TWM392869U - Lift control structure of inlet/exhaust valve of engine - Google Patents

Description

M392869 V. New description: [New technical field] [0001] The present invention relates to a control structure of a gas valve head, and more particularly to a control structure for changing the lift height of a gas valve without a segment. [Prior Art] [0002] An internal combustion engine is a heat engine that converts thermal energy generated by combustion of a fuel into mechanical energy, and is usually composed of three major parts: a cylinder, a gas valve, and a piston, wherein the gas valve includes an intake valve. With the timing of opening and closing of the exhaust valve and the amount of lift that is opened, the amount of time and volume of gas injected into or discharged from the cylinder is controlled, thereby affecting the efficiency of the output mechanical energy of the internal combustion engine. [0003] The structure of a conventional air valve, for example, the Republic of China Invention Patent Publication No. 377755, discloses an improvement of a rocker arm device of an automobile engine variable valve system, which is disposed in an engine body and is used for controlling opening and closing of an engine air valve. The rocker arm device comprises a cam set, a rocker arm set, a sliding sleeve and an automatic hydraulic propulsion device, wherein the automatic hydraulic propulsion device can move the sliding sleeve to the left and right, so that the sliding sleeve is correspondingly engaged with the rocker arm In the group, the rocker arm set will be topped by the cam set to brake the engine air valve to open or close. The cam set has a low speed cam, a medium speed cam and a high speed cam, and the rocker arm has a low speed jaw rocker arm, a medium speed jaw rocker arm and a high speed jaw rocker arm. The low speed, medium speed, and high speed cams can respectively brake the low speed, medium speed, and high speed claw rocker arms, thereby controlling the head of the engine air valve to be low. [0004] With regard to the above prior art, if more head changes are required, the form number A0101, page 4/23, M392869, correspondingly increases the number of the cam and the claw rocker, and accordingly Increase the size of the engine. In addition, this segmented head change design 'there is no precise response to the change in speed between the head shifts', so that the fuel can not be effectively utilized, thus reducing the overall efficiency of the engine: 】

[0005] The main object of the present invention is to solve the problem that the valve control structure for a conventional internal combustion engine has a low fuel utilization efficiency by adjusting the lift height using a segmentation method.

[6] In order to achieve the above object, the present invention provides a control structure of a valve lift head for pressing at least one gas valve, the control structure comprising a first connecting member, an output member, a track, and a pendulum. a moving member, a second connecting member and a rotating member, the first connecting member comprising a first end portion and a second end portion, the first end portion being sleeved on a driving shaft for reciprocating displacement, and the first end portion The two ends are moved by the first turn. The output member is coupled to the first connecting member, the output member includes a linking end portion and a rotating end portion, the rotating end portion is sleeved with a control shaft, and the linking end portion is pivotally connected to the second end portion And the interlocking end portion has a first abutting surface and a second abutting surface that press against the air valve, and the first abutting surface is higher than the β first abutting surface. The track is inserted into the control shaft, and the output member has a first position for the interlocking end to press the first abutting surface against the air chamber and a second end of the interlocking end portion The junction presses against the second position of the weir valve. Further, the swinging member connects the first connecting member and the second connecting member, the swinging member includes a first swinging end portion, a swinging end portion, and a first swinging end portion and the second form number Α0101 5 pages/23 pages M392869 A rotating portion between the swinging ends, the first swinging end is coupled to the driving shaft, and the rotating portion is sleeved on a fixed shaft. The second connecting member includes a third end portion and a fourth end portion, and the third end portion and the second swing end portion are pivotally connected to each other. The rotating member is coupled to the second connecting member, the rotating member includes a driving end portion and a rotating end portion, the driving end portion and the fourth end portion are pivotally connected to each other, and the rotating end portion is sleeved on a driving axis. [0007] It can be seen from the above that the control structure of the novel air valve head has the beneficial effects achieved by the prior art: [0008] 1. Since the control shaft continuously changes its position in the way, the gas is controlled. The head change of the valve, so when the valve is between the high and low lifts, the head will be continuously adjusted in a stepless manner, so that the fuel can be more effectively converted into mechanical energy output, improving the operating efficiency of the internal combustion engine; [0009] Secondly, the present invention only needs to change the length of the track to correspondingly cause the valve to generate a larger or lower lift without having to increase or change the number or configuration of the cam and the claw arm as in the prior art. Therefore, the novel model can have greater design flexibility and at the same time has the advantage of simple structure. [Embodiment] [0010] The detailed description and technical content of the control structure of the air valve head of the present invention are described below with reference to the drawings. [0011] Please refer to "Fig. 1" to "Fig. 3" first. The front view of the control structure of the air valve head is a three-dimensional front view and a three-dimensional rear view. The schematic and the exploded view mainly include a first connecting member 10, a form number A0101, page 6 of 23, M392869

