Info

Publication number: CN214330716U
Application number: CN202120447845.0U
Authority: CN
Inventors: 伍绍奎
Original assignee: Yibin Tiangong Machinery Co ltd
Current assignee: Yibin Tiangong Machinery Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-10-01
Anticipated expiration: 2031-03-02

Abstract

The utility model discloses a VVL mechanism is with middle push rod and VVL mechanism belongs to the energy-conserving technical field of engine, including two curb plates that all have top pinhole and middle part pinhole, be connected with between two curb plates and connect the face, connect the inside bending type of one end that the top pinhole was kept away from to the face and form the torsional spring holding surface, and connect the face outside and still have the work curved surface. The utility model has simple structure and high production efficiency, not only saves raw materials, but also greatly reduces the weight of the product, and can realize the high-speed and reliable movement of the VVL mechanism; and simultaneously, the utility model discloses a shaping structure after steel band punching press, buckle many times makes the utility model discloses a processing is more simplified, makes production efficiency improve greatly.

Description

VVL mechanism is with middle push rod and VVL mechanism

Technical Field

The utility model belongs to the technical field of the engine is energy-conserving, particularly, relate to a VVL mechanism is with middle push rod and VVL mechanism.

Background

Variable Valve Lift (VVL), the valve lift of a conventional gasoline engine is fixed and invariable, and the fixed valve lift engine cannot obtain optimal performance and emission in both a high speed region and a low speed region. The valve lift of a traditional gasoline engine is selected for the balance of the engine under all working conditions, and as a result, the engine cannot obtain the best high-speed efficiency and the best low-speed torque, but obtains the most balanced performance under all working conditions. The adoption of VVL ensures that the engine can obtain the valve lift meeting the requirements in a high-speed area and a low-speed area, thereby improving the high-speed power and the low-speed torque of the engine.

Currently, VVL is classified into segmented adjustable type and continuous adjustable type according to its control effect. The adjustable engine has the advantages that the air inlet efficiency is improved by adopting the long stroke in the segmented adjustable mode when the engine rotates at a high speed, the engine can breathe more smoothly, larger air inlet negative pressure and more vortexes can be generated by adopting the short stroke in the low speed, air and fuel oil are fully mixed, and accordingly the torque output in the low speed is improved. The continuous adjustable valve lift can be continuously changed under most working conditions of the engine, and optimal valve lift matching is guaranteed, so that optimal performance is obtained.

The existing intermediate push rod body for the VVL mechanism is manufactured by silica sol precision casting or powder injection molding, so that the blank manufacturing efficiency is low, the cost is high, the product weight is large, and the movement speed of the VVL mechanism is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a VVL mechanism is with middle push rod and VVL mechanism, simple structure, production efficiency are high, have not only practiced thrift raw and other materials, and make product weight reduce greatly, can realize the high-speed reliable motion of VVL mechanism.

For realizing the purpose of the utility model, the technical proposal adopted is that: the utility model provides a VVL is middle push rod for mechanism, is connected with the connection face including two curb plates that all have top pinhole and middle part pinhole between two curb plates, connects the one end of keeping away from top pinhole and inwards buckles and form the torsional spring holding surface to the inboard, and connects the face outside and still have the work curved surface.

In some embodiments, the height of the connection surface near one end of the top pin hole is less than the height of the top pin hole.

In some embodiments, a reinforcing rib is further connected between the two side plates, and the reinforcing rib is positioned at the opposite side of the connecting surface.

In some embodiments, both ends of the stiffener are located in the middle of the side plate.

In some embodiments, the reinforcing rib comprises two unit bodies which are welded oppositely, and the two unit bodies are integrally fixed with the two side plates respectively.

In some embodiments, the side plate and the connecting surface are of a unitary structure.

In some embodiments, the side plates and the connecting surfaces are formed by stamping and bending the steel strip for multiple times.

In some embodiments, the top pin hole and the middle pin hole are both stamped and formed holes.

In some embodiments, the angled end of the joint face and the two side plates together form a concave indentation.

In some embodiments, the side plate is arc-shaped, the middle pin hole is located in the middle of the side plate, and the top pin hole and the inclined end of the connecting surface are located at two ends of the side plate respectively.

A VVL mechanism comprising an intermediate push rod as described above.

The utility model has the advantages that,

1. the utility model discloses simple structure, processing convenience have practiced thrift raw and other materials, make product weight reduce greatly, make production efficiency higher, can realize the high-speed reliable motion of VVL mechanism.

