Novel engine rocker arm structure
By optimizing the valve pushrod flare design and setting up oil passage connections, the problems of wear and poor heat dissipation caused by iron filings were solved, achieving uniform lubrication and efficient heat dissipation, thus improving engine performance and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2026-03-20
AI Technical Summary
In the existing engine valve rocker arm structure, the deposition of iron filings leads to increased wear, larger valve clearance, deteriorated performance, uneven oil film and poor heat dissipation, and large oil consumption.
The valve pushrod's flared end is optimized and placed on the valve clearance adjusting screw. It is designed to be spherical with the flared end facing downwards to facilitate the removal of metal filings and heat. An oil passage is set to connect with the inner cavity of the flared end to achieve rapid removal of metal filings and heat.
It achieves rapid removal of iron filings and heat, uniform lubricating oil film, uniform wear, low energy loss, good heat dissipation, and simple and reliable structure.
Smart Images
Figure CN224017289U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an engine technical field, concretely relates to a novel engine rocker arm structure. BACKGROUND
[0002] The prior art engine valve rocker arm structure, reference Figure 1 , mainly has the following several shortcomings.
[0003] I. The iron filings generated in the movement process cannot be removed and are prone to wear: since the valve push rod of the traditional rocker arm structure is an upper horn mouth, the iron filings generated in the wear process are all deposited in the horn mouth and cannot be removed, and the iron filings can cause the wear to intensify.
[0004] II. The valve clearance becomes large after long-time operation, the performance deteriorates, and the energy consumption is poor: since the iron filings cannot be quickly removed during the wear process, the rocker arm wear will inevitably intensify. After long-time operation, the valve clearance will become large, the valve opening and closing cannot meet the design requirements, the performance emission deteriorates, and the fuel energy consumption is high.
[0005] III. The oil film is uneven, the heat dissipation capacity is poor, and the oil consumption is large: since the oil is all deposited in the upper horn mouth of the push rod, the valve adjusting screw is also all soaked in the oil, and during the operation process, the oil will inevitably splash everywhere, the oil consumption is large, the oil film thickness is thick, the oil circulation capacity is poor, and the heat dissipation effect is poor.
[0006] In summary, in the prior art, the valve push rod of the engine valve rocker arm structure is an upper horn mouth, the iron filings generated in the wear process are deposited in the horn mouth, and then the wear intensifies, the valve clearance becomes large, and problems such as performance emission deterioration, high oil consumption, and poor heat dissipation effect are caused. CONTENT OF THE UTILITY MODEL
[0007] The utility model aims at providing a novel engine rocker arm structure to solve the above-mentioned deficiencies in the prior art.
[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a novel engine rocker arm structure, comprising: a rocker arm, a rocker arm shaft, and a rocker arm fixing bolt, the rocker arm shaft is inserted in the rocker arm from the side surface of the rocker arm, the rocker arm fixing bolt passes through the rocker arm shaft downward from the top of the rocker arm, the rocker arm is provided with a mounting ring, a valve clearance adjusting screw is inserted in the mounting ring, a clearance adjusting nut is threadedly connected to the top outer side of the valve clearance adjusting screw, the lower end of the valve clearance adjusting screw is horn-shaped, and the lower end of the valve clearance adjusting screw is provided with a valve push rod.
[0009] Further, the top of the valve push rod is a spherical ball shape that matches the horn mouth of the lower end of the valve clearance adjusting screw.
[0010] In the above technical solution, the novel engine rocker arm structure has the beneficial effects that:
[0011] The valve push rod's trumpet mouth is optimized to the valve clearance adjusting screw, the structure can quickly flush away the iron filings generated in the movement process of the valve clearance adjusting screw and the valve push rod, can quickly take away the heat generated in the movement process, makes the lubricating oil film uniform, the wear uniform, the energy loss small, the heat dissipation effect good, the structure simple, the reliability good and the like.
[0012] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the disclosure.
[0013] The present application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0015] Figure 1 The prior rocker arm structure schematic diagram provided for the embodiments of the present application;
[0016] Figure 2 The first perspective structure schematic diagram provided for the embodiments of the present application;
[0017] Figure 3 The second perspective structure schematic diagram provided for the embodiments of the present application;
[0018] Figure 4 The third perspective structure schematic diagram provided for the embodiments of the present application;
[0019] Figure 5 The gap adjusting screw sectional view provided for the embodiments of the present application.
