A valve lifter device

Abstract

The present invention relates to the technical field of automobile equipment, and specifically to a valve tappet device, including a cam, a hydraulic tappet, a valve and a rocker mechanism, wherein the outer side wall of the cam contacts one end of the hydraulic tappet, the other end of the hydraulic tappet is fixedly connected to a tappet, and one end of the tappet is fixedly connected to a limiting ball. In the present invention, by respectively arranging a round block and a fixed rod at both ends of the adjustment unit, and by rotating the connecting plate, the torsion shell, the rotating rod, the bevel gear 1, the bevel gear 1, the round rod and the screw rod 1 are rotated, so that the screw tube, the rotating seat 2, the push rod and the rotating seat 1 are moved, and then the moving rod 1 and the moving rod 2 are moved, and the moving rod 1 and the moving rod 2 after the movement increase or decrease the overall length of the rocker mechanism, thereby controlling the contact time between the rocker mechanism and the valve, and then preliminarily controlling the size of the valve clearance, thereby improving the use effect of the valve tappet device.

Description

Technical Field

[0001] The invention relates to the technical field of automobile equipment, and in particular to a valve tappet device. Background Art

[0002] The function of the valve is to input air into the engine and discharge the exhaust gas after combustion, and the valve lifter is mainly used in the valve mechanism in the automobile engine, responsible for the intake and exhaust of the cylinder. When the whole mechanism is working, the crankshaft drives the camshaft, the camshaft drives the valve lifter, and the valve lifter drives the valve to open and close through the valve guide and corresponding parts. According to the needs of the working stroke of each cylinder of the engine, the intake and exhaust valves are opened and closed at a fixed time, and the movement of the piston is coordinated to accurately input the mixed gas into the cylinder and discharge the exhaust gas out of the cylinder. A certain gap is left in the valve and its transmission mechanism to compensate for the expansion of the valve after being heated. This gap is called valve clearance. When the valve clearance is too large, the valve will open later and the opening amplitude will also be reduced, resulting in insufficient intake and incomplete exhaust, which will reduce the engine power. At the same time, the noise and impact wear will also increase. When the valve clearance is too small, after the engine is running, the parts will expand due to heat, push the valve open, and make the valve not close tightly, causing air leakage, power reduction, and serious carbon deposition or burning on the sealing surface of the valve, and even the valve hits the piston, which increases the practicality of the valve lifter device. Therefore, it is necessary to check and adjust the valve clearance frequently. When adjusting the valve clearance, the existing valve lifter device generally adjusts the bolts thereon up and down to control the size of the valve clearance. However, this method has a single adjustment means and tools are required for adjustment. The adjustment process is relatively cumbersome and inconvenient. Summary of the invention

[0003] The purpose of the present invention is to provide a valve lifter device to solve the problem that the existing valve lifter device generally adjusts the bolts thereon up and down when adjusting the valve clearance, so as to control the size of the valve clearance, but this method has a single adjustment means, and tools are required for adjustment, and the adjustment process is relatively cumbersome and inconvenient.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A valve tappet device comprises a cam, a hydraulic tappet, a valve and a rocker arm mechanism, wherein the outer wall of the cam contacts one end of the hydraulic tappet, the other end of the hydraulic tappet is fixedly connected to a tappet, one end of the tappet is fixedly connected to a limiting ball, the rocker arm mechanism comprises an adjusting unit, both ends of the adjusting unit are respectively provided with a round block and a fixing rod, one end of the round block contacts one end of the valve, one end of the fixing rod is fixedly connected to a limiting shell, and the inner wall of the limiting shell is rotatably connected to the outer wall of the limiting ball.

[0006] Furthermore, the adjustment unit includes a connecting shell, a moving rod 1 and a moving rod 2, one end of the moving rod 1 and the moving rod 2 are both slidably connected to the inner wall of the connecting shell, and the other end of the fixed rod is fixedly connected to the bottom of the other end of the moving rod 1.