An output member 20 and a track 30, the first connecting member 10 is coupled to the output member 20, the first connecting member 10 includes a first end portion 11 and a second end portion 12, and the output member 20 includes An interlocking end portion 21 and a rotating end portion 22. The first end portion 11 is sleeved on a driving shaft 111, and the driving shaft 111 is reciprocally displaceable, and the second end portion 12 is moved in conjunction with the movement. The first connecting member 10 and the output member 20 are pivotally connected to the second end portion 12 and the interlocking end portion 21 via a shaft 121, and the rotating end portion 22 of the output member 20 is Rotatingly sleeved on a control shaft 221, the output member 20 is free to rotate. As shown in FIG. 2, the control shaft 221 is inserted into the rail 30. The rail 30 has a first end 31 and a second end 32. The control shaft 221 can be implemented in the rail 30. The displacement stroke causes the output member 20 to have a first position and a second position relative to the track 30. In the present embodiment, the first position and the second position are positions where the output member 20 is located when the control shaft 221 is located at the first end 31 and the second end 32 of the rail 30, respectively.

In the embodiment, in order to drive the driving shaft 111 to reciprocate, the first connecting member 10 is connected to a rotating member 70 through a swinging member 50 and a second connecting member 60. The swinging member 50 is connected to the rotating member 70. The first connecting member 60 includes a first swinging end portion 51, a second swinging end portion 52 and a rotating portion 53. The second connecting member 60 includes a third end portion 61 and a fourth end portion 62. The rotating member 70 includes a first end portion 61. The transmission end portion 71 and a rotating end portion 72. The first swinging end portion 51 is inserted into the driving shaft 111, and the rotating portion 53 is sleeved on a fixed shaft 531 and rotatable relative to the fixed shaft 531. The swinging member 50 and the second connecting member 60 are pivotally connected to the second swinging end portion 52 and the third end portion 61 by a shaft 611. The second connecting member form number A0101 is 7 And the rotating member 70 is inserted into the fourth end portion 62 and the transmission end portion 71 to be connected to each other by the shaft member 61, and the rotating end portion 72 of the rotating member 7〇 is sleeved. The drive shaft 721 can be a shaft center of a motor, and the rotating member 70 can rotate with the rotation of the drive shaft 721. [0013] When the drive shaft 721 is rotated, the swinging member 50 is reciprocally oscillated relative to the fixed shaft 531 through the second connecting member 60, and the output member 20 is rotated in conjunction with the interlocking end portion 21 The gas valve 40 is pressed against the valve 40 to move from a closed position to an open position. The valve 40 is composed of a pressure receiving portion 41, a valve stem 42 and a valve 43. The valve stem 42 is provided with an elastic member 421. The elastic member 421 can be a spring or other equivalent component for the gas. Valve 40 is reciprocally movable between the closed position and the open position. [0014] Next, please refer to FIG. 4-1 to FIG. 4-2, which is a schematic diagram of the operation of the output member in the first position in an embodiment of the control structure of the air valve head. The interlocking end portion 21 has a first abutting surface 211, a transition abutting surface 212, and a second abutting surface 213'. The first abutting surface 211 is higher than the second abutting surface 213, and the transition is The connecting surface 212 is disposed between the first abutting surface 211 and the second abutting surface 213, and the linking end portion 21 can be abutted by the first abutting surface 211, the second abutting surface 213 or the transition The face 212 presses against the gas valve 40. When the drive shaft 721 is not rotated, the output member 2 is not pressed against the air valve 40, and the pressure receiving portion 41 is at an initial position 0. When the drive shaft 721 is rotated, the first swinging end portion 51 of the swinging member 50 is displaced up and down, and thus the driving shaft II1 and the first end portion 11 are interlocked. At the same time, the output member 20 will rotate relative to the control shaft 21, so that the linked end portion 21 swings up and down the form number Α0101, page 8 / 23 pages, M392869, as shown in FIG. 4-2, the linkage end The portion 21 presses the pressure receiving portion 41 of the air valve 40 with the first abutting surface 211, and moves the pressure receiving portion 41 to a high lift position Η. At this time, the gas valve 40 is at a higher head. One open position