2. Through setting up the strengthening rib, make the utility model discloses a rigidity obtains guaranteeing, makes the utility model discloses a quality obtains guaranteeing.

3. Because curb plate, connection face for the steel band punching press, buckle the shaping structure after many times, make the utility model discloses a processing is more simplified, makes production efficiency improve greatly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a structural diagram 1 of an intermediate push rod for a VVL mechanism according to the present invention;

fig. 2 is a structural diagram 2 of the intermediate push rod for the VVL mechanism according to the present invention.

Reference numbers and corresponding part names in the drawings:

1. the structure comprises side plates, 2, a connecting surface, 3, a middle pin hole, 4, a top pin hole, 5, a torsional spring supporting surface, 6, a working curved surface, 7 and reinforcing ribs.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention. It should be noted that, for convenience of description, only the parts related to the present invention are shown in the drawings.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, the utility model provides a pair of middle push rod is used to VVL mechanism, including two curb plates 1 of arranging relatively, all have top pinhole 4 and middle part pinhole 3 on two curb plates 1, top pinhole 4 and middle part pinhole 3 are all accomplished through machining, and two middle part pinholes 3 are used for installing bearing jointly, make bearing and drive wheel contact, two top pinholes 4 are connected with VVL mechanism fixed pin jointly.

A connecting surface 2 is connected between the two side plates 1, two sides of the connecting surface 2 are connected with the same side of the two side plates 1, the connecting surface 2 and the two side plates 1 jointly form a city-surrounding U-shaped structure, one end, far away from the top pin hole 4, of the connecting surface 2 is bent towards the inner sides of the two side plates 1 in an arc manner, the bent part of the connecting surface 2 forms a torsion spring supporting surface 5, and the bent part of the connecting surface 2 and the inner walls of the two side plates 1 jointly form a groove structure for installation and limiting of a return torsion spring; connect 2 outer walls of face still to have work curved surface 6, work curved surface 6 passes through stamping forming, and work curved surface 6 is close to the kink of connecting face 2, makes return spring when the installation, and the extension at return spring both ends can support and lean on work curved surface 6, makes return spring's installation more firm.

The middle push rod for the VVL mechanism in the embodiment can be machined only by stamping, bending, welding and other procedures in the production process, so that the machining steps are simplified, the production is more convenient, and the production efficiency is greatly improved; because be hollow structure between two curb plates 1, not only practiced thrift material cost, and made product weight reduce greatly, make the utility model discloses can realize the high-speed reliable motion of VVL mechanism.

In some embodiments, the height of the end, close to the top pin hole 4, of the connecting surface 2 is lower than that of the top pin hole 4, so that the connecting surface 2 is ensured to be connected with the fixing pin of the VVL mechanism, the material consumption of the connecting surface 2 is reduced, the material cost is reduced, and the weight of the product is reduced as much as possible.

In some embodiments, a reinforcing rib 7 is further connected between the two side plates 1, and the reinforcing rib 7 is located on the opposite side of the connecting surface 2, so that not only can the other side of the two side plates 1 be supported more stably by the reinforcing rib 7, but also the other side of the two side plates 1 is prevented from inclining to the middle, and the rigidity of the product and the quality of the product are ensured.

In some embodiments, both ends of the reinforcing rib 7 are located in the middle of the side plate 1, so that the rigidity of the middle of the product is higher, and the structure of the product is more stable in the using process.

In some embodiments, the strengthening rib 7 includes two relative welded cell cube, and two cell cube are the column, and two cell cube are fixed as an organic whole with two curb plates 1 respectively, make the product can remain two cell cube in the course of working, then buckle two cell cube, make two cell cube butt joints, then to two cell cube welding, not only reduced strengthening rib 7 welding points, and make the connection between strengthening rib 7 and the curb plate 1 more firm, make the quality of product better, make the life of product obtain the guarantee.

In some embodiments, the strengthening rib 7 in this embodiment can also be a cylinder, and at this moment, both ends of the strengthening rib 7 respectively with two curb plate 1 edge weld can, make strengthening rib 7 and two curb plate 1 also constitute a body structure, at this moment, the both ends of strengthening rib 7 all need welded fastening, increased the welding point, not only make the utility model discloses a processing is more complicated, and makes the junction intensity between strengthening rib 7 and the curb plate 1 be difficult to obtain the assurance.