[0007] Furthermore, a rectangular groove is provided at the bottom of the other end of the second moving rod, a rectangular block is slidably connected inside the rectangular groove, a threaded hole is provided in the middle of the rectangular block, the middle of one end of the rectangular block is fixedly connected to one end of the round block, a screw rod 2 is slidably connected inside the threaded hole, a torsion rod is fixedly connected to one end of the screw rod 2, and one end of the torsion rod passes through the side wall of the rectangular groove and extends to the outside of the second moving rod.

[0008] The cam is provided with a toothed plate at one end of which the outer wall is fixed with a toothed plate, and a toothed plate is provided at two ends of the cam, and a toothed plate is provided at two ends of the cam, and a toothed plate is provided at two ends of the cam, and a toothed plate is provided at two ends of the cam.

[0009] Furthermore, a torsion shell is fixedly connected to the top of the rotating rod, and the outer wall of the torsion shell is rotatably connected to the inner wall of the circular hole, and a connecting plate is fixedly connected to the middle position inside the torsion shell.

[0010] Furthermore, baffles are provided on both sides of the connecting plate, and a compression spring is fixedly connected between the bottom of the baffle and the inner bottom surface of the torsion shell.

[0011] Furthermore, limiting grooves are provided at the middle positions of the two inner side walls of the connecting shell, limiting blocks are fixedly connected to both sides of one end of the moving rod 1 and the moving rod 2, and the limiting blocks are slidably connected to the limiting grooves at the corresponding positions.

[0012] Beneficial effects of the present invention:

[0013] 1. By respectively arranging a round block and a fixed rod at both ends of the adjustment unit, and rotating the connecting plate, the torsion shell, the rotating rod, the bevel gear 1, the bevel gear 1, the round rod and the screw rod 1 are rotated, so that the screw tube, the rotating seat 2, the push rod and the rotating seat 1 are moved, and then the moving rod 1 and the moving rod 2 are moved. After the movement, the moving rod 1 and the moving rod 2 increase or decrease the overall length of the rocker arm mechanism, thereby controlling the contact time between the rocker arm mechanism and the valve, and then preliminarily controlling the size of the valve clearance, thereby improving the use effect of the valve tappet device;

[0014] 2. A rectangular block is connected by sliding inside the rectangular groove, and the torsion rod is rotated to move the screw rod 2, thereby moving the rectangular block and the round block. The position of the round block is adjusted to control the gap between the bottom of the round block and the top of the valve, that is, the size of the valve clearance is further controlled, thereby avoiding excessive valve clearance, delaying the valve opening and reducing the opening amplitude, causing insufficient air intake and incomplete exhaust, and reducing engine power. At the same time, noise and impact wear will also increase. In addition, when the valve clearance is too small, after the engine is working, the parts will expand due to heat, push the valve open, and make the valve not tightly closed, causing air leakage and power reduction, and causing serious carbon deposition or burning on the sealing surface of the valve, and even the valve hitting the piston, thereby improving the practicality of the valve tappet device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the tappet and the limiting ball in the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the rocker arm mechanism in the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the regulating unit in the present invention;

[0020] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0021] Figure 6 It is a schematic diagram of the connecting shell structure in the present invention;

[0022] Figure 7 It is a schematic diagram of the positional relationship between the twisting shell and the baffle in the present invention;

[0023] Figure 8 It is a schematic diagram of the positional relationship between the moving rod and the rectangular block in the present invention.