[0015] Please refer to FIG. 5-1 to FIG. 5-2 again. In an embodiment of the control structure of the air valve head of the present invention, an operation diagram of the output member in the second position is used as the air valve. When the lower head is required for 40, the control shaft 221 can be moved to the second end 32 of the track 30. When the drive shaft 721 is not rotated, the output member 20 will also be at the initial position 0. Once the drive shaft 721 is rotated, the first swinging end portion 51 of the swinging member 50 is also displaced up and down, and the tilting shaft 111 and the first end portion 11 are connected. The output member 20 is rotated relative to the control shaft 221 such that the interlocking end portion 21 swings up and down. Since the output member 20 is moved from the first position to the second position, the movement state of the driving shaft 111 is not affected thereby, because the first connecting member 10 has moved with the movement of the output member 20. The right side is deflected, so that the radius of rotation of the output member 20 is small, so that the interlocking end portion 21 presses the pressure receiving portion 41 of the air valve 40 with the second abutting surface 213, and moves the pressure receiving portion 41 to A low lift position L, the gas valve 40 is in a second open position with a lower lift. [0016] As can be seen from the above, when the control shaft 221 is respectively located at the first end % 31 and the second end 32 of the rail 30, the rotation of the rotating member 70 will drive the first connecting member 10, so that the output The member 20 presses the gas valve 40 with the first abutting surface 211; or presses the gas valve 40 with the second abutting surface 213. With the resilient force provided by the elastic member 421, the air valve 40 can be in the closed position and the first open position; or the closed position and the second open form number Α0101 9th page/total 23 pages M392869 Switch back and forth between positions. In addition, when the control shaft 221 is located at the position between the first end 31 and the second end 32 of the rail 30, the output member 20 will press the air valve 40 with the transition abutting surface 212, so that The pressure receiving portion 41 moves to a position between the high head position Η and the low head position L. Therefore, under the operation in which the control shaft 221 performs the displacement stroke and the interlocking end portion 22 continues to be displaced, the pressure receiving portion 41 continuously changes its high and low positions in a stepless manner. [0017] In the present embodiment, the control structure is suitable for use with an internal combustion engine 80. As shown in FIG. 6, a control structure of the air valve head of the present invention is applied to the internal combustion engine. The internal combustion engine 80 includes A cylinder 81, an air inlet 8 2 and an air outlet 8 3s allow the air inlet 82 and the air outlet 83 to communicate with the cylinder 81, respectively. The number of the gas valves 40 is two sets and is respectively installed in the air inlet 82 and the air outlet 83, and is respectively opened or closed by the action of the two control structures. [0018] In summary, the control structure of the air valve head of the present invention is mainly that the control shaft is disposed in the track, and the relative position of the output member and the rotation stroke thereof are changed by adjusting the position of the control shaft, and then Control the lift level of the valve. Since the control shaft can be continuously moved in the track, the head of the gas valve will also be continuously changed, whereby the head can be continuously adjusted without a step when the valve is between the high and low lifts. When applied to an internal combustion engine, it will make the fuel more efficiently converted into mechanical energy output, improving the operating efficiency of the internal combustion engine. In addition, the control structure of the air valve head of the present invention does not need to use a complicated mechanism design, and only the control shaft can be used to match the operation of the track, and the stepless switching of the valve head can be achieved. Form No. A0101 Page 10 [0019] [0023] [0029] [0029] [0029] [0029] [0029] The above has been described in detail, However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited. That is, the equal changes and modifications made in accordance with the scope of this new application shall remain within the scope of the patent of this new type. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front perspective view showing an embodiment of a control structure for a valve head of the present invention. Fig. 2 is a perspective view showing the rear view of an embodiment of the control structure of the air valve head of the present invention. Fig. 3 is an exploded perspective view showing an embodiment of a control structure for a valve head of the present invention. FIG. 4-1 to FIG. 4-2 are schematic diagrams showing the operation of the output member in the first position in an embodiment of the control structure of the valve head of the present invention. FIG. 5-1 to FIG. 5-2 are schematic diagrams showing the operation of the output member in the second position in an embodiment of the control structure of the air lift head of the present invention. Fig. 6 is a schematic view showing an embodiment of a control structure for a valve head of the present invention applied to the internal combustion engine. [Description of main component symbols] 10 ............. First connecting member 11 . . ....... First end portion 111....... ... drive the shaft 12..................Second end form number A0101 Page 11 of 23 M392869 [0030] [0032] [0033] [ [0035] [0037] [0038] [0038] [0044] [0044] [0044] [004] [0048] [0048] [0048] 121. 21 . 211 212 213 22 _ 221 30 . 31 32 40 . 41 _ 42 . Output member interlocking end • First abutment surface • Transition abutment surface • Second abutment surface rotating end • Control shaft track first end Second end air valve pressure receiving valve stem 421 43 Elastic member valve 50.................. Swinging member 51 ............. First swinging end 52 .............Second swing end form number A0101 Page 12 of 23 M392869

