Shock-resistant hydraulic tappet

Abstract

The utility model provides an anti-impact hydraulic tappet, and belongs to the technical field of automobile parts. The hydraulic tappet solves the problem that an existing hydraulic tappet is prone to generating noise when being impacted. The impact-resistant hydraulic tappet comprises a tappet shell, a mounting cavity is formed in the tappet shell, a plunger is arranged in the mounting cavity, guide grooves are symmetrically formed in the bottom of the mounting cavity, a supporting plate spring is clamped between the guide grooves, a sealing ball is arranged on the supporting plate spring, the top of the sealing ball abuts against the plunger, and an abutting arc embedded with the sealing ball is arranged at the bottom of the plunger. The shock-resistant and low-noise shock absorber has the advantages of being resistant to shock, low in noise and rapid in response.

Description

Technical Field

[0001] This utility model belongs to the field of automotive component technology, and relates to a hydraulic tappet, particularly an impact-resistant hydraulic tappet. Background Technology

[0002] Hydraulic tappets, also known as hydraulic pushrods, are a key component in automobile engines. Their working environment is full of dynamic changes and impact loads. During engine operation, the valves need to open and close frequently, which generates significant mechanical shocks and vibrations. In addition, pressure fluctuations caused by fuel combustion also indirectly affect the hydraulic tappets, increasing the impact loads they bear.

[0003] As people's demands for vehicle comfort increase, there is a need to research and design vehicles to improve their shock and impact resistance in order to enhance comfort. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a fast-response, impact-resistant hydraulic tappet.

[0005] The objective of this utility model can be achieved through the following technical solution: an impact-resistant hydraulic tappet, characterized in that it includes a tappet housing, an installation cavity is provided inside the tappet housing, and a plunger is provided inside the installation cavity. Guide grooves are symmetrically provided at the bottom of the installation cavity, and a support leaf spring is engaged between the guide grooves. A sealing ball is provided on the support leaf spring, and the top of the sealing ball abuts against the plunger. The bottom of the plunger is provided with an abutting arc that fits the sealing ball. A support spring is provided inside the installation cavity.

[0006] In the aforementioned impact-resistant hydraulic tappet, a limiting snap ring with a limiting plunger is provided in the mounting cavity.

[0007] In the aforementioned impact-resistant hydraulic tappet, a spherical support plate is provided on the supporting leaf spring.

[0008] In the aforementioned impact-resistant hydraulic tappet, the sealing sphere is provided with a silicone layer.

[0009] Compared with existing technologies, this impact-resistant hydraulic tappet uses a support leaf spring to support the plunger in the mounting cavity. The deformation and reset of the support leaf spring control the plunger. The sealing ball on the top of the support leaf spring prevents oil from flowing back into the plunger. The sealing ball limited by the support plate has better stability. The support springs on both sides of the support leaf spring prevent the leaf spring from colliding with the tappet housing due to instantaneous impact, thus reducing vibration and noise. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a half-section of the impact-resistant hydraulic tappet.

[0011] In the diagram, 1. Piston; 2. Contact arc; 3. Mounting cavity; 4. Spherical support plate; 5. Support spring; 6. Guide groove; 7. Support leaf spring; 8. Silicone layer; 9. Sealing sphere; 10. Tappet housing; 11. Limiting snap ring. Detailed Implementation

[0012] 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.

[0013] like Figure 1 As shown, this impact-resistant hydraulic tappet includes a tappet housing 10, an installation cavity 3 inside the tappet housing 10, and a plunger 1 inside the installation cavity 3. Guide grooves 6 are symmetrically arranged at the bottom of the installation cavity 3, and a support leaf spring 7 is engaged between the guide grooves 6. A sealing ball 9 is provided on the support leaf spring 7, and the top of the sealing ball 9 abuts against the plunger 1. The bottom of the plunger 1 has an abutting arc 2 that fits the sealing ball 9. A support spring 5 is located inside the installation cavity 3. When the plunger 1 is compressed or impacted, it presses down on the sealing ball 9, which in turn compresses the support leaf spring 7. The support leaf spring 7 is embedded in the guide grooves 6 on both sides. After the compression ends, the support leaf spring 7 resets the plunger 1. The support spring 5 reduces vibration and noise caused by direct impact of components.

[0014] Preferably, the mounting cavity 3 is provided with a limiting spring 11 for the limiting plunger 1.

[0015] Preferably, the supporting leaf spring 7 is provided with a spherical support plate 4, which wraps around the bottom of the sealing sphere 9 to prevent the sealing sphere 9 from falling off.

[0016] Preferably, the sealing sphere 9 is provided with a silicone layer 8.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model 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 this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document frequently uses terms such as plunger 1, contact arc 2, mounting cavity 3, spherical support plate 4, support spring 5, guide groove 6, support leaf spring 7, silicone layer 8, sealing sphere 9, push rod housing 10, and limiting snap ring 11, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A shock resistant hydraulic rod, characterized in that, The application relates to a tappet housing (10) which is provided with a mounting cavity (3) and a plunger (1) in the mounting cavity (3), the bottom of the mounting cavity (3) is symmetrically provided with guide grooves (6), supporting plate springs (7) are clamped between the guide grooves (6), the supporting plate springs (7) are provided with sealing spherical balls (9), the top of the sealing spherical balls (9) abuts against the plunger (1), the bottom of the plunger (1) is provided with abutting arcs (2) which are embedded with the sealing spherical balls (9), and supporting springs (5) are arranged in the mounting cavity (3).

2. A hydraulic impact rod according to claim 1, characterized in that The mounting cavity (3) is provided with a limiting snap spring (11) for limiting the plunger (1).

3. A hydraulic impact rod according to claim 1, wherein The supporting plate spring (7) is provided with a spherical ball supporting plate (4).

4. A hydraulic impact rod according to claim 1, wherein The sealing spherical ball (9) is provided with a silica gel layer (8).

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