[0024] In the figure: 100, cam; 200, hydraulic tappet; 210, tappet; 220, stop ball; 300, valve; 400, rocker mechanism; 410, round block; 420, adjustment unit; 421, connecting shell; 4211, stop groove; 4212, round hole; 422, moving rod 1; 423, moving rod 2; 4231, rectangular groove; 424, stop block; 425, rotating rod; 4251, twisting shell; 4252, conical gear Wheel one; 4253, compression spring; 4254, baffle; 4255, connecting plate; 426, rotating seat one; 4261, pushing rod; 4262, rotating seat two; 427, fixing plate; 4271, round rod; 4272, bevel gear two; 4273, screw one; 4274, screw tube; 428, torsion rod; 4281, screw two; 429, rectangular block; 4291, threaded hole; 430, fixing rod; 431, limit shell. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-8 As shown, a valve tappet device includes a cam 100, a hydraulic tappet 200, a valve 300 and a rocker arm mechanism 400, wherein the outer wall of the cam 100 contacts one end of the hydraulic tappet 200, the other end of the hydraulic tappet 200 is fixedly connected with a tappet 210, one end of the tappet 210 is fixedly connected with a limiting ball 220, and the rocker arm mechanism 400 includes an adjustment unit 420, and the two ends of the adjustment unit 420 are respectively provided with a round block 410 and a fixed rod 430, one end of the round block 410 contacts one end of the valve 300, one end of the fixed rod 430 is fixedly connected with a limiting shell 431, and the inner wall of the limiting shell 431 is fixedly connected with the limiting ball The outer wall of 220 is rotatably connected. When in use, the cam 100 is rotated to push the hydraulic tappet 200 and the tappet 210 to move, and the limiting ball 220 and the limiting shell 431 are used in conjunction with each other, so that the movement of the limiting ball 220 always drives the limiting shell 431 to move, and then the rocker arm mechanism 400 is rotated, and the rocker arm mechanism 400 rotates to push the valve 300 to move, thereby controlling the opening and closing of the valve 300, and then the adjustment unit 420 is used to facilitate the adjustment of the positions of the round block 410, the fixing rod 430 and the limiting shell 431, thereby preliminarily controlling the size of the valve clearance.

[0027] The adjusting unit 420 includes a connecting shell 421, a moving rod 1 422 and a moving rod 2 423. One end of the moving rod 1 422 and the moving rod 2 423 are both slidably connected to the inner wall of the connecting shell 421. A rectangular groove 4231 is provided at the bottom of the other end of the moving rod 2 423. A rectangular block 429 is slidably connected inside the rectangular groove 4231. A threaded hole 4291 is provided at the middle position of the rectangular block 429. The middle position of one end of the rectangular block 429 is fixedly connected to one end of the round block 410. A screw rod 2 4281 is slidably connected inside the threaded hole 4291. One end of the screw rod 2 4281 is fixedly connected to a torsion rod 428. One end of the torsion rod 428 passes through the side wall of the rectangular groove 4231 and extends to the outside of the moving rod 2 423. By rotating Twist rod 428 to move screw rod 4281, which is screwed into threaded hole 4291, and then rectangular groove 4231 is used to limit rectangular block 429, so that rectangular block 429 and round block 410 can be moved. By adjusting the position of round block 410, the gap between the bottom of round block 410 and the top of valve 300 is controlled, that is, the size of valve clearance is further controlled. The other end of fixed rod 430 is fixedly connected to the bottom of the other end of moving rod 1 422. By moving moving rod 1 422 and moving rod 2 423, the overall length of rocker arm mechanism 400 is increased or decreased, thereby controlling the contact time between rocker arm mechanism 400 and valve 300, and further controlling the size of valve clearance.