[0058] [0058] [0056] [0058] [0060] [0063] [0063] 53 · 531 · 60 · 61 · 611 · 62 · 621 · 70 · 71 · 72 · 721 · 80 · 81 · 82 · 83 · • Rotating part • Fixed shaft • Second connecting member • Third end • Shaft. Fourth end • Shaft • Rotating member • Drive end • Rotating end • Drive shaft • Internal combustion engine • Cylinder. Air inlet • Exhaust port form No. A0101 Page 13 of 23

Claims (1)

M392869 VI. Patent application scope: 1. A control structure of a valve lift head for pressing at least one gas valve, the control structure comprising: a first connecting member, comprising a set of driving shafts disposed on a reciprocating displacement a first end portion and a second end portion coupled to the first end portion; and an output member coupled to the first connecting member, the output member including a linking end pivotally coupled to the second end portion And a rotating end portion disposed on a control shaft, the interlocking end portion having a first abutting surface and a second abutting surface for pressing the air valve, the first receiving surface being higher than the second portion Abutting surface of a track for the control shaft to be inserted, the output member having a first end position of the interlocking end against the gas valve with the first abutting surface and the interlocking end portion The second abutting surface presses against the second position 9 of the air valve, and the swinging member is connected to the first connecting member. The swinging member includes a first swinging end portion pivotally connected to the driving shaft. a second swing end and a first swing end a rotating portion between the second swinging end portions and sleeved on a fixed shaft; a second connecting member connected to the swinging member, the second connecting member including a second pivoting end portion a third end portion and a fourth end portion; and a rotating member coupled to the second connecting member, the rotating member including a transmission end portion pivotally coupled to the fourth end portion and a set of a drive shaft Rotating end. 2. The control structure of the air valve head according to the first application of the patent scope, wherein the 099212277 form number A0101 page 14 / 23 pages 0992037299-0 M392869 the interlocking end further comprises a first abutting surface a transition abutting surface with the second abutting surface. 3. The control structure of the air lift head according to claim 1, wherein the air valve includes a pressure receiving portion that is pressed by the interlocking end portion, a valve stem that connects the pressure receiving portion, and a valve body a valve stem opposite the valve at one end of the pressure receiving portion. 4. The control structure of a valve lift head according to claim 3, wherein the valve stem is provided with an elastic member for reciprocating movement of the valve between an open position and a closed position. 5. The control structure of the air valve head according to claim 1, wherein the air valve has a first open position that is pressed by the first abutting surface and a second abutting surface that is pressed by the second abutting surface. a second open position, the second open position being higher than the first open position. 099212277 Form No. A0101 Page 15 of 23 0992037299-0