CN212716794U

CN212716794U - Mechanical tappet mechanism

Info

Publication number: CN212716794U
Application number: CN202021586787.1U
Authority: CN
Inventors: 李琼琼; 王俊
Original assignee: Bengbu Guangrui Machinery Co ltd
Current assignee: Bengbu Guangrui Machinery Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-03-16
Anticipated expiration: 2030-08-04

Abstract

The utility model discloses a mechanical tappet mechanism relates to and belongs to automobile engine valve train control technical field. The utility model discloses a casing, the casing be provided with towards bottom open-ended cavity, be provided with in the cavity along the gliding impeller of its inner wall to separate into confined oil pocket with the cavity and towards bottom open-ended installation cavity, one side that is located the oil pocket is provided with an oil inlet that runs through the casing, and an oil transportation device is connected to the oil inlet, and oil transportation device is through there being oil pipe connection director. The utility model discloses structural design's is simpler, and the stability in the operation process is corresponding improvement also, and compares and can only realize stopping jar and two kinds of modes of normal work in prior art, and this application has realized the stepless control valve lift.

Description

Mechanical tappet mechanism

Technical Field

The utility model belongs to the technical field of automobile engine valve train control, especially, relate to a mechanical tappet mechanism.

Background

With the increasing popularization of energy conservation and environmental protection concepts, the energy conservation and emission reduction of automobiles are increasingly emphasized, and the variable valve lift technology of the engine is an effective means for realizing the energy conservation and emission reduction of the automobiles. In order to deal with the climbing and accelerating working conditions, the power of the engine is surplus, so that the power of the engine is greatly wasted when the automobile runs at low speed, and the lift range of the valve can be changed by the variable valve lift range technology of the engine under different working conditions, so that the power of the engine is changed, the power of the engine can be fully utilized, the fuel consumption can be reduced, the exhaust emission can be reduced, and the effects of energy conservation and environmental protection can be achieved. In the existing valve lift technology, a tappet is usually connected and separated with and from a support by a lock pin, and only two modes of cylinder deactivation and normal work can be realized, so that the applicability is poor; and the mode of returning the lock pin by the resilience of the spring has lower reliability and is easy to cause problems

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical tappet mechanism to solve the technical problem among the prior art, it can realize the stepless control valve lift.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a mechanical tappet mechanism, which comprises a shell, wherein the shell is provided with a cavity which is opened towards the bottom end, a pushing piece which slides along the inner wall of the cavity is arranged in the cavity and divides the cavity into a closed oil cavity and an installation cavity which is opened towards the bottom end, one side of the oil cavity is provided with an oil inlet which penetrates through the shell, the oil inlet is connected with an oil conveying device, and the oil conveying device is connected with a controller through an oil pipe;

the oil conveying device comprises a cylinder body with an opening at one end, an oil outlet connected with an oil inlet is arranged at the bottom end of the cylinder body, a limiting ring is arranged at the opening end of the cylinder body, a piston capable of sliding along the inner wall of the cylinder body is arranged in the cylinder body, a through hole is formed in the piston, and an oil inlet pipe capable of being communicated with an oil pipe is connected to the through hole;

the controller comprises a shell, wherein one end of the shell is provided with an oil inlet hole communicated with an oil pipe and an oil outlet hole communicated with an oil supply system;

the other end of the shell is provided with a first electromagnet, and the first electromagnet is connected with a second electromagnet through a telescopic guide mechanism; the first electromagnet comprises a first iron core, a first conductive winding is wound on the outer side of the first iron core, the second electromagnet comprises a second iron core, and a second conductive winding is wound on the outer side of the second iron core; the end part of the second electromagnet is connected with a push rod, and a piston body capable of sliding along the inner wall of the shell is arranged at the end part of the push rod.

Furthermore, a valve spring is arranged in the mounting cavity, one end of the valve spring is propped against the bottom end of the pushing piece, and the other end of the valve spring is propped against the cylinder cover.