[0028] A circular hole 4212 is provided at the middle position of the top surface of the connecting shell 421, and limiting grooves 4211 are provided at the middle positions of the two inner side walls of the connecting shell 421. Both sides of one end of the moving rod 1 422 and the moving rod 2 423 are fixedly connected with limiting blocks 424, and the limiting blocks 424 are slidably connected with the limiting grooves 4211 at the corresponding positions. The limiting blocks 424 and the limiting grooves 4211 are used to limit the moving rod 1 422 and the moving rod 2 423 to prevent the moving rod 1 422 and the moving rod 2 423 from falling off from the connecting shell 421. A rotating rod 425 is rotatably connected at the middle position of the inner bottom surface of the connecting shell 421, and the top of the rotating rod 425 A twisting shell 4251 is fixedly connected, and the outer wall of the twisting shell 4251 is rotatably connected to the inner wall of the circular hole 4212. A connecting plate 4255 is fixedly connected to the middle position inside the twisting shell 4251. The connecting plate 4255 is used to facilitate the rotation of the twisting shell 4251 and the rotating rod 425. Baffles 4254 are arranged on both sides of the connecting plate 4255. A compression spring 4253 is fixedly connected between the bottom of the baffle 4254 and the inner bottom surface of the twisting shell 4251. The compression spring 4253 and the connecting plate 4255 are used in combination to facilitate the shielding of the gap between the twisting shell 4251 and the connecting plate 4255. The outer wall sleeve at one end of the rotating rod 425 A bevel gear 4252 is fixed to the rod 425, and a fixing plate 427 is provided on both sides of the rotating rod 425, and the outer wall of the fixing plate 427 is fixedly connected to the inner wall of the connecting shell 421, and a round rod 4271 is rotatably connected to the fixing plate 427, and one end of the round rod 4271 is fixedly connected to a bevel gear 4272, and the bevel gear 4272 is meshed with the bevel gear 4252, and the other end of the round rod 4271 is fixedly connected to a screw rod 4273, and the outer wall of one end of the screw rod 4273 is screwed and connected with a screw tube 4274, and one end of the screw tube 4274 is fixedly connected to a rotating seat 4262, and the interior of the rotating seat 4262 is rotatably connected to the push rod 4 261, the outer side of one end of the push rod 4261 is rotatably connected with the rotating seat 1 426 through the shaft rod, and one end of the moving rod 1 422 and the moving rod 2 423 are respectively fixedly connected with the rotating seat 1 426 at the corresponding position, and the rotating rod 425 is rotated, so that the bevel gear 1 4252 and the two bevel gears 1 4252 are rotated, thereby making the round rod 4271 and the screw 1 4273 rotate, and the screw 1 4273 is screwed and connected with the screw tube 4274, so that the screw tube 4274, the rotating seat 2 4262, the push rod 4261 and the rotating seat 1 426 are moved, and then the moving rod 1 422 and the moving rod 2 423 are moved.

[0029] Working principle: The working steps of the valve lifter device are:

[0030] Step 1: The cam 100 is driven to rotate by the automobile driving mechanism, and the rotation of the cam 100 pushes the hydraulic tappet 200 and the tappet 210 to move, and the limiting ball 220 and the limiting shell 431 are used in conjunction, so that the movement of the limiting ball 220 always drives the limiting shell 431 to move, and then the rocker arm mechanism 400 is rotated, and the rotation of the rocker arm mechanism 400 pushes the valve 300 to move, thereby controlling the opening and closing of the valve 300;

[0031] Step 2: When the valve clearance of the automobile generator is too large or too small, the two baffles 4254 are pressed to move the baffles 4254 to the inside of the twisting shell 4251, and the connecting plate 4255 is pinched and rotated to rotate the twisting shell 4251. The rotation of the twisting shell 4251 causes the bevel gear 1 4252 to rotate, and the bevel gear 1 4252 is meshed with the two bevel gears 1 4252, so that the round rod 4271 and the screw 1 4273 are rotated, and the screw 1 4273 The screw tube 4274 is screwed together to move the screw tube 4274, thereby moving the rotating seat 4262, and the moving rotating seat 4262 moves the push rod 4261 and the rotating seat 1 426 to move, thereby moving the moving rod 1 422 and the moving rod 2 423 to move. The moving moving rod 1 422 and the moving rod 2 423 increase or decrease the overall length of the rocker arm mechanism 400, thereby controlling the contact time between the rocker arm mechanism 400 and the valve 300, and thereby preliminarily controlling the size of the valve clearance.

