A convenient engine rocker arm that is easy to install and remove
By designing a limiting disassembly mechanism and a guide component on the engine rocker arm, the problem of the rocker arm slipping during assembly was solved, achieving stable support and precise guidance, improving assembly efficiency and reliability, and ensuring the safety and reliable operation of the engine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUAN JUYU MACHINERY CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-30
AI Technical Summary
During maintenance, assembly, or repair, existing engine rocker arms are prone to slipping into the engine cylinder head due to gravity, shaking, or misoperation, caused by their compact structure and limited space. This leads to inconvenience in assembly and safety hazards.
An easy-to-install and easy-to-disassemble engine rocker arm was designed, which adopts a limiting disassembly mechanism and a guide assembly. The limiting assembly provides stable support through a limiting ring and a friction block, while the guide assembly provides precise guidance through a contact tube and a guide ring, preventing shaking and slippage, and improving assembly efficiency and reliability.
It effectively prevents the rocker arm from shaking or slipping during installation or disassembly, improves maintenance safety and assembly accuracy, simplifies the operation process, and enhances the operational reliability of the engine valve mechanism.
Smart Images
Figure CN224432631U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine rocker arm technology, and in particular to a convenient engine rocker arm that is easy to install and disassemble. Background Technology
[0002] As an important component of the valve mechanism, the engine rocker arm mainly transmits the movement of the tappet or cam to the valve through rotation, thereby controlling intake and exhaust. The rocker arm is generally mounted on the rocker arm shaft or support shaft inside the engine cylinder head and operates under high-frequency reciprocating motion and prolonged high-temperature and vibration conditions.
[0003] As shown in the reference case "A Rocker Arm for a Large Displacement Engine" (Announcement No. CN214533103U), the operation is simple and highly practical. The main structure of the device consists of a cylinder, a circular slot, a bottom block, a left arm, a left connecting block, a left circular slot, a left slot, a right arm, a right connecting block, a right circular slot, and a right slot. The use of the circular slot, the left circular slot, and the right circular slot facilitates the installation and connection of the large displacement engine rocker arm with the automobile.
[0004] Most existing engine rocker arms are installed by using a shaft hole and a support shaft or guide rail. During maintenance, assembly or repair, the rocker arm needs to be slid in or out along the guide rail. Due to the compact structure and limited space of the rocker arm body, if it is not fully locked in place or is not properly assembled, the rocker arm is very likely to slip off due to gravity, shaking or misoperation and fall into the engine cylinder head. Utility Model Content
[0005] Therefore, it is necessary to address the problem that existing engine rocker arms, which mostly use a shaft hole and support shaft or guide rail for installation, require sliding the rocker arm in or out along the guide rail during maintenance, assembly, or repair. Due to the compact structure and limited space of the rocker arm body, if it is not fully engaged or improperly assembled, the rocker arm is prone to slipping off due to gravity, shaking, or misoperation and falling into the engine cylinder head. This necessitates providing a convenient engine rocker arm that is easy to install and disassemble, comprising: a rocker arm body, with a locking screw fixedly installed on one side of the rocker arm body; and a limiting disassembly mechanism, a telescopic limiting disassembly mechanism for preventing the rocker arm from falling into the engine cylinder head during disassembly, located on one side of the rocker arm body; wherein the limiting disassembly mechanism includes a rocker arm shaft fixedly installed on the surface of the rocker arm body, a limiting component on one side of the rocker arm shaft, and a guide component inside the rocker arm shaft.
[0006] The limiting assembly includes limiting rings slidably mounted on both sides of the rocker arm shaft. One end of each limiting ring located inside the rocker arm shaft is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the rocker arm shaft.
[0007] Multiple friction blocks are fixedly installed on the other end surface of the limiting ring, and the multiple friction blocks are arranged in a ring shape.
[0008] The friction block extends from one side of the limiting ring surface and is set in an arc shape, and the friction block is set in a strip shape.
[0009] The surface of the friction block has multiple grooves, all of which are configured as strip grooves.
[0010] A drive plate is fixedly mounted on the surface of the limiting ring, and a rubber strip is fixedly mounted on one side of the drive plate.
[0011] The guide assembly includes a shaft hole formed inside the rocker arm shaft, a contact tube fixedly installed inside the shaft hole, and guide rings fixedly installed on both sides of the contact tube.
[0012] The inner ring of the contact tube is fixedly equipped with multiple guide blocks, and the multiple guide blocks are equidistantly distributed.
[0013] Beneficial effects
[0014] 1. The limiting component provides stable support and limiting on both sides of the rocker arm body during installation or disassembly, preventing swaying, displacement or falling, and improving maintenance safety; the guide component can accurately guide the parts into the rocker arm shaft hole, simplifying the centering operation and significantly improving assembly efficiency and reliability.
[0015] 2. The contact tube and guide ring provide precise radial guidance for the rocker arm shaft and the component to be assembled. The contact tube and guide ring only mate with the inner wall of the shaft hole of the rocker arm shaft and do not contact the external structure of the rocker arm body, thus improving assembly accuracy and reliability. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the limiting and disassembly mechanism of this utility model;
[0019] Figure 3 This is a schematic diagram of the limiting component structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the guide component structure of this utility model.