Furthermore, a return spring is arranged at the top ends of the pushing piece and the cavity, one end of the return spring is fixed at the top end of the pushing piece, and the other end of the return spring is fixed on the cavity.

Furthermore, the inner side walls of the shell at the oil inlet and the oil outlet are provided with a convex edge; the end of the piston body is provided with a groove matched with the convex edge, and the bottom of the groove is provided with a sealing gasket.

Furthermore, a channel is arranged in the first iron core, an outer guide sleeve is arranged in the channel, an inner guide sleeve is arranged in the outer guide sleeve, and the end part of the inner guide sleeve is fixed at one end of the second iron core.

Further, the power supply device also comprises a first power supply and a second power supply;

the positive electrode and the negative electrode of the first power supply are respectively connected with two ends of the second conductive winding through a wire I; a single-pole single-throw switch is arranged on one of the first conducting wires;

the positive electrode of the second power supply and the negative electrode of the first power supply are respectively connected to one end of the first conductive winding through a second lead, and the other end of the first conductive winding is connected with the movable end of a single-pole double-throw switch; and two fixed ends of the single-pole double-throw switch are respectively and electrically connected with the cathode of the second power supply and the anode of the first power supply through a third wire.

Furthermore, the first lead is a telescopic wire; the shell is provided with a through hole for the first wire, the second wire and the third wire to penetrate through near the end provided with the iron core, and a rubber sleeve is arranged at the through hole.

The utility model discloses following beneficial effect has:

the utility model discloses a change the position of the oily hydraulic control impeller of impeller upside oil intracavity on the casing to the power of change effect on the valve stem, in order to realize opening or closing the accuse of degree to the valve, structural design is simpler, the also corresponding improvement of stability in the operation process, can realize the regulation of multistate moreover, can adjust according to actual need and increase the suitability. Compared with the prior art that only two modes of cylinder deactivation and normal operation can be realized, the stepless control valve lift is realized.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a mechanical tappet mechanism of the present invention;

FIG. 2 is a schematic diagram of a controller according to the present invention;

FIG. 3 is a schematic structural view of the oil transportation device of the present invention;

fig. 4 is a schematic diagram of the first electromagnet and the second electromagnet of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention relates to a mechanical tappet mechanism, which includes a housing 1, the housing 1 is provided with a cavity 11 opened toward the bottom end, a pushing member 13 sliding along the inner wall of the cavity 11 is provided in the cavity 11, and divides the cavity 11 into a closed oil cavity and an installation cavity opened toward the bottom end, one side of the oil cavity is provided with an oil inlet 14 penetrating through the housing 1, the oil inlet 14 is connected with an oil transportation device 2, the oil transportation device 2 is connected with a controller 3 through an oil pipe 15;

the oil conveying device 2 comprises a cylinder 21 with an opening at one end, an oil outlet 22 connected with the oil inlet 14 is arranged at the bottom end of the cylinder 21, a limiting ring 23 is arranged at the opening end of the cylinder 21, a piston 24 capable of sliding along the inner wall of the cylinder 21 is arranged in the cylinder 21, a through hole 25 is arranged on the piston 24, and an oil inlet pipe 26 capable of being communicated with the oil pipe 15 is connected to the through hole 25;

the controller 3 comprises a shell 31, wherein one end of the shell 31 is provided with an oil inlet 32 communicated with the oil pipe 15 and an oil outlet 33 communicated with an oil supply system;

the other end of the shell 31 is provided with a first electromagnet which is connected with a second electromagnet through a telescopic guide mechanism; the first electromagnet comprises a first iron core 34, a first conductive winding 344 is wound on the outer side of the first iron core 34, the second electromagnet comprises a second iron core 35, and a second conductive winding 351 is wound on the outer side of the second iron core 35; the end of the second electromagnet is connected with a push rod 36, and the end of the push rod 36 is provided with a piston body 37 which can slide along the inner wall of the shell 31. The telescoping guiding mechanism comprises an inner guiding sleeve 343 and an outer guiding sleeve 342.