[0020] Explanation of reference signs:
[0021] 1, rocker arm; 2, mounting ring; 3, rocker arm shaft; 4, rocker arm fixing bolt; 5, valve push rod; 6, valve clearance adjusting screw; 61, oil channel; 7, gap adjusting nut. DETAILED DESCRIPTION
[0022] To make the purposes, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present disclosure.
[0023] Please refer to Figures 2-5 A novel engine rocker arm structure, comprising: a rocker arm 1, a rocker arm shaft 3 and a rocker arm fixing bolt 4, the rocker arm shaft 3 is inserted in the rocker arm 1 from the side of the rocker arm 1, the rocker arm fixing bolt 4 passes through the rocker arm shaft 3 from the top of the rocker arm 1, a mounting ring 2 is arranged on the rocker arm 1, a valve clearance adjusting screw 6 is inserted in the mounting ring 2, a clearance adjusting nut 7 is threadedly connected to the top outside of the valve clearance adjusting screw 6, the lower end of the valve clearance adjusting screw 6 is trumpet-shaped, and the lower end of the valve clearance adjusting screw 6 is provided with a valve push rod 5.
[0024] Specifically, the rocker arm fixing bolt 4 is threadedly connected to the cylinder head after passing through the rocker arm shaft 3, the mounting ring 2 is fixedly connected to the rocker arm 1, the clearance adjusting nut 7 is screwed off the valve clearance adjusting screw 6, then the gap between the trumpet-shaped lower end of the valve clearance adjusting screw 6 and the top of the valve push rod 5 is changed, and after the adjustment is completed, the clearance adjusting nut 7 is screwed on the valve clearance adjusting screw 6.
[0025] The trumpet-shaped lower end of the valve push rod 5 is optimized on the valve clearance adjusting screw 6, this structure can quickly flush away the iron filings generated in the movement process of the valve clearance adjusting screw 6 and the valve push rod 5, can quickly take away the heat generated in the movement process, makes the lubricating oil film uniform, the wear uniform, the energy loss small, the heat dissipation effect good, the structure simple, the reliability good and the like.
[0026] Further, the top of the valve push rod 5 is a spherical shape which is in contact with the trumpet-shaped lower end of the valve clearance adjusting screw 6.
[0027] Specifically, referring to Figure 5 An oil channel 61 is formed in the valve clearance adjusting screw 6, the oil channel 61 is in communication with the inner cavity of the trumpet-shaped lower end of the valve clearance adjusting screw 6, the upper end of the valve push rod 5 is located in the trumpet-shaped lower end of the valve clearance adjusting screw 6, and the lower end of the valve push rod 5 is fixedly connected to a tappet in the engine, the tappet is in contact with a camshaft in the cylinder body, and the valve push rod 5 is driven to move up and down with the rotation of the camshaft.
[0028] In the utility model, referring to Figures 2 to 5Since the trumpet mouth provided on the valve clearance adjusting screw 6 faces downward, the debris generated by the friction of the rocker arm 1 movement can be taken away under the gravity and the scouring of the oil, and the heat generated by the movement between the valve push rod 5 and the valve clearance adjusting screw 6 is also taken away, thereby lubricating the trumpet mouth between the valve push rod 5 and the valve clearance adjusting screw 6, greatly reducing the wear between the valve push rod 5 and the valve clearance adjusting screw 6, improving the performance of the engine, and prolonging the service life of the rocker arm 1.
[0029] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. A novel engine rocker arm structure, comprising: The rocker arm (1), rocker arm shaft (3), and rocker arm fixing bolt (4) are characterized in that: the rocker arm shaft (3) is inserted into the rocker arm (1) from the side of the rocker arm (1), the rocker arm fixing bolt (4) passes through the rocker arm shaft (3) from the top of the rocker arm (1) downwards, the rocker arm (1) is provided with a mounting ring (2), a valve clearance adjusting screw (6) is inserted in the mounting ring (2), a clearance adjusting nut (7) is threaded on the outer side of the top of the valve clearance adjusting screw (6), the lower end of the valve clearance adjusting screw (6) is flared, and a valve push rod (5) is provided at the lower end of the valve clearance adjusting screw (6).
2. The novel engine rocker arm structure according to claim 1, characterized in that, The top of the valve push rod (5) is a spherical shape that fits into the lower flared end of the valve clearance adjusting screw (6).