[0021] Figure label:
[0022] 100. Rocker arm body; 200. Locking screw; 300. Limiting and disassembling mechanism; 310. Rocker arm shaft; 320. Limiting assembly; 321. Limiting ring; 322. Spring; 323. Friction block; 324. Groove; 325. Drive plate; 326. Rubber strip; 330. Guide assembly; 331. Contact tube; 332. Guide ring; 333. Guide block. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0028] The following is combined Figures 1-4 This invention describes a convenient engine rocker arm that is easy to install and disassemble.
[0029] In one embodiment, a convenient engine rocker arm that is easy to install and disassemble includes: a rocker arm body 100, on one side of which a locking screw 200 is fixedly installed; and a limiting disassembly mechanism 300, which is provided on one side of the rocker arm body 100 to prevent the rocker arm from falling into the engine cylinder head during disassembly; wherein the limiting disassembly mechanism 300 includes a rocker arm shaft 310 fixedly installed on the surface of the rocker arm body 100, a limiting component 320 is provided on one side of the rocker arm shaft 310, and a guide component 330 is provided inside the rocker arm shaft 310.
[0030] In this embodiment, the limiting component 320 can provide stable support and effective limiting for both sides of the rocker arm body 100 during use, preventing the rocker arm body 100 from shaking or shifting during installation or disassembly, effectively preventing the rocker arm from accidentally slipping into the engine cylinder head, and improving the safety of engine maintenance and assembly. The setting of the guide component 330 enables the relevant components to be accurately inserted into the shaft hole of the rocker arm shaft 310, significantly improving the installation efficiency and assembly consistency of the rocker arm, reducing manual adjustment and centering errors, and improving the operational reliability and maintenance convenience of the engine valve mechanism.
[0031] It should be noted that an engine rocker arm typically includes basic components such as a rocker arm body 100, a shaft hole, a locking screw 200, a valve end, and a pushrod end. The limiting component 320 and the guiding component 330 are both located at specific parts of the rocker arm body 100 and the rocker arm shaft 310, and are only used during the installation, disassembly, or maintenance of the rocker arm. Their structural layout is reasonable and does not affect the normal fit between the rocker arm body 100 and the rocker arm shaft 310, nor does it change the force and movement relationship between the valve end and the pushrod end. Therefore, the limiting component 320 and the guiding component 330 will not affect the normal working state of the rocker arm.
[0032] like Figure 2 and Figure 3As shown, the limiting assembly 320 includes limiting rings 321 that are slidably installed on both sides of the rocker arm shaft 310. One end of the two limiting rings 321 located inside the rocker arm shaft 310 is fixedly connected to a spring 322, and the other end of the spring 322 is fixedly connected to the inner wall of the rocker arm shaft 310.
[0033] In this embodiment, the corresponding spring 322 can push the two limiting rings 321 to move in opposite directions, thereby achieving automatic support of both sides of the rocker arm body 100 by the two limiting rings 321. This structure can continuously limit and support the rocker arm body 100 during the installation or disassembly of the rocker arm, effectively preventing the rocker arm body 100 from sliding outward axially or wobbling, thus improving the stability and safety of operation.
[0034] Multiple friction blocks 323 are fixedly installed on the other end surface of the limiting ring 321, and the multiple friction blocks 323 are arranged in a ring shape.
[0035] In this embodiment, the friction block 323 arranged in a ring shape forms a reliable surface contact with the inner wall surface when the limiting ring 321 is pushed to the inner wall of the installation position by the spring 322. By significantly increasing the contact friction force, the anti-slip capability of the limiting ring 321 is effectively improved, preventing it from being displaced under vibration or working condition impact.
[0036] One side of the friction block 323 extends out of the surface of the limiting ring 321 and is set in an arc shape, while the friction block 323 is set in a strip shape.
[0037] In this embodiment, the strip-shaped friction block 323 extends in an arc shape along the surface of the limiting ring 321, which can better fit the curved contour of the inner wall of the installation position, significantly increasing the contact area and friction coefficient. When the limiting ring 321 is pressed against the inner wall by the spring 322, the friction block 323 can evenly distribute the resistance, effectively preventing the limiting ring 321 from slipping or loosening under vibration or impact conditions.
[0038] The surface of the friction block 323 has multiple grooves 324, all of which are designed as strip grooves.
[0039] In this embodiment, the strip groove 324 on the surface of the friction block 323 can form a micro-engagement structure when it contacts the inner wall of the installation position, further improving the friction coefficient and anti-slip capability.
[0040] A drive plate 325 is fixedly mounted on the surface of the limiting ring 321, and a rubber strip 326 is fixedly mounted on one side of the drive plate 325.
[0041] In this embodiment, the driving plate 325 can drive the limiting ring 321 to overcome the elastic force of the spring 322 and move axially back to the inside of the rocker arm shaft 310, releasing the pressure of the limiting ring 321 against the inner wall of the installation position, thereby smoothly releasing the limitation on the rocker arm body 100 and facilitating the disassembly of the rocker arm body 100. The rubber strip 326 increases the contact friction with the driving plate 325, thereby stabilizing the contact with the driving plate 325.