Preferably, a valve spring is arranged in the mounting cavity, one end of the valve spring is pressed against the bottom end of the pushing piece 13, and the other end of the valve spring is pressed against the cylinder cover.

Preferably, the pushing member 13 and the top end of the cavity 11 are further provided with a return spring 12, one end of the return spring 12 is fixed on the top end of the pushing member 13, and the other end is fixed on the cavity 11.

Preferably, a convex edge 321 is arranged on the inner side wall of the shell 31 at the oil inlet 32 and the oil outlet 33; the tip of piston body 37 is provided with the recess 371 with protruding edge 321 cooperation, and the bottom of recess 371 sets up sealed the pad 372, through protruding edge 321, recess 371 and the sealed pad 372 three's cooperation, avoids blockking up inlet port 32 and oil outlet 33 back at piston body 37, because there is the clearance and takes place the oil leak.

Preferably, a channel 341 is arranged in the first iron core 34, the channel 341 is provided with an outer guiding sleeve 342, an inner guiding sleeve 343 is arranged in the outer guiding sleeve 342, and the end of the inner guiding sleeve 343 is fixed at one end of the second iron core 35.

Preferably, the power supply further comprises a first power supply 4 and a second power supply 5;

wherein, the positive pole and the negative pole of the power supply I4 are respectively connected with the two ends of the conductive winding II 351 through a wire I; a single-pole single-throw switch 7 is arranged on one wire I;

the positive pole of the second power supply 5 and the negative pole of the first power supply 4 are respectively connected with one end of the first conductive winding 344 through a second lead, and the other end of the first conductive winding 344 is connected with the moving end of a single-pole double-throw switch 6; two fixed ends of the single-pole double-throw switch 6 are respectively and electrically connected with the cathode of the power supply II 5 and the anode of the power supply I4 through three leads.

Preferably, the first wire is a retractable wire; one end of the shell 31 close to the iron core I34 is provided with a through hole 38 for the first wire, the second wire and the third wire to pass through, and a rubber sleeve 381 is arranged at the through hole 38.

The use of the controller 3, including when both the first 344 and second 351 conductive windings are energized, and when the second 351 conductive winding is energized with the second power supply 5 through the single pole single throw switch 7; at the moment, the directions of magnetic fields generated by the near ends of the first electromagnet and the second electromagnet are opposite, the first electromagnet and the second electromagnet generate an attraction effect, so that the first electromagnet and the second electromagnet are controlled to move towards one side close to the second electromagnet, the piston body 37 moves under the action, and the oil outlet hole 33 is communicated with the oil inlet hole 32, so that oil can be supplied to the oil cavity;

when the single-pole single-throw switch 7 is controlled to connect the second conductive winding 351 with the first power supply 4, the directions of magnetic fields generated by the first electromagnet and the second electromagnet at the near end are the same, the first electromagnet and the second electromagnet generate repulsion action at the moment, so that the electromagnet is controlled to move towards the side far away from the second electromagnet, the piston body 37 moves under the action of the repulsion, and the piston body 37 blocks the oil outlet 33 and the oil inlet 32, so that oil supply to the oil cavity is stopped.

Meanwhile, due to the design of the return spring 12, the oil chamber generates upward tensile force on the pushing piece 13 in the pressure relief process, the return of the return spring 12 is facilitated, the return spring 12 also effectively controls the upward movement position of the pushing piece 13, when the return spring 12 is compressed to the maximum, the pushing piece 13 is lifted to the maximum position, and the situation that the hydraulic oil cannot be applied after the oil chamber is completely compressed is avoided.

