Wear-resistant hydraulic valve tappet

Abstract

The application provides a wear-resistant valve hydraulic tappet and belongs to the technical field of automobile accessories. The valve hydraulic tappet solves the problem that the upper and lower movement of the hydraulic tappet will move on the outer surface of the cylinder body and cause damage to the cylinder body during use. The wear-resistant valve hydraulic tappet comprises a hydraulic tappet shell, a valve arranged at the lower end of the hydraulic tappet shell, a cam arranged at the upper end of the hydraulic tappet shell, a cylinder body arranged in the hydraulic tappet shell, a piston arranged in the cylinder body, a one-way valve fixedly arranged in the cylinder body, a return spring arranged between the piston and the cylinder body, an oil injection hole arranged on the hydraulic tappet shell, a mounting portion arranged between the hydraulic tappet shell and the cylinder body, a connecting portion arranged outside the cylinder body, a filter screen fixedly arranged on the mounting portion, a fixing portion arranged on the inner wall of the hydraulic tappet shell, and a plurality of connecting rods arranged on the connecting portion. The application has the advantage of filtering effect.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology, and relates to a hydraulic tappet, particularly a wear-resistant valve hydraulic tappet. Background Technology

[0002] The tappet is a major component of the valve train, a mechanism that uses oil pressure to transmit force from the eccentric wheel on the camshaft to the valves. Hydraulic tappets mainly consist of a piston, a one-way valve, and a return spring. As a crucial component for adjusting the clearance of the engine's valve train, the tappet's performance directly affects the overall engine performance. During actual use, the piston and tappet will experience wear. Excessive wear can easily lead to problems with clearance adjustment, causing unstable operation. Furthermore, impurities in the engine oil can cause increased wear or damage to internal components, thus affecting operating efficiency.

[0003] In existing hydraulic tappets, the up-and-down movement of the tappet moves on the outer surface of the cylinder body during use, which can cause some damage to the cylinder body, thereby affecting its service life and increasing the cost of use. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a wear-resistant hydraulic valve tappet with filtering effect.

[0005] The objective of this invention can be achieved through the following technical solution: a wear-resistant hydraulic valve tappet, comprising a hydraulic tappet housing, a valve at the lower end of the hydraulic tappet housing, and a cam at the upper end of the hydraulic tappet housing. The hydraulic tappet housing contains a cylinder body, a piston that can move up and down within the cylinder body, a one-way valve fixedly mounted within the cylinder body, a return spring between the piston and the cylinder body, an oil injection hole on the hydraulic tappet housing, a mounting portion between the hydraulic tappet housing and the cylinder body, and an oil chamber formed inside the hydraulic tappet housing, a connecting portion outside the cylinder body, and the hydraulic tappet housing sliding on the mounting portion thereon, a filter screen for filtering impurities in the hydraulic oil fixedly mounted on the mounting portion relative to the oil injection hole, a fixing portion for fixing the mounting portion on the inner wall of the hydraulic tappet housing, the fixing portion and the hydraulic tappet housing being integrally formed, and a plurality of connecting rods for the mounting portion to move on the connecting portion.

[0006] In the aforementioned wear-resistant hydraulic valve tappet, the mounting portion is an annular structure, and there is a gap between the piston and the cylinder body.

[0007] In the aforementioned wear-resistant valve hydraulic tappet, the mounting part has several positioning rods protruding downwards, the fixing part has several openings for each positioning rod to pass through, and the lower end of the mounting part has an abutment part that abuts against the fixing part. The piston moves the hydraulic tappet housing upwards, so that the mounting part and the hydraulic tappet housing move upwards synchronously.

[0008] In the aforementioned wear-resistant valve hydraulic tappet, the connecting part is fixedly installed on the cylinder block by fixing bolts.

[0009] Compared with existing technologies, this wear-resistant valve hydraulic tappet avoids wear between the cylinder body and the hydraulic tappet housing by providing an mounting part between the cylinder body and the hydraulic tappet housing and a detachable connecting part outside the cylinder body, thereby improving the service life of the cylinder body and the hydraulic tappet housing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention (with valve clearance).

[0011] Figure 2 This is a schematic diagram of the structure of the present invention (without valve clearance).