In some embodiments, curb plate 1, connection face 2 structure as an organic whole, promptly, this product is an overall structure after production and processing accomplishes, has guaranteed the steadiness of product structure, makes the quality of product obtain guaranteeing, simultaneously, because be the fretwork form between two curb plates 1, makes the weight of product self reduce greatly, makes the high-speed reliable motion of VVL mechanism can be realized to the product.

In some embodiments, the side plate 1 and the connecting surface 2 are an integral steel belt before being processed, and after the punching and pressing, the steel belt is provided with a top pin hole 4, a middle pin hole 3 and unit bodies, a notch is punched on both sides of the bending end of the connecting surface 2, the bending part of the connecting surface 2 is torn, then the two side plates 1 and the two unit bodies are bent in sequence, and finally the two unit bodies are welded, so that the production of a product is completed.

In some embodiments, the top pin hole 4 and the middle pin hole 3 are both punched holes, so that the top pin hole 4 and the middle pin hole 3 can be machined more conveniently.

In some embodiments, the inclined end of the connecting surface 2 and the two side plates 1 jointly form a concave notch, the inner walls of the two side plates 1 are side walls of the concave notch, and the inclined section of the connecting surface 2 forms the bottom of the concave notch, so that when the return spring is installed, the two ends of the return spring are respectively supported on the inner walls of the two side plates 1, the two ends of the return spring are limited, and the stability of the return spring is ensured.

In some embodiments, the side plate 1 is arc-shaped, the middle pin hole 3 is located in the middle of the side plate 1, and the top pin hole 4 and the inclined end of the connecting surface 2 are located at two ends of the side plate 1 respectively.

In some embodiments, still can be earlier alone through stamping forming with two curb plates 1 in this embodiment, then to connecting face 2 through the punching press, shaping after buckling, last with two curb plates 1 with connect face 2 welded fastening can, make the product after the machine-shaping also be overall structure, this kind of embodiment has only increased the manufacturing procedure of middle push rod, and simultaneously, because curb plate 1 is welded fastening with connecting face 3, can make curb plate 2 and the intensity of connecting the face 2 welding department receive the influence, be difficult to reach curb plate 1 and connect face 2 through the punching press, the intensity of the middle push rod of shaping of buckling.

A VVL mechanism comprising an intermediate push rod as described in any of the embodiments above.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are provided for clarity of description only, and are not intended to limit the scope of the invention. Other variations or modifications will occur to those skilled in the art based on the foregoing disclosure and are still within the scope of the invention.

Claims

1. The utility model provides a VVL is middle push rod for mechanism, its characterized in that, including two curb plates (1) that all have top pinhole (4) and middle part pinhole (3), be connected with between two curb plates (1) and connect face (2), connect the one end of face (2) keeping away from top pinhole (4) to inside bending type and form torsional spring holding surface (5), and connect the face (2) outside still to have work curved surface (6).

2. Intermediate tappet for a VVL mechanism according to claim 1, characterised in that the connecting surface (2) is at a lower level than the top pin hole (4) at the end adjacent to the top pin hole (4).

3. Intermediate push rod for VVL mechanisms according to claim 1, characterized in that a reinforcing rib (7) is further connected between the two side plates (1), and the reinforcing rib (7) is located on the opposite side of the connecting surface (2).

4. Intermediate push rod for VVL mechanisms according to claim 3, characterized in that both ends of the reinforcing rib (7) are located in the middle of the side plate (1).

5. Intermediate push rod for VVL mechanisms according to claim 3 or 4, characterized in that said reinforcing rib (7) comprises two unit bodies welded to each other, and said two unit bodies are fixed integrally to said two side plates (1), respectively.

6. The intermediate push rod for VVL mechanism according to claim 1, wherein the side plate (1) and the connecting surface (2) are of an integral structure.

7. The middle pushrod for VVL mechanism according to claim 1, wherein the side plate (1) and the connecting surface (2) are formed by stamping a steel strip and bending the steel strip several times.

8. The intermediate push rod for VVL mechanism according to claim 1, wherein the top pin hole (4) and the middle pin hole (3) are both stamped holes.

9. Intermediate tappet for a VVL mechanism according to claim 1, characterised in that the inclined end of the connection surface (2) forms a concave indentation together with the two side plates (1).

10. A VVL mechanism comprising the intermediate push rod according to any one of claims 1 to 9.