The phenomenon that the spring is damaged due to long-term compression reset when the spring generates acting force is avoided by changing the direction of a magnetic field of an electromagnet to generate driving force.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a machinery tappet mechanism which characterized in that: the oil-saving device comprises a shell (1), wherein the shell (1) is provided with a cavity (11) which is opened towards the bottom end, a pushing piece (13) which slides along the inner wall of the cavity (11) is arranged in the cavity (11), the cavity (11) is divided into a closed oil cavity and an installation cavity which is opened towards the bottom end, one side of the oil cavity is provided with an oil inlet (14) which penetrates through the shell (1), the oil inlet (14) is connected with an oil conveying device (2), and the oil conveying device (2) is connected with a controller (3) through an oil pipe (15);

the oil conveying device (2) comprises a cylinder body (21) with an opening at one end, an oil outlet (22) connected with an oil inlet (14) is formed in the bottom end of the cylinder body (21), a limiting ring (23) is arranged at the opening end of the cylinder body (21), a piston (24) capable of sliding along the inner wall of the cylinder body (21) is arranged in the cylinder body (21), a through hole (25) is formed in the piston (24), and an oil inlet pipe (26) capable of being communicated with an oil pipe (15) is connected to the through hole (25);

the controller (3) comprises a shell (31), wherein one end of the shell (31) is provided with an oil inlet hole (32) communicated with the oil pipe (15) and an oil outlet hole (33) communicated with an oil supply system;

the other end of the shell (31) is provided with a first electromagnet, and the first electromagnet is connected with a second electromagnet through a telescopic guide mechanism;

wherein the electromagnet I comprises an iron core I (34), the outer side of the iron core I (34) is wound with a conductive winding I (344),

the second electromagnet comprises a second iron core (35), and a second conductive winding (351) is wound on the outer side of the second iron core (35);

the end part of the second electromagnet is connected with a push rod (36), and the end part of the push rod (36) is provided with a piston body (37) capable of sliding along the inner wall of the shell (31).

2. A mechanical lifter mechanism according to claim 1, characterized in that a valve spring is mounted in the mounting chamber, one end of the valve spring bearing against the bottom end of the push member (13) and the other end bearing against the cylinder head.

3. A mechanical tappet mechanism according to claim 1, characterised in that a return spring (12) is provided between the pushing member (13) and the top end of the cavity (11), one end of the return spring (12) being fixed to the top end of the pushing member (13) and the other end being fixed to the cavity (11).

4. The mechanical tappet mechanism of claim 1, wherein a convex edge (321) is arranged on the inner side wall of the outer casing (31) at the oil inlet (32) and the oil outlet (33);

the end of the piston body (37) is provided with a groove (371) matched with the convex edge (321), and the bottom of the groove (371) is provided with a sealing gasket (372).

5. A mechanical tappet mechanism according to claim 1, wherein a channel (341) is provided in the first plunger (34), and the channel (341) is provided with an outer guiding sleeve (342), and an inner guiding sleeve (343) is provided in the outer guiding sleeve (342), and the end of the inner guiding sleeve (343) is fixed to one end of the second plunger (35).

6. The mechanical tappet mechanism of claim 1, further comprising a first power source (4) and a second power source (5);

the positive electrode and the negative electrode of the power supply I (4) are respectively connected with two ends of the conductive winding II (351) through a lead wire I; a single-pole single-throw switch (7) is arranged on one of the first conducting wires;

the positive pole of the second power supply (5) and the negative pole of the first power supply (4) are respectively connected with one end of the first conductive winding (344) through a second lead, and the other end of the first conductive winding (344) is connected with the movable end of a single-pole double-throw switch (6);

two fixed ends of the single-pole double-throw switch (6) are respectively and electrically connected with the negative electrode of the power supply II (5) and the positive electrode of the power supply I (4) through a conducting wire III.

7. The mechanical tappet mechanism of claim 6, wherein the first wire is a retractable wire; the shell (31) is provided with through-hole (38) that supplies wire one, wire two and wire three to run through the through-hole (381) near the one end that is provided with iron core one (34), through-hole (38) department is provided with rubber sleeve (381).