[0012] In the diagram, 1. Hydraulic tappet housing; 2. Valve; 3. Cam; 4. Cylinder body; 5. Piston; 6. Check valve; 7. Return spring; 8. Oil injection hole; 9. Mounting part; 10. Oil chamber; 11. Connecting part; 12. Filter screen; 13. Fixing part; 14. Connecting rod; 15. Positioning rod; 16. Abutment part. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1 , Figure 2As shown, this wear-resistant hydraulic tappet for valve 2 includes a hydraulic tappet housing 1. A valve 2 is located at the lower end of the hydraulic tappet housing 1, and a cam 3 is located at the upper end of the hydraulic tappet housing 1. When not in operation, the cam 3 and the hydraulic tappet housing 1 have a clearance relative to the valve 2. A cylinder body 4 is housed within the hydraulic tappet housing 1, and a piston 5 that can move up and down within the cylinder body 4 is housed within the cylinder body 4. A one-way valve 6 is fixedly installed within the cylinder body 4, and a return spring 7 is installed between the piston 5 and the cylinder body 4. An oil injection hole 8 is provided on the hydraulic tappet housing 1. An installation part 9 is provided between the body 1 and the cylinder body 4, and an oil chamber 10 is formed inside the hydraulic tappet housing 1. A connecting part 11 is provided outside the cylinder body 4, and the hydraulic tappet housing 1 slides on it through the installation part 9. A filter screen 12 for filtering impurities in hydraulic oil is fixedly provided on the installation part 9 at a position relative to the oil injection hole 8. A fixing part 13 for fixing the installation part 9 is provided on the inner wall of the hydraulic tappet housing 1. The fixing part 13 and the hydraulic tappet housing 1 are integrally formed. A plurality of connecting rods 14 for the installation part 9 to move are provided on the connecting part 11.

[0015] To elaborate further, when this invention is in operation, hydraulic oil is first injected. The hydraulic oil passes through the filter screen 12 into the oil chamber 10. As the hydraulic oil is injected, it enters the one-way valve 6, controlling the piston 5 to move upward, which in turn drives the hydraulic tappet housing 1 to move upward. The fixing part 13 drives the mounting part 9 to move upward in a directional manner on the connecting part 11. At this time, as... Figure 2 As shown, the valve clearance between valve 2 and cam 3 decreases, and then cam 3 is controlled to work, thereby controlling the hydraulic tappet housing 1 to work on valve 2.

[0016] To elaborate further, the mounting part 9 is a ring structure, and there is a gap between the piston 5 and the cylinder body 4.

[0017] To elaborate further, the mounting part 9 has several downward-protruding positioning rods 15, and the fixing part 13 has several openings for each positioning rod 15 to pass through. The lower end of the mounting part 9 has a stop part 16 that abuts against the fixing part 13. The piston 5 moves the hydraulic tappet housing 1 upward, causing the mounting part 9 and the hydraulic tappet housing 1 to move upward synchronously. The synchronous operation of the mounting part 9 and the hydraulic tappet housing 1 ensures that the filter screen 12 filters the hydraulic oil during operation, reducing the impact of impurities in the hydraulic oil on its internal structure.

[0018] To elaborate further, the connecting part 11 is fixedly installed on the cylinder body 4 by fixing bolts. The connecting part 11 is detachably fixed on the cylinder body 4, so when it and the mounting part 9 are damaged, only the connecting part 11 can be replaced, reducing the company's operating costs.

[0019] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0020] Although this document frequently uses terms such as hydraulic tappet housing 1, valve 2, cam 3, cylinder body 4, piston 5, check valve 6, return spring 7, oil injection hole 8, mounting part 9, oil chamber 10, connecting part 11, filter screen 12, fixing part 13, connecting rod 14, positioning rod 15, and abutment part 16, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A wear-resistant hydraulic valve lifter, comprising a hydraulic lifter housing (1), the lower end of the hydraulic lifter housing (1) is provided with a valve (2), the upper end of the hydraulic lifter housing (1) is provided with a cam (3), characterized in that, The hydraulic tappet housing (1) contains a cylinder body (4), and the cylinder body (4) contains a piston (5) that can move up and down within the cylinder. A one-way valve (6) is fixedly installed inside the cylinder body (4). A return spring (7) is installed between the piston (5) and the cylinder body (4). An oil injection hole (8) is provided on the hydraulic tappet housing (1). A mounting part (9) is provided between the hydraulic tappet housing (1) and the cylinder body (4), and an oil chamber (10) is formed inside the hydraulic tappet housing (1). The cylinder body (4) has an external... The hydraulic tappet housing (1) is provided with a connecting part (11) and slides on it via a mounting part (9). A filter screen (12) for filtering impurities in hydraulic oil is fixedly provided on the mounting part (9) at a position relative to the oil injection hole (8). A fixing part (13) for fixing the mounting part (9) is provided on the inner wall of the hydraulic tappet housing (1). The fixing part (13) and the hydraulic tappet housing (1) are integrally formed. A plurality of connecting rods (14) for the mounting part (9) to move are provided on the connecting part (11).

2. The wear-resistant valve hydraulic tappet according to claim 1, characterized in that, The mounting part (9) is an annular structure, and there is a gap between the piston (5) and the cylinder body (4).

3. The wear-resistant valve hydraulic tappet according to claim 1, characterized in that, The mounting part (9) has several positioning rods (15) protruding downwards. The fixing part (13) has several openings for each positioning rod (15) to pass through. The mounting part (9) has a stop part (16) at its lower end. The stop part (16) abuts against the fixing part (13). The piston (5) moves the hydraulic tappet housing (1) upwards, so that the mounting part (9) and the hydraulic tappet housing (1) move upwards synchronously.

4. The wear-resistant valve hydraulic tappet according to claim 1, characterized in that, The connecting part (11) is fixedly installed on the cylinder body (4) by fixing bolts.

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