[0042] like Figure 2 and Figure 4 As shown, the guide assembly 330 includes a shaft hole opened inside the rocker arm shaft 310, a contact tube 331 is fixedly installed inside the shaft hole, and guide rings 332 are fixedly installed on both sides of the contact tube 331.
[0043] In this embodiment, the contact tube 331 and guide ring 332 provide precise radial guidance for the rocker arm shaft 310 and the component to be assembled. The contact tube 331 and guide ring 332 only cooperate with the inner wall of the shaft hole of the rocker arm shaft 310 and do not contact the external structure of the rocker arm body 100, thereby improving assembly accuracy and reliability.
[0044] Multiple guide blocks 333 are fixedly installed on the inner ring of the contact tube 331, and the multiple guide blocks 333 are equidistantly distributed.
[0045] In this embodiment, the equidistantly distributed guide blocks 333 form multiple uniform guide contact points on the inner ring of the contact tube 331, which can provide multi-point radial support, maintain the concentricity of the components, and prevent eccentricity or jamming.
[0046] Working principle: During the assembly of the rocker arm body 100, the two limiting rings 321 move away from the rocker arm body 100 by the elastic force of the spring 322, and automatically abut against the inner wall of the rocker arm shaft 310 mounting position. The other end of the limiting ring 321 is surrounded by a strip-shaped friction block 323, and the outer surface of the friction block 323 is provided with a strip-shaped groove 324. Driven by spring 322, friction block 323 forms surface contact and micro-engagement with the inner wall, significantly increasing friction and anti-slip capability. Under high vibration and impact conditions of the engine, limit ring 321 can be firmly positioned, effectively preventing rocker arm 100 from axially moving or falling into the engine cylinder head, thus improving structural safety and stability. When rocker arm 100 needs to be disassembled, the drive plate 325 can drive limit ring 321 to overcome the elastic force of spring 322 and move axially back into the rocker arm shaft 310, releasing its contact with the inner wall and achieving smooth release and disassembly of rocker arm 100. Contact tube 331 and guide ring 332 only cooperate with the inner wall of rocker arm shaft 310, providing multi-point radial guidance for axial assembly. The guide blocks 333 evenly distributed on the inner ring of contact tube 331 form multiple uniform support points, which can maintain the concentricity of the assembled parts, effectively preventing eccentricity, jamming or shaking, thereby improving the assembly accuracy and long-term operational reliability of the rocker arm.
[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0048] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A convenient engine rocker arm that is easy to install and disassemble, characterized in that, include: A rocker arm body (100) is provided with a locking screw (200) fixedly installed on one side of the rocker arm body (100). A telescopic limiting disassembly mechanism (300) is provided on one side of the rocker arm body (100) to prevent the rocker arm from falling into the engine cylinder head during disassembly. The limiting disassembly mechanism (300) includes a rocker arm shaft (310) fixedly installed on the surface of the rocker arm body (100), a limiting component (320) is provided on one side of the rocker arm shaft (310), and a guide component (330) is provided inside the rocker arm shaft (310).
2. The easy-to-install and disassemble convenient engine rocker arm according to claim 1, characterized in that, The limiting assembly (320) includes limiting rings (321) slidably mounted on both sides of the rocker arm shaft (310). One end of each limiting ring (321) located inside the rocker arm shaft (310) is fixedly connected to a spring (322), and the other end of the spring (322) is fixedly connected to the inner wall of the rocker arm shaft (310).
3. The easy-to-install and disassemble convenient engine rocker arm according to claim 2, characterized in that, Multiple friction blocks (323) are fixedly installed on the other end surface of the limiting ring (321), and the multiple friction blocks (323) are arranged in a ring shape.
4. The easy-to-install and disassemble convenient engine rocker arm according to claim 3, characterized in that, The friction block (323) extends from one side of the surface of the limiting ring (321) and is set in an arc shape, and the friction block (323) is set in a strip shape.
5. The easy-to-install and disassemble convenient engine rocker arm according to claim 4, characterized in that, The surface of the friction block (323) has a plurality of grooves (324), and the plurality of grooves (324) are all configured as strip grooves.
6. The easy-to-install and easy-to-disassemble engine rocker arm according to claim 2, characterized in that, A drive plate (325) is fixedly installed on the surface of the limiting ring (321), and a rubber strip (326) is fixedly installed on one side of the drive plate (325).
7. The easy-to-install and easy-to-disassemble engine rocker arm according to claim 1, characterized in that, The guide assembly (330) includes a shaft hole opened inside the rocker arm shaft (310), a contact tube (331) is fixedly installed inside the shaft hole, and guide rings (332) are fixedly installed on both sides of the contact tube (331).
8. The easy-to-install and disassemble convenient engine rocker arm according to claim 7, characterized in that, The inner ring of the contact tube (331) is fixedly equipped with multiple guide blocks (333), and the multiple guide blocks (333) are equidistantly distributed.