[0032] Step three: by rotating the torsion rod 428, the screw rod 4281 is moved, and the screw rod 4281 is screwed and connected with the threaded hole 4291, and then the rectangular groove 4231 is used to limit the rectangular block 429, so that the rectangular block 429 and the round block 410 are moved, and the position of the round block 410 is adjusted to control the size of the gap between the bottom of the round block 410 and the top of the valve 300, that is, the size of the valve clearance is further controlled, and the valve clearance is avoided to be too large, the valve 300 will open late and the opening amplitude will also be reduced, resulting in insufficient intake and incomplete exhaust, and the engine power will be reduced. At the same time, the noise and impact wear will also increase, and the valve clearance is avoided to be too small. After the engine is working, the parts expand due to heat, and the valve 300 is pushed open, so that the valve 300 is not closed tightly, causing leakage, power reduction, and serious carbon deposition or burning of the sealing surface of the valve 300, and even the valve 300 hits the piston, thereby improving the practicality of the valve tappet device.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A valve lifter device, comprising a cam (100), a hydraulic lifter (200), a valve (300) and a rocker arm mechanism (400), characterized in that: The outer wall of the cam (100) contacts one end of the hydraulic tappet (200); the other end of the hydraulic tappet (200) is fixedly connected to a tappet (210); one end of the tappet (210) is fixedly connected to a limiting ball (220); the rocker arm mechanism (400) comprises an adjustment unit (420); two ends of the adjustment unit (420) are respectively provided with a round block (410) and a fixing rod (430); one end of the round block (410) contacts one end of the valve (300); one end of the fixing rod (430) is fixedly connected to a limiting shell (431); and the inner wall of the limiting shell (431) is rotatably connected to the outer wall of the limiting ball (220); The adjustment unit (420) comprises a connecting shell (421), a moving rod 1 (422) and a moving rod 2 (423); one end of the moving rod 1 (422) and the moving rod 2 (423) are both slidably connected to the inner wall of the connecting shell (421); the other end of the fixing rod (430) is fixedly connected to the bottom of the other end of the moving rod 1 (422); a circular hole (4212) is provided at the middle position of the inner top surface of the connecting shell (421); a rotating rod (425) is rotatably connected to the middle position of the inner bottom surface of the connecting shell (421); a bevel gear 1 (4252) is sleeved and fixedly connected to the outer side wall of one end of the rotating rod (425); fixing plates (427) are provided on both sides of the rotating rod (425); the outer side wall of the fixing plate (427) is fixedly connected to the inner side wall of the connecting shell (421); the fixing plate A round rod (4271) is rotatably connected to (427), one end of the round rod (4271) is fixedly connected to a bevel gear 2 (4272), and the bevel gear 2 (4272) is meshed with a bevel gear 1 (4252), the other end of the round rod (4271) is fixedly connected to a screw rod 1 (4273), the outer wall of one end of the screw rod 1 (4273) is screwed and connected to a screw tube (4274), one end of the screw tube (4274) is fixedly connected to a rotating seat 2 (4262), the interior of the rotating seat 2 (4262) is rotatably connected to a push rod (4261) via an axle, the outer side of one end of the push rod (4261) is rotatably connected to a rotating seat 1 (426) via an axle, and one end of the moving rod 1 (422) and the moving rod 2 (423) are respectively fixedly connected to the rotating seat 1 (426) at corresponding positions.

2. A valve lifter device according to claim 1, characterized in that: A rectangular groove (4231) is provided at the bottom of the other end of the second moving rod (423), a rectangular block (429) is slidably connected inside the rectangular groove (4231), a threaded hole (4291) is provided at the middle position of the rectangular block (429), a middle position of one end of the rectangular block (429) is fixedly connected to one end of the round block (410), a second screw rod (4281) is slidably connected inside the threaded hole (4291), one end of the second screw rod (4281) is fixedly connected to a torsion rod (428), and one end of the torsion rod (428) passes through the side wall of the rectangular groove (4231) and extends to the outside of the second moving rod (423).

3. A valve lifter device according to claim 1, characterized in that: A twisting shell (4251) is fixedly connected to the top of the rotating rod (425), and the outer wall of the twisting shell (4251) is rotatably connected to the inner wall of the circular hole (4212), and a connecting plate (4255) is fixedly connected to the middle position inside the twisting shell (4251).

4. A valve lifter device according to claim 3, characterized in that: Baffles (4254) are provided on both sides of the connecting plate (4255), and a compression spring (4253) is fixedly connected between the bottom of the baffle (4254) and the inner bottom surface of the torsion shell (4251).

5. A valve lifter device according to claim 1, characterized in that: Limiting grooves (4211) are provided at the middle positions of the two inner side walls of the connecting shell (421), and limiting blocks (424) are fixedly connected to both sides of one end of the moving rod 1 (422) and the moving rod 2 (423), and the limiting blocks (424) are slidably connected to the limiting grooves (4211) at corresponding positions.

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